Concrete curing equipment for simply supported beams of prestressed concrete railway bridges

Abstract

The present invention relates to the field of concrete curing, and in particular to a concrete curing device for simply supported beams of prestressed concrete railway bridges, comprising a reel, a shielding cloth, a mounting post, a connecting strip, and a positioning pin, etc.; a shielding cloth is wound around the reel; a mounting post is provided on the reel, and a plurality of positioning holes are provided on the mounting post; a connecting strip is slidably connected in the mounting post, and a slide groove is provided on the connecting strip; positioning pins are inserted into all positioning holes, and all positioning pins are plugged into and matched with the connecting strip. The present invention adds a blocking cloth to the shielding cloth, and a counterweight rod is connected to the blocking cloth. When the counterweight rod is placed in a soft slide rail on an adjacent shielding cloth, the blocking cloth follows the counterweight rod into the soft slide rail, and the blocking cloth fills the remaining space in the soft slide rail, thereby increasing the sealing performance of the connection between the soft slide rail and the counterweight rod and reducing steam leakage.

Description

Technical Field

[0001] The present invention relates to the field of concrete curing, in particular to concrete curing equipment for prestressed concrete simply supported beams of railway bridges. Background Art

[0002] Before performing steam curing operations on concrete bridge piers, the existing technology requires welding a fixed base or slide rail on top of the pier on site, and then installing a corresponding curing device on it to fix it to prevent the curing device from falling from the pier and being damaged. After completing the steam curing operation on the pier, the fixed base or slide rail needs to be removed, which is quite troublesome.

[0003] In the process of using steam to maintain concrete piers, before maintaining the concrete piers, it is necessary to first wrap the concrete piers with cloth, then use ropes to tie the cloth, and then transport steam to the space between the concrete piers and the cloth for maintenance. The steam is transferred upward from the bottom of the pier. After the steam is transferred to the top of the pier, the cloth that restricts the steam is attached to the periphery of the pier, making it difficult for the steam to transfer upward. The steam takes a long time to transfer to the top, and the temperature of the steam drops, resulting in a large difference between the steam temperature at the bottom of the pier and the steam temperature at the top of the pier. The maintenance treatment at the bottom and top of the pier deviates, which affects the maintenance treatment of the pier. Summary of the Invention

[0004] In order to overcome the disadvantage that the steam temperature at the bottom of the pier is greatly different from the steam temperature at the top of the pier, which causes deviation in the curing treatment of the bottom and top of the pier and affects the curing treatment of the pier, the present invention provides a concrete curing equipment for simply supported beams of prestressed concrete railway bridges.

[0005] The technical solution is as follows: A concrete curing device for simply supported beams of prestressed concrete railway bridges, comprising a winding drum and a shielding cloth; the shielding cloth is wound around the winding drum; the device also comprises a mounting column, a connecting strip and a positioning pin; the winding drum is provided with a mounting column, and a plurality of positioning holes are provided on the mounting column; a connecting strip is slidingly connected in the mounting column, and a sliding groove is provided on the connecting strip; positioning pins are inserted into all positioning holes, and all positioning pins are plugged into and matched with the connecting strip.

[0006] Optionally, all the positioning pins are provided with a pointed cone at the bottom.

[0007] Optionally, it further includes a telescopic rod and a connecting seat; all the winding drums are fixed with a plurality of telescopic rods; the telescopic parts of each adjacent telescopic rod are slidably connected to the connecting seat, and all the connecting seats are provided with fixing holes.

[0008] Optionally, a hose is also included; the bottom of the shielding cloth is connected to the hose, and the bottom of the hose is provided with a plurality of evenly distributed air holes.

[0009] Optionally, the hose is divided into two on the shielding cloth, and the number of air holes in the hose is increased accordingly.

[0010] Optionally, it also includes a soft slide rail and a counterweight rod; a soft slide rail is provided on the front side of the shielding cloth; a counterweight rod is provided at the bottom of the shielding cloth, the rear part of the counterweight rod passes through the shielding cloth, and the middle part of the counterweight rod is a rubber part.

