Combustible gas detector with laser detection and wireless remote transmission functions

Abstract

The utility model provides a combustible gas detector with laser detection and wireless remote transmission functions, which comprises a combustible gas detector main body and a laser sensor fixedly arranged on the combustible gas detector main body. According to the combustible gas detector, the clamping block I limits the clamping frame, so that when the combustible gas detector main body is better fixedly mounted and dismounted, the combustible gas detector main body is firstly pressed, and then the pushing arc rod is pressed to drive the clamping block I to move outwards, so that the dismounting of the combustible gas detector main body is better completed; the combustible gas detector is convenient and fast to mount and dismount, so that the combustible gas detector is convenient to overhaul, gas detection is performed through the laser sensor, the laser detection technology is not influenced by environmental factors, accurate detection of gas concentration can be realized, the false alarm phenomenon is reduced, and the safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas detection technical field especially, it relates to a combustible gas detector with laser detection and wireless remote function. BACKGROUND

[0002] Gas detection refers to the process of detecting and analyzing gas components in air, water, or other media through specific sensors or instruments. This process involves the identification of gas components, concentration measurement, and monitoring of change trends, aiming to obtain accurate information about gas components and concentrations. Combustible gas detectors are safety devices used to monitor the concentration of combustible gases in the environment.

[0003] Traditional combustible gas detectors rely mainly on chemical sensors, which are usually slow to respond and sensitive to environmental interference, making it difficult to meet real-time monitoring needs in complex use scenarios. In addition, when installing and fixing traditional combustible gas detectors, they are usually fixed by fixing screws. This fixing method requires the use of professional tools such as screwdrivers when disassembling, making it inconvenient to disassemble and maintain the combustible gas detector. Therefore, how to make the installation and disassembly of the combustible gas detector more convenient and avoid the influence of environmental factors on the combustible gas detector is an important problem that needs to be solved in the design of combustible gas detectors with laser detection and wireless remote function. SUMMARY

[0004] The utility model discloses in order to solve combustible gas detector to environmental interference sensitive and combustible gas detector's disassembly not enough convenient problem, and provide a combustible gas detector with laser detection and wireless remote function.

[0005] The utility model solves the above-mentioned technical problem through the following technical scheme:

[0006] The utility model provides a combustible gas detector with laser detection and wireless remote function, including combustible gas detector main part, still include:

[0007] Laser sensor, laser sensor fixedly arranged on combustible gas detector main part,

[0008] Acousto-optic alarm, acousto-optic alarm fixedly arranged on combustible gas detector main part,

[0009] Connecting structure, connecting structure sets up at the bottom of combustible gas detector main part,

[0010] Mounting shell, mounting shell is located below combustible gas detector main part,

[0011] The clamping structure is arranged on the mounting shell, and the clamping structure clamps the connecting structure in the mounting shell.

[0012] Preferably, the combustible gas detector body comprises a shell upper cover, a shell base, a display screen panel, a display control panel, a power supply mainboard, a main control panel, a sealing ring and a wireless transmission antenna, the sealing ring is sleeved on the shell base, the shell upper cover is threadedly connected on the shell base, the sealing ring is located between the shell upper cover and the shell base, and the display screen panel, the display control panel, the power supply mainboard, the main control panel and the wireless transmission antenna are located inside the shell upper cover and the shell base.

[0013] In the technical solution, the detection result is converted through the signal analog-to-digital on the main control panel, and the converted signal is analyzed and processed, and the analyzed and processed data is transmitted to the display control panel, and the display control panel displays the current detection concentration in real time through the display screen panel.

[0014] Preferably, the main control panel and the power supply mainboard are fixedly connected in the interior of the shell base through the hexagonal mounting column two, the power supply mainboard is located above the main control panel, the wireless transmission antenna is fixedly arranged on the top of the power supply mainboard, the display control panel is fixedly connected on the top of the hexagonal mounting column two through the hexagonal mounting column one, the display screen panel is fixedly connected on the top of the hexagonal mounting column one through the self-tapping screw, and the power supply interface is fixedly arranged on the side wall of the shell base.

[0015] Preferably, the laser sensor and the sound-light alarm are electrically connected with the main control panel, and the positions of the laser sensor, the sound-light alarm and the power supply interface are equidistantly distributed on the side wall of the shell base.

