Spraying structure for spraying precast beam

Abstract

The utility model provides a spraying structure for spraying a precast beam, the spraying structure is arranged in an accommodating cavity of a placing table, and the placing table is used for placing the precast beam; the spraying structure comprises a water supply pipeline and a telescopic structure; the water supply pipeline is arranged in a containing cavity; the telescopic structure is arranged on the side, close to the containing table and used for communicating with the opening position of the containing cavity, of the water supply pipeline. When the telescopic structure is in the first contraction state, a water outlet pipeline composed of a water supply pipeline and a water passing pipeline formed in the telescopic structure is communicated, and the telescopic structure is driven to execute the spraying action; when the telescopic structure is converted from the first contraction state to the natural state, the telescopic structure is located at the retreating position relative to the water supply pipeline so that the water outlet pipeline can be closed. The spraying device can automatically extend out of the placing table to spray when being subjected to water pressure and automatically retract when being free of water pressure, so that the spraying structure is effectively protected, and the space is saved.

Description

Technical Field

[0001] This utility model relates to the technical field of spray curing equipment, and in particular to a spray structure for spraying precast beams. Background Technology

[0002] During bridge construction, the curing of precast beams is a crucial step in ensuring beam quality. In this process, spray curing devices are commonly used to spray the precast beams. Traditional spray curing devices need to be installed on the outer side of the web and top slab of the precast beam to achieve multi-directional spraying.

[0003] However, there is at least one problem with the relevant technology: the existing spraying equipment is mainly set in the middle of adjacent pedestals. During construction, foreign objects such as mortar can easily drip onto the spraying equipment, causing the equipment to become dirty or even clog the spray heads, and thus failing to effectively protect the spraying equipment. Summary of the Invention

[0004] The purpose of this utility model is to provide a spraying structure for spraying precast beams, which can prevent foreign objects such as mortar from dripping onto the spraying equipment during construction, causing the equipment to become dirty or even clog the spraying heads, and effectively protect the spraying equipment.

[0005] The purpose of this utility model is achieved as follows:

[0006] A spraying structure for spraying precast beams is characterized in that: the spraying structure is disposed within a receiving cavity of a placement platform, and the placement platform is used to place the precast beams; the spraying structure includes: a water supply pipe disposed within the receiving cavity; and a telescopic structure disposed on the side of the water supply pipe near the opening of the placement platform for connecting to the receiving cavity; wherein, when the telescopic structure is in a first retracted state, a water outlet pipe composed of the water supply pipe and a water passage pipe formed inside the telescopic structure is connected, driving the telescopic structure to perform a spraying action; when the telescopic structure changes from the first retracted state to a free state, the telescopic structure is in a retracted position relative to the water supply pipe, so that the water outlet pipe is closed.

[0007] Compared to existing technologies, the telescopic structure allows the spray structure to remain in its natural state when not in use, hidden inside the housing of the placement platform, effectively protecting the spray structure. When subjected to water pressure, the telescopic structure extends out of the housing.

[0008] In one embodiment of this utility model, the telescopic structure includes: an outer sleeve, a telescopic tube, and a return spring; the telescopic tube is sleeved inside the outer sleeve, and the telescopic tube and the outer sleeve are movably fitted together; the return spring is disposed inside the outer sleeve and sandwiched between the telescopic tube and the outer sleeve, so as to apply an elastic force to the telescopic tube to bring the telescopic tube closer to the water supply pipe.

[0009] Compared with existing technologies, the telescopic tube is sleeved inside the outer tube, and a return spring is sandwiched between the telescopic tube and the outer tube. This design is simple and easy to manufacture.

