CN116378570A - Hole opening reaming device for gas extraction drilling - Google Patents

Abstract

The invention discloses a hole opening reaming device for gas extraction drilling, which relates to the technical field of gas extraction, and comprises: a seal for engaging the inner wall of the hole; a collecting cover connected to the sealing member for collecting chips generated during reaming; the sealing piece comprises a fixing ring and an air cushion ring sleeved outside the fixing ring, and the fixing ring is attached to the inner wall of the hole through the air cushion ring. According to the gas extraction drilling hole orifice reaming device, the air cushion ring is adopted to block the gap between the collecting cover and the inner wall of the hole orifice, and the air cushion ring is sleeved outside the fixing ring, so that the fixing ring does not rub against the inner wall of the hole orifice, the technical problem that the existing gas extraction hole orifice reaming device is poor in safety when in use is effectively solved, further, the hole orifice is sealed, leakage of gas during reaming is prevented, and therefore the safety during reaming is improved.

Description

Gas Drainage Borehole Reaming Device

technical field

The invention relates to the technical field of gas drainage, in particular to a gas drainage drilling orifice reaming device.

Background technique

Gas can be seen everywhere in people's daily life. For example, gas is needed in food cooking and industrial manufacturing, so people need to extract gas to supply daily needs and industrial purposes.

Gas generally exists in the underground or in the confined space inside the mountain. When it is extracted, it is necessary to drill holes in the area with gas so that people can extract the gas. The existing technology is to use the driver to drive the drill to drill holes to release the gas. , in the actual work, the drilling size of the gas drainage area needs to be determined according to the site conditions. Due to the different drilling size requirements, it is very inconvenient to frequently replace the drilling bits.

At present, the existing patent with the patent publication number CN218150760U discloses a reaming drill bit capable of adjusting the size of the drilling area to increase the concentration of gas drainage, including a drill bit, a connecting frame, a mounting piece and a reaming mechanism, and the drill bit The upper part is connected with a connecting frame, and the upper part of the connecting frame is connected with a mounting piece, which is used for an external drive, and the rotation of the mounting piece will drive the drill bit and the connecting frame to rotate together, and the mounting frame is provided with a reaming mechanism for expanding the punching area. By adjusting the adjustment of the reaming frame, people can better adjust the size of the punched hole, and when holes of different sizes are required, it is not necessary to frequently replace the drill bit to improve the drilling efficiency.

The existing patent whose patent publication number is CN114837566A discloses a kind of helical gear cone bit, which comprises a drill rod; the drill rod is respectively provided with a guide device and a rock-breaking reaming device; body; the first roller cone cutting assembly is rotatably installed on the center body; the rock breaking and reaming device includes a drill bit seat rotatably installed on the drill rod; the second wheel cone cutting assembly is rotatably installed on the drill bit seat; the drill bit seat and The gear discs are connected to each other by the first cone cutting components; the gear discs are rotatably mounted on the drill rod, are fixedly connected with the drill bit seat, and meshed with the first cone cutting components. By installing the relatively rotatable first cone cutting assembly on the center body, it can not only rotate on its own, but also revolve relative to the drill pipe through the center body, so it can be effectively guided.

However, during the implementation of the above-mentioned technical solutions, it was found that at least the following technical problems existed:

Poor safety, and debris cannot be collected: when the existing gas drainage orifice (or channel) reaming device is in use, the drill bit is first inserted into the orifice of gas drainage, and the channel is reamed by the reaming bit. The inner wall of the hole is crushed to increase the inner diameter of the hole, thereby playing the role of reaming. However, since the reaming bit cannot recover the crushed soil, the soil will fall into the bottom of the hole along the hole, resulting in If the hole is blocked, it is necessary to re-drill the hole, which seriously affects the efficiency of subsequent cleaning; secondly, because the density of gas is lower than that of air, if the hole is not sealed during reaming, it will easily lead to gas leakage and accidents. For this reason, we A gas drainage drilling orifice reaming device is proposed.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a gas drainage drilling orifice reaming device, which solves the problem that the existing gas drainage orifice (or channel) reaming device is poor in safety and unable to treat debris when in use. Technical issues with collection.

