Coal mine detection gas detector convenient for probe position adjustment

Abstract

The utility model discloses a coal mine detection gas detector convenient for probe position adjustment, and relates to the technical field of coal mine production, a lifting block is movably arranged in a lifting groove formed in the left side wall of a main machine body, a lifting limiting mechanism is arranged on the lifting block, and a lifting rod is rotationally arranged at the upper part of the lifting block through a thrust ball bearing; the upper end of the lifting rod penetrates through the lifting groove and then is rotationally provided with a rotating rod in a penetrating mode through a bearing, the end of the rotating rod is fixedly connected with the supporting rod, the lifting rod is movably sleeved with the first control ring, and first springs are fixedly arranged in a plurality of grooves formed in the inner bottom wall of the rotating groove. A plurality of limiting grooves matched with the limiting blocks are formed in the bottom of the first control ring, and a plurality of guide strips are distributed on the inner ring wall of the first control ring at equal fillets, so that the position of the probe can be quickly adjusted by one hand, the probe can be firmly locked after being adjusted, the detection efficiency and safety are remarkably improved, and the device adapts to the complex underground environment.

Description

Technical Field

[0001] This utility model relates to the field of coal mine production technology, specifically to a gas detector for coal mine testing that facilitates probe position adjustment. Background Technology

[0002] Gas is one of the major threats to coal mine safety. Portable gas detectors are essential safety equipment carried daily by underground workers to detect gas concentrations in the working environment. Existing portable gas detectors for coal mines mostly use fixed probes or simple adjustable rod structures, which have significant shortcomings in actual underground testing. First, adjusting the probe position requires two-hand operation or frequent movement of the main unit, making it difficult to quickly align the detection point in narrow and complex environments. Second, the extension rod lacks rigidity and is prone to loosening after locking, affecting measurement stability. Especially in situations requiring single-handed support or climbing, operation is inconvenient and poses safety hazards. Therefore, there is an urgent need for a gas detector for coal mines that facilitates probe position adjustment. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a reasonably designed gas detector for coal mines that facilitates probe position adjustment, thereby solving the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a main body, a support rod, and a probe. A storage groove is provided on the upper part of the main body, and a support rod is abutted in the storage groove. A probe is fixedly installed at one end of the support rod.

[0005] It also includes:

[0006] The lifting block is movably installed in a lifting groove on the left side wall of the main body. The lifting block is equipped with a lifting limit mechanism. A lifting rod is rotatably installed on the upper part of the lifting block through a thrust ball bearing. The upper end of the lifting rod passes through the lifting groove and is rotatably installed through the bearing. The end of the rotating rod is fixedly connected to the support rod.

[0007] The first control ring is movably sleeved on the lifting rod, and the first control ring is rotatably set in the rotating groove opened on the left side wall of the main body through the thrust ball bearing. The first spring is fixedly installed in several grooves opened on the bottom wall of the rotating groove. The lifting rod is equipped with a pitch adjustment mechanism connected to the rotating rod.

[0008] The limiting blocks are of several types and are fixedly installed on the upper ends of several No. 1 springs. The bottom of the No. 1 control ring is provided with several limiting grooves that cooperate with the limiting blocks. Several guide strips are distributed with equal rounded corners on the inner ring wall of the No. 1 control ring, and the guide strips are movably installed in the strip grooves opened on the lifting rod.

[0009] Furthermore, the lifting and limiting mechanism includes:

[0010] The control board is movably installed inside the lifting block. Two No. 2 springs connected to the control board are fixedly installed inside the lifting block. A pressing block is movably inserted on the left side of the lifting block, and one end of the pressing block is fixedly connected to the control board.

[0011] The linkage block consists of two blocks, which are respectively located on the front and rear sides of the lifting block. The linkage block is fixedly connected to the side wall of the control panel. Several limiting teeth are fixedly installed on the left side wall of the linkage block. Several tooth grooves are opened on both the front and rear sides of the left side wall of the lifting groove. The limiting teeth and tooth grooves are engaged and locked together.

[0012] Furthermore, two guide rods are fixedly installed inside the lifting block, and the second spring and the control plate are movably sleeved on the guide rods.

[0013] Furthermore, the pitch adjustment mechanism includes:

[0014] A worm gear is fixedly sleeved on a rotating rod. A worm is rotatably installed inside the lifting rod via a bearing. The worm meshes with the worm gear. A bevel gear is fixedly sleeved at the lower end of the worm.

[0015] The second control ring is rotatably mounted on the lifting rod via a bearing. An inner bevel gear ring that meshes with a bevel gear is fixedly installed inside the second control ring, and the inner bevel gear ring is movably installed in a groove on the lifting rod.