[0010] In one embodiment of this utility model, a first limiting ring is provided at the end of the outer sleeve away from the water supply pipe, and a second limiting ring is provided at the end of the telescopic tube close to the water supply pipe for limiting and cooperating with the first limiting ring to prevent the telescopic tube from coming out of the outer sleeve; a return spring is sandwiched between the first limiting ring and the second limiting ring; wherein, when the telescopic structure performs the spraying action, the return spring is subjected to the squeezing force applied to the return spring by the first limiting ring and the second limiting ring approaching each other, so that the return spring enters the first contracted state;

[0011] When the telescopic structure stops spraying, the return spring is no longer subjected to the squeezing force exerted on it by the first and second limiting rings approaching each other, and the return spring naturally retracts, allowing the telescopic structure to return to its natural state.

[0012] Compared with the existing technology, the telescopic tube and the outer tube are connected together by the cooperation of the first limiting ring, the return spring and the second limiting ring, and can switch between the first retracted state and the natural state.

[0013] In one embodiment of this utility model, an inlet hole is provided on the outer sleeve near the water supply pipe; a first water channel and a second water channel are provided on the telescopic pipe, the first water channel is at the end of the telescopic pipe near the inlet hole, and an outlet hole is also provided on the telescopic pipe for the first water channel and the second water channel to communicate; wherein, when the telescopic structure is in the first telescopic state, the water flows sequentially through the water supply pipe, the inlet hole, the first water channel, the outlet hole and the second water channel to form the outlet pipe.

[0014] Compared with existing technologies, a multi-section water outlet pipe is constructed by setting up a water supply pipe, an inlet, a first water channel, an outlet, and a second water channel. This design is simple and easy to manufacture.

[0015] In one embodiment of this utility model, a water-sealing column is provided inside the outer sleeve, and the water-sealing column is nested inside the telescopic tube; when the telescopic structure is in its natural state, the water-sealing column covers the water outlet; wherein, when the telescopic structure is in the first telescopic state, the telescopic tube is away from the water inlet, and the water-sealing column does not completely cover the water outlet.

[0016] Compared with existing technologies, the combination of the sealing water column and the water outlet hole sets a critical value for the telescopic structure between the first contracted state and the natural state.

[0017] In one embodiment of this utility model, the telescopic structure further includes a rotating nozzle, which is connected to the end of the telescopic pipe away from the water supply pipe; wherein, when the telescopic structure is in the first telescopic state, the water outlet pipe drives the rotating nozzle to perform a spraying action.

[0018] Compared with existing technologies, the rotating nozzle configuration allows for a wider spray range when the spray structure performs the spraying action.

[0019] In one embodiment of this utility model, the telescopic structure also includes a control unit, which is located inside the telescopic tube at the end away from the water supply pipe.

[0020] In one embodiment of this utility model, a driven gear is provided on the rotating nozzle, and the driven gear is located at the bottom of the rotating nozzle.

[0021] In one embodiment of this utility model, the control unit is provided with a drive gear, and the control unit controls the rotation of the drive gear; wherein the drive gear is meshed with the driven gear.

[0022] Compared with existing technologies, the rotation of the spray head is controlled by a control unit through the cooperation of the driving gear and the driven gear, making the spraying methods more diverse.

[0023] In one embodiment of this utility model, a cavity is provided at the end of the telescopic tube away from the water inlet; wherein, the cavity accommodates the control unit.

[0024] Compared with existing technologies, placing the control unit and driven gear inside the cavity can protect the control unit from damage caused by external conditions.

[0025] By adopting the technical solution of this utility model, the following technical effects can be achieved:

[0026] (1) When not in use, the spray structure is hidden inside the receiving cavity of the placement platform, protecting itself and saving space;

[0027] (2) When the spray structure is subjected to a certain water pressure, it extends out of the receiving cavity of the placement platform, and no manual operation is required when using the spray structure;

[0028] (3) By setting the rotating nozzle, the spraying range of the spraying structure when performing the spraying action is wider. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure when the precast beam is placed on the placement platform in an embodiment of this utility model;

[0030] Figure 2 for Figure 1 A schematic diagram of the telescopic structure in its natural state;

[0031] Figure 3 for Figure 1 A schematic diagram of the telescopic structure in its first contracted state;