[0016] In the technical solution, the gas in the air is detected through the laser sensor, and when the gas concentration exceeds the set threshold value, the main control panel controls the sound-light alarm to be triggered immediately.

[0017] Preferably, the connecting structure comprises a fixed plate, a clamping frame and a clamping block two, the fixed plate is fixedly connected on the bottom side wall of the shell base, two L-shaped clamping frames are fixedly connected on the bottom side wall of the fixed plate, and the clamping block two is fixedly connected on the top side wall of the two clamping frames.

[0018] Preferably, three mounting blocks are equidistantly fixedly connected on the side wall of the mounting shell, and a sliding groove two is arranged on the side wall of the mounting shell.

[0019] In the technical solution, the mounting shell is fixedly connected at the selected position through the fixing bolt penetrating through the mounting hole on the mounting block.

[0020] Preferably, the bottom of the mounting shell is fixedly connected with a spring three, and the top of the spring three is fixedly connected with a support plate.

[0021] In the technical scheme, the support plate and the spring three elastically support the combustible gas detector main body.

[0022] Preferably, the clamping structure comprises a clamping block one, a sliding groove one, a spring one and a clamping groove, the side wall of the clamping block one is provided with the sliding groove one, the clamping block one is slidably connected in the sliding groove two, the sliding groove one is fixedly connected with the spring one at equal intervals, the other end of the spring one is fixedly connected with the inner side wall of the mounting shell, the side wall of the end of the clamping block one is obliquely arranged, and the bottom side wall of the clamping block one is provided with the clamping groove.

[0023] In the technical scheme, the clamping frame at the bottom of the combustible gas detector main body is put into the mounting shell and pushed inwards, the movement of the clamping frame pushes the clamping blocks one on both sides to move outwards, the spring one is compressed, and with the pushing, the support plate is also pushed, and the spring three is also compressed. When the support plate abuts against the bottom inner side wall of the mounting shell, the cross rod of the clamping frame and the clamping block two are located below the clamping block one, the clamping block one is no longer pushed, the compressed spring one expands to push the clamping block one to return to the original position. At this time, the end of the clamping block one abuts against the vertical rod of the clamping frame, the combustible gas detector main body is loosened, the compressed spring three expands to push the support plate to move upwards, the support plate pushes the clamping frame to move upwards, and the clamping frame drives the combustible gas detector main body and the clamping block two to move upwards, so that the clamping block two is clamped into the clamping groove.

[0024] Preferably, the clamping groove and the clamping block two are matched with each other.

[0025] In the technical scheme, the clamping block two is clamped into the clamping groove, so that the movement of the clamping block one is limited by the clamping block two, the clamping block one is prevented from moving outwards, the clamping frame is limited by the clamping block one, the clamping frame is prevented from separating from the mounting shell, the combustible gas detector main body is fixedly connected to the mounting shell, and the combustible gas detector main body is better fixed and installed.

[0026] Preferably, the clamping structure comprises a connecting rod, a pushing arc rod, a spring two and an extension rod, the spring two and the extension rod are fixedly connected to the side wall of the mounting shell, the spring two is sleeved outside the extension rod, the other end of the spring two and the extension rod is fixedly connected with the pushing arc rod, the two ends of the pushing arc rod are rotatably connected with two connecting rods, and the other ends of the two connecting rods are rotatably connected to the side wall of the clamping block.

[0027] In the technical solution, the pressing pushing arc rod is compressed, the spring II and the telescopic rod are compressed, the pushing arc rod pushes the connecting rods on both sides, the connecting rods pull the clamping block I to move outward, the clamping block I no longer limits the clamping frame, the clamping frame is better taken out from the installation shell, and the combustible gas detector main body is better disassembled.

[0028] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred examples of the utility model are obtained.

[0029] The positive progress effect of the utility model lies in:

[0030] 1. The clamping block II is clamped into the clamping groove by putting the clamping frame into the installation shell and pushing inward, the clamping block II limits the movement of the clamping block I, avoids the outward movement of the clamping block I, the clamping block I limits the clamping frame, avoids the disengagement of the clamping frame from the installation shell, the combustible gas detector main body is better fixed and installed, when disassembling, the combustible gas detector main body is pressed first, the clamping block II is disengaged from the clamping groove, the clamping block I is moved outward by pressing the pushing arc rod, the clamping block I no longer limits the clamping frame, and the combustible gas detector main body is better disassembled, so that the installation and disassembly of the combustible gas detector are more convenient and fast, and the maintenance of the combustible gas detector is more convenient.