[0016] Furthermore, a handle is hinged to the left side of the front sidewall of the main body, and abutment blocks are fixedly installed on the upper and lower sides of the front sidewall of the main body at the left side of the handle, and the abutment blocks are movable to abut against the handle.

[0017] Furthermore, a first magnet strip is fixedly installed in a groove on the front side wall of the main body, and a second magnet strip is fixedly installed on the handle to cooperate with and resist the first magnet strip.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the gas detector for coal mine detection described in this utility model, which facilitates the adjustment of the probe position, can realize the rapid, one-handed adjustment of the probe position and can be firmly locked after adjustment, significantly improving detection efficiency and safety, and adapting to the complex underground environment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of the lifting groove in this utility model.

[0021] Figure 3This is a schematic diagram of the structure of the No. 1 control ring in this utility model.

[0022] Figure 4 This is an exploded view of the parts of this utility model.

[0023] Figure 5 yes Figure 4 Enlarged view of part A in the image.

[0024] Figure 6 yes Figure 4 Enlarged view of part B in the image.

[0025] Explanation of reference numerals in the attached figures:

[0026] Main body 1, support rod 2, probe 3, lifting block 4, lifting groove 5, lifting limit mechanism 6, control board 6-1, second spring 6-2, pressing block 6-3, linkage block 6-4, limit tooth 6-5, lifting rod 7, rotating rod 8, first control ring 9, rotating groove 10, groove 11, first spring 12, pitch adjustment mechanism 13, worm gear 13-1, worm 13-2, bevel gear 13-3, second control ring 13-4, inner bevel gear ring 13-5, limit block 14, limit groove 15, guide strip 16, strip groove 17, tooth groove 18, guide rod 19, ring groove 20, grip 21, contact block 22, first magnet strip 23, second magnet strip 24. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] like Figures 1-6 As shown, this specific embodiment adopts the following technical solution: It includes a main body 1, a support rod 2, and a probe 3. A storage slot is provided on the upper part of the main body 1, and the support rod 2 is abutted within the storage slot. A probe 3 is fixedly mounted on one end of the support rod 2. A handle 21 is hinged to the left side of the front wall of the main body 1. Abutment blocks 22 are fixedly mounted on both the upper and lower sides of the left side of the handle 21 on the front wall of the main body 1, and the abutment blocks 22 are movably abutted against the handle 21. The handle 21 facilitates the operation of the device. The handle 21 can be picked up by the operator, and the contact between the handle 21 and the contact block 22 can also restrict the flipping of the handle 21. A first magnet strip 23 is fixedly installed in the groove opened on the front side wall of the main body 1. A second magnet strip 24 is fixedly installed on the handle 21 to cooperate with the first magnet strip 23 to attract and resist it. Under the restriction state of the detector, the handle 21 can be flipped and the first magnet strip 23 and the second magnet strip 24 can cooperate to limit the flipped handle 21, reducing the space required for the detector to be stored.

[0029] It also includes:

[0030] The lifting block 4 is movably installed in the lifting groove 5 opened on the left side wall of the main body 1. The lifting block 4 is provided with a lifting limit mechanism 6. The upper part of the lifting block 4 is rotatably provided with a lifting rod 7 through a thrust ball bearing. The upper end of the lifting rod 7 passes through the lifting groove 5 and then rotatably passes through a rotating rod 8 through the bearing. The end of the rotating rod 8 is fixedly connected to the support rod 2.

[0031] The first control ring 9 is movably sleeved on the lifting rod 7, and the first control ring 9 is rotatably set in the rotating groove 10 opened on the left side wall of the main body 1 through the thrust ball bearing. The first spring 12 is fixedly installed in several grooves 11 opened on the bottom wall of the rotating groove 10. The lifting rod 7 is provided with a pitch adjustment mechanism 13 connected to the rotating rod 8.

[0032] The limiting block 14, there are several limiting blocks 14, which are fixedly installed on the upper end of several No. 1 springs 12 respectively. The bottom of the No. 1 control ring 9 is provided with several limiting grooves 15 that cooperate with the limiting blocks 14. Several guide strips 16 are distributed with equal rounded corners on the inner ring wall of the No. 1 control ring 9, and the guide strips 16 are movably installed in the strip grooves 17 opened on the lifting rod 7.

