Tool for supporting and replacing modular expansion joint hanging bracket

Abstract

A tool for replacing a modular expansion joint hanging bracket support comprises a load-bearing jacking assembly and a distance expansion assembly, the distance expansion assembly is used for expanding the distance between two pieces of expansion joint profile steel on a modular expansion joint, and the distance expansion assembly is arranged on the outer side of the load-bearing jacking assembly and used for expanding the distance between the two pieces of expansion joint profile steel on the modular expansion joint. The output end of the spacing expansion assembly corresponds to a gap between the two pieces of expansion joint profile steel; the bearing jacking assembly is arranged on the side face of the supporting hanging bracket in a clamped mode and compresses the pressing support in the supporting hanging bracket, and after compression, the bearing support is loosened at the installation position of the bearing support and taken out of the bearing support; the load-bearing jacking assembly is controlled to unload, and the pressing support is loosened at the mounting position and taken out; the bearing and jacking assembly comprises a bearing structure and a jacking structure, the bearing structure comprises two bearing plates which are oppositely arranged, a bent plate is fixed between the two bearing plates, and the jacking end of the jacking structure is arranged on the plane of the bent plate. The device has the advantages of being high in replacement efficiency and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction equipment, in particular to a tool for replacing a modular expansion joint hanger support. Background Art

[0002] The pressure-bearing support and compression support of the modular expansion joint are vulnerable parts. If the support is damaged during long-term use and is not replaced in time, the impact will increase when the vehicle moves after the support falls. The strong impact will cause the support hanger to break and fall off, and then trigger a chain reaction of the expansion device, such as damage to the stainless steel sliding mirror, deformation and damage to the steel component, damage to the sliding system and the load-bearing system, and then cause major safety hazards to bridge deck driving and bridges. In order to ensure the safety of bridge deck driving and bridges, damaged supports need to be replaced in time.

[0003] The traditional construction process for bearing replacement is: cordon off the bridge deck for traffic - remove the waterproofing strips - install hydraulic jacks on the bridge deck - lift the steel section assembly - install load-bearing wire ropes - remove the bolts connecting the support hanger to the steel section assembly - remove the pressure bearing of the support hanger - remove the compression bearing of the support hanger and install the core compression bearing to the support hanger - use the bridge deck jacking system to forcibly compress the support hanger and then install the pressure bearing - install the bolts connecting the support hanger to the steel section assembly - remove the jacking system and install the waterproofing strips - and then resume traffic. Disadvantages of this process:

[0004] The simultaneous construction of the bridge deck and the bottom of the beam is required, and the coordinated operation requires 1 more construction personnel for traffic control, 4 bridge deck jack operators, and 2 personnel for replacing the bottom beam support, a total of 7 construction personnel are required;

[0005] In order to reduce traffic pressure, traffic containment operations must be carried out at night, which poses a great safety hazard to operators;

[0006] The operation is complicated and point-to-point operation is impossible during the construction process, resulting in low construction efficiency and high construction costs. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a tool for replacing modular expansion joint hanger supports, by which damaged supports can be replaced with higher efficiency and lower cost.

[0008] The purpose of this utility model is achieved through the following technical solutions:

[0009] A tool for replacing a modular expansion joint hanger support, comprising:

[0010] A load-bearing lifting assembly and a spacing expansion assembly, wherein the spacing expansion assembly is used to expand the spacing between two expansion joint steel sections on a modular expansion joint, and the spacing expansion assembly is arranged on the outside of the load-bearing lifting assembly, and the output end of the spacing expansion assembly corresponds to the gap between the two expansion joint steel sections; the load-bearing lifting assembly is clamped on the side of the support hanger and compresses the compression support in the support hanger. After compression, the compression support is loosened at its installation position and removed; the load-bearing lifting assembly is controlled to unload force, and the compression support is loosened at its installation position and removed.

[0011] In one or more embodiments of the present invention, the load-bearing jacking assembly includes a load-bearing structure and a jacking structure, the load-bearing structure includes two relatively arranged load-bearing plates, a bent plate is fixed between the two load-bearing plates, and the jacking end of the jacking structure is arranged on the plane of the bent plate.

