A method for replacing steel trestle bridges in a material lifting and conveying device

Abstract

This invention relates to a method for replacing a steel trestle of a material lifting and transport device, comprising: installing the bracket on a transfer station, silo, or support pier under the old steel trestle to be replaced; connecting the bracket and the old steel trestle via a bracket connecting part, thereby transferring the force of the transport device to the bracket; dismantling the structure between the original support point of the old steel trestle and the bracket connecting part; installing the new steel trestle on the original support point of the old steel trestle; installing the new support leg of the transport device under the transport device; connecting the new support leg of the transport device to the support beam of the new steel trestle, thereby transferring the force of the transport device to the new steel trestle; dismantling the support leg of the transport device; and dismantling the old steel trestle. This invention provides a simple construction method, saves costs, and allows the transport device to operate without stopping during dismantling and installation.

Description

Technical Field

[0001] This invention relates to the field of civil engineering replacement and installation technology, and specifically to a method for replacing a steel trestle bridge in a material lifting and transport device, particularly a method for replacing and installing a steel trestle bridge without shutting down the material lifting and transport device. Background Technology

[0002] Existing material lifting and transportation systems typically include an open-air steel trestle bridge with a transport device on the bridge deck. The transport device lifts the material for use or places it into a material storage silo. The above structure is usually of the under-bearing type.

[0003] The inventors discovered during their research of existing technologies that during the lifting of materials such as slag, the transported materials typically have a certain moisture content and are alkaline. This leads to severe corrosion of the steel trestle bridge, making maintenance through partial component replacement impossible, and there is no method to replace components without shutting down the material lifting and transporting device. Furthermore, if methods similar to those used in municipal bridge construction were adopted, such as erecting load-bearing scaffolding to support the entire bridge deck and replacing steel components one by one, the excessive height of the scaffolding and the long construction period would result in scaffolding erection and rental costs far exceeding the cost of the steel trestle bridge itself.

[0004] Therefore, there is an urgent need for a replacement method that is convenient to construct and has a reasonable cost. Summary of the Invention

[0005] To overcome the existing technical problems of uninterrupted operation of the transport equipment and high scaffolding construction costs, the inventors have created a method to replace the intermediate steel trestle bridge when the lower-bearing steel trestle bridge needs to be replaced, thus keeping the transport equipment running continuously.

[0006] The method used in this invention is as follows:

[0007] A method for replacing a steel trestle bridge in a material lifting and conveying device includes:

[0008] A transfer station is the starting point for material transportation and is located at a low point in the vertical direction.

[0009] The silo is the final destination for material transportation, and the silo's inlet is located at a high point in the vertical direction;

[0010] A support pier is one or more vertical support structures located between the operating station and the silo.

[0011] The old steel trestle bridge is located between the transfer station and the pier, and between the pier and the silo; it also includes a bridge body located between the pier and the adjacent pier when there are multiple piers; the old steel trestle bridge is fixed to the transfer station, the upper side of the silo and the top of the pier.

[0012] Support beams for old steel trestle bridges, and intermittently arranged crossbeams located on the upper part of the old steel trestle bridges;

[0013] The transport device is a linear transport device for transporting materials. It is located on the upper part of the old steel trestle and has transport device legs on the lower side. The transport device is fixedly connected to the support beam of the old steel trestle by means of the transport device legs, and the old steel trestle supports the transport device in a bottom-bearing manner.

[0014] The new steel trestle bridge is a new bridge structure located on top of the old steel trestle bridge to be replaced;

[0015] The side walls of the new steel trestle bridge are the supporting structures on both sides of the new steel trestle bridge and are located on both sides of the transport device;

[0016] The new steel trestle support beam is a crossbeam spaced apart at the bottom of the new steel trestle, which is offset from the crossbeam spaced apart at the bottom of the old steel trestle support beam, and the gap between the crossbeam spaced apart at the bottom of the new steel trestle support beam is opposite to that between the new steel trestle support beam and the crossbeam spaced apart at the bottom of the old steel trestle support beam.

[0017] The new outrigger of the transport device is fixed to the lower side of the transport device, and is located between adjacent outriggers of the transport device, opposite to the new steel trestle support beam;

[0018] The corbel, located under the old steel trestle bridge to be replaced, is situated on the transfer station, silo, and support pier, facing the area between the support pier and the silo, between the transfer station and the support pier, and between the support pier and the adjacent support pier, and serves as a cantilever structure supporting the old steel trestle bridge.

