Silent drilling barrel for construction of rotary drilling rig and noise reduction assembly of rotary drilling rig

Abstract

The utility model provides a mute drilling barrel for construction of a rotary drilling rig and a noise reduction assembly of the rotary drilling rig. The mute drilling barrel for construction of the rotary drilling rig comprises a drilling barrel body, a top plate, a pushing plate and a pushing assembly. A drill bit is arranged at the bottom of the drill barrel main body; the top plate is fixedly arranged at an opening in the top of the drill barrel main body, and an exhaust hole is formed in the top plate; the pushing plate is arranged in the drilling barrel main body in a sliding manner; the pushing assembly comprises a plurality of lifting rods penetrating through the top plate, the bottoms of the lifting rods are connected with the upper surface of the pushing plate, and the lifting rods can move in the vertical direction. According to the silent drilling barrel for construction of the rotary drilling rig, the piston plate is arranged in the drilling barrel, a conventional soil throwing mode is changed, the lifting rod moves downwards, the pushing plate is extruded to move downwards, muck left in the drilling barrel is pushed out of the drilling barrel body, forward and reverse swinging of a drilling rod is not needed in the whole process, noise cannot be generated, and the construction efficiency is improved. And the influence on the surrounding environment is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary drilling, and in particular relates to a silent drill barrel for rotary drilling rig construction and a noise reduction assembly of the rotary drilling rig. Background Art

[0002] Rotary drilling is a construction technology suitable for hole-forming operations in building foundation projects. It is widely used in foundation construction projects such as municipal construction, highway bridges, and high-rise buildings.

[0003] Existing rotary drilling rigs often use a forward and reverse rotating drill rod to drive the drill bit to rotate and throw out the debris when discharging. However, it is difficult to remove sticky soil by using the shaking method. Sticky soil has strong adsorption properties and is easily accumulated in the drill barrel, resulting in a low soil discharge efficiency of the drill barrel. During the frequent shaking process, the drill rod will emit a large noise, affecting the surrounding environment, especially in urban construction, affecting the normal life of surrounding residents. Utility Model Content

[0004] The embodiment of the utility model provides a silent drill barrel for rotary drilling rig construction and a noise reduction assembly for rotary drilling rig, aiming to solve the technical problem in the prior art that the rotary drilling bit makes a large noise when discharging soil, affects the surrounding environment, and is difficult to discharge clay soil.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a silent drill barrel for rotary drilling rig construction is provided, comprising:

[0007] The drill barrel body has an open top and a drill bit at the bottom;

[0008] A top plate is fixed to the opening at the top of the drill tube body, and an exhaust hole is opened on the top plate;

[0009] a push plate slidably disposed inside the drill barrel body, the push plate dividing the inner cavity of the drill barrel body into a transition cavity and a soil discharge cavity distributed along the axial direction of the drill barrel body, the transition cavity being communicated with the exhaust hole; and

[0010] The pushing assembly includes a plurality of lifting rods respectively penetrating the top plate, the bottoms of the plurality of lifting rods are respectively connected to the upper surface of the pushing plate, and the plurality of lifting rods are evenly distributed around the central axis of the pushing plate, and the lifting rods can move in the up and down directions.

[0011] In combination with the first aspect, in a possible implementation, a plurality of limiting cylinders are further provided on the top plate, the limiting cylinders correspond to the lifting rods one-to-one, the lifting rods slide in cooperation with the limiting cylinders and limit the displacement of the lifting rods in the horizontal direction.

[0012] In combination with the first aspect, in a possible implementation, a square-headed reinforcing rib plate is provided at the center of the upper surface of the top plate.

[0013] In combination with the first aspect, in a possible implementation, the pushing assembly further includes a pressure plate, which is an annular structure, and the pressure plate is disposed on top of the plurality of lifting rods and is respectively connected to the plurality of lifting rods.

[0014] In combination with the first aspect, in a possible implementation, a plurality of arc-shaped wear-resistant strips that fit closely to the outer wall of the drill barrel body are provided on the outer wall of the drill barrel body.

[0015] In combination with the first aspect, in a possible implementation, sleeves are respectively provided at the bottom of the pressure plate corresponding to the multiple lifting rods, and the sleeves are slidably inserted into the tops of the corresponding lifting rods. The pushing assembly also includes an elastic member, which is sleeved on the outer periphery of the lifting rods and the sleeves, and the two ends of the elastic member are respectively connected to the pressure plate and the top plate.

