CN212844439U - Sampling device for analyzing gas content in rock mass - Google Patents

Abstract

The sampling device comprises an underframe arranged on the ground, a mounting frame arranged on the underframe, a lifting assembly arranged on the mounting frame, an installation assembly arranged on the lifting assembly and used for installing the drill pipe, and a driving assembly arranged on the lifting assembly and used for driving the drill pipe to rotate; the lifting assembly is provided with a second mounting plate, the mounting assembly comprises a mounting sleeve arranged on the second mounting plate and a connecting sleeve rotatably connected to the mounting sleeve, and the rotating axis of the connecting sleeve is horizontally arranged; a positioning component for positioning the connecting sleeve is arranged between the connecting sleeve and the mounting sleeve; the driving assembly is connected with the mounting sleeve to drive the mounting sleeve to rotate. This application has and installs comparatively convenient effect to the drill pipe.

Description

Sampling device for analyzing gas content in rock mass

Technical Field

The application relates to the field of geological exploration, in particular to a sampling device for analyzing gas content in rock mass.

Background

Shale gas is rich in organic matters, mature dark shale or high-carbon shale, and due to the adsorption effect of the organic matters or the existence of cracks and matrix pores in rocks, the shale gas accumulates and stores a certain amount of natural gas, when the rock mass is detected to determine whether the rock mass contains the natural gas or the content of the natural gas, the rock mass needs to be sampled to detect the gas content in the rock mass, and the sampling device is a device for sampling the rock mass.

When the sampling device is used for sampling, generally, a drill pipe is installed on the sampling device, the drill pipes are installed and connected to a driving piece fixed on the sampling device, the drill pipes are driven to rotate through the driving piece, the rock is drilled and sampled, in the sampling process, a plurality of drill pipes are needed to be used for drilling and sampling, after one of the drill pipes is drilled into the rock, the drill pipe is taken down from the sampling device, a new drill pipe is installed on the sampling device, the front drill pipe and the rear drill pipe are connected, and the drill pipes are driven to rotate through the sampling device to continue sampling.

With respect to the related art in the above, the inventors consider that: when sampling the rock, the drill pipe is generally in vertical state, when installing new drill pipe on sampling device, when carrying out fixed connection to drill pipe and sampling device, the drill pipe is in vertical state, and the connected mode of drill pipe and driving piece generally is threaded connection, and the drill pipe is installed it under vertical state, and operating personnel grips the drill pipe and installs it, and the drill pipe slides downwards easily, grips more difficultly to the drill pipe, and the process of installing it is more inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to make when taking a sample the rock, it is comparatively convenient to carry out the operation of installing to the drill pipe, and this application provides a sampling device for the rock mass gassiness is analytic.

The application provides a rock mass contains gas and analyzes and use sampling device adopts following technical scheme:

a sampling device for analyzing gas content in rock mass comprises an underframe arranged on the ground, a mounting frame arranged on the underframe, a lifting assembly arranged on the mounting frame, a mounting assembly arranged on the lifting assembly and used for mounting a drill pipe, and a driving assembly arranged on the lifting assembly and used for driving the drill pipe to rotate; the lifting assembly is provided with a second mounting plate, the mounting assembly comprises a mounting sleeve arranged on the second mounting plate and a connecting sleeve rotatably connected to the mounting sleeve, and the rotating axis of the connecting sleeve is horizontally arranged; a positioning component for positioning the connecting sleeve is arranged between the connecting sleeve and the mounting sleeve; the driving assembly is connected with the mounting sleeve to drive the mounting sleeve to rotate.

Through adopting above-mentioned technical scheme, when using this sampling device to take a sample to the rock mass, place predetermined position department with this sampling device, later with on the drill pipe is installed the adapter sleeve that corresponds, when installing the drill pipe, rotate connecting sleeve, make connecting sleeve rotate to horizontal position, when screwing up the drill pipe on connecting sleeve, the drill pipe is in the horizontality, when gripping the drill pipe, the phenomenon of slippage is difficult to appear to the drill pipe, grip comparatively laborsaving and convenient to the drill pipe, the process of installing is carried out to the drill pipe promptly is comparatively convenient.

