Elastic clamp radial recovery and shifting fork split type rope coring drilling tool elastic clamp positioning device

Abstract

The utility model discloses an elastic clamp radial recovery and shifting fork split type rope coring drilling tool elastic clamp positioning device which comprises an elastic clamp blocking head, a clamp recovery barrel, an elastic clamp assembly, an elastic clamp support, an elastic clamp spring, a shifting block, a shifting block spring and an elastic clamp chamber. The elastic card support is located in the card collecting cylinder, and the card collecting cylinder is located in the elastic card blocking head. A shifting block on the elastic card bracket can be embedded into the side hole to realize the connection between the card collecting barrel and the elastic card bracket; the elastic clamping assembly is located in the elastic clamping chamber and comprises two elastic clamping plates, a sliding rail base and a limiting block. The sections of the elastic clamping plates are Z-shaped, and the two elastic clamping plates are symmetrically arranged; the limiting block guide groove is matched with the sliding rail seat sliding groove to limit the elastic clamping plate to be opened and retracted, so that the outer end of the transverse plate at the bottom of the elastic clamping plate is embedded into or withdrawn from the clamping hole. When the wire-line coring drilling tool is recycled, if the inner pipe moves upwards to tightly jack the elastic clamping stop head, the problem that the elastic clamping stop head is tightly jacked can be avoided through radial recycling of the elastic clamping plate; by means of the split type shifting fork design, the problem of interference between the shifting fork and the elastic clamp can be effectively solved.

Description

Technical Field

[0001] The utility model relates to a spring-clip radial recovery and shift-fork split-type rope coring drill spring-clip positioning device. Background Art

[0002] With the rapid development of my country's economy, the demand for mineral resource mining and geological exploration has become more urgent. Rope coring drills can effectively save drilling costs and therefore play a very important role in the drilling field. When rope coring drills are used to drill and coring in complex formations, the core tube often becomes clogged. The existing rope coring drill inner tube assembly positioning mechanisms generally have two types: ball card positioning and spring card positioning. The spring card plate of the spring card positioning mechanism is hinged to achieve the rotational recovery of the spring card. However, when the core is blocked, the inner tube assembly moves upward, and the spring card plate loses its rotation space and becomes stuck with the spring card stopper, resulting in failure to salvage the inner tube assembly. In addition, the ball card positioning method uses the limit between the steel ball and the inclined surface to achieve positioning. Although it can avoid the problem of sticking when the core is blocked, the force between the positioning steel ball and the outer tube is extremely large, and the threaded connection between the spring card stopper and the spring card chamber is prone to cracking. At the same time, the positioning steel ball is easily deformed after being squeezed, which reduces the reliability of salvage. In addition, both mechanisms have the risk of interference between the spring-loaded stopper and the spring-loaded plate or the positioning steel ball, which also increases the probability of failure in positioning the inner tube assembly. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a spring-loaded positioning device for the inner tube assembly of a rope coring drill tool suitable for geological exploration with a simple structure and high reliability. The device can also effectively solve the problem of the inner tube assembly being stuck during the salvage process, and can also effectively avoid interference between the spring-loaded stop head and the spring-loaded plate.

