A sampling device for coal mine grouting filling area

Abstract

The present invention belongs to the field of mining area management and detection technology, and specifically discloses a sampling device for coal mine grouting filling area, including a horizontal base frame, support rods are vertically fixed and symmetrically arranged on the upper sides of the two edges of the horizontal base frame, a mounting plate is horizontally fixed and arranged on the upper end of the support rods, and a limit rod is horizontally and symmetrically fixed and arranged on the middle of the front end of the mounting plate, and a vertical limit follow-down mechanism is vertically slidably arranged on the front end of the limit rod, and a passive clamping release mechanism and a hammer mechanism are vertically slidably arranged on the vertical limit follow-down mechanism from top to bottom, respectively, and an active unhooking mechanism is fixed on the upper part of the vertical limit follow-down mechanism, and a penetration sampling mechanism is arranged directly below the vertical limit follow-down mechanism, a drop distance feedback mechanism is arranged on one of the limit rods, and a reciprocating winch mechanism is arranged on the mounting plate. The present invention can maintain a constant drop distance of the drop hammer during the standard penetration test sampling process, and provide real-time feedback reminders after the standard depth is penetrated, effectively avoiding human misjudgment, and improving the accuracy and reliability of the test results.

Description

Technical Field

[0001] The invention belongs to the technical field of mining area management and detection, and specifically refers to a sampling device for a coal mine grouting filling area. Background Art

[0002] In the process of coal mining, in order to prevent the collapse of the goaf and ensure the safety of ground buildings and facilities, grouting filling technology is usually used to backfill the goaf. This technology uses materials to prepare slurry, injects it into the goaf, and solidifies it to form a support body to achieve the purpose of stabilizing the stratum. However, after the grouting filling is completed, it is necessary to test the geological conditions of the filling area to evaluate the filling effect, ensure that the filling quality reaches the expected goal, and provide safety guarantees for subsequent coal mining activities.

[0003] At present, when testing the geological conditions of coal mine grouting filling areas, standard penetrators are generally used for sampling. Standard penetration tests are carried out on site at the same time as sampling, which can effectively avoid sample disturbance, better reflect the complex environment of the goaf, and improve the accuracy of the test results. The penetrator takes out the tested samples for indoor testing to detect other parameters in the samples that are not affected by the penetration test disturbance, so as to further analyze the physical properties of the soil and obtain more comprehensive and accurate sample information.

[0004] In the standard penetration in-situ test, the standard penetrator is placed at a test point at a certain depth underground, and a 63.5kg drop hammer is dropped from a drop distance of 76cm. The standard penetrator is driven into the test point at a fixed depth through a drill pad and a drill rod, and the required number of hammer strikes is counted. When penetrating, the penetrator is first driven into the test point 15cm to avoid the disturbance of the formation when drilling to the test point, and then the total number of hammer strikes for each 15cm penetration into the formation is counted. The experiment is completed after two counts. However, the traditional standard penetration test has obvious shortcomings when it is actually applied to the detection of coal mine grouting filling areas.

[0005] In traditional standard penetration tests, the drop distance of the drop hammer needs to be consistent. However, in actual operation, as the penetrometer and drill rod continue to move downward, the absolute height of the traditional hammer lifting device is fixed, which causes the actual drop distance to increase, affecting the accuracy of the test results.

[0006] The standard penetration test requires recording the number of hammer blows required for every 15 cm of penetration. However, in actual operation, there is a large error in manually judging the penetration depth, and there is no feedback reminder after the standard penetration depth is reached, resulting in inaccurate recording of the number of hammer blows by personnel, affecting the reliability of the final result. Summary of the invention

[0007] In view of the above situation, the present invention provides a sampling equipment for the grouting filling area of ​​a coal mine, which can maintain a constant drop distance of the hammer during the standard penetration test sampling process and provide real-time feedback reminders after penetrating the standard depth, effectively avoiding human misjudgment and improving the accuracy and reliability of the test results.

[0008] The technical solution adopted by the present invention is as follows: The present invention proposes a sampling equipment for the grouting filling area of ​​a coal mine, including a horizontal base frame, support rods are vertically fixed and symmetrically arranged on the upper sides of the two edges of the horizontal base frame, a mounting plate is horizontally fixed on the upper end of the support rod, a limit rod is horizontally and symmetrically fixed on the middle part of the front end of the mounting plate, a vertical limit follow-down mechanism is vertically slidably provided at the front end of the limit rod, a passive clamping release mechanism and a hammer mechanism are vertically slid from top to bottom on the vertical limit follow-down mechanism, an active unhooking mechanism is fixed on the upper part of the vertical limit follow-down mechanism, a penetration sampling mechanism is arranged directly below the vertical limit follow-down mechanism, a drop distance feedback mechanism is arranged on one of the limit rods, and a reciprocating winch mechanism is arranged on the mounting plate.

