Drilling bucket structure and fishing device

Abstract

The utility model provides a drilling bucket structure and a fishing device, and relates to the technical field of rotary drilling rigs. The drilling bucket structure comprises a square hole, a drilling bucket body, a bottom door, a first locking mechanism and a second locking mechanism, the square hole is formed in the drilling bucket body and used for being connected with a drill rod square head in a matched mode. The bottom door is connected with the drilling bucket body; the bottom door has a closed state and an open state, and in the closed state, the bottom door and the square hole are oppositely arranged; the first locking mechanism and the second locking mechanism are connected with the square hole and the drilling bucket body respectively. According to the scheme, the first locking mechanism and the second locking mechanism are arranged on the drilling bucket, the problem that the bottom cover is opened due to the fact that the ejector rod of the drilling bucket is touched by mistake is effectively solved, the risk that the drilling bucket is clamped in a hole is reduced, the hole forming quality is improved, and the additional operation cost caused by fishing of the drilling bucket is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary drilling rig technical field, especially relates to a drill bucket structure and fishing device. BACKGROUND

[0002] Rotary drilling rig has been widely applied to pile foundation engineering, and the drill bucket as the accessory of rotary drilling rig has the vital role, the conventional drill bucket is composed of cylinder, bottom door, jib, pressure bar, connecting rod, hook etc., and the jib is the tool for opening the bottom door, when the drill bucket is hoisted, if the hole wall of drilling has stone falling or hole collapse, the jib is easily touched, the bottom cover is opened, and the drill bucket is stuck in the drilling. SUMMARY

[0003] The utility model discloses a drill bucket structure and fishing device to solve the problem of the drill bucket in related art that is easy to produce jib touch, and the bottom cover is opened.

[0004] In order to solve the above technical problem, the utility model adopts the following technical scheme:

[0005] The utility model discloses a drill bucket structure, which comprises:

[0006] Square hole, drill bucket body, bottom door, first locking mechanism and second locking mechanism;

[0007] The square hole is arranged on the drill bucket body, and the square hole is used for cooperating and connecting with the square head of the drill rod;

[0008] The bottom door is connected with the drill bucket body, and the bottom door has a closed state and an open state, and in the closed state, the bottom door is arranged opposite to the square hole;

[0009] The first locking mechanism and the second locking mechanism are connected with the square hole and the drill bucket body respectively;

[0010] In the case that the bottom door is in the closed state, the first locking mechanism is located at a first position, and the second locking mechanism is located at a second position;

[0011] When the first locking mechanism moves from the first position to a third position in the direction close to the bottom door, the first locking mechanism is in a first unlocking state;

[0012] When the first locking mechanism is in the first unlocking state, the second locking mechanism can move from the second position to a fourth position in the direction close to the bottom door, and when moving to the fourth position, the second locking mechanism is in a second unlocking state;

[0013] When the second locking mechanism is in the second unlocking state, the bottom door can be switched from the closed state to the open state.

[0014] Optionally, the first locking mechanism comprises:

[0015] A first locking top rod movably connected with the connecting rod outside the square hole;

[0016] A first locking pressure rod penetrating through the drill bucket body and fixedly connected with the first locking top rod;

[0017] A first locking spring sleeved on the first locking pressure rod and connected with the first locking top rod and the outer surface of the drill bucket body, respectively;

[0018] A first locking connecting rod and a first sliding rod located inside the drill bucket body, the first locking connecting rod being connected with the first locking pressure rod and the first sliding rod, respectively;

[0019] When the first locking spring is in an initial state, the first locking mechanism is located at the first position and is in a first locking state, and in the first locking state, the first locking connecting rod and the first sliding rod are in the same horizontal plane, and the first sliding rod is clamped on the second locking mechanism.

[0020] When the first locking top rod moves towards the bottom door, the first locking spring is compressed, the first locking connecting rod is driven to move, and when the first locking mechanism moves to the third position, the first sliding rod is driven to move away from the second locking mechanism, the first sliding rod is separated from the second locking mechanism, and the first locking mechanism is in a first unlocking state.

[0021] Optionally, the first locking mechanism further comprises:

[0022] A sliding block structure provided on the inner wall of the drill bucket body, and the first sliding rod penetrates through the sliding block structure.

[0023] Optionally, the second locking mechanism comprises:

[0024] A second locking top rod movably connected with the connecting rod;

[0025] A second locking pressure rod penetrating through the drill bucket body and fixedly connected with the second locking top rod;

[0026] A second locking spring sleeved on the second locking pressure rod and connected with the second locking pressure rod and the outer surface of the drill bucket body, respectively;

[0027] A first locking member is sleeved with the second locking press rod and arranged on the inner wall of the drill bucket body.

