CN210152634U - Structure for monitoring rotation speed of drilling machine - Google Patents

Abstract

The utility model relates to the technical field of the supervision of the operation of a drilling machine, and discloses a structure for supervising the rotating speed of the drilling machine, which comprises a rotating speed monitor and a transmission structure, wherein the transmission structure is provided with a transmission shaft, and the transmission structure is provided with a mounting plate which protrudes outwards and is horizontally arranged; the transmission structure is provided with an outward horizontally arranged mounting plate, the rotating speed monitor is vertically arranged on the mounting plate and is provided with a monitoring head, and the monitoring head is positioned on the outer side of the rotating shaft, is positioned above the driven shaft and is arranged towards the transmission shaft; the top of the transmission shaft is provided with a vertical mark post, the mark post is arranged by deviating from the rotation center of the transmission shaft, the nearest distance between the mark post and the monitoring head is more than 1cm and less than 3cm, and the farthest distance between the mark post and the monitoring head is more than 3 cm; when the drilling machine rotates, the transmission shaft rotates, the monitoring head can monitor the number of rotation turns and the rotating speed of the drilling machine, the structure is simple, the field installation is also convenient, and the monitoring head can be efficiently applied to the field construction environment.

Description

Structure for monitoring rotation speed of drilling machine

Technical Field

The patent of the utility model relates to a technical field of rig operation supervision particularly, relates to rig rotational speed supervision structure.

Background

Geological drilling (geo-drilling) is an important technical means in exploration work. In the operation process, a drilling machine is used for drilling downwards from the ground surface to form a cylindrical drilled hole in a stratum, an operator can adopt continuous rock core samples from the drilled hole to place according to a footage, and selects rock cores and soil samples at different depths to carry out indoor analysis tests so as to identify and divide the stratum, determine the physical and mechanical properties and indexes of the rock and soil samples and provide suggested values of rock and soil mechanical parameters required by design.

In the past, most of the supervision modes of geological drilling are based on the supervision of drilling machines, a certain number of drilling machine supervisors are arranged according to the number of the drilling machines, the drilling machine supervisors supervise the whole drilling process, and with the development of economy and science and technology, more and more problems exposed by the supervised drilling machines are considered, and the supervision modes mainly comprise:

1) the method is not consistent with the current national advocated major trends of field operation automation, data acquisition electronization, quality control informatization and data processing intellectualization, and seriously hinders the automation and informatization process of the whole process of exploration work;

2) the labor cost is higher and higher, and the charge standard of geological drilling is basically fixed, so that the manpower cost of a surveying unit has to be reduced, the number of drilling machine supervisors is reduced, and the supervision strength of geological drilling operation is smaller and smaller;

3) the quality of rig supervisors is good and uneven, the phenomena of untimely supervision, untimely supervision and even lack of supervision exist, the problems of irregular operation, insufficient drilling footage/over footage and the like occur occasionally, more serious problems are that rig supervisors and rig operators generate efforts at one stroke and jointly make false, the drilling is forbidden, and the means of making false are more and more high and difficult to discover;

4) when the first party doubts the authenticity of geological drilling operation of an investigation unit, the evidence-taking strength of the investigation unit is insufficient;

5) the operator of the drilling machine judges the drilling footage by mainly depending on the length of the mental drill rod and visual inspection of the vertical shaft graduated scale of the drilling tool, so that the error is large and even the calculation error occurs;

6) one of the important criteria for dividing the rock-soil layer by the drilling rig operator and the drilling recorder is the change boundary of the drilling difficulty (drilling rate), and the determination of the change boundary needs to timely and accurately measure the drilling depth when the drilling rate obviously changes. At present, on one hand, the time judgment of a drilling operator on the change boundary line is mainly felt, and the judgment is easy to lag relatively; on the other hand, the drilling depth is often estimated by visual inspection, so that the drilling depth is judged roughly, and finally, the dividing accuracy of the boundary line of the rock-soil layer is poor;

