Centerless drilling tool elastic clamp assembly mechanism

Abstract

The utility model relates to an elastic clamp assembly mechanism of a centerless drilling tool, and belongs to the technical field of drilling equipment for geological exploration. According to the technical scheme, a fishing spear head (1), a recycling frame (3), an elastic clamping frame (4), an upper elastic clamping assembly and a lower elastic clamping assembly are all arranged in an elastic clamping chamber (12), the upper end of the fishing spear head (1) extends out of the elastic clamping chamber (12), the lower end of the fishing spear head (1) is in threaded connection with the recycling frame (3), and the recycling frame (3) is arranged in the elastic clamping frame (4) and fixedly connected with the elastic clamping frame (4); and the upper elastic clamp assembly and the lower elastic clamp assembly are arranged in the recovery frame up and down. The fishing spearhead has the advantages that the fishing spearhead can be kept in a good vertical state, and a horizontal hole and a deflecting hole can be fished more conveniently; the upper elastic clamp assembly adopts surface contact, the stress area is increased, the risk of clamp disengaging is effectively reduced, the lower elastic clamp assembly directly replaces a suspension mechanism, the structure is simplified, the water passing sectional area is increased, and the resistance is reduced when the elastic clamp assembly dives.

Description

TECHNICAL FIELD

[0001] The utility model relates to a centerless drilling drilling tool elastic clamping assembly mechanism and belongs to the drilling equipment technical field for geological exploration. BACKGROUND

[0002] The elastic clamping assembly is a key equipment used in geological exploration, and the elastic clamping assembly comprises an inner pipe assembly and an outer pipe assembly. The spear mechanism is at the top end of the inner pipe assembly. When the inner pipe assembly is fished with a fishing tool, the spear head needs to be in the axial direction of the entire drill string, and the fishing tool can be clamped on the spear head. The fishing tool is lifted upward to move the recovery pipe upward and compress the elastic clamping inward to make it fold, so that the inner pipe assembly and the outer pipe assembly are separated, and the inner pipe assembly is lifted upward.

[0003] The structure of the existing spear mechanism mostly has a spring mounting hole at the upper end of the positioning block, and the lower end is in contact with the spear seat. The potential energy of the spring compression can stabilize the spear head at the required position. The contact surface of the positioning block and the spear seat is generally spherical contact or triangular concave-convex groove cooperation, which has the problems of complicated machining process, unstable contact surface, easy shaking of the spear head, and difficult rotation of the spear head. In addition, the rigidity of the spring cannot be too large, otherwise the rotation of the spear head will be difficult; on the other hand, the small rigidity of the spring makes the force for keeping the spear head in an upright state small, and the spear head is easy to shake and deviate to one side when it is upright, which affects the rotation effect.

[0004] The commonly used elastic clamping mechanism has two structures: one is a combination structure of a tension spring and an elastic clamping jaw, and the elastic clamping jaw is mainly opened by the tension of the tension spring. The inner side of the elastic clamping jaw has no support, and the elastic clamping assembly can swing in the drill pipe, which easily causes the elastic clamping mechanism to be detached. The other is a quadrilateral linkage structure composed of a spring, an elastic pin, a connecting rod and an elastic clamping jaw. When any outer side of the elastic clamping jaw is stressed, the two elastic clamping jaws are simultaneously contracted, causing the elastic clamping mechanism to be detached, and the inner pipe system enters the drill pipe.

[0005] The suspension mechanism of the elastic clamping mainly consists of a suspension ring in the inner pipe assembly and a seat ring in the outer pipe assembly. The suspension mechanism needs the cooperation of the seat ring and the suspension ring, the water passing capacity is small, and the submersion resistance is large. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a centerless drilling drilling tool elastic clamping assembly mechanism. The spear head is connected with the recovery frame by threads, the recovery frame is connected with the elastic clamping frame by positioning screws, and the spear head can keep a good upright state. The upper and lower double sets of elastic clamping are adopted, the upper elastic clamping is composed in the elastic clamping chamber without rotation, which effectively prevents the shaking of the elastic clamping assembly. In addition, the face contact between the upper elastic clamping plate and the inner wall of the elastic clamping chamber increases the stress area, effectively reducing the risk of detachment. The lower elastic clamping directly replaces the suspension mechanism, increases the water passing cross-sectional area, reduces the resistance of the elastic clamping assembly when diving, and solves the problems in the background technology.