[0028] A second locking link and a locking hook are arranged inside the drill bucket body, the second locking link is connected with the second locking press rod and the locking hook respectively, and the locking hook is used for cooperating with a second locking member on the bottom door.

[0029] When the first locking spring is in an initial state, the first locking member is clamped with the first sliding rod; when the first locking mechanism moves from the first position to a third position in a direction close to the bottom door, the first locking member is separated from the first sliding rod.

[0030] When the second locking spring is in an initial state, the second locking mechanism is located at the third position, the second locking mechanism is in a second locking state, and the bottom door is in the closed state.

[0031] When the first locking mechanism is in a first unlocking state, the second locking press rod moves in a direction close to the bottom door, compresses the second locking spring, drives the second locking press rod to move, the second locking mechanism moves to the fourth position, the locking hook is separated from the second locking member, and the second locking mechanism is in a second unlocking state.

[0032] Optionally, the square hole comprises:

[0033] The first pin hole is perpendicular to the axis of the square hole.

[0034] The utility model embodiment provides a kind of fishing device, including the drill bucket structure as described above, still include: drill pipe square head and drill pipe;

[0035] The drill pipe square head is connected with the drill pipe and the drill bucket body respectively.

[0036] Optionally, the fishing device further comprises:

[0037] Pin body structure is arranged through the drill pipe square head, and the axis of the pin body structure is perpendicular to the axis of the drill pipe square head.

[0038] Optionally, the square hole comprises:

[0039] The first pin hole is perpendicular to the axis of the square hole;Wherein;The first pin hole is used for clamping the pin body structure.

[0040] Optionally, the pin body structure comprises:

[0041] First wedge, second wedge and elastic element;

[0042] The elastic element is fixedly connected with the first wedge block and the second wedge block, respectively.

[0043] The first wedge block and the second wedge block each comprise an inclined surface inclined towards the square hole.

[0044] Optionally, the square head of the drill rod comprises:

[0045] The limiting block structure and the second pin hole;

[0046] The limiting block structure protrudes from the bottom surface of the second pin hole;

[0047] The pin body structure is arranged in the second pin hole;

[0048] When the elastic element is in the original state, the first wedge block and the second wedge block are respectively abutted with the limiting block structure.

[0049] Optionally, the elastic element is fixedly connected with the first wedge block and the second wedge block by welding or bolt fastening.

[0050] The beneficial effects of the present application are as follows:

[0051] The drill bucket structure comprises a square hole, a drill bucket body, a bottom door, a first locking mechanism and a second locking mechanism. The square hole is arranged on the drill bucket body and is used for being connected with the square head of the drill rod. The bottom door is connected with the drill bucket body. The bottom door has a closed state and an open state. In the closed state, the bottom door is arranged opposite to the square hole. The first locking mechanism and the second locking mechanism are respectively connected with the square hole and the drill bucket body. The first locking mechanism and the second locking mechanism are arranged on the drill bucket. After the first locking mechanism is unlocked to the first unlocking state, the second locking mechanism can be operated. The second locking mechanism is used for locking and unlocking the bottom door, so as to switch between the closed state and the open state. The problem that the bottom cover is opened due to the misoperation of the drill bucket top rod is effectively solved. The risk of the drill bucket being stuck in the hole is reduced. The hole forming quality is improved. The additional operation cost caused by the drill bucket fishing is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 A structure schematic view of the drill bucket structure is shown.

[0053] Figure 2 A structure schematic view of the first locking mechanism in the first unlocking state is shown.

[0054] Figure 3 A structure schematic view of the second locking mechanism in the second unlocking state is shown.

[0055] Figure 4A structure schematic diagram of a fishing device provided by the embodiment of the utility model represents the structure schematic diagram of the fishing device provided by the embodiment of the utility model;

[0056] Figure 5 A structure schematic diagram of a fishing device provided by the embodiment of the utility model represents the structure schematic diagram of the fishing device provided by the embodiment of the utility model; Figure 4 An enlarged schematic view of the M area in the middle represents the enlarged schematic view of the M area in the middle;

[0057] Figure 6 A structure schematic diagram of a fishing device provided by the embodiment of the utility model represents the structure schematic diagram of the fishing device provided by the embodiment of the utility model;

