Mechanical triggering device and large-caliber sediment sampling tool bit

Abstract

The utility model discloses a mechanical trigger device and a large-caliber sediment sampling cutter head, which comprises a cutter body tension plate and a box body, one end of the cutter body tension plate is arranged on a cutter body through a cutter body fixing hole, the other end of the cutter body tension plate is inserted into the box body, the box body is arranged on the cutter head, and one end of the cutter body tension plate far away from the cutter body fixing hole is provided with a cross-shaped groove. A T-shaped rotating tension pin rotating along the pin is arranged in the cross-shaped groove, first magnetic blocks are arranged at the two ends of a horizontal structure at the top of the T-shaped rotating tension pin, second magnetic blocks are arranged on the two sides of the cross-shaped groove corresponding to the cutter body tension plate below the pin, and the first magnetic blocks and the second magnetic blocks are opposite in polarity and mutually generate attraction force; the box body comprises a rear cover plate, a front cover plate and a drill bit tension plate, a T-shaped groove is formed in the front cover plate, a clamping groove and a reset hole are formed in the rear cover plate, the clamping groove, the T-shaped groove and the cross-shaped groove are communicated after installation, and the reset hole is communicated with the lower portion of the cross-shaped groove and the lower portion of the T-shaped groove. The utility model has the advantages of simple structure, capability of bearing large load and strong stability.

Description

Technical Field

[0001] The utility model relates to a supporting device for an underwater vertical sediment sampler, in particular to a mechanical trigger device and a large-diameter sediment sampling cutter head. Background Technique

[0002] When conducting submarine geological identification and evaluation research, only by obtaining undisturbed samples of submarine sediments can direct determination of sediment particle size, structure, composition and age be carried out, so as to obtain the corresponding geological conditions. When sampling submarine sediments, a sediment sampling cutter head is needed. The Chinese invention patent with the application number 202111432856.2 discloses a sediment sampling cutter head, which realizes the relative sliding of the cutter body and the cutter head through the opening and closing of a locking structure, thereby improving the smoothness of sediment entering the sampling tube and increasing the sampling rate. In this patent, the locking mechanism is locked by elastic components such as springs. The elastic components will have problems such as aging and dislocation, resulting in the failure of the locking mechanism; in addition, the elastic force of elastic components such as springs is limited. When more sediment samples need to be collected, a large-diameter (diameter exceeding 200 mm) sediment sampling cutter head is required, and the size of the corresponding locking mechanism also increases. The original structure needs to provide greater power to unlock, and at this time the elastic components cannot meet the requirements. That is, the locking mechanism in this patent is only applicable to small-diameter sediment sampling cutter heads and is not applicable to large-diameter sampling cutter heads, and the stability is poor. Content of the Utility Model

[0003] In order to overcome the above problems existing in the prior art, the utility model provides a mechanical trigger device and a sediment sampling cutter head.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a mechanical trigger device, including a cutter body tension plate and a box body. One end of the cutter body tension plate is installed on the cutter body through a cutter body fixing hole, and the other end is inserted into the box body. The box body is installed on the cutter head. A cross groove is arranged at one end of the cutter body tension plate far from the cutter body fixing hole. A T-shaped rotary tension pin rotating along a pin is arranged in the cross groove. First magnetic blocks are arranged at both ends of the horizontal structure at the top of the T-shaped rotary tension pin. Second magnetic blocks are arranged on both sides of the cross groove corresponding to the lower part of the pin. The first magnetic blocks and the second magnetic blocks have opposite polarities.

[0005] The box body includes a rear cover plate, a front cover plate and a drill bit tension plate. The drill bit tension plate is located between the rear cover plate and the front cover plate. A T-shaped groove is arranged on the rear cover plate. The T-shaped groove is adapted to the T-shaped rotary tension pin. A clamping groove and a reset hole are arranged on the front cover plate. The reset hole is located below the clamping groove. The clamping groove and the T-shaped groove are used to limit the T-shaped rotary tension pin in a horizontal state. After installation, the clamping groove, the T-shaped groove and the cross groove are communicated. The reset hole is communicated with the lower part of the cross groove and the lower part of the T-shaped groove.

