Unlocking mechanism, drill bucket and drilling machine

Abstract

The present invention provides an unlocking mechanism, a drill bucket and a drilling rig, wherein the unlocking mechanism comprises: a frame, a shifting block, a swinging block, a disengaging driving member and a resetting assembly. The frame is slidably connected to the drill top of the drill bucket, and is suitable for pressing the unlocking connecting rod when the frame slides downward; the shifting block is suitable for lifting and lowering with the bulldozer mechanism; at least two swinging blocks are arranged at intervals along the length direction of the frame, and the swinging block has a first state located on the lifting path of the shifting block and a second state moved away from the lifting path of the shifting block; the disengaging driving member is suitable for driving the swinging block to switch to the second state when in contact with the swinging block; and the resetting assembly is suitable for continuously providing the swinging block with an elastic force for switching to the first state. With the unlocking mechanism, the drill bucket and the drilling rig provided by the present invention, the drilling rig pressure plate and the bulldozer mechanism do not need to be restored to the highest position every time soil is taken, and can cooperate with the shifting block on the bulldozer mechanism at different positions, so that the use is more flexible, and the purpose of adjusting the downward pressure stroke of the bulldozer mechanism is achieved.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] The present invention claims priority to Chinese Patent Application No. 202110572179.8, entitled “Unlocking Mechanism, Drill Bucket and Drilling Machine”, filed on May 25, 2021. The entire contents of the above application are fully incorporated into the present invention by reference. Technical Field

[0003] The present invention relates to the technical field of construction machinery, and in particular to an unlocking mechanism, a drill bucket and a drilling machine. Background Art

[0004] At present, rotary drilling rigs are widely used in pile foundation construction. The existing small-diameter sand bucket is difficult to unload soil during construction in clay layers, and it takes a long time to unload soil, which seriously affects the drilling efficiency. Using an open-body drill bucket to throw soil through rotary impact will produce a lot of noise, making it impossible to construct near residential areas. In addition, forward and reverse rotation will increase energy consumption, and impact vibration will also affect the life of the drill rig.

[0005] Although some existing drill buckets can realize the function of driving the push-down mechanism to operate to open the drill bottom bucket door when the power head of the drill rig moves downward, this type of drill bucket requires the drill bucket push plate to be hinged to the power head of the drill rig, and the push plate is reset by a reset spring. The drill bucket push plate needs to fully return to the highest position before the drill bottom bucket door can be opened again, resulting in a fixed downward pressure stroke of the drill bucket push plate, which cannot be changed according to the amount of soil input. Summary of the invention

[0006] The invention provides an unlocking mechanism, a drill bucket and a drilling machine, which are used to solve the problem in the prior art that a bottom bucket door of a drill bucket is difficult to open, thus affecting construction efficiency.

[0007] The present invention provides an unlocking mechanism, comprising:

[0008] A frame body, slidably connected to the drill head of the drill bucket, and adapted to press the unlocking connecting rod when the frame body slides downward;

[0009] A shifting block is arranged on the bulldozer mechanism and is suitable for rising and falling with the bulldozer mechanism;

[0010] A swing block is arranged on the frame, at least two of the swing blocks are arranged at intervals along the length direction of the frame, the swing block has a first state of being located on the lifting path of the shift block and a second state of being moved away from the lifting path of the shift block, and the swing block is suitable for switching between the first state and the second state;

[0011] a disengagement driving member, disposed below the swing block, adapted to drive the swing block to switch to the second state when in contact with the swing block;

[0012] A reset assembly is connected to the swing block and is suitable for continuously providing an elastic force for the swing block to switch to the first state.

[0013] According to an unlocking mechanism provided by the present invention, the reset assembly includes a connecting rod and an elastic reset member, the connecting rod is rotatably connected to each of the swing blocks and the elastic reset member respectively, and the end of the elastic reset member facing away from the connecting rod is rotatably connected to the frame.

[0014] According to an unlocking mechanism provided by the present invention, the elastic reset member includes a telescopic rod and a reset spring, one end of the telescopic rod is rotatably connected to the connecting rod, and the other end is rotatably connected to the frame, and the reset spring is sleeved on the telescopic rod.

[0015] According to an unlocking mechanism provided by the present invention, the disengagement driving member is a limit block, and an inclined surface is formed on the limit block, which gradually moves away from the swing stopper and the transfer shaft of the frame from bottom to top.

