Coal mine blasting flying stone prevention device

Abstract

The utility model belongs to the technical field of coal mine blasting, and particularly discloses a flying stone preventing device for coal mine blasting. The device comprises an adjustable anti-flying-stone mechanism, the adjustable anti-flying-stone mechanism comprises a bottom plate and a plurality of sets of mounting frames, first rotating frames are fixedly mounted at the two ends, close to one side, of the upper portion of the bottom plate correspondingly, and through the arranged adjustable anti-flying-stone mechanism, after a foldable protection plate is unfolded, through rotating rods on the adjacent mounting frames, the adjustable anti-flying-stone mechanism can be used for preventing flying stone from falling off. According to the foldable protection plate, the first rotating frame rotates along the corresponding second rotating frame, the mounting frame can smoothly turn over by 90 degrees under the action, then the bolts on one group of mounting frames are in threaded connection into the threaded holes of the adjacent mounting frames, the whole mechanism can be unfolded and fixed, flying stones can be effectively resisted through the foldable protection plate, and the safety of the mechanism is improved. Meanwhile, the number of the adjustable flying stone prevention mechanisms can be flexibly increased or decreased according to the size of a coal mine site needing to be blasted, and therefore the application range of the adjustable flying stone prevention mechanisms is remarkably widened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mine blasting technical field, especially relate to a coal mine blasting anti -flying rock device. BACKGROUND

[0002] In the process of coal mining, blasting technology is often used to break hard coal seams and rocks to improve mining efficiency. However, coal mine blasting also poses a huge safety hazard, and any slight mistake can cause serious accidents such as explosions, collapses, and flying rock injuries.

[0003] The applicant found, after searching, that patent document 1 discloses a coal mine blasting anti -flying rock device. This patent document can effectively prevent flying rocks from splashing and injuring people or damaging equipment by setting up a protective device that allows the plummet plate to drive the protective net to sag and close the roadway during blasting.

[0004] However, the size of the protective net in this patent document 1 is fixed, so it can only adapt to different use heights and cannot adapt to different use widths, resulting in limited application range.

[0005] Based on this, the utility model provides a coal mine blasting anti -flying rock device.

[0006] Patent document 1

[0007] Chinese utility model patent, authorized publication number: CN221037139U, publication date: 2024.05.28. Utility model content

[0008] The utility model aims to provide a coal mine blasting anti -flying rock device, which can solve the problem of fixed size of the protective net in the existing coal mine blasting anti -flying rock device, which can only adapt to different use heights and cannot adapt to different use widths, resulting in limited application range.

[0009] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0010] A coal mine blasting anti -flying rock device, comprising an adjustable anti -flying rock mechanism; the adjustable anti -flying rock mechanism comprises a bottom plate and multiple groups of mounting racks, and the first rotating frame is fixedly installed on both ends of the bottom plate near the upper side;

[0011] Multiple groups of mounting racks are fixedly installed with foldable protective plates in the middle, and rotating rods are fixedly installed at both sides near the one end, and second rotating frames are fixedly installed at both sides near the other end above, and the side of the multiple groups of mounting racks is connected with a rotating piece and a bolt through a fixed shaft.

[0012] The bottom of the bottom plate is provided with an adaptive hole near each end of one side, and the first rotating frame and the second rotating frame are of the same size;

[0013] The rotating rod on the bottommost mounting frame is rotatably connected to the inside of the first rotating frame, and the rotating rods on the other mounting frames are rotatably connected to the inside of the second rotating frame of the mounting frame below.

[0014] The fixing shaft is fixedly installed in the slot of the mounting frame;

[0015] The bolt is fixedly installed at the outer end of the rotating member, the rotating member is rotatably connected to the outer wall of the fixing shaft, and the other side of the mounting frame is provided with a threaded hole corresponding to the position of the fixing shaft;

[0016] The bolt is screw-connected with the threaded hole.

