Underground coal mine roadway surrounding rock observation device

Abstract

The utility model provides a coal mine underground roadway surrounding rock observation device which comprises a supporting leg assembly and a connecting block, and the supporting leg assembly is connected with the connecting block in a clamped mode so that the supporting leg assembly can be conveniently connected. The supporting leg assembly comprises a sleeve, an adjusting pipe, a spring and a measuring pipe. The sleeve sleeves the outer side of the adjusting pipe, a plurality of positioning holes are formed in the side surface of the sleeve, and the adjusting pipe is limited through the positioning holes after being connected with the sleeve in a sliding manner; the spring and the measuring tube are arranged in the adjusting tube, one end of the spring is connected with one end of the adjusting tube, and the other end of the spring is connected with one end of the measuring tube; when the spring is in a free state, the end, away from the spring, of the measuring tube extends out of the adjusting tube. By arranging the spring and the measuring pipe in the adjusting pipe, the distance from the end face of the adjusting pipe to the top, bottom and side face of the roadway can be conveniently measured. By arranging the adjusting pipe in the sleeve, sleeve assemblies with different lengths can be provided, the size of a roadway can be measured without shutdown, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of mine roadway surveying, and in particular to a coal mine underground roadway surrounding rock observation device. BACKGROUND

[0002] In a roadway project, surrounding rock deformation observation is an important link for ensuring the stability and safety of the roadway. As a commonly used surrounding rock deformation observation method, the "cross" point distribution method achieves the monitoring of the deformation of the roadway surrounding rock by setting multiple monitoring sections in the roadway and marking "cross" measuring points on each section.

[0003] However, the "cross" point distribution method has some problems in practical application. On the one hand, the method needs to pull a line on each monitoring section and measure using a steel tape, which not only has a large workload and the measurement accuracy is easily affected by human factors, but also consumes a large amount of time and human resources because at least 2-3 people are needed to cooperate to complete the measurement process. On the other hand, when setting an observation station in a complex environment such as a coal mine underground roadway, the measurement personnel are easily hindered by equipment such as a transfer machine and a belt conveyor, and sometimes even need to measure from the inside of the equipment, which not only increases the difficulty of measurement, but also has serious safety hazards. CONTENT OF THE INVENTION

[0004] The application provides a coal mine underground roadway surrounding rock observation device to solve the problem of difficult roadway surrounding rock observation.

[0005] The application provides a coal mine underground roadway surrounding rock observation device, which comprises a supporting leg assembly and a connecting block, wherein the supporting leg assembly is connected with the connecting block through clamping; the supporting leg assembly comprises a sleeve pipe, an adjusting pipe, a spring and a measuring pipe; the sleeve pipe is sleeved on the outside of the adjusting pipe; the side surface of the sleeve pipe is provided with a plurality of positioning holes, and the adjusting pipe is limited through the positioning holes after being connected with the sleeve pipe in a sliding mode; the spring and the measuring pipe are arranged in the interior of the adjusting pipe; one end of the spring is connected with one end of the adjusting pipe, and the other end of the spring is connected with one end of the measuring pipe; the measuring pipe is provided with a scale; and when the spring is in a free state, one end of the measuring pipe away from the spring extends out of the adjusting pipe.

[0006] The device can conveniently measure the distance from the end surface of the adjusting pipe to the top and bottom and side surface of the roadway by arranging the spring and the measuring pipe in the adjusting pipe. The sleeve pipe assembly with different lengths can be provided by arranging the adjusting pipe in the sleeve pipe, the device can be placed at any position in the roadway to measure the roadway, the equipment such as a conveyor can be avoided, and the operation is convenient, so as to solve the problem of difficult roadway surrounding rock observation.