[0006] For the above mechanical trigger device, mudguard covers are installed on the rear cover plate corresponding to the T-shaped groove, the front cover plate corresponding to the card slot and the reset hole.

[0007] For the above mechanical trigger device, a drill bit fixing hole is provided at the bottom of the drill bit tension plate, and the box body is installed on the cutter head through the drill bit fixing hole.

[0008] For the above mechanical trigger device, the drill bit tension plate is a U-shaped plate, and the cutter body tension plate is inserted into the notch above the drill bit tension plate.

[0009] A large-diameter sediment sampling cutter head includes a cutter body and a cutter head, and is installed with the above-mentioned mechanical trigger device. There are two groups of the mechanical trigger devices, and the two groups of the mechanical trigger devices are symmetrically installed on the sediment sampling cutter head.

[0010] The beneficial effect of the present utility model is that the present utility model only needs to rely on gravity and magnetism to complete the unlocking process, has a simple structure, can bear large loads, and has strong stability. Brief Description of the Drawings

[0011] The present utility model will be further described below with reference to the drawings and embodiments.

[0012] Figure 1 It is a schematic diagram of the present utility model;

[0013] Figure 2 It is a side sectional view of the present utility model;

[0014] Figure 3 It is an exploded view of the box body of the present utility model;

[0015] Figure 4 It is a schematic diagram of the cutter body tension plate of the present utility model

[0016] Figure 5 It is a schematic diagram of the locked state during installation and use of the present utility model;

[0017] Figure 6 It is a schematic diagram of the opened state during installation and use of the present utility model.

[0018] In the figure, 1. Rear cover plate, 2. Cutter body tension plate, 3. Front cover plate, 4. First mudguard cover, 5. Drill bit fixing hole, 6. Cutter body fixing hole, 7. T-shaped rotary tension pin, 8. Pin, 9. Reset hole, 10. First magnet, 11. T-shaped groove, 12. Drill bit tension plate, 13. Second mudguard cover, 14. Cutter head, 15. Card slot, 16. Cross groove, 17. Second magnet, 18. Cutter body, 19. Mechanical trigger device. Detailed Embodiment

[0019] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] As Figure 1-2 shown, this embodiment discloses a mechanical trigger device, including a tool body tension plate 2 and a box body. One end of the tool body tension plate 2 is installed on the tool body through a tool body fixing hole 6, and the other end is inserted into the box body. The box body is installed on the tool head. As Figure 4 shown, at one end of the tool body tension plate 2 away from the tool body fixing hole 6, a cross groove 16 is provided. A T-shaped rotary tension pin 7 that rotates along a pin 8 is arranged in the cross groove 16. At both ends of the horizontal structure at the top of the T-shaped rotary tension pin 7, first magnetic blocks 10 are provided. On both sides of the cross groove 16 corresponding to the lower part of the pin 8, second magnetic blocks 17 are provided. The first magnetic blocks 10 and the second magnetic blocks 17 have opposite polarities.

[0021] As Figure 3 shown, the box body includes a rear cover plate 1, a front cover plate 3, and a drill bit tension plate 12. The drill bit tension plate 12 is located between the rear cover plate 1 and the front cover plate 3. The drill bit tension plate is a U-shaped plate, and the tool body tension plate is inserted into the notch above the drill bit tension plate. At the bottom of the drill bit tension plate, a drill bit fixing hole 5 is provided, and the box body is installed on the tool head through the drill bit fixing hole 5.

[0022] A T-shaped groove 11 is provided on the rear cover plate. The T-shaped groove 11 is adapted to the T-shaped rotary tension pin 7. A clamping groove 15 and a reset hole 9 are provided on the front cover plate. The reset hole 9 is located below the clamping groove 15. The clamping groove and the T-shaped groove are used to limit the T-shaped rotary tension pin in a horizontal state. After installation, the clamping groove, the T-shaped groove, and the cross groove are connected. The reset hole is connected to the lower part of the cross groove and the lower part of the T-shaped groove. Since there is a lot of seabed silt when the sampling tool head samples, in order to prevent the silt from entering the box body and affecting the mechanical trigger device, a first mud guard cover plate 4 is installed on the rear cover plate corresponding to the T-shaped groove, and a second mud guard cover plate 13 is installed on the front cover plate corresponding to the clamping groove and the reset hole.