[0009] Furthermore, the vertical limiting and falling mechanism includes limiting columns, which are arranged in pairs. The upper ends of the limiting columns vertically slide through the front ends of two limiting rods, and a falling ring is horizontally fixed between the lower ends of the limiting columns.

[0010] Furthermore, the passive clamping release mechanism includes a hollow column, which is coaxially arranged above the falling ring, the upper end of the hollow column is closed, the lower part of the side wall of the hollow column is thickened, and the inner side of the side wall of the thickened section of the hollow column is symmetrically provided with a rectangular groove, the rectangular groove points to the axis of the hollow column, a sliding column is arranged in parallel in the rectangular groove, the sliding column and the rectangular groove are arranged at intervals, a sliding block is fixedly provided at one end of the sliding column facing the axis of the hollow column, the sliding block is slidingly arranged in close contact with the rectangular groove, and the other end of the sliding column passes through the hollow column and is fixed A first magnetic block is provided, and a compression spring is provided on the outside of the sliding column in the rectangular groove, and both ends of the compression spring are fixedly connected to the slider and the hollow column respectively. The slider is arranged with an inclined surface at one end facing away from the compression spring, and the inclined surface of the slider faces the axis of the hollow column and is arranged downward. A second guide rod is symmetrically fixedly provided on the outside of the hollow column in a direction perpendicular to the connection direction of the two sliding columns, a slip ring is fixedly provided at one end of the second guide rod, and the slip ring is slidably sleeved on the outside of the limit column. The two slip rings are perpendicular to the direction of the second guide rod and have notches facing each other respectively, and a hanging ring is fixedly provided at the center of the upper end of the hollow column.

[0011] Furthermore, the hammer mechanism includes a drop hammer, which is coaxially arranged between the drop ring and the hollow column. The diameter of the drop hammer is smaller than the inner diameter of the drop ring, so that the drop hammer will not hammer the drop ring. First guide rods are symmetrically fixed on both sides of the upper part of the drop hammer, and one end of the first guide rod is slidably sleeved on the outside of the limit column. A connecting column is coaxially fixed on the upper end of the drop hammer, and a conical clamping block is coaxially fixed on the upper end of the connecting column. The conical clamping block is arranged in the shape of a right upright cone. The shortest distance between the inclined surfaces of the two sliders in the initial state of the compression spring is smaller than the diameter of the lower end surface of the conical clamping block.

[0012] Furthermore, the active unhooking mechanism includes a first fixing rod, which is vertically fixed on one side of the limiting column, and the two first fixing rods are arranged in parallel with their backs to each other. The first fixing rod is located below the limiting rod, and the first fixing rod can pass through the gap on the same side. The two first fixing rods are horizontally and vertically fixed with a second fixing rod at one end, and the two second fixing rods are arranged facing each other. A second magnetic block is vertically fixed at one end of the second fixing rod, and the second magnetic block is in the same vertical plane as the first magnetic block on the same side, and the second magnetic block is located on the outside of the first magnetic block.

[0013] Furthermore, the penetration sampling mechanism includes a hammer pad, which is coaxially arranged below the follow-down ring. The diameter of the hammer pad is smaller than the inner diameter of the follow-down ring. A connecting plate is coaxially fixed to the lower side of the hammer pad. The diameter of the connecting plate is larger than the inner diameter of the follow-down ring so that the connecting plate can support the follow-down ring. A drill rod that can be spliced ​​and lengthened is coaxially fixed to the lower side of the connecting plate, and a penetrator is coaxially fixed to the lower side of the drill rod.

[0014] The U-shaped clip is arranged on the same side as the opening, and the two side sections of the U-shaped clip are tightened. The U-shaped clip is made of elastic material, so that the U-shaped clip can be engaged with the limiting column by deformation. The inner side of the U-shaped clip is provided with an anti-skid layer, so that the U-shaped clip can be firmly fixed on the limiting column. An extension rod is fixedly arranged on the middle part of the U-shaped clip laterally and horizontally, and a gear rod is fixedly arranged on one end of the extension rod horizontally and vertically. When the ruler is in the vertical state, it is in close contact with the gear rod between the gear rod and the U-shaped clip.