[0011] Optionally, the soft slide rail is designed to be wavy.

[0012] Optionally, a blocking cloth is also included; the blocking cloth is fixedly connected to the rear side of the shielding cloth, the blocking cloth is fixedly connected to the counterweight rod, and the blocking cloth cooperates with the soft slide rail.

[0013] Optionally, an airbag is provided on the sealing cloth.

[0014] Optionally, a connecting pipe is also included; the front part of the soft slide rail is a metal part; the hose is connected to the connecting pipe, and the connecting pipe is connected to the airbag.

[0015] The beneficial effects of the present invention are as follows: the present invention adds a telescopic rod to the winding drum, adds a connecting seat to the telescopic part of the telescopic rod, and connects adjacent telescopic rods into a whole through the connecting seat. Before the shielding cloth is pulled out from the winding drum, the connecting seat is pushed toward the center of the pier surface, so that the telescopic part of the telescopic rod is pushed toward the center of the pier surface, so that the telescopic part of the telescopic rod and the connecting seat are pressed against the pier surface, increasing the contact area with the edge of the pier surface, and then manually nailing steel nails in the fixing holes allows the present invention to be fixed on the pier surface, thereby avoiding the movement of the winding drum and affecting its use.

[0016] The present invention adds a hose inside the shielding cloth, which wraps the bridge pier. The hose is shorter than the shielding cloth, and has evenly distributed air holes. The air holes of the hose face the bridge pier. After the pipeline of the external steam conveying equipment is connected to the hose, the steam enters the hose, and the steam is sprayed from the evenly distributed air holes in the hose onto the annular surface of the bridge pier, so that the steam can be better transferred to the top of the bridge pier, reducing the difference in steam temperature between the bottom of the bridge pier and the top of the bridge pier, so that the bottom and top of the bridge pier can receive more balanced maintenance treatment.

[0017] The present invention divides the hose into two parts inside the shielding cloth, thereby increasing the number of hose air holes accordingly, and more hose air holes are distributed in the area covered by the shielding cloth. After the steam is sprayed from the hose air holes to between the bridge pier and the shielding cloth, the steam can be better dispersed between the hose air holes and the bridge pier and the shielding cloth.

[0018] The present invention provides a soft slide rail on the front side of the shielding cloth and adds a counterweight rod at the bottom of the shielding cloth. When the shielding cloth is pulled out from the reel, the counterweight rod is placed into the soft slide rail on the adjacent shielding cloth for sliding connection, so as to better connect all the shielding cloths to each other. At the same time, through the counterweight rod at the bottom of the shielding cloth, the shielding cloth can fall downward in a vertical manner when being laid, and the position of the shielding cloth when laid is not easily shifted, thereby avoiding increasing the difficulty of laying the shielding cloth.

[0019] The present invention sets the soft slide rail into a wave shape. After the steam enters between the bridge pier and the shielding cloth, the steam can flow between the bridge pier and the shielding cloth through the wave troughs on the upper part of the soft slide rail and the wave peaks on the lower part of the soft slide rail, avoiding affecting the steam maintenance of the bridge pier.

[0020] The present invention adds a blocking cloth to the shielding cloth, and the counterweight rod is connected to the blocking cloth. When the counterweight rod is placed in the soft slide rail on the adjacent shielding cloth, the blocking cloth follows the counterweight rod into the soft slide rail. The blocking cloth fills the remaining space in the soft slide rail, thereby increasing the sealing performance of the connection between the soft slide rail and the counterweight rod and reducing steam leakage.

