Sand and stone cement transfer device

Abstract

The utility model discloses a sand and stone cement transfer device relates to sand and stone cement transportation technical field. Include: firm frame, inside assembly have waterwheel structure, outside is provided with slide structure, the slide structure is hollow design, and there is the screen seat that realizes reciprocating movement with waterwheel structure rotation inside, the screen seat is used for separating sand and stone cement mixture with cement fine material and lets the sand and stone cement mixture through the screen seat and falls into the slide structure bottom's discharge channel, and sand and stone coarse material is pushed to the lowest end of slide structure by the reciprocating movement of screen seat and removes manually. The utility model discloses the rotation of waterwheel wheel drives the stress bar to do the circumferential motion, and the reciprocating linear motion of screen seat is converted with the help of telescopic traction arm circular motion, need not to set up vibration motor additionally, both reduced equipment energy consumption, and avoided the shutdown problem caused by circuit failure.

Description

Technical Field

[0001] This utility model relates to the field of sand, gravel and cement transportation technology, specifically a sand, gravel and cement transfer device. Background Technology

[0002] During the construction process, the mixture of sand, gravel and cement needs to be sorted and screened during transportation, so a sand, gravel and cement transportation device needs to be designed.

[0003] A search revealed that Chinese utility model patent application with publication number "CN222474235U" proposes "a sand and cement transfer device". By setting a U-shaped support frame, support shaft, protective ring and anti-detachment ring, the rollers can achieve the principle of universal wheels. This allows the overall sand and cement transfer device to move while also controlling the movement angle of the sand and cement transfer device. It prevents the U-shaped support frame with a fixed rotation angle from hindering the movement of the sand and cement transfer device and reduces the impact of space constraints.

[0004] However, in actual use, the aforementioned disclosed device and similar existing devices, when handling the separation and transportation of sand, gravel and cement, rely on the static screen to separate the material by its own gravity. For cement mixtures with high viscosity, the screen holes are easily blocked by cement fines, resulting in slow separation speed and failing to meet the high-efficiency requirements of batch transfer. In addition, setting up a separate vibrating motor to drive the screen requires an additional power source, which not only increases the energy consumption of the equipment but also increases the risk of circuit failure. Utility Model Content

[0005] The purpose of this invention is to provide a sand and cement transfer device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A sand, gravel, and cement transfer device, comprising:

[0008] The frame is sturdy and has an internal waterwheel structure and an external slide structure.

[0009] The slide structure is hollow, with a screen seat inside that moves back and forth along with the waterwheel structure. The screen seat is used to separate the sand and cement mixture, allowing fine cement to fall through the screen seat into the discharge channel at the bottom of the slide structure, while coarse sand and gravel are pushed to the end of the slide structure by the reciprocating motion of the screen seat. The screen seat can be removed manually.

[0010] Furthermore, the waterwheel structure includes:

[0011] The water wheel rotates on a shaft installed inside the stabilizing frame. The inside of the water wheel forms a collection trough for collecting cement fines. One end of the shaft is connected to the output shaft of a servo motor installed on the outside of the stabilizing frame via a coupling.

[0012] A force-bearing rod is fixed to one edge of the surface of the water wheel. The slide structure has a movable notch at the same position as the force-bearing rod. A connecting rod that matches the movable notch is fixed to one side of the screen base. A telescopic traction arm is hinged between the connecting rod and the force-bearing rod.

[0013] Furthermore, as the water wheel slowly rotates under the drive of the servo motor, the force rod also makes a circular motion. Through the articulated telescopic traction arm, it pulls or pushes the connecting rod on one side of the screen base to make a reciprocating linear motion along the movable opening in the slide structure, thereby driving the screen base to move back and forth inside the slide structure.

[0014] Furthermore, a control panel is fixed to one end of the surface of the stabilizing frame. The control panel is used to control the start, stop, and speed adjustment of the servo motor.

[0015] Furthermore, the slide structure includes:

[0016] The slide frame has a hollow interior design, and the movable notch is opened on one side wall of the slide frame, forming a long strip along its length.

[0017] The connecting rod passes through the movable notch and is hinged to the end of the telescopic traction arm away from the force-bearing rod. The slide frame is inclined as a whole, with the high end located at the top of the water wheel and the low end extending away from the stabilizing frame.