[0015] Furthermore, the reciprocating winch mechanism includes a motor, a support plate and a rotating shaft. The motor is fixedly arranged on the upper side of the mounting plate. The motor is arranged to rotate reciprocatingly so that the lifting rope is rolled up when the motor rotates forward and the lower end of the lifting rope moves downward when the motor rotates reversely. The support plates are fixedly arranged on the upper side of the mounting plate at intervals. A reel is rotatably provided between the support plates. The output end of the motor passes through adjacent support plates and is coaxially fixedly connected to the reel. The reel is wound with a lifting rope. The rotating shaft is fixedly arranged between two limit rods. A guide wheel is coaxially rotated in the middle part of the rotating shaft for guiding the vertical movement of the lifting rope. One end of the lifting rope passes closely around the guide wheel at the top and is vertically downwardly fixedly connected to the lifting ring.

[0016] Furthermore, the facing surfaces of the first magnetic block and the second magnetic block on the same side are arranged with different magnetic poles, so that the first magnetic block and the second magnetic block can attract each other when they are close to each other.

[0017] Furthermore, the limit column always slides in the limit rod during the penetration sampling process of the penetrometer, and the highest fixed hoisting position of the hollow column by the lifting rope is higher than the active unhooking mechanism at the initial position, so that the passive clamping release mechanism can always pass upward and trigger the active unhooking mechanism, and the lowest fixed falling position of the lower end of the lifting rope is always lower than the upper end position of the falling hammer in contact with the hammer pad, so that the falling hammer can still contact with the hollow column after each descent of the hammer pad.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows:

[0019] (1) When the motor rotates forward, the drum winds up the rope and lifts the hollow column. Since the slider is located below the conical block at this time, and the shortest distance between the two slider inclined surfaces is smaller than the diameter of the lower end surface of the conical block, the slider lifts the conical block and the drop weight upward, and continues to lift until the first magnetic block and the second magnetic block are close to each other. The second magnetic block sucks the first magnetic block outward, so that the slide column overcomes the pressure of the compression spring and moves outward, so that the slider no longer supports the conical block, and the drop weight begins to fall freely. By reasonably setting the fixed position of the first fixing rod on the limit column, the drop weight is lifted 76c m later, the active unhooking mechanism is triggered to realize the free fall of the drop hammer. Since the follow-drop ring is separated from the hammer pad and is located above the hammer pad, the drop hammer will only hit the hammer pad and transmit the force downward, avoiding hammering together with the follow-drop ring and the limit column to share the hammering kinetic energy. Since the relative positions of the first fixed rod, the follow-drop ring and the hammer pad are fixed, the drop hammer in contact with the hammer pad is lifted 76cm each time and is free-fallen by the active unhooking mechanism, ensuring that the drop distance and kinetic energy of the drop hammer hitting the hammer pad are constant each time, strictly meeting the penetration standard, and making the test results more accurate.

[0020] (2) During the hammering process, the position of the limit rod and the rotating ruler is fixed. Initially, the stop rod is in close contact with the counterweight. The limit column moves downward, driving the U-shaped card and the stop rod to move downward. By setting the distance between the opening and the counterweight, the stop rod follows the U-shaped card, the limit column and the penetrator to descend by 15 cm. The stop rod moves to the opening, causing the rotating ruler to lose support. Under the action of the counterweight, the rotating ruler tilts, releasing a significant signal to remind the operator that 15 cm has been penetrated. The position relationship between the U-shaped card and the rotating ruler is reset, and the hammering is continued and the number of hammerings is recorded. The above steps are repeated and the number of hammerings corresponding to the two penetrations of 15 cm is recorded respectively according to the signal feedback. Since the feedback reminder after the penetration of 15 cm is accurate and obvious, the operator can be reminded in time to start recording and record in batches, avoiding human judgment of the penetration depth and avoiding the operator forgetting to record, making the test results more reliable.

[0021] (3) This device adopts a purely mechanical structure, and the mechanical linkage is safe and reliable. The production and maintenance costs are low, and it can be mass-produced. It is suitable for harsh working environments such as field exploration, and avoids the defects of microelectronic mechanisms such as sensors that are easy to break and difficult to repair in the field. This device is very simple to operate and use, the principle is clear, and there is no learning cost, so it can be quickly promoted and applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a sampling device for a coal mine grouting filling area proposed by the present invention.

[0023] Figure 2 for Figure 1 Enlarged view of part A.

[0024] Figure 3 for Figure 1 Enlarged view of part B.

[0025] Figure 4 for Figure 1 Enlarged view of part C.

