Sampling device for hydraulic engineering detection

Abstract

The invention provides a sampling device for hydraulic engineering detection, and belongs to the technical field of detection and analysis. Comprising a sampling plate, a wheel seat is arranged on the sampling plate, a winding wheel is rotatably arranged on the wheel seat, the winding wheel is connected with a rotating shaft of a winding motor, the winding motor is arranged above the sampling plate, a long hose is wound on the winding wheel, a hollow pipe is arranged in the middle of the winding wheel, one end of the long hose is connected with the hollow pipe of the winding wheel, and a floating plate is arranged at the other end of the long hose. A connecting port is formed in the floating plate, the sampling pipe is arranged on the connecting port, the sampling pipe is communicated with the long hose, the sampling pipe with the appropriate length is selected, the sampling pipe is installed in the connecting port, the sampling pipe is communicated with the long hose, the ship runs to the position above a water area needing to be analyzed and sampled, the floating plate is placed on the water surface, and the sampling pipe is inserted into the water. Therefore, a water sample at a specified depth can be sampled, and the water sample can be smoothly put into the sampling bottle.

Description

Technical Field

[0001] The invention belongs to the technical field of detection and analysis, and specifically relates to a sampling device for water conservancy project detection. Background Art

[0002] When carrying out water conservancy projects, it is necessary to conduct a comprehensive test and analysis of the water quality of the water area in order to fully understand the conditions of the water area, thereby providing a scientific basis and decision-making support for the smooth progress of the water conservancy project. The usual practice is to sample the water area and then conduct physical and chemical analysis on the samples. During the sampling process, it is necessary to fully consider that there may be differences in water quality at different locations in the water area, so it is necessary to sample at multiple representative locations in the water area to ensure the comprehensiveness and representativeness of the sampling; at the same time, the sampling depth is also an important factor affecting the results of water quality testing and analysis.

[0003] In the prior art, water samples are usually extracted from the water area using a bucket and then transferred to a sampling bottle. However, this method is not only inefficient and labor-intensive, but more importantly, it is difficult to ensure that accurate water samples at a specified depth are obtained. Similarly, although the use of a water pump for sampling can improve efficiency to a certain extent, this method still cannot accurately control the sampling depth, and there are also many inconveniences when transferring water samples to the sampling bottle. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a sampling device for water conservancy project detection.

[0005] The technical solution adopted to solve the above technical problems is: a sampling device for water conservancy project detection, including a sampling plate, characterized in that a wheel seat is provided on the sampling plate, a winding wheel is rotatably provided on the wheel seat, the winding wheel is connected to the rotating shaft of the winding motor, the winding motor is arranged above the sampling plate, a long hose is wound on the winding wheel, the middle of the winding wheel is a hollow tube, one end of the long hose is connected to the hollow tube of the winding wheel, a floating plate is provided at the other end of the long hose, a connecting port is provided on the floating plate, a sampling tube is provided on the connecting port, and the sampling tube is connected to the long hose One end of the connecting tube one is connected to the hollow tube of the winding wheel, the other end of the connecting tube one is connected to the inlet of the sampling motor, the sampling motor is arranged on the sampling plate, the outlet of the sampling motor is connected to one end of the connecting tube two, the other end of the connecting tube two is connected to the inlet of the short tube, the short tube is fixed on the bracket, the bracket is fixed on the sampling plate, the outlet of the short tube is connected to one end of the short hose, the other end of the short hose is connected to the inlet of the three-way rotating plate, the three-way rotating plate has two outlets, a deflection head is rotatably provided on the three-way rotating plate, and a liquid outlet pipe is provided on the deflection head.

[0006] Furthermore, the three-way rotating plate is fixedly arranged on the insertion plate, a sliding rod is arranged on the insertion plate, the sliding rod is slidably arranged on the bracket, and the two ends of the spring are respectively connected to the insertion plate and the bracket.

[0007] Furthermore, the bracket is provided with a liquid guide tube, and the liquid guide tube is used to be connected to the liquid outlet tube.

[0008] Furthermore, a transposition motor is provided on the sampling plate, a notched gear is provided on the rotating shaft of the transposition motor, the notched gear is meshed with a transposition rack, the transposition rack is fixed on the shifting plate, the shifting plate is slidably provided on the sampling plate, and a plurality of storage units are provided on the shifting plate.