[0016] In combination with the first aspect, in one possible implementation, the edge of the drill bit is hinged to the bottom of the drill barrel body, and the hinge axis is perpendicular to the up-down direction, and a locking block is provided at one end of the drill bit away from the hinge.

[0017] The side of the top plate is provided with an avoidance groove which runs through from top to bottom;

[0018] The silent drill barrel for rotary drilling rig construction also includes a linkage assembly, which includes a trigger rod and a transmission rod. The top end of the transmission rod is hinged to the inner wall of the avoidance groove, and the hinge axis is parallel to the hinge axis of the drill bit and the drill barrel body. The bottom end of the transmission rod is connected to a fixed block, and the fixed block is adapted to the locking block; the bottom end of the trigger rod abuts against the top of the transmission rod, and the top of the trigger rod is connected to the bottom of the pressure plate. The trigger rod is a telescopic rod.

[0019] In combination with the first aspect, in a possible implementation, the trigger rod includes a lifting sleeve, an abutment rod and a reset member, the top of the lifting sleeve is connected to the pressure plate, the bottom end of the lifting sleeve is open, the top of the abutment rod is slidably arranged inside the lifting sleeve, the reset member is arranged inside the lifting sleeve, and its two ends respectively abut the lifting sleeve and the abutment rod, and the reset member is configured with a pre-tightening force that pushes the abutment rod downward to disengage from the lifting sleeve.

[0020] The utility model provides a rotary drilling rig construction silent drill barrel. Compared with the existing technology, a piston plate is arranged in the drill barrel, which changes the conventional soil-shaking method. The lifting rod moves downward, squeezing the push plate to move downward, and the debris left in the drill barrel is pushed out of the drill barrel body. The whole process does not require the forward and reverse swinging of the drill rod, and no noise is generated, which greatly reduces the impact on the surrounding environment; the push plate directly pushes the debris downward, directly pushing out the sticky soil, thereby improving the cleaning efficiency; the debris is pushed out by the push plate and will not spread, and the debris is concentrated in a fixed area, which increases the convenience of debris collection and is beneficial to debris treatment.

[0021] In a second aspect, a rotary drilling rig noise reduction assembly is provided, comprising:

[0022] A silent drill barrel for rotary drilling rig construction as in any of the above possible implementations; and

[0023] A collecting cover is provided on the ground, a collecting space is formed inside the collecting cover, and the silent drill barrel of the rotary drilling rig is placed in the collecting space.

[0024] In combination with the second aspect, in a possible implementation, the collection cover includes four groups of sound insulation panels and a top plate, the four groups of sound insulation panels enclose a rectangular space with an open top, the top plate cover is arranged at the opening of the rectangular space, and the top plate and the four groups of sound insulation panels enclose the collection space; the sound insulation panels are provided with an escape opening for accommodating the silent drill barrel of the rotary drilling rig.

[0025] The noise reduction assembly of the rotary drilling rig provided by the utility model, compared with the existing technology, is provided with a piston plate in the drill barrel, which changes the conventional soil-throwing method. The lifting rod moves downward, squeezing the push plate to move downward, and the debris left in the drill barrel is pushed out of the drill barrel body. The whole process does not require the forward and reverse swinging of the drill rod, and no noise is generated, which greatly reduces the impact on the surrounding environment. The debris is pushed out by the push plate and will not spread. The debris is concentrated in the collection cover, which increases the convenience of debris collection and is beneficial to debris treatment. The collection cover forms a refraction space, which further processes the noise generated during the soil discharge process and improves the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a silent drill barrel for rotary drilling rig construction provided by an embodiment of the present invention;

[0028] Figure 2 for Figure 1 sectional view of ;

[0029] Figure 3 This is a cross-sectional view of a collection hood used in yet another embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Drill barrel body; 11. Transition chamber; 12. Soil drainage chamber;

[0032] 2. Drill bit; 21. Locking block;

[0033] 3. Top plate; 31. Exhaust hole; 32. Square head reinforcement plate;

[0034] 4. Push plate;

[0035] 5. Pushing assembly; 51. Lifting rod; 52. Limiting cylinder; 53. Pressure plate; 531. Sleeve;

[0036] 6. Linkage assembly; 61. Trigger rod; 611. Lifting sleeve; 612. Abutment rod; 613. Reset member; 62. Transmission rod; 621. Fixing block;

[0037] 7. Collection hood; 71. Sound insulation board; 72. Top plate; 721. Avoidance. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] It should be noted that the terms "length," "width," "height," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "head," and "tail" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the utility model. The directional terms "inside" and "outside" refer to the inside and outside relative to the outline of the component itself.

