Novel hydraulic chuck of coal mine drilling machine

Abstract

The utility model relates to the related technical field of coal mine drilling machines, in particular to a novel hydraulic chuck of a coal mine drilling machine, which comprises a chuck body, a clamping jaw is mounted on the chuck body, a sealing edge is arranged in the chuck body, a lubricating pad is mounted in the chuck body, a sealing mechanism is arranged in the chuck body, and the clamping jaw is mounted on the chuck body. And a limiting assembly is arranged in the clamping jaw. According to the novel hydraulic chuck of the coal mine drilling machine, through the arrangement of the first sealing plate, the first fixing plate, the bolts, the limiting plate, the second sealing plate, a sealing ring and a second fixing plate, the sealing performance of the chuck is improved, invasion of mud and chippings in the well drilling process is effectively prevented, and therefore the service life of the chuck is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine drilling machine, especially to a novel hydraulic chuck of coal mine drilling machine. BACKGROUND

[0002] The coal mine drilling machine is a complex machine, which is composed of a machine, a unit and a mechanism. The drilling machine is a mechanical equipment for driving drilling tools to drill into the ground during exploration or development of solid, liquid and gaseous minerals, etc. to obtain physical geological data. It is also called a drilling machine. Its main function is to drive drilling tools to break the rock at the bottom of the hole and to lower or raise the drilling tools in the hole. It can be used to drill rock cores, mineral cores, rock cuttings, gaseous samples and liquid samples to explore the underground geology and mineral resources.

[0003] The novel hydraulic chuck of the coal mine drilling machine on the market has the following problems during use:

[0004] 1. The traditional novel hydraulic chuck of the coal mine drilling machine has poor sealing performance during use, which can easily cause fluid leakage and affect the stability and safety of the drilling machine.

[0005] 2. The traditional novel hydraulic chuck of the coal mine drilling machine has insufficient durability in some harsh working environments, which can easily cause faults, increase maintenance costs and downtime, and the clamping force of the drilling tools is not stable enough during drilling operations, which can cause the drilling tools to deviate or be damaged, thereby affecting the drilling efficiency and drilling quality. Invention content

[0006] The utility model aims at providing a novel hydraulic chuck of a coal mine drilling machine to solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a novel hydraulic chuck of a coal mine drilling machine, comprising a chuck body, a clamping jaw installed on the chuck body, a sealing edge arranged in the chuck body, a lubricating pad installed in the chuck body, a sealing mechanism arranged in the chuck body, and a limiting assembly arranged in the clamping jaw.

[0008] The sealing mechanism comprises a first fixed plate, a first sealing plate, a bolt, a limiting plate, a second sealing plate, a sealing ring and a second fixed plate. The chuck body is provided with the first fixed plate. The first fixed plate is provided with the first sealing plate. The outer side wall of the first sealing plate is provided with the bolt. The outer wall of the first sealing plate is provided with the limiting plate. The outer wall of the limiting plate is provided with the second sealing plate. The outer wall of the second sealing plate is provided with the sealing ring. The inner wall of the second sealing plate is provided with the second fixed plate.

[0009] Preferably, the limiting assembly comprises a clamping groove, a spring and a fixed block, the outer wall of the clamping jaw is provided with a clamping groove, the spring is installed in the clamping groove, and the fixed block is fixed to one end of the spring.

[0010] Preferably, the inner wall of the first fixed plate is matched with the outer wall of the first sealing plate in size, and the outer wall of the first fixed plate is matched with the inner wall of the limiting plate in size.

[0011] Preferably, a plurality of bolts are arranged in a ring shape and are threadedly connected at equal intervals on the outer wall of the first sealing plate.

[0012] Preferably, a plurality of bolts are arranged on the outer wall of the limiting plate, and the second sealing plate is installed on the limiting plate through the bolts.

[0013] Preferably, a plurality of sealing rings are arranged, and the plurality of sealing rings are installed on the outer walls of the first sealing plate and the second sealing plate.

[0014] Preferably, the spring and the fixed block form an extension structure, the fixed block is provided with four fixed blocks, and the four fixed blocks are one-to-one corresponding to the positions of the clamping jaws.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The novel hydraulic chuck of the coal mine drilling machine improves the sealing performance of the chuck, effectively prevents the invasion of mud and debris in the drilling process, and prolongs the service life of the chuck.

[0017] 2. The novel hydraulic chuck of the coal mine drilling machine is provided with a clamping groove, a spring and a fixed block, so that the clamping jaw can flexibly extend and retract when subjected to external force, and the stability and reliability of the chuck under different drilling conditions are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall appearance structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the lubricating pad structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the sealing mechanism structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the limiting assembly structure of the utility model;

[0022] Figure 5 It is a schematic diagram of the exploded structure of the sealing mechanism of the utility model.