[0007] The technical scheme of the utility model is:

[0008] A centerless drilling drill tool elastic clamping assembly mechanism, comprising a spear head, a recovery frame, an elastic clamping frame, an upper elastic clamping component, a lower elastic clamping component and an elastic clamping chamber, the spear head, the recovery frame, the elastic clamping frame, the upper elastic clamping component and the lower elastic clamping component are arranged inside the elastic clamping chamber, the upper end of the spear head extends out of the elastic clamping chamber, the lower end of the spear head is threadedly connected with the recovery frame, the recovery frame is arranged inside the elastic clamping frame and is fixedly connected with the elastic clamping frame; the upper elastic clamping component and the lower elastic clamping component are arranged inside the recovery frame in a top-down manner.

[0009] The upper elastic clamping component comprises an upper elastic clamping plate and a compression spring, the upper elastic clamping plate is provided with the compression spring in a top-down manner inside the upper elastic clamping plate, and the upper elastic clamping plate is clamped on the inner wall of the elastic clamping chamber through the recovery frame and the elastic clamping frame in sequence on both sides of the upper elastic clamping plate.

[0010] The lower elastic clamping component comprises a lower elastic clamping plate and a tension spring, the lower elastic clamping plate is provided with the tension spring, the tension spring is fixed in the elastic clamping frame through a supporting pin, and the supporting pin is connected with a split pin; the lower end of the lower elastic clamping plate is clamped in the internal groove of the elastic clamping chamber through the elastic clamping frame.

[0011] The upper elastic clamping plate is composed of an elastic clamping plate one and an elastic clamping plate two, both the elastic clamping plate one and the elastic clamping plate two are L-shaped plates and are matched with each other to be combined together to form a rectangular structure; one end of each of the elastic clamping plate one and the elastic clamping plate two is respectively provided with a pear-shaped hole one and a pear-shaped hole two, the pear-shaped hole one and the pear-shaped hole two are partially corresponding, and the elastic clamping plate one and the elastic clamping plate two are connected through a positioning screw passing through the corresponding parts of the pear-shaped hole one and the pear-shaped hole two.

[0012] The elastic clamping plate one and the elastic clamping plate two are provided with compression spring holes in a top-down manner inside the elastic clamping plate one and the elastic clamping plate two, the compression spring holes are placed with compression springs, and the elastic clamping plate one and the elastic clamping plate two relatively slide in the elastic clamping chamber through the action of the compression springs, so as to be clamped on the inner wall of the elastic clamping chamber.

[0013] The spear head is provided with a boss structure at the lower part, a double-disc self-locking washer is arranged between the boss structure of the spear head and the recovery frame; a connecting thread is arranged below the boss structure of the spear head, and the spear head is threadedly connected with the recovery frame through the connecting thread.

[0014] The recovery frame is provided with openings at both sides of the lower end, the upper elastic clamping plate holes and the lower elastic clamping plate holes are arranged in sequence on both sides of the elastic clamping frame in a top-down manner, the upper elastic clamping plate is clamped on the inner wall of the elastic clamping chamber through the openings of the recovery frame and the upper elastic clamping plate holes of the lower elastic clamping plate in sequence; and the lower elastic clamping plate is clamped in the internal groove of the elastic clamping chamber through the lower elastic clamping plate holes.

[0015] The recovery frame and the elastic clamping frame are respectively provided with positioning hole one and positioning hole two, the recovery frame is fixedly connected with the elastic clamping frame through positioning screws passing through the positioning hole one and the positioning hole two in sequence, and the inner tube assembly is prevented from falling off.

[0016] The supporting pin hole is arranged on the elastic card frame, a tension spring is sleeved on the supporting pin, and the two ends of the supporting pin pass through the supporting pin hole of the elastic card frame and are fixed by a split pin.

[0017] The top end of the tension spring is sleeved on the supporting pin, and the bottom end is clamped in the inner side of the lower elastic card plate.

