A prefabricated building construction grouting device

Abstract

This utility model relates to the field of construction equipment technology, and in particular to a grouting device for prefabricated building construction. It includes a loading vehicle, on which a spring seat is mounted. A hopper is detachably mounted on the spring seat, and the bottom of the hopper has a discharge port with a shut-off valve. The outlet of the shut-off valve is connected to a grouting pump, and the discharge hopper of the grouting pump is connected to a flexible grouting pipe. An agitator is installed inside the hopper. A geared motor is detachably mounted on the loading vehicle below the hopper, and the output shaft of the geared motor is connected to the rotating shaft of the agitator via a universal coupling. The expansion and contraction of the spring disperses vibration energy, thereby reducing the impact of vibration on the segregation and seepage of the grout inside the hopper. When the hopper is actively installed by mounting the spring seat, the geared motor and the agitator are then connected via a universal coupling. The deflection of the universal coupling eliminates the angular deviation and axial displacement caused by the swaying of the hopper on the spring seat, avoiding the problem of easy damage from rigid connections.

Description

Technical Field

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

[0002] Prefabricated construction refers to buildings where some or all of the building components are prefabricated in a factory, transported to the construction site, and assembled using reliable connection methods. Its core advantages lie in improved construction efficiency, reduced on-site wet work, enhanced quality control, and environmental friendliness. In prefabricated concrete structures, the rebar connections between prefabricated components (such as wall panels, columns, and beams) typically employ grouting sleeve connection technology. This technology involves pre-embedding metal sleeves with internal cavities at the ends of prefabricated components. During on-site assembly, the rebars of adjacent components are inserted into the sleeves, and then high-strength, non-shrinkage, specialized cement-based grout is injected into the sleeve's inner cavity. After the grout hardens, a reliable connection and force transmission between the rebars are achieved.

[0003] During grouting, conventional fixed mixing plants, located far from the work surface, are unsuitable for operations at high-rise or dispersed locations. Grouting equipment converted from ordinary engineering vehicles has poor vibration damping; during travel or operation, vehicle vibrations are directly transmitted to the grout being mixed. Continuous vibration can lead to unstable grouting pressure and may also cause grout segregation and water seepage, affecting performance stability and ultimately impacting grouting strength and density. Furthermore, in a vibrating environment, the rigid connection of the transmission structure is easily damaged by vibration or misalignment.

[0004] Therefore, this utility model provides a prefabricated building construction grouting device, which modifies the installation structure between the material tank and the vehicle to buffer vibration, eliminate the rigid connection of the transmission, disperse the misaligned force, and reduce equipment wear. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a grouting device for prefabricated building construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A prefabricated building construction grouting device includes a loading vehicle, on which a spring seat is mounted. A hopper is detachably mounted on the spring seat. The bottom of the hopper is provided with a discharge port, and a shut-off valve is provided at the discharge port. The outlet of the shut-off valve is connected to a grouting pump. The discharge hopper of the grouting pump is connected to a flexible grouting pipe. An agitator is provided inside the hopper. A geared motor is detachably mounted on the loading vehicle below the hopper. The output shaft of the geared motor is connected to the rotating shaft of the agitator via a universal coupling.

[0008] Preferably, a clamp is also provided at the connection between the grouting pump outlet and the grouting pipe.

[0009] Preferably, the spring seat includes a pressure seat fitted outside the bucket and a base that can be detachably installed on the loading vehicle. The outer wall of the bucket is provided with a protruding ring for the pressure seat to rest on. The pressure seat is provided with multiple U-shaped brackets around its periphery. Each bracket has a pressure rod inserted into it, and a spring is provided between the lower end of the pressure rod and the base.

[0010] Preferably, the base is provided with sleeves that correspond one-to-one with the card slots, and the lower end of the pressure rod and the spring are both embedded in the sleeves.

[0011] Preferably, the lower end of the pressure rod is provided with a pressure ring, and the lower end of the spring abuts against the pressure ring and the upper end abuts against the inner top wall of the sleeve.

