Slope sliding groove type hydraulic self-weight type clamp holder

Abstract

The utility model relates to the field of drilling equipment, and discloses an inclined plane sliding groove type hydraulic self-weight type clamp holder which comprises a shell, a wedge plate assembly, a slip and an oil cylinder, the shell comprises two baffles which are parallel and oppositely arranged, inclined plates which are symmetrically arranged between the two baffles and bottom plates which are arranged at the two ends of the bottoms of the two baffles; the oil cylinders are installed at the two ends of the shell. The wedge plate assembly is composed of a wedge plate, a connecting plate arranged at the top of the wedge plate and mounting plates arranged on the two sides of the connecting plate, the slips are arranged on the wedge plate, and the tops of the slips are mounted on the mounting plates through pin shafts; the shell is of an integrally-formed structure, the middles of baffles of the shell are provided with expansion parts protruding outwards, and sliding grooves are formed in the inner surfaces of the two baffles in the mode of being attached to the inclined plates. And a plurality of pin holes for mounting the slips are formed in the mounting plate and are positioned on the same straight line. The integrally-formed shell is easy to manufacture and low in cost, the expansion parts are arranged on the baffles, the requirement for clamping the drill rod with the diameter larger than the distance between the baffles is met, and the applicability of the clamp holder is improved.

Description

Technical Field

[0001] The utility model relates to the field of drilling equipment, in particular to an inclined slideway type hydraulic self-loading clamp. Background Art

[0002] The clamp is a crucial component in drilling equipment used to hold the drill pipe in any position. Currently, there are two main types of clamps: the Trojan clamp and the hydraulic deadweight clamp. The Trojan clamp requires manual operation for clamping and releasing, resulting in slow response and cumbersome operation. The hydraulic deadweight clamp, on the other hand, uses a hydraulic cylinder to push slips for clamping, offering the advantages of fast response and simple control.

[0003] Existing hydraulic deadweight clamps include: a drill rod clamp disclosed in application number CN201821248749.8 with application date of 2018-08-03, which has the following defects:

[0004] 1. The positioning device mainly includes two blocks. The installation positions of the two blocks are parallel and symmetrical. Two inclined plates are set between the two baffles. The two inclined plates and the two baffles enclose a space that can accommodate part of the sliding device. Combined with the drawings in the specification, it can be seen that the sliding device of the clamp is enclosed by the baffle, inclined plate and block to form a slide groove, and all three are assembled connection structures. This structure requires each component to be processed and then assembled. Not only is the production cost high, but the assembly requirements are also high. In addition, the spacing between the two baffles determines the diameter of the drill rod that can be used. When the distance between the drill rods is larger than the inner width between the baffles, the clamp cannot be matched and applied;

[0005] 2. The position of the slips cannot be adjusted, and you can only replace slips of different specifications to use drill rods of different diameters.

[0006] Based on this, the present application provides a sloped slide type hydraulic self-heavy weight clamp to solve the above technical problems. Utility Model Content

[0007] The utility model aims to solve the technical problems existing in the prior art. To this end, the utility model provides a sloped slideway type hydraulic self-loading clamp.

[0008] The technical solution adopted by the utility model to solve its technical problems is:

[0009] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0010] In some optional embodiments, the shell is formed by sand casting.

[0011] In some optional embodiments, two of the pin holes are partially connected, and the connection length is smaller than the radius of the pin hole.

[0012] In some optional embodiments, the pin shaft includes a shaft body and a limiting end head provided at one end of the shaft body, a first pin hole is provided at the end of the shaft body away from the limiting end head, and the shaft body is located on the right side of the limiting end head and the first pin hole and is provided with two annular grooves that enable the shaft body to pass through the connecting parts of adjacent pin holes, and the distance between the annular groove close to the limiting end head and the limiting end head is greater than the thickness of the mounting plate, and a second pin hole is provided on the annular groove away from the limiting end head.

[0013] In some optional embodiments, a pad is further included, which is used to be placed between the slip and the wedge plate after the slip is adjusted, and the pad is detachably fixed on the wedge plate.

[0014] In some optional embodiments, the wedge plate is provided with a limiting slot, the cushion block is provided with a protrusion slidably connected to the limiting slot, and the top of the cushion block is fixedly mounted on the wedge plate by a pressing block.

[0015] In some optional embodiments, the limiting slot is a dovetail slot.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model designs the shell into an integrally formed structure. The wedge plate is slidably arranged in the slide groove of the shell. The two sides of the slip are limited by baffles. The shell limits the wedge plate and slips. Compared with the existing assembled structure, the shell is simpler to manufacture and the cost is lower.

[0018] 2. The expansion part in the middle of the baffle can effectively increase the passage space of the drill rod, so that it can clamp the drill rod with a diameter larger than the distance between the baffles, thereby improving the applicability of the clamp;

[0019] 3. The mounting plate of the wedge assembly is provided with multiple pin holes that can adjust the installation position of the slips according to the size of the drill pipe. This allows the adjustment of the slip installation position. By selecting different slips to install in different positions, the clamping requirements for drill pipes of different diameters can be met, thus improving the versatility of the clamp.