[0019] The bracket connecting part, fixed to the bracket, is a supporting component connecting the old steel trestle bridge and the bracket; and the following replacement methods:

[0020] Install the brackets on the transfer station, silo, and supports under the old steel trestle bridge to be replaced;

[0021] The bracket is connected to the old steel trestle by means of the bracket connection, so that the force of the transport device is transferred to the bracket;

[0022] Dismantle the structure between the original support point of the old steel trestle bridge and the corbel connection;

[0023] The new steel trestle was installed at the original support points of the old steel trestle.

[0024] The new support leg of the transport device is installed on the underside of the transport device.

[0025] Connect the new outrigger of the transport device to the new steel trestle support beam, so that the force of the transport device is transferred to the new steel trestle.

[0026] Remove the outriggers of the transport device;

[0027] The old steel trestle bridge was dismantled.

[0028] Furthermore, the step of installing the new steel trestle on the original support points of the old steel trestle also includes:

[0029] The new steel trestle sidewalls are first installed at the original support points of the old steel trestle.

[0030] After the side walls of the new steel trestle are installed, the supporting beams of the new steel trestle are installed.

[0031] Furthermore, in the step of installing the new steel trestle on the original support point of the old steel trestle, the new steel trestle is parallel to the old steel trestle, and the distance between them is greater than 100mm, which is less than the distance between the transport device and the support beam of the old steel trestle.

[0032] Furthermore, the dismantling of the old steel trestle bridge also includes:

[0033] The substructure of the old steel trestle bridge, the supporting beams of the old steel trestle bridge, the structures on both sides of the old steel trestle bridge, the corbel connection parts, and the corbels shall be dismantled in sequence.

[0034] Furthermore, the process of installing the new steel trestle at the original support points of the old steel trestle, or after removing the old steel trestle, also includes:

[0035] Enclosure structures were installed on the sides and top of the new steel trestle.

[0036] Furthermore, before the step of installing the corbel on the support, silo, and support on the underside of the old steel trestle to be replaced, a step of locally reinforcing the old steel trestle is also included.

[0037] Furthermore, both the new and old steel trestle bridges are truss structures.

[0038] Furthermore, the transport device is a belt conveyor.

[0039] Furthermore, the material is mineral powder.

[0040] Furthermore, the bracket connecting part is a steel component, and it is fixed to the old steel trestle by welding.

[0041] The advantages of this invention over the prior art are: the old steel trestle bridge is dismantled by adding brackets, the construction method is simple and cost-effective, and the transportation equipment does not need to be stopped during the dismantling and addition process, thus maintaining the continuity of production. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the old steel trestle bridge structure in a specific embodiment of the present invention;

[0043] Figure 2 This is a cross-sectional view of the old steel trestle bridge in a specific embodiment of the present invention;

[0044] Figure 3 This is a diagram showing the mounting position of the bracket in a specific embodiment of the present invention;

[0045] Figure 4 This is a diagram showing the positional relationship between the new steel trestle and the old steel trestle in a specific embodiment of the present invention;

[0046] Figure 5 This is a cross-sectional view (AA) of the new steel trestle bridge and the old steel trestle bridge in a specific embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the fixing of the new outrigger of the transport device in a specific embodiment of the present invention;

[0048] Figure 7 This is a front view of the steel trestle bridge after its replacement in a specific embodiment of the present invention.

[0049] Figure 8 This is a schematic diagram of the new steel trestle bridge enclosure structure in a specific embodiment of the present invention;

[0050] The labels are as follows: 100-Transfer station; 200-Warehouse; 300-Support pier; 400-Old steel trestle bridge; 410-Old steel trestle bridge support beam;

[0051] 500 - Transport device; 510 - Transport device outriggers;

[0052] 600 - New steel trestle bridge; 610 - Side wall of new steel trestle bridge; 620 - Support beam of new steel trestle bridge; 630 - New outrigger of transport device;

[0053] 700 - Cow leg; 710 - Cow leg connecting part. Detailed Implementation

[0054] The technical solutions in the embodiments are clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0055] Please see Figures 1 to 8To overcome the existing technical problems of non-stop operation of the transport device and high scaffolding construction costs, the inventor has created a method to replace the middle-span steel trestle when the lower-span steel trestle needs to be replaced, thus maintaining the continuous operation of the transport device. The method adopted in this invention is as follows: a method for replacing the steel trestle of a material lifting and transport device, comprising: a transfer station 100, which is the starting point of material transport and is located at the lowest point in the vertical direction;

