Oxygen concentration detection device for coal mine safety

Abstract

The utility model discloses an oxygen concentration detection device for coal mine safety, which relates to the technical field of concentration detection and comprises a shell and a detection head, the detection head is movably connected to the inner side of the shell, the bottom end of the detection head is fixedly connected with a sealing block, the bottom end of the shell is movably connected with a plurality of baffles through rotating shafts, and the baffles are fixedly connected with the sealing block. The section of each baffle is in a fan shape. Through the arrangement of the driving mechanism, when the push rod moves upwards, the reset spring is compressed, and the baffle rotates downwards around the rotating shaft of the baffle under the action of the gravity of the baffle and the thrust of the sealing block, the detection head moves out of the inner side of the shell, and on the contrary, when the detection head moves back to the inner side of the shell, the traction rope resets, and the detection head moves back to the inner side of the shell. Under the action of the reset spring, the push rod pushes the baffle rotating shaft to rotate, so that the baffle is reset, the bottom end of the shell is sealed and shielded, moisture outside the environment is prevented from entering the detection head, shielding of sundries to the detection head is reduced, and protectiveness of the detection head is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concentration detection, in particular to an oxygen concentration detection device for coal mine safety. Background Art

[0002] In the field of coal mine safety, oxygen concentration detection is crucial. In the coal mine working environment, abnormal fluctuations in oxygen concentration may pose a threat to the health and safety of miners. In order to prevent safety accidents caused by abnormal oxygen concentration, such as hypoxia or fire, a special oxygen concentration detection device is required.

[0003] However, there are some problems with existing oxygen concentration detection devices. For example, some devices have a limited detection range and cannot cover a wide area, and the installation and fixing methods are more troublesome; other devices need to be improved in terms of response speed and accuracy. In addition, the coal mine environment is usually harsh, and the device needs to have a certain degree of protection to adapt to this environment, such as preventing water vapor from entering the equipment and preventing debris from blocking the sensor lens. Therefore, an oxygen concentration detection device for coal mine safety is needed to solve the existing deficiencies. Utility Model Content

[0004] The utility model aims to provide an oxygen concentration detection device for coal mine safety, which reduces the shielding of the detection head by debris through the arranged driving mechanism and improves the protection of the detection head; and improves the stability of the clamping of the clamping strip through the arranged clamping mechanism.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model is an oxygen concentration detection device for coal mine safety, comprising a shell and a detection head, the detection head is movably connected to the inner side of the shell, and the bottom end of the detection head is fixedly connected to a sealing block, the bottom end of the shell is movably connected to a plurality of baffles through a rotating shaft, the cross-sections of the baffles are all fan-shaped, the sealing block is located on the inner side of the baffle, and the outer side surface of the sealing block fits with the inner side surface of the baffle, a driving mechanism is arranged inside the shell, one end of the driving mechanism is fixedly connected to the top end of the detection head, and the other end of the driving mechanism is movably connected to the rotating shaft of the baffle, and the top end of the shell is fixedly connected to a clamping mechanism.

[0007] The utility model is further configured as follows: the driving mechanism includes a servo motor, a screw and a movable frame, the screw passes through the center of the movable frame, and the screw is threadedly connected to the movable frame, the movable frame is movably connected to the inside of the shell, and the bottom end of the movable frame is fixedly connected to the top of the detection head, the servo motor is fixedly connected to the inner top of the shell, and the output end of the servo motor is fixedly connected to the top of the screw.

[0008] The utility model is further configured such that the driving mechanism also includes a push rod, a return spring and a traction rope, and the push rod, the return spring and the traction rope are distributed in a circular array, one end of the traction rope is respectively fixedly connected to the top of the push rod, and the other end of the traction rope is respectively fixedly connected to the top of the moving frame, the bottom end of the push rod is respectively in contact with the top of the rotating shaft of the baffle, and the return spring is sleeved on the outside of the traction rope.

