CN213205765U - Device convenient to measure coal mine tunnel surface displacement volume - Google Patents

Abstract

The utility model relates to the technical field of coal mine measuring devices, in particular to a device convenient for measuring the displacement of the surface of a coal mine tunnel, wherein two side surfaces of a first connecting block and a second connecting block which are rotationally connected between the surfaces are respectively connected with a telescopic loop bar, the telescopic loop bar comprises an outer loop bar and a first inner loop bar, a second inner loop bar and a third inner loop bar, the inner cavity of the first inner loop bar is sequentially sleeved from the outside to the inside, the first inner loop bar is sleeved with a first inner loop bar, the outer end threads of the two inner loop bars are sleeved with positioning screws, the upper surface of the first connecting block is rotatably connected with the internal threads of the rotating sleeve and sleeved with a limiting body, the limiting body comprises a square block positioned at the bottom end, the square block is in sliding clamping connection with a first square groove on the lower surface of the first connecting block and a second square groove on the upper surface of the second connecting block along the vertical direction, the cross section of the outer loop bar is semicircular, the outer end of a positioning column, which is arranged on the plane of the outer loop bar and is close to the outer end and sleeved with the internal threads of the circular groove, is sleeved with a cylindrical shell, and the outer walls; the problem of surveying personnel be difficult to carry out accuracy, high-efficient measurement to tunnel surface displacement alone is solved.

Description

Device convenient to measure coal mine tunnel surface displacement volume

Technical Field

The utility model relates to a colliery measuring device technical field specifically is a device convenient to measure colliery tunnel surface displacement volume.

Background

In the coal mining process of a coal mine, along with the stoping of a coal face, stoping roadway surrounding rocks deform and displace under the influence of the advance supporting pressure of the face, wherein the surface displacement of a roadway is the most visual deformation of the roadway surrounding rocks under the influence of the mining of the face, and comprehensively reflects images of the roadway surrounding rocks after coupling of stress, strain, temperature, various production factors and the like. Therefore, the surface displacement of the roadway becomes the most basic observation content of the mine pressure of the roadway, and is paid more and more attention by mining technicians. At present, the cross method is one of the most convenient and commonly used methods for observing roadway surface displacement.

The method is characterized in that the surface displacement of the roadway is observed by adopting a cross method, and mainly the distance between two sides of the roadway and the distance between a top plate and a bottom plate are regularly measured so as to calculate the moving-in amount of the two sides and the moving-in amount of the top plate and the bottom plate of the roadway in a fixed period. Before measurement, calibration measuring points are required to be arranged in a roadway, measuring points of moving-close amount of two sides are generally arranged at the position of a waist line of the two sides of the roadway, measuring points of moving-close amount of a top bottom are generally arranged at a top plate and a bottom plate of the center line of the roadway, and the measuring points of the two sides and the measuring points of the top bottom plate are generally arranged on the same cross section of the roadway. When measuring the distance between two sides, one person fixes the end of the steel tape on a measuring point of one side of the roadway, and the other person pulls the steel tape to achieve the effect of measuring the distance between two sides; when the distance between the top plate and the bottom plate is measured, one person holds the upper part of the steel tape, the end of the steel tape is jacked at the measuring point of the top plate, and the other person slowly pulls the steel tape downwards so as to achieve the effect of measuring the distance between the top plate and the bottom plate. However, the measurement step is troublesome and it is difficult for one person to perform an accurate measurement operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device convenient to measure colliery tunnel surface displacement volume has solved among the prior art problem that survey crew is difficult to carry out accuracy, high-efficient measurement to tunnel surface displacement volume alone.

