A grouting device for bridge construction

Abstract

This utility model discloses a grouting device for bridge construction, relating to the technical field of bridge construction equipment. The device includes a grout tank, a mixing mechanism, a conveying mechanism, and a connecting mechanism. The mixing mechanism includes a rotating shaft and a sleeve shaft driven by a gear transmission mechanism, capable of rotating in opposite directions. A first mixing blade and a second mixing blade are respectively fixed on the rotating shaft and the sleeve shaft. The connecting mechanism includes a connector with a groove, a feeding head with a through hole, and a sliding tube slidably disposed outside the feeding head. The sliding tube controls the engagement or disengagement of the ball bearings within the through hole with the groove of the connector, achieving rapid connection. This utility model improves the uniformity of grout mixing through its reverse mixing structure, effectively preventing sedimentation and blockage. Simultaneously, its rapid connection mechanism enables tool-free quick assembly and disassembly of the grouting pipe, greatly simplifying the maintenance process and significantly improving construction efficiency and grouting quality.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction equipment technology, and in particular to a grouting device for bridge construction. Background Technology

[0002] In modern bridge engineering, especially in the construction of prestressed concrete beams, grouting of the ducts is a crucial process. Its purpose is to inject specially formulated cement grout into the prestressing tendon ducts to densely fill the voids within, effectively protecting the prestressed steel bars from corrosion and ensuring the bond between the prestressed tendons and the concrete structure, thus enabling them to share the load.

[0003] To accomplish this process, various grouting devices are commonly used on construction sites. Traditional grouting devices typically consist of a mixing tank and a pumping system, which can mix raw materials such as cement, water, and admixtures into a grout and then transport it through pipelines to the grouting ducts.

[0004] However, in practical applications, the mixing mechanisms of existing grouting devices often have a relatively simple structure, such as using a single layer or co-rotating mixing blades. This type of mixing method generates limited shear force and eddy current effects. For grouts requiring high uniformity and high fluidity in bridge engineering, this mixing method easily leads to insufficient mixing, resulting in the agglomeration of fine cement particles in the grout, or settling during brief downtime. This not only directly affects the final grouting quality and strength, but the settled particles can also easily cause blockages in subsequent pumping pipelines.

[0005] In the event of blockages or the need to remove unexpected impurities from the grout, workers must shut down the equipment for maintenance, particularly disassembling the filter screen and grouting pipe connected to the pump outlet. Existing equipment typically uses traditional methods such as threads or flanges for these connections; disassembly and installation require specialized tools like wrenches and are cumbersome and time-consuming. In construction environments where the grout solidifies easily, this slow maintenance method severely impacts the continuity of construction and reduces overall work efficiency. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a grouting device for bridge construction, aiming to improve the problems of low efficiency of the mixing mechanism leading to uneven grout mixing, easy settling and pipe blockage, and complex structure of the connection between the filter screen and the grouting pipe, which makes disassembly and maintenance extremely inconvenient. This utility model aims to provide a grouting device for bridge construction with an improved structure that can effectively solve the above problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a grouting device for bridge construction, comprising: a grout tank, a stirring mechanism disposed within the grout tank, a conveying mechanism connected to the outlet of the grout tank, and a connecting mechanism connected to the conveying mechanism.

[0008] The stirring mechanism includes a rotating shaft and a sleeve shaft sleeved outside the rotating shaft. A first stirring blade and a first geared disc are fixedly connected to the rotating shaft, and a second stirring blade and a second geared disc are fixedly connected to the sleeve shaft. The first geared disc, the gear, and the second geared disc are connected by meshing.

[0009] Furthermore, the connecting mechanism includes a connector and a slide tube slidably sleeved outside the feeding head of the conveying mechanism. The connector can be inserted into the feeding head. A slot is provided on the outer wall of the connector. A through hole is provided on the tube wall of the feeding head. An exit groove is provided on the inner wall of the slide tube. A ball is provided in the through hole. In the locked state, the ball is radially constrained by the inner wall of the slide tube, so that part of the ball extends out of the through hole and is engaged in the slot.

[0010] Preferably, a scraper is fixedly connected to the bottom of the first stirring blade, and the outline of the scraper is adapted to the shape of the bottom of the slurry tank.