[0026] Figure 5 This is a schematic diagram of the explosion structure of the position relationship between the drop ring and the hammer pad of a sampling device for the coal mine grouting filling area proposed by the present invention.

[0027] Figure 6 This is a schematic diagram of the exploded structure of the positional relationship between the U-shaped card and the rotating ruler of a sampling device for a coal mine grouting filling area proposed by the present invention.

[0028] Figure 7 A top view of a passive clamping and releasing mechanism of a sampling device for a coal mine grouting filling area proposed by the present invention.

[0029] Figure 8 for Figure 7 Middle DD section view.

[0030] Fig. 9 This is a schematic diagram of the exploded structure of the position relationship between the conical clamping block and the sliding block of a sampling device for the coal mine grouting filling area proposed by the present invention.

[0031] Among them, 1. horizontal base frame, 11. support rod, 12. mounting plate, 13. limit rod, 2. vertical limit follow-down mechanism, 21. limit column, 22. follow-down ring, 3. passive clamping release mechanism, 31. hollow column, 32. rectangular groove, 33. sliding column, 34. first magnetic block, 35. slider, 36. compression spring, 37. lifting ring, 38. second guide rod, 39. sliding ring, 391. notch, 4. hammer mechanism, 41. drop hammer, 42. first guide rod, 43. connecting column, 44. conical block , 5. Active unhooking mechanism, 51. First fixed rod, 52. Second fixed rod, 53. Second magnetic block, 6. Penetration sampling mechanism, 61. Drill rod, 62. Connecting plate, 63. Hammer pad, 64. Penetrator, 7. Drop distance feedback mechanism, 71. Support, 72. Turntable, 73. Counterweight, 74. Opening, 75. U-shaped card, 76. Extension rod, 77. Gear rod, 8. Reciprocating winch mechanism, 81. Motor, 82. Support plate, 83. Reel, 84. Lifting rope, 85. Rotating shaft, 86. Guide wheel.

[0032] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the present invention proposes a sampling device for the grouting filling area of ​​a coal mine, comprising a horizontal base frame 1, support rods 11 are vertically fixed and symmetrically arranged on the upper sides of the two edges of the horizontal base frame 1, a mounting plate 12 is horizontally fixed and arranged on the upper end of the support rod 11, a limit rod 13 is horizontally and symmetrically fixed and arranged on the middle part of the front end of the mounting plate 12, a vertical limit follow-down mechanism 2 is vertically slidably arranged on the front end of the limit rod 13, a passive clamping release mechanism 3 and a hammer mechanism 4 are vertically slidably arranged on the vertical limit follow-down mechanism 2 from top to bottom, an active unhooking mechanism 5 is fixedly arranged on the upper part of the vertical limit follow-down mechanism 2, a penetration sampling mechanism 6 is arranged directly below the vertical limit follow-down mechanism 2, a drop distance feedback mechanism 7 is arranged on one of the limit rods 13, a reciprocating winch mechanism 8 is arranged on the mounting plate 12, and the vertical limit follow-down mechanism 2 comprises limit columns 21, the limit columns 21 are arranged in pairs, the upper ends of the limit columns 21 vertically slide and penetrate the front ends of the two limit rods 13, and a follow-down ring 22 is horizontally fixed between the lower ends of the limit columns 21.

[0036] The passive clamping release mechanism 3 includes a hollow column 31, which is coaxially arranged above the follow-down ring 22. The upper end of the hollow column 31 is closed, and the lower part of the side wall of the hollow column 31 is thickened. A rectangular groove 32 is symmetrically opened on the inner side of the thickened section of the side wall of the hollow column 31, and the rectangular groove 32 points to the axis of the hollow column 31. A sliding column 33 is arranged in parallel in the rectangular groove 32. The sliding column 33 is spaced apart from the rectangular groove 32. A slider 35 is fixedly arranged at one end of the sliding column 33 facing the axis of the hollow column 31. The slider 35 is tightly slidably arranged with the rectangular groove 32. The other end of the sliding column 33 passes through the hollow column 31 and is fixedly provided with a first magnetic block 3 4. A compression spring 36 is provided inside the rectangular groove 32 on the outside of the slide post 33. Two ends of the compression spring 36 are fixedly connected to the slider 35 and the hollow post 31 respectively. The slider 35 is arranged with an inclined surface at one end facing away from the compression spring 36. The inclined surface of the slider 35 faces the axis of the hollow post 31 and is arranged downward. A second guide rod 38 is symmetrically fixedly provided on the outside of the hollow post 31 in a direction perpendicular to the connecting line of the two slide posts 33. A slip ring 39 is fixedly provided at one end of the second guide rod 38. The slip ring 39 is slidably sleeved on the outside of the limit post 21. The two slip rings 39 are perpendicular to the direction of the second guide rod 38 and have notches 391 respectively facing away from each other. A lifting ring 37 is fixedly provided at the center of the upper end of the hollow post 31.