In order to achieve the above object, the utility model provides a following technical scheme: a device convenient for measuring the surface displacement of a coal mine tunnel comprises a telescopic loop bar, a first connecting block and a second connecting block, wherein two side surfaces of the first connecting block and the second connecting block are respectively and fixedly connected with the telescopic loop bar, the telescopic loop bar comprises an outer loop bar and a first inner loop bar which is sleeved in the outer loop bar in a sliding manner, a second inner loop bar is sleeved in a sliding manner in an inner cavity of the first inner loop bar, a third inner loop bar is sleeved in an inner cavity of the second inner loop bar in a sliding manner, the outer end threads of the first inner loop bar and the outer end threads of the second inner loop bar are sleeved with a positioning screw rod, the lower surface of the first connecting block is rotatably connected with the upper surface of the second connecting block, a rotating sleeve is rotatably connected to the middle position of the upper surface of the first connecting block, a limiting body is sleeved in the rotating sleeve in a threaded manner, a first square groove is formed in the middle position of the lower surface of the first connecting block, a second square groove is formed in the middle position, the limiting body comprises a square block positioned at the bottom end, the square block is in sliding clamping connection with the first square groove and the second square groove along the vertical direction, the section of the outer sleeve rod is semicircular, the bottom plane of the first connecting block, which is connected with the outer sleeve rod at two sides, is flush with the lower surface of the first connecting block, the top plane of the two sides of the second connecting block, which are connected with the outer loop bar, is flush with the upper surface of the second connecting block, the middle positions of the plane of the outer sleeve rod, which are close to the outer ends, are respectively provided with a circular groove, the internal thread of the circular groove is sleeved with a positioning column, the outer end of the positioning column is sleeved with a cylindrical shell in a sliding way along the vertical direction, the height of the cylindrical shell is less than the depth of the circular groove, the outer end face of the third inner loop bar is fixedly connected with an end plate, and the outer walls of the first inner loop bar, the second inner loop bar and the third inner loop bar are respectively provided with scales.

Preferably, the reference column includes second cylinder and second threaded rod, the second cylinder with the butt joint of second threaded rod, second threaded rod screw cup joint in the screw through hole that the terminal surface set up in the circular slot, the spout that both ends were sealed is seted up along vertical direction to the lateral wall of second cylinder, the cylinder casing cup joint in the periphery of second cylinder, just cylinder shells inner wall top be provided with the lug of spout slip joint.

Preferably, a spring is sleeved on the periphery of the positioning column between the inner end face of the circular groove and the cylindrical shell.

Preferably, the position that is close to the center of first connecting block lower surface puts fixedly connected with adapter sleeve, the position that is close to the center of second connecting block upper surface put seted up with the adapter sleeve rotates the ring channel that cup joints, the outer fringe of adapter sleeve bottom is provided with annular flange, the outer wall of ring channel bottom seted up with annular flange rotates the notch of joint.

Preferably, the spacing body still includes first cylinder and first threaded rod, first cylinder with first threaded rod butt joint, the position placed in the middle of square upper surface with the perpendicular fixed connection in bottom of first cylinder, correspond in the first connecting block the position placed in the middle of first square inslot cavity top surface has seted up the perforation, the top of first threaded rod with rotatory cover threaded sleeve connects.

Preferably, the thickness of the square block is equal to the depth of the second square groove, and the depth of the first square groove is equal to half of the depth of the second square groove.

Preferably, the outer side surface of the end plate is provided with a resistance increasing layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to a relative rotation 90 between measuring device's first connecting block and the second connecting block, then corresponding pull out inner loop pole and location to in the realization operating personnel is alone to tunnel top bottom distance and two group's simultaneous measurements of distance, the operation is not only simple, has improved measuring efficiency moreover.

2. The utility model relates to a similar cylinder body of rod of appearance when measuring device retrieves, small and exquisite moreover, portable uses.

3. The utility model relates to a measuring device sets up the end plate at the terminal surface of third inner loop pole to realize that the flexible body of rod can firmly support between two groups in the tunnel and between the tunnel top, avoided sliding during the measurement, improve measurement accuracy.

Drawings

Fig. 1 is a schematic overall front view structure diagram of the present invention;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1;

fig. 3 is a schematic perspective view of the first connecting block of the present invention;

fig. 4 is a schematic perspective view of a second connecting block according to the present invention;

FIG. 5 is a schematic perspective view of the telescopic rod of the present invention;

FIG. 6 is a schematic perspective view of the stopper of the present invention;

fig. 7 is a schematic perspective view of the positioning column of the present invention;

fig. 8 is a schematic perspective view of the cylindrical shell of the present invention.