(2) Technical solution

To achieve the above object, the present invention is achieved through the following technical solutions:

The hole reaming device for gas drainage drilling is connected with the reaming drill. The reaming device includes a collection cover, which can be connected to the bottom of the reaming drill, and moves synchronously with the movement of the reaming drill. When the reamer is working, the debris generated falls from the inner wall of the hole and falls into the collection cover, so as to prevent these debris from blocking the hole, thereby reducing the difficulty of subsequent cleaning, and in order to prevent gas during drilling Leakage, a seal is installed on the collection cover, the seal will be able to block the gap between the collection cover and the inner wall of the tunnel, so that the gas cannot leak from the gap between the collection cover and the tunnel, and at the same time, it can also prevent debris from entering In the hole, so there will be no blockage, so as to prevent the debris generated by the reaming from hindering the smoothness of the hole, so that there is no need for subsequent processing:

The seal is used to fit the inner wall of the hole, so as to reduce the leakage of gas to a certain extent and improve the safety when reaming;

The collection cover is connected with the seal and is used to collect debris generated during hole reaming, without subsequent cleaning of the debris generated during hole reaming;

Wherein, the seal includes a fixed ring and an air gasket sleeved on the outside of the fixed ring, like a "swimming ring", which uses its flexibility to fit the inner walls of the channels of different shapes, and the fixed ring passes through the air gasket Fitting with the inner wall of the hole, so as to make flexible contact with the inner wall of the hole, without causing wear of the fixing ring.

Preferably, the fixing ring includes a plurality of sleeve rods arranged in a circular array, and connecting rods are connected between two adjacent sleeve rods, and the fixing ring is alternately connected together by sleeve rods and connecting rods The formed device, moreover, the connecting rod is plugged into the sleeve rod, not only used to connect two adjacent sleeve rods together, but also can enter into the sleeve rod, thereby reducing the volume of the fixed ring and making it easy to adapt Pores with different inner diameters;

Wherein, the end of the connecting rod is plugged into the inside of the sleeve rod, and the end of the connecting rod and the inner wall of the sleeve rod are connected by a spring, and the elastic force of the spring is toward the center of the sleeve rod, that is, the spring pair is connected. The force exerted by the rod is to move the connecting rod into the sleeve rod.

Preferably, the air gasket includes an airbag wall and an elastic belt connected to the inner wall of the airbag wall away from the sleeve rod, so that when the air gasket is deflated, it can be driven by the elastic belt to move towards the fixed ring, thereby The air gasket is formed like a "pleat", so that the volume of the air gasket is reduced, at this time the connecting rod is inserted into the sleeve rod under the action of the spring, thereby reducing the size of the fixing ring, and the elastic band is distributed in the The position of the airbag wall close to the end can make the air gasket shrink from the end position;

Wherein, the elastic belt is always in a stretched state, and the elastic force of the elastic belt pulls the airbag wall toward the direction of the sleeve rod, so that when the air gasket is deflated, the airbag wall is pulled toward the direction of the fixing ring. The volume of the device is reduced, which is convenient for transportation. At the same time, the volume of the air gasket can be reduced, so that it can be easily attached to the inner wall of the hole with different inner diameters.

Preferably, the inner wall of the airbag wall close to the sleeve rod is connected with a limiting band, and the limiting band corresponds to the limiting ring sleeved on the outer wall of the sleeve rod;

Wherein, the inner wall of the limit band is provided with a chute, and the limit band is engaged with the limit ring on the outside of the sleeve rod through the chute, so as to limit the range of motion of the air washer during the rotation process and avoid the position of the air washer when in use. Offset occurs, thereby ensuring the stability of the position of the air gasket.

Preferably, the number of the fixed rings is two groups, and they correspond up and down respectively, and the two connecting rods corresponding up and down are connected by connecting parts, so as to adjust the positional relationship between the two fixed rings, so that the two The fixing rings can be inclined to each other, away from each other, close to each other, etc., so as to adapt to the shape of the channel;

Wherein, the connecting part includes a damper, which absorbs the vibration generated when the fixed ring collides with the inner wall of the tunnel, and the outside of the damper is provided with a traction spring to assist the damper in restoring its original shape. The two ends of the traction spring are respectively connected with two connecting rods;

The two ends of the damper are respectively hinged with the two connecting rods, which facilitates the relative rotation between the damper and the connecting rods, and avoids when the device moves to the bend of the channel (or when the upper fixing ring shrinks or expands) ), no movement can take place between the retaining ring and the damper.