[0031] 2. The gas is detected through the laser sensor, the laser detection technology is not affected by environmental factors, the precise detection of the gas concentration can be realized, the false alarm phenomenon is reduced, and the safety is improved.

[0032] 3. The instant feedback capability of the laser sensor ensures that the slight leakage of the combustible gas can be identified in time.

[0033] 4. The application transmits data through the wireless transmission antenna, uses wireless technology to improve the stability of data transmission, and ensures timely updating and feedback of information.

[0034] 5. Through data collection and analysis, real-time safety monitoring and online management functions are provided for users, and the flexibility and efficiency of monitoring are improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a whole three-dimensional structure schematic diagram of the utility model.

[0036] Figure 2 It is a whole internal split three-dimensional structure schematic diagram of the utility model.

[0037] Figure 3 It is an installation shell internal structure schematic diagram of the utility model.

[0038] Figure 4The utility model discloses an installation shell overhead internal structure schematic diagram.

[0039] Figure 5 The utility model discloses a connecting structure three-dimensional structure schematic diagram.

[0040] Mark explanation

[0041] 1, combustible gas detector main part;101, shell upper cover;102, shell base;103, display screen panel;104, display control panel;105, power mainboard;106, main control panel;107, sealing ring;108, wireless transmission antenna;111, self -tapping screw;112, hexagonal mounting column one;113, hexagonal mounting column two;2, laser sensor;3, audible -visual alarm;4, installation shell;5, clamping structure;501, clamping block one;502, sliding groove one;503, spring one;504, clamping groove;511, connecting rod;512, push arc rod;513, spring two;514, telescopic rod;6, mounting block;7, power interface;8, connecting structure;801, fixed plate;802, clamping frame;803, clamping block two;9, sliding groove two;10, support plate;11, spring three. Specific implementation

[0042] The utility model is further explained below by way of example, but will not therefore limit the utility model in the range of the described embodiment.

[0043] As Figures 1-5 Indicated, a kind of with laser detection and wireless remote transmission function's combustible gas detector, including combustible gas detector main part 1, still include:

[0044] Laser sensor 2, the laser sensor 2 is fixedly arranged on combustible gas detector main part 1;

[0045] Audible -visual alarm 3, the audible -visual alarm 3 is fixedly arranged on combustible gas detector main part 1;

[0046] Connecting structure 8, the connecting structure 8 is arranged at the bottom of combustible gas detector main part 1;

[0047] Installation shell 4, the installation shell 4 is located below combustible gas detector main part 1;

[0048] Clamping structure 5, the clamping structure 5 is arranged on installation shell 4, the clamping structure 5 is clamped and limited in installation shell 4 by connecting structure 8.

[0049] The combustible gas detector body 1 includes a shell upper cover 101, a shell base 102, a display screen panel 103, a display control board 104, a power supply main board 105, a main control board 106, a sealing ring 107 and a wireless transmission antenna 108, the sealing ring 107 is sleeved on the shell base 102, the shell upper cover 101 is threadedly connected on the shell base 102, the sealing ring 107 is located between the shell upper cover 101 and the shell base 102, the display screen panel 103, the display control board 104, the power supply main board 105, the main control board 106 and the wireless transmission antenna 108 are located inside the shell upper cover and the shell base 102.

[0050] The detection result is converted by the signal analog-digital on the main control board 106, and the converted signal is analyzed and processed, and the analyzed and processed data is transmitted to the display control board 104, and the display control board 104 displays the current detection concentration in real time through the display screen panel 103.

[0051] The main control board 106 and the power supply main board 105 are fixedly connected in the inside of the shell base 102 through the hexagonal mounting column two 113, the power supply main board 105 is located above the main control board 106, the wireless transmission antenna 108 is fixedly arranged on the top of the power supply main board 105, the display control board 104 is fixedly connected on the top of the hexagonal mounting column two 113 through the hexagonal mounting column one 112, the display screen panel 103 is fixedly connected on the top of the hexagonal mounting column one 112 through the self-tapping screw 111, and the power supply interface 7 is fixedly arranged on the side wall of the shell base 102.