Preferably, two opposite sides of the mounting sleeve are fixedly connected with first connecting plates, two opposite sides of the connecting sleeve are respectively and fixedly connected with second connecting plates, and the two second connecting plates are positioned between the two first connecting plates; a rotating shaft is arranged between the connecting sleeve and the mounting sleeve, penetrates through the two first connecting plates and the second connecting plate and is positioned at the edge of one side of each of the first connecting plate and the second connecting plate; the two positioning assemblies are respectively arranged on the two first connecting plates, and the positioning assemblies are positioned on one side, opposite to the rotating shaft, of the first connecting plates; the positioning assembly comprises a U-shaped plate fixed on the first connecting plate and a positioning rod connected to the U-shaped plate in a sliding manner; two positioning holes are respectively formed in the second connecting plate, and the end parts of the positioning rods are inserted into the positioning holes; when the connecting sleeve is in a vertical state and a horizontal state, the positioning rod is aligned with the two positioning holes respectively.

Through adopting above-mentioned technical scheme, use locating component to fix the second connecting plate, fix connecting sleeve's position promptly, the locating lever is in vertical state under the state that one of them locating hole is aligned, when installing the drilling pipe, connecting sleeve rotates to the horizontality, and the locating lever aligns with another locating hole, fixes connecting sleeve at the horizontality, later when installing the drilling pipe, need not support connecting sleeve, and the process of installing the drilling pipe is more convenient.

Preferably, the U-shaped plate comprises a mounting portion and connecting portions fixedly connected to two ends of the mounting portion, and the connecting portions are fixedly connected to the first connecting plate; a retaining ring is fixedly connected to the part of the positioning rod, which is positioned between the mounting part and the first connecting plate; a spring is sleeved on the positioning rod and positioned between the baffle ring and the mounting part; one end of the positioning rod, which is far away from the first connecting plate, penetrates through the mounting part, and the end part of the positioning rod, which penetrates through the mounting part, is fixedly connected with a limiting plate.

Through adopting above-mentioned technical scheme, when adjusting the connecting sleeve position, the pulling limiting plate, drive the locating lever and take out from the locating hole that corresponds, later rotate the connecting sleeve, rotate the in-process of connecting sleeve, the tip butt of locating lever is on the second connecting plate, when the connecting sleeve rotates to the horizontality, the locating lever inserts under the spring action in the locating hole that corresponds, fix the connecting sleeve, it is comparatively convenient to carry out the operation of fixing to the connecting sleeve, effect through the spring, guarantee the stability of locating lever insertion in the locating hole, it is more stable to the fixing of connecting sleeve promptly.

Preferably, the mounting frame comprises two guide rods fixed on the bottom frame and a transverse plate fixed at the upper ends of the two guide rods; the lifting assembly comprises a lifting block which is connected to the two guide rods in a sliding mode, a screw which is rotatably supported on the transverse plate and in threaded connection with the lifting block, and a hand wheel which is fixed to the end portion of the screw.

Through adopting above-mentioned technical scheme, drive the screw rod through rotating the hand wheel and rotate, through screw rod and elevator screw-thread fit, drive the elevator and go up and down, at the in-process that carries out work, it is comparatively convenient to carry out the adjustment operation to the upper and lower position of elevator.

Preferably, a rotating block is rotatably connected in the lifting block, the rotating block is in threaded connection with the screw, a speed reducer is arranged between the rotating block and the driving assembly, and the driving assembly drives the rotating block to rotate through the speed reducer; the hand wheel is provided with a fixed bolt for fixing the hand wheel.

Through adopting the above-mentioned technical scheme, accomplish the installation back of drill pipe, drive the screw rod through rotating the hand wheel and rotate, in order to drive the elevator removal, make the lower extreme of drill pipe remove to predetermined position department, afterwards, use fixed bolt to fix the hand wheel, drive the turning block through drive assembly and rotate, through turning block and screw rod cooperation, it removes to drive the elevator, in-process carrying out work, the process that the elevator removed is comparatively stable, need not think to operate, the process operation of working at all is comparatively convenient, and simultaneously, carry out preliminary adjustment to the position of drill pipe through the hand wheel, it is comparatively convenient and accurate to its adjustment.