[0021] The present invention connects the airbag and the hose through a connecting pipe. When the hose is filled with steam, the airbag also needs to be filled and expanded, so that the airbag can further fill the remaining space in the soft slide rail, further improve the sealing of the connection between the soft slide rail and the counterweight rod, and further reduce steam leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A state diagram disclosed for the concrete curing equipment of the prestressed concrete railway bridge simply supported beam of the present invention;

[0023] Figure 2 A diagram illustrating the assembly of mounting columns, connecting strips, positioning pins, telescopic rods, and connecting seats disclosed in the concrete curing equipment for simply supported beams of prestressed concrete railway bridges of the present invention;

[0024] Figure 3 An exploded view of the structure of the mounting columns, connecting bars and positioning pins disclosed in the concrete curing equipment for the simply supported beams of prestressed concrete railway bridges of the present invention;

[0025] Figure 4 A diagram showing a first state of the shielding cloth disclosed in the concrete curing equipment for the simply supported beams of prestressed concrete railway bridges of the present invention;

[0026] Figure 5 A diagram showing the second state of the shielding cloth disclosed in the concrete curing equipment for the simply supported beams of prestressed concrete railway bridges of the present invention;

[0027] Figure 6A structural cross-sectional view of a shielding cloth disclosed in the concrete curing equipment for simply supported beams of prestressed concrete railway bridges according to the present invention.

[0028] Explanation of the reference numerals: 1-reeling drum, 2-shielding cloth, 3-mounting column, 4-connecting bar, 5-locating pin, 6-telescopic rod, 7-connecting seat, 101-hose, 110-soft slide rail, 111-counterweight rod, 112-sealing cloth, 120-connecting pipe, 31-locating hole, 41-slide groove, 51-cone, 71-fixing hole, 1101-metal part, 1111-rubber part, 1121-airbag. DETAILED DESCRIPTION

[0029] The following description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0030] Example 1

[0031] A concrete curing device for simply supported beams of prestressed concrete railway bridges, such as Figure 1-Figure 5 As shown, it includes a winding drum 1 and a shielding cloth 2; the shielding cloth 2 is wound on the winding drum 1;

[0032] It also includes a mounting column 3, a connecting strip 4 and a positioning pin 5; a mounting column 3 is provided on the winding drum 1, and two positioning holes 31 are opened on the mounting column 3; a connecting strip 4 is slidably connected to the mounting column 3, and a sliding groove 41 is opened on the connecting strip 4; positioning pins 5 are inserted into all the positioning holes 31, and all the positioning pins 5 are plugged into and matched with the connecting strip 4.

[0033] All the positioning pins 5 are provided with a pointed cone 51 at the bottom to facilitate insertion into the sliding groove 41 .

[0034] It also includes a telescopic rod 6 and a connecting seat 7; all winding drums 1 are fixed with two telescopic rods 6; the telescopic parts of every two adjacent telescopic rods 6 are slidably connected to the connecting seat 7, and all connecting seats 7 are provided with fixing holes 71, and the telescopic rod 6 and the connecting seat 7 are detachably connected.

[0035] It also includes a hose 101; the bottom of the shielding cloth 2 is connected to the hose 101, the hose 101 is shorter than the shielding cloth 2, and the bottom of the hose 101 is provided with a number of evenly distributed air holes.

[0036] The hose 101 is divided into two on the shielding cloth 2, and the number of air holes in the hose 101 increases accordingly. More air holes in the hose 101 are distributed in the area covered by the shielding cloth 2, so that the steam is better dispersed between the bridge pier and the shielding cloth 2.

[0037] Before performing steam curing of concrete, the existing technology requires welding a fixed base or slide rail on top of the bridge pier on site, and then installing the corresponding curing device on it and fixing it to prevent the curing device from falling from the bridge pier and being damaged. After completing the steam curing operation of the bridge pier, the fixed base or slide rail needs to be removed, which is quite troublesome.

[0038] It should be noted that when using the present invention, multiple embodiments of the present invention need to be combined for use.