[0023] In the figure: 1, chuck body; 2, chuck jaw; 3, sealing edge; 4, lubricating pad; 5, sealing mechanism; 51, first fixed plate; 52, first sealing plate; 53, bolt; 54, limiting plate; 55, second sealing plate; 56, sealing ring; 57, second fixed plate; 6, limiting assembly; 61, clamping groove; 62, spring; 63, fixed block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figure 1 -5, the utility model provides a technical scheme: a new type of hydraulic chuck of coal mine drilling machine, including chuck body 1, chuck jaw 2 is installed on chuck body 1, the inside of chuck body 1 is provided with sealing edge 3, the inside of chuck body 1 is installed with lubricating pad 4, the inside of chuck body 1 is provided with sealing mechanism 5, the inside of chuck jaw 2 is provided with limiting assembly 6;

[0026] Sealing mechanism 5 includes first fixed plate 51, first sealing plate 52, bolt 53, limiting plate 54, second sealing plate 55, sealing ring 56 and second fixed plate 57, the inside of chuck body 1 is provided with first fixed plate 51, first sealing plate 52 is installed in the inside of first fixed plate 51, bolt 53 is installed on the outside wall of first sealing plate 52, limiting plate 54 is installed on the outer wall of first sealing plate 52, second sealing plate 55 is installed on the outer wall of limiting plate 54, sealing ring 56 is provided on the outer wall of second sealing plate 55, second fixed plate 57 is installed on the inner wall of second sealing plate 55, by the setting of first fixed plate 51, first sealing plate 52, bolt 53, limiting plate 54, second sealing plate 55, sealing ring 56 and second fixed plate 57, when using hydraulic chuck, first when hydraulic pressure acts on chuck body 1, so that chuck jaw 2 can tightly hold drill tool, guarantee the stability and safety of drilling operation, the setting of sealing mechanism 5 ensures that the durability of hydraulic chuck is improved under the harsh working environment, reduces the probability of failure occurrence, thereby reducing maintenance cost and reducing downtime, first fixed plate 51 can be tightly matched with the inner wall of chuck body 1, guarantee the sealing performance of sealing edge 3, effectively prevent fluid leakage, at the same time, the setting of lubricating pad 4 reduces the friction between chuck body 1 and chuck jaw 2, prolongs the service life of equipment.

[0027] Further, the limiting assembly 6 comprises a clamping groove 61, a spring 62 and a fixed block 63, the outer wall of the clamping jaw 2 is provided with the clamping groove 61, the inside of the clamping groove 61 is provided with the spring 62, one end of the spring 62 is fixed with the fixed block 63, through the setting of the clamping groove 61, the spring 62 and the fixed block 63, the clamping jaw 2 can be kept stable when subjected to external force, the extension and contraction performance of the spring 62 allows the clamping jaw 2 to have a certain elasticity when clamping the drill tool, so as to adapt to drill tools of different sizes, ensure the uniformity and stability of the clamping force, and the fixed block 63 ensures the correct position of the spring 62 in the clamping groove 61, prevents displacement of the spring 62 during work, and further improves the positioning accuracy and clamping reliability of the clamping jaw 2.

[0028] Further, the inner wall size of the first fixed plate 51 matches the outer wall size of the first sealing plate 52, the outer wall size of the first fixed plate 51 matches the inner wall size of the limiting plate 54, through the setting of the first fixed plate 51, the stability and sealing effect of the sealing mechanism 5 are ensured, and at the same time, the setting of the limiting plate 54 enables the second sealing plate 55 to be accurately positioned, avoiding misplacement of the sealing ring 56, thereby ensuring the reliability of the sealing.

[0029] Further, the plurality of bolts 53 are annularly and equidistantly threadedly connected to the outer wall of the first sealing plate 52, through the setting of the bolts 53, the tight connection between the first sealing plate 52 and the first fixed plate 51 is ensured, the overall structural strength of the sealing mechanism 5 is enhanced, and the sealing performance is maintained in a good state under high-pressure environment.

[0030] Further, the plurality of bolts 53 are respectively installed on the outer wall of the limiting plate 54, and the second sealing plate 52 is installed on the limiting plate 54 through the bolts 53, through the setting of the limiting plate 54, a stable connection is formed between the second sealing plate 55 and the limiting plate 54, the structural stability of the sealing mechanism 5 is enhanced, and the second sealing plate 55 can maintain a good sealing effect even in a harsh working environment during drilling operation, preventing fluid leakage.

[0031] Further, the plurality of sealing rings 56 are respectively installed on the outer walls of the first sealing plate 51 and the second sealing plate 52, through the setting of the sealing rings 56, the sealing performance is further improved, the sealing effect of the hydraulic chuck is ensured under various working conditions, fluid leakage is prevented, and the setting of the plurality of sealing rings 56 makes the sealing effect more reliable, even in a long period of use, a good sealing state can be maintained, and equipment failure and maintenance cost loss caused by sealing failure are avoided.

[0032] Further, the spring 62 and the fixed block 63 constitute a telescopic structure, the fixed block 63 is provided with four, and corresponds to the position of the claw 2 one by one, through the setting of the fixed block 63, the claw 2 can keep stable when subjected to external force, the telescopic performance of the spring 62 allows the claw 2 to have a certain elasticity when clamping the drill, so as to adapt to different sizes of drill, ensure the uniformity and stability of clamping force.