Preferably, a positioning plate is fixed on the hand wheel, and a fixing bolt is arranged on the positioning plate in a penetrating manner; the transverse plate is provided with a positioning groove at the position corresponding to the fixing bolt, the fixing bolt penetrates through the positioning plate and is inserted into the positioning groove, and the side wall of the positioning groove is fixedly connected with a rubber pad.

Through adopting above-mentioned technical scheme, pass the locating plate with fixing bolt and insert the constant head tank in, it is comparatively convenient to carry out the operation of fixing to the hand wheel, simultaneously, through setting up the rubber pad in the location is wiped, at the in-process of this sampling device work, reduces the phenomenon that fixing bolt rocked in the constant head tank to appear, and is more stable to the fixed of hand wheel.

Preferably, a plurality of walking assemblies are arranged on the underframe and are symmetrically arranged on two opposite sides of the underframe; the walking assembly comprises an adjusting plate connected to the underframe and wheels supporting and adjusting the plate; the adjusting plate adjusts the position of the wheel, and the wheel and the underframe support the sampling device respectively.

Through adopting above-mentioned technical scheme, set up the running gear on the chassis, at the in-process of adjusting this sampling device's position, support this sampling device through the running gear, can be comparatively convenient adjust its position, operate comparatively laborsaving and convenient.

Preferably, the positions of the underframe corresponding to the adjusting plates are respectively and fixedly connected with clamping plates; the adjusting plate is rotationally connected to the bottom frame; when the adjusting plate is attached to the clamping plate and the adjusting plate is positioned on the lower side of the clamping plate, the wheel supports the sampling device.

Through adopting above-mentioned technical scheme, when adjusting this walking subassembly, rotate the regulating plate for the regulating plate rotates the downside of screens board and the position department that screens board pasted, supports this sampling device, and it is comparatively convenient to remove it, when removing the position department of work with this sampling device, rotates the regulating plate and makes the wheel leave ground, makes the chassis place subaerial, reduces the phenomenon that this sampling device rocked appearing in the in-process that carries out work.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the drill pipe is installed, the connecting sleeve is rotated to the horizontal position, and then when the drill pipe is fixed on the connecting sleeve, the drill pipe is in the horizontal state, the drill pipe is installed, the drill pipe is held in a labor-saving and convenient manner, the drill pipe is not easy to slide, and the drill pipe is installed conveniently;

2. after the drill pipe is installed through the lifting assembly, the upper position and the lower position of the lifting block are adjusted by rotating the hand wheel, the lower end of the drill pipe is adjusted to a preset position, then the position of the hand wheel is fixed through the fixing bolt, the driving assembly drives the rotating block to rotate through the speed reducer, and further drives the lifting block to move, in the working process, the position of the lifting block does not need to be adjusted, the stability of the lifting block moving process is guaranteed, and the working process is convenient;

3. through the locating component who sets up, when adjusting connecting sleeve's position, it is comparatively convenient to operate, and the locating lever inserts corresponding locating hole under the effect of spring in to fixing connecting sleeve, fixing connecting sleeve respectively at vertical and horizontality, it is comparatively convenient to carry out the operation of fixing to it, guarantees that the locating lever inserts the stability in the locating hole, and is comparatively stable to connecting sleeve's fixed.

Drawings

FIG. 1 is a schematic view of the structure of a sampling device;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic view showing the connection result of the driving assembly;

FIG. 4 is an enlarged schematic view of portion B of FIG. 3;

FIG. 5 is a schematic view of the positioning assembly;

FIG. 6 is an enlarged schematic view of portion C of FIG. 5;

FIG. 7 is a sectional view for showing the structure of the rotary block;

FIG. 8 is a schematic view showing the structure of the fixing pin;

fig. 9 is an enlarged schematic view of a portion D in fig. 8.

