Cantilever crane protection device based on wet spraying machine

Abstract

The arm support protection device based on the wet spraying machine comprises a mechanical arm, a connecting shaft and a spraying head, the connecting shaft comprises a top plate, a bottom plate and an elastic shaft, the top plate and the bottom plate are installed at the upper end and the lower end of the elastic shaft respectively, the top plate is connected with the spraying head, and the bottom plate is connected with the mechanical arm; by the adoption of the technical scheme, overlarge torque or impact force can be generated when the wet spraying machine shovels ash for cleaning, the connecting shaft can serve as a first defense line to respond firstly, due to the fact that the rigidity of the connecting shaft is lower than that of a mechanical arm, the connecting shaft deforms or breaks more easily, harmful stress is effectively absorbed and dispersed, and the design principle of a sacrifice part is adopted, so that the damage to the environment is reduced. The stress is prevented from being directly transmitted to a forearm part which is more expensive and complex in structure, the risk of damage to the forearm is effectively reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of wet spraying machines, in particular to an arm protection device based on the wet spraying machine. Background Art

[0002] In the widespread use of wet shotcrete machines, particularly in complex and demanding engineering environments such as tunnel construction, mining, and underground engineering, the connection between the nozzle and the arm is often subjected to severe stress. In particular, during the shoveling and cleanup process after the shotcrete operation is completed, the direct connection between the shoveling tool and the wet shotcrete arm often subjects the arm to excessive torque or impact, causing it to break. This not only increases equipment maintenance costs but also seriously impacts construction progress and quality. Traditional solutions often increase the arm's strength and rigidity to improve its fracture resistance, but this increases the weight and cost of the equipment and does not necessarily fundamentally resolve the problem. Utility Model Content

[0003] (1) Technical issues to be resolved

[0004] In order to solve the above problems in the prior art, the utility model provides an arm protection device based on a wet spraying machine.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0007] A boom protection device based on a wet spraying machine includes a mechanical arm, a connecting shaft and a spray head;

[0008] The connecting shaft includes a top plate, a bottom plate and an elastic shaft;

[0009] The top plate and the bottom plate are respectively installed at the upper and lower ends of the elastic shaft, the top plate is connected to the nozzle, and the bottom plate is connected to the mechanical arm.

[0010] Preferably, the elastic shaft is a helical elastic body.

[0011] Preferably, the elastic shaft is made of one of nickel-based alloy, titanium alloy, cobalt-based alloy, high-speed steel, stainless steel or tungsten steel.

[0012] Preferably, the surface of the elastic shaft is coated with color markings.

[0013] Preferably, a deformation detection sensor is installed inside the elastic shaft.

[0014] (3) Beneficial effects

[0015] The beneficial effect of the present invention is that: by adopting the above technical solution, when the wet spraying machine is shoveling dust and cleaning, the excessive torque or impact force generated by the connecting shaft will be the first to respond as the first line of defense. Since its stiffness is lower than that of the mechanical arm, the connecting shaft is more likely to deform or break, thereby effectively absorbing and dispersing these harmful stresses. This "sacrificial component" design principle avoids the direct transmission of stress to the more expensive and complex forearm part, effectively reducing the risk of damage to the forearm and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a boom protection device based on a wet spraying machine;

[0017] Figure 2 Schematic diagram of the structure of the connecting shaft.

[0018] [Description of Reference Numerals]

[0019] 1. Connecting shaft;

[0020] 11. Top plate; 12. Bottom plate; 13. Elastic shaft;

[0021] 2. Nozzle;

[0022] 3. Robotic arm. DETAILED DESCRIPTION

[0023] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0024] Please refer to Figures 1 to 2 , the utility model provides an arm protection device based on a wet spraying machine, comprising a mechanical arm 3, a connecting shaft 1 and a spray head 2;

[0025] The connecting shaft 1 includes a top plate 11, a bottom plate 12 and an elastic shaft 13;

[0026] The top plate 11 and the bottom plate 12 are respectively mounted on the upper and lower ends of the elastic shaft 13 , the top plate 11 is connected to the nozzle 2 , and the bottom plate 12 is connected to the robotic arm 3 ;

[0027] During use, the wet spraying machine will generate excessive torque or impact force when shoveling and cleaning dust. The connecting shaft 1 will respond first as the first line of defense. Since its stiffness is lower than that of the mechanical arm 3, the connecting shaft 1 is more likely to deform or break, thereby effectively absorbing and dispersing these harmful stresses. This "sacrificial component" design principle avoids the direct transmission of stress to the more expensive and complex forearm part, effectively reducing the risk of forearm damage and extending the service life of the equipment.

[0028] In this embodiment, the elastic shaft 13 is a spiral elastic body. The elastic shaft 13 can undergo reversible deformation under the action of external force and can return to its original shape after the external force is removed. It can effectively absorb impact force and protect the forearm.

[0029] In this embodiment, the elastic shaft 13 is made of one of nickel-based alloy, titanium alloy, cobalt-based alloy, high-speed steel, stainless steel or tungsten steel. The elastic shaft 13 is made of an alloy material with high strength but good toughness to ensure sufficient strength and durability under normal operating conditions.

[0030] In this embodiment, the surface of the elastic shaft 13 is coated with color markings or deformation sensors or is provided with crack detection holes. Once the connecting shaft 1 is deformed or broken, construction personnel can quickly identify and replace it with a new connecting shaft 1, thereby shortening downtime and improving construction efficiency.

[0031] The working principle of this utility model is as follows:

[0032] When the wet spraying machine is scraping and cleaning dust, the excessive torque or impact force generated by the connecting shaft 1 will respond first as the first line of defense. Since its stiffness is lower than that of the mechanical arm 3, the connecting shaft 1 is more likely to deform or break, thereby effectively absorbing and dispersing these harmful stresses. This "sacrificial component" design principle avoids the direct transmission of stress to the more expensive and complex arm part, effectively reducing the risk of arm damage and extending the service life of the equipment.

[0033] The circuits, electronic components and modules involved are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0034] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A boom protection device based on a wet spraying machine, characterized in that: Including robotic arm, connecting shaft and nozzle; The connecting shaft includes a top plate, a bottom plate and an elastic shaft; The top plate and the bottom plate are respectively installed at the upper and lower ends of the elastic shaft, the top plate is connected to the nozzle, and the bottom plate is connected to the mechanical arm.

2. The boom protection device based on the wet spraying machine according to claim 1 is characterized in that: The elastic shaft is a spiral elastic body.

3. The boom protection device based on the wet spraying machine according to claim 1 is characterized in that: The elastic shaft is made of one of nickel-based alloy, titanium alloy, cobalt-based alloy, high-speed steel, stainless steel or tungsten steel.

4. The boom protection device based on the wet spraying machine according to claim 1 is characterized in that: The surface of the elastic shaft is coated with color markings.

5. The boom protection device based on the wet spraying machine according to claim 1 is characterized in that: A crack detection hole is provided on the surface of the elastic shaft.

6. The boom protection device based on the wet spraying machine according to claim 1 is characterized in that: A deformation detection sensor is installed inside the elastic shaft.

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