[0007] The device can conveniently measure the distance from the end surface of the adjusting pipe to the top and bottom and side surface of the roadway by arranging the spring and the measuring pipe in the adjusting pipe. The sleeve pipe assembly with different lengths can be provided by arranging the adjusting pipe in the sleeve pipe, the device can be placed at any position in the roadway to measure the roadway, the equipment such as a conveyor can be avoided, and the operation is convenient, so as to solve the problem of difficult roadway surrounding rock observation.

[0008] In some possible implementation manners, the number of the leg assemblies is four, and the four leg assemblies are respectively connected with the top surface of the connecting block, the bottom surface of the connecting block, and two mutually parallel side surfaces of the connecting block.

[0009] In some possible implementation manners, the top surface of the connecting block, the bottom surface of the connecting block, and the two mutually parallel side surfaces of the connecting block are respectively provided with clamping blocks, the sleeve is provided with clamping grooves at the end away from the measuring tube, and the leg assemblies are connected with the connecting block through the clamping grooves and the clamping blocks. Through the clamping connection, the leg assemblies can be conveniently assembled and disassembled.

[0010] In some possible implementation manners, the first cross section of the clamping block is T-shaped, the second cross section of the clamping block is trapezoidal, and the shorter bottom edge of the trapezoidal shape faces the top surface of the connecting block; the first cross section is the cross section of the clamping block, and the second cross section is the cross section parallel to the setting surface of the clamping block. By setting the first cross section of the clamping block as T-shaped, the sleeve can be limited in the horizontal direction to prevent the leg assemblies from being separated from the clamping blocks; by setting the second cross section of the clamping block as trapezoidal, the sleeve can be limited in the vertical direction to prevent the leg assemblies from falling off the clamping blocks.

[0011] In some possible implementation manners, the sleeve is provided with a baffle at the end away from the measuring tube, and the clamping grooves are arranged on the side surface of the baffle.

[0012] In some possible implementation manners, the distance between the positioning holes is equal, the distance from the connecting block to the two sides or the top and bottom of the roadway can be conveniently calculated, and the distance between two adjacent positioning holes is greater than 100 mm, so that the length of the leg assembly can be conveniently adjusted.

[0013] In some possible implementation manners, the marker plates are further arranged at the outer edges of the positioning holes, and the number of the marker plates is the same as that of the positioning holes; when the adjusting tube is limited by one of the positioning holes, the marker plate corresponding to the positioning hole limiting the adjusting tube is perpendicular to the length direction of the sleeve. By arranging the marker plates, the positioning hole used for measurement can be conveniently marked to prevent the measurement personnel from miscounting the measurement size.

[0014] In some possible implementation manners, the marker plate comprises a marker plate body and a fixing pin, and one end of the marker plate body is connected with the side surface of the sleeve through the fixing pin.

[0015] In some possible implementation manners, the magnetic attraction is further arranged at the end of the measuring tube away from the spring.

[0016] The application provides a coal mine underground roadway surrounding rock observation device, which comprises a supporting leg assembly and a connecting block, and the supporting leg assembly is clamped with the connecting block. The supporting leg assembly comprises a sleeve pipe, an adjusting pipe, a spring and a measuring pipe. The sleeve pipe is sleeved on the outer side of the adjusting pipe, the side surface of the sleeve pipe is provided with a plurality of positioning holes, and the adjusting pipe is limited by the positioning holes after being slidably connected with the sleeve pipe; the spring and the measuring pipe are arranged in the interior of the adjusting pipe, one end of the spring is connected with one end of the adjusting pipe, and the other end of the spring is connected with one end of the measuring pipe; a scale is arranged on the measuring pipe, and when the spring is in a free state, the end of the measuring pipe away from the spring extends out of the adjusting pipe. The device can conveniently measure the distance from the end surface of the adjusting pipe to the top, bottom and side surface of the roadway by arranging the spring and the measuring pipe in the adjusting pipe. The adjusting pipe is arranged in the sleeve pipe, different lengths of sleeve pipe assemblies can be provided, the size of the whole device can be flexibly changed, the device can be used in roadways with different sizes, the device can be placed at any position in the roadway to measure the roadway, the device can avoid the conveyor and other equipment, the measurement personnel need not enter the inside of the belt, the size of the roadway can be measured without stopping, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0018] Figure 1 The structural diagram of the coal mine underground roadway surrounding rock observation device provided by the embodiment of the application is shown.