In the figure: 10-a first connection block; 101-a first square groove; 102-piercing; 11-a rotating sleeve; 12-a connecting sleeve; 121-an annular flange; 20-a second connecting block; 201-a second square groove; 202-an annular groove; 30-an outer loop bar; 301-circular groove; 31-a first inner loop bar; 32-a second inner loop bar; 33-a third inner loop bar; 34-a positioning screw; 35-an end plate; 36-a resistance increasing layer; 40-a limiting body; 401-square; 402-a first cylinder; 403-a first threaded rod; 50-a positioning column; 501-a second cylinder; 502-a second threaded rod; 503-a chute; 60-a cylindrical shell; 601-a bump; 70-spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution, a device for conveniently measuring the surface displacement of a coal mine roadway, comprising a telescopic loop bar, a first connecting block 10 and a second connecting block 20, wherein two side surfaces of the first connecting block 10 and the second connecting block 20 are respectively and fixedly connected with the telescopic loop bar, the telescopic loop bar comprises an outer loop bar 30 and a first inner loop bar 31 slidably sleeved in the outer loop bar 30, a second inner loop bar 32 is slidably sleeved in an inner cavity of the first inner loop bar 31, a third inner loop bar 33 is slidably sleeved in an inner cavity of the second inner loop bar 32, outer end threads of the first inner loop bar 31 and the second inner loop bar 32 are sleeved with a positioning screw 34, a lower surface of the first connecting block 10 is rotatably connected with an upper surface of the second connecting block 20, a centered position of an upper surface of the first connecting block 10 is rotatably connected with a rotary sleeve 11, a position of the rotary sleeve 11 is rotatably sleeved with a limiting body 40, a centered position of a lower surface of the first connecting block 10 is provided with a first square groove 101, the middle position of the upper surface of the second connecting block 20 is provided with a second square groove 201, the limiting body 40 comprises a square block 401 positioned at the bottom end, the square block 401 is in sliding clamping connection with the first square groove 101 and the second square groove 201 along the vertical direction, the cross section of the outer sleeve rod 30 is semicircular, the bottom planes of the two sides of the first connecting block 10, which are connected with the outer sleeve rod 30, are flush with the lower surface of the first connecting block 10, the top planes of the two sides of the second connecting block 20, which are connected with the outer sleeve rod 30, are flush with the upper surface of the second connecting block 20, the middle positions of the planes of the outer sleeve rods 30, which are close to the outer ends, are respectively provided with a circular groove 301, a positioning column 50 is sleeved in the circular groove 301 in a threaded manner, the outer end of the positioning column 50 is sleeved in a sliding manner along the vertical direction with a cylindrical shell 60, the, the outer walls of the second inner loop bar 32 and the third inner loop bar 33 are respectively provided with scales.

The scale starting position of the first inner loop bar 31 is aligned with the outer end face of the outer loop bar 30, the scale starting position of the second inner loop bar 32 is aligned with the outer end face of the first inner loop bar 31, the scale starting position of the third inner loop bar 33 is aligned with the outer end face of the second inner loop bar 32, and the sum of the lengths of the outer end extending parts of the outer loop bar 30, the first connecting block 10, the second connecting block 20, the first inner loop bar 31, the second inner loop bar 32 and the third inner loop bar 33 is a fixed length; during measurement, scales extending outwards from the first inner loop bar 31, the second inner loop bar 32 and the third inner loop bar 33 corresponding to the same direction are added, and the sum of the scales and the fixed length is the distance measured in the direction; when the top-bottom distance and the two-side distance of the roadway are measured simultaneously, the rotating sleeve 11 is rotated to drive the limiting body 40 to move, so that the square block 401 is completely positioned in the second square groove 201 to meet the requirement that the first connecting block 10 and the second connecting block 20 can rotate relatively, after the first connecting block 10 and the second connecting block 20 rotate relatively for 90 degrees, the rotating sleeve 11 is rotated reversely to drive the limiting body 40 to move reversely, so that the upper part and the lower part of the square block 401 are respectively positioned in the first square groove 101 and the second square groove 201, and the first connecting block 10 and the second connecting block 20 are relatively fixed; adjusting the telescopic length of the lower telescopic loop bar to enable the rotation centers of the first connecting block 10 and the second connecting block 20 to be horizontally corresponding to the waist line, and then adjusting the telescopic length of the upper telescopic loop bar to enable the top end of the upper telescopic loop bar to be tightly propped against the roadway roof; then respectively adjusting the telescopic lengths of the telescopic loop bars at the two sides, so that the ends of the telescopic loop bars tightly prop the two sides, and the distance between the top and the bottom of the roadway and the distance between the two sides can be calculated through scales.

In this embodiment, the positioning column 50 includes a second cylinder 501 and a second threaded rod 502, the second cylinder 501 is butted with the second threaded rod 502, the second threaded rod 502 is screwed and sleeved in a threaded through hole formed in the inner end surface of the circular groove 301, a sliding groove 503 with two sealed ends is formed in the side wall of the second cylinder 501 along the vertical direction, the cylindrical shell 60 is sleeved and connected on the periphery of the second cylinder 501, and a convex block 601 slidably connected with the sliding groove 503 is arranged on the top end of the inner wall of the cylindrical shell 60.