[0012] In one or more embodiments of the present invention, the jacking structure includes a hydraulic jack, which is arranged on the plane of the bent plate. The output end of the hydraulic jack is movably abutted against the bottom surface of the support hanger, and the hydraulic jack is used to compress and tighten the support.

[0013] In one or more embodiments of the present invention, the spacing expansion assembly includes two hydraulic expanders, and the two hydraulic expanders are located on both sides of the load-bearing jacking assembly.

[0014] Beneficial effects of the utility model:

[0015] The utility model proposes a modular expansion joint hanger support replacement tool. When using the tool to replace damaged pressure supports and compression supports, there is no need to block traffic on the bridge deck and remove waterproof strips. Only three people are needed to complete the replacement of the damaged supports during the construction process. The tool can be used to carry out construction work at any damaged point of the hanger support, and has the advantages of high efficiency and low cost. The construction workers all work at the bottom of the beam, which makes it safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a usage structure diagram of the utility model;

[0018] Figure 3 yes Figure 2 Front view of

[0019] Figure 4 yes Figure 3 sectional view of . DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Example 1: In this embodiment, Figures 1 to 4 As shown, a tool for replacing a modular expansion joint hanger support includes a load-bearing jacking assembly and a spacing expansion assembly, wherein the spacing expansion assembly is used to expand the spacing between two expansion joint steel sections on the modular expansion joint, and the spacing expansion assembly is arranged on the outside of the load-bearing jacking assembly, and the output end of the spacing expansion assembly corresponds to the gap between the two expansion joint steel sections; the load-bearing jacking assembly is clamped on the side of the support hanger and compresses the compression support in the support hanger, and after compression, the compression support is loosened at its installation position and removed; the load-bearing jacking assembly is controlled to unload force, and the compression support is loosened at its installation position and removed.

[0022] This tool is used on modular expansion joints, which include a movable end displacement box A and a fixed end displacement box B. A load-bearing main beam C is arranged in the movable end displacement box A and the fixed end displacement box B. A number of supporting hangers D in a rectangular frame are provided on the load-bearing main beam C. An expansion joint steel E is fixed on the upper side of the supporting hanger D. The supporting hanger D and the upper and lower sides of the load-bearing main beam C form a first installation position and a second installation position respectively. A pressure support F is provided in the first installation position, and a compression support G is provided in the second installation position. The compression support G is composed of a rubber layer and a metal layer, so the compression support G itself has a certain amount of compression.

[0023] In this embodiment, two adjacent expansion joint steel sections are expanded by a spacing expansion assembly, thereby driving the spacing between two adjacent support hangers D to expand, so that there is enough spacing to take and place the pressure support F and the compression support G.

[0024] One end of the load-bearing jacking component is clamped in the groove of the load-bearing main beam C, and then the support hanger D is jacked up by the load-bearing jacking component, so as to squeeze the load-bearing main beam C and the support hanger D, thereby compressing and pressing the support G. After the support G is compressed, the thickness of the first installation position becomes larger, which is convenient for taking out the damaged pressure-bearing support F. After taking it out, control the load-bearing jacking component to unload the force. Due to the empty space in the first installation position, the thickness of the second installation position becomes larger, and then it is convenient to take out the damaged pressing support G. Then, place the new pressure-bearing support F and pressing support G through the above method, thereby completing the replacement of the support.

[0025] In one or more embodiments of the present invention, the load-bearing jacking component includes a load-bearing structure and a jacking structure. The load-bearing structure includes two oppositely arranged load-bearing plates 1, and a bent plate 2 is fixed between the two load-bearing plates 1. The jacking end of the jacking structure is arranged on the plane of the bent plate 2.

[0026] In this embodiment, the load-bearing plate 1 has a "C" - shaped structure, and the distance between the two load-bearing plates 1 is greater than the thickness of the support hanger D. The bent plate 2 includes a support cross plate and a support vertical plate. The support vertical plate is fixed on the upper side of the support cross plate. When the load-bearing structure is in use, the support vertical plate is located outside the support hanger D, and the support cross plate is located under the support hanger D. There are gaps formed on the upper sides of the two load-bearing plates 1, so as not to interfere with the support hanger D; the load-bearing main beam C is of "I" - shaped steel structure, and its two sides are grooves. When the load-bearing structure is in use, the upper side extension ends of the load-bearing plates 1 are located in the grooves.