[0009] The utility model is further configured that a plurality of long rods are fixedly connected to the outer side of the shell, the push rods are movably connected to the bottom ends of the long rods, the bottom ends of the return springs are fixedly connected to the top ends of the push rods, and the top ends of the return springs are fixedly connected to the insides of the long rods.

[0010] The utility model is further configured as follows: the clamping mechanism includes a clamping strip, a limiting rod and a compression spring, the clamping strip and the compression spring are each in two groups, and the clamping strip, the limiting rod and the compression spring are symmetrically arranged, the limiting rod passes through the bottom end of the clamping strip, and the limiting rod is movably connected to the clamping strip, the compression springs are respectively located at both ends of the limiting rod, and one end of the compression spring is fixedly connected to one side of the limiting rod.

[0011] The utility model is further configured such that the clamping mechanism also includes a wedge block and a push block, the wedge blocks are divided into two groups, and each group of wedge blocks is symmetrically arranged, the wedge blocks are respectively fixedly connected to the two ends of the limit rod, the opposite sides of the wedge blocks are constructed with inclined surfaces, the push block is T-shaped, the end of the push block is in contact with the inclined surface of the wedge block, and the other end of the push block extends to the outside of the shell.

[0012] The utility model is further configured such that a group of symmetrical slide grooves are opened at the top of the shell, the bottom end of the clamping strip is movably connected to the inside of the slide groove, the limit rod is movably connected to the inside of the top of the shell, and the push block is movably connected to the inside of the top of the shell.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model is provided with a driving mechanism, when the push rod moves upward, the reset spring is compressed, and under the action of the baffle's own gravity and the thrust of the sealing block, the baffle rotates downward around its rotating shaft, so that the detection head moves out from the inner side of the shell. Conversely, when the detection head moves back to the inner side of the shell, the traction rope is reset, and under the action of the reset spring, the push rod pushes the baffle rotating shaft to rotate, thereby resetting the baffle and sealing the bottom end of the shell, thereby reducing moisture from outside the environment from entering the detection head, reducing the blocking of the detection head by debris, and improving the protection of the detection head.

[0015] 2. The utility model provides a clamping mechanism that squeezes the two push rods inward at the same time so that their ends rub against the inclined surface of the wedge block, thereby driving the limit rods to move away from each other. At this time, the compression spring becomes shorter, so that the top ends of the clamping strips move away from each other to form a gap, so that it is convenient to place the support rod on the inner side of the clamping strip, release the push rod, and under the action of the compression spring, the clamping strips move closer to each other to clamp the support rod. Moreover, since the bottom end of the clamping strip is connected to the movable rod of the limit rod, the bottom end of the clamping strip can be moved along the slide groove, thereby adjusting the position of the clamping strip and improving the stability of the clamping strip.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the driving mechanism structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the clamping mechanism of the utility model;

[0021] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0022] In the figure: 1. housing; 2. detection head; 3. sealing block; 4. baffle; 5. driving mechanism; 501. servo motor; 502. screw; 503. moving frame; 504. push rod; 505. reset spring; 506. traction rope; 6. clamping mechanism; 601. clamping strip; 602. limit rod; 603. compression spring; 604. wedge block; 605. push block; 7. long rod; 8. slide groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-4 As shown, the utility model provides a technical solution: an oxygen concentration detection device for coal mine safety, comprising a shell 1 and a detection head 2, the detection head 2 is movably connected to the inner side of the shell 1, and the bottom end of the detection head 2 is fixedly connected to a sealing block 3, the bottom end of the shell 1 is movably connected to a plurality of baffles 4 through a rotating shaft, the cross-section of the baffles 4 is fan-shaped, the sealing block 3 is located on the inner side of the baffle 4, and the outer side surface of the sealing block 3 is fitted with the inner side surface of the baffle 4, a driving mechanism 5 is arranged inside the shell 1, one end of the driving mechanism 5 is fixedly connected to the top of the detection head 2, and the other end of the driving mechanism 5 is movably connected to the rotating shaft of the baffle 4, and a clamping mechanism 6 is fixedly connected to the top of the shell 1.