[0011] Preferably, the connecting mechanism further includes a fixing ring and a spring, the spring being sleeved on the outer periphery of the connector and elastically abutting between the fixing ring and the slide tube.

[0012] Preferably, the connecting mechanism is provided with a filter screen, which is clamped between the end of the feeding head and the end of the connecting head.

[0013] Preferably, the stirring mechanism further includes a first motor, the output shaft of which is fixedly connected to the rotating shaft.

[0014] Preferably, the stirring mechanism further includes a housing, the first motor is mounted on the top of the housing, and the housing is fixed to the top of the slurry tank.

[0015] Preferably, the conveying mechanism includes a feeding pipe, a second motor, and a spiral blade, wherein the spiral blade is rotatably connected inside the feeding pipe and is driven by the second motor.

[0016] Preferably, it also includes an equipment frame and a bracket, with the slurry tank fixed to the equipment frame via the bracket.

[0017] Preferably, the slurry tank includes a tank body, with an inlet at the top of the tank body and an outlet connected to the bottom of the tank body.

[0018] This utility model has the following beneficial effects: In this invention, by setting a first stirring blade and a second stirring blade that rotate in opposite directions, and by setting a scraper at the bottom of the first stirring blade, the problems of insufficient mixing leading to slurry agglomeration, uneven mixing, and particle settling and pipe blockage in the prior art are solved. This achieves the technical effect of improving the uniformity of slurry mixing, ensuring grouting quality, and preventing equipment blockage from the source.

[0019] This utility model solves the problems of cumbersome and time-consuming disassembly and assembly of the filter screen and grouting pipe connection, which affect construction efficiency, by designing a quick connection mechanism that can control the engagement or disassembly of the ball and the slot through a sliding tube. It achieves the technical effects of tool-free quick disassembly and assembly, shortening equipment maintenance time, and improving construction continuity. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a grouting device for bridge construction proposed in this utility model; Figure 2 This is a schematic diagram of the tank body structure of a grouting device for bridge construction proposed in this utility model; Figure 3 This is a schematic diagram of the second mixing blade of a grouting device for bridge construction proposed in this utility model. Figure 4 This is a schematic diagram of the feeding pipe section of a grouting device for bridge construction proposed in this utility model. Figure 5 This is a schematic diagram of the connector part of a grouting device for bridge construction proposed in this utility model.

[0021] Legend: 1. Equipment frame; 2. Support; 3. Slurry tank; 301. Tank body; 302. Inlet; 303. Outlet; 4. Mixing mechanism; 401. First motor; 402. Outer shell; 403. Rotating shaft; 404. First gear disc; 405. Gear; 406. Second gear disc; 407. Sleeve shaft; 408. First mixing blade; 409. Second mixing blade; 410. Scraper; 5. Conveying mechanism; 501. Feeding pipe; 502. Second motor; 503. Spiral blade; 504. Feeding head; 6. Connecting mechanism; 601. Connector; 602. Fixing ring; 603. Spring; 604. Slide tube; 605. Exit groove; 606. Through hole; 607. Ball bearing; 608. Slot; 7. Grouting pipe; 8. Filter screen. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 5 This utility model provides a grouting device for bridge construction, which aims to solve the technical problems of uneven mixing in existing grouting devices, which easily leads to grout settling and blockage, and the difficulty in disassembling and maintaining the connection between the filter screen and the grouting pipe.

[0024] like Figure 1 As shown, a grouting device for bridge construction includes an equipment frame 1, a support 2 fixedly connected to the equipment frame 1, and a grout tank 3 fixedly connected to the support 2; a mixing mechanism 4 is installed inside the grout tank 3, a conveying mechanism 5 is connected to the bottom of the grout tank 3, a connecting mechanism 6 is connected to the end of the conveying mechanism 5, and the end of the connecting mechanism 6 is used to connect a grouting pipe 7; see reference. Figure 2 The slurry tank 3 includes a tank body 301, with a feed inlet 302 at the top of the tank body 301 and a discharge outlet 303 at the bottom of the tank body 301, which is connected to the conveying mechanism 5.

