One-way slidable ladder cage connecting device and method suitable for long-connection steel bridge

Abstract

The invention provides a one-way slidable ladder cage connecting device and method suitable for a long-connected steel bridge, the one-way slidable ladder cage connecting device is applied to the long-connected steel bridge, the connecting device comprises connecting rods symmetrically located on the two sides of the long-connected steel bridge, and each connecting rod extends to the outer side of the long-connected steel bridge; the cross rod is fixed between the connecting rods above the long-connected steel bridge and below the long-connected steel bridge, and the connecting rods and the cross rod form a #-shaped hoop; and a friction resistant assembly. According to the device, the second plate, the cross rods and the connecting rods form a whole, namely the #-shaped hoop, the ladder cage is connected to the whole, the long-connected steel bridge can extend when the temperature rises and can shorten when the temperature drops, the first plate is fixed to the long-connected steel bridge, and when the long-connected steel bridge stretches and retracts under the influence of the temperature, the first plate is fixed to the ladder cage. Due to the existence of friction force between the first plate and the second plate, the #-shaped hoop cannot move along with the long-connection steel bridge, the elevator cage is prevented from being deviated, and the stability of the elevator cage is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of temporary connection structures for high-altitude bridge operations, and in particular to a one-way slidable ladder cage connection device and a connection method suitable for long-span steel bridges. Background Art

[0002] Because long-span steel girder bridges involve the erection of steel bridges, construction needs to be carried out on the starting pier working surface. Therefore, a ladder cage leading to the top of the upper chord of the steel girder bridge is required for subsequent construction. In the past, the ladder cage connection of steel girder bridges was carried out by welding the steel bridge web. This method is prone to damage the steel bridge base material, so certain measures must be taken during subsequent construction. Therefore, during construction, the connection method of the steel girder bridge is generally adopted with a clamp. However, when clamps are used, the long-span steel girder bridge has higher requirements for the connection method due to the influence of temperature. There is a phenomenon that the length of the steel girder bridge will expand and contract due to temperature changes, which poses a high risk factor for the stability of the subsequent connection between the ladder cage and the steel bridge, and the disassembly takes a long time. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a one-way sliding ladder cage connection device and connection method suitable for long-span steel bridges, so as to solve the problem in the existing technology that when using clamps, the length of the steel beam bridge will expand and contract due to temperature changes, which poses a high risk to the stability of the subsequent connection between the ladder cage and the steel bridge and takes a long time to disassemble.

[0004] In a first aspect, the present application provides a one-way slidable ladder cage connection device applicable to a long steel bridge, which is applied to a long steel bridge. The connection device includes:

[0005] Connecting rods are symmetrically located on both sides of the long steel bridge, and each connecting rod extends to the outside of the long steel bridge;

[0006] A crossbar is fixed between the connecting rods above and below the long steel bridge, and the connecting rod and the crossbar form a cross-shaped clamp;

[0007] The friction-resistant component includes a first plate fixed to the upper and lower parts of the long steel bridge, a second plate is provided on the side of each first plate away from the long steel bridge, each second plate is tightly attached to and fixedly connected to the corresponding cross bar, and the side of the second plate close to the first plate is a rough surface.

[0008] In some embodiments, a plurality of the connecting devices are provided, and a connecting rod of each connecting device is connected to a ladder cage.

[0009] In some embodiments, a ladder cage is connected to the connecting rods of two adjacent connecting devices.

[0010] In some embodiments, the connecting device is provided with two upper first plate members fixed on the long steel bridge between the upper crossbars, the upper part of the first plate members is provided with second plate members, and the crossbars and the corresponding second plate members are fixed by angle steel welding.

[0011] In some embodiments, each connecting rod near one side of the ladder cage is provided with at least two shock-absorbing pulleys.

[0012] In some embodiments, the connecting rod near one side of the ladder cage is provided with a connecting member.

[0013] In some embodiments, the long steel bridge between the two connecting rods away from one side of the ladder cage is provided with a scale bar, a pointer corresponding to the scale bar is provided, and the long steel bridge is provided with an alarm device connected to the pointer.

[0014] In some embodiments, when the displacement of the pointer relative to the scale bar exceeds the set value, the alarm device is triggered to alarm.

[0015] In some embodiments, the set value is 4cm-6cm.