[0018] The fishing spear head and the recovery frame are screw-connected, the fishing spear head always keeps a vertical state, the recovery frame is connected with the elastic card frame by positioning screws, the inner tube assembly is connected stably, and the inner tube assembly will not fall off during fishing. The upper elastic card assembly sequentially passes through the opening of the recovery frame and the upper elastic card plate hole of the elastic card frame and is in contact with the inner wall of the elastic card chamber, the upper elastic card plate adopts surface contact, the stress area is increased, and the risk of elastic card falling is effectively reduced; the lower elastic card assembly passes through the lower elastic card plate hole of the elastic card frame and is in contact with the internal groove of the elastic card chamber, the lower elastic card assembly directly replaces the suspension mechanism, the water passing cross-sectional area is increased, and the resistance of the elastic card assembly during diving is reduced.

[0019] The fishing spear head can keep a good vertical state, and is more convenient for fishing in horizontal holes and deviation holes; the upper and lower elastic card assemblies are in contact with the inner wall and the internal groove of the elastic card chamber, the upper elastic card assembly adopts surface contact, the stress area is increased, the risk of elastic card falling is effectively reduced, the lower elastic card assembly directly replaces the suspension mechanism, the structure is simplified, the water passing cross-sectional area is increased, and the resistance of the elastic card assembly during diving is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the utility model;

[0021] Figure 2 It is a structural schematic view of the fishing spear head of the utility model;

[0022] Figure 3 It is a structural schematic view of the recovery frame of the utility model;

[0023] Figure 4 It is a structural schematic view of the elastic card frame of the utility model;

[0024] Figure 5 It is Figure 4 A-A direction schematic view;

[0025] Figure 6 It is a structural schematic view of the compression spring of the utility model;

[0026] Figure 7 It is a structural schematic view of the elastic card plate of the utility model;

[0027] Figure 8 It is a structural schematic view of the upper elastic card plate of the utility model;

[0028] Figure 9The utility model discloses a pop-up clamping plate structure for the utility model positioning screw structure schematic diagram,

[0029] Figure 10 The utility model discloses a pop-up clamping plate structure for the utility model positioning screw structure schematic diagram,

[0030] Figure 11 The utility model discloses a pop-up clamping plate structure for the utility model positioning screw structure schematic diagram,

[0031] Figure 12 The utility model discloses a pop-up clamping plate structure for the utility model positioning screw structure schematic diagram,

[0032] Figure 13 The utility model discloses a pop-up clamping plate structure for the utility model positioning screw structure schematic diagram,

[0033] Figure 14 The utility model discloses a pop-up clamping plate structure for the utility model positioning screw structure schematic diagram,

[0034] In the drawing: fishing spear head 1, double disc self-locking washer 2, recovery frame 3, pop-up clamping frame 4, compression spring 5, upper pop-up clamping plate 6, positioning screw 7, support pin 8, cotter pin 9, lower pop-up clamping plate 10, tension spring 11, pop-up clamping chamber 12, boss structure 13, internal groove 14, pop-up clamping plate one 15, pop-up clamping plate two 16, pear-shaped hole one 17, pear-shaped hole two 18, upper pop-up clamping plate hole 19, lower pop-up clamping plate hole 20, positioning hole one 21, positioning hole two 22, support pin hole 23, compression spring hole 24, opening 25. Specific implementation

[0035] The utility model will be further explained through examples in combination with the drawings.

[0036] A centerless drilling drilling tool pop-up assembly mechanism, contain fishing spear head 1, recovery frame 3, pop-up clamping frame 4, upper pop-up clamping component, lower pop-up clamping component and pop-up clamping chamber 12, fishing spear head 1, recovery frame 3, pop-up clamping frame 4, upper pop-up clamping component and lower pop-up clamping component are all set up in the inside of pop-up clamping chamber 12, and fishing spear head 1 upper end stretches out the outside of pop-up clamping chamber 12, and fishing spear head 1 lower end is connected with recovery frame 3 by screw thread, and recovery frame 3 is set up in the inside of pop-up clamping frame 4, and is fixedly connected with pop-up clamping frame 4, and upper pop-up clamping component and lower pop-up clamping component are arranged in the inside of recovery frame 3 upside and downside.

[0037] The upper pop-up clamping component contains upper pop-up clamping plate 6 and compression spring 5, and compression spring 5 is set in the inside of upper pop-up clamping plate 6 upside and downside respectively, and upper pop-up clamping plate 6 both sides are sequentially clamped in the inner wall of pop-up clamping chamber 12 through recovery frame 3 and pop-up clamping frame 4.