[0058] Figure 7 A structure schematic diagram of a fishing device provided by the embodiment of the utility model represents the structure schematic diagram of the fishing device provided by the embodiment of the utility model;

[0059] Mark explanation:

[0060] Square hole 11;First pin hole 111;Drill bucket body 12;Bottom door 13;Second locking part 131;First locking mechanism 14;First locking top rod 141;First locking pressure rod 142;First locking spring 143;First locking connecting rod 144;First sliding rod 145;Sliding block structure 146;Second locking mechanism 15;Second locking top rod 151;Second locking pressure rod 152;Second locking spring 153;First locking part 154;Second locking connecting rod 155;Lock hook 156;Connecting rod 16;

[0061] Drill rod square head 2;Limiting block structure 21;Second pin hole 22;

[0062] Drill rod 3;

[0063] Pin body structure 4;First wedge block 41;Second wedge block 42;Elastic element 43;

[0064] Direction: X, Y, Z. Specific implementation

[0065] In order to make the technical problems, technical schemes and advantages of the utility model clearer, the following will be described in detail in combination with the drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help understand the embodiments of the utility model. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the utility model. In addition, in order to be clear and concise, the description of known functions and structures is omitted.

[0066] It should be appreciated that any reference to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearance of the phrase "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment. In addition, the features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0067] Referring to Figure 1 The application provides a drill bucket structure, comprising: a square hole 11, a drill bucket body 12, a bottom door 13, a first locking mechanism 14 and a second locking mechanism 15.

[0068] The square hole 11 is arranged on the drill bucket body 12; here, the square hole 11 can be used for subsequent cooperation and connection with the square head of the drill rod of the rotary drilling rig;

[0069] The bottom door 13 is connected with the drill bucket body 12; the bottom door 13 has a closed state and an open state, and in the closed state, the bottom door 13 is arranged opposite to the square hole 11;

[0070] The first locking mechanism 14 and the second locking mechanism 15 are respectively connected with the square hole 11 and the drill bucket body 12;

[0071] Wherein, when the bottom door 13 is in the closed state, the first locking mechanism 14 is located at a first position, and the second locking mechanism 15 is located at a second position;

[0072] When the first locking mechanism 14 moves from the first position to a third position in a direction close to the bottom door 13, the first locking mechanism 14 is in a first unlocking state;

[0073] When the first locking mechanism 14 is in the first unlocking state, the second locking mechanism 15 can move from the second position to a fourth position in a direction close to the bottom door 13, and when moving to the fourth position, the second locking mechanism 15 is in a second unlocking state;

[0074] When the second locking mechanism 15 is in the second unlocking state, the bottom door 13 can be switched from the closed state to the open state.

[0075] In the embodiment of the present application, the drill bucket structure comprises a square hole 11, a drill bucket body 12, a bottom door 13, a first locking mechanism 14 and a second locking mechanism 15. The shape of the square hole 11 is matched with the shape of the drill bucket body 12. The square hole 11 is connected with the drill bucket body 12, and the connection of the drill rod 3 and the drill bucket body 12 can be realized. The drill bucket body 12 can be a cylindrical structure. The drill bucket body 12 has oppositely arranged top and bottom ends. The square hole 11 is arranged at the top end of the drill bucket body 12. The bottom door 13 is arranged at the bottom end of the drill bucket body 12. The bottom door 13 is rotatably connected with the drill bucket body 12. The bottom door 13 has a closed state and an open state. In the closed state, the bottom door 13 is arranged opposite to the square hole 11, and the bottom door 13 is hingedly fixed with the drill bucket body 12.

[0076] The first locking mechanism 14 is arranged on the drill bucket body 12. When the first locking mechanism 14 is located at the first position, which can also be the initial state of the first locking mechanism 14, the first locking mechanism 14 is in the first locking state. The first locking state is used for the first locking mechanism 14 to lock the second locking mechanism 15, so as to fix the second locking mechanism 15. When the first locking mechanism 14 moves to the third position in the direction close to the bottom door 13, the first locking mechanism 14 is in the first unlocking state. In the case that the first locking mechanism 14 is in the first unlocking state, the second locking mechanism 15 can move. In the first unlocking state, the second locking mechanism 15 can move from the second position to the fourth position in the direction close to the bottom door 13 to realize the unlocking of the second locking mechanism 15, so that the second locking mechanism 15 is in the second unlocking state. In the second unlocking state, the bottom door 13 can be switched from the closed state to the open state.

