A river channel measuring device

Abstract

The present invention discloses a river channel measuring device, including a depth marking component, an automatic triggering component, a retracting and extending adjustment mechanism, an L-shaped support frame and a button mounting frame. The present invention belongs to the technical field of river channel silt measurement. In order to solve the problem that the existing river channel measuring device is difficult to visually compare the silt depth and the water level, the present invention proposes a depth marking component and an automatic triggering component. This solution converts the problem of silt depth and water level that are difficult to visually observe in the river channel into the problem of observing the water depth indicator light and the silt depth indicator light on the L-shaped support frame, which is obviously more intuitive and convenient, and the water depth indicator light and the silt depth indicator light of the same size can proportionally indicate the silt depth and water level in the river channel, and the measurement result is accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of river channel silt measurement, and in particular relates to a river channel measurement device. Background Art

[0002] River and lake silt is unconsolidated soft fine or ultra-fine soil that is deposited in still water or slow-flowing water environments through physical, chemical and biochemical reactions. It contains high water content, heavy metals, organic matter and other pollutants. Random stacking will produce odor and will inevitably cause secondary pollution to the surrounding environment. It is a modern recent sediment.

[0003] At present, when using river channel silt depth measuring devices, most of them are manually inserted. On the one hand, the depth of the silt is difficult to visually see, and on the other hand, the depth of the silt is difficult to measure, and it is difficult to give an intuitive comparison and illustration of the measurement results. Therefore, it is necessary to propose a river channel measuring device. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a river channel measuring device, which effectively solves the problem that the existing river channel measuring device is difficult to intuitively compare the silt depth and water level height, and the measurement results are difficult to intuitively illustrate.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a river channel measuring device, including a depth marking component, an automatic triggering component, a retractable and extendable adjustment mechanism, an L-shaped support frame and a button mounting frame, the L-shaped support frame is installed on the river bank, the button mounting frame is fixedly connected to the L-shaped support frame, the retractable and extendable adjustment mechanism is arranged on the L-shaped support frame, the automatic triggering component is arranged on the retractable and extendable adjustment mechanism, the depth marking component is arranged on the automatic triggering component, and the L-shaped support frame is also provided with reinforcing ribs.

[0006] Preferably, the depth marking assembly includes a parallel plate capacitor, a limit cavity, an electrorheological fluid, a lifting guide column, a lifting guide groove, a falling weight, a sealing ring, an insertion measuring column, an internal touch button, a marking assembly housing, a sludge support platform and an external touch button. The marking assembly housing is arranged on the retractable adjustment mechanism, the lifting guide column is divided into two groups and fixedly connected to the inner wall of the marking assembly housing, the falling weight is slidably arranged on the lifting guide column, the limit cavity is arranged in the falling weight, the lifting guide groove is arranged in the falling weight, the falling weight is slidably arranged on the lifting guide column through the lifting guide groove, the parallel plate capacitor is embedded between the inner walls of the marking assembly housing, the sealing ring is arranged at the upper and lower ends of the limit cavity, the insertion measuring column is arranged at the bottom of the falling weight, the internal touch button array is arranged on the inner wall of the marking assembly housing, the sludge support platform is fixedly connected to the bottom of the marking assembly housing, the external touch button array is arranged on the button placement frame, the electrorheological fluid is filled in the limit cavity, and the falling weight contacts the internal touch button when moving.

[0007] Furthermore, the automatic triggering assembly includes an automatic triggering block, a T-shaped slide groove, a triggering button, a blocking groove, a sliding ejection groove, an ejection rod, an ejection spring, an ejection limiting plate and a blocking layer. The T-shaped slide groove is arranged at the bottom of the sludge support platform, the automatic triggering block is slidably arranged on the T-shaped slide groove, the triggering button is arranged on the inner wall of the T-shaped slide groove, the blocking groove is arranged on the side wall of the sludge support platform, the sliding ejection groove is arranged on the inner wall of the blocking groove, the ejection rod is slidably arranged on the sliding ejection groove, the ejection limiting plate is fixedly connected to one end of the ejection rod, the ejection spring is arranged between the ejection limiting plate and the sliding ejection groove, the blocking layer is arranged at the opening of the blocking groove, the ejection limiting plate is against the inner side of the blocking layer, the triggering button and the parallel plate capacitor are electrically connected, and the blocking layer is made of water-soluble paper.