[0019] Figure 2 The structural diagram of the coal mine underground roadway surrounding rock observation device provided by the embodiment of the application is shown.

[0020] Figure 3 The structural diagram of the supporting leg assembly provided by the embodiment of the application is shown.

[0021] Figure 4 The structural diagram of the connecting block provided by the embodiment of the application is shown.

[0022] ILLUSTRATION:

[0023] Among them, 1- supporting leg assembly; 11- sleeve pipe; 111- baffle; 112- positioning hole; 12- adjusting pipe; 13- spring; 14- measuring pipe; 141- magnetic attraction; 15- marking plate; 2- connecting block; 21- clamping block. DETAILED DESCRIPTION

[0024] The embodiments will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings. In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It is apparent, however, that the embodiments can be practiced without these specific details. In other instances, well-known structures and processes are not described in detail in order to avoid obscuring the description of the embodiments. The following description is not intended to represent one or more embodiments consistent with the present application in isolation, but rather the following description simply represents an example of a system and method consistent with some aspects of the present application as detailed in the claims below.

[0025] When the roadway surrounding rock is observed by using the "cross" point method, on the one hand, the method needs to pull a line on each monitoring section and measure by using a steel tape, which not only has a large workload, but also the measurement accuracy is easily affected by human factors, and since the measurement process needs to be completed by at least 2-3 people, a large amount of time and human resources are also consumed. On the other hand, when the observation station is set in the complex environment such as the coal mine roadway, the measurement personnel are easily hindered by the equipment such as the transfer machine and the belt conveyor, and sometimes even need to measure on the inner side of the equipment, which not only increases the difficulty of measurement, but also has safety hazards.

[0026] In order to solve the problem of difficult observation of the roadway surrounding rock, the embodiment of the present application provides a kind of coal mine roadway surrounding rock observation device, see Figure 1 , the device comprises: leg assembly 1 and connecting block 2, leg assembly 1 is clamped with connecting block 2, to facilitate the connection of leg assembly 1. Wherein, the leg assembly 1 includes sleeve 11, adjusting tube 12, spring 13 and measuring tube 14. The connecting block 2 can be a cubic structure, the sleeve 11, the adjusting tube 12 and the measuring tube 14 can be made of square tube, and the material is simple and easy to obtain.

[0027] The sleeve 11 is sleeved on the outside of the adjusting tube 12, and a plurality of positioning holes 112 are arranged on the side surface of the sleeve 11. Threaded holes can be arranged at the end of the adjusting tube 12, so that the adjusting tube 12 and the sleeve 11 can be connected by sliding and then limited by the positioning holes 112. By arranging a plurality of positioning holes 112, the adjusting tube 12 can be placed in different positions to provide leg assemblies 1 of different lengths. As shown in the direction of the left side of Figure 1 , the right side of Figure 1 , the left side of Figure 1 , the leg assembly 1 on the left side and the leg assembly 1 on the right side are positioned by different positioning holes 112, so that the leg assemblies 1 on both sides are offset. The top surface, the bottom surface and the two side surfaces of the roadway are respectively marked with observation points. When measuring, if the observation points of the top surface and the bottom surface are not in the central position of the roadway, the position of the adjusting tube 12 can be adjusted according to the position of the observation points of the top surface and the ground. At the same time, the conveyor belt can be avoided, so that the conveyor equipment can continuously run.

