Beam end maintenance clothes suitable for railway prefabricated box girder

Abstract

The utility model belongs to the technical field of precast beam end maintenance, and provides a piece of railway precast box beam end maintenance clothes, which comprises a clothes hanger attached to a beam end, and the appearance of the clothes hanger is matched with the beam end; the clothes hanger comprises a main frame and an auxiliary frame, the main frame is tightly attached to the beam end and completely covers the beam end, a water retention interlayer is arranged between the main frame and the beam end, a via hole corresponding to an anchorage device on the surface of the beam end is formed in the surface of the water retention interlayer, the auxiliary frame is arranged in the center of the main frame corresponding to a beam cavity, the auxiliary frame extends into the beam cavity to form a telescopic arm, and the telescopic arm is arranged in the middle of the main frame. The upper end and the lower end of the telescopic arm are supported on the upper cavity wall and the lower cavity wall of the beam cavity respectively. The maintenance mode can ensure that the beam end is in a wet state for a long time, the maintenance quality of the beam end is ensured, the water-retaining property is excellent, the problem of waste of maintenance water resources is avoided, and the maintenance cost is prevented from being increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated beam end maintenance, and in particular relates to a beam end maintenance garment suitable for railway prefabricated box beams. Background Art

[0002] If the precast beam concrete is not cured in time when it is stored in a hot, dry environment or windy weather in summer, the moisture on the concrete surface will evaporate too quickly and dehydration will occur. The cement particles that have formed a gel cannot be fully hydrated and cannot be converted into stable crystals. The lack of sufficient bonding strength will cause flaking or powdery shedding on the concrete surface. The premature evaporation of moisture will also produce large shrinkage deformation, leading to concrete shrinkage cracks, which are especially prone to occur in the weak maintenance areas at the ends of the beams.

[0003] Prefabricated box girders are mostly cured by self-spraying. Most units focus on deck maintenance, web maintenance and maintenance inside the beam box at the bottom of the beam for box girders, but end maintenance is often neglected. The concrete at the end of the beam must withstand the transfer of the overall prestress of the prefabricated beam, and the working anchor must be fixed inside the concrete at the end of the beam. Therefore, the strength quality of the concrete at the end of the beam directly affects the transfer of the prestress of the beam body. If the strength is insufficient, it is easy to cause the anchor plate to be crushed and the working anchor to sink into the concrete, causing prestress failure and seriously affecting the quality of the prefabricated beam.

[0004] At present, the existing maintenance methods for beam ends mostly adopt watering maintenance or spraying directly onto the beam ends. The water retention is poor, and the beam ends may be air-dried or sun-dried before they can fully absorb the water. The maintenance quality of the beam ends cannot be guaranteed, which leads to a waste of maintenance water resources and increased maintenance costs.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0006] The purpose of the utility model is to overcome the problems in the above-mentioned prior art that the maintenance method for the ends of prefabricated box girders has poor water retention, low maintenance quality and high maintenance cost, and to provide a maintenance clothing suitable for the ends of prefabricated box girders for railways.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A maintenance garment suitable for the ends of railway prefabricated box girders comprises: a hanger, the hanger is attached to the ends of the girders, and the shape of the hanger matches the ends of the girders; the hanger comprises: a main frame and a sub-frame, the main frame is in close contact with the ends of the girders and covers them completely, a water-retaining interlayer is provided between the main frame and the ends of the girders, the surface of the water-retaining interlayer is provided with through holes corresponding to anchors on the surfaces of the ends of the girders, the sub-frame is arranged at the center of the main frame corresponding to the girders cavity, the sub-frame has a telescopic arm extending into the girders cavity, and the upper and lower ends of the telescopic arm are respectively supported on the upper cavity wall and the lower cavity wall of the girders cavity.

[0009] In the above-described curing clothes for ends of railway prefabricated box girders, preferably, the clothes hanger is a light metal frame.

[0010] Preferably, the water-retaining interlayer is integrally fixed to the main frame;

[0011] The water-retaining interlayer comprises: a hard board layer and a sponge layer, wherein the hard board layer contacts the main frame, and the sponge layer contacts the beam end.