Preferably, the end of the damper is connected with a connecting ball, and the damper is embedded with the slot on the outer wall of the connecting rod through the connecting ball, so that multi-angle rotation can be performed between the damper and the fixed ring, and the device can be improved. applicability;

Wherein, more than half of the volume of the connecting ball is embedded in the slot to prevent the connecting ball from moving out of the slot, thereby ensuring the stability of the connection between the connecting ball and the connecting rod.

Preferably, an extension rod is connected to the fixed ring below, and is connected to the edge of the collection cover through the extension rod;

Wherein, the diameter of the collection cover is smaller than the diameter of the fixed ring when it is fully expanded. At this time, the upper fixed ring is larger than the lower fixed ring, so that a funnel is formed between the two fixed rings. When the aperture is large, the lower fixed ring enters into the small channel, and the air gasket between the two fixed rings is in contact with the excessive part of the channel (squeeze the connecting part to make the connecting part shrink inward). Move down, so that the upper fixed ring is squeezed and shrinks (the connecting rod enters the sleeve rod), and finally enters the small hole, so as to fit the inner wall of the small hole, so that it is suitable for holes with different inner diameters, which is convenient for installation Pores with different inner diameters are sealed.

Preferably, a ring is provided between the collection cover and the sealing member, so as to block the gap between the collection cover and the sealing member, and one side of the ring is bonded to the edge of the collection cover, and the other end is bonded to the edge of the sealing member. The outer wall of the collection cover is attached to each other, and the two are only close to each other, not connected, thereby reducing the gap between the collection cover and the seal to a certain extent, and avoiding a large amount of leakage caused by gas;

Wherein, the outside of the loop is connected with the extension rod, so as to provide support for the loop.

Preferably, the reaming drill includes a drill frame and a plurality of drill bits connected to the drill frame, and the center of the drill frame is connected with a delivery pipe, which can be made of flexible materials or hard materials. The two drill bits surround the outer wall of the delivery pipe, and do not contact the delivery pipe when the drill bit rotates;

Wherein, the reamer is connected to the inner wall of the collection cover through the conveying pipe, so that the reamer and the collection cover are connected together to facilitate linkage.

Preferably, a spray head is connected to the drilling frame, and the water outlet of the spray head faces the drill bit, which is convenient for washing the soil on the drill bit, and allows the muddy water to enter the collection cover;

Wherein, the end of the delivery pipe is connected with a water pump, and the delivery pipe transports the muddy water collected by the collection cover to the outside through the water pump, thereby preventing the muddy water from occupying the inner space of the collection cover and reducing the force on the collection cover.

(3) Beneficial effects

1. Since the air gasket is used to block the gap between the collection cover and the inner wall of the orifice, and the air washer is set outside the fixed ring, so that the fixed ring does not rub against the inner wall of the orifice, it effectively solves the existing problem. The gas drainage orifice (or channel) reaming device has a technical problem of poor safety when used, and then realizes the sealing of the orifice (or channel) to prevent gas leakage during reaming, thereby improving the time of reaming. security.

2. Due to the use of the collection cover to collect the soil generated during the drilling process, and then move with the drill bit, it effectively solves the problem that the existing gas drainage orifice (or channel) reaming device cannot be crushed when in use. The technical problem of collecting cuttings, and then realizing the collection of soil generated by drilling, avoiding the silt generated by drilling from falling into the tunnel and causing blockage, thereby improving the convenience of reaming.

3. Since the connecting rod and the sleeve rod are connected in a plug-in manner, and the elastic belt is set on the wall of the airbag, it effectively solves the problem of the existing gas drainage orifice (or channel) reaming device when in use. , the technical problem of not being able to cooperate with holes with different inner diameters, and then realize the adjustment of the diameter of the fixed ring, which is convenient to correspond to orifices with different inner diameters, thereby improving the applicability of the device.

4. Since the damper is connected in front of the two fixed rings, and the damper is fitted with the fixed ring through the spherical connection ball at the end, the adjustability of the shape between the fixed rings is realized, and the position of the fixed ring is avoided. Adaptive adjustment follows the shape of the channel, and at the same time reduces the rigidity of the device and makes it "soft", thereby improving the applicability of the device.

5. Due to the use of extension rods to connect the lower fixing rings with the collection cover, the air gaskets in front of the two fixing rings are funnel-shaped, which enables the device to pass through stably when it encounters the ladder structure on the inner wall of the tunnel. At the same time, it can also cooperate with channels of different inner diameters to improve the fit between the device and the inner wall of the channel.