[0004] The technical solution adopted by the utility model is: a spring-clip radial recovery and fork-split rope coring drill spring-clip positioning device, comprising a spring-clip stop head, a card receiving cylinder, a spring-clip assembly, a spring-clip bracket, a spring-clip spring, a shift block, a shift block spring and a spring-clip chamber; the spring-clip bracket is located in the card receiving cylinder, and the card receiving cylinder is located in the spring-clip stop head; a plurality of blind holes are provided on the side wall of the spring-clip bracket, each of which is provided with a shift block, and a spring is provided between the shift block and the bottom of the blind hole; a side hole is provided on the side wall of the card receiving cylinder corresponding to each shift block, and the shift block can be embedded in the side hole to realize the connection between the card receiving cylinder and the spring-clip bracket; the spring-clip assembly is located in the card receiving chamber, and the spring-clip assembly comprises two spring-clip plates, a slide rail seat and a limit block; the cross-section of the spring-clip plate is Z-shaped, and the two spring-clip plates are opposite to each other. The arrangement is called; the horizontal plates on the upper ends of the two spring-clamp plates are placed at the two ends of the slide groove of the slide rail seat, and the middle parts of the two spring-clamp plates are respectively embedded in the two guide grooves of the limit block, the slide rail seat is fixedly installed in the spring-clamp bracket, and the limit block is connected to the card receiving cylinder through a pin shaft, and a long straight hole is provided on the spring-clamp bracket corresponding to the pin shaft, and the length direction of the long straight hole is set along the axis of the spring-clamp bracket; a card hole is provided on the side wall of the card receiving cylinder corresponding to the spring-clamp plate, and the guide groove of the limit block cooperates with the slide rail seat groove to limit the spring-clamp plate to only move horizontally in the radial direction when opening and retracting, so that the outer end of the horizontal plate at the bottom of the spring-clamp plate is embedded in or exits the card hole; the upper end of the spring-clamp spring is fixedly connected to the upper end of the spring-clamp bracket, and the lower end of the spring-clamp spring is pressed on the spring pin shaft on the card receiving cylinder; the spring-clamp chamber is connected to the lower end of the spring-clamp stop head.

[0005] Furthermore, the top and bottom of the outer end of the shift block are respectively provided with wedge-shaped surfaces, which facilitate the shift block to be inserted into or removed from the side hole of the card receiving cylinder.

[0006] Furthermore, a groove cooperating with the shift block is provided on the inner side surface of the spring-loaded stopper.

[0007] Furthermore, the top of the card receiving cylinder is connected to a spear head.

[0008] Furthermore, two blind holes are provided on the side wall of the spring card bracket, and the connecting line of the two blind holes is perpendicular to the slide groove of the slide rail seat.

[0009] Furthermore, a spring hole is provided on the bottom surface of the shift block, and the spring is placed in the spring hole.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1) The utility model realizes radial movement of the spring plate by moving the limit block up and down. If the core is stuck during the salvage process, causing the inner tube assembly to move upward and the spring plate and the spring plate to hit each other, the utility model can smoothly retract the spring plate in the radial direction, thus solving the problem of failure of the inner tube assembly salvage caused by the spring plate hitting each other, and improving the efficiency of drilling work.

[0012] 2) The utility model has a simple structure. The spring clip of the utility model has a large force-bearing area and is in plane contact, so it has a strong bearing capacity and is not prone to deformation, which greatly improves the reliability of the work.

[0013] 3) The shift block of the present invention is installed on the ejection card bracket and is independent of the ejection card mechanism, which can effectively avoid the risk of interference between the ejection card stopper and the ejection card plate, and improve the reliability of the ejection card positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the utility model in the drilling state.

[0015] Figure 2 yes Figure 1 Middle AA section view.

[0016] Figure 3 It is the main view of the utility model in the recovery state.

[0017] Figure 4 yes Figure 3 Middle BB cross-section view.

[0018] Figure 5 It is a structural diagram of the present utility model.

[0019] Figure 6 It is a structural diagram of the slide rail seat of the utility model.

[0020] Figure 7 This is a structural diagram of the shift block of the utility model; Figure 7 (a) is a three-dimensional diagram of the first viewing angle of the dial block of the utility model, Figure 7 (b) is a three-dimensional diagram of the shift block of the present invention from a second viewing angle.

[0021] Figure 8 It is a structural diagram of the limit block of the utility model.

[0022] Figure 9 This is a structural diagram of the card chamber of the utility model; Figure 9 (a) is a top view of the card chamber of the utility model. Figure 9 (b) is a cross-sectional view of the ejection chamber of the present invention.

[0023] In the figure: 1-spearhead; 2-spring-loaded stopper; 3-card receiving cylinder; 4-spring-loaded bracket; 5-spring-loaded spring; 6-shift block; 7-spring-loaded chamber; 8-limiting block; 9-spring-loaded plate; 10-slide rail seat; 11-shift block spring; 201-groove; 301-pin; 302-side hole; 303-spring pin; 401-long straight hole; 402-blind hole; 601-spring hole; 602-shift block limiting surface; 603-wedge surface; 801-boss; 802-guide groove; 1001-slide groove. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1-9 As shown, the utility model includes a spearhead 1, a spring stopper 2, a card receiving cylinder 3, a spring bracket 4, a spring spring 5, a shift block 6, a limit block 8, a spring plate 9, a slide rail seat 10, a shift block spring 11 and a card chamber 7. The spearhead 1 is fixedly connected to the top of the card receiving cylinder 3.