Description of reference numerals: 1. a chassis; 11. a handle; 2. a mounting frame; 21. a guide bar; 22. a transverse plate; 221. positioning a groove; 23. fixing the bolt; 3. a lifting assembly; 31. a lifting block; 311. a guide hole; 312. a mounting cavity; 32. a screw; 33. a hand wheel; 331. positioning a plate; 34. a first mounting plate; 35. a second mounting plate; 36. rotating the block; 4. mounting the component; 41. installing a sleeve; 42. a connecting sleeve; 43. a driving wheel; 44. a first connecting plate; 45. a second connecting plate; 451. positioning holes; 46. a rotating shaft; 5. a drive assembly; 51. a gearbox; 52. a driver; 53. a drive belt; 54. a speed reducer; 55. a bevel gear; 6. a positioning assembly; 61. a U-shaped plate; 611. an installation part; 612. a connecting portion; 62. positioning a rod; 63. a spring; 64. a baffle ring; 65. a limiting plate; 7. a rubber pad; 8. a walking assembly; 81. an adjusting plate; 82. a wheel; 83. a clamping plate; 9. and (4) a water pump.

Detailed Description

The present application is described in further detail below with reference to figures 1-9.

The embodiment of the application discloses sampling device for analyzing gas content in rock mass. Referring to fig. 1, the sampling device includes chassis 1 that sets up on the ground, vertical mounting bracket 2 of fixing on chassis 1, the lifting unit 3 of setting on mounting bracket 2, set up and be used for carrying out installation fixed installation component 4 and the setting on lifting unit 3 and be used for driving drill pipe pivoted drive assembly 5 on lifting unit 3 to the drill pipe: a handle 11 is fixed on the underframe 1; the mounting frame 2 comprises a guide rod 21 arranged on the bottom frame 1 and a transverse plate 22 horizontally fixed at the upper end of the guide rod 21; two guide rods 21 are vertically fixed at opposite positions on two sides of the underframe 1 respectively; both ends of the cross plate 22 are fixed to the upper end surfaces of the two guide rods 21, respectively.

Referring to fig. 1, the lifting assembly 3 includes a lifting block 31 slidably connected to the two guide rods 21 and a screw 32 disposed on the transverse plate 22 and in threaded engagement with the lifting block 31; two ends of the lifting block 31 are respectively provided with a guide hole 311, the two guide rods 21 respectively penetrate through the corresponding guide holes 311, and the guide rods 21 are connected with the lifting block 31 in a sliding manner; the screw rod 32 is vertically arranged, the upper end of the screw rod 32 is rotatably supported on the transverse plate 22, the upper end of the screw rod 32 penetrates to the upper end of the transverse plate 22, and a hand wheel 33 is fixedly connected to the end part of the screw rod 32, which is located at the upper end of the transverse plate 22.

Referring to fig. 3 and 4, a first mounting plate 34 is horizontally and fixedly connected to the lower edge of the lifting block 31; the driving assembly 5 comprises a gearbox 51 fixed on the first mounting plate 34 and a driving machine 52 mounted on the gearbox 51; the driving machine 52 may be a diesel engine, an electric motor, or the like; a second mounting plate 35 is fixedly connected to the lower side edge of the side surface of the lifting block 31 opposite to the first mounting plate 34; the mounting assembly 4 comprises a mounting sleeve 41 rotatably supported on the second mounting plate 35 and a connecting sleeve 42 rotatably connected to the mounting sleeve 41, and a rotating shaft 46 of the connecting sleeve 42 is horizontally arranged; a driving wheel 43 is fixedly connected to the outer peripheral surface of the mounting sleeve 41, and a driving belt 53 is arranged between the output shaft of the gearbox 51 and the driving wheel 43 in a tensioning manner.

Referring to fig. 5, the lower end of the outer circumferential surface of the mounting sleeve 41 is fixedly connected with first connecting plates 44, and two first connecting plates 44 are respectively located at two opposite sides of the outer circumferential surface of the mounting sleeve 41; the upper end of the peripheral surface of the connecting sleeve 42 is fixedly connected with a second connecting plate 45, and two second connecting plates 45 are respectively positioned on two opposite sides of the peripheral surface of the connecting sleeve 42; the two second connecting plates 45 are positioned between the two first connecting plates 44, and the second connecting plates 45 are respectively attached to the corresponding first connecting plates 44; a rotating shaft 46 is arranged between the mounting sleeve 41 and the connecting sleeve 42, the rotating shaft 46 is horizontally arranged, and the rotating shaft 46 penetrates through the two first connecting plates 44 and the two second connecting plates 45; a positioning assembly 6 for fixing the position thereof is provided between the connecting sleeve 42 and the mounting sleeve 41.