7) when geological catalogues divide the stratum for the second time, particularly when the core sampling rate is low or the core sample is not placed in a standard manner, reference is also made to the variation boundary line of the drilling difficulty degree, but the catalogues often lack communication or poor communication with the drilling machine operators, so that the rock-soil layer division is based on more characteristics such as the color and the hand feeling of the stretched/compressed soil sample which is placed according to the manual assumption of the drilling machine operators, the variation of the drilling difficulty degree lacks comprehensive understanding, the factors further enlarge the error of the rock-soil layer division, and even the condition of missing the stratum occurs, such as small soil holes, karst caves, weak interlayers and the like;

8) project technicians and managers do not know the geological drilling field progress timely, information is relatively lagged, and project management is not good. Such as: rig operators are unauthorized to change drilling locations, not drilling at a designated location; drilling footage is insufficient, the rig operator is adept at terminating the hole ahead of time, etc.

In view of the difficulty in automatically supervising the operation of the drilling machine at present, in the field construction, the rotating speed of the drilling machine is supervised by adopting some supervision structures, but the structure is complex and the effective application on the field is difficult.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rig rotational speed supervises structure, aims at solving prior art, and there is the problem that the structure is complicated in rig rotational speed supervise structure.

The utility model is realized in such a way that the drilling machine rotating speed supervision structure comprises a rotating speed monitor and a transmission structure, wherein the transmission structure is provided with a transmission shaft, and the transmission structure is provided with a mounting plate which protrudes outwards and is horizontally arranged; the transmission structure is provided with an outward horizontally arranged mounting plate, the rotating speed monitor is vertically arranged on the mounting plate and provided with a monitoring head, and the monitoring head is positioned on the outer side of the rotating shaft, is positioned above the transmission shaft and is arranged towards the transmission shaft; the top of transmission shaft is equipped with the sighting rod of erectting the form, the sighting rod skew the rotation center of transmission shaft arranges, the sighting rod with nearest distance between the monitoring head is greater than 1cm and is less than 3cm, the sighting rod with furthest distance between the monitoring head is greater than 3 cm.

Furthermore, the lower part of the rotating speed monitor extends downwards to form an insertion rod, the mounting plate is provided with a jack with an opening at the upper end, and the insertion rod is inserted into the jack.

Furthermore, a guide groove strip is arranged on the outer side wall of the inserted rod, extends along the axial direction of the inserted rod and penetrates through the bottom of the insertion pipe; the inner side wall of the jack is convexly provided with an elastic strip, the elastic strip is arranged along the axial extension of the jack, and the elastic strip is embedded into the guide groove strip.

Furthermore, the outer side wall of the inserted bar is provided with two guide groove strips which are arranged at intervals, and the inner side wall of the jack is convexly provided with two elastic strips which are arranged at intervals.

Furthermore, the outer end of the elastic strip is curved, and the outer ends of the two elastic strips are oppositely curved.

Further, the transmission shaft epirelief is equipped with the reset block, the reset block has the butt and is in the butt face in the sighting rod outside, along direction from bottom to top, the butt face is the slope arranges inwards.

Compared with the prior art, the utility model provides a rig rotational speed supervises structure, through setting up eccentric sighting rod at the transmission shaft, and restricts the distance of sighting rod and the monitoring head of rotational speed monitor, and when the rig rotated, the transmission shaft rotated, and the monitoring head then can be supervised its number of turns and rotational speed of rotating, simple structure, and the field installation is also convenient, can the efficient application in the site operation environment.

Drawings

Fig. 1 is a schematic connection diagram of an automatic supervision device for drilling rig operation provided by the present invention;

FIG. 2 is a schematic diagram of the field construction of the automatic supervision device for the operation of the drilling machine provided by the present invention;

FIG. 3 is a schematic view of the connection between the oil pressure monitor and the oil pipe provided by the present invention;

FIG. 4 is a schematic layout of a rig speed monitoring structure provided by the present invention;

fig. 5 is a schematic top view of a data cartridge provided by the present invention;

fig. 6 is a schematic diagram of a site operation of the automatic supervision device for drilling machine operation provided by the utility model;

fig. 7 is another schematic diagram of the field construction of the automatic supervision device for the operation of the drilling machine provided by the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of 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 merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1-7, the preferred embodiment of the present invention is shown.