[0032] Figure 4 for Figure 3Sectional view of AA;

[0033] Figure 5 for Figure 1 A top-view schematic diagram of the telescopic structure.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Spray structure; 20. Placement platform; 30. Receiving cavity; 40. Precast beam; 100. Water supply pipe; 200. Telescopic structure; 210. Outer sleeve; 211. Water inlet; 212. Water sealing column; 213. First limiting ring; 220. Telescopic pipe; 221. First water channel; 222. Second water channel; 223. Water outlet; 224. Cavity; 225. Second limiting ring; 230. Return spring; 240. Rotating nozzle; 241. Driven gear; 242. Horizontal rotating pipe; 243. Vertical spray pipe; 244. Driven gear protrusion; 250. Control unit; 251. Driving gear. Detailed Implementation

[0036] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0037] See Figure 1 A spraying structure for spraying precast beams includes a placement platform 20 below the precast beam 40, a receiving cavity 30 with an opening to the side wall inside the placement platform 20, and a spraying structure 10 inside the receiving cavity 30. The precast beam 40 above is sprayed by the spraying structure 10 located below.

[0038] See Figure 1 , Figure 2 and Figure 3 The spray structure 10 includes a water supply pipe 100 and a telescopic structure 200. The water supply pipe 100 is disposed inside the receiving cavity 30, and the telescopic structure 200 is disposed on the side of the water supply pipe 100 near the opening of the placement platform 20 that connects to the receiving cavity 30. By disposing of the water supply pipe 100 and the telescopic structure 200 inside the receiving cavity 30, the spray structure 10 can be concealed within the receiving cavity 30 of the placement platform 20. When the telescopic structure 200 is in its first retracted state, the water outlet pipe, composed of the water supply pipe 100 and a water passage pipe formed inside the telescopic structure 200, is connected. Simultaneously, the telescopic structure 200 extends out of the receiving cavity 30 of the placement platform 20 to spray the precast beam 40. When the telescopic structure 200 changes from its first retracted state to its open state, the telescopic structure 200 is in a retracted position relative to the water supply pipe 100, thereby closing the water outlet pipe. At this time, the telescopic structure 200 returns to the receiving cavity 30 and is protected by the placement platform 20.

[0039] For example, the water supply pipe 100 of the spray structure 10 is a branch pipe of the water source, which enables multiple spray structures 10 to perform spraying actions at the same time, so that the spray structure 10 sprays the precast beam 40 over a large area in real time during spraying.

[0040] See again Figure 2 and Figure 3 The telescopic structure 200 includes an outer sleeve 210, a telescopic tube 220, and a return spring 230. The telescopic tube 220 is sleeved from one end of the outer sleeve 210 into the outer sleeve 210, and the telescopic tube 220 and the outer sleeve 210 are movably fitted together. The return spring 230 is located inside the outer sleeve 210 and is sandwiched between the outer wall of the telescopic tube 220 and the inner wall of the outer sleeve 210 to apply an elastic force to the telescopic tube 220, causing the telescopic tube 220 to move closer to the water supply pipe 100.

[0041] Preferably, the materials of the telescopic tube 220 and the outer tube 210 should be waterproof, and when the outer tube 210 and the telescopic tube 220 are slidably connected, they should be airtight to prevent water leakage.

[0042] A first limiting ring 213 is provided at the end of the outer sleeve 210 away from the water supply pipe 100, and a second limiting ring 225 is provided at the end of the telescopic pipe 220 near the water supply pipe 100 to limit the telescopic pipe 220 from coming out of the outer sleeve 210; a return spring 230 is sandwiched between the first limiting ring 213 and the second limiting ring 225; wherein, when the telescopic structure 200 performs the spraying action, the return spring 230 is subjected to the squeezing force exerted on the return spring 230 by the first limiting ring 213 and the second limiting ring 225 approaching each other, so that the return spring 230 enters the first contracted state; when the telescopic structure 200 no longer performs the spraying action, the return spring 230 is no longer subjected to the squeezing force exerted on the return spring 230 by the first limiting ring 213 and the second limiting ring 225 approaching each other, the return spring 230 naturally retracts, and the telescopic structure 200 enters the natural state.

