Concrete curing equipment for simply supported beam of prestressed concrete railway bridge

Abstract

The invention relates to the field of concrete curing, in particular to concrete curing equipment for a simply supported beam of a prestressed concrete railroad bridge, which comprises a winding drum, shielding cloth, a mounting column, a connecting strip, a positioning pin and the like, shielding cloth is wound on the winding drum; a mounting column is arranged on the winding drum, and a plurality of positioning holes are formed in the mounting column; a connecting strip is slidably connected into the mounting column, and a sliding groove is formed in the connecting strip; and positioning pins are inserted into all the positioning holes, and all the positioning pins are matched with the connecting strips in an inserted mode. The blocking cloth is additionally arranged on the shielding cloth, the balance weight lever is connected with the blocking cloth, when the balance weight lever is placed in the soft sliding rail on the adjacent shielding cloth, the blocking cloth enters the soft sliding rail along with the balance weight lever, the other space in the soft sliding rail is filled with the blocking cloth, the sealing performance of the connecting position of the soft sliding rail and the balance weight lever is improved, and the service life of the balance weight lever is prolonged. And steam leakage is reduced.

Description

Technical Field

[0001] The invention relates to the field of concrete curing, and in particular to concrete curing equipment for a prestressed concrete railway bridge simply supported beam. Background Art

[0002] Before the existing technology performs steam curing operations on concrete piers, it is necessary to weld a fixed base or a slide rail on top of the pier on site, and then install a corresponding curing device thereon and fix it to prevent the curing device from falling from the pier and being damaged. After completing the steam curing operations on the piers, the fixed base or the slide rail needs to be removed, which is rather troublesome.

[0003] In the process of using steam for concrete pier maintenance, before the concrete pier maintenance, it is necessary to first wrap the concrete pier with cloth, then use ropes to tie the cloth, and then transport the steam to the space between the concrete pier 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, it is difficult for the steam to transfer upward because the cloth that restricts the steam is attached to the periphery of the pier. 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 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 that at the top of the pier, the curing treatment at the bottom of the pier and the top of the pier deviates, thus affecting the curing treatment of the pier, the present invention provides concrete curing equipment for simply supported beams of prestressed concrete railway bridges.

[0005] The technical solution is as follows: a concrete maintenance equipment for simply supported beams of prestressed concrete railway bridges, comprising a winding drum and a shielding cloth; the shielding cloth is wound on the winding drum; it 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 opened on the mounting column; a connecting strip is slidably connected inside the mounting column, and a sliding groove is opened on the connecting strip; positioning pins are inserted into all the positioning holes, and all the 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 also includes a telescopic rod and a connecting seat; all the winding drums are fixedly connected with a plurality of telescopic rods; the telescopic parts of each adjacent telescopic rod are slidably connected with 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 air bag is provided on the blocking 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, connects adjacent telescopic rods into a whole through the connecting seat, and before pulling the shielding cloth out of the winding drum, pushes the connecting seat 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 nails are driven into the fixing holes to fix the present invention on the pier surface, thereby preventing the winding drum from moving and affecting the use.

[0016] The present invention adds a hose inside the shielding cloth, the shielding cloth wraps the bridge pier, the hose is shorter than the shielding cloth, and evenly distributed air holes are opened on the hose. The air holes of the hose face the bridge pier. After the pipeline of the external steam conveying equipment is connected with the hose, the steam enters the hose, and the steam is sprayed onto the annular surface of the bridge pier from the evenly distributed air holes of the hose, so that the steam can be better transferred to the top of the bridge pier, reducing the difference in steam temperature at the bottom of the bridge pier and the top of the bridge pier, so that the bottom and the 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, and the number of hose air holes is increased accordingly. More hose air holes are distributed in the area covered by the shielding cloth. After 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 winding drum, 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 being laid is not easy to shift, thereby avoiding increasing the difficulty of laying the shielding cloth.

[0019] The present invention sets the soft slide rail to be wavy. 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 troughs on the upper part of the soft slide rail and the peaks on the lower part of the soft slide rail, thereby 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, and the blocking cloth fills the remaining space in the soft slide rail, thereby increasing the sealing of the connection between the soft slide rail and the counterweight rod and reducing steam leakage.