[0027] In one or more embodiments of the present invention, the jacking structure includes a hydraulic jack 3. The hydraulic jack 3 is arranged on the plane of the bent plate 2, and the output end of the hydraulic jack 3 is in movable abutment with the bottom surface of the support hanger. The hydraulic jack 3 is used to compress the pressing support.

[0028] In this embodiment, the hydraulic jack 3 adopts the existing technology, and its specific structure will not be elaborated here; when the hydraulic jack 3 is in use, it is placed on the support cross plate of the bent plate 2, and then the bottom of the support hanger D is pushed up by the hydraulic jack 3. During the pushing process, since the upper side extension ends of the load-bearing plates 1 are clamped in the grooves of the load-bearing main beam C, the pressing support G is compressed.

[0029] In one or more embodiments of the present invention, the spacing expansion component includes two hydraulic expanders 4, and the two hydraulic expanders 4 are located on both sides of the load-bearing jacking component.

[0030] In this embodiment, the hydraulic expander 4 adopts the existing technology, and its specific structure will not be elaborated here.

[0031] The process of using the present invention for support replacement is as follows:

[0032] S1. According to the characteristics of the modular telescopic device, the dimensions are measured on site and the tooling of appropriate dimensions is produced;

[0033] S2. Remove the connecting bolts between the expansion joint steel E and the supporting hanger D at the damaged support;

[0034] S3. Install and fix the hydraulic expander 4 between two adjacent expansion joint steels E;

[0035] S4. Install the load-bearing jacking assembly on the outside of the load-bearing main beam C;

[0036] S5. The distance between the two adjacent expansion joint steels E is expanded by the hydraulic expander 4 (to ensure that the pressure bearing F and the compression bearing G can be removed and installed);

[0037] S6. The bottom of the support hanger D is lifted by driving the hydraulic jack 3. During the lifting process, the upper extension of the bearing plate 1 is stuck in the groove of the load-bearing main beam C, which compresses the compression support G. After compression, the thickness of the first installation position of the compression support G increases. Then, the damaged pressure support F is removed.

[0038] S7. After the pressure bearing F is removed, the hydraulic jack 3 is controlled to unload the force. Since the first installation position is now vacant, the thickness of the second installation position becomes larger, making it easier to remove the damaged compression bearing G.

[0039] S8. Place new pressure bearing support F and compression support G using the above method, thereby completing the replacement of the support.

[0040] S9. Remove the tooling, reset the removed bolts and mark the replaced supports, and then conduct operational observations.

[0041] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "left," "right," and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use, or the positions or locations commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific position, be constructed, or operate in a specific position. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

Claims

1. A tool for replacing modular expansion joint hanger supports, characterized in that: include: A load-bearing lifting assembly and a spacing expansion assembly, wherein the spacing expansion assembly is used to expand the spacing between two expansion joint steel sections on a modular expansion joint, and the spacing expansion assembly is arranged on the outside of the load-bearing lifting assembly, and the output end of the spacing expansion assembly corresponds to the gap between the two expansion joint steel sections; the load-bearing lifting assembly is clamped on the side of the support hanger and compresses the compression support in the support hanger. After compression, the compression support is loosened at its installation position and removed; the load-bearing lifting assembly is controlled to unload force, and the compression support is loosened at its installation position and removed.

2. The tool for replacing a modular expansion joint hanger support according to claim 1, characterized in that: The load-bearing jacking assembly comprises a load-bearing structure and a jacking structure, wherein the load-bearing structure comprises two load-bearing plates (1) arranged opposite to each other, a bent plate (2) being fixed between the two load-bearing plates (1), and a jacking end of the jacking structure is arranged on the plane of the bent plate (2).

3. The tool for replacing a modular expansion joint hanger support according to claim 2, characterized in that: The jacking structure includes a hydraulic jack (3), which is arranged on the plane of the bent plate (2), and the output end of the hydraulic jack (3) is movably abutted against the bottom surface of the support hanger, and the hydraulic jack (3) is used to compress and tighten the support.

4. The tool for replacing a modular expansion joint hanger support according to claim 1, characterized in that: The spacing expansion assembly comprises two hydraulic expanders (4), and the two hydraulic expanders (4) are located on both sides of the load-bearing jacking assembly.

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