[0012] Preferably, the upper end of the sleeve is open and has an internal thread, and a plug is screwed onto the upper end of the sleeve. The plug has a through hole in its axial center for the pressure rod to pass through.

[0013] Preferably, the output shaft of the geared motor is offset from the rotating shaft of the agitator.

[0014] Compared with the prior art, this utility model provides a prefabricated building construction grouting device, which has the following beneficial effects:

[0015] This invention uses a spring seat to mount the mixing tank, and the expansion and contraction of the springs disperses vibration energy, thereby reducing the impact of vibration on the segregation and seepage of the slurry inside the tank. Simultaneously, during the active installation of the mixing tank using the spring seat, the geared motor and the agitator are connected via a universal coupling. The deflection of the universal coupling eliminates the angular deviation and axial displacement caused by the shaking of the mixing tank on the spring seat, avoiding the problem of easy damage from rigid connections.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the entire utility model. Figure 1 .

[0018] Figure 2 This is a three-dimensional schematic diagram of the entire utility model. Figure 2 .

[0019] Figure 3 This is a top view of the present invention.

[0020] Figure 4 This is a three-dimensional schematic diagram of the present invention after the loading vehicle has been removed.

[0021] Figure 5For the present utility model Figure 4 A 3D diagram after removing the spring seat.

[0022] Figure 6 This is a three-dimensional schematic diagram of the spring seat of this utility model.

[0023] Figure 7 This is a schematic diagram of the pressure bar structure of this utility model.

[0024] Figure 8 This is a schematic diagram of the output connection between the motor and the stirring paddle of this utility model.

[0025] In the diagram: 1. Loading vehicle; 2. Hopper; 3. Pull handle; 4. Spring seat; 5. Agitator; 6. Gear motor; 7. Grouting pump; 8. Grouting pipe; 9. Clamp; 401. Pressure seat; 402. Convex ring; 403. Card seat; 404. Pressure rod; 405. Spring; 406. Pressure ring; 407. Plug; 408. Base; 409. Sleeve. Detailed Implementation

[0026] The following will refer to the appendix in the embodiments of this utility model. Figures 1-8 The technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0027] Example 1: This example provides a prefabricated building construction grouting device, including a hopper 2 with a lid (not shown in the attached diagram). A discharge port is located at the lower end of the hopper 2, and a shut-off valve is installed at the discharge port to control the external transport of grout from the hopper 2. A grouting pump 7 is connected to the discharge port of the shut-off valve. The inlet of the grouting pump 7 is connected to the discharge port of the shut-off valve via a flange and bolts. A flexible grouting pipe 8 is also connected to the discharge port of the grouting pump 7. This constitutes a traditional grouting machine structure: grout is injected into the hopper 2, and with the opening of the shut-off valve, it is pumped by the grouting pump 7 into the grouting pipe 8, thus achieving grout transport.

[0028] The hopper 2 has a perforation at its shaft center. A rotating shaft is mounted inside the perforation via multiple sets of bearings. An agitator 5 is integrally mounted on the upper end of the rotating shaft. A geared motor 6 is connected to the rotating shaft. The geared motor 6 drives the agitator 5 to stir the slurry, thereby preventing the slurry from settling and separating or seeping water.

[0029] To improve transport flexibility, the bucket 2 is typically mounted on a loading vehicle 1. The loading vehicle 1 shown in the diagram has a four-wheeled structure with a traction head mounted on the front. The traction head has a single wheel at its lower end for assistance and a handle 3 mounted on its upper end for vehicle transfer, allowing for flexible movement and suitable for maneuvering in confined spaces. Alternatively, a tractor-mounted cab can be configured for self-driving transfer, which requires even more space. Sufficient space is also provided on the loading vehicle 1 for installing a cabinet (not shown in the attached diagram). The cabinet contains two compartments, one for the control cabinet and the other for storing energy storage batteries.