Referring to fig. 5 and 6, the upper portion of the second connecting plate 45 is attached to the lower portion of the first connecting plate 44, and the rotating shaft 46 is located at the edge positions of the first connecting plate 44 and the second connecting plate 45; two positioning components 6 are respectively arranged at the lower side edge positions on the two first connecting plates 44, and the positioning components 6 are positioned at one side far away from the rotating shaft 46; the positioning assembly 6 comprises a U-shaped plate 61 fixed on the first connecting plate 44, a positioning rod 62 connected on the U-shaped plate 61 in a sliding way, and a spring 63 arranged between the positioning rod 62 and the U-shaped plate 61; two positioning holes 451 are respectively formed in corresponding positions on the second connecting plate 45, and when the end portions of the positioning rods 62 are embedded in the two positioning holes 451, the connecting sleeves 42 are respectively in a vertical state and a horizontal state; the U-shaped plate 61 includes a mounting portion 611 disposed in parallel with the first connection plate 44 and connection portions 612 fixed to both ends of the mounting portion 611, and the positioning rod 62 is slidably connected to the mounting portion 611; a retainer ring 64 is fixed to a portion of the positioning rod 62 located between the mounting portion 611 and the first connecting plate 44; the spring 63 is sleeved on the positioning rod 62 and is positioned between the retaining ring 64 and the mounting part 611, and two ends of the spring 63 are respectively connected with the retaining ring 64 and the mounting part 611; a stopper plate 65 is fixed to an end of the positioning rod 62 on the side of the mounting portion 611 away from the first connection plate 44.

When the sampling device is used for sampling, the device is firstly moved to a corresponding position, at the moment, the connecting sleeve 42 is in a vertical state, the mounting sleeve 41 is adjusted, the rotating shaft 46 is positioned at one side close to the mounting frame 2, the pull rods at two sides are pulled, the positioning rod 62 is pulled out from the corresponding positioning hole 451, at the moment, the baffle ring 64 compresses the spring 63, the rotating sleeve is rotated towards the direction far away from the mounting frame 2, the connecting sleeve 42 is rotated to a horizontal state, the positioning rod 62 is aligned with the corresponding positioning hole 451, the end part of the positioning rod 62 is inserted into the positioning hole 451 under the action of the spring 63, so that the connecting sleeve 42 is kept in the horizontal state, then, the drill pipe is screwed and mounted on the connecting sleeve 42, the mounting sleeve 41 is driven to rotate by the driving component 5, the drill pipe is driven to rotate, and meanwhile, the screw rod 32 is, the lifting block 31 is driven to lift in the vertical direction, and rock sampling is carried out; when the drill pipe is installed, the drill pipe is kept in a horizontal state, the drill pipe is conveniently held, the phenomenon that the drill pipe easily slides down when being located in a vertical state is reduced, and the process of installing the drill pipe is labor-saving and convenient.

Referring to fig. 3 and 7, a mounting cavity 312 is formed in the lifting block 31, a rotating block 36 is arranged in the mounting cavity 312, and the rotating block 36 is rotatably connected to the lifting block 31; the screw 32 passes through the rotating block 36 and is in threaded connection with the rotating block 36; a speed reducer 54 is arranged between the gearbox 51 and the rotating block 36, the input end of the speed reducer 54 is connected with the output end of the speed changing direction through a transmission belt 53, the input end of the speed reducer 54 penetrates into the mounting cavity 312, and a bevel gear 55 is arranged between the input end of the speed reducer 54 and the rotating block 36 and used for driving the rotating block 36 to rotate; referring to fig. 8, the horizontal plate 22 is provided with a fixing plug 23 for fixing the hand wheel 33.