[0038] The lower pop-up clamping component contains lower pop-up clamping plate 10 and tension spring 11, and tension spring 11 is arranged in the inside of lower pop-up clamping plate 10, and tension spring 11 is fixed in the inside of pop-up clamping frame 4 through support pin 8, and support pin 8 is connected with cotter pin 9, and lower pop-up clamping plate 10 lower end is clamped in the internal groove 14 of pop-up clamping chamber 12 through pop-up clamping frame 4.

[0039] The upper elastic card board 6 is composed of elastic card board one 15 and elastic card board two 16, and the elastic card board one and the elastic card board two are both L-shaped plates and are matched with each other to form a rectangular structure; one end of the elastic card board one and the elastic card board two is respectively provided with pear-shaped hole one 17 and pear-shaped hole two 18, and the pear-shaped hole one and the pear-shaped hole two are partially corresponding, and the elastic card board one and the elastic card board two are connected by passing the corresponding parts of the pear-shaped hole one and the pear-shaped hole two with the positioning screw.

[0040] The inside of the elastic card board one 15 and the elastic card board two 16 is provided with compression spring hole 24, and the compression spring 5 is placed in the compression spring hole, and the elastic card board one and the elastic card board two slide in the elastic card chamber 12 by the action of the compression spring 5, so as to be clamped on the inner wall of the elastic card chamber 12.

[0041] The lower part of the spear head 1 is provided with boss structure 13, and the boss structure 13 of the spear head 1 is provided with double-disc self-locking washer 2 between the recovery frame 3; the lower part of the boss structure 13 of the spear head 1 is provided with connecting thread, and the spear head 1 is connected with the recovery frame 3 through the connecting thread.

[0042] The lower end of the recovery frame 3 is provided with opening 25 on both sides, and the elastic card frame 4 is sequentially provided with upper elastic card board hole 19 and lower elastic card board hole 20 on both sides; the upper elastic card board 6 is sequentially clamped on the inner wall of the elastic card chamber 12 through the opening of the recovery frame 3 and the upper elastic card board hole of the lower elastic card board 10; and the lower elastic card board 10 is clamped in the inner groove 14 of the elastic card chamber 12 through the lower elastic card board hole.

[0043] The recovery frame 3 and the elastic card frame 4 are respectively provided with positioning hole one 21 and positioning hole two 22, and the recovery frame 3 is fixedly connected with the elastic card frame 4 through the positioning screw 7 sequentially passing through the positioning hole one and the positioning hole two, so as to ensure that the inner tube assembly does not fall off.

[0044] The elastic card frame 4 is further provided with support pin hole 23, the support pin 8 is sleeved with tension spring 11, and the two ends of the support pin 8 pass through the support pin hole of the elastic card frame 4 and are fixed through the split pin 9.

[0045] The number of the pear-shaped hole one 17, the pear-shaped hole two 18, the positioning screw 7, the positioning hole one 21 and the positioning hole two 22 is two, and the upper elastic card assembly is fixedly connected with the recovery frame 3 and the elastic card frame 4 through the two positioning screws 7.

[0046] The positioning hole one 21 is a through hole composed of the holes at the two ends of the recovery frame 3, and the two positioning holes one are arranged above and below; the positioning hole two 22 is a through hole composed of the holes at the two ends of the elastic card frame 4, and the two positioning holes two are arranged above and below, and the positioning hole one 21 and the positioning hole two 22 are matched with the positioning screw 7; the support pin hole 2 is a through hole composed of the holes at the two ends of the elastic card frame 4 and matched with the support pin, and the support pin hole 2 is arranged below the positioning hole two 22.

[0047] The top end of the tension spring 11 is sleeved on the supporting pin 8, and the bottom end is clamped in the inner side of the lower ejection plate 10.

[0048] By the utility model, the fishing spear head 1 and the recovery frame 3 are threadedly connected, the fishing spear head always keeps a vertical state, the recovery frame 3 is connected with the ejection frame 4 by the positioning screw 7, the inner tube assembly is connected stably, and the inner tube assembly will not fall off when the fishing spear is used. The upper ejection assembly successively passes through the opening of the recovery frame 3 and the upper ejection plate hole 19 of the ejection frame 4 and is in contact with the inner wall of the ejection chamber 12, the upper ejection plate adopts surface contact, the stress area is increased, and the risk of ejection is effectively reduced; the lower ejection assembly passes through the lower ejection plate hole 20 of the ejection frame 4 and is in contact with the internal recess 14 of the ejection chamber 12, the lower ejection assembly directly replaces the suspension mechanism, the water passing cross-sectional area is increased, and the resistance of the ejection assembly is reduced when diving.