[0037] The hammer mechanism 4 includes a drop hammer 41, which is coaxially arranged between the drop ring 22 and the hollow column 31. The diameter of the drop hammer 41 is smaller than the inner diameter of the drop ring 22. The first guide rods 42 are symmetrically fixed on both sides of the upper part of the drop hammer 41. One end of the first guide rod 42 is respectively slidably sleeved on the outer side of the limit column 21. The upper end of the drop hammer 41 is coaxially fixed with a connecting column 43. The upper end of the connecting column 43 is coaxially fixed with a conical block 44. The conical block 44 is arranged in a right upright cone. The shortest distance between the inclined surfaces of the two sliders 35 in the initial state of the compression spring 36 is smaller than the diameter of the lower end surface of the conical block 44. The active unhooking mechanism 5 includes The first fixing rod 51 is included, and the first fixing rod 51 is vertically fixed on one side of the limiting column 21. The two first fixing rods 51 are arranged in parallel with their backs to each other. The first fixing rod 51 is located below the limiting rod 13. The first fixing rod 51 can pass through the notch 391 on the same side. The second fixing rods 52 are horizontally and vertically fixed on one end of the two first fixing rods 51. The two second fixing rods 52 are arranged facing each other. A second magnetic block 53 is vertically fixed on one end of the second fixing rod 52. The second magnetic block 53 and the first magnetic block 34 on the same side are in the same vertical plane, and the second magnetic block 53 is located on the outside of the first magnetic block 34.

[0038] Among them, the penetration sampling mechanism 6 includes a hammer pad 63, which is coaxially arranged below the drop ring 22, and the diameter of the hammer pad 63 is smaller than the inner diameter of the drop ring 22. A connecting plate 62 is coaxially fixed on the lower side of the hammer pad 63, and the diameter of the connecting plate 62 is larger than the inner diameter of the drop ring 22. A drill rod 61 capable of splicing and lengthening is coaxially fixed on the lower side of the connecting plate 62, and a penetrator 64 is coaxially fixed on the lower side of the drill rod 61. The drop distance feedback mechanism 7 includes a support 71, a rotating ruler 72 and a U-shaped card 75. The support 71 is symmetrically fixed at one end of one of the limit rods 13, and the lower end of the rotating ruler 72 is rotatably arranged between the supports 71. When the rotating ruler 72 is in a vertical state, it faces the limit column 2 1 is in close contact with the limit rod 13, an opening 74 is provided on the outer edge of the lower part of the turning ruler 72, a counterweight block 73 is fixedly provided on the upper end of the turning ruler 72 facing away from the limit column 21, a U-shaped clip 75 is in close contact with one side of the limit column 21 above the limit rod 13, the U-shaped clip 75 is arranged on the same side as the opening 74, and the two side sections of the U-shaped clip 75 are tightened, the U-shaped clip 75 is made of elastic material, an anti-slip layer is provided on the inner side of the U-shaped clip 75, an extension rod 76 is fixedly provided horizontally on the middle part of the U-shaped clip 75, and a gear rod 77 is fixedly provided horizontally and vertically at one end of the extension rod 76, and when the turning ruler 72 is in a vertical state, it is in close contact with the gear rod 77 between the gear rod 77 and the U-shaped clip 75.

[0039] The reciprocating winch mechanism 8 includes a motor 81, a support plate 82 and a rotating shaft 85. The motor 81 is fixed on the upper side of the mounting plate 12, and the motor 81 is arranged to reciprocate. The support plates 82 are fixed on the upper side of the mounting plate 12 at intervals. A reel 83 is rotatably arranged between the support plates 82. The output end of the motor 81 passes through the adjacent support plates 82 and is coaxially fixedly connected with the reel 83. A suspension rope 84 is wound around the reel 83. The rotating shaft 85 is fixed between the two limit rods 13. A guide wheel 83 is coaxially rotatably arranged in the middle of the rotating shaft 85. 6. One end of the lifting rope 84 passes over the guide wheel 86 at the top and then vertically downwards and is fixedly connected to the lifting ring 37. The opposite surfaces of the first magnetic block 34 and the second magnetic block 53 on the same side are set to have different magnetic poles. The limit column 21 always slides in the limit rod 13 during the sampling process of the penetrator 64. The highest fixed hoisting position of the lifting rope 84 to the hollow column 31 is higher than the active unhooking mechanism 5 at the initial position. The lowest fixed falling position of the lower end of the lifting rope 84 is always lower than the upper end position of the drop hammer 41 in contact with the hammer pad 63.