[0077] The scheme of the present application is arranged on the drill bucket. After the first locking mechanism is unlocked to the first unlocking state, the second locking mechanism can be operated. The second locking mechanism is used to lock and unlock the bottom door, so as to switch the bottom door between the closed state and the open state. The problem that the bottom cover is opened due to the false touch of the drill bucket top rod is effectively solved. The risk of the drill bucket being stuck in the hole is reduced. The hole forming quality is improved. The additional operation cost caused by the drill bucket fishing is reduced.

[0078] Referring to FIGS. 1 to 5, Figure 2 and Figure 3 The first locking mechanism 14 comprises:

[0079] A first locking top rod 141 is movably connected with the connecting rod 16 outside the square hole 11;

[0080] A first locking pressing rod 142 penetrates through the drill bucket body 12 and is fixedly connected with the first locking top rod 141;

[0081] A first locking spring 143 is sleeved on the first locking pressure rod 142 and connected with the first locking top rod 141 and the outer surface of the bucket body 12 respectively;

[0082] A first locking connecting rod 144 and a first sliding rod 145 are located inside the bucket body 12, and the first locking connecting rod 144 is connected with the first locking pressure rod 142 and the first sliding rod 145 respectively;

[0083] When the first locking spring 143 is in the initial state, the first locking mechanism 14 is located at the first position, and the first locking mechanism 14 is in the first locking state; in the first locking state, the first locking connecting rod 144 and the first sliding rod 145 are in the same horizontal plane, and the first sliding rod 145 is clamped on the second locking mechanism 15;

[0084] When the first locking top rod 141 moves towards the bottom door 13, the first locking spring 143 is compressed, the first locking connecting rod 144 is driven to move, and when the first locking mechanism 14 moves to the third position, the first sliding rod 145 is driven to move away from the second locking mechanism 15, the first sliding rod 145 is separated from the second locking mechanism 15, and the first locking mechanism 14 is in the first unlocking state.

[0085] In the embodiment, when the first locking spring 143 is in the initial state, the first locking mechanism 14 is located at the first position, and the first locking mechanism 14 is in the first locking state, referring to Figure 1 , the first locking mechanism 14 is in the first locking state, Figure 2 , the first locking top rod 141 moves along the X1 direction, the first locking spring 143 is compressed along the X1 direction, the first locking pressure rod 142 is driven to move to the third position, the first locking connecting rod 144 drives the first sliding rod 145 to move along the X2 direction, and moves to Figure 2 , the first unlocking state, the first locking mechanism 14 moves along the X1 direction, and the unlocking of the first locking mechanism 14 is realized. After the first locking mechanism 14 is unlocked, the second locking mechanism 15 is still located at the second position, that is, the second locking mechanism 15 is still in the second locking state, but the second locking mechanism 15 can move to be unlocked, at this time, the second locking mechanism 15 is separated from the locking of the first locking mechanism 14. Specifically, when the first locking mechanism 14 is in the first unlocking state, the second locking mechanism 15 moves from the second position to the fourth position towards the bottom door 13, and then the unlocking of the second locking mechanism 15 can be realized.

[0086] It should be noted that the connecting rod 16 can be a horizontal rod structure with a circular ring, the first locking top rod 141 is sleeved in the corresponding circular ring, which can play a positioning role on the first locking top rod 141, and the second locking top rod 151 in the second locking mechanism 15 is also positioned in the same way.

[0087] Further, the first locking mechanism 14 further comprises:

[0088] The sliding block structure 146 is arranged on the inner wall of the drill bucket body 12, and the first sliding rod 145 penetrates the sliding block structure 146.

[0089] In the embodiment of the application, the sliding block structure 146 is arranged on the inner wall of the drill bucket body 12 and located at the top side of the inner wall of the drill bucket body 12, the sliding block structure 146 is provided with a sliding groove, and part of the structure of the first sliding rod 145 is arranged in the sliding groove of the first sliding rod 145, which plays a guiding and positioning role on the movement of the first sliding rod 145.

[0090] Optionally, the connecting end of the first sliding rod 145 and the second locking mechanism 15 can include a slope extending away from the second locking mechanism 15.

[0091] Continuing to refer to Figure 2 and Figure 3 The second locking mechanism 15 comprises:

[0092] The second locking top rod 151 is movably connected with the connecting rod 16.

[0093] The second locking pressure rod 152 penetrates the drill bucket body 12 and is fixedly connected with the second locking top rod 151.

[0094] The second locking spring 153 is sleeved on the second locking pressure rod 152 and connected with the second locking pressure rod 152 and the outer surface of the drill bucket body 12 respectively.