The automatic supervision device for the operation of the drilling machine provided by the embodiment is applied to geological drilling operation, and of course, the automatic supervision device can also be applied to any construction site which needs to supervise the operation of the drilling machine 200.

The automatic monitoring equipment for the operation of the drilling machine comprises an oil pressure monitor 300, a rotating speed monitor 400, a footage monitor and a data box 101, wherein the oil pressure monitor 300 monitors the oil pressure of an oil pipe 302 of the drilling machine 200, the rotating speed monitor 400 monitors the rotating speed of a transmission shaft 202, and the footage monitor monitors the drilling footage of a drill rod 201;

the data box 101 is internally provided with a data processor 1015, a wireless transmitter 1014, a GPS locator 1013, a battery and a network antenna 1016, wherein the data processor 1015 is respectively connected with the oil pressure monitor 300, the rotating speed monitor 400 and the footage monitor, and is used for receiving and recording data fed back by the oil pressure monitor 300, the rotating speed monitor 400 and the footage monitor; the GPS positioner 1013 plays a role in positioning and positions hole sites needing drilling; the data processor 1015 communicates with the server 100 wirelessly or through wires via the wireless transmitter 1014 and the network antenna 1016, so that the server 100 can know the operation condition of the drilling machine 200 in real time.

In actual construction, the construction process of the automatic monitoring equipment for drilling machine operation is as follows:

1) the drilling machine 200 drives a drill rod 201 to drill a hole in the stratum through a transmission structure 203, the transmission structure 203 is provided with a transmission shaft 202 driven by a motor to rotate, and the drilling machine 200 is provided with an oil pipe 302; installing an oil pressure monitor 300, a rotating speed monitor 400 and a footage monitor on a construction site, wherein the oil pressure monitor 300 is used for monitoring the oil pressure of an oil pipe 302 of the drilling machine 200, the rotating speed monitor 400 is used for monitoring the rotating speed of the transmission shaft 202, and the footage monitor is used for monitoring the drilling footage of the drill rod 201;

2) the data box 101 is connected to a construction site, a data processor 1015, a wireless transmitter 1014, a GPS positioner 1013, a battery and a network antenna 1016 are arranged in the data box 101, wherein the data processor 1015 is respectively connected with the oil pressure monitor 300, the rotating speed monitor 400 and the footage monitor and is used for receiving and recording data fed back by the oil pressure monitor 300, the rotating speed monitor 400 and the footage monitor; the GPS positioner 1013 plays a role in positioning and positions hole sites needing drilling; the data processor 1015 communicates with the server 100 wirelessly or through wires via the wireless transmitter 1014 and the network antenna 1016, so that the server 100 can know the operation condition of the drilling machine 200 in real time.

The automatic supervision equipment for the operation of the drilling machine has the following advantages:

1) the method is beneficial to realizing the ' standardization, standardization and flow ' target advocated by the country and ' informatization of the exploration quality ' overall process supervision ', is beneficial to promoting the automation, informatization and publicization process of the exploration work overall process, is practical to promote the quality of the exploration result, and further promotes the healthy sustainable development of the industry;

2) through synchronous monitoring of oil pressure of an oil pipe 302 of the drilling machine 200, rotating speed of a transmission shaft 202 and drilling footage of a drill rod 201, data acquisition is realized by a data processor 1015, and data acquired by the data processor 1015 is transmitted back to the server 100 in real time through positioning and wireless transmission of a GPS (global positioning system) positioner 1013, so that authenticity of geological drilling operation is ensured, and technical support is provided for realizing 'government supervision, enterprise implementation, social supervision and industry evaluation';

3) in the whole process of geological drilling operation, data are transmitted back to the server 100 in real time for filing, and original data which cannot be changed are left, so that the capability of an investigation unit for proving the authenticity of the drilling operation is improved;