When sampling is carried out, the drill pipe is installed on the connecting sleeve 42, at the moment, the driver 52 stops working, the hand wheel 33 is rotated, the lifting block 31 is driven to descend by the matching of the screw rod 32 and the rotating block 36, the height of the lifting block 31 is manually adjusted to a proper position, the hand wheel 33 is fixed by using a fixing part, the driver 52 is started, the mounting sleeve 41 is driven to rotate, the rotating block 36 is driven to rotate, at the moment, the screw rod 32 is in a fixed state, the lifting block 31 is driven to ascend and descend by the matching of the rotating block 36 and the screw rod 32, sampling is carried out, the hand wheel 33 does not need to be manually rotated to drive the lifting block 31 to ascend and descend in the sampling process, labor is saved, meanwhile, the speed of the lifting block 31 in the ascending and descending process can be kept stable, the drilling quality is guaranteed, and the lifting block 31 can be adjusted to a preset position by the hand wheel, the adjustment is more convenient, reduces the phenomenon that the drill pipe collides and is damaged in the process of adjusting the height of the lifting block 31, and ensures the accuracy of the adjustment.

Referring to fig. 8 and 9, the hand wheel 33 is provided with a positioning plate 331, and the fixing bolt 23 is arranged on the positioning plate 331; a positioning groove 221 is formed in the position, corresponding to the fixing bolt 23, of the transverse plate 22, and the fixing bolt 23 penetrates through the positioning plate 331 and is inserted into the positioning groove 221 to fix the hand wheel 33; a rubber pad 7 is fixedly connected to the side wall in the positioning groove 221.

Referring to fig. 1 and 2, four walking assemblies 8 are arranged on the chassis 1, and are respectively arranged on two opposite sides of the chassis 1, and two walking assemblies 8 are arranged on each side; the walking assembly 8 comprises an adjusting plate 81 which is rotatably connected on the underframe 1 and a wheel 82 which rotatably supports the end part of the adjusting plate 81; the positions, corresponding to the adjusting plate 81, on the side surface of the bottom frame 1 are respectively and fixedly connected with a clamping plate 83, the adjusting plate 81 is rotated, so that the adjusting plate 81 is enabled to be attached to the clamping plates 83, when the adjusting plate 81 is positioned at the lower side of the clamping plate 83, the adjusting plate 81 is positioned on a horizontal rotary table, at the moment, the lower side of the wheel 82 is abutted to the ground, the bottom frame 1 is supported, and the sampling device can be conveniently moved; rotate regulating plate 81 to the one side of keeping away from the screens board 83 that corresponds for chassis 1 butt is subaerial, when taking a sample, can guarantee that sampling device places subaerial stability, is difficult to appear removing, and the process of adjusting is carried out to walking subassembly 8 state is comparatively convenient.

Referring to fig. 1, a water pump 9 is fixed on the second mounting plate 35, and a water outlet end of the water pump 9 is communicated to the inside of the mounting sleeve 41; in the process of working and sampling, the water pump 9 works, water flows into the installation sleeve 41, water flows into the drill pipe, the drill pipe is cooled, the phenomenon that the temperature of the drill pipe is too high in the working process is reduced, and meanwhile, the phenomenon that dust is generated in the process of drilling a hole in a rock body can be reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a rock mass contains gas and analyzes and use sampling device which characterized in that: the drilling machine comprises an underframe (1) arranged on the ground, a mounting frame (2) arranged on the underframe (1), a lifting assembly (3) arranged on the mounting frame (2), a mounting assembly (4) arranged on the lifting assembly (3) and used for mounting a drilling pipe, and a driving assembly (5) arranged on the lifting assembly (3) and used for driving the drilling pipe to rotate; a second mounting plate (35) is arranged on the lifting assembly (3), the mounting assembly (4) comprises a mounting sleeve (41) arranged on the second mounting plate (35) and a connecting sleeve (42) rotatably connected to the mounting sleeve (41), and a rotating shaft (46) of the connecting sleeve (42) is horizontally arranged; a positioning component (6) for positioning the connecting sleeve (42) and the mounting sleeve (41) is arranged between the connecting sleeve and the mounting sleeve; the driving component (5) is connected with the mounting sleeve (41) to drive the mounting sleeve (41) to rotate.