[0095] The first locking piece 154 is sleeved on the second locking pressure rod 152 and arranged on the inner wall of the drill bucket body 12.

[0096] The second locking connecting rod 155 and the lock hook 156 are located inside the drill bucket body 12, the second locking connecting rod 155 is connected with the second locking pressure rod 152 and the lock hook 156 respectively, and the lock hook 156 is used for cooperating with the second locking piece 131 on the bottom door 13.

[0097] When the first locking spring 143 is in the initial state, the first locking member 154 is in engagement with the first slide rod 145; when the first locking mechanism 14 moves from the first position to the third position in the direction close to the bottom door 13, the first locking member 154 is separated from the first slide rod 145;

[0098] When the second locking spring 153 is in the initial state, the second locking mechanism 15 is in the third position, the second locking mechanism 15 is in the second locking state, and the bottom door 13 is in the closed state;

[0099] When the first locking mechanism 14 is in the first unlocking state, the second locking pressure rod 152 moves in the direction close to the bottom door 13, compresses the second locking spring 153, drives the second locking pressure rod 152 to move, the second locking mechanism 15 moves to the fourth position, the locking hook 156 is separated from the second locking member 131, and the second locking mechanism 15 is in the second unlocking state.

[0100] In the embodiment, after the first locking top rod 141 of the first locking mechanism 14 moves in the X1 direction, the first slide rod 145 of the first locking mechanism 14 is driven to move in the X2 direction, and moves to the first unlocking state of the first locking mechanism 14 shown in the figure. Figure 2 At this time, the second locking top rod 151 can move in the Y direction to compress the second locking spring 153, the second locking pressure rod 152 drives the second locking connecting rod 155 to move in the Y direction, and moves to the state that the locking hook 156 is separated from the second locking member 131, and the second locking mechanism 15 is in the second unlocking state. At this time, the bottom door 13 can move in the Z direction to realize the opening state of the bottom door 13. Figure 1

[0101] In a specific implementation mode, when the bottom door 13 of the drill bucket needs to be unlocked and opened, the power head lower pressing disc (not shown in the figure) will first contact the first locking top rod 141 of the first locking mechanism 14, the first locking spring 143 is compressed, the first locking pressure rod 142 drives the first locking connecting rod 144 to move, so that the first slide rod 145 moves in the X2 direction to complete the first unlocking.

[0102] When the power head lower pressing disc (not shown in the figure) continues to contact the second locking top rod 151 downward, the second locking spring 153 is compressed, the second locking pressure rod 152 drives the upper hinge point of the second locking connecting rod 155 to move downward, the second locking connecting rod 155 presses the left hinge point of the locking hook 156 downward, so that the locking hook 156 rotates to complete the second unlocking, and the bottom door 13 can be rotated and opened in the Z direction.

[0103] ​Optionally, the height of the first locking top rod 141 is greater than the height of the second locking top rod 151, and by using the height difference between the first locking top rod 141 and the second locking top rod 151, the first locking mechanism 14 can be unlocked in two stages by simultaneously pressing the first locking top rod 141 and the second locking top rod 151 after the first locking top rod 141 is pressed to unlock the first locking mechanism 14, without the need to press them separately.

[0104] Optionally, referring to Figure 1 As shown in the figure, the square hole 11 includes:

[0105] The first pin hole 111 has an axis perpendicular to the axis of the square hole 11; wherein the first pin hole 111 is used to clamp the pin body structure 4.

[0106] The drill rig involved in the present application has a two-stage bottom door locking structure, and only when the first locking top rod of the first locking mechanism is pressed to be flush with the second locking top rod of the second locking mechanism, the second locking top rod of the second locking mechanism can be pressed down until the bottom door is unlocked, and pressing any top rod alone cannot open the bottom door.

[0107] The drill rig of the present application effectively solves the problem of opening the bottom cover caused by accidental contact of the drill rig top rod, reduces the risk of jamming of the drill rig in the hole, improves the quality of hole forming, and reduces the additional operation cost caused by fishing of the drill rig.

[0108] Referring to Figure 4 As shown in the figure, the present application embodiment also provides a fishing device, which includes the drill rig structure as described in Figures 1 to 3 The drill rig structure also includes a square head 2 of a drill rod 3 and a drill rod 3.

[0109] The square head 2 of the drill rod is connected with the drill rod 3 and the drill rig body 12 respectively.

