Middle-length hole blasting and hole distributing device for strip mine and blasting method of middle-length hole blasting and hole distributing device

Abstract

The invention belongs to the technical field of strip mine medium-length hole blasting, and provides a strip mine medium-length hole blasting hole distribution device and a blasting method thereof. The device comprises a central assembly shaft; one end of the central rotating shaft extends into the strip mine deep hole, and the other end is in transmission connection with an external power source; the central group shaft comprises at least one rotating shaft which is connected one by one; the bottom expanding hole part is detachably mounted on the central group shaft, is positioned on the rotating shaft and is close to the bottom of the medium-length hole in the strip mine; the bottom hole expanding part comprises a mounting sliding sleeve, a hole expanding group cutter and a telescopic piece; the mounting sliding sleeve is slidably mounted on the central group shaft; the reaming group cutters are mounted on the mounting sliding sleeve and are uniformly distributed in the radial direction of the mounting sliding sleeve; one end of the chambering group cutter is hinged with the mounting sliding sleeve, and the other end of the chambering group cutter is propped against the hole wall of the blasting cloth hole; one end of the telescopic piece is mounted on the mounting sliding sleeve and hinged to the mounting sliding sleeve, and the other end of the telescopic piece is hinged to the reaming group cutter; the method comprises the following steps: S1, connection; s2, mounting is carried out; and S3, chambering.

Description

Technical Field

[0001] The invention relates to the technical field of deep hole blasting in open pit mines, and in particular to a deep hole blasting arrangement device and a blasting method thereof. Background Art

[0002] During deep hole blasting in open pit mines, the crushing effect is not ideal due to the uneven distribution of explosive energy. In order to increase the explosive energy, the hole shape of the blasting deep hole is changed to achieve efficient crushing effect.

[0003] Therefore, the present invention provides a deep hole blasting arrangement device and a blasting method thereof in an open-pit mine. Summary of the Invention

[0004] In view of the defects in the prior art, the present invention provides a deep hole blasting arrangement device and a blasting method in an open-pit mine to improve the blasting effect.

[0005] In the first aspect, the present invention provides a device for blasting holes in open-pit mines, comprising: a central group shaft; one end of the central rotating shaft extends into the deep hole of the open-pit mine, and the other end is connected to an external power source for transmission; the central group shaft includes at least one rotating shaft, and the rotating shafts are connected one by one; a bottom hole reaming part, which is detachably mounted on the central group shaft and is located on the rotating shaft and close to the bottom of the deep hole in the open-pit mine; the bottom hole reaming part includes a mounting sleeve, at least one reaming group cutter and at least one telescopic member; the mounting sleeve is slidably mounted on the central group shaft and fixedly connected to the rotating shaft; the reaming group cutter is mounted on the mounting sleeve and is evenly distributed along the radial direction of the mounting sleeve; and one end of the reaming group cutter is hinged to the mounting sleeve, and the other end of the reaming group cutter abuts against the hole wall of the blasting hole; wherein one end of the telescopic member is mounted on the mounting sleeve and hinged to the mounting sleeve, and the other end of the telescopic member is hinged to the reaming group cutter.

[0006] Furthermore, the shaft is provided with an external mounting thread and an internal mounting thread; wherein the external mounting thread and the internal mounting thread are respectively provided at both ends of the shaft; and any two adjacent shafts can be detachably connected via the external mounting thread and the internal mounting thread. In actual use, this connection method is efficient and stable, and is also easy to disassemble.

[0007] Furthermore, the rotating shaft is also equipped with an electromagnetic segment. The mounting sleeve is made of a metal material. When the electromagnetic segment is energized by an external power source, it magnetically connects with the mounting sleeve and magnetically fixes the mounting sleeve to the rotating shaft. In actual use, this design is designed to achieve an effective magnetic connection with the mounting sleeve, thereby ensuring the effective fixation of the reaming tool assembly to the mounting sleeve. At the same time, the multiple electromagnetic segments on multiple rotating shafts can effectively reduce impact, and the electromagnetic fixed connection method also facilitates control.

[0008] Furthermore, the mounting sleeve is provided with at least one main hinge seat, located away from the electromagnetic section and evenly distributed along the radial direction of the mounting sleeve. The reaming tool assembly includes a main support frame, one end of which is hinged to the main hinge seat. In practical application, the purpose of this design is to achieve effective support for the main support frame, facilitate installation, and enable articulated rotation.

[0009] Furthermore, the hole enlarging blade assembly also includes a main scraper, which is mounted on the other end of the main support frame. In actual use, the purpose of this design is to facilitate the expansion of the bottom. In actual operation, the main scraper rotates at high speed to achieve the expansion of the bottom of the deep hole. This ensures that a larger hole is formed at the bottom, which facilitates subsequent charging and can generate a larger impact.