[0008] Among them, the retractable and retractable adjustment mechanism includes a retractable and retractable belt, a retractable and retractable wheel 1, a retractable and retractable wheel 2, a sliding retractable and retractable platform and a sliding guide wheel. The retractable and retractable wheel 1 is arranged at the bending part of the L-shaped support frame, the retractable and retractable wheel 2 is arranged at one end of the L-shaped support frame, the sliding guide wheel is embedded and slidably arranged on the inner wall of the L-shaped support frame, the sliding retractable and retractable platform is arranged between the sliding guide wheels, one end of the retractable and retractable belt is arranged on the sliding retractable and retractable platform, and the other end of the retractable and retractable belt passes through the retractable and retractable wheel 2.

[0009] Preferably, a water depth indicator light is provided on the L-shaped support frame, and a mud depth indicator light is also provided on the L-shaped support frame. The external touch button and the water depth indicator light are electrically connected, and the internal touch button and the mud depth indicator light are electrically connected. The internal touch button, the external touch button and the trigger button are configured as waterproof buttons, and the internal touch button and the external touch button have the same size, and the water depth indicator light and the mud depth indicator light have the same size.

[0010] Preferably, the end of the retractable belt is connected to the top of the marking assembly housing.

[0011] Wherein, the limiting cavity and the lifting guide groove are communicated.

[0012] Furthermore, the sludge support platform is a cylindrical platform.

[0013] Furthermore, the parallel plate capacitors are arranged in pairs in parallel between the inner walls of the marking assembly housing.

[0014] Further, the probe column moves through the bottom of the marking assembly housing and the mud support platform.

[0015] Furthermore, the ejection limiting piece contacts the external touch button when moving.

[0016] Among them, the automatic trigger block is in a T shape.

[0017] The beneficial effects achieved by the present invention using the above structure are as follows: This solution provides a river channel measurement device, which effectively solves the problem that the existing river channel measurement device is difficult to visually compare the silt depth and the water level height, and the measurement results are difficult to visually illustrate. This method brings the following advantages:

[0018] (1) In order to solve the problem that it is difficult for existing river channel measuring devices to intuitively compare the silt depth and water level, the present invention proposes a depth marking component and an automatic triggering component to control the height of the marking component shell so that the silt support platform stably enters the river channel water surface. At this time, the plugging layer on the plugging groove dissolves when it encounters water, and the ejection limit plate contacts a plurality of groups of external touch buttons when it moves. The plurality of groups of external touch buttons correspond to a plurality of groups of water depth indicator lights one by one. When the marking component shell drives the silt support platform to continue to enter the river channel water, the synchronously moving ejection limit plate contacts a plurality of groups of external touch buttons and causes a plurality of groups of water depth indicator lights to light up. The more the number of lighted water depth indicator lights is, the greater the water depth is, and the river channel water depth is measured;

[0019] (2) During the movement of the probe measuring column, the falling weight also moves downward by the same distance. Therefore, the several groups of internal touch buttons that the falling weight passes through during the movement light up the corresponding several groups of silt depth indicator lights. The several groups of internal touch buttons correspond to the several groups of silt depth indicator lights one by one. The more silt depth indicator lights that light up, the greater the depth of the silt. By observing the number of lighted water depth indicator lights and silt depth indicator lights on the L-shaped support frame, the ratio of the water depth and silt depth of the river channel can be obtained. Since the water depth indicator lights and silt depth indicator lights are of the same size, the lighting conditions of the several groups of water depth indicator lights and silt depth indicator lights can provide an intuitive indication of the silt depth and water level.

