Air flow rate signal collector for air pipe of air compressor of rock drilling machine

Abstract

The utility model discloses a rock drilling machine air compressor air pipe gas flow rate signal collector, which comprises a shell, an air passage gland, a connecting shaft, a rotary encoder and a central controller, and is characterized in that the left end and the right end of the shell are communicated to form an air flow passage; the connecting shaft is horizontally arranged front and back, the front end of the connecting shaft penetrates through the shell and enters the shell, and the rear end of the connecting shaft extends backwards and is rotationally connected with the shell. The air passage gland is vertically arranged in the shell, and the top end of the air passage gland is rotationally connected with the connecting shaft; and the rotary encoder is fixedly connected with the rear end of the rotating shaft and is connected with the central controller. The deslagging condition of the drill bit can be judged according to the air velocity, corresponding operation is carried out, hole blockage caused by unsmooth deslagging of the drill bit is prevented, the loss of the drill rod and the drill bit is reduced, and the drilling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rock drilling equipment, and in particular relates to a gas flow rate signal collector for an air pipe of an air compressor of a rock drilling rig. Background Art

[0002] Rock drilling technology is widely used in various engineering fields, including geological exploration, mining engineering, tunnel construction, hydropower engineering, transportation engineering, and oil and gas extraction. In these projects, rock drilling is a key initial step. Through operations such as drilling and blasting, the rock is broken to create conditions for subsequent construction. For example, in tunnel construction, rock drilling is used to dig tunnel passages; in mining engineering, drilling is used to load explosives for blasting; in oil and gas extraction, drilling is used to drill oil wells and gas wells.

[0003] In the actual drilling process, when the borehole encounters a rock interlayer, drills into soil, or the hole wall collapses, the drill bit will be buried, causing the drill bit to be inverted, which will cause the drilling rig to fail to discharge slag normally. If the drilling rig fails to discharge slag normally, the crushed stone powder will accumulate above the drill bit, jamming the drill bit and making it difficult to pull out, thereby increasing the loss of the drill rod and drill bit, leading to an increase in equipment maintenance and replacement costs. Secondly, the drilling efficiency is reduced, the construction period is extended, and the project cost is increased. In addition, the collapse of the hole wall and the burial of the drill bit may also lead to safety accidents and endanger the safety of the operator. Utility Model Content

[0004] The utility model aims to provide a gas flow rate signal collector for the air pipe of an air compressor of a rock drilling rig, so as to solve the technical problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gas flow rate signal collector for the trachea of ​​an air compressor of a rock drilling rig comprises a shell, an airway gland, a connecting shaft, a rotary encoder and a central controller. The left and right ends of the shell are connected to form an air flow channel; the connecting shaft is horizontally arranged front and back, the front end of which passes through the shell and enters the interior of the shell, and the rear end extends backward and is rotatably connected to the shell; the airway gland is vertically arranged in the shell, and the top end of which is rotatably connected to the connecting shaft; the rotary encoder is fixedly connected to the rear end of the rotating shaft and is connected to the central controller.

[0007] Furthermore, the connecting shaft is rotatably connected to the shell through a shaft sealing cover.

[0008] Furthermore, a sealing ring is provided at the connection between the connecting shaft and the shaft sealing cover.

[0009] Furthermore, the rotary encoder is connected to the rotating shaft via an elastic coupling.

[0010] Furthermore, it also includes a back cover, which is fixedly connected to the left end of the shell and has an air inlet.

[0011] Furthermore, it also includes a rear air pipe joint; the rear air pipe joint is fixedly connected to the air inlet of the rear cover.

[0012] Furthermore, it also includes a front air pipe joint; the front air pipe joint is fixedly connected to the right end of the shell.

[0013] The working process and principle of the utility model are:

[0014] The airflow enters the housing from the rear air pipe joint and pushes the airway gland. The airway gland drives the connecting shaft to rotate, and the connecting shaft drives the rotary encoder through the elastic coupling. The rotary encoder generates a pulse signal when it rotates.

[0015] The gas flow rate directly affects the opening of the gas duct gland, thereby changing the rotation angle of the connecting shaft and the rotary encoder. When the gas flow rate is high, the gas duct gland is subjected to a large thrust, the opening increases, and the rotation angle of the connecting shaft and the rotary encoder also increases. Conversely, when the gas flow rate is low, the opening of the gas duct gland decreases, and the rotation angle of the connecting shaft and the rotary encoder also decreases accordingly.

[0016] The rotary encoder generates corresponding pulse signals according to different rotation angles and transmits these signals to the central controller. After receiving the pulse signals, the central controller converts them into data for the operator's reference. The operator can perform normal drilling, reduce the thrust pressure, withdraw the rod or stop drilling according to these data, thereby preventing the hole from being blocked due to poor drill slag discharge and reducing the loss of drill rods and drill bits.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The utility model is provided with an airway gland, a connecting shaft and a rotary encoder. Under the thrust of gases with different flow rates, the airway gland will have openings of different sizes, so that the connecting shaft and the rotary encoder can obtain rotation angles of different sizes. The rotary encoder generates pulse signals of different sizes according to different rotation angles and transmits them to the central controller, which can reflect the air flow rate in the air pipe, judge the slag discharge situation of the drill bit, adjust the drilling operation, prevent hole blockage caused by poor slag discharge of the drill bit, reduce the loss of the drill rod and the drill bit, and improve the drilling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is an exploded view of the utility model;