[0110] In the present application embodiment, the fishing device includes a drill rod 3, a square head 2 of the drill rod 3, and the square head 2 is a component for connecting with the drill rig body 12. The drill rod 3 can be provided with a plurality of section rods (not shown in the figure) arranged in sequence from top to bottom, and the lengths of the section rods extend in the top-to-bottom direction.

[0111] It should be known that rotary drilling rigs have been widely used in pile foundation projects. However, the drill bucket may occasionally fall during operation. Since the position of each hole in the project is carefully designed, when the drill bucket falls, it needs to be salvaged. Common salvage methods include manual salvage, barrel drill salvage, chain salvage, multi-claw salvage, etc. However, manual salvage has poor visibility in the hole. If a collapsed hole is encountered, the salvage worker may even be in danger of his life. The success rate of barrel drill salvage is difficult to guarantee, and improper operation may cause certain damage to the hole. Chain salvage and multi-claw salvage can only be pulled up vertically, and the drill bucket cannot be rotated. For the problems encountered during the salvage process, refer to Figure 4 and Figure 5 As shown, the salvage device of the present application further includes:

[0112] The pin structure 4 is disposed through the drill rod square head 2 , and the axis L1 of the pin structure 4 is perpendicular to the axis L2 of the drill rod square head 2 .

[0113] Furthermore, the square hole 11 includes:

[0114] The first pin hole 111 , the axis of the first pin hole 111 (parallel to the direction L1 ) is perpendicular to the axis of the square hole 11 (parallel to the direction L2 ); wherein; the first pin hole 111 is used to clamp the pin body structure 4 .

[0115] In the embodiment of this application, Figure 5 yes Figure 4 In the enlarged diagram of the middle M area, the axis of the pin structure 4 is perpendicular to the axis of the drill pipe square head 2, and the axis of the first pin hole 111 is perpendicular to the axis of the square hole 11. The shapes of the first pin hole 111 and the pin structure 4 are mutually compatible. After the pin structure 4 and the first pin hole 111 are engaged, the connection between the drill pipe square head 2 and the drill bucket body 12 is completed.

[0116] Further, refer to Figures 5 to 7 As shown, the pin body structure 4 includes:

[0117] A first wedge block 41, a second wedge block 42 and an elastic element 43;

[0118] The elastic element 43 is fixedly connected to the first wedge block 41 and the second wedge block 42 respectively;

[0119] The first wedge block 41 and the second wedge block 42 both include inclined surfaces inclined toward the direction approaching the square hole 11 .

[0120] Optionally, the drill pipe square head 2 includes:

[0121] The limiting block structure 21 and the second pin hole 22;

[0122] The limit block structure 21 protrudes the bottom surface of the second pin hole 22;

[0123] The pin body structure 4 is arranged in the second pin hole 22;

[0124] Wherein, when the elastic element 43 is in the original state, the first wedge-shaped block 41 and the second wedge-shaped block 42 are respectively connected with the limit block structure 21.

[0125] In this application, the second pin hole 22 has an upper inner wall and a lower inner wall. Along the compression direction of the elastic element 43 (parallel to the axis L1 direction of the pin body structure 4), the end with the largest cross section of the first wedge-shaped block 41 and the second wedge-shaped block 42 abuts against the upper inner wall, and the end with the smallest cross section abuts against the lower inner wall. Here, the first wedge-shaped block 41 and the second wedge-shaped block 42 are respectively provided with a groove matched with the protruding limit block structure 21.

[0126] In the embodiment of the application, the first wedge-shaped block 41 and the second wedge-shaped block 42 both have two ends, one end connected with the elastic element 43 is a flat surface, and the other end exposed outside the square head 2 of the drill rod is an inclined surface, which is inclined towards the direction close to the square hole 11. The diameters of the first wedge-shaped block 41 and the second wedge-shaped block 42 are the same as the diameters of the first pin hole 111 and the second pin hole 22 of the rotary excavator.

[0127] Optionally, the elastic element 43 is fixedly connected with the first wedge-shaped block 41 and the second wedge-shaped block 42 by welding or bolt fastening.

[0128] The elastic element 43 is preferably a spring, and can also be made of rubber or other materials. The selected spring should be selected according to the size of the drill bucket and stress calculation, and should ensure that the spring has sufficient stiffness to ensure the overall stability of the fishing device and the need for lifting and rotating during the fishing process, and has sufficient elastic modulus to ensure that the fishing device can generate sufficient force to cut off the positioning pin shaft during the process of pressing into the drill bucket.