[0033] The lifting and limiting mechanism 6 includes:

[0034] The control plate 6-1 is movably disposed within the lifting block 4. Two second springs 6-2 connected to the control plate 6-1 are fixedly disposed within the lifting block 4. A pressing block 6-3 is movably inserted into the left side of the lifting block 4, with one end of the pressing block 6-3 fixedly connected to the control plate 6-1. Two guide rods 19 are fixedly disposed within the lifting block 4. The second springs 6-2 and the control plate 6-1 are movably sleeved on the guide rods 19. The guide rods 19 not only provide auxiliary guidance for the movement of the control plate 6-1 within the lifting block 4, effectively improving the movement stability of the control plate 6-1, but also prevent the second springs 6-2 from bending during compression, thus affecting their service life.

[0035] Linkage block 6-4, there are two linkage blocks 6-4, respectively located on the front and rear sides of lifting block 4, and linkage block 6-4 is fixedly connected to the side wall of control plate 6-1. Several limiting teeth 6-5 are fixedly installed on the left side wall of linkage block 6-4. Several tooth grooves 18 are opened on the front and rear sides of the left side wall of lifting groove 5. The limiting teeth 6-5 and tooth grooves 18 are engaged and locked. Through the cooperation of lifting limiting mechanism 6, after adjusting the height of lifting rod 7, support rod 2 and probe 3, the height position of lifting block 4 can be limited, so as to prevent lifting block 4, lifting rod 7 and support rod 2 from moving downward due to their own weight, etc., so as to ensure the height position of probe 3.

[0036] The pitch adjustment mechanism 13 includes:

[0037] Worm gear 13-1 is fixedly sleeved on rotating rod 8. Worm 13-2 is rotatably installed in lifting rod 7 through bearing. Worm 13-2 meshes with worm gear 13-1. Bevel gear 13-3 is fixedly sleeved on the lower end of worm 13-2.

[0038] The second control ring 13-4 is rotatably mounted on the lifting rod 7 via a bearing. An inner bevel gear ring 13-5 that meshes with the bevel gear 13-3 is fixedly installed inside the second control ring 13-4. The inner bevel gear ring 13-5 is movably installed in the annular groove 20 opened on the lifting rod 7. With the cooperation of the pitch adjustment mechanism 13, the tilt angle of the support rod 2 can be adjusted, and the pitch angle of the probe 3 can be adjusted according to the usage requirements. Furthermore, the self-locking characteristics of the worm gear 13-1 and the worm 13-2 can also prevent the rotating rod 8 from rotating due to the gravity of the support rod 2 and the probe 3.

[0039] When using this invention, hold the main body 1 or handle 21 with your hand, and then press the pressing block 6-3 to the right with your thumb. The pressing block 6-3 drives the control plate 6-1 to move to the right and compresses the second spring 6-2. The control plate 6-1 drives the linkage block 6-4 to move to the right, causing the limiting tooth 6-5 to disengage from the tooth groove 18. Then, you can push the pressing block 6-3 upward, causing the lifting block 4 to drive the lifting rod 7 upward. The lifting rod 7 drives the support rod 2 upward through the rotating rod 8, causing the support rod 2 to move the probe 3 upward from the storage groove, thus adjusting the height of the probe 3. Then, release the pressing block 6-3, causing the second spring 6-2 to return to its original position and extend, moving the control plate 6-1 to the left. The control plate 6-1 drives the limiting tooth 6-5 to move to the left through the linkage block 6-4, thus limiting the movement of the probe 3. The tooth 6-5 is engaged in the corresponding tooth groove 18. Then, the first control ring 9 can be rotated with the thumb. The first control ring 9 drives the lifting rod 7 to rotate through the guide bar 16. The lifting rod 7 drives the support rod 2 to rotate horizontally, adjusting the orientation of the probe 3. With the cooperation of the first spring 12, the limit block 14 and the limit groove 15, the rotation of the first control ring 9 can be self-locked. After that, the second control ring 13-4 can be rotated with the thumb. The second control ring 13-4 drives the inner bevel gear ring 13-5 to rotate. With the meshing of the inner bevel gear ring 13-5 and the bevel gear 13-3, the worm 13-2 can be rotated. The worm 13-2 drives the worm wheel 13-1 to rotate. The worm wheel 13-1 drives the rotating rod 8 to rotate. The rotating rod 8 drives the support rod 2 to flip vertically, adjusting the pitch angle of the probe 3.

[0040] Compared with the prior art, the beneficial effects of this utility model are:

[0041] The lifting limit mechanism 6, controlled by the linkage of the pressing block 6-3, together with the first control ring 9 and the second control ring 13-4 operated by the thumb rotation, can realize the one-handed quick adjustment of the height, horizontal angle and pitch angle of the probe 3. It is especially suitable for complex working conditions in the well where one hand is required to support, and significantly improves the convenience of operation and the safety of operation.

[0042] The probe 3 can be fully embedded in the storage slot of the main body 1. With the magnetic fixing design of the handle 21, the overall size can be greatly reduced, making it easy to carry and store. It also prevents exposed parts from being bumped and damaged during movement, thus extending the service life of the device.