[0039] Before using the present invention to perform steam curing operations on concrete bridge piers, the user carries the present invention to the site and places the present invention on the surface of the bridge pier. When placing the present invention, the mounting post 3 is located in the winding drum 1, and the connecting strip 4 is inserted into the mounting post 3. After the connecting strip 4 is inserted into the specified depth, a positioning pin 5 is used to insert the connecting strip 4 into the positioning hole 31 at one end of the mounting post 3. The positioning pin 5 passes through the positioning hole 31 and is inserted into the connecting strip 4 located in the mounting post 3. The positioning pin 5 presses on the connecting strip 4, so that the connecting strip 4 cannot continue to slide in the mounting post 3. By adding a pointed cone 51 at the bottom of the positioning pin 5, the positioning pin 5 presses on the connecting strip 4. After the installation, the pointed cone 51 will be inserted into the connecting strip 4, which can better restrict and fix the connecting strip 4. After the fixing of the connecting strip 4 is completed, the other end of the connecting strip 4 is inserted into the adjacent mounting post 3, and the above action is repeated to restrict and fix the other end of the connecting strip 4 again. After fixing the other end of the connecting strip 4, the adjacent winding drum 1 is installed on the adjacent mounting post 3, and then the above action is repeated to assemble the mounting post 3, connecting strip 4, positioning pin 5, telescopic rod 6, connecting seat 7, winding drum 1 and shielding cloth 2. When the placement of the present invention is completed, the last placed mounting post 3 and connecting strip 4 are connected by repeating the above action. At this time, the present invention is as shown in FIG. Figure 2 In the state shown, the present invention is hung on the surface of the pier, and does not need to be fixed by welding a fixed base or a slide rail, which is more convenient to use. The user gradually pulls out the shielding cloth 2 on the reel 1, and the shielding cloth 2 hangs down from the top of the pier. The hanging shielding cloth 2 is distributed around the pier. When all the shielding cloths 2 hang down to the bottom surface around the pier, a layer of cloth is laid on the present invention, and there is a hole in the center of the cloth. The hole is used for steam discharge. The cloth covers the present invention and the top of the pier that needs to be maintained. Ropes are used to wrap and bundle the shielding cloths 2 distributed around the pier and the cloth covering the top of the pier from bottom to top, so that the shielding cloth 2 around the pier wraps and seals the pier. Then, the pipe of the external steam equipment is inserted between the pier and the shielding cloth 2. The external steam equipment transports steam to between the pier and the shielding cloth 2, and the steam maintenance operation of the pier begins.

[0040] Taking into account that after the shielding cloth 2 is pulled out from the reel 1, the reel 1 replaces the shielding cloth 2 and is pressed on the edge of the pier surface, the contact area with the edge of the pier surface is reduced, and the reel 1 is likely to move, affecting the use. In order to better fix the present invention, a telescopic rod 6 is added to the reel 1, and a connecting seat 7 is added to the telescopic part of the telescopic rod 6. The adjacent telescopic rods 6 are connected as a whole through the connecting seat 7. Before the shielding cloth 2 is pulled out from the reel 1, the connecting seat 7 is pushed toward the center of the pier surface, so that the telescopic part of the telescopic rod 6 is pushed toward the center of the pier surface, so that the telescopic part of the telescopic rod 6 and the connecting seat 7 are pressed on the pier surface, increasing the contact area with the edge of the pier surface, and then steel nails are manually hammered into the fixing holes 71 to fix the present invention on the pier surface, avoiding the movement of the reel 1 and affecting the use.

[0041] Considering that after the pipeline of the external steam conveying equipment is inserted into the bridge pier and the shielding cloth 2, when the steam is conveyed between the bridge pier and the shielding cloth 2, the steam is transferred upward from the bottom of the bridge pier. After the steam is transferred to the top of the bridge pier, because the shielding cloth 2 is attached to the periphery of the bridge pier, it is difficult for the steam to transfer upward. The time for the steam to transfer to the top is long, and the temperature of the steam drops, resulting in a large difference between the steam temperature at the bottom of the bridge pier and the steam temperature at the top of the bridge pier. The maintenance treatment of the bottom and top of the bridge pier deviates, resulting in the maintenance treatment of the bridge pier being affected. By adding a hose 101 in the shielding cloth 2, the shielding cloth 2 wraps the bridge pier, and the hose 101 is shorter than the shielding cloth 2. The hose 101 is provided with evenly distributed air holes, and the air holes of the hose 101 face Bridge pier, after connecting the pipeline of the external steam delivery equipment with the hose 101, the steam enters the hose 101, and the steam is sprayed onto the annular surface of the bridge pier from the evenly distributed air holes of the hose 101, so that the steam can be better transferred to the top of the bridge pier, reducing the difference in steam temperature between the bottom of the bridge pier and the top of the bridge pier, so that the bottom and top of the bridge pier can receive more balanced maintenance treatment. By dividing the hose 101 into two in the shielding cloth 2, the number of air holes in the hose 101 is increased accordingly, and more air holes in the hose 101 are distributed in the area covered by the shielding cloth 2. After the steam is sprayed from the air holes in the hose 101 to between the bridge pier and the shielding cloth 2, the steam can be better dispersed between the air holes in the hose 101 and the shielding cloth 2.

