Concrete precast beam maintenance device

Abstract

The invention provides a precast concrete beam curing device, and belongs to the technical field of constructional engineering. The concrete precast beam curing device comprises a first spraying pipe, a pipeline fixing device and a beam body bearing table. The first spraying pipe is used for providing a water source for concrete precast beam maintenance, and first spraying holes are formed in the first spraying pipe in the length direction. The pipeline fixing device extends in the length direction of the first spraying pipe and supports the first spraying pipe, and one end of the pipeline fixing device is connected to the top of the gantry support. The first pulley assembly comprises a plurality of first rotating wheels distributed in the length direction of the pipeline fixing device, and the first pulley assembly is fixed to the pipeline fixing device. The beam body bearing table comprises a body used for containing the concrete precast beam, the body can move in the length direction of the first spraying pipe, and when the body moves to the bottom of the pipeline fixing device, the first pulley assembly abuts against the concrete precast beam. According to the concrete precast beam curing device, the precast beam can be uniformly cured, and personnel dependence is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a prefabricated concrete beam maintenance device. Background Art

[0002] Precast concrete beams and cast-in-place beams are two commonly used beam structures in the field of bridges and buildings. Cast-in-place beams refer to concrete beams made directly on the construction site. The construction workers first lap the formwork and tie the steel bars on site, and finally pour the concrete to form the beam body. Precast concrete beams refer to beam structures that are pre-processed and manufactured in a factory or a special precast concrete beam factory, and then transported to the construction site for installation by transportation equipment. Compared with cast-in-place beams, precast concrete beams, on the one hand, because precast concrete beams are customized in the factory, the production process can be strictly controlled in the factory environment, which reduces errors and problems on the construction site and improves the overall project quality. On the other hand, because precast concrete beams are pre-produced by the factory according to predetermined standards, they only need to be installed and connected on the construction site, which speeds up the construction progress and improves the construction efficiency. Therefore, precast concrete beams are widely used on current construction sites.

[0003] When the precast concrete beam is transported from the precast concrete beam production plant to the construction site through transportation equipment, due to changes in environmental factors such as temperature and humidity, the precast concrete beam needs to be water-cured to promote the cement hydration reaction to ensure that the concrete strength continues to increase. At the same time, during the hardening process of concrete, chemical changes will occur, resulting in a decrease in internal moisture. When the surface moisture of the concrete is lost too much, the shrinkage of the concrete surface increases. At this time, water curing of the precast concrete beam can prevent the surface of the precast concrete beam from cracking.

[0004] The existing concrete curing mostly adopts spraying with sprinkler pipes. The sprinkler pipes are erected on the upper part of the concrete precast beam, and water naturally flows onto the concrete precast beam by gravity to achieve curing.

[0005] In the existing maintenance method of precast concrete beams, when the length of the spray pipe is long, it is necessary to set multiple supporting points in the length direction of the spray pipe, which consumes a lot of materials and has a high cost. Summary of the invention

[0006] One object of the present invention is to solve the problem that the existing method for manually curing precast concrete beams has high requirements for operators and may cause uneven curing.

[0007] In particular, an embodiment of the present application provides a precast concrete beam curing device, comprising:

[0008] A first spray pipe is used to provide water for the maintenance of the precast concrete beams, and a plurality of first spray holes are provided in the length direction of the first spray pipe;

[0009] A pipe fixing device, extending along the length direction of the first spray pipe and used to support the first spray pipe, one end of the pipe fixing device is connected to the top of the gantry bracket;

[0010] A first pulley assembly includes a plurality of first rotating wheels, each of which is evenly distributed along the length direction of the pipeline fixing device and fixed on a side of the pipeline fixing device away from the first spray pipe; and

[0011] The beam bearing platform comprises a main body, the top of which is used to place a precast concrete beam. The main body can move along the length direction of the first spray pipe, and when the main body moves to the bottom of the pipe fixing device, the first pulley assembly abuts against the top of the precast concrete beam.

[0012] Furthermore, a cavity for placing a precast concrete beam is provided at the top of the main body, and a raised top foot piece is provided at the bottom of the cavity, and the top of the top foot piece is used to support the precast concrete beam so that there is a gap between the bottom of the precast concrete beam and the bottom surface of the cavity.

[0013] Furthermore, the side surface of the cavity is inclined and the cross section of the cavity is in a shape expanding from the bottom upward.