[0025] Reference Figure 2 and Figure 3 A stirring mechanism 4 is disposed inside the slurry tank 3 for efficient mixing of the slurry. The stirring mechanism 4 includes a housing 402 fixed to the top of the slurry tank 3, a first motor 401 mounted on the top of the housing 402, the output shaft of the first motor 401 extending downward and fixedly connected to a rotating shaft 403, and a sleeve shaft 407 that can rotate relative to the rotating shaft 403. A first geared disc 404 and a first stirring blade 408 are fixedly connected to the rotating shaft 403, and a second geared disc 406 and a second stirring blade 409 are fixedly connected to the sleeve shaft 407. The first geared disc 404 and the second geared disc 406 are connected by meshing gears 4. 05 A transmission connection is formed. When the first motor 401 drives the rotating shaft 403 to rotate, the rotating shaft 403 drives the first gear disk 404 to rotate synchronously. The first gear disk 404 drives the second gear disk 406 to rotate in the opposite direction through the gear 405, which in turn drives the sleeve shaft 407 to rotate in the opposite direction with the rotating shaft 403, and finally realizes the relative opposite rotation and stirring of the first stirring blade 408 and the second stirring blade 409. In order to prevent the slurry from settling, a scraper 410 is also fixedly connected to the bottom of the first stirring blade 408. The outline of the scraper 410 is adapted to the shape of the inner wall of the bottom of the slurry tank 3, and can scrape the bottom of the tank when the first stirring blade 408 rotates.

[0026] like Figure 1 and Figure 4As shown, the uniformly stirred slurry enters the conveying mechanism 5 from the outlet 303 of the slurry tank 3. The conveying mechanism 5 includes a feeding pipe 501, the inlet end of which is connected to the outlet 303, and the outlet end of which forms a feeding head 504. A second motor 502 is fixedly connected to the outside of the feeding pipe 501. The output shaft of the second motor 502 extends into the feeding pipe 501 and is fixedly connected to a spiral blade 503. The spiral blade 503 is rotatably connected inside the feeding pipe 501 and is driven to rotate by the second motor 502, thereby stably pushing the slurry from the inlet end of the feeding pipe 501 to the feeding head 504. To ensure the purity of the slurry, a filter screen 8 is also provided between the conveying mechanism 5 and the connecting mechanism 6. Please refer to... Figure 5 The filter screen 8 is a ring-shaped filter screen. In the assembled state, the filter screen 8 is clamped between the end of the feed head 504 and the end of the connector 601 of the connecting mechanism 6. All slurry flowing out of the feed head 504 must be filtered by the filter screen 8 before entering the subsequent grouting pipe 7. The connecting mechanism 6 is used to detachably connect the feeding head 504 of the conveying mechanism 5 to the grouting pipe 7. The connecting mechanism 6 includes a connector 601 and a sliding tube 604. The connector 601 can be inserted into the feeding head 504. An annular groove 608 is provided on the outer peripheral wall of the connector 601. The other end of the connector 601 is used to connect to the grouting pipe 7. The sliding tube 604 is slidably sleeved on the outside of the feeding head 504. At least one through hole 606 is provided on the tube wall of the feeding head 504. In this embodiment, the through holes 606 are preferably multiple and extend along the feeding head. The feed head 504 is evenly distributed around its circumference; an annular exit groove 605 is provided on the inner wall of the slide tube 604; each through hole 606 contains a freely rolling ball 607; the connecting mechanism 6 also includes a fixing ring 602 and a spring 603. The fixing ring 602 is fixed to the outside of the feed head 504, and the spring 603 is sleeved on the outer circumference of the connecting head 601 and elastically abuts against the fixing ring 602 and the slide tube 604. In its natural state, the spring 603 applies a thrust to the slide tube 604 to make it tend to lock in the position.