[0009] Furthermore, the storage unit includes a unit plate, which is fixed on the moving plate, and two clamps are symmetrically slidably provided on the unit plate. The two ends of spring two are respectively connected to the unit plate and the clamp, the bottom of the clamp is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the end of the transfer rod, and the middle part of the transfer rod is rotatably provided at the bottom of the unit plate.

[0010] Furthermore, a guide plate is provided on the upper side of the clamping plate, and the guide plate is convenient for placing the sampling bottle.

[0011] Furthermore, the notched gear is also meshed with gear one, gear one is fixed on the vertical shaft, the vertical shaft is rotatably arranged on the sampling plate, a bevel gear one is provided on the upper part of the vertical shaft, bevel gear one is meshed with bevel gear two, bevel gear two is provided on the horizontal shaft, the horizontal shaft is rotatably arranged on the sampling plate, a gear two is also provided on the horizontal shaft, gear two is meshed with an insertion rack, the insertion rack is fixed on the vertical moving plate, the vertical moving plate is slidably arranged on the bracket, the two ends of spring three are respectively connected to the vertical moving plate and the bracket, a transfer rack is provided on spring three, the transfer rack is meshed with gear three, and gear three is fixed on the deflection head.

[0012] Furthermore, a pull rod is provided at the end of the vertically movable plate, and the pull rod is inserted into the sliding groove of the insertion and displacement plate.

[0013] The beneficial effects of the present invention are as follows: (1) The present invention adopts a sampling tube of appropriate length, installs the sampling tube in the connecting port, connects the sampling tube and the long hose, runs the boat to the water area where the sampling needs to be analyzed, places the floating plate on the water surface, and inserts the sampling tube into the water, so that the water sample of the specified depth can be sampled; (2) The sampling motor of the present invention provides suction, water is sucked from the sampling tube, and finally the water sprayed from the liquid outlet pipe is guided out of the boat from the liquid guide pipe until the water sprayed from the liquid outlet pipe is the water at the sampling point, so that the water sprayed from the liquid outlet pipe can be ensured to be the sample to be collected; (3) The transposition motor of the present invention provides power. During one rotation of the transposition motor, the sampling bottle of the storage unit is first located below the liquid outlet pipe, and then the liquid outlet pipe is rotated 270 degrees. The liquid outlet pipe is rotated to a vertical state, and the liquid outlet pipe is inserted into the inlet of the sampling bottle, so that the sampled water is smoothly put into the sampling bottle, and the liquid outlet pipe is automatically closed during the rotation process to ensure that the sampled water does not leak. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the front side of an embodiment of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the back side of an embodiment of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the installation of the reel and the long hose of the present invention.

[0017] Figure 4 It is a structural schematic diagram of the storage unit and the liquid guiding tube installation of the present invention.

[0018] Figure 5 It is a structural schematic diagram of the transposed motor installation of the present invention.

[0019] Figure 6 It is a structural schematic diagram of the installation of the liquid outlet pipe and the liquid guide pipe of the present invention.

[0020] Figure 7 It is a schematic structural diagram of the explosion of the deflection head installation of the present invention.

[0021] Figure 8 It is a structural schematic diagram of the installation of the insertion and displacement plate of the present invention.

[0022] Fig. 9 It is a structural schematic diagram of the front side of the three-way rotating plate of the present invention.

[0023] Fig.10 It is a structural schematic diagram of the back side of the three-way rotating plate of the present invention.

[0024] Fig.11 It is a structural schematic diagram of the installation of the transposition rack and the storage unit of the present invention.

[0025] Fig.12 It is a structural schematic diagram of the front side of the storage unit of the present invention.

[0026] Fig.13 It is a structural schematic diagram of the bottom of the storage unit of the present invention.

[0027] Fig.14 It is a structural schematic diagram of the installation of the clamping plate and the guide plate of the present invention.