In this embodiment, a spring 70 is sleeved on the periphery of the positioning column 50 between the inner end surface of the circular groove 301 and the cylindrical shell 60.

In this embodiment, a connecting sleeve 12 is fixedly connected to a position, close to the center, of the lower surface of the first connecting block 10, an annular groove 202 rotatably sleeved with the connecting sleeve 12 is formed in a position, close to the center, of the upper surface of the second connecting block 20, an annular flange 121 is arranged on the outer edge of the bottom end of the connecting sleeve 12, and a notch rotatably clamped with the annular flange 121 is formed in the outer wall of the bottom end of the annular groove 202.

In this embodiment, the limiting body 40 further includes a first cylinder 402 and a first threaded rod 403, the first cylinder 402 is abutted with the first threaded rod 403, the central position of the upper surface of the block 401 is vertically and fixedly connected with the bottom end of the first cylinder 402, a through hole 102 is formed in the first connecting block 10 corresponding to the central position of the top surface of the inner cavity of the first square groove 101, and the top end of the first threaded rod 403 is in threaded socket connection with the rotating sleeve 11.

In this embodiment, the thickness of the square 401 is equal to the depth of the second square groove 201, and the depth of the first square groove 101 is equal to half of the depth of the second square groove 201.

In this embodiment, the resistance increasing layer 36 is disposed on the outer side surface of the end plate 35.

The working principle is as follows: when the top-bottom distance and the two-side distance of the roadway are measured simultaneously, the rotating sleeve 11 is rotated, the rotating sleeve 11 drives the square block 401 to move through the first threaded rod 403 and the second cylinder 402, so that the square block 401 is completely positioned in the second square groove 201, and at the moment, the first connecting block 10 and the second connecting block 20 can rotate relatively; the first connecting block 10 and the second connecting block 20 are relatively rotated by 90 degrees through the rotating sleeved relation of the connecting sleeve 12 and the annular groove 202, and the annular flange 121 plays a limiting role to prevent the first connecting block 10 and the second connecting block 20 from being relatively separated; then, the rotating sleeve 11 is rotated reversely to drive the limiting body 40 to move reversely, so that the upper part and the lower part of the square block 401 are respectively positioned in the first square groove 101 and the second square groove 201, and the first connecting block 10 and the second connecting block 20 are relatively fixed; adjusting the telescopic length of the lower telescopic loop bar to enable the rotation centers of the first connecting block 10 and the second connecting block 20 to be horizontally corresponding to the waist line, and then adjusting the telescopic length of the upper telescopic loop bar to enable the top end of the upper telescopic loop bar to be tightly propped against the roadway roof; then respectively adjusting the telescopic lengths of the telescopic loop bars at the two sides to enable the ends of the telescopic loop bars to tightly prop the two sides, and calculating the distance between the top and the bottom of the roadway and the distance between the two sides through scales; wherein, when the telescopic length of the telescopic loop bar is adjusted, the third inner loop bar 33 is sleeved relative to the second inner loop bar 32 and is limited and fixed through the positioning screw 34, the second inner loop bar 32 is sleeved relative to the first inner loop bar 31 and is limited and fixed through the positioning screw 34, the first inner loop bar 31 is sleeved relative to the outer loop bar 30, due to the relative rotation of the first connecting block 10 and the second connecting block 20, the outer loop bars 30 which are arranged opposite to each other are moved away from each other, so that the spring 70 ejects the cylindrical shell 60 from the circular groove 301, the cylindrical shell 60 slides relative to the sliding groove 503 through the projection 601 when being ejected outwards, the second cylinder 501 and the second threaded rod 502 are rotated by rotating the cylindrical shell 60, and the second threaded rod 502 penetrates through a threaded through hole on the inner end surface of the circular groove 301 to tightly push the first inner loop bar 31, so that the effect of limiting and fixing the first inner loop bar 31 is achieved; the third inner loop bar 33 is correspondingly supported on the roadway top bottom plate and the two sides through the end plate 35, and the resistance increasing layer 36 is used for increasing the frictional resistance between the end plate 35 and the contact surface so as to realize the stable rooting and fixing of the measuring device and avoid the slippage phenomenon in the measuring process.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a device convenient to measure coal mine tunnel surface displacement volume, includes flexible loop bar, its characterized in that still includes: the connecting structure comprises a first connecting block (10) and a second connecting block (20), two side faces of the first connecting block (10) and the second connecting block (20) are respectively and fixedly connected with a telescopic loop bar, the telescopic loop bar comprises an outer loop bar (30) and a first inner loop bar (31) which is sleeved in the outer loop bar (30) in a sliding manner, a second inner loop bar (32) is sleeved in an inner cavity of the first inner loop bar (31) in a sliding manner, a third inner loop bar (33) is sleeved in an inner cavity of the second inner loop bar (32) in a sliding manner, outer end threads of the first inner loop bar (31) and the second inner loop bar (32) are sleeved with a positioning screw rod (34), a lower surface of the first connecting block (10) is rotationally connected with an upper surface of the second connecting block (20), a central position of the upper surface of the first connecting block (10) is rotationally connected with a rotating sleeve (11), and a limiting body (40) is sleeved in the rotating sleeve (11), the middle position of the lower surface of the first connecting block (10) is provided with a first square groove (101), the middle position of the upper surface of the second connecting block (20) is provided with a second square groove (201), the limiting body (40) comprises a square block (401) positioned at the bottom end, the square block (401) is in sliding clamping connection with the first square groove (101) and the second square groove (201) along the vertical direction, the cross section of the outer sleeve rod (30) is semicircular, the bottom plane of the outer sleeve rod (30) connected with the two sides of the first connecting block (10) is flush with the lower surface of the first connecting block (10), the top plane of the outer sleeve rod (30) connected with the two sides of the second connecting block (20) is flush with the upper surface of the second connecting block (20), the middle position of the plane of the outer sleeve rod (30) close to the outer end is respectively provided with a round groove (301), and a positioning column (50) is sleeved in the round groove (301), the outer end of the positioning column (50) is sleeved with a cylindrical shell (60) in a sliding mode along the vertical direction, the height of the cylindrical shell (60) is smaller than the depth of the circular groove (301), the outer end face of the third inner loop bar (33) is fixedly connected with an end plate (35), and scales are arranged on the outer walls of the first inner loop bar (31), the second inner loop bar (32) and the third inner loop bar (33) respectively.