Claims

1. A centerless drill in-hole drill tool pop-on assembly mechanism, characterized by: The device comprises a lance head (1), a recovery frame (3), a spring card frame (4), an upper spring card component, a lower spring card component and a spring card chamber (12). The lance head (1), the recovery frame (3), the spring card frame (4), the upper spring card component and the lower spring card component are arranged inside the spring card chamber (12), the upper end of the lance head (1) extends out of the spring card chamber (12), the lower end of the lance head (1) is threadedly connected with the recovery frame (3), the recovery frame (3) is arranged inside the spring card frame (4) and is fixedly connected with the spring card frame (4); the upper spring card component and the lower spring card component are arranged inside the recovery frame (3) in an up-down manner. The upper spring card component comprises an upper spring card plate (6) and a compression spring (5), the compression spring (5) is arranged inside the upper spring card plate (6) in an up-down manner, and the upper spring card plate (6) is clamped on the inner wall of the spring card chamber (12) through the recovery frame (3) and the spring card frame (4) in sequence. The lower spring card component comprises a lower spring card plate (10) and a tension spring (11), the tension spring (11) is arranged inside the lower spring card plate (10), the tension spring (11) is fixed inside the spring card frame (4) through a support pin (8), and the support pin (8) is connected with a split pin (9); the lower end of the lower spring card plate (10) is clamped in an inner groove (14) of the spring card chamber (12) through the spring card frame (4).

2. A centerless drill tool spring clip assembly mechanism according to claim 1, wherein: The upper spring card plate (6) is composed of a first spring card plate (15) and a second spring card plate (16), the first spring card plate and the second spring card plate are both L-shaped plates and are matched with each other, and are combined together to form a rectangular structure; one end of the first spring card plate and the second spring card plate is respectively provided with a pear-shaped hole (17) and a pear-shaped hole (18), the pear-shaped hole (17) and the pear-shaped hole (18) are partially corresponding, and the first spring card plate and the second spring card plate are connected by passing a positioning screw through the corresponding parts of the pear-shaped hole (17) and the pear-shaped hole (18).

3. A centerless drill pop-on assembly mechanism according to claim 2, wherein: The first spring card plate (15) and the second spring card plate (16) are both provided with compression spring holes (24) inside and arranged in an up-down manner, and the compression spring (5) is arranged in the compression spring hole.

4. A trunnion assembly for a core drill according to claim 1 or 2, wherein: The lance head (1) is provided with a boss structure (13) at the lower part, a double-disc self-locking washer (2) is arranged between the boss structure (13) of the lance head (1) and the recovery frame (3), a connecting thread is arranged below the boss structure (13) of the lance head (1), and the lance head (1) is threadedly connected with the recovery frame (3) through the connecting thread.

5. A centerless drill pop-on assembly mechanism according to claim 1 or 2, wherein: The lower end of the recovery frame (3) is provided with openings on both sides, the upper spring card plate (6) is clamped on the inner wall of the spring card chamber (12) through the openings of the recovery frame (3) and the upper spring card plate holes (19) of the lower spring card plate (10) in sequence, and the lower spring card plate (10) is clamped in the inner groove (14) of the spring card chamber (12) through the lower spring card plate holes.

6. A centerless drill pop-on assembly mechanism according to claim 5, wherein: The recovery frame (3) and the spring card frame (4) are respectively provided with a first positioning hole (21) and a second positioning hole (22), and the recovery frame (3) is fixedly connected with the spring card frame (4) through a positioning screw (7) passing through the first positioning hole and the second positioning hole in sequence.

7. A centerless drill pop-on assembly mechanism according to claim 6, wherein: The spring card frame (4) is further provided with a support pin hole (23), the tension spring (11) is sleeved on the support pin (8), and the two ends of the support pin (8) pass through the support pin hole of the spring card frame (4) and are fixed through the split pin (9).

8. A trunnion assembly mechanism for a coreless drill string according to claim 7, wherein: The top end of the tension spring (11) is sleeved on the supporting pin (8), and the bottom end is clamped on the inner side of the lower elastic clamping plate (10).

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