[0028] Figure numbers: 1-sampling plate; 2-wheel seat; 3-winding wheel; 4-winding motor; 5-long hose; 6-floating plate; 7-connecting port; 8-sampling tube; 9-connecting tube 1; 10-sampling motor; 11-connecting tube 2; 12-short tube; 13-bracket; 14-short hose; 15-three-way rotating plate; 16-insertion plate; 161-slide; 17-slide rod; 18-spring 1; 19-biased head; 20-liquid outlet pipe; 21-liquid guide pipe; 22-transposition motor; 23-notched gear; 24-transposition rack; 25-shift plate; 26-unit plate; 27-clamp; 271-guide plate; 28-spring two; 29-connecting rod; 30-transfer rod; 31-sampling bottle; 32-gear one; 33-vertical shaft; 34-bevel gear one; 35-bevel gear two; 36-horizontal shaft; 37-gear two; 38-insert rack; 39-vertical shift plate; 40-spring three; 41-transposition rack; 42-gear three; 43-pull rod. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] like Figures 1 to 14 As shown, a sampling device for water conservancy engineering detection includes a sampling plate 1, a wheel seat 2 is provided on the sampling plate 1, a winding wheel 3 is rotatably provided on the wheel seat 2, the winding wheel 3 is connected to the rotating shaft of the winding motor 4, the winding motor 4 is arranged above the sampling plate 1, a long hose 5 is wound on the winding wheel 3, the middle of the winding wheel 3 is a hollow tube, one end of the long hose 5 is connected to the hollow tube of the winding wheel 3, the other end of the long hose 5 is provided with a floating plate 6, the floating plate 6 is provided with a connecting port 7, a sampling tube 8 is arranged on the connecting port 7, the sampling tube 8 is connected to the long hose 5, one end of a connecting tube 9 is connected to the hollow tube of the winding wheel 3, and the other end of the connecting tube 9 is connected to the sampling tube The inlet of the motor 10 is connected, the sampling motor 10 is arranged on the sampling plate 1, the outlet of the sampling motor 10 is connected to one end of the connecting tube 11, the other end of the connecting tube 11 is connected to the inlet of the short tube 12, the short tube 12 is fixedly arranged on the bracket 13, the bracket 13 is fixedly arranged on the sampling plate 1, the outlet of the short tube 12 is connected to one end of the short hose 14, the other end of the short hose 14 is connected to the inlet of the three-way rotating plate 15, the three-way rotating plate 15 has two outlets, the three-way rotating plate 15 is rotatably provided with a deflection head 19, and the deflection head 19 is provided with a liquid outlet pipe 20.

[0031] The sampling tube 8 is detachably disposed in the connecting port 7. Optionally, the sampling tube 8 and the connecting port 7 are connected by threads. The length of the sampling tube 8 is selected according to the depth of the sample to be collected.

[0032] Specifically, the sampling plate 1 is placed on the ship, and the ship runs to the water area where the sampling needs to be analyzed, the winding motor 4 is started, the winding wheel 3 is driven to rotate, and the long hose 5 on the winding wheel 3 is released, so that the floating plate 6 is placed on the water surface, and the sampling tube 8 is inserted into the water, and the sampling motor 10 is started to provide suction, and water is sucked from the sampling tube 8. The sampled water passes through the connecting tube 1 9, the long hose 5, the hollow tube of the winding wheel 3, the connecting tube 1 9, the sampling motor 10, the connecting tube 2 11, the short tube 12, and the bracket 1 in sequence. 3. The short hose 14 enters into the three-way rotating plate 15; when the liquid outlet pipe 20 is horizontal, the inlet of the deflection head 19 is connected to one outlet of the three-way rotating plate 15; when the liquid outlet pipe 20 rotates 270 degrees, the liquid outlet pipe 20 is in a vertical state, and the inlet of the deflection head 19 is connected to the other outlet of the three-way rotating plate 15; therefore, when the liquid outlet pipe 20 is in a horizontal or vertical state, the liquid in the three-way rotating plate 15 enters into the deflection head 19 and then sprays out from the liquid outlet pipe 20.

[0033] The three-way rotating plate 15 is fixedly arranged on the insertion plate 16, and a slide bar 17 is arranged on the insertion plate 16. The slide bar 17 is slidably arranged on the bracket 13, and the two ends of the spring 18 are respectively connected to the insertion plate 16 and the bracket 13.