[0042] It should also be noted that, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," "fixed," and "set" should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and may encompass internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Furthermore, "plurality" and "several" mean two or more, unless otherwise specifically defined.

[0044] Please also refer to Figures 1 to 3, the silent drill barrel for rotary drilling rig construction provided by the present invention is now described. The silent drill barrel for rotary drilling rig construction includes a drill barrel body 1, a top plate 3, a push plate 4 and a push assembly 5. The top of the drill barrel body 1 is open, and a drill bit 2 is provided at the bottom; the top plate 3 is fixed at the opening at the top of the drill barrel body 1, and an exhaust hole 31 is provided on the top plate 3; the push plate 4 is slidably arranged inside the drill barrel body 1, and the push plate 4 divides the inner cavity of the drill barrel body 1 into a transition cavity 11 and a soil discharge cavity 12 distributed along the axial direction of the drill barrel body 1, and the transition cavity 11 is connected to the exhaust hole 31; the push assembly 5 includes a plurality of lifting rods 51 respectively passing through the top plate 3, and the bottoms of the plurality of lifting rods 51 are respectively connected to the upper surface of the push plate 4, and the plurality of lifting rods 51 are evenly distributed around the central axis of the push plate 4, and the lifting rods 51 can move in the up and down directions.

[0045] It should be noted that the drill bit 2 has an inlet and outlet passage communicating with the drill barrel body 1. During the drilling process, the debris is stored in the drill barrel body 1 from the inlet and outlet passage. The drill bit 2 is a drill bit in the prior art.

[0046] The rotary drilling rig provided in this embodiment provides a silent drill barrel for construction. Compared with the prior art, a piston plate is arranged in the drill barrel, which changes the conventional soil-throwing method. The lifting rod 51 moves downward, squeezing the push plate 4 to move downward, and the debris remaining in the drill barrel is pushed out of the drill barrel main body 1. The entire process does not require the forward and reverse swinging of the drill rod, and no noise is generated, which greatly reduces the impact on the surrounding environment; the push plate 4 directly pushes the debris downward, directly pushing out the clay soil, thereby improving the cleaning efficiency; the debris is pushed out by the push plate 4 and will not spread. The debris is concentrated in a fixed area, which increases the convenience of debris collection and is beneficial to debris treatment.

[0047] In some embodiments, see Figure 1 The top plate 3 is also provided with a plurality of limiting cylinders 52, which correspond one to one with the lifting rods 51. The lifting rods 51 slide in conjunction with the limiting cylinders 52 and limit the horizontal displacement of the lifting rods 51. The limiting cylinders 52 ensure that the lifting rods 51 always move in the vertical direction, protecting the lifting rods 51 and preventing them from deviating from their trajectory during lifting and lowering, which could cause damage to the lifting rods 51.

[0048] In some embodiments, see Figure 1 , a square head reinforcing rib plate 32 is provided at the center of the upper surface of the top plate 3. The square head reinforcing rib plate 32 can be connected to the drill pipe to increase the connection strength.

[0049] In specific implementation, the square head reinforcement rib plate 32 includes a square head of a square tubular structure composed of four rib plates, four outer rib plates distributed on the outer periphery of the square head and fixedly connected to the corners of the square head, and four L-shaped clamps fixed to the top of the square head. The four L-shaped clamps are tightly connected to the four corners of the top of the square head. The bottom ends of the square head and the outer rib plates are fixed on the top plate 3, and a square opening connected to the square head is provided on the top plate 3.

[0050] In some embodiments, see Figure 1 and Figure 2 The pushing assembly 5 also includes a pressure plate 53, which is an annular structure and is mounted on top of and connected to the multiple lifting rods 51. The pressure plate 53 can simultaneously drive the multiple lifting rods 51 up and down, ensuring that the surface of the pushing plate 4 is always perpendicular to the vertical direction, thereby improving the stability of slag discharge. The annular pressure plate 53 can avoid the square head reinforcement plate 32 during movement.