[0018] Furthermore, a motor frame is fixed at the center of one side of the stabilizing frame, and the base of the servo motor is fixed to the top of the motor frame.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This sand and cement transfer device uses the rotation of a water wheel to drive the force rod to make a circular motion. The circular motion is converted into the reciprocating linear motion of the screen seat by the telescopic traction arm. There is no need to install an additional vibration motor, which reduces the energy consumption of the equipment and avoids the downtime caused by circuit failure.

[0021] Meanwhile, the back-and-forth movement of the screen holder can effectively prevent sticky cement fines from sticking together and clogging the screen holes, significantly improving the separation speed of sand and cement mixtures and meeting the high-efficiency requirements of batch transfer.

[0022] In addition, the collection trough inside the waterwheel can temporarily store the falling cement fines during rotation, and when it rotates to a specific angle, it can be poured into the collection area below the waterwheel structure, thus avoiding the problem of cement fines accumulating and clogging after separation.

[0023] Finally, the inclined design of the slide frame utilizes gravity to assist in the conveying of coarse sand and gravel. Combined with the pushing action of the screen base, it ensures that the coarse material can smoothly reach the lowest end of the slide structure, making it convenient for manual collection and cleaning. Attached Figure Description

[0024] Figure 1 This is an isometric drawing of the present invention;

[0025] Figure 2 This is a main sectional view of the present invention;

[0026] Figure 3 This is a left and right isometric projection of the present invention.

[0027] In the diagram: 1. Stabilizing frame; 2. Servo motor; 3. Motor frame; 4. Water wheel; 5. Control panel; 6. Slide frame; 7. Screen holder; 8. Movable notch; 9. Connecting rod; 10. Telescopic traction arm; 11. Force-bearing rod; 12. Storage trough; 13. Support roller frame. Detailed Implementation

[0028] 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.

[0029] Before understanding the technical solution proposed in this application, it should be clear that the application scenario of this technical solution is specifically the on-site separation and transfer of sand and cement mixtures in construction, especially suitable for small construction sites or temporary construction sites where it is necessary to quickly separate and collect coarse sand and fine cement materials.

[0030] like Figures 1-3As shown, this solution includes a stabilizing frame 1, which houses a waterwheel structure internally and a slide structure externally. The slide structure is hollow and contains a screen base 7. The screen base 7 moves smoothly back and forth with the rotation of the waterwheel structure, specifically designed for the efficient separation of sand, gravel, and cement mixtures. Specifically, fine cement particles fall through the mesh of the screen base 7 into the discharge channel at the bottom of the slide structure, while coarse sand and gravel particles are pushed to the end of the slide structure by the reciprocating motion of the screen base 7. The separation is completed by disassembling the screen base 7. Regarding the cleaning process, it should be noted that the connection between the screen holder 7 and the slide structure in this technical solution uses a common snap-fit ​​structure found in existing technologies. Specifically, two U-shaped slots are pre-set along the length of the inner side of the slide structure, which fit the left and right edges of the screen holder 7. The screen holder 7 is made of high-strength plastic and is integrally molded. The edges are designed with raised ribs that match the slots. During installation, simply align the screen holder 7 with the slots from the top opening of the slide structure and gently push it to the bottom. The friction between the raised ribs and the inner wall of the slots will secure it firmly. During disassembly, simply grasp the plastic handle (not clearly shown in the figure) at the front end of the screen holder 7 and pull it outwards along the slot direction to quickly remove it. The entire process requires no tools and is perfectly suited to the frequent disassembly and cleaning needs of workers on small construction sites.

[0031] It should be noted that in this technical solution, the waterwheel structure specifically includes a waterwheel 4. The waterwheel 4 is rotatably mounted on a rotating shaft inside the stabilizing frame 1 via a precision bearing. The shaft has a depth-optimized storage groove 12, which is specifically used to store cement fines. One end of the rotating shaft is firmly connected to the output shaft of the servo motor 2 installed on the outside of the stabilizing frame 1 via a coupling. A sturdy force-bearing rod 11 is fixed to one edge of the surface of the waterwheel 4. The slide structure has a precisely opened movable notch 8 at the same position as the force-bearing rod 11. A connecting rod 9 that perfectly matches the movable notch 8 is fixed to one side of the screen base 7. A flexible and reliable telescopic traction arm 10 is installed between the connecting rod 9 and the force-bearing rod 11 by a hinge.

[0032] It is worth noting that as the water wheel 4 rotates slowly and uniformly under the stable drive of the servo motor 2, the force rod 11 also makes a precise circular motion. Through the articulated telescopic traction arm 10, it effectively pulls or pushes the connecting rod 9 on one side of the screen base 7, so that it completes a smooth reciprocating linear motion along the movable opening 8 of the slide structure, thereby efficiently driving the screen base 7 to move back and forth inside the slide structure.