[0012] Preferably, a door-shaped frame that can be opened and closed is provided in the middle of the sub-frame.

[0013] Preferably, the corresponding beam cavity is covered with a sun protection layer on the outer side of the sub-frame.

[0014] Preferably, the telescopic arm comprises: a lower branch pipe and an upper branch arm, and an extension arm is connected between the lower branch pipe and the sub-frame.

[0015] Preferably, the upper arm is divided into a threaded section and a smooth section, and the threaded section is located at the lower part of the upper arm, so that the threaded section is threadedly sleeved in the lumen of the lower branch pipe;

[0016] The smooth section is located at the upper part of the upper support arm, and a handle is arranged on the outer side of the smooth section.

[0017] Preferably, a support plate is fixed to the bottom end of the lower branch pipe and the top end of the upper branch arm.

[0018] Beneficial effects: The maintenance method of the utility model can keep the beam end moist for a long time, ensure the maintenance quality of the beam end, and the utility model has excellent water retention, will not cause the problem of maintenance water waste, and avoid increasing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0020] Figure 1 It is a practical application schematic diagram of the utility model;

[0021] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0022] Figure 3 for Figure 1 A schematic diagram of the main view;

[0023] Figure 4 It is an overall schematic diagram of the hanger structure of the utility model;

[0024] Figure 5 for Figure 4 Rear view schematic diagram of .

[0025] In the figure: 1. main frame; 2. sub-frame; 3. through hole; 4. hard board layer; 5. sponge layer; 6. door-shaped frame; 7. sun protection layer; 8. lower branch pipe; 9. upper support arm; 10. extension arm; 11. handle; 12. support board. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the present invention.

[0027] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0029] Embodiment: This embodiment aims to provide a curing clothing suitable for the ends of railway prefabricated box girders, the main function of which is to ensure that the ends of the girders are kept moist for a long time without wasting curing water resources.

[0030] Reference Figure 1 and Figure 2, including: a clothes hanger that is integrally attached to the end of the beam, the shape of the clothes hanger matches the end of the beam, and the clothes hanger is a light metal frame, which is convenient for its transfer. Specifically, the clothes hanger includes: a main frame 1 and a sub-frame 2, the main frame 1 is in close contact with the end of the beam and covers it completely, a water-retaining interlayer is provided between the main frame 1 and the end of the beam, and a through hole 3 corresponding to the anchor on the surface of the beam end is provided on the surface of the water-retaining interlayer, so that the anchor can pass through the through hole 3 to avoid interference with the installation of the water-retaining interlayer by the anchor, and the water-retaining interlayer is fixed to the main frame 1 as a whole by screws, and the water-retaining interlayer includes: a hard board layer 4 and a sponge layer 5, the hard board layer 4 is in contact with the main frame 1, and the sponge layer 5 is in contact with the end of the beam, wherein the cardboard layer can prevent the sun from directly irradiating the sponge layer 5, and prevent the curing water accumulated in the sponge layer 5 from evaporating quickly, and at the same time, the hard board layer 4 can also prevent the wind from blowing directly to the sponge layer 5, so as to retain water for the sponge layer 5.

[0031] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 , telescopic arms are extended into the beam cavity on both sides of the sub-frame 2, and the upper and lower ends of the telescopic arms are respectively supported on the upper cavity wall and the lower cavity wall of the beam cavity, and the entire hanger is stably fixed on the beam end through the telescopic arms. An openable and closable door-shaped frame 6 is provided in the middle of the sub-frame 2 so that the staff can enter the beam cavity to adjust the supporting state of the telescopic arms; specifically, the telescopic arms include: a lower branch pipe 8 and an upper support arm 9, and two or more extension arms 10 are connected between the lower branch pipe 8 and the sub-frame 2, and the extension arms 10 are in a horizontal state. Since the sub-frame 2 is a frame-type structure, During actual production, the end of the extension arm 10 can be welded to the intersection of the two frame rods on the sub-frame 2, which can further enhance the stability of the connection between the extension arm 10 and the sub-frame 2; the upper support arm 9 is divided into a threaded section and a smooth section, the threaded section is located at the lower part of the upper support arm 9, so that the threaded section is threadedly sleeved in the lumen of the lower branch pipe 8, the smooth section is located at the upper part of the upper support arm 9, and a handle 11 is provided on the outer side of the smooth part, through which the staff can conveniently rotate the upper support arm 9, so that the upper support arm 9 can be contracted and extended based on the rotation direction of the handle 11.