4) the footage monitor is adopted, so that errors caused by manual footage reading are reduced, the accuracy of footage measurement is greatly improved, the standard operation of the drilling process of the drilling machine 200 is ensured, and the actions of drilling footage counterfeiting, insufficient footage drilling, over-drilling footage operation and the like are restrained;

5) the server 100 can automatically draw a drilling process curve according to oil pressure, rotating speed and drilling footage data, and divides the boundary lines of the rock-soil layer by analyzing the change of the curve and combining the field record condition, so that the division of the boundary lines of the rock-soil layer is more scientific and accurate, and the physical and mechanical properties of the rock-soil body can be more deeply and comprehensively analyzed;

6) monitoring data are transmitted to the server 100 in real time, technicians and management personnel can call data indoors in real time to analyze, drilling progress is known more timely, and a surveying unit can conveniently supervise the whole process of the industry process and the field progress.

In actual construction, a drill hole can be newly built, the GPS positioner 1013 performs positioning and sends back coordinates to the server 100, the server 100 performs calculation on the coordinates sent back by the positioning of the GPS positioner 1013 on site in combination with a designed drill hole layout drawing to obtain a drill hole number, and the drill hole number can also be manually input.

Before the drilling machine 200 starts drilling, inputting a starting drilling footage, mainly aiming at the condition that the footage of a manual excavation pipeline exists, and if the operation does not exist, inputting the drilling footage to be 0;

the data processor 1015 may directly perform a "zero clearing" process to inform the server 100 to start a new geological drilling operation, and if the operation is continued last time, the process is performed as "continue operation".

After the drilling operation is started, if the operation needs to be stopped temporarily, the operation is stopped after the drilling machine 200 is stopped; after the drilling operation is completed, the process of "complete operation" is performed, and the power supply to the data box 101 is turned off.

In this embodiment, the data box 101 includes a box body, the box body has a cavity 1011 therein, the data processor 1015, the wireless transmitter 1014, the GPS locator 1013, the battery and the network antenna 1016 are all disposed in the cavity 1011, the box body is provided with a box cover, so that the data box 101 is in a closed state, and the box cover can be opened to facilitate maintenance or replacement of the components inside the box body.

A data port 1012 is formed in a side wall of the case, the data port 1012 is connected to the data processor 1015, and an external device or the like can be directly connected to the data port 1012 through a data line, thereby realizing data transmission or the like with the data processor 1015.

The side wall of the box body is provided with a movable cover, the outer side of the movable cover is protruded with a convex block, the convex block is hinged with the side wall of the box body through a transmission shaft 202, and the transmission shaft 202 is connected with a torsion spring.

The movable cover is used for covering the data port 1012, and when the data port 1012 needs to be opened, the movable cover can be rotated relative to the transmission shaft 202 to open the data port 1012, and when the external force is removed, the movable cover can automatically reset to cover the data port 1012 under the action of the torsion spring.

The lateral wall of the box body of the data box 101 is provided with a multicolor indicating lamp, and the multicolor indicating lamp can correspondingly light different colors according to the actual construction condition.

A plurality of ribs protruding outward are formed on the side wall of the box body, a recessed area is formed between adjacent ribs, the data port 1012 is arranged in the recessed area, and the multi-color indicator light is also arranged in the recessed area.

In addition, the multicolor indicator light and the data port 1012 are wholly sunk in the concave area, so that the data port 1012 or the multicolor indicator light can be prevented from being damaged by the protection of the ribs when the box body is collided.

In this embodiment, an overhead plate is disposed at the bottom of the cavity 1011, a gap exists between the overhead plate and the bottom of the cavity 1011, and a plurality of through holes are disposed in the overhead plate, the data processor 1015, the wireless transmitter 1014, the GPS locator 1013, the battery and the network antenna 1016 are disposed above the overhead plate, and the data processor 1015, the battery, the wireless transmitter 1014 and the GPS locator 1013 are directly fixed to the overhead plate. Thus, even if water accumulation occurs in the cavity 1011, the data processor 1015, the battery, the wireless transmitter 1014, the GPS positioner 1013 and the like can be prevented from being soaked by the user due to the overhead effect of the overhead plate, and a waterproof effect is achieved.