[0021] The present invention connects the airbag with 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 by the concrete curing equipment for the prestressed concrete railway bridge simply supported beam of the present invention;

[0023] Figure 2 A splicing diagram of the installation column, the connection strip, the positioning pin, the telescopic rod and the connection seat disclosed in the concrete curing equipment of the prestressed concrete railway bridge simply supported beam of the present invention;

[0024] Figure 3 An exploded view of the structure of the installation column, the connection bar and the positioning pin disclosed in the concrete curing equipment of the prestressed concrete railway bridge simply supported beam of the present invention;

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

[0026] Figure 5 A second state diagram of the shielding cloth disclosed by the concrete curing equipment for the simply supported beam of the prestressed concrete railway bridge of the present invention;

[0027] Figure 6The present invention is a cross-sectional view of the structure of the shielding cloth disclosed in the concrete maintenance equipment for the simply supported beam of the prestressed concrete railway bridge.

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

[0029] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0030] Example 1

[0031] A concrete curing device for a prestressed concrete railway bridge simply supported beam, 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 around the winding drum 1;

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

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

[0034] It also includes a telescopic rod 6 and a connecting seat 7; all the winding drums 1 are fixedly connected to two telescopic rods 6; the telescopic parts of every two adjacent telescopic rods 6 are slidably connected to the connecting seat 7, and all the 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 plurality of evenly distributed air holes.

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

[0037] Before the existing technology performs steam curing operations on concrete, it is necessary to weld a fixed base or a slide rail on the top of the bridge pier on site, and then install a corresponding curing device thereon and fix it to prevent the curing device from falling from the bridge pier and being damaged. After completing the steam curing operations on the bridge pier, the fixed base or the slide rail needs to be removed, which is rather troublesome.

[0038] It should be noted that when using the present invention, multiple embodiments of the present invention need to be used in combination.

[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 installation column 3 is located in the winding drum 1, and the connecting strip 4 is inserted into the installation column 3. After the connecting strip 4 is inserted into the specified depth, the positioning pin 5 is used to insert the connecting strip 4 into the positioning hole 31 at one end of the installation column 3. The positioning pin 5 passes through the positioning hole 31 and is inserted into the connecting strip 4 located in the installation column 3. The positioning pin 5 is pressed on the connecting strip 4 so that the connecting strip 4 cannot continue to slide in the installation column 3. By adding a pointed cone 51 at the bottom of the positioning pin 5, the positioning pin 5 is pressed on the connecting strip 4. After the mounting, the pointed cone 51 will be inserted into the connecting strip 4, so as to 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 column 3, and the above action is repeated to restrict and fix the other end of the connecting strip 4 again. After the other end of the connecting strip 4 is fixed, the adjacent winding drum 1 is installed into the adjacent mounting column 3, and then the above action is repeated to assemble the mounting column 3, the connecting strip 4, the positioning pin 5, the telescopic rod 6, the connecting seat 7, the winding drum 1 and the shielding cloth 2. When the placement of the present invention is completed, the last placed mounting column 3 and the 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, so it is more convenient to use. The user gradually pulls out the shielding cloth 2 on the winding drum 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 the discharge of steam. The cloth covers the present invention and the top of the pier that needs to be maintained, and ropes are used to wrap and bind 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, and then the pipeline of the external steam equipment is inserted between the pier and the shielding cloth 2, and 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] Considering 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 driven into the fixing holes 71 to fix the present invention on the pier surface, thereby avoiding the movement of the reel 1 and affecting the use.

[0041] Considering that after the pipeline of the external steam delivery equipment is inserted into the bridge pier and the shielding cloth 2, when the steam is delivered 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 the top of the pier deviates, which affects the maintenance treatment of the bridge pier. 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 The 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 from the evenly distributed pores of the hose 101 onto the annular surface of the pier, so that the steam can be better transferred to the top of the pier, reducing the difference in steam temperature between the bottom of the pier and the top of the pier, so that the bottom and the top of the pier can receive more balanced maintenance treatment, and by dividing the hose 101 into two in the shielding cloth 2, the number of pores of the hose 101 is increased accordingly, and more pores of the hose 101 are distributed in the area covered by the shielding cloth 2. After the steam is sprayed from the pores of the hose 101 to between the pier and the shielding cloth 2, the steam can be better dispersed between the pores of the hose 101 and the pier 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, which facilitates the flow of steam between the bridge pier and the shielding cloth 2.