[0026] The eject bracket 4 is located within the card receiving tube 3, which is in turn located within the ejection stop 2. Two blind holes 402 are defined on the side wall of the eject bracket 4 (the number of blind holes is not limited to two and may be more). Each blind hole 402 houses a shift block 6, with a spring 11 positioned between the shift block 6 and the bottom of the blind hole. A side hole 302 is defined on the side wall of the card receiving tube 3, corresponding to each shift block 6. The shift block 6 can be inserted into the side hole 302 to connect the card receiving tube 3 to the eject bracket 4. A spring hole 601 is defined on the bottom surface of the shift block 6, with the spring 11 positioned within the spring hole 601. A groove 201 is defined on the inner side of the ejection stop 2 to mate with the shift block 6. Each shift block 6 has a shift block stop surface 602, which, upon contact with the card receiving tube 3, prevents the shift block 6 from ejecting from the tube 3. Wedge-shaped surfaces 603 are defined on the top and bottom of the outer ends of the shift block 6 to facilitate insertion and removal of the shift block from the side hole of the card receiving tube.

[0027] The ejection chamber 7 is connected to the lower end of the ejection stop 2; the ejection assembly is located in the ejection chamber 7 and includes two ejection plates 9, a slide rail seat 10, and a limit block 8. The slide rail seat 10 is fixed to the ejection bracket 4 via two pins 1002. The cross section of the ejection plate 9 is Z-shaped, and the two ejection plates 9 are symmetrically arranged. The horizontal plates at the upper ends of the two ejection plates 9 are placed at both ends of the slide groove 1001 of the slide rail seat 10. The middle parts of the two ejection plates 9 are respectively embedded in the two guide grooves 802 of the limit block 8. The two side surfaces of the boss 801 of the limit block 8 are respectively in contact with the two opposite side surfaces of the middle parts of the two ejection plates 9. The limit block 8 is connected to the card receiving cylinder 3 via a pin 301. A long straight hole 401 is provided on the ejection bracket 4 corresponding to the pin. The length direction of the long straight hole 401 is arranged along the axis of the ejection bracket 4. A latching hole is provided on the side wall of the card receiving cylinder 3, corresponding to the latch plate 9. The guide groove 802 of the limit block 8 cooperates with the slide groove 1001 of the slide rail seat 10 to restrict the latch plate 9 to radial horizontal movement during expansion and retraction, allowing the outer end of the horizontal plate at the bottom of the latch plate 9 to engage or exit the latching hole. The upper end of the latching spring 5 is fixedly connected to the upper end of the latch bracket 4, and the lower end of the latching spring 5 presses against the spring pin 303 on the card receiving cylinder. The line connecting the two blind holes in the side wall of the latch bracket 4 is perpendicular to the slide groove 1001 of the slide rail seat 10.

[0028] The specific usage of this utility model is as follows:

[0029] When the inner tube assembly is lowered, the wedge-shaped surface 603 at the bottom of the shift block 6 touches the outer tube and compresses the shift block spring 11 to achieve contraction. During the lowering process of the inner tube assembly, the shift block 6 and the elastic card plate 9 are contracted in the inner tube assembly under the radial constraint of the outer tube.

[0030] During normal drilling, the radial constraint on the detent plate 9 is released. The detent spring 5 compresses the spring pin 303 connected to the receiving tube 3, causing the receiving tube 3 to move axially downward, driving the stop block 8, which is pinned to the receiving tube 3, to move axially downward. The guide groove 802 and boss 801 on the stop block 8 force the detent plate 9 to open outward. Simultaneously, the groove 201 on the detent stop head 2 releases the radial constraint on the shift block 6, allowing the shift block 6 to open and mate with the groove 201. If the radial orientation of the shift block 6 is misaligned with the orientation of the groove 201, the shift block 6 can still mate smoothly with the groove 201 after the outer tube rotates. If the inner tube assembly moves upward, the detent stop head 2 restricts the upward movement of the detent plate 9, thereby positioning the inner tube assembly. Simultaneously, as the outer tube rotates, the shift block 6 engages with the groove 201 and rotates with it. The limiting surface 602 of the shifting block contacts the side hole 302 on the card receiving cylinder, driving the upper part of the inner tube assembly to rotate along with the outer tube.