[0022] In the attached drawings, 1-housing; 2-airway gland; 3-connecting shaft; 4-rotary encoder; 5-central controller; 6-shaft sealing cover; 7-sealing ring; 8-elastic coupling; 9-rear cover; 10-rear air pipe joint; 11-front air pipe joint. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0024] A gas flow rate signal collector for the air compressor of a rock drilling rig comprises a shell 1, an airway gland 2, a connecting shaft 3, a rotary encoder 4, and a central controller 5. The left and right ends of the shell 1 are connected to form an airflow channel; the connecting shaft 3 is arranged horizontally in front and back, and its front end passes through the shell 1 and enters the inside of the shell 1, and its rear end extends backward and is rotatably connected to the shell 1; the airway gland 2 is vertically arranged in the shell 1, and its top end is fixedly connected to the connecting shaft 3; the rotary encoder 4 is fixedly connected to the rear end of the rotating shaft and connected to the central controller 5. The gas enters from the left end of the shell 1, pushes the airway gland 2, and makes the airway gland 2 rotate based on the connection between the airway gland 2 and the connecting shaft 3, thereby driving the connecting shaft 3 to rotate, and the connecting shaft 3 drives the rotary encoder 4 to rotate, and the rotary encoder 4 generates a pulse signal when rotating, and then transmits the pulse signal to the central controller 5.

[0025] The connecting shaft 3 is rotatably connected to the housing 1 through a shaft seal cover 6. The connecting shaft 3 can be rotated on the housing 1 through the shaft seal cover 6, while ensuring sealing.

[0026] A sealing ring 7 is provided at the connection between the connecting shaft 3 and the shaft seal cover 6. The sealing ring 7 is provided to prevent gas leakage.

[0027] The rotary encoder 4 is connected to the rotating shaft via an elastic coupling 8. The rotary encoder 4 is driven to rotate by the elastic coupling 8, and the elastic coupling 8 can reduce the impact force generated by the rotation and prevent the rotary encoder 4 from being damaged.

[0028] The housing 1 further comprises a rear cover 9 which is fixedly connected to the left end of the housing 1 and has an air inlet.

[0029] It also includes a rear air pipe joint 10, which is fixedly connected to the air inlet of the rear cover 9. The rear air pipe joint 10 is connected to the air inlet pipe, and the air flow enters the rear air pipe joint 10 from the air inlet pipe and then enters the housing 1.

[0030] It also includes a front air pipe joint 11, which is fixedly connected to the right end of the housing 1. The front air pipe joint 11 is connected to the air outlet pipe, and the air flows out of the housing 1 and enters the air outlet pipe through the front air pipe joint 11.

[0031] The working mode of the utility model is:

[0032] The airflow enters the housing 1 from the rear air pipe joint 10, pushing the airway gland 2 to open. The airway gland 2 drives the connecting shaft 3 to rotate, and the connecting shaft 3 drives the rotary encoder 4 to rotate through the elastic coupling. The rotary encoder 4 generates a pulse signal when rotating.

[0033] The gas flow rate directly affects the opening of the airway gland 2, thereby changing the rotation angle of the connecting shaft 3 and the rotary encoder 4. When the gas flow rate is high, the airway gland 2 is subjected to a large thrust, the opening increases, and the rotation angle of the connecting shaft 3 and the rotary encoder 4 also increases accordingly. Conversely, when the gas flow rate is low, the opening of the airway gland 2 decreases, and the rotation angle of the connecting shaft 3 and the rotary encoder 4 also decreases accordingly.

[0034] The rotary encoder 4 generates corresponding pulse signals according to different rotation angles, and transmits these signals to the central controller 5. After receiving the pulse signals, the central controller 5 converts them into data, which can reflect the air flow rate in the air pipe, judge the drill bit slag discharge situation, and then perform normal drilling, reduce the propulsion pressure, withdraw the rod or stop drilling according to the drill bit slag discharge situation, so as to prevent the hole from being blocked due to poor drill bit slag discharge and reduce the loss of drill rod and drill bit.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A gas flow rate signal collector for a rock drilling rig air compressor trachea, comprising a housing, an airway gland, a connecting shaft, a rotary encoder, and a central controller, characterized in that: The left and right ends of the shell are connected to form an air flow channel; the connecting shaft is horizontally arranged front and back, its front end passes through the shell and enters the shell, and the rear end extends backward and is rotatably connected to the shell; the airway pressure cover is vertically arranged in the shell, and its top end is rotatably connected to the connecting shaft; the rotary encoder is fixedly connected to the rear end of the rotating shaft and is connected to the central controller.

2. The rock drilling rig air compressor air pipe gas flow rate signal collector according to claim 1, characterized in that: The connecting shaft is rotatably connected to the shell through a shaft sealing cover.

3. The rock drilling rig air compressor air pipe gas flow rate signal collector according to claim 2, characterized in that: A sealing ring is provided at the connection between the connecting shaft and the shaft sealing cover.

4. The rock drilling rig air compressor air pipe gas flow rate signal collector according to claim 1, characterized in that: The rotary encoder is connected to the rotating shaft via an elastic coupling.

5. The rock drilling rig air compressor air pipe gas flow rate signal collector according to claim 1, characterized in that: It also includes a back cover, which is fixedly connected to the left end of the shell body and has an air inlet.

6. The rock drilling rig air compressor air pipe gas flow rate signal collector according to claim 5, characterized in that: It also includes a rear air pipe joint; the rear air pipe joint is fixedly connected to the air inlet of the rear cover.

7. The rock drilling rig air compressor air pipe gas flow rate signal collector according to claim 1, characterized in that: It also includes a front air pipe joint; the front air pipe joint is fixedly connected to the right end of the shell.

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