Concrete pump outlet connecting device for coal mine

Abstract

This utility model relates to the technical field of pump body connection, and in particular to a discharge port connection device for a concrete pump in a coal mine. It uses a clamping mechanism to limit the second connecting pipe, thereby making the connection between the first and second connecting pipes tighter. An impact mechanism is used to impact and strike the outer wall of the first connecting pipe, thereby vibrating the concrete adhering to the inner wall of the first connecting pipe, causing it to fall off and preventing excessive adhesion and blockage of the first connecting pipe. The first and second connecting pipes are snap-fitted together and clamped stably by the clamping mechanism. The first connecting pipe is fixedly connected to the external pump body. A first fixing plate is fixedly installed on the first connecting pipe, a connecting plate is fixedly installed on the first fixing plate, and a second fixing plate is fixedly installed on the connecting plate. The first fixing plate is equipped with an impact mechanism, which includes two second rotating shafts.

Description

Technical Field

[0001] This utility model relates to the technical field of pump body connection, specifically a discharge port connection device for a concrete pump used in coal mines. Background Technology

[0002] Mine construction is a comprehensive project encompassing three major engineering components: mine construction, civil engineering, and electromechanical installation. It involves a large workload, complex technology, long construction period, numerous equipment requirements, and substantial material consumption. Therefore, meticulous organization and strengthened management are essential to ensure the achievement of project quality and schedule targets. In underground coal mine shotcrete and anchor support operations or in the treatment of coal seams with spontaneous combustion tendencies, concrete is required to seal the surface of rock tunnels or coal seams.

[0003] Currently, most existing concrete pumps used in coal mines connect their discharge ports to external pipelines via rotary joints or threads. A search reveals a utility model patent with Chinese patent publication number CN217815613U: a connecting device for the discharge port of a concrete pump used in coal mines, comprising: a connecting pipe, which is a tapered pipe with a first connecting end and a second connecting end, the second connecting end of which is connected to a cleaning mechanism; a discharge pipe located between the first and second connecting ends and connected to the connecting pipe; a connecting mechanism located between the first connecting end and the concrete pump discharge port, the connecting mechanism comprising: two rings, both coaxial with the connecting pipe and respectively fixedly sleeved on the outer edge of the concrete pump discharge port and the outer edge of the first connecting end of the connecting pipe; an annular buckle, a ring structure composed of a first baffle, an annular belt, and a second baffle connected in sequence, with two grooves formed on its inner surface along its direction, both grooves extending from the first baffle to the second baffle; and bolts, with both ends connected to the first and second baffles respectively.

[0004] However, existing technical solutions involve flushing the connecting pipe with a water source during use. However, the water added during flushing can alter the concrete's concentration, potentially affecting its performance and project quality. Therefore, a new concrete pump discharge port connection device for coal mines is needed to address these issues. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a concrete pump outlet connection device for coal mines that uses a clamping mechanism to limit the second connecting pipe, thereby making the connection between the first and second connecting pipes tighter. An impact mechanism is also provided to impact and strike the outer wall of the first connecting pipe, thereby vibrating the concrete adhering to the inner wall of the first connecting pipe and causing it to fall off, preventing excessive adhesion and blockage of the first connecting pipe.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a concrete pump outlet connection device for coal mines, comprising a first connecting pipe and a second connecting pipe, wherein the first connecting pipe and the second connecting pipe are clamped together.

[0009] The first and second connecting pipes are clamped and stabilized by a clamping mechanism.

[0010] The first connecting pipe is fixedly connected to the external pump body. A first fixing plate is fixedly installed on the first connecting pipe. A connecting plate is fixedly installed on the first fixing plate. A second fixing plate is fixedly installed on the connecting plate.

[0011] An impact mechanism is provided on the first fixed plate. The impact mechanism includes two second rotating shafts. Two L-shaped plates are symmetrically fixedly installed on the first fixed plate. The two second rotating shafts are rotatably connected to the two L-shaped plates respectively. A motor is fixedly installed on the first fixed plate. The output end of the motor is fixedly installed on the first rotating shaft. A first conveyor wheel is fixedly installed on each of the two second rotating shafts. Two second conveyor wheels are fixedly installed on the first rotating shaft. One of the first conveyor wheels and one of the second conveyor wheels are tensioned and connected by one of the conveyor belts. Two cams at different angles are symmetrically fixedly installed on each of the two second rotating shafts. The longer end of each cam is in contact with the outer wall of the first connecting pipe.

[0012] Preferably, the clamping mechanism includes two limiting plates, each with a screw rotatably mounted on it. Both screws are screwed onto a second fixed plate. Two limiting rods are symmetrically fixed on each of the two limiting plates, and each limiting rod is slidably connected to the second fixed plate.

[0013] Furthermore, a protective cover is fixedly installed on the first fixed plate, and the motor and multiple cams are located inside the protective cover.

[0014] Furthermore, a stabilizing plate is fixedly installed at the bottom of the connecting plate, and the stabilizing plate is fixedly connected to the first fixing plate.