[0040] When in use, the horizontal base frame 1 is fixed on the mobile device and moved to the test sampling position. The previous drilling device has drilled to the point to be tested. The penetrator 64 is connected to the drill rod 61 and the connecting plate 62 and extended to the depth position of the test point. The drill rod 61 can be spliced ​​and lengthened so that the connecting plate 62 is located above the ground. The limit column 21 assembled with the hammer mechanism 4 and the passive clamping and releasing mechanism 3 is inserted from bottom to top into the limit rod 13, and continues to be lifted to above the connecting plate 62, and the accompanying drop ring 22 is placed on the connecting plate 62. The limit column 21 is stabilized by the support of the connecting plate 62. At this time, the hammer mechanism 4 and the passive clamping and releasing mechanism 3 both slide to the lowest position, and the drop hammer 41 and the hammer pad 6 3, the hollow column 31 naturally falls and is pressed sideways by the conical block 44 so that the slider 35 overcomes the pressure of the compression spring 36 and moves outward, so that the slider 35 passes downward through the conical block 44, and finally the hollow column 31 contacts the drop weight 41. At this time, the lower end of the lifting rope 84 is passed through the guide wheel 86 and tied to the lifting ring 37, the turning ruler 72 is erected, the U-shaped clip 75 is pressed hard on the limit column 21 and completely stuck on the limit column 21 through deformation, and the gear rod 77 blocks the turning ruler 72 to prevent it from rotating horizontally, and the U-shaped clip 75 is slid up and down with force so that the gear rod 77 is in close contact with the upper counterweight 73. After letting go, the U-shaped clip 75 is firmly fixed due to the anti-slip layer on the U-shaped clip 75, and the preparation work is completed.

[0041] At this time, the motor 81 is turned on to make the reciprocating winch mechanism 8 start to winch. When the motor 81 rotates forward, the drum 83 rolls up the rope 84 and lifts the hollow column 31 upward. Since the slider 35 is located below the conical block 44 at this time, and the shortest distance between the inclined surfaces of the two sliders 35 is smaller than the diameter of the lower end surface of the conical block 44, the slider 35 lifts the conical block 44 and the drop hammer 41 upward, and continues to lift until the first magnetic block 34 is close to the second magnetic block 53, the second magnetic block 53 sucks the first magnetic block 34 outward so that The sliding column 33 overcomes the pressure of the compression spring 36 and moves outward, so that the sliding block 35 no longer supports the conical block 44, and the drop hammer 41 starts to fall freely. By reasonably setting the fixed position of the first fixing rod 51 on the limiting column 21, the drop hammer 41 is lifted 76 cm and the active unhooking mechanism 5 is triggered to realize the free fall of the drop hammer 41. Since the accompanying drop ring 22 is separated from the hammer pad 63 and is located above the hammer pad 63, the drop hammer 41 only hits the hammer pad 63 and transmits the force downward, avoiding the drop hammer 41 and the accompanying drop ring 22 and the limiting column 21. 21 hammers together to share the hammering kinetic energy. After the penetrator 64 moves down, the drop ring 22 moves down with the connection plate 62 under the action of gravity, so that the active unhooking mechanism 5 moves down with it. Then the motor 81 reverses, and the passive clamping release mechanism 3 starts to move down. Since the reverse and forward strokes of the motor 81 are large and there is a surplus, the hanging rope 84 drives the hollow column 31 to move down through the conical block 44 and contact the drop hammer 41 and leave a stock, so that after the subsequent hammer pad 63 descends, the hollow column 31 can still contact the drop hammer 41 to achieve sliding. Block 35 engages with the conical clamping block 44, and then the hollow column 31 and the drop hammer 41 are lifted. As the absolute height of the active unhooking mechanism 5 decreases, the fixed hoisting height of the lifting rope 84 can still trigger the active unhooking mechanism 5. Since the relative positions of the first fixed rod 51, the follower ring 22 and the hammer pad 63 are fixed, the drop hammer 41 in contact with the hammer pad 63 is free-falling after being lifted 76 cm each time by the active unhooking mechanism 5, ensuring that the drop distance and kinetic energy of the drop hammer 41 hitting the hammer pad 63 are constant each time.