6. Since the nozzle is used to extract the inner wall sediment adhered to the drill bit, the water stain and sediment generated during the reaming can be separated, so as to ensure the safety of the reaming and avoid the influence of the sediment on the subsequent expansion. hole.

Description of drawings

The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.

Fig. 1 is the overall structural diagram of the embodiment of the present invention;

Fig. 2 is the structural diagram of reaming drill in the embodiment of the present invention;

Fig. 3 is a structural diagram when the sealing member is deployed in the embodiment of the present invention;

Fig. 4 is the structural diagram when the air gasket is deflated in the embodiment of the present invention;

Fig. 5 is one of the sectional views of Fig. 3 of the present invention;

Fig. 6 is the second cross-sectional view of Fig. 3 of the present invention;

Fig. 7 is a structural diagram of a retaining ring in an embodiment of the present invention;

Fig. 8 is the explosion structure diagram of Fig. 7 of the present invention;

Fig. 9 is a structural diagram of a connection part in an embodiment of the present invention;

Fig. 10 is a structural diagram of the fixed ring in Fig. 7 of the present invention when retracted;

Fig. 11 is a cross-sectional view of the connection part in use in the embodiment of the present invention;

Figure 12 is a schematic diagram of the movable direction of the connecting part in the embodiment of the present invention

Fig. 13 is a structural diagram of the separation of the reamer and the collection cover in the embodiment of the present invention;

Fig. 14 is a structural diagram when the collecting cover is netted in the embodiment of the present invention;

Fig. 15 is a schematic diagram of the use state of the present invention.

Legend: 1. Reaming drill; 11. Drill frame; 12. Drill bit; 13. Nozzle; 2. Collecting cover; 3. Seal; 31. Sleeve rod; Airbag wall; 332, elastic band; 333, limit band; 34, connecting rod; 35, connecting part; 351, damper; 352, connecting ball; 353, traction spring; 36, extension rod; 4, delivery pipe; 5 , Ring belt; 6, water pump.

Detailed ways

The embodiment of the present application provides a gas drainage drilling orifice reaming device, which effectively solves the problem that the existing gas drainage orifice (or tunnel) reaming device is poor in safety and cannot be used for debris removal. The technical problem of collection, when the existing gas drainage orifice (or channel) reaming device is used, the air gasket is used to block the gap between the collection cover and the inner wall of the orifice, and the air gasket is set on the fixed The outside of the ring prevents the fixed ring from rubbing against the inner wall of the orifice, thereby realizing the sealing of the orifice (or channel), preventing gas leakage during reaming, thereby improving the safety during reaming; The cover collects the soil generated during the drilling process, and then moves with the drill bit, thereby realizing the collection of the soil generated by the drilling, avoiding the silt generated by the drilling from falling into the channel and causing blockage, thereby improving the reaming process. The convenience; because the connecting rod and the sleeve rod are connected by plugging, and the elastic belt is set on the wall of the airbag, the adjustment of the diameter of the fixing ring is realized, which is convenient to correspond to the holes of different inner diameters, thereby improving the device. Applicability; because the damper is connected before the two fixed rings, and the damper is fitted with the fixed ring through the spherical connection ball at the end, thereby realizing the adjustability of the shape between the fixed rings, avoiding the The position cannot be adjusted adaptively following the shape of the tunnel, and at the same time, the rigidity of the device can be reduced to make it "soft" (that is, to change its own shape), thereby improving the applicability of the device; The collection cover is connected, so that the air gasket in front of the two fixing rings is funnel-shaped, so that when the device encounters the stepped structure on the inner wall of the channel, it can pass through stably, and it can also cooperate with channels of different inner diameters, improving the device. The adhesion of the inner wall of the hole; because the nozzle is used to extract the inner wall silt adhered to the drill bit, and then realize the water stain and silt generated during the reaming, so as to ensure the safety of reaming and avoid mud Sand affects subsequent reaming.