[0020] 4. The design of the limit grooves and pads on the wedge plate meets the installation requirements of different installation positions of the same slip;

[0021] 5. The pin holes on the mounting plate are connected and designed so that the position of the slips can be quickly adjusted without completely pulling out the pin, thus simplifying the adjustment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 This is a three-dimensional diagram of the assembly of the clamp provided by the utility model;

[0024] Figure 2 It is a structural schematic diagram of the housing provided by the utility model;

[0025] Figure 3 This is a schematic diagram of the installation of the slips provided by the present invention on the wedge plate assembly;

[0026] Figure 4 yes Figure 3 A schematic structural diagram of a wedge plate assembly is provided;

[0027] Figure 5 This is a cross-sectional view of an installation position of the slips provided by the utility model;

[0028] Figure 6 This is a cross-sectional view of another installation position of the slips provided by the utility model;

[0029] Figure 7 This is a top view of the installation of the pad provided by the utility model on the wedge plate;

[0030] Figure 8 This is a diagram of the initial installation state of the pin provided by the utility model;

[0031] Figure 9 This is a diagram of the pin shaft being partially pulled out during slip adjustment provided by the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0033] 1—housing, 1.1—baffle, 1.1.0—chute, 1.1.1—capacity expansion part, 1.2—inclined plate, 1.3—bottom plate, 2—wedge plate assembly, 2.1—wedge plate, 2.1.1—limiting card slot, 2.2—connecting plate, 2.3—mounting plate, 2.3.1—pin hole, 3—slip, 4—oil cylinder, 5—pad, 5.1—bump, 6—pressure block, 7—pin shaft, 7.1—shaft body, 7.2—limiting end, 7.3—first pin hole, 7.4—annular groove, 7.5—second pin hole, 8—limiting pin. DETAILED DESCRIPTION

[0034] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; the terms "install", "connect", and "connect" 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, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0038] Example 1

[0039] This embodiment provides a sloped slide type hydraulic self-loading clamp, as shown in the attached Figure 1 To the attached Figure 6 As shown, it includes a housing 1, a wedge plate assembly 2, slips 3 and a cylinder 4, wherein:

[0040] The housing 1 comprises two parallel, opposing baffles 1.1, a sloping plate 1.2 symmetrically positioned between the two baffles, and base plates 1.3 located at either end of the two baffles. The middle portions of the two baffles 1.1 are provided with outwardly protruding expansion portions 1.1.1. Slide grooves 1.1.0 are provided on the inner surfaces of the two baffles 1.1, aligned with the sloping plates, for slidingly mounting the wedge assembly 2. In this embodiment, the housing 1 is integrally formed using sand casting, which simplifies manufacturing and reduces costs compared to existing prefabricated structures. Furthermore, the expansion portions 1.1.1 located in the middle portions of the baffles 1.1 effectively increase the clearance for drill rods, enabling the clamp to accommodate drill rods with diameters greater than the spacing between the baffles, thereby enhancing the clamp's applicability.

[0041] The wedge plate assembly 2 consists of a wedge plate 2.1, a connecting plate 2.2 located at the top of the wedge plate for connecting to the oil cylinder 4, and mounting plates 2.3 located on either side of the connecting plate 2.2 for mounting the slips 3. The width of the wedge plate 2.1 is equal to the distance between the two chutes 1.1.0 on either side of the inclined plate 1.2. The wedge plate assembly 2 is positioned within the chutes 1.1.0 of the housing 1 via the wedge plate 2.1. The mounting plate 2.3 is provided with a plurality of pin holes 2.3.1 for mounting the slips 3. These pin holes are all aligned on the same straight line. This design allows for adjustment of the slip installation position. By selecting different slips for installation in corresponding positions, the clamping requirements for drill pipes of different diameters can be met, thereby improving the versatility of the clamp. In a preferred embodiment, the two connected pin holes 2.3.1 are partially connected, and the connection length is less than the radius of the pin hole. This design shortens the adjustment distance of the slips.

[0042] The cylinder body of the oil cylinder 4 is mounted at both ends of the housing 1 between the two baffles 1.1 in a rotatable manner, and the piston rod of the oil cylinder 4 is fixedly mounted on the connecting plate 2.2 of the wedge plate assembly 2.

[0043] The slips 3 are mounted on the wedge plate 2.1, with their tops attached to the mounting plate 2.3 via pins 7. Preferably, the width of the slips 3 is equal to the distance between the inner surfaces of the two baffles 1.1. This design allows the slips to be supported by the wedge plate and held in place by the two baffles, ensuring a stable position.

[0044] This embodiment is described by taking the arrangement of two pin holes on the mounting plate as an example. Figure 5 As shown in the figure, the slip is on the pin hole on the left, and the back of the slip is in contact with the surface of the wedge plate. When the diameter of the drill pipe is small, the slip needs to be moved to the right. At this time, a thicker slip can be replaced so that the slip is installed on the pin hole on the right to meet the clamping requirements of the drill pipe.