[0042] During the hammering process, the position of the limit rod 13 and the rotating ruler 72 is fixed. Initially, the gear rod 77 is close to the counterweight 73. The limit column 21 moves downward to drive the U-shaped card 75 and the gear rod 77 to move downward. By setting the distance between the opening 74 and the counterweight 73, the gear rod 77 follows the U-shaped card 75, the limit column 21 and the penetrator 64 to descend by 15 cm. Then, the gear rod 77 moves to the opening 74 to make the rotating ruler 72 lose support. Under the action of the counterweight 73, the rotating ruler 72 tilts and rotates, releasing a significant signal to remind the operator that 15 cm has been penetrated. After resetting the positional relationship between the U-shaped card 75 and the rotating ruler 72, continue hammering and start recording the number of hammering. Repeat the above steps and record the number of hammerings corresponding to two penetrations of 15 cm according to the signal feedback, thereby completing the test, and taking out the sample with the penetrator 64 to achieve sampling for subsequent testing.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention.

[0045] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A sampling device for a coal mine grouting filling area, comprising a horizontal base frame (1), characterized in that: Support rods (11) are vertically fixed and symmetrically arranged on the upper sides of the two edges of the horizontal base frame (1), a mounting plate (12) is horizontally fixed on the upper end of the support rod (11), a limit rod (13) is horizontally fixed and symmetrically arranged at the middle of the front end of the mounting plate (12), a vertical limit follow-down mechanism (2) is vertically slidably arranged at the front end of the limit rod (13), a passive clamping release mechanism (3) and a hammer mechanism (4) are vertically slidably arranged from top to bottom on the vertical limit follow-down mechanism (2), an active unhooking mechanism (5) is fixedly arranged on the upper part of the vertical limit follow-down mechanism (2), a penetration sampling mechanism (6) is arranged directly below the vertical limit follow-down mechanism (2), a drop distance feedback mechanism (7) is arranged on one of the limit rods (13), and a reciprocating winch mechanism (8) is arranged on the mounting plate (12); The vertical limiting follow-drop mechanism (2) comprises limiting columns (21), the limiting columns (21) are arranged in pairs, the upper ends of the limiting columns (21) respectively slide vertically through the front ends of the two limiting rods (13), and a follow-drop ring (22) is horizontally fixed between the lower ends of the limiting columns (21); The passive clamping release mechanism (3) comprises a hollow column (31), the hollow column (31) being coaxially arranged above the follow-drop ring (22), the upper end of the hollow column (31) being closed, the lower part of the side wall of the hollow column (31) being thickened, the inner side of the thickened section of the side wall of the hollow column (31) being symmetrically provided with a rectangular groove (32), the rectangular groove (32) pointing to the axis of the hollow column (31), a sliding column (33) being arranged in parallel in the rectangular groove (32), the sliding column (33) being spaced apart from the rectangular groove (32), a sliding block (35) being fixedly arranged at one end of the sliding column (33) facing the axis of the hollow column (31), the sliding block (35) being slidingly arranged in close contact with the rectangular groove (32), and the other end of the sliding column (33) passing through the hollow column (31) and being fixedly provided with a first magnetic block ( 34), a compression spring (36) is provided inside the rectangular groove (32) on the outside of the sliding column (33), and the two ends of the compression spring (36) are respectively fixedly connected to the slider (35) and the hollow column (31), and the slider (35) is arranged with an inclined surface at one end facing away from the compression spring (36), and the inclined surface of the slider (35) faces the axis of the hollow column (31) and is arranged downward, and a second guide rod (38) is symmetrically fixedly provided on the outside of the hollow column (31) in a direction perpendicular to the connection line of the two sliding columns (33), and a slip ring (39) is fixedly provided at one end of the second guide rod (38), and the slip ring (39) is slidably sleeved on the outside of the limit column (21), and the two slip rings (39) are respectively provided with notches (391) perpendicular to the direction of the second guide rod (38) and facing away from each other, and a lifting ring (37) is fixedly provided at the center of the upper end of the hollow column (31); The active unhooking mechanism (5) comprises a first fixing rod (51), the first fixing rod (51) being respectively fixed vertically on one side of the limiting column (21), the two first fixing rods (51) being arranged in parallel with each other, the first fixing rod (51) being located below the limiting rod (13), the first fixing rod (51) being able to pass through the notch (391) on the same side, the second fixing rod (52) being respectively fixed horizontally and vertically on one end of the two first fixing rods (51), the two second fixing rods (52) being arranged facing each other, the second fixing rod (52) being vertically fixedly provided on one end of the second fixing rod (52), the second magnetic block (53) being located in the same vertical plane as the first magnetic block (34) on the same side, and the second magnetic block (53) being located outside the first magnetic block (34).