[0025] By squeezing the two push rods inward at the same time, the ends of the two push rods 604 rub against the inclined surface of the wedge block 604, thereby driving the limit rods 602 to move away from each other. At this time, the compression spring 603 becomes shorter, so that the top ends of the clamping strips 601 move away from each other, forming a gap, so as to facilitate placing the support rod on the inner side of the clamping strip 601, loosen the push rod 504, and under the action of the compression spring 603, the clamping strips 601 move closer to each other, thereby clamping the support rod, and because the bottom end of the clamping strip 601 is connected to the movable rod of the limit rod 602, the bottom end of the clamping strip 601 can be moved along the slide groove 8, thereby adjusting the position of the clamping strip 601 and improving the clamping stability of the clamping strip 601; when the shell 1 is fixed by the clamping strip 601 After the determination is completed, the servo motor 501 is started to drive the screw 502 to rotate, so that the movable frame 503 moves downward, thereby driving the detection head and the sealing block to move downward synchronously, and at this time, the traction rope 506 is driven to move synchronously, so that the push rod 504 moves upward, compressing the reset spring 505, and under the action of the baffle 4's own gravity and the thrust of the sealing block, the baffle 4 rotates downward around its axis, so that the detection head moves out from the inner side of the shell 1, conversely, when the detection head moves back to the inner side of the shell 1, the traction rope 506 is reset, and under the action of the reset spring 505, the push rod 504 pushes the baffle 4 axis to rotate, thereby resetting the baffle 4, and then sealing and covering the bottom end of the shell 1.

[0026] like Figure 1 , Figure 2 and Figure 4As shown, the driving mechanism 5 includes a servo motor 501, a screw rod 502 and a moving frame 503, the screw rod 502 passes through the center of the moving frame 503, and the screw rod 502 is threadedly connected to the moving frame 503, the moving frame 503 is movably connected to the inside of the housing 1, and the bottom end of the moving frame 503 is fixedly connected to the top of the detection head 2, the servo motor 501 is fixedly connected to the inner top of the housing 1, and the output end of the servo motor 501 is fixedly connected to the top of the screw rod 502, the driving mechanism 5 also includes a push rod 504, a reset spring 505 and a traction rope 506, the push rod 504, the reset spring 505 The traction rope 506 is distributed in a circular array, one end of the traction rope 506 is fixedly connected to the top of the push rod 504, and the other end of the traction rope 506 is fixedly connected to the top of the moving frame 503, the bottom end of the push rod 504 is respectively in conflict with the top of the rotating shaft of the baffle 4, the return spring 505 is sleeved on the outside of the traction rope 506, and several long rods 7 are fixedly connected to the outside of the outer shell 1, the push rod 504 is movably connected to the bottom end of the long rod 7, the bottom end of the return spring 505 is respectively fixedly connected to the top of the push rod 504, and the top end of the return spring 505 is respectively fixedly connected to the inside of the long rod 7.

[0027] When the shell 1 is fixed by the clamping strip 601, the servo motor 501 is started to drive the screw 502 to rotate, thereby moving the movable frame 503 downward, thereby driving the detection head and the sealing block to move downward synchronously, and at this time driving the traction rope 506 to move synchronously, so that the push rod 504 moves upward, compressing the reset spring 505, and under the action of the baffle 4's own gravity and the thrust of the sealing block, the baffle 4 rotates downward around its axis, so that the detection head moves out from the inner side of the shell 1, conversely, when the detection head moves back to the inner side of the shell 1, the traction rope 506 is reset, and under the action of the reset spring 505, the push rod 504 pushes the baffle 4 axis to rotate, thereby resetting the baffle 4, and then sealing and shielding the bottom end of the shell 1, thereby reducing the moisture outside the environment from entering the detection head, and reducing the blocking of the detection head by debris, thereby improving the protection of the detection head.