[0056] The silo 200 is the final destination for material transportation, and the inlet of the silo 200 is located at the highest point in the vertical direction;

[0057] Support 300, one or more vertical support structures located between the operating station 100 and the silo 200;

[0058] The old steel trestle bridge 400 is a bridge body located between the transfer station 100 and the pier 300, and between the pier 300 and the silo 200; it also includes a bridge body located between the pier 300 and the adjacent pier 300 when there are multiple piers 300; the old steel trestle bridge 400 is fixed to the upper side of the transfer station 100 and the silo 200 and the top of the pier 300;

[0059] Please see Figure 1 In this embodiment, the old steel trestle bridge 400 between the right-side support 300 and the silo 200 needs to be replaced. Normal construction requires erecting a full-span scaffold from the bottom, which is high in height and has a high risk factor. Moreover, in terms of replacement cycle, it is very difficult to support the newly added structure with the full-span scaffold while maintaining uninterrupted production.

[0060] The old steel trestle support beam 410 is a crossbeam spaced apart on the upper part of the old steel trestle 400. The crossbeam described in this invention is not simply a transverse support that is set vertically along the material transport direction, but can also be an oblique support at the bottom of a truss structure. The function of the old steel trestle support beam 410 is to support the upper structure.

[0061] The transport device 500 is a linear transport device for transporting materials. It is located on the upper part of the old steel trestle 400 and has a transport device support leg 510 on its lower side. The transport device 500 is fixedly connected to the old steel trestle support beam 410 by means of the transport device support leg 510, and the old steel trestle 400 supports the transport device 500 in a bottom bearing manner.

[0062] New steel trestle 600 is a new bridge structure located on top of the old steel trestle 400 to be replaced;

[0063] The new steel trestle sidewall 610 is the supporting structure on both sides of the new steel trestle 600 and is located on both sides of the transport device 500.

[0064] The new steel trestle support beam 620 is a crossbeam spaced apart at the lower part of the new steel trestle 600. It is offset from the crossbeam spaced apart at the old steel trestle support beam 410, and the gap between the crossbeams spaced apart at the old steel trestle support beam 410 is opposite to that of the new steel trestle support beam 620. The crossbeam structure of the new steel trestle support beam 620 is the same as that of the old steel trestle support beam 410. It is not a completely lateral support, but it needs to be opposite to a part of the gap between the crossbeams spaced apart at the old steel trestle support beam 410 to ensure that the transport device 500 can be stably fixed to the new steel trestle support beam 620. The gap between the crossbeams spaced apart at the old steel trestle support beam 410 mentioned in this invention is not a one-to-one complete opposite, but can be partially opposite, for support.

[0065] The new support leg 630 of the transport device is fixed to the lower side of the transport device 500, and is arranged between the adjacent support legs 510 of the transport device, opposite to the new steel trestle support beam 620;

[0066] The cantilever 700, located below the old steel trestle 400 to be replaced, is situated on the transfer station 100, the silo 200, and the support 300, facing the area between the support 300 and the silo 200, between the transfer station 100 and the support 300, and between the support 300 and adjacent supports 300. It serves as a cantilever structure supporting the old steel trestle 400. (See also...) Figure 3 and Figure 4 The 700 corbel is a cantilever structure positioned between the 300 support and the 200 hopper.

[0067] The bracket connecting part 710 is fixed to the bracket 700 and serves as a supporting component connecting the old steel trestle bridge 400 and the bracket 700.

[0068] And the following replacement methods:

[0069] The bracket 700 is installed on the transfer station 100, silo 200, and support 300 below the old steel trestle bridge 400 to be replaced;

[0070] In this specific embodiment, a bracket 700 is only added between the support 300 and the hopper 200. (For further details, please refer to...) Figure 1 When the old steel trestle bridge 400 that needs to be replaced is between transfer station 100 and silo 200, a bracket 700 is added to the corresponding lower side. Similarly, when there are multiple old steel trestle bridges 400 that need to be replaced, brackets 700 are added to transfer station 100, silo 200 and support 300.

[0071] The bracket 700 and the old steel trestle 400 are connected by the bracket connecting part 710, so that the force of the transport device 500 is transferred to the bracket 700;

[0072] In this step, please refer to Figure 3Remove the structure of the shaded area and transfer the force to the corbel 700.