[0010] Furthermore, the mounting sleeve is provided with at least one support hinge seat, one side of which is close to the main support frame and the other side is close to the electromagnetic section. In actual use, the purpose of this design is to facilitate the support of the telescopic member so that it can achieve a repeated support effect.

[0011] Furthermore, the telescopic member includes a telescopic cylinder, and the main support frame is provided with a connecting hinge seat; one end of the telescopic cylinder is hinged to the supporting hinge seat, and the other end of the telescopic cylinder is connected to the connecting hinge seat. In actual operation, this design can effectively ensure the support connection.

[0012] Furthermore, the reaming tool assembly also includes a fixed magnetic block, which is fixedly mounted on the main support frame, and the main support frame is magnetically connected to the mounting sleeve via the fixed magnetic block. In actual use, the purpose of this design is to facilitate the retraction of the tool. In actual work, the magnetic attraction effect of the fixed magnetic block of this design is used to achieve effective magnetic fixation; then, the expansion effect is achieved through the above-mentioned telescopic cylinder, and then, in actual work, when the device is placed into the blasting deep hole, magnetic absorption is achieved through the above-mentioned fixed magnetic block; when it is necessary to expand in the blasting deep hole and to perform bottom reaming of the blasting deep hole, the output shaft of the above-mentioned telescopic cylinder is extended to achieve expansion, and the central group shaft is driven by an external power source to drive the device to rotate and achieve bottom reaming.

[0013] From the above technical solution, it can be seen that the beneficial effects of the deep hole blasting arrangement device for open-pit mines provided by the present invention are:

[0014] (1) In actual application, the purpose of this design is to achieve drive and facilitate the expansion of the bottom of the deep hole, so that after loading, there will be more explosives at the bottom than at the top, achieving a high explosion at the bottom hole, thereby improving the output efficiency of the coal mine.

[0015] (2) In order to achieve the above-mentioned bottom hole expansion requirements, the bottom hole expansion part adopted in this application is detachably mounted on the center group shaft, which facilitates the disassembly and maintenance of the components of the bottom hole expansion part, effectively improving daily maintenance.

[0016] (3) The retractable and expandable design of the bottom hole expansion portion can help realize the bottom hole expansion molding, and the umbrella-like design it adopts can be expanded at the bottom, so that the demand for rotary hole expansion can be easily formed.

[0017] In a second aspect, the present invention provides a method for deep hole blasting in an open pit mine, comprising the following steps:

[0018] Step 1: Connect multiple shafts front to back and place them into a deep hole in an open pit mine;

[0019] Step 2: Install, place the bottom hole part as a whole on the rotating shaft into the deep hole;

[0020] Step 3: Expand the hole, first start the electromagnetic section, then start the telescopic cylinder, and finally start the external power source.

[0021] From the above technical solution, it can be seen that the beneficial effects of the deep hole blasting method in open-pit mines provided by the present invention are: this method can quickly and efficiently realize bottom hole expansion, thereby facilitating the arrangement of deep hole blasting in open-pit mines and facilitating subsequent blasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for the specific embodiments or the description of the prior art. In all the drawings, the various elements or parts are not necessarily drawn according to the actual scale.

[0023] Figure 1 A schematic diagram of a deep hole blasting arrangement device in an open-pit mine according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 The enlarged structural diagram of point A is shown;

[0025] Figure 3 Schematic diagram of the expansion work of the reaming tool assembly installed on the sliding sleeve in the present invention;

[0026] Figure 4 A schematic diagram of the workflow of a deep hole blasting method in an open pit mine according to the present invention;

[0027] Reference numerals:

[0028] Central group shaft 1, rotating shaft 11, mounting connecting external thread 111, mounting connecting internal thread 112, electromagnetic section 113, bottom hole reaming part 2, mounting sleeve 21, main hinge seat 211, supporting hinge seat 212, reaming group knife 22, main support frame 221, connecting hinge seat 2211, main scraper 222, fixed magnetic block 223, telescopic part 23, telescopic cylinder 231. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0030] The embodiment is basically as shown in the attached Figures 1 to 4 As shown:

[0031] like Figures 1-4 As shown, the present embodiment provides a deep hole blasting arrangement device and a blasting method in an open-pit mine, which can improve the blasting effect.