[0033] Furthermore, it should be noted that in this technical solution, a control panel 5 is fixed to one end of the surface of the stabilizing frame 1. The control panel 5 is used to intuitively control the start, smooth stop, and precise speed adjustment of the servo motor 2. It should be further noted that the slide structure further includes a slide frame 6. The slide frame 6 has a hollow interior design. The movable notch 8 is precisely opened on one side wall of the slide frame 6, forming a long strip-shaped opening along its length. The connecting rod 9 accurately passes through the movable notch 8 and is firmly hinged to the end of the telescopic traction arm 10 away from the force-bearing rod 11. The slide frame 6 is arranged at an inclined angle, with the high end set at the top of the water wheel 4 and the low end extending naturally away from the stabilizing frame 1 to ensure smooth material flow.

[0034] Finally, it should be added that in this technical solution, a dedicated motor frame 3 is firmly fixed at the center of one side of the stabilizing frame 1, and the base of the servo motor 2 is tightly fixed to the top of the motor frame 3 to ensure the stability and reliability of the overall structure.

[0035] It is worth noting that, in actual use, the technical solution proposed in this application involves slowly pouring the sand, gravel, and cement mixture to be transferred into the high-end inlet of the slide frame 6 (see reference). Figure 1 (Position), the mixture will slide at a constant speed along the inner wall of the slide to the surface of the screen base 7. At this time, the servo motor 2 is started through the control panel 5. The servo motor 2 drives the rotating shaft to rotate through the high-precision coupling, which in turn drives the water wheel 4 to make a uniform circular motion. When the water wheel 4 rotates, the force rod 11 on its surface edge also makes a circular motion. Through the hinged telescopic traction arm 10, it pulls or pushes the connecting rod 9 on one side of the screen base 7. The connecting rod 9 passes through the long strip movable notch 8 on the side wall of the slide frame 6 and makes a reciprocating linear motion along the length of the notch, thereby driving the screen base 7 to move back and forth inside the slide frame 6. Under the reciprocating action of the screen base 7, the cement fines in the sand and cement mixture fall through the screen base 7 into the receiving groove 12 of the water wheel 4 below, while the coarse sand and gravel are continuously pushed by the screen base 7 to the lower outlet of the slide frame 6 (refer to Figure 2 (Location marked 6) is where workers can use shovels or conveyor belts to collect coarse materials and transport them to designated locations.

[0036] Furthermore, it should be noted that in this technical solution, the effective length of the telescopic traction arm 10 (i.e., the maximum extension value of the hinge point distance between the force-bearing rod 11 and the connecting rod 9) must form a specific proportion with the radius of the water wheel 4. Specifically, the effective length of the telescopic traction arm 10 is equal to 1.2 to 1.5 times the radius of the water wheel 4. It is worth noting that when the force-bearing rod 11 moves in a circular motion with the water wheel 4, the change in length of the telescopic traction arm 10 must precisely cover the necessary reciprocating stroke of the screen seat 7 within the slide frame 6—when the force-bearing rod 11 rotates to the top position of the water wheel 4, the telescopic traction arm 10 is in a fully extended state, at which point the screen seat 7 is pushed onto the slide. Directly below the high-end inlet of frame 6 (i.e., the initial position where the material just enters the chute), this ensures that the freshly poured mixture can immediately contact the screen for separation. When the force rod 11 rotates to the bottom position of the water wheel 4, the telescopic traction arm 10 is in a fully retracted state. At this time, the screen seat 7 is pulled to the lower middle position along the length of the chute frame 6, so that the sand and gravel on the screen surface can be continuously pushed to the bottom of the chute. In addition, in this technical solution, the relationship between the inner width of the chute frame and the width of the water wheel is that the inner width of the chute frame is equal to 1.1 to 1.3 times the width of the water wheel. This design aims to reserve a 5-10mm gap between the edge of the water wheel and the inner wall of the chute frame when it rotates. This design avoids friction and jamming between the waterwheel and the slide frame during rotation, while also ensuring the overall compactness of the device. It prevents material leakage from both sides during transport due to excessive gaps. Simultaneously, this gap provides sufficient space for the swing of the telescopic traction arm, ensuring that the length change of the telescopic traction arm is smoothly transmitted to the screen base when the force rod moves in a circular motion with the waterwheel, without affecting the reciprocating motion accuracy of the screen base due to space constraints. Finally, regarding the positional relationship between the telescopic traction arm and the waterwheel, and whether interference or collision will occur between the stabilizing frame and the stabilizing frame, this technical solution sets the horizontal distance between the longitudinal support beam of the stabilizing frame and the waterwheel axis as the distance between the waterwheel and the stabilizing frame. The radius of the water wheel is 1.8 to 2.2 times that of the wheel. At the same time, the vertical gap between the transverse connecting rod of the stabilizing frame and the lowest swing trajectory of the telescopic traction arm is controlled within the range of 15-20mm. This ensures that the swing trajectory of the telescopic traction arm as it rotates with the water wheel is completely within the avoidance area of ​​the stabilizing frame, effectively preventing contact and collision between the two during movement. In addition, this technical solution further limits the distance between the edge of the water wheel and the inner side of the stabilizing frame to no less than 20mm. This ensures that the centrifugal force when the water wheel rotates will not cause the edge to rub against the stabilizing frame, while reserving buffer space for minor vibrations during device operation, thus ensuring the stability and safety of the overall structure.