[0033] Working principle: when using the hydraulic chuck, first, when the hydraulic pressure acts on the chuck body 1, the claw 2 can tightly clamp the drill, ensure the stability and safety of drilling operation, the setting of the sealing mechanism 5 ensures that the durability of the hydraulic chuck is improved in harsh working environment, reduces the probability of failure, thereby reducing the maintenance cost and reducing the downtime, the first fixed plate 51 can be closely matched with the inner wall of the chuck body 1, ensure the sealing performance of the sealing edge 3, effectively prevent fluid leakage, at the same time, the setting of the lubricating pad 4 reduces the friction between the chuck body 1 and the claw 2, prolongs the service life of the equipment, through the setting of the clamping groove 61, the spring 62 and the fixed block 63, the claw 2 can keep stable when subjected to external force, the telescopic performance of the spring 62 allows the claw 2 to have a certain elasticity when clamping the drill, so as to adapt to different sizes of drill, ensure the uniformity and stability of clamping force, the fixed block 63 ensures the correct position of the spring 62 in the clamping groove 61, prevents displacement in work, further improves the positioning accuracy and clamping reliability of the claw 2, through the setting of the first fixed plate 51, the stability and sealing effect of the sealing mechanism 5 are ensured, at the same time, the setting of the limiting plate 54 makes the second sealing plate 55 accurately positioned, avoids the misplacement of the sealing ring 56, so as to ensure the reliability of sealing, through the setting of the bolt 53, the close connection between the first sealing plate 52 and the first fixed plate 51 is ensured, the overall structural strength of the sealing mechanism 5 is enhanced, so that it can also maintain good sealing performance in high pressure environment, through the setting of the limiting plate 54, the second sealing plate 55 and the limiting plate 54 form a stable connection, the structural stability of the sealing mechanism 5 is enhanced, ensures that the second sealing plate 55 can maintain good sealing effect in drilling operation even in harsh working environment, prevents fluid leakage, through the setting of the sealing ring 56, the sealing performance is further improved, ensures the sealing effect of the hydraulic chuck in various working conditions, prevents fluid leakage, the setting of multiple sealing rings 56 makes the sealing effect more reliable, even in the process of long time use, it can also maintain good sealing state, avoids the equipment failure and maintenance cost loss caused by sealing failure, through the setting of the fixed block 63, the claw 2 can keep stable when subjected to external force, the telescopic performance of the spring 62 allows the claw 2 to have a certain elasticity when clamping the drill, so as to adapt to different sizes of drill, ensure the uniformity and stability of clamping force.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new hydraulic chuck for a coal mine drill, comprising a chuck body (1), characterized in that: A clamping claw (2) is installed on the chuck body (1), a sealing edge (3) is provided inside the chuck body (1), a lubricating pad (4) is installed inside the chuck body (1), a sealing mechanism (5) is provided inside the chuck body (1), and a limiting assembly (6) is provided inside the clamping claw (2); The sealing mechanism (5) comprises a first fixing plate (51), a first sealing plate (52), a bolt (53), a limiting plate (54), a second sealing plate (55), a sealing ring (56) and a second fixing plate (57). The first fixing plate (51) is provided inside the chuck body (1), the first sealing plate (52) is installed inside the first fixing plate (51), the bolt (53) is installed on the outer wall of the first sealing plate (52), the limiting plate (54) is installed on the outer wall of the first sealing plate (52), the second sealing plate (55) is installed on the outer wall of the limiting plate (54), the sealing ring (56) is provided on the outer wall of the second sealing plate (55), and the second fixing plate (57) is installed on the inner wall of the second sealing plate (55).

2. The new hydraulic chuck for coal mine drilling rig according to claim 1 is characterized by: The limiting assembly (6) comprises a slot (61), a spring (62) and a fixed block (63); the outer wall of the claw (2) is provided with a slot (61); a spring (62) is installed inside the slot (61); and one end of the spring (62) is fixed with a fixed block (63).

3. The new hydraulic chuck for coal mine drilling rig according to claim 1 is characterized by: The inner wall size of the first fixing plate (51) matches the outer wall size of the first sealing plate (52), and the outer wall size of the first fixing plate (51) matches the inner wall size of the limiting plate (54).

4. The new hydraulic chuck for coal mine drilling rig according to claim 1 is characterized by: A plurality of bolts (53) are provided and are threadedly connected to the outer wall of the first sealing plate (52) in an annular and equidistant manner.

5. The new hydraulic chuck for coal mine drilling rig according to claim 1 is characterized by: The plurality of bolts (53) are respectively mounted on the outer wall of the limiting plate (54), and the second sealing plate (55) is mounted on the limiting plate (54) via the bolts (53).

6. The new hydraulic chuck for coal mine drilling rig according to claim 1 is characterized by: A plurality of sealing rings (56) are provided, and the plurality of sealing rings (56) are respectively mounted on the outer walls of the first sealing plate (52) and the second sealing plate (55).

7. The new hydraulic chuck for coal mine drilling rig according to claim 2 is characterized by: The spring (62) and the fixed block (63) form a telescopic structure. Four fixed blocks (63) are provided and correspond one to one with the positions of the claws (2).

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