[0052] The laser sensor 2 and the sound-light alarm 3 are electrically connected with the main control board 106, and the positions of the laser sensor 2, the sound-light alarm 3 and the power supply interface 7 are equidistantly distributed on the side wall of the shell base 102.

[0053] The gas in the air is detected by the laser sensor 2, when the gas concentration exceeds the set threshold value, the main control board 106 immediately controls the sound-light alarm 3 to be triggered.

[0054] The connecting structure 8 includes a fixed plate 801, a clamping frame 802 and a clamping block two 803, the fixed plate 801 is fixedly connected on the bottom side wall of the shell base 102, two “L” type clamping frames 802 are fixedly connected on the bottom side wall of the fixed plate 801, and the clamping block two 803 is fixedly connected on the top side wall of the two clamping frames 802.

[0055] Three mounting blocks 6 are equidistantly fixedly connected on the side wall of the mounting shell 4, and a sliding groove two 9 is formed in the side wall of the mounting shell 4.

[0056] The mounting shell 4 is fixedly connected at the selected position by passing through the mounting hole on the mounting block 6 through the fixing bolt.

[0057] The spring three 11 is fixedly connected on the inner side wall of the bottom of the mounting shell 4, the top of the spring three 11 is fixedly connected with the support plate 10, and the support plate 10 is slidingly connected on the inner side wall of the mounting shell 4.

[0058] The support plate 10 and the spring three 11 elastically support the combustible gas detector main body 1.

[0059] The clamping structure 5 comprises a clamping block one 501, a sliding groove one 502, a spring one 503 and a clamping groove 504, the sliding groove one 502 is arranged on the side wall of the clamping block one 501, the clamping block one 501 is slidingly connected in the sliding groove two 9, the spring one 503 is fixedly connected in the sliding groove one 502 at equal intervals, the other end of the spring one 503 is fixedly connected on the inner side wall of the mounting shell 4, the side wall of the end of the clamping block one 501 is arranged in an inclined manner, and the clamping groove 504 is arranged on the bottom side wall of the clamping block one 501.

[0060] The clamping frame 802 at the bottom of the combustible gas detector main body 1 is put into the mounting shell 4 and pushed inwards, the movement of the clamping frame 802 pushes the clamping block one 501 on both sides to move outward, the spring one 503 is compressed, with the pushing, the support plate 10 is also pushed, the spring three 11 is also compressed, when the support plate 10 abuts against the bottom inner side wall of the mounting shell 4, the cross rod of the clamping frame 802 and the clamping block two 803 are located below the clamping block one 501, the clamping block one 501 is no longer pushed, the compressed spring one 503 expands to push the clamping block one 501 to return to the original position, at this time, the end of the clamping block one 501 abuts against the vertical rod of the clamping frame 802, when the combustible gas detector main body 1 is released, the compressed spring three 11 expands to push the support plate 10 to move upward, the support plate 10 pushes the clamping frame 802 to move upward, the clamping frame 802 drives the combustible gas detector main body 1 and the clamping block two 803 to move upward, so that the clamping block two 803 is clamped into the clamping groove 504.

[0061] The clamping groove 504 and the clamping block two 803 cooperate with each other.

[0062] The clamping block two 803 is clamped into the clamping groove 504, so that the clamping block two 803 limits the movement of the clamping block one 501, avoiding the outward movement of the clamping block one 501, the clamping block one 501 limits the clamping frame 802, avoiding the disengagement of the clamping frame 802 from the mounting shell 4, so that the combustible gas detector main body 1 is fixedly connected on the mounting shell 4, thereby better fixing and installing the combustible gas detector main body 1.

[0063] The clamping structure 5 comprises a connecting rod 511, a pushing arc rod 512, a spring 513 and a telescopic rod 514, the spring 513 and the telescopic rod 514 are fixedly connected on the side wall of the mounting shell 4, the spring 513 is sleeved on the outer side of the telescopic rod 514, the other end of the spring 513 and the telescopic rod 514 is fixedly connected with the pushing arc rod 512, both ends of the pushing arc rod 512 is rotatably connected with two connecting rods 511, the other end of the two connecting rods 511 is rotatably connected on the side wall of the clamping block.