Specifically, the plurality of through holes are arranged throughout the overhead board, or may be arranged at local positions on the overhead board according to actual needs.

In order to facilitate the operation, a touch screen is formed on the outer surface of the cover, so that data input, processing, and the like can be directly performed to the data processor 1015 through the touch screen in a state that the case is not opened.

The network antenna 1016 is provided with a base, the network antenna 1016 is horizontally arranged in the cavity 1011 of the box body, and the base is detachably connected to the inner side wall of the box body, so that the volume of the cavity 1011 can be greatly saved, and the space arrangement can be saved by the horizontal arrangement mode because the length of the network antenna 1016 is possibly longer.

Specifically, be provided with the magic subsides on the base, the base is dismantled through the laminating mode that the magic was pasted and is fixed on the inside wall of box body.

The oil pressure monitor 300 has an oil pipe connector 301, and the oil pipe connector 301 is provided with a jack therein, so that when the oil pipe 302 needs to be monitored, the oil pipe 302 is directly inserted into the jack of the oil pipe connector 301 for fixing.

In order to make the connection between the oil pipe 302 and the oil pipe connector 301 more stable, in this embodiment, a plurality of rings of annular blocking walls are convexly arranged on the inner side wall of the insertion hole, the annular blocking walls are arranged around the circumferential direction of the insertion hole, the plurality of annular blocking walls are sequentially arranged at intervals along the axial direction of the oil pipe connector 301, and an elastic ring is arranged between adjacent annular blocking walls.

Extend along the direction that oil pipe 302 inserted the jack, the annular card wall is arranged towards the inside slope of jack, and is formed with the block step at the end, and this block step encircles the circumferencial direction of jack and arranges, and the block is on the lateral wall of oil pipe 302, like this, after oil pipe 302 inserts at the jack, because the slope of annular card wall arranges, the insertion of oil pipe 302 of being convenient for very much, and after oil pipe 302 produced the impulsive force, under the effect of block step, can block the lateral wall of post oil pipe 302, restriction oil pipe 302 breaks away from out of the jack outwards.

The winding of the lateral wall at oil pipe connector 301 has a plurality of tight loops, and the tight loop aligns with the elastic ring coincidence and arranges, and like this, under the effect of tight loop, the elastic ring can elastic shrinkage, and the tight loop makes the elastic ring tightly overlap on oil pipe 302's lateral wall for oil pipe 302 is more firm arrange the jack in.

The present embodiment further provides a monitoring structure for the rotation speed of the drilling machine, and in the present embodiment, the monitoring structure is applied to an automatic monitoring device for operation of the drilling machine, and of course, the monitoring structure can also be applied to any other occasions or devices that need to monitor the rotation speed of the drilling machine 200, and is not limited to the application in the present embodiment.

The monitoring structure for the rotating speed of the drilling machine comprises the rotating speed monitor, a transmission structure 203 and a transmission shaft 202, wherein the transmission structure 203 is provided with an outward-protruding horizontally-arranged mounting plate 600, and the rotating speed monitor 400 is vertically arranged on the mounting plate 600. The rotational speed monitor 400 has a monitoring head 401, and the monitoring head 401 is located outside the drive shaft 202 and above the top of the drive shaft 202, and is arranged toward the drive shaft 202.

The top of the transmission shaft 202 is provided with a vertical post 403, the post 403 is arranged offset from the rotation center of the transmission shaft 202, the distance between the post 403 and the monitoring head 401 of the rotation speed monitor 400 changes along with the rotation of the transmission shaft 202, and the distance between the post 403 and the monitoring head 401 includes a closest distance and a farthest distance, wherein the closest distance is greater than 1cm and less than 3cm, and the farthest distance is greater than 3 cm.