[0016] According to an unlocking mechanism provided by the present invention, a side of the swing stopper close to the limit block is a curved surface structure.

[0017] The present invention also provides a drilling bucket, comprising a drill body, a drill bottom bucket door, a drill top, a bulldozer mechanism, a locking piece, an unlocking connecting rod and the unlocking mechanism described in any one of the above, wherein the drill bottom bucket door is hinged to the bottom of the drill body; the drill top is arranged at the top of the drill body; the bulldozer mechanism is slidably connected to the drill top and one end is located in the drill body; the locking piece is suitable for locking the drill bottom bucket door; the unlocking connecting rod is slidably connected to the drill top and is suitable for driving the locking piece to unlock.

[0018] According to a drilling bucket provided by the present invention, the frame body is arranged in parallel with the unlocking link, a pressing portion is arranged at the top end of the frame body, and the pressing portion is located at the upper end of the unlocking link.

[0019] According to a drill bucket provided by the present invention, the bulldozer mechanism includes a pressure plate, a push rod and a bulldozer plate, the pressure plate is located outside the drill body, one end of the push rod is connected to the pressure plate, and the other end is connected to the bulldozer plate, the push rod is slidably connected to the drill top, the bulldozer plate is slidably arranged in the drill body, and a protrusion is arranged on the side of the bulldozer plate away from the push rod.

[0020] According to a drilling bucket provided by the present invention, a one-way air hole is arranged on the bulldozer plate, a one-way valve plate is slidably connected to the side of the bulldozer plate away from the push rod, and the one-way valve plate is suitable for covering the one-way air hole.

[0021] The present invention also provides a drilling rig, which comprises the unlocking mechanism described in any one of the above items or the drilling bucket described in any one of the above items.

[0022] The unlocking mechanism, drill bucket and drilling rig provided by the present invention set the shifting block on the bulldozer mechanism. When the drill rig pressure plate drives the bulldozer mechanism to move, the shifting block on the bulldozer mechanism can press down the swinging block, thereby driving the frame to move and realize unlocking; after unlocking, the shifting block is separated from the swinging block under the action of the disengagement drive member to prevent the swinging block from affecting the continued downward movement of the bulldozer mechanism. In this process, the drill bottom bucket door can be opened in time to unload the soil, realizing the continuous action of opening the drill bottom bucket door first and then unloading the soil, eliminating the problem of loud noise caused by rotating impact and throwing away the soil, and construction can be carried out at night near residential areas. In addition, the throwing away of soil can be omitted, reducing the energy consumption of the drilling rig, and the lack of impact vibration can extend the life of the drilling rig parts.

[0023] The unlocking mechanism, drill bucket and drilling rig provided by the present invention do not need to connect the unlocking structure to the drilling rig pressure plate, so that the drilling rig pressure plate and the bulldozer mechanism do not need to be restored to the highest position every time soil is taken. In addition, since at least two swing blocks are provided, they can cooperate with the shifting blocks on the bulldozer mechanism at different positions, which makes the use more flexible and achieves the purpose of adjusting the downward pressure stroke of the bulldozer mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the unlocking mechanism provided by the present invention;

[0026] Figure 2 It is a structural schematic diagram of the drill bucket provided by the present invention;

[0027] Figure 3 It is a structural schematic diagram of the bulldozer mechanism in the drill bucket provided by the present invention.

[0028] Reference numerals:

[0029] 100. bulldozer mechanism; 110. pressure plate; 120. push rod;

[0030] 130. Bulldozer plate; 131. One-way air vent; 132. One-way valve plate;

[0031] 133, protrusion; 200, drill body; 300, drill top;

[0032] 310, guide sleeve; 400, bottom drilling bucket door; 510, frame;

[0033] 511, pressing portion; 520, connecting rod; 530, swing stopper;

[0034] 540, return spring; 550, shift block; 560, limit block;

[0035] 570, telescopic rod; 610, unlocking connecting rod; 620, locking spring;

[0036] 630. Doumen hook. DETAILED DESCRIPTION

[0037] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0040] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0042] Combine the following Figure 1 and Figure 2 The unlocking mechanism of the embodiment of the present invention is described, and the unlocking mechanism includes: a frame 510, a shift block 550, a swing block 530, a disengagement drive member, and a reset assembly. The frame 510 is vertically slidably connected to the drill top 300 of the drill bucket, and when the frame 510 slides downward, it is suitable for pressing the unlocking link 610, thereby driving the unlocking link 610 to slide downward to unlock, so that the bottom bucket door 400 of the drill bucket is automatically opened under the influence of gravity, so as to facilitate unloading of soil.