[0064] The pushing arc rod 512 is pressed, the spring 513 and the telescopic rod 514 are compressed, the pushing arc rod 512 pushes the connecting rods 511 on both sides, the connecting rods 511 pull the clamping block 501 to move outward, so that the clamping block 501 no longer limits the clamping frame 802, so that the clamping frame 802 is better taken out from the mounting shell 4, thereby better completing the disassembly of the combustible gas detector main body 1.

[0065] In use, the electrical elements appearing in the application are all externally connected with power supply and control switch in use, when installing, the fixing bolt is passed through the mounting hole on the mounting block 6, the mounting shell 4 is fixedly connected at the selected position, then the clamping frame 802 at the bottom of the combustible gas detector main body 1 is put into the mounting shell 4 and is pushed inward, the movement of the clamping frame 802 pushes the clamping block 501 on both sides to move outward, the spring 503 is compressed, along with the pushing, the supporting plate 10 is also pressed, the spring 11 is also compressed, when the supporting plate 10 abuts against the bottom inner side wall of the mounting shell 4, the cross rod of the clamping frame 802 and the clamping block 803 are all below the clamping block 501, the clamping block 501 is no longer pushed, the compressed spring 503 expands and pushes the clamping block 501 to return to the original position;

[0066] At this time, the end of the clamping block 501 abuts against the vertical rod of the clamping frame 802, when the combustible gas detector main body 1 is loosened, the compressed spring 11 expands and pushes the supporting plate 10 to move upward, the supporting plate 10 pushes the clamping frame 802 to move upward, the clamping frame 802 drives the combustible gas detector main body 1 and the clamping block 803 to move upward, so that the clamping block 803 is clamped into the clamping groove 504, the clamping block 803 limits the movement of the clamping block 501, avoids the clamping block 501 from moving outward, the clamping block 501 limits the clamping frame 802, avoids the clamping frame 802 from separating from the mounting shell 4, so that the combustible gas detector main body 1 is fixedly connected on the mounting shell 4, thereby better fixing and installing the combustible gas detector main body 1.

[0067] When disassembling, first press the combustible gas detector main body 1, so that the clamping block two 803 is separated from the clamping groove 504, then press the push arc rod 512, the spring two 513 and the telescopic rod 514 are compressed, the push arc rod 512 pushes the connecting rod 511 on both sides, the connecting rod 511 pulls the clamping block one 501 to move outward, so that the clamping block one 501 no longer limits the clamping frame 802, so that the clamping frame 802 is better taken out from the installation shell 4, thereby better completing the disassembly of the combustible gas detector main body 1;

[0068] When the combustible gas detector main body 1 is powered on for the first time, the system is initialized, self-checking and calibration are carried out, the gas concentration threshold value is set again, the gas in the air is detected through the laser sensor 2, the detection result is converted into a signal through the signal analog on the main control panel 106, and the converted signal is analyzed and processed, the analyzed and processed data are transmitted to the display control panel 104, the display control panel 104 displays the current detection concentration in real time through the display screen panel 103, and once the gas concentration exceeds the set threshold value, the main control panel 106 immediately controls the trigger sound-light alarm, and at the same time, through the wireless transmission antenna 108, relevant data can be sent to the background management platform in real time for collection and management.

[0069] The utility model is not limited to the above-mentioned embodiment, no matter make any change in its shape or structure, all fall in the protection scope of the utility model. The protection scope of the utility model is defined by the appended claims, and the skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall into the protection scope of the utility model.

Claims

1. A combustible gas detector with laser detection and wireless remote transmission function, comprising a combustible gas detector main body (1), characterized in that, Also includes: Laser sensor (2), the laser sensor (2) is fixedly arranged on the combustible gas detector body (1); Acousto-optic alarm (3), the acousto-optic alarm (3) is fixedly arranged on the combustible gas detector body (1); Connecting structure (8), the connecting structure (8) is arranged at the bottom of the combustible gas detector body (1); Mounting shell (4), the mounting shell (4) is located below the combustible gas detector body (1); Clamping structure (5), the clamping structure (5) is arranged on the mounting shell (4), and the clamping structure (5) is clamped and limited in the mounting shell (4).