[0031] To retrieve the inner tube assembly, the overshot tool pulls up the spearhead 1, driving the receiving cylinder 3 axially upward. This in turn causes the stopper 8, to which the cylinder 3 is pinned, to move axially upward. The guide groove 802 and boss 801 on the stopper 8 force the detent plate 9 inward. Restricted by the guide groove 1001 on the rail seat, the detent plate 9 retracts radially and horizontally, releasing the inner tube assembly. When the wedge-shaped surface 603 on the top of the shifting block 6 contacts the small inner diameter surface during the retrieval process, the shifting block spring 11 compresses and retracts inward, completing the retrieval of the inner tube assembly.

Claims

1. A snap-catch positioning device for a rope coring drill with radially retractable snap-catch and a split fork, comprising a snap-catch stopper, a card receiving cylinder, a snap-catch assembly, a snap-catch bracket, a snap-catch spring, a shift block, a shift block spring, and a snap-catch chamber; the snap-catch bracket is located within the card receiving cylinder, and the card receiving cylinder is located within the snap-catch stopper; the device is characterized by: There are multiple blind holes on the side wall of the eject card bracket, and a shift block is provided in each blind hole, and a spring is provided between the shift block and the bottom of the blind hole; a side hole is provided on the side wall of the card receiving cylinder corresponding to each shift block, and the shift block can be embedded in the side hole to realize the connection between the card receiving cylinder and the eject card bracket; the eject card assembly is located in the eject card chamber, and the eject card assembly includes two eject card plates, a slide rail seat and a limit block; the cross section of the eject card plate is Z-shaped, and the two eject card plates are symmetrically arranged; the horizontal plates on the upper ends of the two eject card plates are placed at the two ends of the slide groove of the slide rail seat, and the middle parts of the two eject card plates are respectively embedded in the two guide grooves of the limit block, and the slide rail The seat is fixedly installed in the ejection bracket, and the limit block is connected to the card receiving cylinder through a pin shaft. A long straight hole is provided on the ejection bracket corresponding to the pin shaft, and the length direction of the long straight hole is arranged along the axis of the ejection bracket; a card hole is provided on the side wall of the card receiving cylinder corresponding to the ejection plate, and the limit block guide groove cooperates with the slide rail seat groove to limit the ejection plate to only move horizontally in the radial direction when opening and retracting, so that the outer end of the horizontal plate at the bottom of the ejection plate is embedded in or exits the card hole; the upper end of the ejection spring is fixedly connected to the upper end of the ejection bracket, and the lower end of the ejection spring is pressed on the spring pin shaft on the card receiving cylinder; the ejection chamber is connected to the lower end of the ejection stop head.

2. The spring-clip radial recovery and fork-separated rope coring drill spring-clip positioning device according to claim 1 is characterized by: The top and bottom of the outer end of the shift block are respectively provided with wedge-shaped surfaces, which facilitate the opening and contraction of the shift block under the constraint of the outer tube.

3. The spring-cage positioning device for rope coring drill tools with radial spring-cage recovery and split fork according to claim 1 is characterized by: A groove cooperating with the shift block is provided on the inner side surface of the spring-loaded stopper.

4. The spring-cage positioning device for rope coring drill tools with radial spring-cage recovery and split fork according to claim 1 is characterized by: The top of the card receiving cylinder is connected to a spearhead.

5. The spring-clip radial recovery and fork-separated rope coring drill spring-clip positioning device according to claim 1 is characterized in that: Two blind holes are provided on the side wall of the spring card bracket, and the connecting line of the two blind holes is perpendicular to the sliding groove of the slide rail seat.

6. The spring-clip radial recovery and fork-separated rope coring drill spring-clip positioning device according to claim 1 is characterized by: A spring hole is provided on the bottom surface of the shift block, and a spring is placed in the spring hole.

Images