[0032] In the first aspect, the present invention provides a device for blasting holes in open-pit mines, comprising: a central group shaft 1; one end of the central rotating shaft 11 extends into the deep hole of the open-pit mine, and the other end is connected to an external power source; the central group shaft 1 includes at least one rotating shaft 11, and the rotating shafts 11 are connected one by one; a bottom hole reaming portion 2, the bottom hole reaming portion 2 is detachably mounted on the central group shaft 1, and is located on the rotating shaft 11 and close to the bottom of the deep hole in the open-pit mine; the bottom hole reaming portion 2 includes a mounting sleeve 21, at least one reaming group cutter 22 and at least one extending member. The telescopic member 23 is mounted on the mounting sleeve 21 and is slidably mounted on the central shaft 1 and is fixedly connected to the rotating shaft 11. The reaming cutter group 22 is mounted on the mounting sleeve 21 and is evenly distributed along the radial direction of the mounting sleeve 21. One end of the reaming cutter group 22 is hinged to the mounting sleeve 21, and the other end of the reaming cutter group 22 abuts against the hole wall of the blasting hole. One end of the telescopic member 23 is mounted on the mounting sleeve 21 and is hinged to the mounting sleeve 21, and the other end of the telescopic member 23 is hinged to the reaming cutter group 22. In actual use, the purpose of this design is to achieve drive, facilitate reaming at the bottom of the deep hole, and then after charging, achieve more explosives at the bottom than at the top, achieve high explosion at the bottom hole, and thereby increase the output efficiency of the coal mine. In order to achieve the above-mentioned bottom hole expansion requirements, the bottom hole expansion unit 2 used in this application is detachably mounted on the center group shaft 1, which facilitates the disassembly and maintenance of the components of the bottom hole expansion unit 2, effectively improving daily maintenance. Among them, the retractable and expandable design adopted by the bottom hole expansion unit 2 can help achieve the bottom hole expansion forming. The umbrella-like design adopted by the bottom expansion unit 2 can be expanded at the bottom, which can facilitate the formation of the rotational hole expansion requirement.

[0033] In this embodiment, the rotating shaft 11 is provided with an external mounting thread 111 and an internal mounting thread 112, respectively provided at each end of the rotating shaft 11. Any two adjacent rotating shafts 11 can be detachably connected via the external mounting thread 111 and the internal mounting thread 112. In practice, this connection method is efficient and stable, and also facilitates disassembly.

[0034] In this embodiment, the rotating shaft 11 is further provided with an electromagnetic section 113. The mounting sleeve 21 is made of a metal material. When energized by an external power source, the electromagnetic section 113 magnetically connects with the mounting sleeve 21 and magnetically secures the mounting sleeve 21 to the rotating shaft 11. In practice, this design is intended to achieve an effective magnetic connection with the mounting sleeve 21, thereby ensuring effective fixation of the reaming tool assembly 22 to the mounting sleeve 21. Simultaneously, by utilizing multiple electromagnetic sections 113 on multiple rotating shafts 11, impact can be effectively reduced. Furthermore, the electromagnetic fixed connection method also facilitates control.

[0035] In this embodiment, the mounting sleeve 21 is further provided with at least one main hinge seat 211, which is located away from the electromagnetic section 113 and evenly distributed along the radial direction of the mounting sleeve 21. The reaming tool assembly 22 includes a main support frame 221, one end of which is hinged to the main hinge seat 211. In actual use, the purpose of this design is to achieve effective support for the main support frame 221, facilitate installation, and also enable hinged rotation.

[0036] In this embodiment, the reaming blade assembly 22 further includes a main scraper 222, which is mounted on the other end of the main support frame 221. In actual use, the purpose of this design is to facilitate the expansion of the bottom. In actual operation, the high-speed rotating main scraper 222 is used to expand the bottom of the deep hole. In this way, a larger hole can be formed at the bottom, which is convenient for subsequent charging and can form a larger impact.

[0037] In this embodiment, the mounting sleeve 21 is further provided with at least one support hinge seat 212, one side of which is close to the main support frame 221 and the other side is close to the electromagnetic section 113. In actual use, the purpose of this design is to facilitate the support of the telescopic member 23 so that it can repeatedly achieve the supporting effect.

[0038] In this embodiment, the telescopic member 23 includes a telescopic cylinder 231, and the main support frame 221 is provided with a connecting hinge seat 2211. One end of the telescopic cylinder 231 is hinged to the support hinge seat 212, and the other end of the telescopic cylinder 231 is connected to the connecting hinge seat 2211. In actual operation, this design can effectively ensure the support connection.

[0039] In this embodiment, the reaming tool assembly 22 further includes a fixed magnet 223, which is fixedly mounted on the main support frame 221, and the main support frame 221 is magnetically connected to the mounting sleeve 21 via the fixed magnet 223. In actual use, the purpose of this design is to facilitate the retraction of the tool. In actual work, the magnetic attraction effect of the fixed magnet 223 of this design is used to achieve effective magnetic fixation; then, the expansion effect is achieved through the telescopic cylinder 231, and in actual work, when the device is placed into a deep blasting hole, magnetic absorption is achieved through the fixed magnet 223; when it is necessary to expand in the deep blasting hole and to perform bottom reaming of the deep blasting hole, the output shaft of the telescopic cylinder 231 is extended to achieve expansion, and the central group shaft 1 is driven by an external power source to drive the device to rotate and achieve bottom reaming.