[0014] Furthermore, a first through hole is vertically penetrated at the bottom of the main body, a waterproof rubber strip is provided along the side wall of the first through hole, and a water plugging head engaged with the waterproof rubber strip is provided in the first through hole. When the water depth in the cavity reaches a preset value, the water plugging head falls from the first through hole under the action of water pressure.

[0015] Furthermore, the first rotating wheel is detachably connected to the pipeline fixing device and can be fixed at any position.

[0016] Furthermore, the pipeline fixing device is composed of a plurality of pipeline fixing parts connected end to end.

[0017] Furthermore, each of the pipe fixing parts is provided with wing plates on both sides in the width direction, and the wing plates are provided with connecting holes, and the connecting holes on the wing plates of two adjacent pipe fixing parts are aligned with each other so that the first connecting member passes through the two aligned connecting holes to fix the two adjacent pipe fixing parts.

[0018] Furthermore, the first connecting member is a bolt.

[0019] Furthermore, a second spray pipe extending from the first spray pipe is arranged on the gantry support, and a plurality of second spray holes are arranged along the length direction of the second spray pipe, and the second spray holes face the precast concrete beam.

[0020] Furthermore, the first spray hole and the second spray hole are provided with atomizing nozzles.

[0021] The beneficial effects of the present invention are:

[0022] 1. By passing the beam bearing platform of the bearing beam body under the first spray pipe, the water gushing out of the first spray pipe flows to the precast concrete beam under the action of gravity, so that the maintenance of the precast concrete beam is more uniform and the dependence on manual labor is reduced. At the same time, the first pulley assembly set on the pipeline fixing device is abutted against the precast beam to support the spray pipe, without setting too many support frames, reducing consumables and saving costs.

[0023] 2. A cavity is set on the main body, and the water gushing out of the first spray pipe falls into the cavity. By limiting the concrete precast beam in the cavity, the bottom of the concrete precast beam is maintained.

[0024] 3. A first through hole is provided at the bottom of the cavity, and a waterproof rubber strip is provided around the first through hole. The water plugging head is engaged with the waterproof rubber strip, and the water plugging head can fall from the first through hole when the water depth in the cavity reaches a preset value. This prevents the concrete precast beam from being immersed in the cavity for too long, which reduces the strength and durability of the concrete precast beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A side view of a precast concrete beam curing device according to an embodiment of the present invention;

[0026] Figure 2 It is a front view of a precast concrete beam curing device according to one embodiment of the present invention;

[0027] Figure 3 The present invention is a cross-sectional view of a waterproof rubber strip engaged with a water plugging head according to an embodiment of the present invention.

[0028] In the figure:

[0029] 100-concrete precast beam maintenance device; 1-first spray pipe; 2-pipe fixing device; 21-pipe fixing part; 3-first pulley assembly; 4-beam body bearing platform; 41-main body; 42-second pulley assembly; 5-gantry bracket; 6-concrete precast beam; 7-cavity; 8-top foot piece; 9-waterproof rubber strip; 10-water plugging head; 11-first through hole; 12-wing plate; 13-first connecting piece; 14-middle piece. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] like Figure 1As shown, the concrete precast beam curing device 100 of the present invention includes a first spray pipe 1, a pipe fixing device 2, a first pulley assembly 3 and a beam body bearing platform 4. The first spray pipe 1 is used to provide a water source for the curing of the concrete precast beam 6. A plurality of first spray holes are provided in the length direction of the first spray pipe 1. The pipe fixing device 2 extends along the length direction of the first spray pipe 1 and is used to support the first spray pipe 1. One end of the pipe fixing device 2 is connected to the top of a gantry bracket 5. When the concrete precast beam 6 is cured at the current construction site, in order to control the curing environment and improve the curing effect, the curing process is often carried out in a curing shed. In its embodiment, the pipe fixing device 2 can also be fixed on the bracket of the curing shed, and the fixing method can be in the form of binding with a strap. The first pulley assembly 3 includes a plurality of first rotating wheels, each of which is evenly distributed along the length direction of the pipe fixing device 2, and can be fixed at any position on the side of the pipe fixing device 2 away from the first spray pipe 1. The beam bearing platform 4 includes a body 41 and a second pulley assembly 42 arranged at a side of the body 41 away from the precast concrete beam 6 and evenly arranged along the length direction of the body 41. The second pulley assembly 42 includes a plurality of second rotating wheels. The top of the body 41 is used to place the precast concrete beam 6. The body 41 can move along the length direction of the first spray pipe 1, and when the body 41 moves to the bottom of the pipe fixing device 2, the first rotating wheel abuts against the top of the precast concrete beam 6.