[0016] In a second aspect, embodiments of the present application provide a connecting method suitable for the one-way slidable ladder cage connecting device of the long steel bridge, comprising

[0017] S01, two connecting rods are pre-fixed on both sides of the long steel bridge;

[0018] S02, a crossbar is fixed between the connecting rods above and below the long steel bridge, and the connecting rod and the crossbar form a cross-shaped hoop;

[0019] S03, a first plate member is fixed on the upper part and the bottom of the long steel bridge on one side of the connecting rod;

[0020] S04, a second plate member is placed away from the long steel bridge on one side of each first plate member;

[0021] S05, the second plate member is fastened with the crossbar to form a connecting device.

[0022] The second plate, crossbar, and connecting rod of the present application are an integral whole, namely, a crisscross hoop, to which the ladder cage is connected. The long steel bridge will extend when the temperature rises and shorten when the temperature drops. The first plate is fixed to the long steel bridge. When the long steel bridge expands and contracts under the influence of temperature, due to the friction between the first plate and the second plate, the crisscross hoop will not move with the long steel bridge, thereby preventing the ladder cage from being deviated and ensuring the stability of the ladder cage.

[0023] The connecting rod of the present application is the main load-bearing component, and the cross bar is the secondary load-bearing component. The cross-shaped clamp of the present application saves materials while meeting the load and deformation requirements under various working conditions, ensuring economy while also ensuring overall strength and reliability in use.

[0024] When the temperature drops, the long steel bridge will shorten. The setting of the shock-absorbing pulley can reduce the lateral displacement of the long steel bridge, making the ladder cage more stably and firmly clamped on the long steel bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings of the embodiments. Obviously, the drawings described below only relate to some embodiments of the present application and are not intended to limit the present application.

[0026] Figure 1 This is a schematic diagram of the ladder cage and the long steel bridge connected in accordance with an embodiment of the present application;

[0027] Figure 2 This is a partial front view of the ladder cage and the long steel bridge after being connected in the embodiment of the present application;

[0028] Figure 3 for Figure 2 Sectional view of 2-2;

[0029] Figure 4 for Figure 2 Sectional view of 1-1;

[0030] Figure 5 This is a detailed diagram of the connecting rod according to an embodiment of the present application.

[0031] Description of reference numerals:

[0032] 1-long steel bridge, 2-ladder cage, 3-second plate, 4-first plate, 5-shock-absorbing pulley, 6-connecting rod, 7-cross bar, 8-connecting piece, 9-scale bar, 10-nut, 11-hole, 12-connecting plate, 13-angle steel, 14-alarm device, 15-cross-shaped clamp. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0034] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a unique orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0035] In the application, the word "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, known structures and processes are not described in detail to avoid obscuring the description of the present application with unnecessary detail. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles disclosed herein.

[0036] See also Figure 1-3 In a first aspect, an embodiment of the present application provides a connection device for a one-way slidable ladder cage 2 of a long steel bridge 1, which is applied to the long steel bridge 1, and the connection device includes:

[0037] Connecting rods 6 are symmetrically located on both sides of the long steel bridge 1, and each connecting rod 6 extends to the outside of the long steel bridge 1;

[0038] A crossbar 7 is fixed between the connecting rods 6 above the long steel bridge 1 and below the long steel bridge, and the connecting rods 6 and the crossbar 7 form a cross-shaped clamp 15;

[0039] The friction-resistant assembly comprises first plates 4 fixed to the upper and lower parts of the long-span steel bridge 1, each first plate 4 is provided with a second plate 3 away from one side of the long-span steel bridge 1, each second plate 3 is tightly fixed with a corresponding cross rod 7, and the side of the second plate 3 close to the first plate 4 is a rough surface.

[0040] In the present application, the second plate 3, the cross rod 7, and the connecting rod 6 form an integral whole, i.e. a cross-shaped hoop 15, and the ladder cage 2 is connected to the integral whole. When the temperature of the long-span steel bridge 1 rises, the long-span steel bridge 1 will elongate, and when the temperature of the long-span steel bridge 1 decreases, the long-span steel bridge 1 will shorten. The first plate 4 is fixed to the long-span steel bridge 1. When the long-span steel bridge 1 moves up and down under the influence of temperature, the cross-shaped hoop 15 will not move with the long-span steel bridge 1 due to the friction between the first plate 4 and the second plate 3, thereby preventing the ladder cage 2 from being deviated and ensuring the stability of the ladder cage 2.

[0041] The connecting rod 6 of the present application is a main force component, and the cross rod 7 is a secondary force component. The cross-shaped hoop 15 of the present application saves materials while meeting the force and deformation under various working conditions, thereby ensuring economy, overall strength, and reliability in use.