[0020] (3) This solution converts the problem of silt depth and water level in the river channel, which are difficult to observe visually, into the problem of observing the water depth indicator light and silt depth indicator light on the L-shaped support frame. This is obviously more intuitive and convenient. The water depth indicator light and silt depth indicator light of the same size can indicate the silt depth and water level in the river channel in equal proportion, and the measurement result is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a river channel measuring device provided by the present invention;

[0022] Figure 2 A cross-sectional view of a river channel measuring device provided by the present invention;

[0023] Figure 3 A three-dimensional diagram of the retractable and extendable adjustment mechanism provided by the present invention;

[0024] Figure 4 for Figure 2 A partial enlarged view of part A;

[0025] Figure 5 for Figure 2 A partial enlarged view of part B.

[0026] Among them, 1. depth marking component, 2. automatic trigger component, 3. retractable adjustment mechanism, 4. L-shaped support frame, 5. button placement frame, 6. reinforcing ribs, 7. parallel plate capacitor, 8. limit cavity, 9. electrorheological fluid, 10. lifting guide column, 11. lifting guide groove, 12. falling weight block, 13. sealing ring, 14. probe measurement column, 15. internal touch button, 16. marking component shell, 17. sludge support platform, 18. external touch button, 19. automatic trigger block, 20. T-shaped slide groove, 21. trigger button, 22. blocking groove, 23. sliding ejection groove, 24. ejection rod, 25. ejection spring, 26. ejection limit plate, 27. blocking layer, 28. retractable belt, 29. retractable wheel one, 30. retractable wheel two, 31. sliding retractable platform, 32. sliding guide wheel, 33. water depth indicator light, 34. sludge depth indicator light.

[0027] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0030] like Figure 1-Figure 3As shown, the present invention provides a river channel measuring device, including a depth marking component 1, an automatic trigger component 2, a retractable adjustment mechanism 3, an L-shaped support frame 4 and a button mounting frame 5, the L-shaped support frame 4 is installed on the river bank, the button mounting frame 5 is fixedly connected to the L-shaped support frame 4, the retractable adjustment mechanism 3 is arranged on the L-shaped support frame 4, the automatic trigger component 2 is arranged on the retractable adjustment mechanism 3, the depth marking component 1 is arranged on the automatic trigger component 2, and the L-shaped support frame 4 is also provided with reinforcing ribs 6.

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, the depth marking assembly 1 includes a parallel plate capacitor 7, a limit cavity 8, an electrorheological fluid 9, a lifting guide column 10, a lifting guide groove 11, a falling weight 12, a sealing ring 13, a probe measuring column 14, an internal touch button 15, a marking assembly housing 16, a sludge support platform 17 and an external touch button 18. The marking assembly housing 16 is arranged on the retractable adjustment mechanism 3, the lifting guide column 10 is fixedly connected to the inner wall of the marking assembly housing 16 in two groups, the falling weight 12 is slidably arranged on the lifting guide column 10, the limit cavity 8 is arranged in the falling weight 12, and the lifting guide groove 11 is arranged in the falling weight 12 The falling weight 12 is slidably engaged with the lifting guide groove 11 and is arranged on the lifting guide column 10. The parallel plate capacitor 7 is embedded between the inner walls of the marking component housing 16. The sealing ring 13 is arranged at the upper and lower ends of the limit cavity 8. The probe measuring column 14 is arranged at the bottom of the falling weight 12. The internal touch button 15 array is arranged on the inner wall of the marking component housing 16. The sludge support platform 17 is fixedly connected to the bottom of the marking component housing 16. The external touch button 18 array is arranged on the button placement frame 5. The electrorheological fluid 9 is filled in the limit cavity 8. The falling weight 12 contacts the internal touch button 15 when moving.