Example 1

The technical solution in the embodiment of the present application is to effectively solve the technical problem that the existing gas drainage orifice (or tunnel) reaming device has poor safety and cannot collect debris when in use. The general idea is as follows:

Aiming at the problems existing in the prior art, the present invention provides a gas drainage drilling orifice reaming device, which is connected with the reamer 1, and the reaming device includes a collection cover 2, which can be connected to the reamer 1, it moves synchronously with the movement of the reamer 1, and when the reamer 1 is working, the debris generated falls from the inner wall of the tunnel and falls into the collection cover 2, thereby preventing these debris from being The hole is blocked, thereby reducing the difficulty of subsequent cleaning, and in order to prevent gas leakage during drilling, a seal 3 is installed on the collection cover 2, and the seal 3 will be able to block the gap between the collection cover 2 and the inner wall of the tunnel. so that the gas cannot leak from the gap between the collection cover 2 and the hole, and at the same time, it can prevent debris from entering the hole, so there will be no clogging, thereby preventing the debris generated by the reaming from hindering the hole Unobstructed, so that there is no need for subsequent processing:

The seal 3 is used to fit the inner wall of the hole, thereby reducing gas leakage to a certain extent and improving the safety when reaming;

The collecting cover 2 is connected with the sealing member 3, and is used to collect debris generated during hole reaming, without subsequent cleaning of the debris generated during hole reaming;

Among them, the seal 3 includes a fixed ring and an air gasket 33 sleeved outside the fixed ring, like a "swimming ring", using its flexibility to fit with the inner walls of different shapes of the tunnel, as shown in Figure 14, and fixed The ring is attached to the inner wall of the hole through the air gasket 33, so as to be in flexible contact with the inner wall of the tunnel without causing wear of the fixed ring.

In the specific implementation process, the collection cover 2 is installed on the bottom of the reamer 1, and when the reamer 1 moves in the hole (or channel), the reamer 1 scrapes off the soil on the hole wall to form debris , these debris fall into the collection cover 2 located under the reamer 1 under the action of gravity, as shown in Figure 14, these debris are collected by the collection cover 2 to avoid entering the channel and causing channel blockage Case.

After cleaning, the reamer 1 is pulled outwards, and the collection cover 2 connected with the reamer 1 moves upward synchronously at this time, thereby moving to the opening of the tunnel (without moving out of the orifice, it can not only block the orifice, prevent Gas leaks, meanwhile, is convenient to use again), at this moment, just can carry out cleaning to the debris collected inside collecting cover 2, need not use drilling device to clean up hole again, improve the convenience of cleaning.

When in use, since the top of the collection cover 2 is provided with a seal 3, the gap between the collection cover 2 and the inner wall of the tunnel can be blocked to avoid gas leakage. Secondly, because the air gasket 33 is sleeved outside the fixed ring, and The two will not be connected, so when the air gasket 33 is in contact with the inner wall of the tunnel, it can be closely attached to the inner wall of the tunnel, and when the collection cover 2 moves, the position where the air gasket 33 is attached to the inner wall of the tunnel can remain motionless, and along the Rolling against the inside of the tunnel, so as to avoid the friction between the fixed ring and the inner wall of the tunnel, just like the "tire" rolling on the ground, it will not rub against the ground. Therefore, by setting the air gasket 33 outside the fixed ring, not only can The gap between the collection cover 2 and the inner wall of the tunnel is sealed, and at the same time, the friction between the fixing ring and the inner wall of the tunnel can be avoided, thereby improving the safety of the device in use.

Example 2

Based on Example 1, the embodiment of this application is to solve the technical problems of inconvenient retraction and unchangeable inner diameter of the device, and the general idea is as follows:

The fixed ring includes a plurality of sleeve rods 31 arranged in a circular array, and a connecting rod 34 is connected between two adjacent sleeve rods 31, as shown in Figure 7, the fixed ring is composed of sleeve rods 31 and connecting rods 34 in sequence Alternately connected together to form a device, and the connecting rod 34 is plugged into the sleeve rod 31, not only used to connect two adjacent sleeve rods 31 together, but also can enter into the sleeve rod 31, thereby reducing the The volume of the small fixing ring, as shown in Figure 10, is convenient for adapting to holes with different inner diameters;

Wherein, the end portion of the connecting rod 34 is plugged into the inside of the sleeve rod 31, and the end portion of the connecting rod 34 and the inner wall of the sleeve rod 31 are connected by a spring, and the elastic force of the spring is toward the center of the sleeve rod 31, namely The force exerted by the spring on the connecting rod 34 is to make the connecting rod 34 move in the sleeve rod 31 .