2. A sampling device for coal mine grouting filling area according to claim 1, characterized in that: The hammer mechanism (4) comprises a drop hammer (41), the drop hammer (41) being coaxially arranged between the drop ring (22) and the hollow column (31), the diameter of the drop hammer (41) being smaller than the inner diameter of the drop ring (22), first guide rods (42) being symmetrically fixedly arranged on both sides of the upper part of the drop hammer (41), one end of the first guide rods (42) being respectively slidably sleeved on the outer side of the limit column (21), a connecting column (43) being coaxially fixedly arranged on the upper end of the drop hammer (41), a conical clamping block (44) being coaxially fixedly arranged on the upper end of the connecting column (43), the conical clamping block (44) being arranged in the shape of an upright cone, and the shortest distance between the inclined surfaces of the two sliders (35) in the initial state of the compression spring (36) being smaller than the diameter of the lower end surface of the conical clamping block (44).

3. A sampling device for coal mine grouting filling area according to claim 2, characterized in that: The penetration sampling mechanism (6) comprises a hammer pad (63), the hammer pad (63) being coaxially arranged below the follow-down ring (22), the diameter of the hammer pad (63) being smaller than the inner diameter of the follow-down ring (22), a connecting plate (62) being coaxially fixedly arranged below the hammer pad (63), the diameter of the connecting plate (62) being larger than the inner diameter of the follow-down ring (22), a drill rod (61) capable of being spliced ​​and lengthened being coaxially fixedly arranged below the connecting plate (62), and a penetrator (64) being coaxially fixedly arranged below the drill rod (61).

4. A sampling device for coal mine grouting filling area according to claim 3, characterized in that: The drop distance feedback mechanism (7) comprises a support (71), a rotating ruler (72) and a U-shaped clip (75); the support (71) is symmetrically fixed at one end of one of the limit rods (13); the lower end of the rotating ruler (72) is rotatably arranged between the supports (71); when the rotating ruler (72) is in a vertical state, the side facing the limit column (21) is in close contact with the limit rod (13); an opening (74) is provided at the lower outer edge of the rotating ruler (72); a counterweight (73) is fixedly arranged at the upper end of the rotating ruler (72) facing away from the limit column (21); and the U-shaped clip (75) is arranged at the limit column (21). The upper part of the positioning rod (13) is tightly engaged with one side of the limiting column (21), the U-shaped clip (75) is arranged on the same side as the opening (74), the two side sections of the U-shaped clip (75) are tightened, the U-shaped clip (75) is made of elastic material, the inner side of the U-shaped clip (75) is provided with an anti-slip layer, an extension rod (76) is fixedly provided horizontally in the middle part of the U-shaped clip (75), and a stop rod (77) is fixedly provided horizontally and vertically at one end of the extension rod (76), and the turning ruler (72) is tightly attached to the stop rod (77) between the stop rod (77) and the U-shaped clip (75) when in a vertical state.

5. A sampling device for coal mine grouting filling area according to claim 4, characterized in that: The reciprocating winch mechanism (8) comprises a motor (81), a support plate (82) and a rotating shaft (85); the motor (81) is fixedly arranged on the upper side of the mounting plate (12); the motor (81) is arranged to reciprocate and rotate; the support plates (82) are fixedly arranged on the upper side of the mounting plate (12) at intervals; a reel (83) is rotatably arranged between the support plates (82); an output end of the motor (81) passes through adjacent support plates (82) and is coaxially fixedly connected to the reel (83); a suspension rope (84) is wound around the reel (83); the rotating shaft (85) is fixedly arranged between two limit rods (13); a guide wheel (86) is coaxially rotatably arranged in the middle of the rotating shaft (85); one end of the suspension rope (84) passes closely around the guide wheel (86) at the top and is vertically downwardly fixedly connected to the suspension ring (37).

6. A sampling device for coal mine grouting filling area according to claim 5, characterized in that: The facing surfaces of the first magnetic block (34) and the second magnetic block (53) on the same side are arranged with different magnetic poles.

7. A sampling device for coal mine grouting filling area according to claim 6, characterized in that: The limit column (21) always slides in the limit rod (13) during the sampling process of the penetrator (64), the highest fixed hoisting position of the hanging rope (84) on the hollow column (31) is higher than the active unhooking mechanism (5) at the initial position, and the lowest fixed falling position of the lower end of the hanging rope (84) is always lower than the upper end position of the drop hammer (41) in contact with the hammer pad (63).

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