[0030] In order to reduce the vibration amplitude transmitted to the hopper 2 when the loader 1 is moving or even stationary, and when the agitator 5 is running, a spring seat 4 is also installed on the loader 1. The hopper 2 is placed on the spring seat 4. The vibration is dispersed and buffered by the buffering damping of the spring seat 4, thereby reducing the probability of segregation and seepage of the slurry caused by vibration.

[0031] At this time, the geared motor 6 that drives the stirring paddle 5 to rotate is securely installed on the loading vehicle 1 to prevent the load on the spring seat 4 from being too large by the hopper 2, which would cause the spring seat 4 to be under greater pressure and the vibration amplitude to be greater once it vibrates.

[0032] Because the geared motor 6 is bolted to the loader 1, and the bucket 2 is mounted on the spring seat 4, it can sway slightly to disperse vibrations. This can cause misalignment between the output shaft of the geared motor 6 and the rotating shaft of the agitator 5, potentially damaging the rigid connection. Therefore, a universal coupling is installed between the output shaft of the geared motor 6 and the rotating shaft of the agitator 5 to replace the rigid connection with a flexible connection. A cross-shaft universal coupling is used, as shown in the attached diagram, and is a three-section structure; a four-section type can also be used as needed. As a connecting component, the universal coupling enables power transmission. In the event of vibration misalignment, the universal coupling can also bend to compensate for the misalignment, which is crucial for buffering relative displacement caused by vehicle vibrations and compensating for minor alignment errors during installation, thus avoiding the problem of easy damage to rigid connections.

[0033] In this embodiment, the output shaft of the geared motor 6 is misaligned with the rotating shaft of the agitator 5. This means that the universal coupling is already misaligned in the initial connection state. When the hopper 2 shakes up and down, the universal coupling can bend and will not produce vertical impact.

[0034] In Example 2, a further embodiment of this solution, the grout, after being pressurized by the grouting pump 7, is input into the grouting pipe 8, which generates a significant tensile force at the interface between the grouting pipe 8 and the grouting pump 7. Normally, the grouting pipe 8 and the outlet of the grouting pump 7 are connected by a flange structure and bolts, with the force acting on the bolts, or by a threaded joint. Over time, the joint may loosen, leading to material overflow. Therefore, in this embodiment, a clamp 9 is also provided at the interface between the outlet of the grouting pump 7 and the grouting pipe 8. The clamp 9 includes two semi-annular rings, with one end of each ring connected by a pre-drilled bolt; the other end is equipped with a locking mechanism for secure engagement. The inner walls of the two rings are annular grooves. The flange is secured by two sets of clamping rings, with the flange embedded in the ring groove (the inner ring of the clamping ring leaves space for the bolts, or the flange is designed with a recessed groove so that the bolts and the mating nuts are embedded in it in a hidden design). After being tightened by the locking ring, the connection position is further locked by the clamping ring 9, thereby improving the connection strength at the connection point and ensuring reliable sealing at the high-pressure delivery interface of the grouting pump 7, preventing separation and leakage of grout.

[0035] In a further embodiment of this solution (Example 3), the spring seat 4 includes a base 408 and a pressure seat 401. The base 408 is bolted to the loading vehicle 1 for detachable installation. The pressure seat 401 is annular and fits onto the outer wall of the hopper 2. A protruding ring 402 is fastened to the outer wall of the hopper 2 with screws. After the pressure seat 401 is fitted onto the hopper 2, the protruding ring 402 is assembled, and the pressure seat 401 rests on the protruding ring 402. Multiple U-shaped retainers 403 are provided around the pressure seat 401. A pressure rod 404 is inserted into each retainer 403, and a spring 405 is provided between the lower end of the pressure rod 404 and the base 408.

[0036] Based on the above technical solution:

[0037] During assembly, the base 408 is first installed on the loading vehicle 1 using bolts. Then, the pressure seat 401 is passed through the lower end of the hopper 2, and the convex ring 402 is then installed using screws. The pressure seat 401 is restrained by the convex ring 402 and the upper opening structure of the hopper 2 and will not detach. Then, the pressure rods 404 are inserted one by one from the upper end of the clamping seat 403, and the spring 405 is connected to the lower end of the pressure rod 404 and the base 408 (at this time, a hook is set so that the upper and lower ends of the spring 405 are hooked together).