[0042] Example 2

[0043] On the basis of Example 1, Figure 4-Figure 6 As shown, it also includes a soft slide rail 110 and a counterweight rod 111; a soft slide rail 110 is provided on the front side of the shielding cloth 2; a counterweight rod 111 is provided at the bottom of the shielding cloth 2, the rear part of the counterweight rod 111 passes through the shielding cloth 2, and the middle part of the counterweight rod 111 is a rubber part 1111.

[0044] The soft slide rail 110 is designed in a wave shape to facilitate the flow of steam between the bridge pier and the shielding cloth 2.

[0045] The back side of the shielding cloth 2 is fixed with the blocking cloth 112 , the blocking cloth 112 is fixed with the counterweight rod 111 , and the blocking cloth 112 cooperates with the soft slide rail 110 .

[0046] An air bag 1121 is provided on the sealing cloth 112 to enhance the sealing performance.

[0047] It also includes a connecting pipe 120 ; the front part of the soft slide rail 110 is a metal part 1101 ; the hose 101 is connected to the connecting pipe 120 , and the connecting pipe 120 is connected to the airbag 1121 .

[0048] When laying the shade cloth 2, the shade cloth 2 is relatively light and cannot fall straight down. The laying position of the shade cloth 2 is easily shifted, which increases the difficulty of laying the shade cloth 2. By providing a soft slide rail 110 on the front side of the shade cloth 2 and adding a counterweight rod 111 at the bottom of the shade cloth 2, when the shade cloth 2 is pulled out from the reel 1, the counterweight rod 111 is placed in the soft slide rail 110 on the adjacent shade cloth 2 for sliding connection, so as to better connect all the shade cloths 2 with each other. At the same time, through the counterweight rod 111 at the bottom of the shade cloth 2, the shade cloth 2 is allowed to fall downward in a vertical manner when being laid, and the laying position of the shade cloth 2 is not easy to shift, which avoids increasing the difficulty of laying the shade cloth 2. By setting the middle part of the counterweight rod 111 to the rubber part 1111, the counterweight rod 111 can be bent to better adapt to the shape of the bridge pier.

[0049] Taking into account that after the bridge pier is wrapped with the shielding cloth 2, the shielding cloth 2 and the bridge pier may be stuck to each other, and steam is not easy to flow between the bridge pier and the shielding cloth 2, affecting the steam curing of the bridge pier, by setting the soft slide rail 110 to a wave shape, after the steam enters between the bridge pier and the shielding cloth 2, the steam can pass through the trough of the upper part of the soft slide rail 110 and the peak of the lower part of the soft slide rail 110 and flow between the bridge pier and the shielding cloth 2, avoiding affecting the steam curing of the bridge pier.

[0050] Considering that the counterweight rod 111 only occupies part of the space in the soft slide rail 110, the rest of the space in the soft slide rail 110 is vacant, and the steam will be transferred outward from the connection between the soft slide rail 110 and the counterweight rod 111, resulting in waste of steam. By adding a sealing cloth 112 to the shielding cloth 2, the counterweight rod 111 is connected to the sealing cloth 112, and when the counterweight rod 111 is placed in the soft slide rail 110 on the adjacent shielding cloth 2, the sealing cloth 112 follows the counterweight rod 111 into the soft slide rail 110, and the sealing cloth 112 fills the rest of the space in the soft slide rail 110, thereby increasing the sealing performance of the connection between the soft slide rail 110 and the counterweight rod 111, and reducing steam leakage. The airbag 1121 is used to better fill the rest of the space in the soft slide rail 110, thereby increasing the sealing performance of the connection between the soft slide rail 110 and the counterweight rod 111, and reducing steam leakage.