In some examples, the air gasket 33 includes an airbag wall 331 and an elastic band 332 connected to the inner wall of the airbag wall 331 away from the sleeve rod 31 , as shown in FIGS. 5 and 6 , so that when the air gasket 33 is deflated, Driven by the elastic belt 332, it moves toward the fixed ring, thereby forming an air gasket 33 like a "pleat", and the volume of the air gasket 33 is reduced like this. At this time, the connecting rod 34 is inserted into the sleeve under the action of the spring. In the rod 31, thereby reducing the size of the fixing ring, as shown in Figure 7 and Figure 10, and the elastic band 332 is distributed in the position near the end of the airbag wall 331, as shown in Figure 4, can make the air gasket 33 from the end The position of the head begins to shrink;

Wherein, the elastic band 332 is always in a stretched state, and the elastic force of the elastic band 332 pulls the airbag wall 331 toward the direction of the sleeve rod 31, so that when the air gasket 33 is deflated, the airbag wall 331 is pulled toward the direction of the fixing ring. At this time, the volume of the device is reduced, which is convenient for transportation, and at the same time, the volume of the air gasket 33 can be reduced, so that it is convenient to fit the inner walls of the tunnels with different inner diameters.

In some examples, a limiting band 333 is connected to the inner wall of the airbag wall 331 near the sleeve rod 31, and the limiting band 333 corresponds to the limiting ring 32 sleeved on the outer wall of the sleeve rod 31, as shown in FIG. 6 ;

Wherein, the inner wall of the limit band 333 is provided with a chute, and the limit band 333 is clamped with the limit ring 32 outside the sleeve rod 31 through the chute, thereby limiting the range of motion of the air washer 33 during rotation and preventing the air washer 33 from The position is shifted during use, thereby ensuring the stability of the position of the air gasket 33 .

In the specific implementation process, when the air gasket 33 needs to be retracted, the air gasket 33 is deflated. At this time, the airbag wall 331 moves towards the direction of the fixing ring under the action of the elastic belt 332, thereby folding the air gasket 33. Get up, as shown in Figure 4, now the air gasket 33 of the device is just wrapped and cleaned, because the end of the connecting rod 34 is plugged into the inside of the sleeve rod 31, and the end of the connecting rod 34 and the inner wall of the sleeve rod 31 They are connected by a spring, so when the air gasket 33 is deflated, the connecting rod 34 moves to the inside of the sleeve rod 31 under the action of the spring, thereby reducing the volume of the device, as shown in Figure 10, which is convenient for the device to be retracted , and at the same time it is convenient to adjust the size of the fixing ring.

Example 3

Based on Embodiment 1, the embodiment of this application aims to solve the problem that adaptive activities cannot be performed when the fixed ring moves inside the tunnel, and the general idea is as follows:

The quantity of fixed ring is two groups, and respectively up and down corresponds, connects by setting connecting part 35 between two connecting rods 34 corresponding up and down, as shown in Figure 7, thereby adjusts the positional relationship between two fixed rings, makes two The two fixing rings can be inclined to each other, away from each other, close to each other, etc., so as to adapt to the shape of the channel;

Wherein, the connecting part 35 includes a damper 351, which absorbs the vibration generated when the fixed ring collides with the inner wall of the tunnel, and the outside of the damper 351 is provided with a traction spring 353, which assists the damper 351 to restore its original shape, and the two sides of the traction spring 353 The ends are respectively connected with two connecting rods 34, as shown in Figure 9;

The two ends of the damper 351 are respectively hinged with the two connecting rods 34, which facilitates the relative rotation between the damper 351 and the connecting rods 34, and avoids when the device moves to the bend of the tunnel (or when the upper fixing ring shrinks or expands) ), no activity can take place between the retaining ring and the damper 351.

In some examples, the end of the damper 351 is connected with a connecting ball 352, and the damper 351 is embedded in the slot on the outer wall of the connecting rod 34 through the connecting ball 352, so that the damper 351 and the fixed ring can be connected. Multi-angle rotation to improve the applicability of the device;

Wherein, more than half of the volume of the connecting ball 352 is embedded in the slot to prevent the connecting ball 352 from moving out of the slot, thereby ensuring the stability of the connection between the connecting ball 352 and the connecting rod 34 .

In the specific implementation process, the two fixed rings are connected by a damper 351, which can not only absorb the impact force received by the device, but also adjust the distance between the two fixed rings, that is, the two fixed rings can be connected to each other. Separation can also be close to each other.