2. The sampling device for gas analysis of rock mass according to claim 1, characterized in that: two opposite sides of the mounting sleeve (41) are fixedly connected with first connecting plates (44), two opposite sides of the connecting sleeve (42) are respectively fixedly connected with second connecting plates (45), and the two second connecting plates (45) are positioned between the two first connecting plates (44); a rotating shaft (46) is arranged between the connecting sleeve (42) and the mounting sleeve (41), the rotating shaft (46) penetrates through the two first connecting plates (44) and the second connecting plate (45), and the rotating shaft (46) is located at the position of one side edge of the first connecting plate (44) and the second connecting plate (45); the two positioning components (6) are respectively arranged on the two first connecting plates (44), and the positioning components (6) are positioned on one side, opposite to the rotating shaft (46), of the first connecting plates (44); the positioning assembly (6) comprises a U-shaped plate (61) fixed on the first connecting plate (44) and a positioning rod (62) connected to the U-shaped plate (61) in a sliding mode; two positioning holes (451) are respectively formed in the second connecting plate (45), and the end parts of the positioning rods (62) are inserted into the positioning holes (451); when the connecting sleeve (42) is in the vertical state and the horizontal state, the positioning rod (62) is respectively aligned with the two positioning holes (451).

3. The sampling device for gas analysis of rock mass according to claim 2, characterized in that: the U-shaped plate (61) comprises a mounting part (611) and connecting parts (612) fixedly connected to two ends of the mounting part (611), and the connecting parts (612) are fixedly connected to the first connecting plate (44); a retaining ring (64) is fixedly connected to the part of the positioning rod (62) between the mounting part (611) and the first connecting plate (44); a spring (63) is sleeved on the positioning rod (62), and the spring (63) is positioned between the stop ring (64) and the mounting part (611); one end of the positioning rod (62) far away from the first connecting plate (44) penetrates through the mounting part (611), and a limiting plate (65) is fixedly connected to the end of the penetrating mounting part (611).

4. The sampling device for gas analysis of rock mass according to claim 1, characterized in that: the mounting rack (2) comprises two guide rods (21) fixed on the bottom frame (1) and a transverse plate (22) fixed at the upper ends of the two guide rods (21); the lifting component (3) comprises a lifting block (31) which is connected with the two guide rods (21) in a sliding way, a screw rod (32) which is rotatably supported on the transverse plate (22) and is in threaded connection with the lifting block (31), and a hand wheel (33) which is fixed at the end part of the screw rod (32).

5. The sampling device for gas analysis of rock mass according to claim 4, characterized in that: a rotating block (36) is rotatably connected in the lifting block (31), the rotating block (36) is in threaded connection with the screw (32), a speed reducer (54) is arranged between the rotating block (36) and the driving assembly (5), and the driving assembly (5) drives the rotating block (36) to rotate through the speed reducer (54); the hand wheel (33) is provided with a fixed bolt (23) for fixing the hand wheel (33).

6. The sampling device for analyzing the gas content in a rock mass according to claim 5, characterized in that: a positioning plate (331) is fixed on the hand wheel (33), and a fixing bolt (23) penetrates through the positioning plate (331); the transverse plate (22) is provided with a positioning groove (221) at a position corresponding to the fixing bolt (23), the fixing bolt (23) penetrates through the positioning plate (331) to be inserted into the positioning groove (221), and the side wall of the positioning groove (221) is fixedly connected with a rubber pad (7).

7. The sampling device for gas analysis of rock mass according to claim 1, characterized in that: the chassis (1) is provided with a plurality of walking components (8), and the walking components (8) are symmetrically arranged on two opposite sides of the chassis (1); the walking assembly (8) comprises an adjusting plate (81) connected to the underframe (1) and wheels (82) supporting and adjusting plate (81); the adjusting plate (81) adjusts the position of the wheel (82), so that the wheel (82) and the chassis (1) support the sampling device respectively.

8. The sampling device for gas analysis of rock mass according to claim 7, characterized in that: clamping plates (83) are respectively fixedly connected to the positions, corresponding to the adjusting plates (81), of the bottom frame (1); the adjusting plate (81) is rotatably connected to the bottom frame (1); when the adjusting plate (81) is attached to the clamping plate (83) and the adjusting plate (81) is positioned at the lower side of the clamping plate (83), the wheel (82) supports the sampling device.

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