Along with the rotation of transmission shaft 202, when the distance between sighting rod 403 and monitoring head 401 gets into minimum distance, monitoring head 401 can monitor the removal of sighting rod 403, when the distance between sighting rod 403 and monitoring head 401 is in the farthest distance, monitoring head 401 then can't monitor sighting rod 403, and like this, sighting rod 403 gets into in monitoring head 401's minimum distance at every turn, rotational speed monitor 400 then can automatic record transmission shaft 202 and rotate the round, and transmit data for data processor 1015, calculate in data processor 1015, and then obtain the rotational speed of pivot, obtain the rotational speed of drilling rod 201.

Above-mentioned rig rotational speed supervision structure that provides, through setting up eccentric sighting rod at the transmission shaft, and restrict the distance of sighting rod and the monitoring head of rotational speed monitor, when the rig rotates, the transmission shaft rotates, and the monitoring head then can supervise its number of turns and rotational speed, simple structure, and the field installation is also convenient, can the efficient application in site operation environment.

In this embodiment, the lower portion of the rotational speed monitor 400 has an insertion rod 402 extending downward, and an insertion hole with an open upper end is provided in the mounting plate 600, so that the rotational speed monitor 400 is in an upright state by inserting the insertion rod 402 into the insertion hole. The outer side wall of the plug rod 402 is provided with a guide groove strip which is arranged along the axial extension of the plug rod 402, penetrates the bottom of the plug rod 402, and an elastic strip which is arranged along the axial extension of the plug hole is arranged on the inner side wall of the plug hole in a protruding mode and is embedded in the guide groove strip when the plug rod 402 is inserted into the plug hole.

The outer side wall of the insertion rod 402 is provided with two guide groove strips which are arranged at intervals, the inner side wall of the insertion hole is provided with two elastic strips, and the two elastic strips are correspondingly embedded into the two guide groove strips respectively. The outer end of elasticity strip is crooked form, and the outer end of two elasticity strips is crooked from opposite directions mutually, like this, two elasticity strip embeddings back in the guide way strip, under the effect of elasticity strip, restrict the rotation of inserted bar 402 towards opposite direction respectively for inserted bar 402 stabilizes and arranges in the jack, thereby guarantees that monitoring head 401's orientation keeps unanimous, even under the condition of vibration, inserted bar 402 slightly rotates for the jack, at the effect of two elasticity strips, inserted bar 402 then can automatic re-setting.

When the transmission shaft 202 rotates, the marker post 403 may deviate from the position due to centrifugal force, in this embodiment, a reset block is convexly arranged on the transmission shaft 202, and the reset block has an abutting surface abutting on the outer side of the marker post 403, and the abutting surface is arranged obliquely inwards along the direction from bottom to top, so that even if the transmission shaft 202 rotates, the marker post 403 is inclined outwards, and the marker post 403 can be pressed and reset under the action of the reset block.

In this embodiment, the footage monitor includes a laser range finder 700, the laser range finder 700 is mounted on the mounting plate 600, and the laser range finder 700 has a laser emitting head disposed downward, and as the drilling machine 200 drills, the laser range finder 700 monitors and records falling data, and transmits the data to the server 100 through the data processor 1015 for calculation.

Alternatively, as another embodiment, the footage monitor includes a rope measurement calculator 500, a pull rope 501 automatically wound in the rope measurement calculator 500 is disposed in the rope measurement calculator 500, the lower end of the pull rope 501 is wound in the rope measurement calculator 500, and the upper end of the pull rope 501 is fixedly connected to the mounting plate 600.

The casing 204 is embedded in the drill hole, the fixing rod 206 is arranged outside the casing 204, the rope measurement calculator 500 is fixed on the fixing rod 206, and the pull rope 501 is in a tensioned and straight state, so that the installation plate 600 falls each time along with the drilling of the drilling machine 200, the falling length of the pull rope 501 can be recovered by the pull rope 501 calculator through the pull rope 501, the data processor 1015 transmits the falling length data of the pull rope 501 to the server 100, the falling length of the drilling machine 200 can be obtained through calculation, the falling data can be monitored and recorded by the laser range finder 700, and the falling data can be transmitted to the server 100 through the data processor 1015 for calculation, and the drilling footage of the drill rod 201 can be obtained.