[0073] Dismantle the structure between the original support point of the old steel trestle bridge 400 and the corbel connection 710;

[0074] The new steel trestle 600 is installed at the original support points of the old steel trestle 400;

[0075] Please see Figure 4 After the aforementioned shaded area is removed, the support points of the old steel trestle bridge 400 on the pier 300 and the silo 200 disappear, and the new steel trestle bridge 600 can be installed and fixed on the original support points.

[0076] A new support leg 630 of the transport device is installed on the lower side of the transport device 500;

[0077] In this embodiment, the new outrigger 630 of the transport device is fixedly connected to the new steel trestle support beam 620;

[0078] Connect the new support leg 630 of the transport device to the new steel trestle support beam 620, so that the force of the transport device 500 is transferred to the new steel trestle 600;

[0079] Remove the outrigger 510 of the transport device;

[0080] The old steel trestle bridge 400 was dismantled.

[0081] In this embodiment, the new steel trestle bridge 600 is made of H-beams, coated with anti-alkali and anti-corrosion paint, and is installed, fixed, and disassembled by means of crane lifting.

[0082] In some other embodiments, the preferred step of installing the new steel trestle 600 at the original support point of the old steel trestle 400 further includes:

[0083] The new steel trestle sidewall 610 is first installed at the original support point of the old steel trestle 400;

[0084] After the new steel trestle sidewall 610 is installed, the new steel trestle support beam 620 is installed.

[0085] In other embodiments, preferably, in the step of installing the new steel trestle 600 on the original support point of the old steel trestle 400, the new steel trestle 600 is parallel to the old steel trestle 400 and the distance between them is greater than 100mm, which is less than the distance between the transport device 500 and the support beam 410 of the old steel trestle. More preferably, it is 200mm, leaving a predetermined gap to facilitate installation without hindering the original height of the transport device 500.

[0086] In other embodiments, the step of dismantling the old steel trestle bridge 400 further includes:

[0087] The lower structure of the old steel trestle bridge 400, the supporting beam 410 of the old steel trestle bridge, the structures on both sides of the old steel trestle bridge 400, the corbel connection 710 and the corbel 700 shall be dismantled in sequence.

[0088] In other embodiments, the step of installing the new steel trestle 600 at the original support point of the old steel trestle 400 or after removing the old steel trestle 400 further includes:

[0089] Enclosure structures are installed on the sides and top of the new steel trestle 600.

[0090] In some other embodiments, before the step of installing the bracket 700 on the support 300, hopper 200 and support 300 on the underside of the old steel trestle 400 to be replaced, a step of partially reinforcing the old steel trestle 400 is also included.

[0091] In this embodiment, the new steel trestle 600 and the old steel trestle 400 are truss structures, the transport device 500 is a belt conveyor, the material is mineral powder, the bracket connection 710 is a steel component, and the fixing method with the old steel trestle 400 is welding.

[0092] In this invention, the inventors utilize the addition of brackets 700 to transform the original supporting structure of the new steel trestle 600 and the old steel trestle 400, enabling the replacement of the transport device 500 without stopping the machine. The construction method is simple, cost-effective, and the transport device does not need to be stopped during the dismantling and addition process, thus maintaining the continuity of production.