[0037] It should also be noted that, for reference Figures 1 to 3It is known that, in order to reduce the pressure of the water wheel 4 on the shaft of the servo motor 2, in actual use, two support roller frames 13 are fixedly connected to the bottom of the inner part of the stabilizing frame 1. The support roller frames 13 are located directly below the water wheel 4 and are symmetrically arranged on both sides of the rotating shaft. The rollers inside the support roller frames 13 are rotatable. The roller surface of the roller is in contact with the surface of the water wheel 4 and forms a low-friction rolling contact with the water wheel 4. This is used to share the radial load of the water wheel 4 itself and the cement fines contained inside on the rotating shaft and the output shaft of the servo motor 2, and to prevent the shaft from bending and deforming due to excessive force after long-term operation.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A sand, gravel, and cement transfer device, characterized in that, include: The stabilizing frame (1) is equipped with a waterwheel structure inside and a slide structure outside; The slide structure is hollow, with a screen seat (7) inserted inside that moves back and forth as the waterwheel structure rotates. The screen seat (7) is used to separate the sand and cement mixture and allow the fine cement material to fall through the screen seat (7) into the discharge channel at the bottom of the slide structure, while the coarse sand and gravel material is pushed to the end of the slide structure by the reciprocating motion of the screen seat (7) and can be manually removed by disassembling the screen seat (7).

2. The sand, gravel, and cement transfer device according to claim 1, characterized in that: The waterwheel structure includes: The water wheel (4) rotates the shaft installed in the stabilizing frame (1). The inside of the water wheel (4) forms a storage trough (12) for collecting cement fines. One end of the shaft is connected to the output shaft of the servo motor (2) installed on the outside of the stabilizing frame (1) via a coupling. A force-bearing rod (11) is fixed on one side of the surface of the water wheel (4). The slide structure has an movable notch (8) at the same position as the force-bearing rod (11). A connecting rod (9) that matches the movable notch (8) is fixed on one side of the screen seat (7). A telescopic traction arm (10) is hinged between the connecting rod (9) and the force-bearing rod (11).

3. The sand and cement transfer device according to claim 2, characterized in that: As the water wheel (4) slowly rotates under the drive of the servo motor (2), the force rod (11) moves in a circular motion. The connecting rod (9) on one side of the screen seat (7) is pulled or pushed by the hinged telescopic traction arm (10) to make reciprocating linear motion along the movable opening (8) of the slide structure, thereby driving the screen seat (7) to move back and forth inside the slide structure.

4. The sand and cement transfer device according to claim 2, characterized in that: A control panel (5) is fixed to one end of the surface of the stabilizing frame (1). The control panel (5) is used to control the start, stop and speed adjustment of the servo motor (2).

5. A sand and cement transfer device according to claim 2, characterized in that: The slide structure includes: The slide frame (6) has a hollow interior. The movable notch (8) is opened on the side wall of one side of the slide frame (6) and forms a long strip along its length. The connecting rod (9) passes through the movable notch (8) and is hinged to the end of the telescopic traction arm (10) away from the force rod (11). The slide frame (6) is inclined as a whole, with the high end set at the top of the water wheel (4) and the low end extending away from the stabilizing frame (1).

6. A sand and cement transfer device according to claim 2, characterized in that: A motor frame (3) is fixed at the center of one side of the stabilizing frame (1), and the base of the servo motor (2) is fixed to the top of the motor frame (3).

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