Since the damper 351 is connected to the fixed ring through the spherical connecting ball 352, multi-angle rotation between the damper 351 and the fixed ring can be performed, so that the two fixed rings can tilt and move, improving the adaptability of the device.

Example 4

Based on Embodiment 1, the embodiment of the present application aims to solve the problem of the gap between the collection cover and the seal and how to fit the inner wall of the tunnel with different inner strengths. The general idea is as follows:

An extension rod 36 is connected to the fixed ring below, and is connected with the edge of the collection cover 2 through the extension rod 36, as shown in Figure 3;

Wherein, the diameter of collecting cover 2 is less than the diameter when the fixed ring is fully expanded, as shown in Figure 1, at this moment, the fixed ring of the upper part is larger than the fixed ring of the lower part, so that a funnel is formed between the two fixed rings, so from large to large When the aperture channel enters the small aperture channel, the lower fixed ring enters into the small channel, and the air gasket 33 between the two fixed rings contacts with the channel transition (squeeze the connecting part 35 to make the connecting part 35 inward contraction), as the device continues to move down, the upper fixing ring is squeezed and shrinks (the connecting rod 34 enters the sleeve rod 31), and finally enters the small channel, thereby fitting the inner wall of the small channel, As shown in FIG. 14 , it is suitable for channels with different inner diameters, and it is convenient to seal the channels with different inner diameters.

In some examples, a band 5 is provided between the collection cover 2 and the sealing member 3, so as to block the gap between the collection cover 2 and the sealing member 3, and one side of the band 5 is glued to the edge of the collection cover 2 The other end is attached to the outer wall of the seal 3, and the two are only close to each other, not connected, thereby reducing the gap between the collection cover 2 and the seal 3 to a certain extent, and avoiding a large amount of leakage caused by gas;

Wherein, the outside of the loop belt 5 is connected with the extension rod 36 to provide support for the loop belt 5 .

In the specific implementation process, since the diameter of the collecting cover 2 is smaller than the diameter when the fixing ring is fully expanded, and the lower fixing ring is indirectly connected with the collecting cover 2, as shown in Figure 1, at this time, the upper fixing ring is larger than the lower fixing ring. Ring, so that a funnel is formed between the two fixed rings, so when entering from the large-diameter channel to the small-diameter channel, the lower fixed ring enters into the small channel, and the air gasket 33 between the two fixed rings, and Contact at the excessive part of the channel (squeeze the connecting part 35 to make the connecting part 35 shrink inward), and as the device continues to move down, the upper fixing ring is squeezed and shrinks (the connecting rod 34 enters the sleeve rod 31), Finally, it enters into the small channel, so as to fit the inner wall of the small channel, as shown in Figure 14, so it is suitable for channels with different inner diameters, and it is convenient to seal the channels with different inner diameters.

Example 5

Based on Embodiment 1, the embodiment of the present application solves how to extract the muddy water when the reaming drill is connected to the collection cover. The general idea is as follows:

The reamer 1 includes a drill frame 11 and a plurality of drill bits 12 connected to the drill frame 11, and the center of the drill frame 11 is connected with a delivery pipe 4, which can be made of a flexible material or a hard material. A plurality of drill bits 12 surround the outer wall of the delivery pipe 4, and the drill bits 12 do not contact the delivery pipe 4 when rotating, as shown in Figure 2;

Wherein, the reamer 1 is connected to the inner wall of the collection cover 2 through the conveying pipe 4, as shown in FIG.

In some examples, the drill frame 11 is connected with a nozzle 13, and the water outlet of the nozzle 13 faces the drill bit 12, which is convenient for washing the soil on the drill bit 12, and allows the muddy water to enter the collection cover 2;

Wherein, the end of conveying pipe 4 is connected with water pump 6, and conveying pipe 4 conveys the muddy water that collecting cover 2 collects outwards by water pump 6, thereby avoids that muddy water occupies the internal space of collecting cover 2, alleviates the power that collecting cover 2 is subjected to simultaneously, Adopting the integrated collection cover 2 can hold the muddy water, but it is easy to collide with and rub against the inner wall of the tunnel.

In addition, the netted collection cover 2 can also be used as required, which can also reclaim the earth produced by the drilling, and can also avoid the hard collision of the collection cover 2 on the inner wall of the tunnel (the use of the netted collection cover 2 can have free movement and Bending), but cannot hold muddy water.