[0043] The shifting block 550 is arranged on the bulldozer mechanism 100 and is suitable for rising and falling with the bulldozer mechanism 100. When it is necessary to unload soil, the power head of the drilling rig drives the bulldozer mechanism 100 to move downward. At this time, the shifting block 550 moves synchronously with the bulldozer mechanism 100.

[0044] The swing block 530 is disposed on the frame 510 and is rotatably connected to the frame 510. The swing block 530 has a first state in which it is located on the lifting path of the shift block 550 and a second state in which it is moved away from the lifting path of the shift block 550. The swing block 530 is suitable for switching between the first state and the second state. In the first state, the shift block 550 can act on the swing block 530 during the downward movement, and then the frame 510 is driven downward by the swing block 530 to achieve the unlocking operation; in the second state, the swing block 530 moves away from the lifting path of the shift block 550, so that the shift block 550 can continue to rise and fall with the bulldozer mechanism 100 to complete the drilling and unloading work.

[0045] At least two swing blocks 530 are arranged at intervals along the length direction of the frame 510, so that the shift block 550 can cooperate with different swing blocks 530 at different heights, so that the shift block 550 and the bulldozer mechanism 100 can be unlocked without being raised to the highest position. In this way, the bulldozer mechanism 100 does not need to be fixedly connected to the power head of the drilling rig. During the drilling process of the drill bucket, the slag gradually fills the drill bucket, which can push the bulldozer mechanism 100 to move upward. The different amounts of soil fed cause the shift block 550 to move upward to different swing blocks 530, so that the stroke of the bulldozer mechanism 100 can be changed according to the amount of soil fed.

[0046] The disengagement driving member is arranged below the swing block 530, and is suitable for driving the swing block 530 to switch to the second state when it contacts the swing block 530, so that after the shift block 550 drives the swing block 530 and the frame 510 to move downward and complete the unlocking, the swing block 530 is disengaged from the shift block 550, thereby preventing the swing block 530 from blocking the shift block 550 and the bulldozer mechanism 100 from continuing to move downward to unload soil.

[0047] The reset assembly is connected to the swing block 530, and is suitable for continuously providing an elastic force for the swing block 530 to switch to the first state. When the swing block 530 is switched to the second state by the disengagement drive member, and the shift block 550 passes the swing block 530 with the bulldozer mechanism 100, the reset assembly can switch the swing block 530 back to the first state in time, and prepare for the next unlocking.

[0048] In one embodiment of the present invention, the reset assembly includes a connecting rod 520 and an elastic reset member. One end of the elastic reset member facing away from the connecting rod 520 is rotatably connected to the frame 510. The connecting rod 520 is rotatably connected to each swing block 530 and the elastic reset member, respectively, so that each swing block 530 can rotate synchronously. When the lowermost swing block 530 contacts the disengagement drive member, each swing block 530 can be switched to the second state at the same time. During this process, the connecting rod 520 compresses the elastic reset member to store energy in the elastic reset member. When the shift block 550 passes the swing block 530 with the bulldozer mechanism 100, the elastic reset member releases energy, pulls the connecting rod 520 to move, and switches each swing block 530 back to the first state.

[0049] Optionally, the elastic return member includes a telescopic rod 570 and a return spring 540, one end of the telescopic rod 570 is rotatably connected to the connecting rod 520, and the other end is rotatably connected to the frame 510, and the return spring 540 is sleeved on the telescopic rod 570. When the swing block 530 is switched to the second state, the telescopic rod 570 is shortened and the return spring 540 is compressed; when the swing block 530 is switched to the first state, the telescopic rod 570 is extended and the return spring 540 is restored to its original length.