[0034] Specifically, the insertion plate 16 moves downward, the slide bar 17 slides in the bracket 13, and the spring 18 is stretched.

[0035] The bracket 13 is provided with a liquid guiding tube 21 , and the liquid guiding tube 21 is used to be connected with the liquid outlet tube 20 .

[0036] Specifically, when the liquid outlet pipe 20 is in a horizontal state, the liquid outlet pipe 20 is placed at the inlet of the liquid guide pipe 21 , and the liquid sprayed from the liquid outlet pipe 20 is guided out of the ship through the liquid guide pipe 21 .

[0037] The sampling plate 1 is provided with a transposition motor 22, and a notched gear 23 is provided on the rotating shaft of the transposition motor 22. The notched gear 23 is meshed with a transposition rack 24, and the transposition rack 24 is fixed on a shift plate 25. The shift plate 25 is slidably arranged on the sampling plate 1, and a plurality of storage units are arranged on the shift plate 25.

[0038] Specifically, the transposition motor 22 is started, the notched gear of the transposition motor 22 first meshes with the transposition rack 24 , and the notched gear 23 drives the transposition rack 24 to move, so that the shift plate 25 moves, so that the sampling bottle 31 of the first group of storage units is located below the liquid outlet pipe 20 .

[0039] The storage unit includes a unit plate 26, which is fixed on a moving plate 25. Two clamps 27 are symmetrically slidably provided on the unit plate 26. The two ends of a spring 28 are respectively connected to the unit plate 26 and the clamp 27. The bottom of the clamp 27 is hinged to one end of a connecting rod 29, and the other end of the connecting rod 29 is hinged to the end of a transfer rod 30. The middle part of the transfer rod 30 is rotatably provided at the bottom of the unit plate 26.

[0040] A guide plate 271 is provided on the upper side of the clamping plate 27 , and the guide plate 271 is convenient for placing the sampling bottle 31 .

[0041] Specifically, when the sampling bottle 31 is placed into the clamping plate 27, the sampling bottle 31 first contacts the guide plate 271, causing the two clamping plates 27 to move outward, and the spring 28 is compressed. When the sampling bottle 31 is placed into the clamping plate 27, the spring 28 provides power to cause the two clamping plates 27 to clamp the sampling bottle 31. Due to the restrictions of the transfer rod 30 and the connecting rod 29, the two clamping plates 27 move synchronously, thereby ensuring that the sampling bottle 31 is clamped in the middle position of the unit plate 26.

[0042] The notched gear 23 is also meshed with gear 1 32, gear 1 32 is fixed on the vertical shaft 33, the vertical shaft 33 is rotatably arranged on the sampling plate 1, a bevel gear 1 34 is provided on the upper part of the vertical shaft 33, bevel gear 1 34 is meshed with bevel gear 2 35, bevel gear 2 35 is arranged on the horizontal shaft 36, the horizontal shaft 36 is rotatably arranged on the sampling plate 1, a gear 2 37 is also provided on the horizontal shaft 36, gear 2 37 is meshed with an insertion rack 38, the insertion rack 38 is fixed on the vertical moving plate 39, the vertical moving plate 39 is slidably arranged on the bracket 13, the two ends of the spring 3 40 are respectively connected to the vertical moving plate 39 and the bracket 13, a transfer rack 41 is provided on the spring 3 40, the transfer rack 41 is meshed with gear 3 42, and gear 3 42 is fixedly arranged on the deflection head 19.

[0043] A pull rod 43 is provided at the end of the vertical displacement plate 39 , and the pull rod 43 is inserted into the sliding groove 161 of the insertion displacement plate 16 .

[0044] Specifically, the transposition motor 22 rotates continuously, and after the notched gear 23 disengages from the transposition rack 24, the notched gear 23 meshes with gear one 32, and the notched gear 23 drives gear one 32 to rotate, and transmits power through the vertical shaft 33, bevel gear one 34, and bevel gear two 35 to rotate the horizontal shaft 36, and then transmits power through gear two 37 and the insertion rack 38 to move the vertical moving plate 39 downward along the bracket 13, and the spring three 40 is compressed, and the transposition rack 41 drives gear three 42 to rotate two hundred and seventy degrees, so that the liquid outlet pipe 20 rotates to a vertical state. At this time, the pull rod 43 moves to the bottom of the slide groove 161, and the pull rod 43 pulls the insertion plate 16 downward, so the liquid outlet pipe 20 moves downward synchronously, and the liquid outlet pipe 20 is inserted into the entrance of the sampling bottle 31.