Finally, it should be noted that obviously, the above-mentioned embodiments are only examples for clearly illustrating the present invention, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. However, obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims (10)

1. The hole reaming device of gas drainage drilling, which is connected with the reaming drill (1) and located below the reaming drill, is characterized in that the reaming device includes: a sealing member (3), which is used for bonding with the inner wall of the hole; The collection cover (2), connected with the sealing member (3), is used to collect debris generated during reaming; Wherein, the sealing member (3) includes a fixed ring and an air gasket (33) sleeved outside the fixed ring, and the fixed ring is bonded to the inner wall of the hole through the air gasket (33). 2. The gas drainage drilling orifice reaming device according to claim 1, characterized in that: the fixed ring includes a plurality of sleeve rods (31) arranged in a circular array, and two adjacent A connecting rod (34) is connected between the sleeve rods (31); Wherein, the end of the connecting rod (34) is inserted into the inside of the sleeve rod (31), and the end of the connecting rod (34) and the inner wall of the sleeve rod (31) are connected by a spring. 3. The gas drainage drilling orifice reaming device according to claim 1, characterized in that: the air gasket (33) includes an airbag wall (331) and is connected to the airbag wall (331) away from the sleeve rod (31) ) an elastic band (332) on one side of the inner wall, and the elastic band (332) is distributed near the end of the airbag wall (331); Wherein, the elastic band (332) is always in a stretched state, and the airbag wall (331) is pulled toward the direction of the sleeve rod (31) by the elastic force of the elastic band (332). 4. The gas drainage drilling orifice reaming device according to claim 3, characterized in that: the inner wall of the air bag wall (331) close to the casing rod (31) is connected with a limiting band (333), And the spacer band (333) corresponds to the spacer ring (32) sleeved on the outer wall of the sleeve rod (31); Wherein, the inner wall of the limiting band (333) is provided with a sliding groove, and the limiting band (333) is engaged with the limiting ring (32) outside the sleeve rod (31) through the sliding groove. 5. The gas drainage drilling orifice reaming device as claimed in claim 2, characterized in that: the number of the fixed rings is two groups, and the upper and lower corresponding respectively, and the two corresponding connecting rods (34 ) are connected by setting a connecting portion (35); Wherein, the connecting portion (35) includes a damper (351), and the outside of the damper (351) is sheathed with a traction spring (353), and the two ends of the traction spring (353) are respectively connected with two connecting rods ( 34) connect; Both ends of the damper (351) are respectively hinged to the two connecting rods (34). 6. The gas drainage drilling orifice reaming device according to claim 5, characterized in that: the end of the damper (351) is connected with a connecting ball (352), and the damper (351) is connected to The ball (352) is embedded with the draw-in groove on the outer wall of the connecting rod (34); Wherein, more than half of the volume of the connection ball (352) is embedded in the slot. 7. The gas drainage drilling orifice reaming device as claimed in claim 1, characterized in that: an extension rod (36) is connected to the lower fixed ring, and the extension rod (36) is connected to the collection cover ( 2) edge connections; Wherein, the diameter of the collecting cover (2) is smaller than the diameter when the fixing ring is fully expanded. 8. The gas drainage drilling orifice reaming device as claimed in claim 7, characterized in that: a loop (5) is provided between the collection cover (2) and the seal (3), and the loop One side of (5) is bonded to the edge of the collection cover (2), and the other end is bonded to the outer wall of the seal (3); Wherein, the outside of the loop band (5) is connected with the extension rod (36). 9. The gas drainage bore hole reaming device according to any one of claims 1-8, characterized in that: the reamer (1) comprises a drill frame (11) and a plurality of holes connected to the drill frame ( 11) the drill bit (12) on the top, and the center of the drill frame (11) is connected with the delivery pipe (4), and a plurality of the drill bits (12) surround the outer wall of the delivery pipe (4); Wherein, the reamer (1) is connected to the inner wall of the collection cover (2) through a delivery pipe (4). 10. The gas drainage drilling orifice reaming device as claimed in claim 9, characterized in that: the drill frame (11) is connected with a nozzle (13), and the water outlet of the nozzle (13) faces the drill bit ( 12); Wherein, the end of the conveying pipe (4) is connected with a water pump (6), and the conveying pipe (4) conveys the muddy water collected by the collecting cover (2) to the outside through the water pump (6).

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