[0050] In one embodiment of the present invention, the disengagement driving member is a limit block 560, and a slope is formed on the limit block 560, which gradually moves away from the connecting shaft between the swing block 530 and the frame 510 from bottom to top. When the swing block 530 moves down with the shift block 550 to contact the slope of the limit block 560, the shift block 550 drives the swing block 530 to continue to move down, and the swing block 530 rotates under the action of the limit block 560 and switches to the second state. After the shift block 550 is separated from the swing block 530, it continues to move down with the bulldozer mechanism 100.

[0051] Furthermore, the side of the swing block 530 close to the limit block 560 is an arc structure, so that the limit block 560 can better cooperate with the swing block 530, and the swing block 530 can rotate more smoothly. At the same time, when the shift block 550 rises with the bulldozer mechanism 100, it can easily shift the swing block 530 to rotate and smoothly reach the top of the swing block 530.

[0052] In one embodiment of the present invention, a drilling bucket is also provided. Figure 1-Figure 3 The drill bucket includes a drill body 200, a drill bottom bucket door 400, a drill top 300, a bulldozer mechanism 100, a locking member, an unlocking link 610 and any unlocking mechanism described above.

[0053] The bottom hopper door 400 of the drill is hinged to the bottom of the drill body 200, and the hinge axis of the bottom hopper door 400 is horizontal, and the opening at the bottom of the drill body 200 can be opened and closed by rotation. The drill top 300 is arranged at the top of the drill body 200 and is fixedly connected to the drill body 200. The bulldozer mechanism 100 is slidably connected to the drill top 300 and one end is located in the drill body 200. When the slag gradually fills the drill body 200, the bulldozer mechanism 100 is pushed to move upward, and when the bulldozer mechanism 100 moves downward under the action of the power head of the drilling rig, the slag is pushed out. The locking member adopts a hopper hook 630, which is rotatably connected to the bottom inner wall of the drill body 200 and is suitable for locking the bottom hopper door 400. The unlocking connecting rod 610 is slidably connected to the drill top 300 and the hopper hook 630. When the unlocking connecting rod 610 slides downward, it drives the hopper hook 630 to rotate to complete the unlocking action.

[0054] A locking spring 620 is provided on the unlocking link 610. After the force of the frame 510 on the unlocking link 610 is removed, the unlocking link 610 is reset under the action of the locking spring 620, so that the bucket hook 630 returns to the locked position, preparing for locking the bottom drilling bucket 400 again.

[0055] Optionally, the frame 510 is arranged in parallel with the unlocking link 610, and a pressing portion 511 is arranged at the top of the frame 510, and the pressing portion 511 is located at the upper end of the unlocking link 610. When the frame 510 moves downward, the pressing portion 511 acts on the top of the unlocking link 610 to push the unlocking link 610 downward.

[0056] In one embodiment of the present invention, the bulldozer mechanism 100 includes a pressure plate 110, a push rod 120 and a bulldozer plate 130. The pressure plate 110 is located outside the drill body 200, and the power head of the drilling rig can directly act on the pressure plate 110. One end of the push rod 120 is connected to the pressure plate 110, and the other end is connected to the bulldozer plate 130, and the push rod 120 is slidably connected to the drill top 300. Two or more push rods 120 can be provided to increase the structural strength of the bulldozer mechanism 100 and make the bulldozer mechanism 100 more stable when sliding. The bulldozer plate 130 is slidably arranged in the drill body 200, and its axis is parallel to the drill body 200, and its edge is in contact with the inner wall of the drill body 200. A protrusion 133 is provided on the side of the bulldozer plate 130 away from the push rod 120, which can effectively reduce the adhesion of clay to the bulldozer plate 130.

[0057] Optionally, a one-way air hole 131 is provided on the bulldozer 130, and a one-way valve plate 132 is slidably connected to the side of the bulldozer 130 away from the push rod 120, and the one-way valve plate 132 is suitable for covering the one-way air hole 131. During the drilling process, the one-way valve plate 132 is affected by the slag and slides upward, and fits with the bulldozer 130, blocking the one-way air hole 131 to prevent the slag from passing through the one-way air hole 131; during the unloading process, the one-way air hole 131 slides down under the influence of gravity, and the one-way air hole 131 is opened, which is conducive to the discharge of the slag, reduces the time consumption of unloading, and improves the drilling efficiency.