[0027] Working principle: During grouting operation, grout is first added to grout tank 3 through inlet 302. Then, the first motor 401 is started. The first motor 401 drives the rotating shaft 403 and the first stirring blade 408 and the first gear plate 404 fixed on the rotating shaft 403 to rotate synchronously. The first gear plate 404 drives the second gear plate 406 to rotate in the opposite direction through the meshing gear 405, which in turn drives the second stirring blade 409 on the sleeve shaft 407 to form a high-speed shearing and stirring with the first stirring blade 408 in opposite directions. At the same time, the scraper 410 scrapes the bottom of the tank synchronously. The uniformly stirred grout enters the conveying mechanism 5 from outlet 303. The second motor 502 drives the spiral blade 503 to rotate, pushing the grout to the feeding head 504. After being filtered by the filter screen 8, the grout enters the grouting pipe 7 through the connecting mechanism 6. During connection and disassembly, under the thrust of spring 603, the connecting mechanism 6 locks the slide tube 604 in the locked position. At this time, the inner wall of the slide tube 604 abuts against the ball 607, causing part of the ball 607 to protrude out of the through hole 606 and be inserted into the slot 608 of the connector 601, thus achieving reliable locking between the feed head 504 and the connector 601. When disassembly is required, slide the slide tube 604 towards the fixing ring 602 to compress the spring 603. When the slide tube 604 moves to the predetermined position, the exit groove 605 on the inner wall of the slide tube 604 aligns with the positions of the through hole 606 and the ball 607. The ball 607 loses its radial constraint and retracts into the exit groove 605, releasing the locking of the slot 608 on the connector 601. At this time, the connector 601, the grouting pipe 7, and the filter screen 8 can be directly pulled out, achieving tool-free quick disassembly.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grouting device for bridge construction, comprising a grout tank (3), a stirring mechanism (4) disposed within the grout tank (3), a conveying mechanism (5) connected to the outlet (303) of the grout tank (3), and a connecting mechanism (6) connected to the conveying mechanism (5), characterized in that, The stirring mechanism (4) includes a rotating shaft (403) and a sleeve shaft (407) sleeved outside the rotating shaft (403). A first stirring blade (408) and a first gear disk (404) are fixedly connected on the rotating shaft (403). A second stirring blade (409) and a second gear disk (406) are fixedly connected on the sleeve shaft (407). The first gear disk (404) is connected to the second gear disk (406) through meshing gears (405). The connecting mechanism (6) is used to detachably connect the feeding head (504) of the conveying mechanism (5) to the grouting pipe (7). The connecting mechanism (6) includes a connector (601), and a slot (608) is provided on the outer peripheral wall of the connector (601). A sliding tube (604) is slidably connected to the outside of the feeding head (504). A through hole (606) and an exit groove (605) are provided on the inner wall of the sliding tube (604). A rolling ball (607) is provided in the through hole (606). In the locked state, the inner wall of the sliding tube (604) abuts against the ball (607), so that part of the ball (607) protrudes out of the through hole (606) and is locked in the slot (608) of the connector (601), and the exit groove (605) is offset from the position of the ball (607).

2. The grouting device for bridge construction according to claim 1, characterized in that, A scraper (410) is fixedly connected to the bottom of the first stirring blade (408), and the outline of the scraper (410) is adapted to the shape of the bottom of the slurry tank (3).

3. A grouting device for bridge construction according to claim 1, characterized in that, The connecting mechanism (6) further includes a fixing ring (602) and a spring (603). The spring (603) is sleeved on the outer periphery of the connector (601) and elastically abuts against the fixing ring (602) and the slide tube (604).

4. A grouting device for bridge construction according to claim 1, characterized in that, The connecting mechanism (6) is provided with a filter screen (8), which is clamped between the end of the feed head (504) and the end of the connector (601).

5. A grouting device for bridge construction according to claim 1, characterized in that, The stirring mechanism (4) also includes a first motor (401), the output shaft of which is fixedly connected to the rotating shaft (403).

6. A grouting device for bridge construction according to claim 5, characterized in that, The stirring mechanism (4) also includes a housing (402), the first motor (401) is mounted on the top of the housing (402), and the housing (402) is fixed to the top of the slurry tank (3).

7. A grouting device for bridge construction according to claim 1, characterized in that, The conveying mechanism (5) includes a feeding pipe (501), a second motor (502) and a spiral blade (503). The spiral blade (503) is rotatably connected to the feeding pipe (501) and driven by the second motor (502).

8. A grouting device for bridge construction according to claim 1, characterized in that, It also includes an equipment frame (1) and a bracket (2), and the slurry tank (3) is fixed to the equipment frame (1) by the bracket (2).

9. A grouting device for bridge construction according to claim 1, characterized in that, The slurry tank (3) includes a tank body (301), with an inlet (302) at the top of the tank body (301) and an outlet (303) connected to the bottom of the tank body (301).

Images