[0028] The spring 13 and the measuring tube 14 are arranged inside the adjusting tube 12, one end of the spring 13 is connected to one end of the adjusting tube 12, and the other end of the spring 13 is connected to one end of the measuring tube 14, and in some embodiments, the spring 13 can be connected to the adjusting tube 12 and the measuring tube 14 by welding respectively. The measuring tube 14 is provided with a scale, when the spring 13 is in a free state, the end of the measuring tube 14 away from the spring 13 extends out of the adjusting tube 12, when the spring 13 is in a compressed state, the distance from the end of the adjusting tube 12 to the two sides or the top and bottom of the roadway can be read through the scale on the measuring tube 14, and then the distance from the center of the device, i.e. the connecting block 2, to the two sides or the top and bottom of the roadway can be calculated.

[0029] The observation device provided by the application can conveniently measure the distance from the end face of the adjusting tube 12 to the top and bottom and the side of the roadway by arranging the spring 13 and the measuring tube 14 in the adjusting tube 12. By arranging the adjusting tube 12 in the sleeve pipe 11, sleeve pipe assemblies 1 of different lengths can be provided, so that the size of the entire device can be flexibly changed, not only can be used in roadways of different sizes, but also the device can be placed at any position in the roadway to measure the roadway, avoiding the conveyor and other equipment, without the need for measurement personnel to enter the inside of the belt, and the size of the roadway can be measured without stopping, which is convenient to operate.

[0030] In some embodiments, the number of leg assemblies 1 is four, and the four leg assemblies 1 are respectively clamped with the top surface of the connecting block 2, the bottom surface of the connecting block 2, and the two mutually parallel side surfaces of the connecting block 2. The four leg assemblies 1 form a cross-shaped structure and are respectively used to measure the size of the top surface, the bottom surface and the two side surfaces of the roadway. The end of the leg assembly 1 away from the connecting block 2 is aligned with the observation point, and the distance from the four surfaces of the roadway can be measured.

[0031] Referring to Figure 4 , the top surface of the connecting block 2, the bottom surface of the connecting block 2, and the two mutually parallel side surfaces of the connecting block 2 are respectively provided with clamping blocks 21, and the end of the sleeve pipe 11 away from the measuring tube 14 is provided with a clamping groove, and the leg assembly 1 is clamped with the connecting block 2 through the clamping groove and the clamping block 21. In some embodiments, clamping blocks 21 can also be arranged on the four side surfaces of the connecting block 2, and the leg assembly 1 can be clamped with the clamping block 21 on any one side surface during measurement. In order to reduce the weight of the device, the connecting block 2 can be made of aluminum, and the clamping block 21 can be integrally formed with the connecting block 2.

[0032] The first section of the clamping block 21 is T-shaped, and the second section of the clamping block 21 is trapezoidal, and the shorter base of the trapezoid faces the top surface of the connecting block 2. It should be noted that the first section is the cross section of the clamping block 21, and the second section is the section parallel to the setting surface of the clamping block 21. When the sleeve 11 in the support leg assembly 1 is clamped with the side surface of the connecting block 2, by setting the first section of the clamping block 21 as T-shaped, the sleeve 11 can be limited in the horizontal direction to prevent the support leg assembly 1 from being separated from the clamping block 21; by setting the second section of the clamping block 21 as trapezoidal, the sleeve 11 can be limited in the vertical direction to prevent the support leg assembly 1 from falling off the clamping block 21.

[0033] Referring to Figures 2-3 , the end of the sleeve 11 away from the measuring pipe 14 is provided with a baffle 111, and the baffle 111 can be connected with the end of the sleeve 11 by welding. The clamping groove is provided on the side surface of the baffle 111. It can be understood that the clamping groove is matched with the section of the clamping block 21, that is, the cross section of the clamping groove is also T-shaped, and the section parallel to the second section is also trapezoidal, so that the clamping groove can be clamped with the clamping block 21.

[0034] The distance between the positioning holes 112 is equal, which can facilitate the calculation of the distance from the connecting block 2 (i.e. the measuring center) to the two sides or the roof and floor of the roadway. The distance between the adjacent two positioning holes 112 is greater than 100 mm, and since the width between the two sides of the roadway and the height of the roof and floor is at least greater than 2 meters, the distance between the positioning holes 112 is greater than 100 mm, which can facilitate the adjustment of the length of the support leg assembly 1.