[0045] Working principle: According to the required depth, select a sampling tube 8 of appropriate length, install the sampling tube 8 in the connecting port 7, connect the sampling tube 8 and the long hose 5, move the boat to the water area where the sampling needs to be analyzed, and at the same time put the clean liquid guide tube 21 into the clamping plate 27. The two clamping plates 27 clamp the sampling bottle 31 in the middle position of the unit plate 26.

[0046] Start the winding motor 4 to drive the winding wheel 3 to rotate, release the long hose 5 on the winding wheel 3, place the float 6 on the water surface, insert the sampling tube 8 into the water, start the sampling motor 10 to provide suction, and water is sucked from the sampling tube 8. The sampled water passes through the connecting tube 1 9, the long hose 5, the hollow tube of the winding wheel 3, the connecting tube 1 9, the sampling motor 10, the connecting tube 2 11, the short tube 12, the bracket 13, and the short hose 14 in sequence and enters the three-way rotating plate 15. At this time, the liquid outlet pipe 20 is in a horizontal state. The liquid outlet pipe 20 is placed at the inlet of the liquid guide tube 21, and the inlet of the deflection head 19 is connected to an outlet of the three-way rotating plate 15. The liquid sprayed from the liquid outlet pipe 20 is discharged from the liquid guide tube 21 to the outside of the ship until the liquid sprayed from the liquid outlet pipe 20 is the adopted liquid, so it can be ensured that the liquid sprayed from the liquid outlet pipe 20 is the collected sample.

[0047] The transposition motor 22 is started, and the notched gear of the transposition motor 22 first meshes with the transposition rack 24, and the notched gear 23 drives the transposition rack 24 to move, so that the shift plate 25 moves, so that the sampling bottle 31 of the first group of storage units is located below the liquid outlet pipe 20; the transposition motor 22 continues to rotate, and after the notched gear 23 is disengaged from the transposition rack 24, the notched gear 23 meshes with the gear 1 32, and the notched gear 23 drives the gear 1 32 to rotate, and the power is transmitted through the vertical shaft 33, the bevel gear 1 34, and the bevel gear 2 35 to rotate the horizontal shaft 36, and then through the gear 2 37 The power is transmitted to the insertion rack 38, so that the vertical moving plate 39 moves downward along the bracket 13, the spring three 40 is compressed, and the indexing rack 41 drives the gear three 42 to rotate 270 degrees, so the liquid outlet pipe 20 rotates to a vertical state. At this time, the pull rod 43 moves to the bottom of the slide slot 161, and the pull rod 43 pulls the insertion plate 16 to move downward, so the liquid outlet pipe 20 moves downward synchronously, and the liquid outlet pipe 20 is inserted into the entrance of the sampling bottle 31. At the same time, the entrance of the deflection head 19 is connected with the other outlet of the three-way rotating plate 15, and the sampled liquid is sprayed from the liquid outlet pipe 20 into the sampling bottle 31. After the sampling bottle 31 is full of samples, the indexing motor 22 drives the notch gear 23 to move to the original state, the notch gear 23 is separated from the gear one 32, and the spring three 40 provides elastic force to make the vertical moving plate 39 rise along the bracket 13, and the liquid outlet pipe 20 rotates to a horizontal state again, and the sampling boat moves to a new sampling point, and repeats the above process for new collection.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A sampling device for water conservancy project detection, comprising a sampling plate (1), characterized in that: A wheel seat (2) is provided on the sampling plate (1), a reel (3) is rotatably provided on the wheel seat (2), the reel (3) is connected to the rotating shaft of a reel motor (4), the reel motor (4) is arranged above the sampling plate (1), a long hose (5) is wound on the reel (3), the middle of the reel (3) is a hollow tube, one end of the long hose (5) is connected to the hollow tube of the reel (3), the other end of the long hose (5) is provided with a floating plate (6), the floating plate (6) is provided with a connecting port (7), a sampling tube (8) is provided on the connecting port (7), the sampling tube (8) is connected to the long hose (5), one end of a connecting tube (9) is connected to the hollow tube of the reel (3), the other end of the connecting tube (9) is provided with a connecting port (7), The end of the sampling motor (10) is connected to the inlet of the sampling motor (10), the sampling motor (10) is arranged on the sampling plate (1), the outlet of the sampling motor (10) is connected to one end of the connecting tube (11), the other end of the connecting tube (11) is connected to the inlet of the short tube (12), the short tube (12) is fixedly arranged on the bracket (13), the bracket (13) is fixedly arranged on the sampling plate (1), the outlet of the short tube (12) is connected to one end of the short hose (14), the other end of the short hose (14) is connected to the inlet of the three-way rotating plate (15), the three-way rotating plate (15) has two outlets, a deflection head (19) is rotatably provided on the three-way rotating plate (15), and a liquid outlet pipe (20) is provided on the deflection head (19).