[0042] Please refer to Figure 3 In some embodiments, a plurality of connecting devices are provided, and the connecting rod 6 of each connecting device is connected with the ladder cage 2.

[0043] Please refer to Figure 1 Further, the connecting rod 6 of each connecting device is connected with the ladder cage 2.

[0044] Please refer to Figure 3 Further, the connecting device is provided with two upper and lower parts. The first plate 4 is fixed to the upper part of the long-span steel bridge 1 between the upper cross rods 7, the upper part of the first plate 4 is provided with the second plate 3, and the cross rod 7 and the corresponding second plate 3 are fixed by the angle steel 13. The first plate 4 is fixed to the lower part of the long-span steel bridge 1 between the lower cross rods 7, the lower part of the first plate 4 is provided with the second plate 3, and the cross rod 7 and the corresponding second plate 3 are fixed by the angle steel 13.

[0045] Exemplarily, the first plate 4 is a stainless steel plate, and the thickness of the stainless steel plate is 3mm-6mm, for example, 3mm, 4mm, 5mm, 6mm, etc. The second plate 3 is a tetrachloroethylene plate.

[0046] Further, at least two shock-absorbing pulleys 5 are arranged on the side of each connecting rod 6 close to the ladder cage 2.

[0047] It can be understood that when the temperature drops, the long steel bridge 1 will shorten. The setting of the shock-absorbing pulley 5 can reduce the lateral displacement of the long steel bridge 1 slightly, so that the ladder cage 2 can be more stably and firmly clamped on the long steel bridge 1.

[0048] It can be understood that the shock-absorbing pulley 5 has a built-in shock-absorbing strip, which is well known in the art.

[0049] For example, two shock-absorbing pulleys 5 are provided on one side of each connecting rod 6 close to the ladder cage 2. In this way, when the temperature drops, the long steel bridge 1 will shorten, and the lateral displacement of the long steel bridge 1 can be completely reduced.

[0050] See also Figure 2 and Figure 4 Furthermore, a connecting piece 8 is provided on the connecting rod 6 close to the side of the ladder cage 2.

[0051] Exemplarily, two connecting members 8 are provided on each connecting rod 6 close to the side of the elevator cage 2 , and the connecting member 8 on each connecting rod 6 is V-shaped, with the opening of the V-shape facing the elevator cage 2 .

[0052] See also Figure 2 Furthermore, a scale bar 9 is provided on the long steel bridge 1 between the two connecting rods 6 away from the side of the ladder cage 2, and a pointer is provided corresponding to the scale bar 9, and an alarm device 14 connected to the pointer is provided on the long steel bridge 1.

[0053] Furthermore, when the displacement of the pointer relative to the scale bar 9 exceeds a set value, the alarm device 14 is triggered to sound an alarm.

[0054] Furthermore, the setting value is 4 cm to 6 cm, for example, it can be 4 cm, 4.5 cm, 5 cm, 5.5 cm, 6 cm, etc.

[0055] See also Figure 5 In some embodiments, the connecting rod 6 includes two channel steels that are oppositely connected, with a spacing provided between the two channel steels, and a plurality of connecting plates 12 are symmetrically provided between the webs of the channel steels on both sides.

[0056] Furthermore, the connecting plate 12 is a first steel plate, and the thickness of the first steel plate is 18 mm to 22 mm, for example, it can be 18 mm, 18.5 mm, 19 mm, 19.5 mm, 20 mm, 20.5 mm, 21 mm, 21.5 mm, 22 mm, etc.

[0057] Furthermore, through holes 11 are provided between the uppermost connecting plates 12 and the lowermost connecting plates 12 on both sides of the long steel bridge 1 .

[0058] It can be understood that holes 11 are provided on the uppermost connecting plate 12 on each side of the long-span steel bridge 1, and the uppermost holes 11 on both sides of the long-span steel bridge 1 are symmetrical on the left and right; holes 11 are provided on the lowermost connecting plate 12 on each side of the long-span steel bridge 1, and the lowermost holes 11 on both sides of the long-span steel bridge 1 are symmetrical on the left and right.

[0059] For example, the size of the hole 11 is φ27 mm.

[0060] Furthermore, the crossbar 7 is provided between the holes 11 of the uppermost connecting plates 12 on both sides of the long steel bridge 1, and the crossbar 7 extends to the outside of the corresponding connecting rod 6;

[0061] The crossbar 7 is provided between the holes 11 of the lowermost connection plates 12 on both sides of the long steel bridge 1 , and the crossbar 7 extends to the outside of the corresponding connection rod 6 .