[0058] Optionally, the shift block 550 is disposed on the push rod 120 , and an escape opening for the shift block 550 to pass through is disposed on the drill top 300 . When the bulldozer mechanism 100 is raised or lowered, the shift block 550 can move with the push rod 120 and pass through the drill top 300 .

[0059] In another embodiment of the present invention, a drilling rig is provided, which includes the unlocking mechanism described in any of the above embodiments or the drilling bucket described in any of the above embodiments. The power head of the drilling rig can push the bulldozer mechanism 100 downward to open the drilling bottom bucket door 400 and unload soil.

[0060] The unlocking mechanism, the drill bucket and the drilling rig provided by the present invention realize the continuous action of first opening the bottom bucket door 400 and then unloading the soil through the linkage unlocking structure, which reduces the time consumption of unloading the soil and is conducive to improving the drilling efficiency. The problem of high noise caused by rotating impact and throwing away the soil is eliminated, and construction can be carried out near residential areas at night. The elimination of the soil throwing link can reduce the energy consumption of the drilling rig, and the absence of impact vibration can extend the life of the drilling rig parts. In addition, the structure is more reliable and less prone to failure.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An unlocking mechanism, characterized in that: include: A frame body, slidably connected to the drill head of the drill bucket, and adapted to press the unlocking connecting rod when the frame body slides downward; A shifting block is arranged on the bulldozer mechanism and is suitable for rising and falling with the bulldozer mechanism; A swing block is arranged on the frame, at least two of the swing blocks are arranged at intervals along the length direction of the frame, the swing block has a first state of being located on the lifting path of the shift block and a second state of being moved away from the lifting path of the shift block, and the swing block is suitable for switching between the first state and the second state; a disengagement driving member, disposed below the swing block, adapted to drive the swing block to switch to the second state when in contact with the swing block; a reset assembly connected to the swing stopper and adapted to continuously provide an elastic force for the swing stopper to switch to the first state; The reset assembly comprises a connecting rod and an elastic reset member, wherein the connecting rod is rotatably connected to each of the swing blocks and the elastic reset member, and an end of the elastic reset member facing away from the connecting rod is rotatably connected to the frame; The disengagement driving member is a limit block, and the limit block is formed with an inclined surface which gradually moves away from the swing stopper and the transfer shaft of the frame from bottom to top.

2. The unlocking mechanism according to claim 1, characterized in that: The elastic reset member comprises a telescopic rod and a reset spring. One end of the telescopic rod is rotatably connected to the connecting rod, and the other end is rotatably connected to the frame body. The reset spring is sleeved on the telescopic rod.

3. The unlocking mechanism according to claim 1, characterized in that: A side of the swing stopper close to the limit block is a curved surface structure.

4. A drilling bucket, characterized in that: It comprises a drill body, a drill bottom bucket door, a drill top, a bulldozer mechanism, a locking member, an unlocking connecting rod and an unlocking mechanism as claimed in any one of claims 1 to 3, wherein the drill bottom bucket door is hinged to the bottom of the drill body; the drill top is arranged at the top of the drill body; the bulldozer mechanism is slidably connected to the drill top and one end of the bulldozer mechanism is located in the drill body; the locking member is suitable for locking the drill bottom bucket door; The unlocking connecting rod is slidably connected to the drill head and is suitable for driving the locking member to unlock.

5. The drilling bucket according to claim 4, characterized in that: The frame body is arranged in parallel with the unlocking link, and a pressing portion is arranged on the top of the frame body, and the pressing portion is located at the upper end of the unlocking link.

6. The drilling bucket according to claim 4, characterized in that: The bulldozer mechanism includes a pressure plate, a push rod and a bulldozer plate. The pressure plate is located outside the drill body. One end of the push rod is connected to the pressure plate, and the other end is connected to the bulldozer plate. The push rod is slidably connected to the drill top, and the bulldozer plate is slidably arranged in the drill body. A protrusion is arranged on the side of the bulldozer plate away from the push rod.

7. The drilling bucket according to claim 6, characterized in that: The bulldozer plate is provided with a one-way air hole, and a one-way valve plate is slidably connected to the side of the bulldozer plate away from the push rod, and the one-way valve plate is suitable for covering the one-way air hole.

8. A drilling rig, characterized in that: It comprises the unlocking mechanism as described in any one of claims 1 to 3 or the drilling bucket as described in any one of claims 4 to 7.

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