[0034] When the concrete precast beam 6 is being maintained, the crane places the concrete precast beam 6 on the beam body bearing platform 4. Before the maintenance work is carried out, multiple beam body bearing platforms 4 can be connected in sequence along the length direction and connected to an external traction machine. Under the traction of the traction machine, the beam body bearing platform 4 passes through the bottom of the gantry bracket 5 in sequence. During the passing process, the length direction of the concrete precast beam 6 is always kept parallel to the length direction of the first spray pipe 1. When the external water source is turned on, water flows outward through the first spray hole and flows to the concrete precast beam 6, so that the concrete precast beam 6 is gradually infiltrated to achieve the purpose of maintenance. In order to ensure that the length direction of the first spray pipe 1 is always kept parallel to the length direction of the concrete precast beam 6 during the movement of the beam body bearing platform 4, in one embodiment, the first rotating wheel is a first directional wheel. At the same time, in order to ensure that the beam body bearing platform 4 can move in a straight line under the traction of the traction machine, the second rotating wheel is a second directional wheel.

[0035] In order to ensure that the precast concrete beam 6 can be fully infiltrated, a suitable pulling speed of the tractor can be selected according to the size of the precast concrete beam 6. When the volume of the precast concrete beam 6 is large, the pulling speed of the tractor is small to facilitate the full infiltration of the precast concrete beam 6; when the volume of the precast concrete beam 6 is small, a smaller pulling speed of the tractor can be selected to improve the maintenance efficiency.

[0036] Since the length direction of the precast concrete beam 6 is parallel to the length direction of the first spray pipe 1, when water gushes out from the first spray hole, it can ensure that each part of the precast concrete beam 6 along the length direction is fully infiltrated, avoiding the uneven curing situation that exists during manual pouring and curing. At the same time, by abutting the first pulley assembly 3 set on the pipeline fixing device 2 with the top of the precast concrete beam 6, there is no need to set too many support frames in the length direction of the first spray pipe 1, so that the first spray pipe 1 can be supported, consumables are reduced, and the cost of the precast concrete beam curing device 100 is reduced. At the same time, the first spray pipe 1 and the precast concrete beam 6 can always maintain the best spraying distance.

[0037] A cavity 7 for placing a concrete precast beam 6 is provided at the top of the body 41 of the concrete precast beam maintenance device 100 of the present invention, and a raised top foot piece 8 is provided on the bottom of the cavity 7. The top of the top foot piece 8 is used to support the concrete precast beam 6 so that there is a gap between the bottom of the concrete precast beam 6 and the bottom of the cavity 7. When the water in the first spray pipe 1 gushes out, it flows downward along the vertical side of the concrete precast beam 6 under the action of gravity. When the amount of water gushing out from the first spray pipe 1 is large, the bottom of the concrete precast beam 6 will be soaked by water. When the amount of water gushing out from the first spray pipe 1 is small, it is difficult for the bottom of the concrete precast beam 6 to be soaked. By setting the cavity 7 at the top of the body 41 and placing the concrete precast beam 6 in the cavity 7. When the water gushing out of the first spray pipe 1 flows downward, it will automatically flow into the cavity 7. Since the bottom surface of the concrete precast beam 6 is limited in the cavity 7, the bottom surface can be completely soaked by immersing in the cavity 7. At the same time, by arranging the top foot piece 8 at the bottom of the cavity 7, the gap between the bottom surface of the precast concrete beam 6 and the bottom surface of the cavity 7 is increased, so that water can more easily contact the bottom surface of the precast concrete beam 6, thereby improving the infiltration efficiency.

[0038] In one embodiment, the top foot piece 8 is in the shape of a long strip and is arranged on both sides of the bottom surface of the cavity 7 along the length direction. In another embodiment, the top foot piece 8 is arranged at the four corners of the bottom surface of the cavity 7, and the top foot piece 8 abuts against the four corners of the precast concrete beam 6. In other embodiments, the top foot piece 8 can also be evenly and discretely distributed on the bottom surface of the cavity 7. Other arrangements of the top foot piece 8 that can leave a gap between the bottom surface of the precast concrete beam 6 and the bottom surface of the cavity 7 all fall within the scope of protection of the present invention and will not be described in detail here.