[0045] Example 2

[0046] On the basis of the first embodiment, this embodiment is further designed with a cushion block 5, as shown in the attached Figure 4 To the attached Figure 7 As shown, the pad 5 is used to be placed between the slip 3 and the wedge plate 2.1 after the slip 3 is adjusted, and the pad 5 is detachably fixedly mounted on the wedge plate 2.1.

[0047] Preferably, as attached Figure 4 and attached Figure 7 As shown, the wedge plate 2.1 is provided with a limit slot 2.1.1, the cushion block 5 is provided with a protrusion 5.1 slidably connected to the limit slot 2.1.1, and the top of the cushion block 5 is fixedly mounted on the wedge plate 2.1 by a pressing block 6. In a preferred embodiment, the limit slot 2.1.1 is a dovetail groove.

[0048] In the specific adjustment of this embodiment, as shown in the attached Figure 5 As shown in the figure, the slip is on the pin hole on the left, and the back of the slip is in contact with the surface of the wedge plate. When the diameter of the drill pipe is small, the slip needs to be moved to the right and reinstalled on the pin hole on the right. Then, the pad is inserted into the limit card slot and fixed by the pressure block, as shown in the attached figure. Figure 6 As shown in the figure, this design realizes the installation requirements of the same slip in different positions.

[0049] Example 3

[0050] On the basis of the second embodiment, this embodiment further designs the pin shaft, as shown in the attached Figure 8 and attached Figure 9As shown, the pin shaft 7 includes a shaft body 7.1 and a limit end 7.2 provided at one end of the shaft body. A first pin hole 7.3 is provided at the end of the shaft body away from the limit end. Two annular grooves 7.4 are provided on the right side of the limit end and the first pin hole to allow the shaft body to pass through the connecting part of adjacent pin holes. The distance between the annular groove 7.4 close to the limit end and the limit end is greater than the thickness of the mounting plate 2.3. A second pin hole 7.5 is provided on the annular groove away from the limit end. Specifically, when the slip is normally fixed by the pin shaft, as shown in the attached figure, Figure 8 As shown, the limit pin is inserted into the first pin hole; when the slips need to be adjusted, pull out the limit pin 8, insert it into the second pin hole, pull out the pin shaft part, so that the pin hole of the mounting plate is located in the annular groove, as shown in the attached Figure 9 As shown, the pin can now move across the two pin holes from the connecting area. After the movement is completed, the pin is fully inserted and the limit pin is reinserted into the first pin hole. The pin designed in this embodiment allows the position of the slip to be quickly adjusted without completely pulling out the pin, simplifying the adjustment operation.

[0051] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic deadweight clamp with an inclined sliding groove, comprising a housing, a wedge plate assembly, slips, and a cylinder, wherein the housing comprises two parallel and oppositely disposed baffles, an inclined plate symmetrically disposed between the two baffles, and a bottom plate disposed at both ends of the bottom of the two baffles; the cylinder is mounted at both ends of the housing; the wedge plate assembly comprises a wedge plate, a connecting plate disposed at the top of the wedge plate for connecting to the cylinder, and mounting plates disposed on both sides of the connecting plate for mounting slips, the slips being disposed on the wedge plate, the top of the slips being mounted to the mounting plates via pins; and characterized in that: The shell is an integrally formed structure, wherein the middle parts of the two baffles are provided with an expansion portion protruding outward, and the inner surfaces of the two baffles are provided with a sliding groove in contact with the inclined plate; The wedge plate is slidably arranged in the slide groove, and its width is equal to the distance between the two slide grooves on both sides of the inclined plate; The mounting plate is provided with a plurality of pin holes for mounting the slips, and the plurality of pin holes are all on the same straight line; The width of the slips is equal to the distance between the inner surfaces of the two baffles.

2. The holder according to claim 1, characterized in that: The shell is formed by sand casting.

3. The holder according to claim 1, wherein: The two pin holes are partially connected, and the connection length is smaller than the radius of the pin hole.

4. The holder according to claim 1, wherein: It also includes a pad block, which is used to be placed between the slip and the wedge plate after the slip is adjusted. The pad block is detachably fixed on the wedge plate.

5. The holder according to claim 4, characterized in that: The wedge plate is provided with a limiting slot, the cushion block is provided with a protrusion slidably connected to the limiting slot, and the top of the cushion block is fixedly mounted on the wedge plate through a pressing block.

6. The holder according to claim 5, characterized in that: The limiting slot is a dovetail slot.

7. The holder according to claim 3, characterized in that: The pin shaft includes a shaft body and a limiting end head provided at one end of the shaft body, a first pin hole is provided at the end of the shaft body away from the limiting end head, and two annular grooves are provided on the shaft body located on the limiting end head and the right side of the first pin hole, which enable the shaft body to pass through the connecting parts of adjacent pin holes, and the distance between the annular groove close to the limiting end head and the limiting end head is greater than the thickness of the mounting plate, and a second pin hole is provided on the annular groove away from the limiting end head.

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