[0129] The inclined surface of the two wedge-shaped blocks cooperates with the chamfered inclined surface of the drill bucket, which makes it easier for the drill rod to press into the drill tool together with the fishing device; the first pin hole 111 functions to fix the fishing device, and the material is selected to be able to cut off under a certain force, ensuring that the drill rod is smoothly pressed into the drill tool.

[0130] In a specific implementation, two inclined surfaces are added in the second pin hole 22, namely the first wedge 41 and the second wedge 42, and the middle of the first wedge 41 and the second wedge 42 is provided with an elastic element 43, which ensures that the first wedge 41 and the second wedge 42 can retract when being pressed, and the retraction can make the first wedge 41 and the second wedge 42 approach each other, and the elastic element 43 can pop out when not being pressed, and a limiting block structure 21 is added to ensure that the first wedge 41 and the second wedge 42 will not fall off during the process of popping out.

[0131] Further, after the rotary drilling rig hoists the drill pipe 3 to the center of the square hole 11 of the drill bucket body 12, the drill pipe 3 is lowered; when the bottom end of the drill pipe square head 2 of the drill pipe 3 contacts the top end of the square hole 11 of the drill bucket body 12, the rotary drilling rig is controlled to rotate the drill pipe 3 until the drill pipe square head 2 of the drill pipe 3 is inserted into the square hole 11, and the rotary drilling rig is continuously controlled to lower the drill pipe 3 until the bottom; the rotary drilling rig is controlled to slowly lift the drill pipe, and when the first wedge 41 and the second wedge 42 reach the position of the first pin hole 111 of the drill bucket body 12, they pop out under the action of the elastic element 43, thereby connecting the drill pipe 3 and the drill bucket body 12. According to needs, composite actions such as rotation and lifting are performed to realize drill bucket fishing.

[0132] The present application sets the pin body structure 4, which is simple in structure modification, safe and convenient in fishing process, simple in operation, and can realize composite actions such as rotation and lifting.

[0133] In summary, the scheme of the present application sets the first locking mechanism and the second locking mechanism on the drill bucket, and the second locking mechanism is used for locking and unlocking the bottom door to switch between the closed state and the open state, effectively solving the problem of the bottom cover opening due to the drill bucket top rod being accidentally touched, reducing the risk of the drill bucket being stuck in the hole, improving the hole forming quality, and reducing the additional operation cost caused by drill bucket fishing.

[0134] The pin body structure of the present application is simple, reasonable and novel in design, easy to operate, has a high fishing success rate, can efficiently and quickly fish out the drill pipe when the drill pipe of the rotary drilling rig falls into mud or other invisible environment, will not damage the precision of the cooperation surface of the equipment itself, will not damage the equipment and the drill pipe, can fish out the drill pipe at one time, and will not have too much impact on subsequent construction.

[0135] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as limiting the utility model.

[0136] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0137] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0138] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0139] The above is the preferred embodiment of the utility model, and it should be pointed out that for ordinary personnel in the technical field, without departing from the principle of the utility model, a number of improvements and refinements can be made, which are also within the protection scope of the utility model.

Claims

1. A drilling bucket structure, characterized in that: include: A square hole (11), a drill bucket body (12), a bottom door (13), a first locking mechanism (14) and a second locking mechanism (15); The square hole (11) is provided on the drill bucket body (12); The bottom door (13) is connected to the drill bucket body (12); the bottom door (13) has a closed state and an open state, and in the closed state, the bottom door (13) is arranged opposite to the square hole (11); The first locking mechanism (14) and the second locking mechanism (15) are respectively connected to the square hole (11) and the drill bucket body (12); Wherein, when the bottom door (13) is in the closed state, the first locking mechanism (14) is located in a first position, and the second locking mechanism (15) is located in a second position; When the first locking mechanism (14) moves from the first position toward the direction close to the bottom door (13) to a third position, the first locking mechanism (14) is in a first unlocked state; When the first locking mechanism (14) is in the first unlocked state, the second locking mechanism (15) can move from the second position toward the direction close to the bottom door (13) to a fourth position, and when moving to the fourth position, the second locking mechanism (15) is in the second unlocked state; When the second locking mechanism (15) is in the second unlocked state, the bottom door (13) can be switched from the closed state to the open state.