[0039] In one embodiment, the opening of the cavity 7 is an expansion opening, and the maximum width of the expansion opening is greater than the width of the precast concrete beam 6. By providing the expansion opening, water flowing downward from the top of the precast concrete beam 6 can more easily enter the cavity 7, thereby improving the efficiency of curing the precast concrete beam 6.

[0040] When soaking and curing the bottom of the precast concrete beam 6, the soaking time should be strictly controlled. If the soaking time is too short, the precast concrete beam 6 may not be adequately cured. If the soaking time is too long, water will penetrate into the concrete, causing changes in the internal structure of the concrete, which will affect the strength and durability of the concrete. Figure 1 As shown, a first through hole 11 perpendicular to the direction of the precast concrete beam 6 is provided on the bottom surface of the cavity 7 of the precast concrete beam curing device 100. Figure 3 As shown, a waterproof rubber strip 9 is provided along the circumference of the first through hole 11, and a water plug 10 engaged with the waterproof rubber strip 9 is also provided in the first through hole 11. When the water depth in the cavity 7 reaches a preset value, the water plug 10 falls from the first through hole 11 under the action of water pressure to release the water in the cavity 7. By providing the waterproof rubber strip 9 and the water plug 10 engaged with each other, the problem of the bottom of the precast concrete beam 6 being immersed in water for a long time, which leads to a decrease in the strength and durability of the precast concrete beam 6, is effectively avoided.

[0041] like Figure 1 As shown, in one embodiment, the pipeline fixing device 2 is a channel steel, and the first spray pipe 1 is arranged in the groove of the channel steel. By selecting the channel steel as the pipeline fixing device 2, it is more convenient to obtain materials. At the same time, the first spray pipe 1 is arranged in the groove of the channel steel, which can fix the first spray pipe 1 and also make it more convenient to remove and install the first spray pipe 1 from the pipeline fixing device 2.

[0042] In addition, when the length of the pipe fixture 2 is long, in order to better support the pipe fixture 2 and prevent the pipe fixture 2 from bending due to gravity, more first rotating wheels need to be set. When the length of the pipe fixture 2 is short, it is less likely to bend and deform due to gravity, and the number of first rotating wheels can be reduced accordingly. Therefore, the first rotating wheel in the concrete precast beam maintenance device 100 of the present invention is set to be detachably connected to the pipe fixture 2, and can fix the pipe fixture 2 at any position away from the first spray pipe 1. Figure 1 and Figure 2 As shown, in one embodiment, the first rotating wheel is connected to the pipe fixing device 2 through the middle piece 14. The middle piece 14 is provided with a second through hole perpendicular to the length direction of the pipe fixing device 2, the first connecting rod is inserted into the second through hole, and the two ends of the first connecting rod are used to connect the first rotating wheel. A strip through groove is provided in the length direction of the pipe fixing device 2, and a bolt passes through the strip through groove and is connected to a third through hole preset on the connecting member. In another embodiment, a plurality of fourth through holes are evenly provided in the length direction of the pipe fixing device 2 and penetrate the width direction of the pipe fixing device 2. The second connecting rod is inserted into the fourth through hole, and the two ends of the second connecting rod are used to connect the first rotating wheel.

[0043] like Figure 2As shown, the pipe fixing device 2 is composed of a plurality of pipe fixing parts 21 connected end to end. When there are a large number of precast concrete beams 6 to be cured and the curing space is relatively wide, a plurality of pipe fixing parts 21 can be connected end to end. By increasing the number of pipe fixing parts 21 to increase the length of the pipe fixing device 2, and adopting a longer first spray pipe 1, it is possible to cure a plurality of precast concrete beams 6 at the same time. When there are a small number of precast concrete beams 6 to be cured or there is insufficient curing space, the number of pipe fixing parts 21 can be reduced and the length of the pipe fixing device 2 can be shortened. By configuring the pipe fixing device 2 to be composed of a plurality of pipe fixing parts 21 spliced ​​together, the length of the pipe fixing device 2 can be adjusted according to different curing environments and curing requirements, so that the use of the precast beam curing device of the present invention is more flexible and diverse.