[0062] Exemplarily, the cross bar 7 is a φ25 mm threaded steel bar, and is extended to the outside of the connecting rod 6 and fastened by a nut 10 .

[0063] In a second aspect, an embodiment of the present application provides a connection method for a one-way slidable ladder cage 2 connection device for a long steel bridge 1, comprising:

[0064] S01. Pre-fix two connecting rods 6 on both sides of the long steel bridge 1;

[0065] S02, fixing the cross bars 7 between the connecting bars 6 above the long steel bridge 1 and below the long steel bridge, respectively, so that the connecting bars 6 and the cross bars 7 form a cross-shaped clamp 15;

[0066] S03, fixing the first plate 4 on the upper and bottom parts of the long steel bridge 1 on one side of the connecting rod 6;

[0067] S04, placing a second plate 3 on each first plate 4 away from the long steel bridge 1;

[0068] S05. Fasten the second plate 3 and the cross bar 7 to form a connecting device.

[0069] In the S01:

[0070] In some embodiments, the connecting rod 6 includes two channel steels that are oppositely connected, with a spacing provided between the two channel steels, and a plurality of connecting plates 12 are symmetrically provided between the webs of the channel steels on both sides.

[0071] Furthermore, the connecting plate 12 is a first steel plate, and the thickness of the first steel plate is 18 mm to 22 mm, for example, it can be...

[0072] Furthermore, through holes 11 are provided between the uppermost connecting plates 12 and the lowermost connecting plates 12 on both sides of the long steel bridge 1 .

[0073] It can be understood that holes 11 are provided on the uppermost connecting plate 12 on each side of the long-span steel bridge 1, and the uppermost holes 11 on both sides of the long-span steel bridge 1 are symmetrical on the left and right; holes 11 are provided on the lowermost connecting plate 12 on each side of the long-span steel bridge 1, and the lowermost holes 11 on both sides of the long-span steel bridge 1 are symmetrical on the left and right.

[0074] For example, the size of the hole 11 is φ27 mm.

[0075] In some embodiments, a plurality of the connecting devices are provided, and the connecting rod 6 of each connecting device is connected to the ladder cage 2.

[0076] Furthermore, the connecting rods 6 of two adjacent connecting devices are connected to the ladder cage 2.

[0077] There are two connecting devices. The first plate 4 is fixed to the upper part of the long steel bridge 1 between the upper cross bars 7, and the second plate 3 is provided on the upper part of the first plate 4. The cross bars 7 and the corresponding second plates 3 are welded and fixed by angle steels 13; the first plate 4 is fixed to the lower part of the long steel bridge 1 between the lower cross bars 7, and the second plate 3 is provided on the lower part of the first plate 4. The cross bars 7 and the corresponding second plates 3 are welded and fixed by angle steels 13.

[0078] Exemplarily, the first plate 4 is a stainless steel plate having a thickness of 3 mm to 6 mm, for example, 3 mm, 4 mm, 5 mm, 6 mm, etc.; the second plate 3 is a tetrachloroethylene plate.

[0079] At least two damping pulleys 5 are provided on a side of each connecting rod 6 close to the elevator cage 2 .

[0080] It can be understood that when the temperature drops, the long steel bridge 1 will shorten. The setting of the shock-absorbing pulley 5 can reduce the lateral displacement of the long steel bridge 1 slightly, so that the ladder cage 2 can be more stably and firmly clamped on the long steel bridge 1.

[0081] It can be understood that the shock-absorbing pulley 5 has a built-in shock-absorbing strip, which is well known in the art.

[0082] For example, two shock-absorbing pulleys 5 are provided on one side of each connecting rod 6 close to the ladder cage 2. In this way, when the temperature drops, the long steel bridge 1 will shorten, and the lateral displacement of the long steel bridge 1 can be completely reduced.

[0083] In some embodiments, the connecting rod 6 near one side of the ladder cage 2 is provided with a connecting piece 8.

[0084] Illustratively, two connecting pieces 8 are provided on each connecting rod 6 near one side of the ladder cage 2, and the connecting pieces 8 on each connecting rod 6 form a V shape, with the opening of the V shape facing the ladder cage 2.

[0085] In the S02, the holes 11 of the connecting plates 12 on the uppermost part of the long-span steel bridge 1 are provided with the cross bars 7, which extend to the outer side of the corresponding connecting rods 6.

[0086] In some embodiments, the holes 11 of the connecting plates 12 on the uppermost part of the long-span steel bridge 1 are provided with the cross bars 7, which extend to the outer side of the corresponding connecting rods 6.