[0038] After assembly, multiple sets of springs 405 in a circular array serve as support. When vibration occurs, the pressure rod 404 presses down or releases the springs 405, allowing the springs 405 to extend and retract to buffer and disperse vibration energy, thereby reducing the impact of vibration on the segregation and seepage of the slurry.

[0039] Furthermore, the card holder 403 has an open structure, allowing the pressure rod 404 to slide laterally within a certain range within its opening, accommodating horizontal displacement.

[0040] In this embodiment, for aesthetic purposes and to further restrict the pressure rod 404, the base 408 is provided with sleeves 409 corresponding to the card holder 403. The lower end of the pressure rod 404 and the spring 405 are both embedded in the sleeves 409 to achieve integrated assembly. The sleeves 409 are provided with damping seats to disperse the elastic deformation tendency of the spring 405, so that the device gradually tends to be smooth when not under continuous force.

[0041] In this embodiment, the lower end of the pressure rod 404 is provided with a pressure ring 406 (the pressure ring 406 can be a piston), and the lower end of the spring 405 abuts against the pressure ring 406, while the upper end abuts against the inner top wall of the sleeve 409. This guides the pressure rod 404 to deviate due to vibration.

[0042] In this embodiment, the upper end of the sleeve 409 is open and has an internal thread. A plug 407 is screwed onto the upper end of the sleeve 409. The plug 407 has a through hole in its axial center for the pressure rod 404 to pass through. By screwing the plug 407, the initial compression state of the spring 405 is adjusted, thereby adjusting the amplitude of the spring 405's oscillation under force.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A grouting device for prefabricated building construction, characterized in that, The system includes a loading vehicle (1), on which a spring seat (4) is mounted, and a hopper (2) is detachably mounted on the spring seat (4). The bottom of the hopper (2) is provided with a discharge port, and a stop valve is provided at the discharge port. The outlet of the stop valve is connected to a grouting pump (7). The discharge hopper of the grouting pump (7) is connected to a flexible grouting pipe (8). A stirring paddle (5) is provided inside the hopper (2). A geared motor (6) is detachably mounted on the loading vehicle (1) below the hopper (2). The output shaft of the geared motor (6) is connected to the rotating shaft of the stirring paddle (5) via a universal coupling.

2. The prefabricated building construction grouting device according to claim 1, characterized in that, The grouting pump (7) is also equipped with a clamp (9) at the connection between the outlet of the grouting pump (7) and the grouting pipe (8).

3. The prefabricated building construction grouting device according to claim 1, characterized in that, The spring seat (4) includes a pressure seat (401) fitted outside the bucket (2) and a base (408) detachably mounted on the loading vehicle (1). The outer wall of the bucket (2) is provided with a protruding ring (402) for the pressure seat (401) to rest on. The pressure seat (401) is provided with multiple U-shaped card slots (403) around its periphery. Each card slot (403) is inserted with a pressure rod (404). A spring (405) is provided between the lower end of the pressure rod (404) and the base (408).

4. A prefabricated building construction grouting device according to claim 3, characterized in that, The base (408) is provided with sleeves (409) that correspond one-to-one with the card holder (403), and the lower end of the pressure rod (404) and the spring (405) are both embedded in the sleeves (409).

5. A prefabricated building construction grouting device according to claim 4, characterized in that, The lower end of the pressure rod (404) is provided with a pressure ring (406), and the lower end of the spring (405) abuts against the pressure ring (406) and the upper end abuts against the inner top wall of the sleeve (409).

6. A prefabricated building construction grouting device according to claim 5, characterized in that, The upper end of the sleeve (409) is open and has an internal thread. A plug (407) is screwed onto the upper end of the sleeve (409). The plug (407) has a through hole on its axis for the pressure rod (404) to pass through.

7. A prefabricated building construction grouting device according to claim 1, characterized in that, The output shaft of the geared motor (6) is misaligned with the rotating shaft of the agitator (5).

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