[0035] In some embodiments, the device further comprises a marker plate 15, and the marker plate 15 is arranged at the outer edge of the positioning hole 112. The number of the marker plate 15 is the same as the number of the positioning hole 112, that is, each positioning hole 112 corresponds to one marker plate 15. The marker plate 15 can be arranged on the same side as the positioning hole 112, or can be arranged on the adjacent side of the positioning hole 112. When the adjusting pipe 12 is limited by one of the positioning holes 112, the marker plate 15 corresponding to the positioning hole 112 limiting the adjusting pipe 12 is perpendicular to the length direction of the sleeve 11, which can facilitate the marking of the positioning hole 112 used in the measurement, so as to prevent the measurement personnel from miscounting the measurement size.

[0036] The marker plate 15 comprises a marker plate body and a fixing pin, and one end of the marker plate body is connected with the side surface of the sleeve 11 through the fixing pin. If it is necessary to mark the positioning hole 112, the marker plate body is rotated to be perpendicular to the length direction of the sleeve 11, and after the measurement is completed, the marker plate body is retracted by rotating the marker plate body.

[0037] Referring again to Figure 3In some embodiments, the device further comprises a magnetic attraction 141 arranged at the end of the measuring tube 14 away from the spring 13. The magnetic attraction 141 can be fixed to the end of the measuring tube 14 by bonding. The magnetic attraction 141 is attracted to the magnets arranged at the four observation points on the roof, floor and side of the roadway, so as to better fix the four leg assemblies 1.

[0038] During measurement, the leg assembly 1 is first clamped with the two sides of the connecting block 2, and the position of the adjusting tube 12 is adjusted according to the position of the observation point. The two measuring tubes 14 on the sides are abutted with the observation points on the side of the roadway. Then the leg assembly 1 is clamped with the top and bottom of the connecting block 2, and the position of the adjusting tube 12 is adjusted according to the position of the connecting block 2 at this time, so that the measuring tubes 14 on the top and bottom are abutted with the observation points on the top and bottom of the roadway. Then the distance from the end face of the adjusting tube 12 to the roadway can be read according to the scale on the measuring tube 14, and the distance from the connecting block 2 to the roadway at the center position can be calculated. When measuring the next side, if the roadway deforms, the deformation amount can be directly read from the scale of the measuring tube 14.

[0039] According to the above technical solution, the embodiment of the present application provides a coal mine underground roadway surrounding rock observation device, which comprises a leg assembly 1 and a connecting block 2. The leg assembly 1 is clamped with the connecting block 2 to facilitate the connection of the leg assembly 1. The leg assembly 1 comprises a sleeve 11, an adjusting tube 12, a spring 13 and a measuring tube 14. The sleeve 11 is sleeved on the outside of the adjusting tube 12, and the side of the sleeve 11 is provided with a plurality of positioning holes 112. The adjusting tube 12 is connected with the sleeve 11 through the positioning holes 112 after sliding connection. The spring 13 and the measuring tube 14 are arranged in the inside of the adjusting tube 12. One end of the spring 13 is connected with one end of the adjusting tube 12, and the other end of the spring 13 is connected with one end of the measuring tube 14. The measuring tube 14 is provided with a scale. When the spring 13 is in a free state, the end of the measuring tube 14 away from the spring 13 extends out of the adjusting tube 12. The device provided by the present application can conveniently measure the distance from the end face of the adjusting tube 12 to the top, bottom and side of the roadway by arranging the spring 13 and the measuring tube 14 in the adjusting tube 12. By arranging the adjusting tube 12 in the sleeve 11, a sleeve assembly 1 with different lengths can be provided, so that the size of the entire device can be flexibly changed. The device can be used not only in roadways with different sizes, but also at any position in the roadway for measurement, avoiding the conveyor and other equipment. The measurement personnel do not need to enter the inside of the belt, and the size of the roadway can be measured without stopping the machine, which is convenient to operate.