[0043] For example, the first limiting ring 213 and the second limiting ring 225 are provided with grooves in their respective directions for cooperating with the return spring 230, so as to facilitate the installation of the return spring 230 sandwiched between the first limiting ring 213 and the second limiting ring 225.

[0044] An inlet hole 211 is provided on the outer sleeve 210 near the end of the water supply pipe 100; a first water channel 221 and a second water channel 222 are provided on the telescopic pipe 220. The first water channel 221 is located at the end of the telescopic pipe 220 near the inlet hole 211, and an outlet hole 223 is provided on the middle side wall of the telescopic pipe 220 to connect the first water channel 221 and the second water channel 222. When the telescopic structure 200 is in the first telescopic state, the water flows sequentially through the water supply pipe 100, the inlet hole 211, the first water channel 221, the outlet hole 223, and the second water channel 222 to form the outlet pipe.

[0045] The second waterway 222 is configured as a cylindrical groove, and the first waterway 221 is configured as an annular groove surrounding the second waterway 222. This design improves space utilization and facilitates the cooperation between the first waterway 221 and the second waterway 222.

[0046] The outer sleeve 210 has a water-sealing column 212 inside. The cross-section of the water-sealing column 212 is "T" shaped. The end of the water-sealing column 212 closest to the water supply pipe 100 is fixedly connected inside the outer sleeve 210, and the plane of the end of the water-sealing column 212 closest to the water supply pipe 100 is flush with the plane of the end of the outer sleeve 210 facing the water supply pipe 100. The end of the water-sealing column 212 furthest from the water supply pipe 100 is nested inside the telescopic pipe 220. The column of the water-sealing column 212 should be set as a cylinder with the same shape as the second water channel 222 to ensure that when the telescopic structure 200 is in its natural state, the water-sealing column 212 covers the water outlet 223, so that the first water channel 221 and the second water channel 222 cannot be connected. When the first waterway 221 is subjected to pressure from the water supply pipe 100, the telescopic pipe 220 begins to move away from the outer sleeve 210 towards the opening of the receiving cavity 30 until the telescopic structure 200 is in the first telescopic state, the sealing column 212 does not completely cover the water outlet 223, and the water outlet pipe is connected.

[0047] The telescopic structure 200 also includes a rotating nozzle 240, which is connected to the end of the telescopic pipe 220 away from the water supply pipe 100. When the telescopic structure 200 is in the first telescopic state, the water outlet pipe drives the rotating nozzle 240 to perform a spraying action.

[0048] The rotary nozzle 240 is detachably mounted on the telescopic pipe 220, and the spray holes of the rotary nozzle 240 can be set arbitrarily to meet different spraying needs.

[0049] See Figure 3 and Figure 4 A control unit 250 is provided within the telescopic structure 200. The control unit 250 is located at the end of the telescopic pipe 220 away from the water supply pipe 100. The control unit 250 may optionally be a small control unit capable of achieving, for example, rotation or slow reciprocating rotation.

[0050] The rotary nozzle 240 has a T-shaped cross-section. A driven gear 241 is fitted on the outer wall of the horizontal rotating tube 242 of the rotary nozzle 240. The water passages in the horizontal rotating tube 242 and the vertical nozzle 243 are connected to the second water channel 222 of the telescopic tube 220, and the end face of the vertical nozzle 243 can contact the end face of the sealing column 212 away from the water supply pipe 100. A drive gear 251 is provided on the output shaft of the control unit 250, and the control unit 250 controls the rotation of the drive gear 251. The drive gear 251 is meshed with the driven gear 241. By controlling the rotation of the drive gear 251 through the control unit 250, and through the meshing of the drive gear 251 and the driven gear 241, the control unit 250 controls the rotation of the rotary nozzle 240.