[0032] like Figure 5 As shown, the automatic trigger assembly 2 includes an automatic trigger block 19, a T-shaped slide groove 20, a trigger button 21, a blocking groove 22, a sliding ejection groove 23, an ejection rod 24, an ejection spring 25, an ejection limiter 26 and a blocking layer 27. The T-shaped slide groove 20 is arranged at the bottom of the sludge support platform 17, the automatic trigger block 19 is slidably arranged on the T-shaped slide groove 20, the trigger button 21 is arranged on the inner wall of the T-shaped slide groove 20, and the blocking groove 22 is arranged on the side of the sludge support platform 17. The ejection rod 24 is slidably arranged on the sliding ejection groove 23, the ejection limit piece 26 is fixed to one end of the ejection rod 24, the ejection spring 25 is arranged between the ejection limit piece 26 and the sliding ejection groove 23, the blocking layer 27 is arranged at the opening of the blocking groove 22, the ejection limit piece 26 is against the inner side of the blocking layer 27, the trigger button 21 and the parallel plate capacitor 7 are electrically connected, and the blocking layer 27 is made of water-soluble paper.

[0033] like Figure 3 As shown, the retractable and unretractable mechanism 3 includes a retractable and unretractable belt 28, a retractable and unretractable wheel 1 29, a retractable and unretractable wheel 2 30, a sliding retractable and unretractable platform 31 and a sliding guide wheel 32. The retractable and unretractable wheel 1 29 is arranged at the bending part of the L-shaped support frame 4, the retractable and unretractable wheel 2 30 is arranged at one end of the L-shaped support frame 4, the sliding guide wheel 32 is slidably engaged on the inner wall of the L-shaped support frame 4, the sliding retractable and unretractable platform 31 is arranged between the sliding guide wheels 32, one end of the retractable and unretractable belt 28 is arranged on the sliding retractable and unretractable platform 31, and the other end of the retractable and unretractable belt 28 passes through the retractable and unretractable wheel 2 30.

[0034] like Figure 1 , Figure 2 and Figure 5 As shown, a water depth indicator light 33 is provided on the L-shaped support frame 4, and a silt depth indicator light 34 is also provided on the L-shaped support frame 4. The external touch button 18 and the water depth indicator light 33 are electrically connected, and the internal touch button 15 and the silt depth indicator light 34 are electrically connected. The internal touch button 15, the external touch button 18 and the trigger button 21 are set as waterproof buttons, and the internal touch button 15 and the external touch button 18 have the same size, and the water depth indicator light 33 and the silt depth indicator light 34 have the same size.

[0035] like Figure 1 and Figure 3 As shown, the end of the retractable strap 28 is connected to the top of the marking assembly housing 16.

[0036] like Figure 4 As shown, the limiting cavity 8 is communicated with the lifting guide groove 11.

[0037] like Figure 2 As shown, the sludge support platform 17 is a cylindrical platform.

[0038] like Figure 1 and Figure 4 As shown, parallel plate capacitors 7 are arranged in pairs in parallel between the inner walls of the marking assembly housing 16.

[0039] like Figure 1 and Figure 2 As shown, the probe column 14 moves through the bottom of the marking assembly housing 16 and the mud support platform 17.

[0040] like Figure 1 and Figure 5 As shown, when the ejection limit piece 26 moves, it contacts the external touch button 18, and the automatic trigger block 19 is in a T shape.