2. The device for facilitating measurement of coal mine roadway surface displacement according to claim 1, wherein the positioning column (50) comprises: second cylinder (501) and second threaded rod (502), second cylinder (501) with second threaded rod (502) butt joint, second threaded rod (502) screw cup joint in the screw thread through-hole that circular slot (301) internal end face set up, spout (503) that both ends were sealed are seted up along vertical direction to the lateral wall of second cylinder (501), cylinder casing (60) cup joint in the periphery of second cylinder (501), just cylinder casing (60) inner wall top be provided with lug (601) of spout (503) slip joint.

3. The device of claim 2 for facilitating measurement of the amount of coal mine roadway surface displacement, wherein: and a spring (70) is sleeved on the periphery of the positioning column (50) between the inner end surface of the circular groove (301) and the cylindrical shell (60).

4. The device of claim 1 for facilitating measurement of the amount of coal mine roadway surface displacement, wherein: the utility model discloses a joint, including first connecting block (10), second connecting block (20), outer fringe of connecting block (12) bottom is provided with annular flange (121), the outer wall of annular flange (202) bottom seted up with annular flange (121) rotate the notch of joint, be close to central point of first connecting block (10) lower surface and put fixedly connected with adapter sleeve (12), be close to central point of second connecting block (20) upper surface put seted up with adapter sleeve (12) rotate ring channel (202) that cup joints.

5. The device for facilitating measurement of the surface displacement of the coal mine roadway according to claim 4, wherein the limiting body (40) further comprises: the connecting structure comprises a first cylinder (402) and a first threaded rod (403), wherein the first cylinder (402) is in butt joint with the first threaded rod (403), the middle position of the upper surface of the square block (401) is vertically and fixedly connected with the bottom end of the first cylinder (402), a through hole (102) is formed in the first connecting block (10) corresponding to the middle position of the top surface of the inner cavity of the first square groove (101), and the top end of the first threaded rod (403) is in threaded sleeve joint with the rotating sleeve (11).

6. The device of claim 1 for facilitating measurement of the amount of coal mine roadway surface displacement, wherein: the thickness of the square block (401) is equal to the depth of the second square groove (201), and the depth of the first square groove (101) is equal to half of the depth of the second square groove (201).

7. The device of claim 1 for facilitating measurement of the amount of coal mine roadway surface displacement, wherein: and a resistance increasing layer (36) is arranged on the outer side surface of the end plate (35).

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