Eccentric wheel structure of fireproof spraying machine

Abstract

The utility model discloses an eccentric wheel structure of a fireproof spraying machine, which comprises a spraying machine shell, a hyperboloid gear reducer arranged in the spraying machine shell, two side plate brackets arranged on one side in the spraying machine shell, a first rotating shaft rotationally connected between the two side plate brackets through a bearing, and an eccentric wheel fixedly connected on the rotating shaft, a strip-shaped through groove is formed in the side plate support, rolling bearings are arranged in the strip-shaped through groove, a second rotating shaft is rotationally connected between the two rolling bearings, a coupling sleeve is fixedly connected to the second rotating shaft, and the position, away from the first rotating shaft, of the eccentric wheel is connected with the second rotating shaft. A plunger rod is arranged at the bottom of the coupling sleeve; the spraying device has the advantages that the eccentric wheel is driven to rotate through the double-curved-surface gear reducer, so that the second rotating shaft reciprocates up and down in the strip-shaped through groove, the plunger rod is driven to reciprocate, opening and closing of the valve can be more accurately controlled, and starting and stopping of spraying are accurately adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying machine equipment, in particular to an eccentric wheel structure of a fireproof spraying machine. Background Technique

[0002] A fireproof spraying machine is a special equipment used to apply a fireproof protective layer on the surface of building structures or other materials. The main purpose of this machine is to improve the fireproof performance of materials, slow down the spread of fire, and provide longer escape and rescue time. Traditionally, a hydraulic drive system is often used to control the movement and operation of the spraying machine. The hydraulic system is widely adopted due to its powerful power output and stability under heavy loads.

[0003] However, the hydraulic system involves complex pipelines and multiple hydraulic components such as pumps, valves, and cylinders. The maintenance of these systems is not only costly but also requires professional technical support. The leakage of hydraulic oil may also cause equipment failures and production stagnation. Although the hydraulic system is powerful, its energy efficiency is usually low. The dynamic response speed of the system is also limited by the flow and pressure changes of the hydraulic oil, which affects the flexibility and precision of operation, especially in spraying operations that require fine control. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides an eccentric wheel structure of a fireproof spraying machine, which effectively solves the problems of low movement precision, high maintenance cost, and slow response speed of the traditional hydraulic system for driving and controlling the spraying machine.

[0005] The utility model adopts the following technical scheme: 1. An eccentric wheel structure of a fireproof spraying machine, including a spraying machine housing, characterized in that: a hypoid gear reducer is installed in the spraying machine housing, two side plate brackets are installed on one side in the spraying machine housing, a first rotating shaft is rotatably connected between the two side plate brackets through bearings, an eccentric wheel is fixedly connected to the first rotating shaft, the output end of the hypoid gear reducer is connected to the first rotating shaft, a strip-shaped through groove is opened on the side plate bracket, a rolling bearing is arranged in the strip-shaped through groove, a second rotating shaft is rotatably connected between the two rolling bearings, a coupling sleeve is fixedly connected to the second rotating shaft, the position of the eccentric wheel far from the first rotating shaft is connected to the second rotating shaft, a plunger rod is arranged at the bottom of the coupling sleeve, a connecting plate is arranged between the bottoms of the two side plate brackets, and the plunger rod penetrates through the connecting plate and is connected with a valve.

[0006] Further, the plunger rod is slidably connected with the connecting plate.

[0007] Further, the rolling bearing rolls in the strip-shaped through groove.

[0008] Further, the eccentric wheel is fixedly connected to the second rotating shaft.

[0009] Furthermore, the eccentric wheel is made of high-strength alloy material.

[0010] The advantages of the present utility model are as follows: The use of a hyperbolic gear reducer can effectively convert the high-speed rotation of the motor into the required slower speed and greater torque. This precise speed adjustment can ensure the uniform distribution of the spraying material, thereby improving the spraying quality and effect. The eccentric wheel is fixedly connected to the second rotating shaft, and rolling bearings are installed at both ends of the second rotating shaft. Therefore, the eccentric wheel can rotate along with the second rotating shaft, while the rolling bearings can only roll up and down in the strip-shaped through groove. Therefore, when the eccentric wheel rotates, it will drive the second rotating shaft to reciprocate up and down in the strip-shaped through groove, thereby driving the plunger rod to reciprocate, and can more precisely control the opening and closing of the valve, so as to precisely adjust the start and stop of spraying to adapt to different spraying requirements and working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic structural diagram of the present utility model.