[0041] When in use, by adjusting the sliding retractable platform 31, the retractable belt 28 passes through the retractable wheel 1 29 and the retractable wheel 2 30 and drives the marking component shell 16 to move, and the height of the marking component shell 16 is controlled, so that the silt support platform 17 stably enters the water surface of the river. At this time, the blocking layer 27 on the blocking groove 22 dissolves in water, and the dissolved blocking layer 27 no longer supports the ejection limit plate 26. Therefore, the ejection spring 25 ejects the ejection limit plate 26 outward through the ejection rod 24, so that the ejection limit plate 26 contacts a plurality of groups of external touch buttons 18. The plurality of groups of external touch buttons 18 correspond to a plurality of groups of water depth indicator lights 33 one by one. When the marking component shell 16 drives the silt support platform 17 to continue to enter the river water, the marking component shell 16 moves synchronously. The movable ejection limit piece 26 contacts with several groups of external touch buttons 18, and makes several groups of water depth indicator lights 33 light up. The more the number of water depth indicator lights 33 that light up, the greater the water depth. When the silt support platform 17 continues to descend until it contacts the silt at the bottom of the river channel, the moving marking component housing 16 stops, and the automatic trigger block 19 contacts with the silt first, so that the automatic trigger block 19 is pushed up and enters the T-shaped slide 20, so that the automatic trigger block 19 presses the trigger button 21. The trigger button 21 is set to be normally closed, so that the electrorheological fluid 9 maintains a solid state before, so that the falling weight 12 is fixed on the lifting guide column 10 through the solid electrorheological fluid 9, so that the probe measuring column 14 will not move, and the trigger button After 21 is pressed, the internal circuit is disconnected, the electrorheological fluid 9 is converted into a liquid state, the falling weight 12 moves downward due to its own gravity, and drives the probe measuring column 14 to probe into the sludge until the bottom of the probe measuring column 14 probes into the bottom of the sludge, and the probe measuring column 14 stops moving. During the movement of the probe measuring column 14, the falling weight 12 also moves downward by the same distance, so the several groups of internal touch buttons 15 passed by the falling weight 12 during the movement light up the corresponding several groups of sludge depth indicator lights 34, and the several groups of internal touch buttons 15 correspond to the several groups of sludge depth indicator lights 34 one by one. The more the number of lit sludge depth indicator lights 34 is, the greater the depth of the sludge is. By observing the number of lighted water depth indicator lights 33 and silt depth indicator lights 34, the ratio of the water depth and silt depth of the river channel can be obtained. Since the water depth indicator lights 33 and the silt depth indicator lights 34 have the same size, the lighting conditions of several groups of water depth indicator lights 33 and silt depth indicator lights 34 can provide an intuitive indication of the silt depth and water level. This solution converts the problem of silt depth and water level that are difficult to observe intuitively in the river channel into the problem of observing the water depth indicator lights 33 and silt depth indicator lights 34 on the L-shaped support frame 4, which is obviously more intuitive and convenient. In addition, the water depth indicator lights 33 and silt depth indicator lights 34 of the same size can proportionally indicate the silt depth and water level in the river channel, and the measurement result is accurate.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0044] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A river channel measuring device, characterized in that: The invention comprises a depth marking component (1), an automatic trigger component (2), a retractable adjustment mechanism (3), an L-shaped support frame (4) and a button mounting frame (5), wherein the L-shaped support frame (4) is installed on a river bank, the button mounting frame (5) is fixedly connected to the L-shaped support frame (4), the retractable adjustment mechanism (3) is arranged on the L-shaped support frame (4), the automatic trigger component (2) is arranged on the depth marking component (1), and the L-shaped support frame (4) is further provided with a reinforcing rib (6); The depth marking assembly (1) comprises a parallel plate capacitor (7), a limit cavity (8), an electrorheological fluid (9), a lifting guide column (10), a lifting guide groove (11), a falling weight (12), a sealing ring (13), a probe measuring column (14), an internal touch button (15), a marking assembly housing (16), a sludge support platform (17) and an external touch button (18); the marking assembly housing (16) is arranged on the retractable adjustment mechanism (3); the lifting guide