[0023] This embodiment also discloses a sediment sampling tool head, including a tool body 18 and a tool head 14, on which the mechanical trigger device of this embodiment is installed. There are two groups of mechanical trigger devices, and the two groups of mechanical trigger devices are circumferentially and evenly installed on the sediment sampling tool head. As Figure 5-6 shown, in this embodiment, there are two groups of mechanical trigger devices, and the two groups of mechanical trigger devices 19 are symmetrically installed on both sides of the sampling tool head.

[0024] The working principle of the mechanical trigger device of the present utility model is as follows: Before the sampling operation, the T-shaped rotary tension pin is toggled through the reset hole to make it in a horizontal state. At this time, the horizontal structure at the top of the T-shaped rotary tension pin is located in the T-shaped groove 11 of the rear cover plate, and the vertical structure is located in the clamping groove of the front cover plate, so that the tool body and the tool head are relatively fixed, and the locked state is as Figure 5 shown.

[0025] The T-shaped rotary tension pin is fixed in the cross-shaped groove of the tool body tension plate through the pin 8, enabling it to rotate around the pin. Both sides of the horizontal structure of the T-shaped rotary tension pin are provided with the first magnetic blocks 10. When the tool head is inserted into the sampling point, under the action of inertia, the tool head drives the box body to move upward, and the T-shaped rotary tension pin moves downward relative to the initial position. Since there is a second magnetic block 17 with the opposite polarity to the first magnetic block 10 on the cross-shaped groove corresponding to the lower part of the pin, at this time, the T-shaped rotary tension pin can rotate counterclockwise under the action of gravity and magnetism. Finally, the T-shaped rotary tension pin is in a vertical state. At this time, the tool body tension plate and the box body are unlocked, and the tool body tension plate can slide upward from the box body, and the tool head and the tool body can slide relative to each other. The open state is as shown in Figure 6 shown.

[0026] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A mechanical trigger device, characterized in that: It includes a knife body tension plate and a box body, one end of the knife body tension plate is installed on the knife body through the knife body fixing hole, and the other end is inserted into the box body, the box body is installed on the knife head, the knife body tension plate is provided with a cross groove at one end away from the knife body fixing hole, a T-shaped rotating tension pin rotating along the pin is provided in the cross groove, both ends of the top horizontal structure of the T-shaped rotating tension pin are provided with a first magnetic block, and the two sides of the cross groove corresponding to the pin below are provided with a second magnetic block, and the polarity of the first magnetic block is opposite to that of the second magnetic block; The box body includes a rear cover plate, a front cover plate, and a drill tension plate, wherein the drill tension plate is located between the rear cover plate and the front cover plate, a T-slot is provided on the rear cover plate, and the T-slot is adapted to the T-shaped rotating tension pin, and a clamping slot and a reset hole are provided on the front cover plate, wherein the reset hole is located below the clamping slot, and the clamping slot and the T-slot are used to limit the T-shaped rotating tension pin in a horizontal state, and after installation, the clamping slot, the T-slot and the cross groove are connected, and the reset hole is connected to the lower part of the cross groove and the lower part of the T-slot.

2. A mechanical trigger device according to claim 1, characterized in that: Mud guard covers are installed on the rear cover plate corresponding to the T-slot, and the front cover plate corresponding to the clamping slot and the reset hole.

3. A mechanical trigger device according to claim 1, characterized in that: A drill bit fixing hole is arranged at the bottom of the drill bit tension plate, and the box body is installed on the cutter head through the drill bit fixing hole.

4. A mechanical trigger device according to claim 1, characterized in that: The drill bit tension plate is a U-shaped plate, and the cutter body tension plate is inserted into the notch above the drill bit tension plate.

5. A large-caliber sediment sampling cutter head, comprising a cutter body and a cutter head, characterized in that: A mechanical trigger device as described in any one of claims 1 to 4 is installed, and two groups of the mechanical trigger device are provided. The two groups of the mechanical trigger device are symmetrically installed on the sediment sampling cutter head, and one end of the cutter body tension plate is installed on the cutter body through the cutter body fixing hole; a drill bit fixing hole is provided at the bottom of the drill bit tension plate, and the box body is installed on the cutter head through the drill bit fixing hole.

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