[0013] In the figure, 1 - spraying machine housing, 2 - hyperbolic gear reducer, 3 - side plate bracket, 4 - first rotating shaft, 5 - eccentric wheel, 6 - strip-shaped through groove, 7 - rolling bearing, 8 - second rotating shaft, 9 - coupling sleeve, 10 - plunger rod, 11 - connecting plate, 12 - valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0015] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0016] Refer to Figure 1-2 As shown, an eccentric wheel structure of a fireproof spraying machine includes a spraying machine housing 1. A hypoid gear reducer 2 is installed inside the spraying machine housing 1. Two side plate brackets 3 are installed on one side inside the spraying machine housing 1. A first rotating shaft 4 is rotatably connected between the two side plate brackets 3 through bearings. An eccentric wheel 5 is fixedly connected to the first rotating shaft 4. The output end of the hypoid gear reducer 2 is connected to the first rotating shaft 4. A strip-shaped through groove 6 is formed on the side plate bracket 3. A rolling bearing 7 is arranged inside the strip-shaped through groove 6. A second rotating shaft 8 is rotatably connected between the two rolling bearings 7. A coupling sleeve 9 is fixedly connected to the second rotating shaft 8. The position of the eccentric wheel 5 away from the first rotating shaft 4 is connected to the second rotating shaft 8. A plunger rod 10 is arranged at the bottom of the coupling sleeve 9. A connecting plate 11 is arranged between the bottoms of the two side plate brackets 3. The plunger rod 10 penetrates through the connecting plate 11 and is connected to a valve 12.

[0017] The plunger rod 10 is slidably connected to the connecting plate 11, and the plunger rod 10 can move freely, so as to realize precise control of the spraying flow rate.

[0018] The rolling bearing 7 rolls inside the strip-shaped through groove 6 to ensure that the plunger rod 10 can make reciprocating motions.

[0019] The eccentric wheel 5 is fixedly connected to the second rotating shaft 8, ensuring the directness of motion transmission.

[0020] The eccentric wheel 5 is made of high-strength alloy material, increasing the corrosion resistance and wear resistance of the entire spraying mechanism, and being suitable for long-term high-load working environments.

[0021] Working principle: The hypoid gear reducer 2 drives the first rotating shaft 4 to drive the eccentric wheel 5 to rotate. The eccentric wheel 5 is fixedly connected to the second rotating shaft 8, and rolling bearings 7 are installed at both ends of the second rotating shaft 8. Therefore, the eccentric wheel 5 can rotate following the second rotating shaft 8, while the rolling bearing 7 can only roll up and down inside the strip-shaped through groove 6. So when the eccentric wheel 5 rotates, it will drive the second rotating shaft 8 to make reciprocating motions up and down inside the strip-shaped through groove 6, thereby driving the plunger rod 10 to make reciprocating motions. The plunger rod 10 further transmits this reciprocating action to the valve 12 to control the opening and closing of the valve. The operation of the valve directly affects the spray head of the spraying machine, adjusting the spraying amount of the material and the intermittency of spraying.

[0022] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0023] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An eccentric wheel structure of a fireproof spraying machine, comprising a spraying machine housing (1), characterized in that: A hypoid gear speed reducer (2) is installed inside the spraying machine housing (1). On one side inside the spraying machine housing (1), two side plate brackets (3) are installed. A first rotating shaft (4) is rotatably connected between the two side plate brackets (3) through bearings. An eccentric wheel (5) is fixedly connected to the first rotating shaft (4). The output end of the hypoid gear speed reducer (2) is connected to the first rotating shaft (4). A strip-shaped through groove (6) is formed in the side plate bracket (3). A rolling bearing (7) is arranged in the strip-shaped through groove (6). A second rotating shaft (8) is rotatably connected between the two rolling bearings (7). A coupling sleeve (9) is fixedly connected to the second rotating shaft (8). The eccentric wheel (5) is connected to the second rotating shaft (8) at a position away from the first rotating shaft (4). A plunger rod (10) is arranged at the bottom of the coupling sleeve (9). A connecting plate (11) is arranged between the bottoms of the two side plate brackets (3). The plunger rod (10) penetrates through the connecting plate (11) and is connected to a valve (12).

2. The eccentric wheel structure of a fireproof spraying machine according to claim 1, characterized in that: The plunger rod (10) is slidably connected to the connecting plate (11).

3. The eccentric wheel structure of a fireproof spraying machine according to claim 2, characterized in that: The rolling bearing (7) rolls in the strip-shaped through groove (6).

4. The eccentric wheel structure of a fireproof spraying machine according to claim 3, characterized in that: The eccentric wheel (5) is fixedly connected to the second rotating shaft (8).

5. The eccentric wheel structure of a fireproof spraying machine according to claim 4, characterized in that: The eccentric wheel (5) is made of high-strength alloy material.

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