[0093] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method of replacing a steel trestle of a material hoisting and transport device, characterized in that, The application relates to a method for replacing an old steel bridge (400) in a material conveying system, comprising the following steps: a transfer station (100) serving as a starting point of material conveying and located at a low vertical position; a stock bin (200) serving as a terminal point of material conveying, and a feeding port of the stock bin (200) being located at a high vertical position; a support pier (300) serving as a vertical support structure between the transfer station (100) and the stock bin (200); the old steel bridge (400) being located between the transfer station (100) and the support pier (300) and serving as a bridge body between the support pier (300) and the stock bin (200), and when the support pier (300) is multiple, the old steel bridge (400) is also located between the support pier (300) and an adjacent support pier (300) and serving as a bridge body; the old steel bridge (400) is fixed to the upper side of the transfer station (100) and the stock bin (200) and the top of the support pier (300); old steel bridge support beams (410) being located at the upper part of the old steel bridge (400) and serving as spaced beams; a conveying device (500) being located at the upper part of the old steel bridge (400) and serving as a straight-line conveying device, and a conveying device support leg (510) being located at the lower side of the conveying device (500); the conveying device (500) is fixedly connected to the old steel bridge support beams (410) through the conveying device support leg (510), and the old steel bridge (400) supports the conveying device (500) in a manner of being under the conveying device (500); a new steel bridge (600) being located at the upper side of the old steel bridge (400) to be replaced and serving as a new bridge body; new steel bridge side walls (610) being located at the two sides of the new steel bridge (600) and serving as support structures of the new steel bridge (600) and being located at the two sides of the conveying device (500); new steel bridge support beams (620) being located at the lower part of the new steel bridge (600) and serving as spaced beams, and the new steel bridge support beams (620) are located in a staggered manner with the old steel bridge support beams (410) and are opposite to the gaps between the old steel bridge support beams (410); conveying device new support legs (630) being fixed to the lower side of the conveying device (500) and being located between adjacent conveying device support legs (510) and being opposite to the new steel bridge support beams (620); corbels (700) being located at the lower side of the old steel bridge (400) to be replaced and being located at the transfer station (100), the stock bin (200) and the support pier (300) and being located between the support pier (300) and the stock bin (200), between the transfer station (100) and the support pier (300) and between the support pier (300) and an adjacent support pier (300) and serving as cantilever structures for supporting the old steel bridge (400); corbel connecting parts (710) being fixed to the corbels (700) and serving as support members for connecting the old steel bridge (400) and the corbels (700); and the following replacing method: installing the corbels (700) on the transfer station (100), the stock bin (200) and the support pier (300) at the lower side of the old steel bridge (400) to be replaced. Connecting the corbel (700) and the old steel trestle (400) through the corbel connecting part (710), so that the force of the transport device (500) is converted to the corbel (700); Removing the structure between the original support point of the old steel trestle (400) and the corbel connecting part (710); Installing the new steel trestle (600) on the original support point of the old steel trestle (400); Installing the new transport device support leg (630) on the lower side of the transport device (500); Connecting the new transport device support leg (630) and the new steel trestle joist (620), so that the force of the transport device (500) is converted to the new steel trestle (600); Removing the transport device support leg (510); Removing the old steel trestle (400).

2. The method of claim 1, wherein, The step of installing the new steel trestle (600) on the original support point of the old steel trestle (400) further comprises: First installing the new steel trestle side wall (610) on the original support point of the old steel trestle (400); After installing the new steel trestle side wall (610), installing the new steel trestle joist (620).

3. The method of claim 1, wherein the steel trestle is replaced with a steel trestle having a height of 3.5 m or more. In the step of installing the new steel trestle (600) on the original support point of the old steel trestle (400), the new steel trestle (600) is parallel to the old steel trestle (400) and the distance between them is greater than 100mm and less than the distance between the transport device (500) and the old steel trestle joist (410).

4. The method of claim 1, wherein, The step of removing the old steel trestle (400) further comprises: Removing the lower structure of the old steel trestle (400), the old steel trestle joist (410), the structure on both sides of the old steel trestle (400), the corbel connecting part (710) and the corbel (700) in sequence.

5. The method of claim 2, wherein the steel trestle is replaced with a steel trestle having a height of 3.5 m or more. After the step of installing the new steel trestle (600) on the original support point of the old steel trestle (400) or the step of removing the old steel trestle (400), further comprising: Installing the enclosure on the side and top of the new steel trestle (600).

6. The method of claim 2, wherein the steel trestle is replaced with a steel trestle having a height of 3.5 m or more. Before the step of installing the corbel (700) on the old steel trestle (400) and the support pier (300), the stockpile (200), and the support pier (300) on the lower side of the old steel trestle (400) to be replaced, further comprising the step of locally reinforcing the old steel trestle (400).

7. The method according to any one of claims 1 to 6, wherein the steel trestle is replaced by a steel trestle of the same type as the steel trestle to be replaced. The new steel trestle (600) and the old steel trestle (400) are truss structures.

8. The method according to any one of claims 1 to 6, wherein the steel trestle is replaced by a steel trestle of the same type as the steel trestle to be replaced. The transport device (500) is a belt roller.

9. The method according to any one of claims 1 to 6, wherein the steel trestle is replaced by a steel trestle of the same type as the steel trestle to be replaced. The material is mineral powder.

10. The method of claim 1-6, wherein, The corbel connecting part (710) is a steel component, and the fixed mode with the old steel trestle (400) is welding.

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