[0032] In this embodiment, a support plate 12 is fixed to the bottom end of the lower branch pipe 8 and the top end of the upper support arm 9. The support plate 12 can expand the contact surface between the end of the telescopic arm and the wall of the beam cavity, thereby enhancing the supporting strength of the telescopic arm itself.

[0033] In this embodiment, a sun protection layer 7 is covered on the outer side of the sub-frame 2 corresponding to the beam cavity, the purpose of which is to ensure the humidity inside the beam cavity and enhance the practicality of the curing clothing.

[0034] In actual use, if the clothes hanger is too heavy as a whole, it can also be hoisted to the front of the beam end, and the clothes hanger can be made close to the beam end and the edges of the two can overlap. At this time, the lower end of the telescopic arm is just in contact with the bottom of the beam cavity, and then the staff can enter the beam cavity by opening the door-shaped frame 6 in the middle of the sub-frame 2, and then adjust the telescopic arm so that its upper and lower ends are respectively supported on the top and bottom of the beam cavity, and then the hoisting equipment can be removed. Finally, the staff can sprinkle water on the sponge layer 5 of the water-retaining interlayer, and the curing water is accumulated in the sponge layer 5 to keep the end of the box beam moist at all times.

[0035] The maintenance method of the beam end curing coat provided in this embodiment can keep the beam end moist for a long time, ensure the maintenance quality of the beam end, and the curing coat has excellent water retention, so there will be no problem of wasting curing water resources, thus avoiding increasing the maintenance cost.

[0036] It should be understood that the above description is merely exemplary and the embodiments of the present application do not limit this.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A protective cover for the ends of railway prefabricated box girders, characterized in that: include: A clothes hanger is attached to the end of the beam, and the shape of the clothes hanger matches the end of the beam; The clothes hanger includes: a main frame and a sub-frame, the main frame is in close contact with the beam end and covers it completely, a water-retaining interlayer is provided between the main frame and the beam end, the surface of the water-retaining interlayer is provided with through holes corresponding to the anchors on the surface of the beam end, the sub-frame is arranged in the center of the main frame corresponding to the beam cavity, the sub-frame extends a telescopic arm into the beam cavity, and the upper and lower ends of the telescopic arm are respectively supported on the upper cavity wall and the lower cavity wall of the beam cavity.

2. The protective clothing for the ends of railway prefabricated box girders according to claim 1 is characterized in that: The clothes hanger is a light metal frame.

3. The protective clothing for the ends of railway prefabricated box girders according to claim 1 is characterized in that: The water-retaining interlayer is integrally fixed to the main frame; The water-retaining interlayer comprises: a hard board layer and a sponge layer, wherein the hard board layer contacts the main frame, and the sponge layer contacts the beam end.

4. The protective clothing for ends of railway prefabricated box girders according to claim 1 is characterized in that: A door-shaped frame which can be opened and closed is arranged in the middle of the sub-frame.

5. The protective clothing for ends of railway prefabricated box girders according to claim 1 is characterized in that: The corresponding beam cavity is covered with a sun protection layer on the outer side of the sub-frame.

6. The protective clothing for ends of railway prefabricated box girders according to claim 1 is characterized in that: The telescopic arm comprises a lower branch pipe and an upper branch arm, and an extension arm is connected between the lower branch pipe and the sub-frame.

7. The protective clothing for ends of railway prefabricated box girders according to claim 6 is characterized in that: The upper arm is divided into a threaded section and a smooth section, wherein the threaded section is located at the lower part of the upper arm, so that the threaded section is threadably sleeved in the lumen of the lower branch pipe; The smooth section is located at the upper part of the upper support arm, and a handle is arranged on the outer side of the smooth section.

8. The protective clothing for ends of railway prefabricated box girders according to claim 7 is characterized in that: The bottom end of the lower branch pipe and the top end of the upper support arm are both fixed with support plates.

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