2. A sampling device for water conservancy project detection according to claim 1, characterized in that: The three-way rotating plate (15) is fixedly mounted on the insertion plate (16), a sliding rod (17) is mounted on the insertion plate (16), and the sliding rod (17) is slidably mounted on the bracket (13). The two ends of the spring (18) are respectively connected to the insertion plate (16) and the bracket (13).

3. A sampling device for water conservancy project detection according to claim 2, characterized in that: The support (13) is provided with a liquid guiding tube (21), and the liquid guiding tube (21) is used to be connected to the liquid outlet tube (20).

4. A sampling device for water conservancy project detection according to claim 3, characterized in that: The sampling plate (1) is provided with a transposition motor (22), a notched gear (23) is provided on the rotating shaft of the transposition motor (22), the notched gear (23) is meshed with a transposition rack (24), the transposition rack (24) is fixedly arranged on a shift plate (25), the shift plate (25) is slidably arranged on the sampling plate (1), and a plurality of storage units are provided on the shift plate (25).

5. A sampling device for water conservancy project detection according to claim 4, characterized in that: The storage unit comprises a unit plate (26), the unit plate (26) is fixedly arranged on the moving plate (25), two clamping plates (27) are symmetrically slidably arranged on the unit plate (26), the two ends of the second spring (28) are respectively connected to the unit plate (26) and the clamping plate (27), the bottom of the clamping plate (27) is hinged to one end of the connecting rod (29), the other end of the connecting rod (29) is hinged to the end of the transfer rod (30), and the middle part of the transfer rod (30) is rotatably arranged at the bottom of the unit plate (26).

6. A sampling device for water conservancy project detection according to claim 5, characterized in that: A guide plate (271) is provided on the upper side of the clamping plate (27), and the guide plate (271) facilitates the placement of the sampling bottle (31).

7. A sampling device for water conservancy project detection according to claim 6, characterized in that: The notched gear (23) is also meshed with gear 1 (32). Gear 1 (32) is fixedly mounted on the vertical shaft (33). The vertical shaft (33) is rotatably mounted on the sampling plate (1). A bevel gear 1 (34) is provided on the upper portion of the vertical shaft (33). The bevel gear 1 (34) is meshed with bevel gear 2 (35). The bevel gear 2 (35) is provided on the horizontal shaft (36). The horizontal shaft (36) is rotatably mounted on the sampling plate (1). The horizontal shaft (36) is also provided with a gear The second gear (37) is meshed with an insertion rack (38), the insertion rack (38) is fixedly mounted on a vertical moving plate (39), the vertical moving plate (39) is slidably mounted on a bracket (13), two ends of a spring (40) are respectively connected to the vertical moving plate (39) and the bracket (13), a transfer rack (41) is provided on the spring (40), the transfer rack (41) is meshed with a gear (42), and the gear (42) is fixedly mounted on the deflection head (19).

8. A sampling device for water conservancy project detection according to claim 7, characterized in that: A pull rod (43) is provided at the end of the vertical displacement plate (39), and the pull rod (43) is inserted into the sliding groove (161) of the insertion displacement plate (16).

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