In this embodiment, the end of the fixing rod 206 is provided with a connecting cylinder 205, the connecting cylinder 205 is provided with a communication hole for communicating with the inside of the sleeve 204, the inner end of the fixing rod 206 is butted against the outer side wall of the connecting cylinder 205, the outer end of the fixing rod 206 extends outwards away from the connecting cylinder 205, and the fixing rod 206 and the communication hole are vertically arranged. The lower part of the connecting cylinder 205 is inserted into the upper end of the casing 204, and the communication hole is communicated with the inside of the casing 204 in an up-and-down alignment manner, and the drill rod 201 can enter the inside of the casing 204 through the communication hole of the connecting cylinder 205.

The inner end of the fixing rod 206 is provided with a downwardly extending elastic clip, which has a clamping gap with the outer sidewall of the connecting cylinder 205, when the lower portion of the connecting cylinder 205 is inserted into the upper end of the sleeve 204, the sidewall of the sleeve 204 is embedded in the clamping gap, and the sleeve 204 is tightly clamped by the elastic clip, thereby stabilizing the position of the fixing rod 206.

Be provided with two trips in the outside of connecting cylinder 205, two trips are the setting that deviates from with foretell tight clearance of clamp, and the upper end fixed connection of two trips is on the lateral wall of connecting cylinder 205, and the lower extreme of two trips inclines to arrange in opposite directions, and back in the sleeve pipe 204 was emboliaed to the lower part of connecting cylinder 205, the lower extreme block of two trips is on the lateral wall of sleeve pipe 204. Because the lower extreme of two trips is the slope arrangement in opposite directions, like this, realizes the chucking to connecting cylinder 205 opposite directions from each other, cooperation elasticity clamping piece for connecting cylinder 205 is connected on sleeve pipe 204 firmly.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (6)

1. The monitoring structure for the rotating speed of the drilling machine is characterized by comprising a rotating speed monitor and a transmission structure, wherein the transmission structure is provided with a transmission shaft, and the transmission structure is provided with an installation plate which protrudes outwards and is horizontally arranged; the transmission structure is provided with an outward horizontally arranged mounting plate, the rotating speed monitor is vertically arranged on the mounting plate and provided with a monitoring head, and the monitoring head is positioned on the outer side of the transmission shaft, is positioned above the transmission shaft and is arranged towards the transmission shaft; the top of transmission shaft is equipped with the sighting rod of erectting the form, the sighting rod skew the rotation center of transmission shaft arranges, the sighting rod with nearest distance between the monitoring head is greater than 1cm and is less than 3cm, the sighting rod with furthest distance between the monitoring head is greater than 3 cm.

2. The drilling machine speed supervision structure according to claim 1, wherein the lower part of the speed monitor is extended downwards with an insertion rod, the mounting plate is provided with a jack with an upper end opened, and the insertion rod is inserted in the jack.

3. The rig speed supervision structure according to claim 2, wherein an outer side wall of the inserted rod is provided with a guide groove strip, the guide groove strip is arranged along an axial extension of the inserted rod and penetrates through a bottom of the inserted rod; the inner side wall of the jack is convexly provided with an elastic strip, the elastic strip is arranged along the axial extension of the jack, and the elastic strip is embedded into the guide groove strip.

4. The monitoring structure for the rotation speed of a drilling machine according to claim 3, wherein the outer side wall of the inserted rod is provided with two guide groove strips which are arranged at intervals, and the inner side wall of the jack is convexly provided with two elastic strips which are arranged at intervals.

5. The rig speed supervisory structure of claim 4, wherein outer ends of the spring bars are curved and outer ends of two of the spring bars are curved away from each other.

6. The monitoring structure for the rotation speed of a drilling machine according to any one of claims 1 to 5, wherein a reset block is convexly arranged on the transmission shaft, the reset block is provided with an abutting surface abutting on the outer side of the mark post, and the abutting surface is obliquely arranged inwards along the direction from bottom to top.

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