[0040] In a second aspect, the present invention provides a method for deep hole blasting in an open pit mine, comprising the following steps:

[0041] Step 1: Connect multiple rotating shafts 11 front to back and place them into a deep hole in an open-pit mine;

[0042] Step 2: Install, placing the bottom hole portion 2 as a whole on the rotating shaft 11 in the deep hole;

[0043] Step 3: Expand the hole, first start the electromagnetic section 113, then start the telescopic cylinder 231, and finally start the external power source.

[0044] This method can quickly and efficiently realize bottom hole expansion, thereby facilitating the arrangement of deep hole blasting in open-pit mines and facilitating subsequent blasting.

[0045] To sum up, this deep hole blasting device and blasting method in open-pit mines are not only reasonably designed but also simple to operate. They can effectively realize the blasting control of deep holes in open-pit mines. Moreover, they can achieve efficient charging by expanding the bottom of the deep holes, thereby improving the subsequent blasting efficiency. Therefore, this device is suitable for industry promotion.

[0046] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A deep hole blasting device for open-pit mines, characterized in that: include: A central shaft group; one end of the central shaft extends into a deep hole in the open-pit mine, and the other end is connected to an external power source; the central shaft group includes at least one shaft, and the shafts are connected one by one; A bottom hole reaming portion, which is detachably mounted on the central assembly shaft and located on the rotating shaft near the bottom of the deep hole in the open-pit mine; the bottom hole reaming portion comprises a mounting sleeve, at least one reaming cutter assembly, and at least one telescopic member; the mounting sleeve is slidably mounted on the central assembly shaft and fixedly connected to the rotating shaft; The reaming tool set is installed on the mounting sleeve and is evenly distributed along the radial direction of the mounting sleeve; one end of the reaming tool set is hinged to the mounting sleeve, and the other end of the reaming tool set is in contact with the hole wall of the blasting hole; one end of the telescopic member is installed on the mounting sleeve and is hinged to the mounting sleeve, and the other end of the telescopic member is hinged to the reaming tool set.

2. The deep hole blasting arrangement device for open-pit mines according to claim 1, characterized in that: The rotating shaft is provided with an external mounting connection thread and an internal mounting connection thread; wherein the external mounting connection thread and the internal mounting connection thread are respectively provided at both ends of the rotating shaft; and any two adjacent rotating shafts are detachably connected via the external mounting connection thread and the internal mounting connection thread.

3. The deep hole blasting arrangement device for open-pit mines according to claim 1, characterized in that: The rotating shaft is further provided with an electromagnetic section, and the mounting sleeve is made of metal material. After the electromagnetic section is energized by an external power source, it is magnetically connected to the mounting sleeve and magnetically fixes the mounting sleeve on the rotating shaft.

4. The deep hole blasting arrangement device for open-pit mines according to claim 3, characterized in that: The mounting sleeve is also provided with at least one main hinge seat, and the main hinge seat is located away from the electromagnetic section and is evenly distributed along the radial direction of the mounting sleeve; the reaming tool assembly includes a main support frame, one end of which is hinged to the main hinge seat.

5. The deep hole blasting arrangement device for open-pit mines according to claim 4, characterized in that: The reaming tool assembly also includes a main scraper, which is installed at the other end of the main support frame.

6. The deep hole blasting arrangement device for open-pit mines according to claim 4, characterized in that: The mounting sleeve is further provided with at least one supporting hinge seat, one side of the supporting hinge seat is close to the direction of the main supporting frame, and the other side is close to the direction of the electromagnetic section.

7. The deep hole blasting arrangement device for open-pit mines according to claim 4, characterized in that: The telescopic member includes a telescopic cylinder, and the main support frame is provided with a connecting hinge seat; One end of the telescopic cylinder is hinged to the supporting hinge seat, and the other end of the telescopic cylinder is connected to the connecting hinge seat.

8. The deep hole blasting arrangement device for open-pit mines according to claim 4, characterized in that: The reaming tool assembly also includes a fixed magnetic block, which is fixedly mounted on the main support frame, and the main support frame is magnetically connected to the mounting sleeve via the fixed magnetic block.

9. A deep hole blasting method in an open pit mine, characterized in that: The method of using a deep hole blasting arrangement device for open-pit mines according to any one of claims 1 to 8 comprises the following steps: Step 1: Connect multiple shafts front to back and place them into a deep hole in an open pit mine; Step 2: Installation: Place the bottom hole part as a whole on the rotating shaft of the deep hole; Step 3: Expand the hole, first start the electromagnetic section, then start the telescopic cylinder, and finally start the external power source.

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