[0015] Based on the aforementioned scheme, a stabilizing cylinder is fixedly installed on both L-shaped plates, and two second rotating shafts are rotatably connected to the two stabilizing cylinders respectively.

[0016] Furthermore, sealing rubber gaskets are provided on the inner sidewalls of both limiting plates.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a discharge port connection device for a concrete pump in a coal mine, which has the following advantages:

[0019] The first and second connecting pipes are slidably fitted together. The second connecting pipe is limited by a clamping mechanism. The motor is started, and the motor provides power to drive the first rotating shaft to rotate. This causes the two second transmission wheels to rotate synchronously. Through the cooperation of the two first and two second transmission wheels, the two second transmission wheels drive the two first transmission wheels and the two second rotating shafts to rotate. This causes multiple cams to rotate. When the longer ends of the multiple cams approach the first connecting pipe, they impact and knock the outer wall of the first connecting pipe, thereby vibrating the concrete adhering to the inner wall of the first connecting pipe and causing it to fall off, preventing excessive adhesion and blockage of the first connecting pipe. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the connection between the first and second transmission wheels of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of multiple cams in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the two limiting plates and the screw of this utility model.

[0024] The following are labels in the attached diagram: 1. First connecting pipe; 2. Second connecting pipe; 3. First fixing plate; 4. Connecting plate; 5. Second fixing plate; 6. Motor; 7. First rotating shaft; 8. Second rotating shaft; 9. L-shaped plate; 10. First transmission wheel; 11. Second transmission wheel; 12. Cam; 13. Limiting plate; 14. Screw; 15. Limiting rod; 16. Protective cover; 17. Stabilizing plate; 18. Stabilizing cylinder; 19. Sealing rubber gasket. Detailed Implementation

[0025] 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.

[0026] Example

[0027] Please see Figure 1 and Figure 2 A connection device for the discharge port of a concrete pump used in coal mines includes a first connecting pipe 1 and a second connecting pipe 2, wherein the first connecting pipe 1 and the second connecting pipe 2 are fitted together.

[0028] Please see Figure 1 , Figure 2 and Figure 4 The first connecting pipe 1 and the second connecting pipe 2 are clamped and stabilized by a clamping mechanism. The first connecting pipe 1 and the second connecting pipe 2 are slidably clamped together. The clamping mechanism limits the second connecting pipe 2. The clamping mechanism includes two limiting plates 13. Each limiting plate 13 is rotatably mounted with a screw 14. Both screws 14 are screwed to the second fixing plate 5. Two limiting rods 15 are symmetrically fixed on each of the two limiting plates 13. Each limiting rod 15 is slidably connected to the second fixing plate 5. By rotating the two screws 14 in sequence, the two screws 14 drive the two limiting plates 13 to move. The gradual approach of the two limiting plates 13 clamps the second connecting pipe 2, thereby limiting the second connecting pipe 2 and making the connection between the first connecting pipe 1 and the second connecting pipe 2 tighter.

[0029] Please see Figure 1 and Figure 2 The first connecting pipe 1 is fixedly connected to the external pump body. A first fixing plate 3 is fixedly installed on the first connecting pipe 1. A connecting plate 4 is fixedly installed on the first fixing plate 3. A second fixing plate 5 is fixedly installed on the connecting plate 4.

[0030] Please see Figure 1-3 An impact mechanism is provided on the first fixed plate 3, which includes two second rotating shafts 8. Two L-shaped plates 9 are symmetrically fixedly installed on the first fixed plate 3, and the two second rotating shafts 8 are rotatably connected to the two L-shaped plates 9 respectively. A motor 6 is fixedly installed on the first fixed plate 3, and a first rotating shaft 7 is fixedly installed at the output end of the motor 6. When the motor 6 is started, the motor 6 provides power to drive the first rotating shaft 7 to rotate. A first transmission wheel 10 is fixedly installed on each of the two second rotating shafts 8, and two second transmission wheels 11 are fixedly installed on the first rotating shaft 7, thereby enabling the two second transmission wheels 11 to rotate synchronously. One of the first transmission wheels 10 and one of the second transmission wheels 11 are connected by a... One of the conveyor belts is tensioned and connected. Through the cooperation of two first conveyor wheels 10 and two second conveyor wheels 11, the two second conveyor wheels 11 drive the two first conveyor wheels 10 and the two second rotating shafts 8 to rotate. Two cams 12 at different angles are symmetrically fixed on each of the two second rotating shafts 8. The longer end of each cam 12 is in contact with the outer wall of the first connecting pipe 1, thereby causing multiple cams 12 to rotate. When the longer ends of multiple cams 12 approach the first connecting pipe 1, they impact and knock the outer wall of the first connecting pipe 1, thereby vibrating the concrete adhering to the inner wall of the first connecting pipe 1, causing it to fall off and preventing excessive adhesion from clogging the first connecting pipe 1.

[0031] Please see Figure 1A protective cover 16 is fixedly installed on the first fixed plate 3. The motor 6 and multiple cams 12 are located inside the protective cover 16. The protective cover 16 protects the motor 6 and the two cams 12 during operation.