[0017] Preferably, the stable mechanism is arranged below the adjustable flystone prevention mechanism;

[0018] The stable mechanism comprises a heavy base, and threaded anchor rods are screw-connected to the surface of the heavy base near four corners, and a plurality of ground-anchoring rods are fixedly installed on the lower surface of the heavy base away from the four corners;

[0019] The upper end of the threaded anchor rod is screw-connected with the adaptive hole in the bottom of the bottom plate.

[0020] Preferably, the heavy base is fixedly installed with a connecting plate on one side, and a plug-in slot adapted to the connecting plate is arranged on the other side.

[0021] Preferably, a slot is arranged in the inside of the connecting plate, a strong spring is fixedly installed in the inside of the slot, an adapter is fixedly installed on the upper end of the strong spring, and the size of the adapter is adapted to the slot.

[0022] The utility model has the following advantages:

[0023] As described above, the utility model discloses a coal mine blasting fly stone prevention device, the device is through the adjustable fly stone prevention mechanism that sets up, after the folding protection board is unfolded, with the rotation rod on the adjacent mounting frame, along corresponding second rotation frame is rotated, under this action, the mounting frame can smoothly overturn ninety degrees, then, the bolt on a group of mounting frames is screwed to the threaded hole of adjacent mounting frame, the whole mechanism can be unfolded and fixed through this folding protection board, can effectively resist fly stone, prevent fly stone from flying out the blasting area, simultaneously, the mechanism can flexibly increase or reduce the quantity of adjustable fly stone prevention mechanism according to the size of the coal mine site that needs blasting, thereby significantly improve its application range. In addition, the utility model still sets up the firm mechanism, can be connected through the thread on the upper end of the threaded anchor rod and the bottom plate, is connected through the lower end and the ground anchor rod and ground, avoids the whole device to sway, simultaneously, when the power of blasting is larger, can erect multiple sets of devices, is connected through the connecting plate and corresponding plug -in slot, under the action of the powerful spring, the adapter will be close to the inner wall of plug -in slot, guarantees the stability of connection. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the front view of coal mine blasting fly stone prevention device in the utility model embodiment;

[0025] Figure 2 It is the rear view of coal mine blasting fly stone prevention device in the utility model embodiment;

[0026] Figure 3 It is the partial structure development drawing of adjustable fly stone prevention mechanism of the utility model;

[0027] Figure 4 It is the partial structure schematic drawing of adjustable fly stone prevention mechanism of the utility model one;

[0028] Figure 5 It is the partial structure schematic drawing of adjustable fly stone prevention mechanism of the utility model two;

[0029] Figure 6 It is the partial structure explosion drawing of adjustable fly stone prevention mechanism of the utility model;

[0030] Figure 7 It is the three-dimensional structure schematic drawing of firm mechanism of the utility model;

[0031] Figure 8 It is the partial structure explosion drawing of firm mechanism of the utility model.

[0032] In the drawing: 1-adjustable fly stone prevention mechanism;2-firm mechanism;

[0033] 101 - base plate; 102 - first rotating frame; 103 - mounting frame; 104 - rotating rod; 105 - second rotating frame; 106 - foldable guard plate; 107 - fixing shaft; 108 - rotating piece; 109 - bolt; 110 - threaded hole;

[0034] 201 - weighted base; 202 - threaded anchor rod; 203 - ground anchor rod; 204 - connecting plate; 205 - slot; 206 - strong spring; 207 - adapter; 208 - insertion slot. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0036] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present application.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0038] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0039] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In addition, the technical solutions of various embodiments of the utility model can be combined with each other, but must be based on the fact that a person having ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it shall be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0041] Embodiment 1

[0042] As Figures 1 to 6 shown, the embodiment discloses a coal mine blasting flystone prevention device to solve the problem that the size of the protective net in the existing coal mine blasting flystone prevention device is fixed, can only adapt to different use heights, cannot adapt to different use widths, and leads to limited application range.

[0043] The coal mine blasting flystone prevention device in the embodiment comprises an adjustable flystone prevention mechanism 1.

[0044] The adjustable flystone prevention mechanism 1 comprises a bottom plate 101 and a plurality of groups of mounting racks 103, and the first rotating frame 102 is fixedly installed above the bottom plate 101 and close to both ends of one side.