[0045] 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 .

[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 shielding cloth 2, since the shielding cloth 2 is relatively light, the shielding cloth 2 cannot fall straight down, and the laying position of the shielding cloth 2 is easily shifted, which increases the difficulty of laying the shielding cloth 2. By providing a soft slide rail 110 on the front side of the shielding cloth 2 and adding a counterweight rod 111 at the bottom of the shielding cloth 2, when the shielding cloth 2 is pulled out from the winding drum 1, the counterweight rod 111 is placed into the soft slide rail 110 on the adjacent shielding cloth 2 for sliding connection, so as to better connect all the shielding cloths 2 to each other. At the same time, through the counterweight rod 111 at the bottom of the shielding cloth 2, the shielding cloth 2 is allowed to fall downward in a vertical manner when being laid, and the laying position of the shielding cloth 2 is not easy to shift, so as to avoid increasing the difficulty of laying the shielding cloth 2. By setting the middle part of the counterweight rod 111 as 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 in contact with each other, and steam is not easy to flow between the bridge pier and the shielding cloth 2, thus affecting the steam curing of the bridge pier, by setting the soft slide rail 110 to be wavy, after the steam enters between the bridge pier and the shielding cloth 2, the steam can pass through the troughs at the top of the soft slide rail 110 and the peaks at the bottom of the soft slide rail 110 and flow between the bridge pier and the shielding cloth 2, thus avoiding affecting the steam curing of the bridge pier.

[0050] Considering that the counterweight rod 111 only occupies part of the space inside the soft slide rail 110, the rest of the space inside 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 a 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 into 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 inside 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 the leakage of steam. The airbag 1121 can better fill the rest of the space inside 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 the leakage of steam.

[0051] The airbag 1121 is connected to the hose 101 through the connecting pipe 120. When the hose 101 is filled with steam, the airbag 1121 also needs to be filled and expanded, 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 as the metal part 1101, when the airbag 1121 expands, only the rear part of the soft slide rail 110 will be affected, 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 principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A concrete curing device for a simply supported beam of a prestressed concrete railway bridge, comprising a winding drum (1) and a shielding cloth (2); the shielding cloth (2) is wound around the winding drum (1); the device is characterized in that: The invention also comprises a mounting column (3), a connecting strip (4) and a positioning pin (5); the winding drum (1) is provided with a mounting column (3), and a plurality of positioning holes (31) are formed on the mounting column (3); a connecting strip (4) is slidably connected inside the mounting column (3), and a sliding groove (41) is formed on the connecting strip (4); positioning pins (5) are inserted into all the positioning holes (31), and all the positioning pins (5) are plugged and matched with the connecting strip (4).

2. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: The bottoms of all the positioning pins (5) are provided with sharp cones (51).

3. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to claim 1, characterized in that: It also includes telescopic rods (6) and connecting seats (7); all the winding drums (1) are fixedly connected to a plurality of telescopic rods (6); the telescopic parts of each adjacent telescopic rod (6) are slidably connected to the connecting seats (7), and all the connecting seats (7) are provided with fixing holes (71).

4. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to any one of claims 1 to 3, characterized in that: It also comprises a hose (101); the bottom of the shielding cloth (2) is connected to the hose (101), and the bottom of the hose (101) is provided with a plurality of evenly distributed air holes.

5. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to claim 4, 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) is increased accordingly.

6. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to claim 4, characterized in that: It 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).

7. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to claim 6, characterized in that: The soft slide rail (110) is designed in a wave shape.

8. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to claim 6, 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).

9. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to claim 8, characterized in that: An air bag (1121) is provided on the sealing cloth (112).

10. The concrete curing equipment for a prestressed concrete railway bridge simply supported beam according to claim 9, characterized in that: 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 air bag (1121).

Images