[0040] The similar parts among the embodiments provided in the application can be referred to each other, the specific embodiments provided above are only several examples under the general concept of the application, and do not constitute the limitation of the protection scope of the application. Any other embodiments extended according to the application scheme without creative labor for those skilled in the art shall fall within the protection scope of the application.

Claims

1. A coal mine underground roadway surrounding rock observation device, characterized in that, The utility model relates to a kind of adjustable support, including: Support leg assembly (1) and connecting block (2), the support leg assembly (1) is clamped with the connecting block (2);The support leg assembly (1) includes sleeve (11), adjusting tube (12), spring (13) and measuring tube (14); The sleeve (11) is sleeved on the outside of the adjusting tube (12), the side of the sleeve (11) is provided with a plurality of positioning holes (112), the adjusting tube (12) is limited by the positioning hole (112) after being slidably connected with the sleeve (11);The spring (13) and the measuring tube (14) are arranged inside the adjusting tube (12), one end of the spring (13) is connected with one end of the adjusting tube (12), the other end of the spring (13) is connected with one end of the measuring tube (14);Scale is provided on the measuring tube (14), when the spring (13) is free state, the measuring tube (14) is away from the end of the spring (13) and extends out of the adjusting tube (12).

2. The coal mine underground roadway surrounding rock observation device according to claim 1, characterized in that, The number of the support leg assembly (1) is four, and the four support leg assemblies (1) are clamped with the top surface of the connecting block (2), the bottom surface of the connecting block (2) and the two mutually parallel side surfaces of the connecting block (2) respectively.

3. The coal mine underground roadway surrounding rock observation device according to claim 2, characterized in that, The top surface of the connecting block (2), the bottom surface of the connecting block (2) and the two mutually parallel side surfaces of the connecting block (2) are respectively provided with clamping blocks (21), and the end of the sleeve (11) away from the measuring tube (14) is provided with a clamping groove, and the support leg assembly (1) is clamped with the connecting block (2) through the clamping groove and the clamping blocks (21).

4. The coal mine underground roadway surrounding rock observation device according to claim 3, characterized in that, The first cross section of the clamping block (21) is T-shaped, the second cross section of the clamping block (21) is trapezoidal, and the shorter base of the trapezoid faces the top surface of the connecting block (2);The first cross section is the cross section of the clamping block (21), and the second cross section is the cross section parallel to the setting surface of the clamping block (21).

5. The coal mine underground roadway surrounding rock observation device according to claim 3, characterized in that, The end of the sleeve (11) away from the measuring tube (14) is provided with a baffle (111), and the clamping groove is arranged on the side surface of the baffle (111).

6. The coal mine underground roadway surrounding rock observation device according to claim 1, characterized in that, The spacing of the positioning holes (112) is equal, and the spacing of the two adjacent positioning holes (112) is greater than 100 mm.

7. The coal mine underground roadway surrounding rock observation device according to claim 1, characterized in that, Further comprising a marker plate (15), the marker plate (15) is arranged at the outer edge of the positioning hole (112), and the number of the marker plate (15) is the same as that of the positioning hole (112);When the adjusting tube (12) is limited by one of the positioning holes (112), the marker plate (15) corresponding to the positioning hole (112) limiting the adjusting tube (12) is perpendicular to the length direction of the sleeve (11).

8. The coal mine underground roadway surrounding rock observation device according to claim 1, characterized in that, The marker plate (15) includes a marker plate body and a fixing pin, and one end of the marker plate body is connected with the side surface of the sleeve (11) through the fixing pin.

9. The coal mine underground roadway surrounding rock observation device according to claim 1, characterized in that, Further comprising a magnetic attraction (141), which is arranged at the end of the measuring tube (14) away from the spring (13).

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