[0051] In some embodiments, a plurality of arc-shaped wear-resistant strips are provided on the outer wall of the drill barrel body 1, which fit the outer wall of the drill barrel body 1. The arc-shaped wear-resistant strips can increase the strength of the drill barrel body 1 and extend the service life of the drill barrel body 1.

[0052] In some embodiments, see Figure 1 The bottom of the pressure plate 53 is provided with sleeves 531 corresponding to the multiple lifting rods 51. The sleeves 531 are slidably connected to the tops of the corresponding lifting rods 51. The pushing assembly 5 also includes an elastic member, which is sleeved around the outer periphery of the lifting rods 51 and the sleeves 531. The ends of the elastic member are respectively connected to the pressure plate 53 and the top plate 3. The elastic member is compressed when the lifting rods 51 descend. When the soil discharge operation is completed, the elastic member automatically resets, driving the pressure plate 53 to reset, and then driving the pushing plate 4 to rise, facilitating the subsequent drilling operation of the drill barrel body 1.

[0053] Optionally, the elastic member adopts a spring, which has high strength and good deformation continuity to meet the use requirements. A tower spring can also be used as long as it can drive the pressure plate 53 to move up and reset. No more examples are given here.

[0054] In some embodiments, a limiting ring is provided at the bottom of the sleeve 531, and a limiting block is provided at the top of the lifting rod 51. The limiting block slides within the sleeve 531, and the limiting ring abuts against the limiting block to limit the limiting block's downward travel. The cooperation between the limiting ring and the limiting block prevents the lifting rod 51 from separating from the sleeve 531, ensuring that the pressure plate 53 and the lifting rod 51 are always connected, and that the lifting rod 51 can be driven up and down by the pressure plate 53.

[0055] In some embodiments, see Figure 2The edge of the drill bit 2 is hinged to the bottom of the drill barrel body 1, and the hinge axis is perpendicular to the up and down direction. A locking block 21 is provided at the end of the drill bit 2 away from the hinge; an avoidance groove running through the top and bottom is opened on the side of the top plate 3; the silent drill barrel for rotary drilling rig construction also includes a linkage assembly 6, which includes a trigger rod 61 and a transmission rod 62. The top of the transmission rod 62 is hinged to the inner wall of the avoidance groove, and the hinge axis is parallel to the hinge axis of the drill bit 2 and the drill barrel body 1. The bottom end of the transmission rod 62 is connected with a fixed block 621, which is adapted to the locking block 21; the bottom end of the trigger rod 61 abuts against the top of the transmission rod 62, and the top of the trigger rod 61 is connected to the bottom of the pressure plate 53. The trigger rod 61 is a telescopic rod.

[0056] It should be noted that the pressure plate 53 has a sliding hole corresponding to the trigger rod 61 , and the top of the trigger rod 61 slides in the sliding hole. In the squeezed state, the top of the trigger rod 61 is flush with the upper surface of the pressure plate 53 .

[0057] It should be noted that, in the drilling state, the fixing block 621 and the locking block 21 are locked, so that the drill bit 2 is fixed on the drill barrel body 1, ensuring stability during use; when the other end of the trigger rod 61 is subjected to external force, the fixing block 621 releases the fixation of the locking block 21, so that the drill bit 2 can rotate, thereby increasing the area of ​​the slag discharge port.

[0058] This embodiment provides a linkage assembly 6, the trigger rod 61 is first compressed, the trigger rod 61 pushes the top of the transmission rod 62, and the transmission rod 62, under the action of the trigger rod 61, releases the lock of the fixing block 621 by the pressure block 51, and can open the drill bit 2 before the pressure plate 53 descends, making it convenient to push the plate 4 downward to push the slag. The drill bit 2 is opened, and the soil discharge cavity 12 is connected to the outside world, thereby improving the convenience of slag discharge.