column (10) is fixedly connected to the inner wall of the marking assembly housing (16) in two groups; the falling weight (12) is slidably arranged on the lifting guide column (10); the limit cavity (8) is arranged in the falling weight (12); and the lifting guide groove (11) is arranged in the falling weight (12). The falling weight (12) is slidably engaged with the lifting guide groove (11) and is arranged on the lifting guide column (10); the parallel plate capacitor (7) is embedded between the inner walls of the marking component housing (16); the sealing ring (13) is arranged at the upper and lower ends of the limit cavity (8); the probe measurement column (14) is arranged at the bottom of the falling weight (12); the internal touch button (15) array is arranged on the inner wall of the marking component housing (16); the sludge support platform (17) is fixedly connected to the bottom of the marking component housing (16); the external touch button (18) array is arranged on the button mounting frame (5); the electrorheological fluid (9) is filled in the limit cavity (8); and the falling weight (12) contacts the internal touch button (15) when moving; The automatic trigger assembly (2) comprises an automatic trigger block (19), a T-shaped slide groove (20), a trigger button (21), a blocking groove (22), a sliding ejection groove (23), an ejection rod (24), an ejection spring (25), an ejection limit plate (26) and a blocking layer (27), wherein the T-shaped slide groove (20) is arranged at the bottom of the sludge support platform (17), the automatic trigger block (19) is slidably engaged with the T-shaped slide groove (20), the trigger button (21) is arranged on the inner wall of the T-shaped slide groove (20), and the blocking groove (22) is arranged on the side wall of the sludge support platform (17). The sliding ejection groove (23) is arranged on the inner wall of the blocking groove (22); the ejection rod (24) is slidably arranged on the sliding ejection groove (23); the ejection limit plate (26) is fixed to one end of the ejection rod (24); the ejection spring (25) is arranged between the ejection limit plate (26) and the sliding ejection groove (23); the blocking layer (27) is arranged at the opening of the blocking groove (22); the ejection limit plate (26) is against the inner side of the blocking layer (27); the trigger button (21) and the parallel plate capacitor (7) are electrically connected; and the blocking layer (27) is made of water-soluble paper; The retractable and unretractable mechanism (3) comprises a retractable and unretractable belt (28), a retractable and unretractable wheel 1 (29), a retractable and unretractable wheel 2 (30), a sliding retractable and unretractable platform (31) and a sliding guide wheel (32), wherein the retractable and unretractable wheel 1 (29) is arranged at a bending portion of the L-shaped support frame (4), the retractable and unretractable wheel 2 (30) is arranged at one end of the L-shaped support frame (4), the sliding guide wheel (32) is slidably engaged on the inner wall of the L-shaped support frame (4), the sliding retractable and unretractable platform (31) is arranged between the sliding guide wheels (32), one end of the retractable and unretractable belt (28) is arranged on the sliding retractable and unretractable platform (31), and the other end of the retractable and unretractable belt (28) passes through the retractable and unretractable wheel 2 (30); A water depth indicator light (33) is provided on the L-shaped support frame (4), and a silt depth indicator light (34) is also provided on the L-shaped support frame (4); the external touch button (18) and the water depth indicator light (33) are electrically connected, and the internal touch button (15) and the silt depth indicator light (34) are electrically connected; the internal touch button (15), the external touch button (18) and the trigger button (21) are configured as waterproof buttons; the internal touch button (15) and the external touch button (18) have the same size, and the water depth indicator light (33) and the silt depth indicator light (34) have the same size; The end of the retractable belt (28) is connected to the top of the marking component housing (16); The ejection limiting piece (26) contacts the external touch button (18) when moving.

2. A river channel measuring device according to claim 1, characterized in that: The limiting cavity (8) is communicated with the lifting guide groove (11).

3. A river channel measuring device according to claim 2, characterized in that: The sludge support platform (17) is a cylindrical platform.

4. A river channel measuring device according to claim 3, characterized in that: The parallel plate capacitors (7) are arranged in pairs in parallel between the inner walls of the marking component housing (16).

5. A river channel measuring device according to claim 4, characterized in that: The probe measuring column (14) moves through the bottom of the marking component housing (16) and the sludge support platform (17), and the automatic trigger block (19) is T-shaped.

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