[0044] In the connection mode of the pipe fixing device 2, wing plates 12 symmetrically distributed along the length direction of the pipe fixing part 21 are provided at both ends in the width direction of each pipe fixing part 21, and connecting holes are provided on the wing plates 12. After two adjacent pipe fixing parts 21 are connected end to end, the connecting holes on the wing plates 12 correspond to each other, and the first connecting member 13 passes through the two corresponding connecting holes to fix the pipe fixing part 21. In one embodiment, the first connecting member 13 is a bolt. In another embodiment, the first connecting member 13 is a self-locking nylon tie. Other types of locking members that can achieve the same effect belong to the protection scope of the present invention and will not be repeated here.

[0045] The number of gantry brackets 5 can be multiple and evenly arranged along the length direction of the pipeline fixing device 2. By providing multiple gantry brackets 5, multiple fixing points can be added in the length direction of the pipeline fixing device 2, thereby improving the overall stability of the precast concrete curing device.

[0046] In addition, due to the particularity of the structure of some precast concrete beams 6, when the first spray pipe 1 is set on the top of the precast concrete beam 6, it is difficult to maintain the vertical side wall of the precast concrete beam 6 simply by relying on water flowing under gravity. Therefore, a second spray pipe is led out from the first spray pipe 1, and the second spray pipe can be fixed on the gantry bracket 5 by a self-locking nylon tie. The second spray pipe is provided with a second spray hole, and the second spray hole faces the precast concrete beam 6. When water is filled into the first spray pipe 1, water flows from the first spray pipe 1 to the second spray pipe, and sprays the side wall of the precast concrete beam 6 through the second spray hole, so as to achieve the maintenance of the precast concrete beam 6 without dead angles. Furthermore, atomizing nozzles are provided on the first spray hole and the second spray hole. By providing the atomizing nozzle, the water sprayed from the first spray hole and the second spray hole is atomized, so that the water can be sprayed on the precast concrete beam 6 more evenly.

[0047] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A precast concrete beam curing device, characterized in that: include: A first spray pipe is used to provide water for curing the precast concrete beams, and a plurality of first spray holes are provided along the length direction of the first spray pipe; A pipe fixing device, extending along the length direction of the first spray pipe and used to support the first spray pipe, one end of the pipe fixing device is connected to the top of the gantry bracket; A first pulley assembly includes a plurality of first rotating wheels, each of which is evenly distributed along the length direction of the pipeline fixing device and fixed on a side of the pipeline fixing device away from the first spray pipe; and The beam bearing platform comprises a main body, the top of which is used to place a precast concrete beam. The main body can move along the length direction of the first spray pipe, and when the main body moves to the bottom of the pipe fixing device, the first pulley assembly abuts against the top of the precast concrete beam.

2. The precast concrete beam curing device according to claim 1, characterized in that: A cavity for placing a precast concrete beam is provided at the top of the main body, a raised top foot piece is provided at the bottom of the cavity, and the top of the top foot piece is used to support the precast concrete beam so that a gap exists between the bottom of the precast concrete beam and the bottom surface of the cavity.

3. The precast concrete beam curing device according to claim 2, characterized in that: The side surface of the cavity is inclined and the cross section of the cavity is in a shape expanding from the bottom upward.

4. The precast concrete beam curing device according to claim 2, characterized in that: A first through hole is vertically penetrated at the bottom of the main body, a waterproof rubber strip is provided along the side wall of the first through hole, and a water plugging head engaged with the waterproof rubber strip is provided in the first through hole. When the water depth in the cavity reaches a preset value, the water plugging head falls from the first through hole under the action of water pressure.

5. The precast concrete beam curing device according to claim 1, characterized in that: The first rotating wheel is detachably connected to the pipeline fixing device and can be fixed at any position.

6. The precast concrete beam curing device according to claim 5, characterized in that: The pipeline fixing device is composed of a plurality of pipeline fixing parts connected end to end.

7. The precast concrete beam curing device according to claim 6, characterized in that: Each of the pipe fixing parts is provided with wing plates on both sides in the width direction, and the wing plates are provided with connecting holes. The connecting holes on the wing plates of two adjacent pipe fixing parts are aligned with each other so that the first connecting member passes through the two aligned connecting holes to fix the two adjacent pipe fixing parts.

8. The precast concrete beam curing device according to claim 7, characterized in that: The first connecting member is a bolt.

9. The precast concrete beam curing device according to claim 1, characterized in that: The gantry support is provided with a second spray pipe extending from the first spray pipe, and a plurality of second spray holes are provided along the length direction of the second spray pipe, and the second spray holes face the precast concrete beam.

10. The precast concrete beam curing device according to claim 9, characterized in that: The first spray hole and the second spray hole are provided with atomizing nozzles.

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