[0059] In some embodiments, see Figure 2 The trigger rod 61 includes a lifting sleeve 611, an abutting rod 612, and a reset member 613. The top of the lifting sleeve 611 is connected to the pressure plate 53, and the bottom end is open. The top of the abutting rod 612 is slidably arranged inside the lifting sleeve 611. The reset member 613 is arranged inside the lifting sleeve 611, and its two ends respectively abut the lifting sleeve 611 and the abutting rod 612. The reset member 613 is configured with a pre-tightening force to push the abutting rod 612 downward to separate from the lifting sleeve 611. The lifting sleeve 611 is squeezed and moved downward, and the reset member 613 is squeezed, pushing the abutting rod 612 downward. The bottom end of the abutting rod 612 acts on the transmission rod 62, so that the fixed block 621 and the locking block 21 are unlocked; the pressure plate 53 continues to move downward, the lifting sleeve 611 slides downward, and the trigger rod 61 is shortened as a whole, so that the pressure plate 53 can drive the lifting rod 51 to descend.

[0060] Specifically, the reset member 613 is a coil spring.

[0061] The usage process of this embodiment is as follows: after the drill barrel main body 1 is taken out from the drill hole, the pressure plate 53 moves downward, the lifting sleeve 611 and the sleeve 531 descend, and before the sleeve 531 abuts against the lifting rod 51 inside the sleeve 531, the lifting sleeve 611 with the reset member 613 is compressed, and the abutment rod 612 applies a force downward to the top of the transmission rod 62, and the fixed block 621 and the locking block 21 at the bottom end of the transmission rod 62 are unlocked, and the drill bit 2 is opened; the pressure plate 53 continues to move downward, the sleeve 531 abuts against the lifting rod 51, the pressure plate 53 drives the lifting rod 51 to move downward, and the lifting rod 51 drives the push plate 4 to descend, and the push plate 4 pushes the slag out of the drill barrel main body 1 to achieve slag discharge.

[0062] As another embodiment of the trigger rod 61, the trigger rod 61 includes a striking rod, a guide rod and a moving ring. The striking rod is located at the top of the transmission rod 62, the guide rod is arranged at the top of the striking rod, the moving ring is slidably sleeved on the guide rod, a moving cylinder is provided on the top of the moving ring, the interior of the moving cylinder is slidably connected to the top of the guide rod, a first spring and a second spring are sleeved on the surface of the guide rod, one end of the first spring is fixedly connected to the bottom of the moving ring, the other end of the first spring is fixedly connected to the top of the striking column, one end of the second spring is fixedly connected to the bottom of the moving cylinder, and the other end of the second spring is fixedly connected to the top of the moving ring.

[0063] Based on the same inventive concept, see Figure 3 The present application also provides a rotary drilling rig noise reduction assembly, comprising a rotary drilling rig construction silent drill barrel as in any of the above embodiments and a collection cover 7. The collection cover 7 is arranged on the ground, and a collection space is formed inside the collection cover 7. The rotary drilling rig construction silent drill barrel is placed in the collection space.

[0064] Compared with the prior art, the rotary drilling rig noise reduction assembly provided in this embodiment has a piston plate arranged in the drill barrel, which changes the conventional soil-throwing method. The lifting rod 51 moves downward, squeezing the push plate 4 to move downward, and the debris remaining in the drill barrel is pushed out of the drill barrel main body 1. The entire process does not require the forward and reverse swinging of the drill rod, and no noise is generated, which greatly reduces the impact on the surrounding environment. The debris is pushed out by the push plate 4 and will not spread. The debris is concentrated in the collection cover 7, which increases the convenience of debris collection and is beneficial to debris treatment; the collection cover 7 forms a refraction space, which further processes the noise generated during the soil discharge process and improves the noise reduction effect.

[0065] In some embodiments, see Figure 3The collection hood 7 includes four sets of sound insulation panels 71 and a top panel 72. The four sets of sound insulation panels 71 enclose a rectangular space with an open top. The top panel 72 covers the opening of the rectangular space. The top panel 72 and the four sets of sound insulation panels 71 together form a collection space. The sound insulation panels 71 have a relief opening 721 for accommodating the silent drill barrel used in rotary drilling rig construction. The sound insulation panels 71 absorb noise and, together with the silent drill barrel, provide dual noise reduction, minimizing the impact on the environment during use. The relief opening 721 facilitates the insertion of the drill barrel body 1, making it easier to move the drill barrel body 1.