[0045] The rotating member 108 and the bolt 109 are connected to one side of the plurality of groups of mounting racks 103 through the fixed shaft 107.

[0046] The first rotating frame 102 and the second rotating frame 105 are consistent in size. The rotating shaft 104 on the bottommost mounting rack 103 is rotationally connected to the inside of the first rotating frame 102, the rotating shaft 104 on the remaining mounting racks 103 is rotationally connected to the inside of the second rotating frame 105 of the mounting rack 103 below, the fixed shaft 107 is fixedly installed in the slot on one side of the mounting rack 103, the bolt 109 is fixedly installed at the outer end of the rotating member 108, the rotating member 108 is rotationally connected to the outer wall of the fixed shaft 107, and the threaded hole 110 is formed in the position corresponding to the fixed shaft 107 on the other side of the mounting rack 103.

[0047] The slot is in a semi-closed state, so that the user can rotate the rotating member 108 through the opening of the slot, and the bolt 109 is conveniently screwed into the inside of the threaded hole 110.

[0048] Specifically, after unfolding the foldable protective plate 106, the mounting rack 103 can be turned by 90 degrees along the corresponding second rotating rack 105 by rotating the rotating rod 104 on the adjacent mounting rack 103, and then the bolts 109 on a group of mounting racks 103 are screwed into the threaded holes 110 of the adjacent mounting racks 103, so that the entire mechanism can be unfolded and fixed, and the flyrock can be resisted by the foldable protective plate 106 to prevent the flyrock from flying out of the blasting area. Meanwhile, the number of the adjustable flyrock prevention mechanism 1 can be increased or decreased according to the size of the coal mine site to be blasted, thereby improving the application range.

[0049] Embodiment 2

[0050] The coal mine blasting flyrock prevention device of this embodiment 2 is different from the above-mentioned embodiment 1 in the following technical features, and the remaining technical features can refer to the above-mentioned embodiment 1.

[0051] As shown in Figure 1 , Figure 2 , Figure 7 and Figure 8 , the adjustable flyrock prevention mechanism 1 is provided below with a stabilizing mechanism 2. The stabilizing mechanism 2 comprises a weighted base 201, and threaded anchor rods 202 are screw-connected to the surface of the weighted base 201 near the four corners. A plurality of ground anchoring rods 203 are fixedly installed on the lower surface of the weighted base 201 away from the four corners. The upper end of the threaded anchor rod 202 is screw-connected to the adaptive hole in the bottom of the bottom plate 101. A connecting plate 204 is fixedly installed on one side of the weighted base 201, and a plug-in slot 208 adaptive to the connecting plate 204 is formed on the other side of the weighted base 201. A slotted hole 205 is formed in the connecting plate 204, and a powerful spring 206 is fixedly installed in the slotted hole 205. An adapter 207 is fixedly installed on the upper end of the powerful spring 206, and the size of the adapter 207 is adaptive to the slotted hole 205.

[0052] The upper end of the threaded anchor rod 202 is provided with a thread on the outer wall, which can be screw-connected to the adaptive hole in the bottom of the bottom plate 101. The lower end of the threaded anchor rod 202 is the same size as the ground anchoring rod 203, which can stably install the weighted base 201 on the ground.

[0053] Specifically, the threaded anchor rod 202 can be connected to the bottom plate 101 through the thread on the upper end, and connected to the ground through the lower end and the ground anchoring rod 203, so as to avoid shaking of the entire device. When the blasting power is large, multiple devices can be erected, connected through the connecting plate 204 and the corresponding plug-in slot 208, and the adapter 207 will tightly adhere to the inner wall of the plug-in slot 208 under the action of the powerful spring 206, thereby ensuring the stability of the connection.