[0028] like Figure 1 and Figure 3As shown, the clamping mechanism 6 includes a clamping strip 601, a limiting rod 602 and a compression spring 603. The clamping strip 601 and the compression spring 603 are both in two groups, and the clamping strip 601, the limiting rod 602 and the compression spring 603 are symmetrically arranged. The limiting rod 602 runs through the bottom end of the clamping strip 601, and the limiting rod 602 is movably connected to the clamping strip 601. The compression spring 603 is respectively located at both ends of the limiting rod 602, and one end of the compression spring 603 is fixedly connected to one side of the limiting rod 602. The clamping mechanism 6 also includes a wedge block 604 and a push block 605. The wedge block 604 There are two groups, and each group of wedge blocks 604 is symmetrically arranged, the wedge blocks 604 are respectively fixedly connected to the two ends of the limit rod 602, and the opposite sides of the wedge blocks 604 are constructed with inclined surfaces. The push block 605 is T-shaped, and the end of the push block 605 is in contact with the inclined surface of the wedge block 604, and the other end of the push block 605 extends to the outside of the shell 1. A group of symmetrical slide grooves 8 are opened at the top of the shell 1, and the bottom end of the clamping strip 601 is movably connected to the inside of the slide groove 8, the limit rod 602 is movably connected to the inside of the top of the shell 1, and the push block 605 is movably connected to the inside of the top of the shell 1.

[0029] By squeezing the two push rods inward at the same time, the ends of the push rods 601 rub against the inclined surface of the wedge block 604, thereby driving the limit rods 602 to move away from each other. At this time, the compression spring 603 becomes shorter, so that the top ends of the clamping strips 601 move away from each other, forming a gap, so as to facilitate placing the support rod on the inner side of the clamping strip 601, loosen the push rod 504, and under the action of the compression spring 603, the clamping strips 601 move closer to each other, thereby clamping the support rod, and because the bottom end of the clamping strip 601 is connected to the movable rod of the limit rod 602, the bottom end of the clamping strip 601 can be moved along the slide groove 8, thereby adjusting the position of the clamping strip 601 and improving the clamping stability of the clamping strip 601.

[0030] Working principle: When in use, by squeezing the two push rods inward at the same time, the ends of the push rods 601 rub against the inclined surface of the wedge block 604, thereby driving the limit rods 602 to move away from each other. At this time, the compression spring 603 becomes shorter, so that the top ends of the clamping strips 601 move away from each other, forming a gap, so that it is convenient to place the support rod on the inner side of the clamping strip 601, loosen the push rod 504, and under the action of the compression spring 603, the clamping strips 601 move closer to each other, thereby clamping the support rod, and because the bottom end of the clamping strip 601 is connected to the movable rod of the limit rod 602, the bottom end of the clamping strip 601 can be moved along the slide groove 8, thereby adjusting the position of the clamping strip 601 and improving the clamping stability of the clamping strip 601; when the shell 1 passes through the clamping strip After 601 is fixed, the servo motor 501 is started to drive the screw 502 to rotate, so that the movable frame 503 moves downward, thereby driving the detection head and the sealing block to move downward synchronously, and at this time, the traction rope 506 is driven to move synchronously, so that the push rod 504 moves upward, compressing the reset spring 505, and under the action of the baffle 4's own gravity and the thrust of the sealing block, the baffle 4 rotates downward around its axis, so that the detection head moves out from the inner side of the shell 1, conversely, when the detection head moves back to the inner side of the shell 1, the traction rope 506 is reset, and under the action of the reset spring 505, the push rod 504 pushes the baffle 4 axis to rotate, thereby resetting the baffle 4, and then sealing and covering the bottom end of the shell 1.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An oxygen concentration detection device for coal mine safety, comprising a housing (1) and a detection head (2), characterized in that: The detection head (2) is movably connected to the inner side of the shell (1), and the bottom end of the detection head (2) is fixedly connected to a sealing block (3). The bottom end of the shell (1) is movably connected to a plurality of baffles (4) via a rotating shaft, and the cross-sections of the baffles (4) are all fan-shaped. The sealing block (3) is located on the inner side of the baffle (4), and the outer side surface of the sealing block (3) is in contact with the inner side surface of the baffle (4). A driving mechanism (5) is arranged inside the shell (1), one end of the driving mechanism (5) is fixedly connected to the top end of the detection head (2), and the other end of the driving mechanism (5) is movably connected to the rotating shaft of the baffle (4). The top end of the shell (1) is fixedly connected to a clamping mechanism (6).