[0066] In specific implementation, the sound insulation board 71 is made of mineral wool board or glass fiber board, as long as it can absorb noise.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A silent drill barrel for rotary drilling rig construction, characterized in that: include: The drill barrel body has an open top and a drill bit at the bottom; A top plate is fixed to the opening at the top of the drill tube body, and an exhaust hole is opened on the top plate; a push plate slidably disposed inside the drill barrel body, the push plate dividing the inner cavity of the drill barrel body into a transition cavity and a soil discharge cavity distributed along the axial direction of the drill barrel body, the transition cavity being communicated with the exhaust hole; and A pushing assembly, comprising a plurality of lifting rods respectively penetrating the top plate, wherein the bottoms of the plurality of lifting rods are respectively connected to the upper surface of the pushing plate, and the plurality of lifting rods are evenly distributed around the central axis of the pushing plate, and the lifting rods can move in the up and down directions; The pushing assembly further includes a pressure plate, which is an annular structure and is disposed on top of the plurality of lifting rods and is respectively connected to the plurality of lifting rods; The edge of the drill bit is hinged to the bottom of the drill barrel body, and the hinge axis is perpendicular to the up and down direction. A locking block is provided at one end of the drill bit away from the hinge. The side of the top plate is provided with an avoidance groove which runs through from top to bottom; The silent drill barrel for rotary drilling rig construction also includes a linkage assembly, which includes a trigger rod and a transmission rod. The top end of the transmission rod is hinged to the inner wall of the avoidance groove, and the hinge axis is parallel to the hinge axis of the drill bit and the drill barrel body. The bottom end of the transmission rod is connected to a fixed block, and the fixed block is adapted to the locking block; the bottom end of the trigger rod abuts against the top of the transmission rod, and the top of the trigger rod is connected to the bottom of the pressure plate. The trigger rod is a telescopic rod.

2. The silent drill barrel for rotary drilling rig construction as claimed in claim 1, characterized in that: The top plate is further provided with a plurality of limiting cylinders, which correspond to the lifting rods one by one. The lifting rods slide in cooperation with the limiting cylinders and limit the displacement of the lifting rods in the horizontal direction.

3. The silent drill barrel for rotary drilling rig construction as claimed in claim 1, characterized in that: A square head reinforcing rib plate is provided at the center of the upper surface of the top plate.

4. The silent drill barrel for rotary drilling rig construction as claimed in claim 1, characterized in that: A plurality of arc-shaped wear-resistant strips are provided on the outer wall of the drill barrel body and are in contact with the outer wall of the drill barrel body.

5. The silent drill barrel for rotary drilling rig construction as claimed in claim 4, characterized in that: The bottom of the pressure plate is provided with sleeves corresponding to the multiple lifting rods, and the sleeves are slidably inserted into the tops of the corresponding lifting rods. The pushing assembly also includes an elastic member, which is sleeved on the outer periphery of the lifting rods and the sleeves, and the two ends of the elastic member are respectively connected to the pressure plate and the top plate.

6. The silent drill barrel for rotary drilling rig construction as claimed in claim 1, characterized in that: The trigger rod includes a lifting sleeve, an abutment rod and a reset member. The top of the lifting sleeve is connected to the pressure plate, and the bottom end of the lifting sleeve is open. The top of the abutment rod is slidably arranged inside the lifting sleeve. The reset member is arranged inside the lifting sleeve, and its two ends respectively abut the lifting sleeve and the abutment rod. The reset member is configured with a pre-tightening force that pushes the abutment rod downward to separate from the lifting sleeve.

7. A rotary drilling rig noise reduction assembly, characterized in that: include: A silent drill barrel for rotary drilling rig construction according to any one of claims 1 to 6; as well as A collecting cover is provided on the ground, a collecting space is formed inside the collecting cover, and the silent drill barrel of the rotary drilling rig is placed in the collecting space.

8. The rotary drilling rig noise reduction assembly according to claim 7, characterized in that: The collecting cover includes four groups of sound insulation panels and a top plate. The four groups of sound insulation panels enclose a rectangular space with an open top. The top plate cover is arranged at the opening of the rectangular space. The top plate and the four groups of sound insulation panels enclose the collecting space. The sound insulation panels are provided with an escape opening for accommodating the silent drill barrel of the rotary drilling rig.

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