[0051] The airbag 1121 is connected to the hose 101 through the connecting pipe 120. When the steam fills the hose 101, the airbag 1121 needs to be filled and expanded at the same time, so that the airbag 1121 can further fill the remaining space in the soft slide rail 110, further improve the sealing of the connection between the soft slide rail 110 and the counterweight rod 111, and further reduce steam leakage. In order to prevent the airbag 1121 from stretching the soft slide rail 110 when it expands, causing the soft slide rail 110 and the counterweight rod 111 to lose connection and affect use, by setting the front part of the soft slide rail 110 to the metal part 1101, only the rear part of the soft slide rail 110 will be affected when the airbag 1121 expands, avoiding the soft slide rail 110 and the counterweight rod 111 to lose connection and affect use.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A concrete curing device for simply supported beams of prestressed concrete railway bridges, comprising a winding drum (1) and a shielding cloth (2); the shielding cloth (2) is wound around the winding drum (1); and is characterized in that: It also includes a mounting post (3), a connecting strip (4) and a positioning pin (5); the winding drum (1) is provided with a mounting post (3), and the mounting post (3) is provided with a plurality of positioning holes (31); the mounting post (3) is slidably connected with the connecting strip (4), The connecting strip (4) is provided with a sliding groove (41); all the positioning holes (31) are plugged with positioning pins (5), and all the positioning pins (5) are plugged and matched with the connecting strip (4); All the positioning pins (5) are provided with a pointed cone (51) at the bottom; It also includes a telescopic rod (6) and a connecting seat (7); all the winding drums (1) are fixedly connected with a plurality of telescopic rods (6); the telescopic parts of each adjacent telescopic rod (6) are slidably connected to the connecting seat (7), and all the connecting seats (7) are provided with fixing holes (71); The utility model also comprises a hose (101); the bottom of the shielding cloth (2) is connected with the hose (101), and the bottom of the hose (101) is provided with a plurality of evenly distributed air holes.

2. The concrete curing equipment for prestressed concrete railway bridge simply supported beams according to claim 1, characterized in that: The hose (101) is divided into two on the shielding cloth (2), and the number of air holes in the hose (101) increases accordingly.

3. The concrete curing equipment for prestressed concrete railway bridge simply supported beams according to claim 1, characterized in that: The utility model also comprises a soft slide rail (110) and a counterweight rod (111); the front side of the shielding cloth (2) is provided with the soft slide rail (110); the bottom of the shielding cloth (2) is provided with a counterweight rod (111); the rear part of the counterweight rod (111) passes through the shielding cloth (2); and the middle part of the counterweight rod (111) is a rubber part (1111).

4. The concrete curing equipment for prestressed concrete railway bridge simply supported beams according to claim 3, characterized in that: The soft slide rail (110) is designed in a wave shape.

5. The concrete curing equipment for prestressed concrete railway bridge simply supported beams according to claim 3, characterized in that: It also includes a blocking cloth (112); the blocking cloth (112) is fixedly connected to the rear side of the shielding cloth (2); the blocking cloth (112) is fixedly connected to the counterweight rod (111); and the blocking cloth (112) cooperates with the soft slide rail (110).

6. The concrete curing equipment for prestressed concrete railway bridge simply supported beams according to claim 5, characterized in that: An air bag (1121) is provided on the sealing cloth (112).

7. The concrete curing equipment for prestressed concrete railway bridge simply supported beams according to claim 6, characterized in that: The invention also includes a connecting pipe (120); the front part of the soft slide rail (110) is a metal part (1101); the hose (101) is connected to the connecting pipe (120), and the connecting pipe (120) is connected to the air bag (1121).

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