2. The oxygen concentration detection device for coal mine safety according to claim 1 is characterized in that: The driving mechanism (5) comprises a servo motor (501), a screw rod (502) and a moving frame (503); the screw rod (502) passes through the center of the moving frame (503), and the screw rod (502) and the moving frame (503) are threadedly connected; the moving frame (503) is movably connected to the inside of the housing (1), and the bottom end of the moving frame (503) is fixedly connected to the top end of the detection head (2); the servo motor (501) is fixedly connected to the inner top end of the housing (1), and the output end of the servo motor (501) is fixedly connected to the top end of the screw rod (502).

3. The oxygen concentration detection device for coal mine safety according to claim 2 is characterized in that: The driving mechanism (5) further comprises a push rod (504), a return spring (505) and a traction rope (506); the push rod (504), the return spring (505) and the traction rope (506) are all distributed in a circular array; one end of the traction rope (506) is respectively fixedly connected to the top of the push rod (504), and the other end of the traction rope (506) is respectively fixedly connected to the top of the moving frame (503); the bottom end of the push rod (504) is respectively in contact with the top of the rotating shaft of the baffle (4); and the return spring (505) is sleeved on the outside of the traction rope (506).

4. The oxygen concentration detection device for coal mine safety according to claim 3 is characterized in that: A plurality of long rods (7) are fixedly connected to the outer side of the housing (1); the push rods (504) are movably connected to the bottom ends of the long rods (7); the bottom ends of the return springs (505) are fixedly connected to the top ends of the push rods (504); and the top ends of the return springs (505) are fixedly connected to the inside of the long rods (7).

5. The oxygen concentration detection device for coal mine safety according to claim 1 is characterized in that: The clamping mechanism (6) comprises a clamping strip (601), a limiting rod (602) and a compression spring (603); the clamping strip (601) and the compression spring (603) are each in two groups, and the clamping strip (601), the limiting rod (602) and the compression spring (603) are symmetrically arranged; the limiting rod (602) passes through the bottom end of the clamping strip (601), and the limiting rod (602) is movably connected to the clamping strip (601); the compression spring (603) is respectively located at both ends of the limiting rod (602), and one end of the compression spring (603) is fixedly connected to one side of the limiting rod (602).

6. The oxygen concentration detection device for coal mine safety according to claim 5, characterized in that: The clamping mechanism (6) further comprises a wedge block (604) and a push block (605). The wedge blocks (604) are divided into two groups, and each group of wedge blocks (604) is symmetrically arranged. The wedge blocks (604) are respectively fixedly connected to the two ends of the limiting rod (602). The opposite sides of the wedge blocks (604) are both constructed with inclined surfaces. The push block (605) is T-shaped. The end of the push block (605) is in contact with the inclined surface of the wedge block (604), and the other end of the push block (605) extends to the outside of the housing (1).

7. The oxygen concentration detection device for coal mine safety according to claim 6, characterized in that: A group of symmetrical slide grooves (8) are provided at the top of the shell (1), the bottom end of the clamping strip (601) is movably connected to the inside of the slide groove (8), the limiting rod (602) is movably connected to the inside of the top of the shell (1), and the pushing block (605) is movably connected to the inside of the top of the shell (1).

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