[0054] The working principle of the utility model is as follows: firstly, a proper number of adjustable anti-flying stone mechanisms 1 are selected, the bottom plate 101 is connected with the upper end of the threaded anchor rod 202 through the adaptive hole and the threaded anchor rod 202, then the ground anchor rod 203 at the bottom of the weighted base 201 is inserted into the ground, the stability of the weighted base 201 is ensured, when the power of blasting is large, multiple sets of devices are erected, the connecting plate 204 and the corresponding insertion slot 208 are connected, the adapter 207 is tightly attached to the inner wall of the insertion slot 208 under the action of the strong spring 206, the number of adjustable anti-flying stone mechanisms 1 is increased or decreased according to the size of the coal mine site to be blasted, finally, the foldable protective plate 106 is unfolded, the rotating rod 104 on the adjacent mounting frame 103 can rotate along the corresponding second rotating frame 105, so that the mounting frame 103 is turned by 90 degrees, then the bolt 109 on one set of mounting frames 103 is screwed into the threaded hole 110 of the adjacent mounting frame 103, the whole mechanism is unfolded and fixed, and the flying stones are resisted by the foldable protective plate 106.

[0055] Of course, the above only for the preferred embodiments of the utility model, not therefore limit the patent range of the utility model, all in the utility model of the utility model concept, use the utility model specification and the equivalent structure transformation of drawing contents, or direct / indirectly applied in other related technical fields are included in the patent protection scope of the utility model, should be protected by the utility model.

Claims

1. A coal mine blasting flyrock prevention device, characterized in that: it comprises an adjustable flyrock prevention mechanism (1); the adjustable flyrock prevention mechanism (1) comprises a bottom plate (101) and a plurality of mounting racks (103); a first rotating frame (102) is fixedly installed on the upper side of the bottom plate (101) near both ends; a foldable protective plate (106) is fixedly installed in the middle of each of the plurality of mounting racks (103), a rotating rod (104) is fixedly installed on one end of each of the plurality of mounting racks (103) near both sides, a second rotating frame (105) is fixedly installed on the other end of each of the plurality of mounting racks (103) near both sides, and a rotating piece (108) and a bolt (109) are connected to one side of each of the plurality of mounting racks (103) through a fixed shaft (107).

2. The coal mine blasting flyrock prevention device according to claim 1, characterized in that: adaptive holes are formed in the bottom of the bottom plate (101) near both ends; the first rotating frame (102) and the second rotating frame (105) are the same size; the rotating rod (104) on the bottommost mounting rack (103) is rotatably connected to the inside of the first rotating frame (102), and the rotating rod (104) on each of the remaining mounting racks (103) is rotatably connected to the inside of the second rotating frame (105) of the mounting rack (103) below.

3. The coal mine blasting flyrock prevention device according to claim 2, characterized in that: the fixed shaft (107) is fixedly installed in the slot on one side of the mounting rack (103), and the bolt (109) is fixedly installed on the outer end of the rotating piece (108); the rotating piece (108) is rotatably connected to the outer wall of the fixed shaft (107), and a threaded hole (110) is formed in the position corresponding to the fixed shaft (107) on the other side of the mounting rack (103); and the bolt (109) is threadedly connected with the threaded hole (110).

4. The coal mine blasting flyrock prevention device according to claim 3, characterized in that: a stabilizing mechanism (2) is arranged below the adjustable flyrock prevention mechanism (1); the stabilizing mechanism (2) comprises a weighted base (201); threaded anchor rods (202) are threadedly connected to the surface of the weighted base (201) near the four corners, and a plurality of ground anchoring rods (203) are fixedly installed on the lower surface of the weighted base (201) away from the four corners; and the upper end of the threaded anchor rod (202) is threadedly connected with the adaptive hole in the bottom of the bottom plate (101).

5. The coal mine blasting flyrock prevention device according to claim 4, characterized in that: a connecting plate (204) is fixedly installed on one side of the weighted base (201), and a plug-in slot (208) adapted to the connecting plate (204) is formed on the other side of the weighted base (201).

6. The coal mine blasting flyrock prevention device according to claim 5, characterized in that: a slot (205) is formed in the inside of the connecting plate (204); a powerful spring (206) is fixedly installed in the inside of the slot (205), and an adapter (207) is fixedly installed on the upper end of the powerful spring (206); and the size of the adapter (207) is adapted to the slot (205). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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