[0051] Preferably, the inner ring of the driven gear 241 has a driven gear protrusion 244, and the outer wall of the transverse rotating tube 242 on the rotating nozzle 240 and the position where the driven gear 241 is installed are provided with a driven gear groove that cooperates with the driven gear protrusion 244. The driven gear protrusion 244 is embedded in the driven gear groove to ensure that the driven gear 241 will not slip when driving the rotating nozzle 240.

[0052] A cavity 224 is provided at the end of the telescopic tube 220 away from the water inlet 211, and the driving gear 251, the driven gear 241, and the control unit 250 are all located in the cavity 224. The cavity 224 has sufficient sealing to prevent the control unit 250 from getting wet.

[0053] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A spraying structure for spraying precast beams, characterized in that: The spray structure is disposed within the receiving cavity (30) of the placement platform (20), and the placement platform (20) is used to place the precast beam (40); the spray structure includes: A water supply pipe (100) is provided inside the receiving cavity (30); Telescopic structure (200) is provided on the side of the water supply pipe (100) near the opening of the placement platform (20) for connecting the receiving cavity (30).

2. The spraying structure for spraying precast beams according to claim 1, characterized in that: The telescopic structure (200) includes: an outer sleeve (210), a telescopic tube (220), and a return spring (230); The telescopic tube (220) is fitted inside the outer tube (210), and the telescopic tube (220) and the outer tube (210) are movably fitted together; The return spring (230) is located inside the outer sleeve (210) and sandwiched between the telescopic tube (220) and the outer sleeve (210) to apply an elastic force to the telescopic tube (220) to bring it closer to the water supply pipe (100).

3. The spraying structure for spraying precast beams according to claim 2, characterized in that: The outer sleeve (210) is provided with a first limiting ring (213) at the end away from the water supply pipe (100), and the telescopic pipe (220) is provided with a second limiting ring (225) at the end close to the water supply pipe (100) for limiting and cooperating with the first limiting ring (213) to restrict the telescopic pipe (220) from coming out of the outer sleeve (210); The reset spring (230) is sandwiched between the first limiting ring (213) and the second limiting ring (225).

4. The spraying structure for spraying precast beams according to claim 2, characterized in that: The outer sleeve (210) is provided with a water inlet (211) at one end near the water supply pipe (100); The telescopic pipe (220) is provided with a first water channel (221) and a second water channel (222). The first water channel (221) is located at one end of the telescopic pipe (220) near the water inlet (211). The telescopic pipe (220) is also provided with a water outlet (223) for communicating with the first water channel (221).

5. The spraying structure for spraying precast beams according to claim 4, characterized in that: The outer sleeve (210) is provided with a water sealing column (212) inside, and the water sealing column (212) is nested and connected inside the telescopic pipe (220).

6. The spraying structure for spraying precast beams according to claim 5, characterized in that: The telescopic structure (200) also includes a rotating nozzle (240) connected to the end of the telescopic pipe (220) away from the water supply pipe (100).

7. The spraying structure for spraying precast beams according to claim 6, characterized in that: The telescopic structure (200) also includes a control unit (250), which is located at one end of the telescopic pipe (220) away from the water supply pipe (100).

8. The spraying structure for spraying precast beams according to claim 7, characterized in that: The rotary nozzle (240) is provided with a driven gear (241), which is located at the bottom of the rotary nozzle (240).

9. The spraying structure for spraying precast beams according to claim 8, characterized in that: The control unit (250) is provided with a drive gear (251), and the control unit (250) controls the drive gear (251) to rotate; The driving gear (251) is meshed with the driven gear (241).

10. The spraying structure for spraying precast beams according to claim 9, characterized in that: A cavity (224) is provided at one end of the telescopic tube (220) away from the water inlet (211); The cavity (224) houses the control unit (250).

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