[0087] In some embodiments, the holes 11 of the connecting plates 12 on the uppermost part of the long-span steel bridge 1 are provided with the cross bars 7, which extend to the outer side of the corresponding connecting rods 6.

[0088] Illustratively, the cross bars 7 are φ25mm threaded steel, and the cross bars 7 extending to the outer side of the connecting rods 6 are fastened by nuts 10.

[0089] In the S05, the holes 11 of the connecting plates 12 on the uppermost part of the long-span steel bridge 1 are provided with the cross bars 7, which extend to the outer side of the corresponding connecting rods 6.

[0090] In some embodiments, the second plate 3 and the cross bar 7 are welded by an angle steel 13.

[0091] In some embodiments, the long-span steel bridge 1 between the two connecting rods 6 away from one side of the ladder cage 2 is provided with a scale bar 9, and a pointer corresponding to the scale bar 9 is provided, and the long-span steel bridge 1 is provided with an alarm device 14 connected to the pointer.

[0092] Further, when the displacement of the pointer relative to the scale bar 9 exceeds the set value, the alarm device 14 is triggered to alarm.

[0093] Further, the set value is 4cm-6cm, for example, it can be 4cm, 4.5cm, 5cm, 5.5cm, 6cm, etc.

[0094] The above has described the basic concept, and it is obvious that the above detailed disclosure is only an example and does not constitute a limitation on the present application. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.

[0095] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

Claims

1. Suitable for long steel bridge one-way sliding ladder cage connection device, characterized by: Applied to long steel bridges, the connection device includes: Connecting rods are symmetrically located on both sides of the long steel bridge, and each connecting rod extends to the outside of the long steel bridge; A crossbar is fixed between the connecting rods above and below the long steel bridge, and the connecting rod and the crossbar form a cross-shaped clamp; The friction-resistant component includes a first plate fixed to the upper and lower parts of the long steel bridge, a second plate is provided on the side of each first plate away from the long steel bridge, each second plate is tightly attached to and fixedly connected to the corresponding cross bar, and the side of the second plate close to the first plate is a rough surface.

2. The one-way slidable ladder cage connection device suitable for long steel bridges according to claim 1 is characterized in that: There are multiple connecting devices, and a connecting rod of each connecting device is connected to a ladder cage.

3. The one-way slidable ladder cage connection device suitable for long steel bridges according to claim 2 is characterized in that: The connecting rods of two adjacent connecting devices are connected with a ladder cage.

4. The one-way slidable ladder cage connection device suitable for long steel bridges according to claim 2 is characterized in that: There are two connecting devices. The first plate is fixed on the upper part of the long steel bridge between the upper cross bars, and the second plate is provided on the upper part of the first plate. The cross bar and the corresponding second plate are fixed by welding through angle steel; the first plate is fixed on the lower part of the long steel bridge between the lower cross bars, and the second plate is provided on the lower part of the first plate. The cross bar and the corresponding second plate are fixed by welding through angle steel.

5. The one-way slidable ladder cage connection device suitable for long steel bridges according to claim 2 is characterized in that: At least two shock-absorbing pulleys are provided on one side of each connecting rod close to the elevator cage.

6. The one-way slidable ladder cage connection device suitable for long steel bridges according to claim 2 is characterized in that: A connecting piece is provided on the connecting rod close to one side of the elevator cage.

7. The one-way slidable ladder cage connection device suitable for long steel bridges according to claim 2 is characterized in that: A scale bar is provided on the long steel bridge between the two connecting rods away from one side of the elevator cage, a pointer is provided corresponding to the scale bar, and an alarm device connected to the pointer is provided on the long steel bridge.

8. The one-way slidable ladder cage connection device applicable to long steel bridges according to claim 7 is characterized in that: When the displacement of the pointer relative to the scale bar exceeds a set value, the alarm device is triggered to sound an alarm.

9. The one-way slidable cage connection device for long steel bridges according to claim 8 is characterized in that: The setting value is 4cm~6cm.

10. A connection method for a one-way slidable ladder cage connection device for a long steel bridge, characterized in that: include: Pre-fix two connecting rods on both sides of the long steel bridge; The cross bars are fixed between the connecting bars above and below the long steel bridge, and the connecting bars and the cross bars form a well-shaped clamp; Fix the first plate member on the upper and bottom parts of the long steel bridge on one side of the connecting rod; Place a second plate on the side of each first plate away from the long steel bridge; The second plate is fastened to the crossbar to form a connecting device.

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