[0032] Please see Figure 1 and Figure 2 It should also be noted that a stabilizing plate 17 is fixedly installed at the bottom of the connecting plate 4. The stabilizing plate 17 is fixedly connected to the first fixing plate 3. The stabilizing plate 17 makes the connecting plate 4 more stable, thereby making the connection between the connecting plate 4 and the first fixing plate 3 and the second fixing plate 5 more stable.

[0033] Please see Figures 1-3 Stabilizing cylinders 18 are fixedly installed on both L-shaped plates 9. The two second rotating shafts 8 are rotatably connected to the two stabilizing cylinders 18 respectively. The setting of the two stabilizing cylinders 18 makes the rotation of the two second rotating shafts 8 more stable.

[0034] Please see Figure 4 Both limiting plates 13 have sealing rubber pads 19 on their inner sidewalls. The two sealing rubber pads 19 make the clamping of the two limiting plates 13 on the second connecting pipe 2 more tight and stable.

[0035] In summary, when using the concrete pump outlet connection device for coal mines, the first connecting pipe 1 and the second connecting pipe 2 are slidably clamped together. The two screws 14 are rotated sequentially, causing the two screws 14 to move the two limiting plates 13. The two limiting plates 13 gradually approach each other, clamping the second connecting pipe 2 and limiting its position, thus making the connection between the first connecting pipe 1 and the second connecting pipe 2 tighter. The motor 6 is then started. This motor is a commercially available device known to those skilled in the art; we are only using it practically without making any structural or functional improvements, which will not be elaborated upon here. The motor is equipped with a matching control switch. The installation location is selected according to actual practical needs to facilitate operation and control by the operator. The motor 6 provides power to drive the first rotating shaft 7 to rotate, which in turn causes the two second transmission wheels 11 to rotate synchronously. Through the cooperation of the two first transmission wheels 10 and the two second transmission wheels 11, the two second transmission wheels 11 drive the two first transmission wheels 10 and the two second rotating shafts 8 to rotate, which in turn causes the multiple cams 12 to rotate. When the longer end of the multiple cams 12 approaches the first connecting pipe 1, it impacts and knocks the outer wall of the first connecting pipe 1, thereby vibrating the concrete adhering to the inner wall of the first connecting pipe 1 and causing it to fall off, preventing excessive adhesion and blockage of the first connecting pipe 1.

[0036] 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 claims and their equivalents.

Claims

1. A discharge port connection device for a concrete pump used in coal mines, comprising a first connecting pipe (1) and a second connecting pipe (2), characterized in that: The first connecting pipe (1) and the second connecting pipe (2) are snap-fitted together; The first connecting pipe (1) and the second connecting pipe (2) are clamped and stabilized by a clamping mechanism; The first connecting pipe (1) is fixedly connected to the external pump body. A first fixing plate (3) is fixedly installed on the first connecting pipe (1). A connecting plate (4) is fixedly installed on the first fixing plate (3). A second fixing plate (5) is fixedly installed on the connecting plate (4). An impact mechanism is provided on the first fixed plate (3). The impact mechanism includes two second rotating shafts (8). Two L-shaped plates (9) are symmetrically fixed on the first fixed plate (3). The two second rotating shafts (8) are rotatably connected to the two L-shaped plates (9) respectively. A motor (6) is fixedly installed on the first fixed plate (3). A first rotating shaft (7) is fixedly installed at the output end of the motor (6). A first conveyor wheel (10) is fixedly installed on each of the two second rotating shafts (8). Two second conveyor wheels (11) are fixedly installed on the first rotating shaft (7). One of the first conveyor wheels (10) and one of the second conveyor wheels (11) are tensioned and connected by one of the conveyor belts. Two cams (12) at different angles are symmetrically fixed on each of the two second rotating shafts (8). The longer end of each cam (12) is in contact with the outer wall of the first connecting pipe (1).

2. The discharge port connection device for a concrete pump in a coal mine according to claim 1, characterized in that: The clamping mechanism includes two limiting plates (13), each of which is rotatably mounted with a screw (14). Both screws (14) are screwed onto the second fixing plate (5). Two limiting rods (15) are symmetrically fixed on each of the two limiting plates (13), and each limiting rod (15) is slidably connected to the second fixing plate (5).

3. The discharge port connection device for a concrete pump in a coal mine according to claim 2, characterized in that: A protective cover (16) is fixedly installed on the first fixed plate (3), and the motor (6) and multiple cams (12) are located inside the protective cover (16).

4. The discharge port connection device for a concrete pump in a coal mine according to claim 3, characterized in that: A stabilizing plate (17) is fixedly installed at the bottom of the connecting plate (4), and the stabilizing plate (17) is fixedly connected to the first fixing plate (3).

5. The discharge port connection device for a concrete pump in a coal mine according to claim 4, characterized in that: Stabilizing cylinders (18) are fixedly installed on both L-shaped plates (9), and two second rotating shafts (8) are rotatably connected to the two stabilizing cylinders (18) respectively.

6. The discharge port connection device for a concrete pump in a coal mine according to claim 5, characterized in that: A sealing rubber gasket (19) is provided on the inner sidewall of both limiting plates (13).

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