2. The drilling bucket structure according to claim 1, characterized in that: The first locking mechanism (14) comprises: A first locking push rod (141) is movably connected to a connecting rod (16) outside the square hole (11); A first locking pressure rod (142) passes through the drill bucket body (12) and is fixedly connected to the first locking push rod (141); A first locking spring (143) is sleeved on the first locking pressure rod (142) and is respectively connected to the first locking push rod (141) and the outer surface of the drill bucket body (12); A first locking link (144) and a first slide bar (145) are located inside the drill bucket body (12), wherein the first locking link (144) is connected to the first locking pressure rod (142) and the first slide bar (145) respectively; Wherein, when the first locking spring (143) is in the initial state, the first locking mechanism (14) is located at the first position, and the first locking mechanism (14) is in the first locking state; in the case of the first locking state, the first locking link (144) and the first sliding rod (145) are located on the same horizontal plane, and the first sliding rod (145) is clamped with the second locking mechanism (15); The first locking push rod (141) moves toward the bottom door (13), compresses the first locking spring (143), and drives the first locking link (144) to move. When the first locking mechanism (14) moves to the third position, it drives the first sliding rod (145) to move away from the second locking mechanism (15). The first sliding rod (145) is separated from the second locking mechanism (15), and the first locking mechanism (14) is in the first unlocked state.

3. The drilling bucket structure according to claim 2, characterized in that: The first locking mechanism (14) further comprises: A slider structure (146) is provided on the inner wall of the drill bucket body (12), and the first slide rod (145) passes through the slider structure (146).

4. The drilling bucket structure according to claim 2, characterized in that: The second locking mechanism (15) comprises: A second locking push rod (151) is movably connected to the connecting rod (16); A second locking pressure rod (152) passes through the drill bucket body (12) and is fixedly connected to the second locking push rod (151); a second locking spring (153) sleeved on the second locking pressure rod (152) and connected to the second locking pressure rod (152) and the outer surface of the drill bucket body (12) respectively; A first locking member (154) is sleeved on the second locking pressure rod (152) and is arranged on the inner wall of the drill bucket body (12); A second locking link (155) and a locking hook (156) are located inside the drill bucket body (12), wherein the second locking link (155) is connected to the second locking pressure rod (152) and the locking hook (156) respectively; the locking hook (156) is used to cooperate with the second locking member (131) on the bottom door (13); Wherein, when the first locking spring (143) is in an initial state, the first locking member (154) is engaged with the first slide bar (145); when the first locking mechanism (14) moves from the first position toward the direction close to the bottom door (13) to a third position, the first locking member (154) is separated from the first slide bar (145); When the second locking spring (153) is in the initial state, the second locking mechanism (15) is located at the third position, the second locking mechanism (15) is in the second locking state, and the bottom door (13) is in the closed state; When the first locking mechanism (14) is in the first unlocked state, the second locking pressure rod (152) moves toward the bottom door (13), compressing the second locking spring (153), driving the second locking pressure rod (152) to move, and the second locking mechanism (15) moves to the fourth position, so that the lock hook (156) is separated from the second locking member (131), and the second locking mechanism (15) is in the second unlocked state.

5. The drilling bucket structure according to claim 1, characterized in that: The square hole (11) comprises: A first pin hole (111), wherein the axis of the first pin hole (111) is perpendicular to the axis of the square hole (11).

6. A salvage device, characterized in that: The drill bucket structure comprises the drill bucket structure according to any one of claims 1 to 4, further comprising: a drill rod square head (2) and a drill rod (3); The drill rod square head (2) is connected to the drill rod (3) and the drill bucket body (12) respectively.

7. The salvage device according to claim 6, characterized in that: The salvaging device further comprises: The pin body structure (4) is arranged to pass through the drill rod square head (2), and the axis of the pin body structure (4) is perpendicular to the axis of the drill rod square head (2).

8. The salvage device according to claim 7, characterized in that: The pin body structure (4) comprises: A first wedge-shaped block (41), a second wedge-shaped block (42) and an elastic element (43); The elastic element (43) is fixedly connected to the first wedge block (41) and the second wedge block (42) respectively; The first wedge-shaped block (41) and the second wedge-shaped block (42) both include inclined surfaces inclined toward a direction approaching the square hole (11).

9. The salvage device according to claim 8, characterized in that: The drill pipe square head (2) comprises: A limit block structure (21) and a second pin hole (22); The limiting block structure (21) is arranged to protrude from the bottom surface of the second pin hole (22); The pin body structure (4) is arranged in the second pin hole (22); Wherein, when the elastic element (43) is in an original state, the first wedge block (41) and the second wedge block (42) are respectively abutted against the limit block structure (21).

10. The salvaging device according to claim 8, characterized in that: The elastic element (43) is respectively fixedly connected to the first wedge block (41) and the second wedge block (42) by welding or bolt fastening.

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