[0043] The guide rod 19 not only provides auxiliary guidance for the movement of the control board 6-1 within the lifting block 4, effectively improving the stability of the movement of the control board 6-1, but also prevents the second spring 6-2 from bending during compression, thus affecting its service life.

[0044] The grip 21 makes it easier for staff to pick up the item, thus improving the convenience of one-handed operation.

[0045] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gas detector for coal mine testing that is easy to adjust the position of the probe, comprising a main body (1), a support rod (2) and a probe (3), wherein a storage groove is provided on the upper part of the main body (1), and a support rod (2) is provided in the storage groove, and a probe (3) is fixedly provided at one end of the support rod (2). characterized in that It also includes: The lifting block (4) is movably installed in the lifting groove (5) opened on the left side wall of the main body (1). The lifting block (4) is provided with a lifting limit mechanism (6). The upper part of the lifting block (4) is rotatably provided with a lifting rod (7) through a thrust ball bearing. The upper end of the lifting rod (7) passes through the lifting groove (5) and then rotatably passes through a rotating rod (8) through the bearing. The end of the rotating rod (8) is fixedly connected to the support rod (2). The first control ring (9) is movably sleeved on the lifting rod (7), and the first control ring (9) is rotatably set in the rotating groove (10) opened on the left side wall of the main body (1) through the thrust ball bearing. The first spring (12) is fixedly installed in several grooves (11) opened on the bottom wall of the rotating groove (10). The lifting rod (7) is provided with a pitch adjustment mechanism (13) connected to the rotating rod (8). The limiting block (14) consists of several blocks, which are fixedly installed on the upper ends of several No. 1 springs (12). The bottom of the No. 1 control ring (9) is provided with several limiting grooves (15) that cooperate with the limiting block (14). Several guide strips (16) are distributed with equal rounded corners on the inner ring wall of the No. 1 control ring (9), and the guide strips (16) are movably installed in the strip groove (17) opened on the lifting rod (7).

2. The gas detector for coal mine detection with the probe position adjustment facilitated according to claim 1, characterized in that: The lifting and limiting mechanism (6) includes: The control board (6-1) is movably installed inside the lifting block (4). Two No. 2 springs (6-2) connected to the control board (6-1) are fixedly installed inside the lifting block (4). A pressing block (6-3) is movably inserted on the left side of the lifting block (4). One end of the pressing block (6-3) is fixedly connected to the control board (6-1). Linkage block (6-4), there are two linkage blocks (6-4), which are respectively located on the front and rear sides of the lifting block (4), and the linkage block (6-4) is fixedly connected to the side wall of the control plate (6-1). Several limiting teeth (6-5) are fixedly provided on the left side wall of the linkage block (6-4). Several tooth grooves (18) are opened on the front and rear sides of the left side wall of the lifting groove (5). The limiting teeth (6-5) and the tooth grooves (18) are engaged and locked.

3. The gas detector for coal mine detection with the probe position adjustment facilitated according to claim 2, characterized in that: The lifting block (4) is fixedly provided with two guide rods (19), and the second spring (6-2) and the control plate (6-1) are movably sleeved on the guide rods (19).

4. The gas detector for coal mine detection with the probe position adjustment facilitated according to claim 1, characterized in that: The pitch adjustment mechanism (13) includes: A worm gear (13-1) is fixedly sleeved on a rotating rod (8). A worm (13-2) is rotatably installed inside a lifting rod (7) via a bearing. The worm (13-2) meshes with the worm gear (13-1). A bevel gear (13-3) is fixedly sleeved at the lower end of the worm (13-2). The second control ring (13-4) is rotatably mounted on the lifting rod (7) via a bearing. An inner bevel gear ring (13-5) that meshes with the bevel gear (13-3) is fixedly installed inside the second control ring (13-4), and the inner bevel gear ring (13-5) is movably installed in the ring groove (20) opened on the lifting rod (7).

5. The gas detector for coal mine detection with the probe position adjustment facilitated according to claim 1, characterized in that: A handle (21) is hinged to the left side of the front wall of the main body (1). Abutment blocks (22) are fixedly installed on the upper and lower sides of the front wall of the main body (1) on the left side of the handle (21), and the abutment blocks (22) are in contact with the handle (21).

6. The gas detector for coal mine detection with the probe position adjustment facilitated according to claim 5, characterized in that: A first magnet strip (23) is fixedly installed in a groove on the front side wall of the main body (1), and a second magnet strip (24) is fixedly installed on the handle (21) to cooperate with and adhere to the first magnet strip (23).

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