2. The combustible gas detector with laser detection and wireless remote transmission function according to claim 1, characterized in that: The combustible gas detector body (1) includes a shell upper cover (101), a shell base (102), a display screen panel (103), a display control panel (104), a power supply mainboard (105), a main control panel (106), a sealing ring (107) and a wireless transmission antenna (108), the sealing ring (107) is sleeved on the shell base (102), the shell upper cover (101) is threadedly connected on the shell base (102), the sealing ring (107) is located between the shell upper cover (101) and the shell base (102), and the display screen panel (103), the display control panel (104), the power supply mainboard (105), the main control panel (106) and the wireless transmission antenna (108) are located inside the shell upper cover and the shell base (102).

3. The combustible gas detector with laser detection and wireless remote transmission function according to claim 2, characterized in that: The main control panel (106) and the power supply mainboard (105) are fixedly connected inside the shell base (102) through the hexagonal mounting column two (113), the power supply mainboard (105) is located above the main control panel (106), the wireless transmission antenna (108) is fixedly arranged on the top of the power supply mainboard (105), the display control panel (104) is fixedly connected on the top of the hexagonal mounting column two (113) through the hexagonal mounting column one (112), the display screen panel (103) is fixedly connected on the top of the hexagonal mounting column one (112) through the self-tapping screw (111), and the power supply interface (7) is fixedly arranged on the side wall of the shell base (102).

4. The combustible gas detector with laser detection and wireless remote transmission function according to claim 1, characterized in that: The laser sensor (2) and the acousto-optic alarm (3) are electrically connected with the main control panel (106), and the positions of the laser sensor (2), the acousto-optic alarm (3) and the power supply interface (7) are equidistantly distributed on the side wall of the shell base (102).

5. The combustible gas detector with laser detection and wireless remote transmission function according to claim 1, characterized in that: The connecting structure (8) includes a fixed plate (801), a clamping frame (802) and a clamping block two (803), the fixed plate (801) is fixedly connected on the bottom side wall of the shell base (102), two "L" type clamping frames (802) are fixedly connected on the bottom side wall of the fixed plate (801), and the clamping block two (803) is fixedly connected on the top side wall of the two clamping frames (802).

6. The combustible gas detector with laser detection and wireless remote transmission function according to claim 1, characterized in that: Three mounting blocks (6) are equidistantly fixedly connected on the side wall of the mounting shell (4), and a sliding groove two (9) is formed in the side wall of the mounting shell (4).

7. The combustible gas detector with laser detection and wireless remote transmission function according to claim 1, characterized in that: The bottom inner side wall of the mounting shell (4) is fixedly connected with spring three (11) at equal intervals, the top of the spring three (11) is fixedly connected with a support plate (10), and the support plate (10) is slidingly connected on the inner side wall of the mounting shell (4).

8. The combustible gas detector with laser detection and wireless remote transmission function according to claim 1, characterized in that: The clamping structure (5) comprises a clamping block one (501), a sliding groove one (502), a spring one (503) and a clamping groove (504), the sliding groove one (502) is formed in the side wall of the clamping block one (501), the clamping block one (501) is slidingly connected in the sliding groove two (9), the spring one (503) is fixedly connected in the sliding groove one (502) at equal intervals, the other end of the spring one (503) is fixedly connected on the inner side wall of the mounting shell (4), the side wall of the end of the clamping block one (501) is obliquely arranged, and the clamping groove (504) is formed in the bottom side wall of the clamping block one (501).

9. The combustible gas detector with laser detection and wireless remote transmission function according to claim 8, characterized in that: The clamping groove (504) and the clamping block two (803) are matched with each other.

10. The combustible gas detector with laser detection and wireless remote transmission function according to claim 1, characterized in that: The clamping structure (5) comprises a connecting rod (511), a pushing arc rod (512), a spring two (513) and a telescopic rod (514), the spring two (513) and the telescopic rod (514) are fixedly connected on the side wall of the mounting shell (4), the spring two (513) is sleeved on the outer side of the telescopic rod (514), the other end of the spring two (513) and the telescopic rod (514) is fixedly connected with the pushing arc rod (512), both ends of the pushing arc rod (512) are rotatably connected with two connecting rods (511), and the other end of the two connecting rods (511) is rotatably connected on the side wall of the clamping block.

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