Knocking tool

Abstract

The utility model belongs to the technical field of mechanical assembly, and particularly relates to a knocking tool. The knocking tool is used for enabling a first workpiece and a second workpiece which are sleeved with each other to move relatively and coaxially and comprises a supporting block arranged outside the first workpiece, an inclined hole is formed in the supporting block, and the central axis of the inclined hole intersects with the central axis of the first workpiece; the knocking rod is coaxially and movably arranged in the inclined hole, the first end of the knocking rod abuts against the second workpiece, and force is applied to the second end of the knocking rod so that the second workpiece can be pushed to move relative to the first workpiece.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical assembly, and particularly relates to a knocking tooling. Background Art

[0002] At present, most common liner hangers are of the embedded slip type. After the liner hanger is assembled, it needs to be subjected to conventional overall machine pressure test for sealing (generally 35 MPa).

[0003] During the pressure test, the slips will move along the position of the cone sleeve. In order to prevent the slips from moving excessively during the pressure test, a metal ring is externally clamped at the position of the slips. After the pressure test for sealing is qualified, due to the high pressure test pressure, the slips will bite on the casing of the hanger. In order to restore the slips to the initial state, the commonly used assembly process at present is that one person supports an aluminum rod at the rear section of the slips, and another person uses a sledgehammer to strike the aluminum rod to achieve the purpose of making the slips retreat.

[0004] The above method for resetting the slips has many disadvantages. First of all, it requires the cooperation of two people. One person stabilizes the aluminum rod and the other person strikes the aluminum rod, which consumes manpower. In addition, the pressure test pressure is relatively high, and a large force is required to strike the aluminum rod. The coordination of the two people is insufficient, which is likely to cause safety accidents in production and assembly.

[0005] In view of the above problems, according to the objective requirements of the efficient, economical and safe development direction, it is urgent to design a knocking tooling that can be used to reset the slips on the hanger after the pressure test. Summary of the Utility Model

[0006] Aiming at the above-mentioned technical problems, the utility model aims to propose a knocking tooling, which can improve work efficiency.

[0007] According to the utility model, there is provided a knocking tooling for relatively coaxially moving a first workpiece and a second workpiece which are sleeved with each other, comprising:

[0008] A support block arranged outside the first workpiece, wherein an inclined hole is arranged in the support block, and the central axis of the inclined hole intersects with the central axis of the first workpiece; and

[0009] A knocking rod coaxially and movably arranged in the inclined hole, the first end of the knocking rod abuts against the second workpiece, and by applying a force to the second end of the knocking rod, the second workpiece is pushed to move relative to the first workpiece.

[0010] In a specific embodiment, the support block includes a first arc surface, and the first arc surface is adapted to the outer wall of the first workpiece.

[0011] In a specific embodiment, the knocking tooling further includes a connecting belt, and the connecting belt fixes the supporting block outside the first workpiece in a winding manner.

[0012] In a specific embodiment, the knocking tooling further includes a limiting ring, and the limiting ring is fixedly arranged on the side surface of the supporting block to prevent the connecting belt from running off track.

[0013] In a specific embodiment, the first end of the knocking rod is made of a flexible metal material.

[0014] In a specific embodiment, the first end of the knocking rod is provided with a knocking head made of a flexible metal material, and the knocking head is fixedly connected to the knocking rod in a detachable manner.

[0015] In a specific embodiment, the cross sections of the inclined hole and the knocking rod are configured in a shape capable of transmitting torque.

[0016] In a specific embodiment, the supporting block includes a plurality of support plates connected side by side, and inclined holes for passing the knocking rod are provided on each support plate.

[0017] In a specific embodiment, the support plates are fixedly connected to each other by fasteners, and a spacer block is arranged between adjacent support plates.

[0018] In a specific embodiment, the first workpiece is a hanger, the second workpiece is a slip sleeved on the hanger, the contact surface between the slip and the hanger is an inclined surface, and the inclination angle of the knocking rod is the same as the inclination angle of the contact surface.

[0019] Compared with the prior art, the advantages of the present application are as follows.

[0020] The supporting block of the present utility model is arranged on the outer wall of the hanger to support the knocking rod instead of manual labor. Only one worker is needed to be responsible for knocking to complete the reset of the slip, improving the pressure test efficiency of the hanger and fully ensuring the safety and high efficiency during the assembly operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be described below with reference to the accompanying drawings.

[0022] Figure 1 Shows a schematic diagram of an embodiment of the knocking tooling according to the present utility model;

[0023] Figure 2 Shows a schematic diagram of an embodiment of the supporting block of the knocking tooling according to the present utility model;

[0024] Figure 3Shows a schematic diagram of a percussion rod of a percussion tool according to the present utility model;

[0025] Figure 4 Shows a schematic diagram of the percussion tool according to the present utility model installed on a hanger.

[0026] In the figure:

[0027] 1. Support block; 11. Tilted hole; 12. First arc surface; 13. Second arc surface; 14. Support plate; 15. Fixing hole;

[0028] 2. Percussion rod; 21. First end; 22. Second end; 23. Percussion head; 24. Torque transmission plane;

[0029] 3. Limit ring;

[0030] 4. First workpiece;

[0031] 5. Second workpiece;

[0032] 100. Percussion tool.

[0033] In this application, all the drawings are schematic drawings, only used to illustrate the principle of the present utility model and are not drawn according to the actual ratio. Detailed implementation manners

[0034] The present utility model will be introduced below with reference to the drawings.

[0035] It should be noted that the directional terms or qualifiers "left", "right", etc. used in this application are all with reference to the Figure 1 mentioned. They do not limit the absolute positions of the components involved, but can vary according to specific circumstances.

[0036] Figure 1 Shows the structure of the percussion tool 100 according to the present utility model. The percussion tool 100 is used to make two mutually sleeved first workpiece 4 and second workpiece 5 move relatively coaxially. In this embodiment, the first workpiece 4 and the second workpiece 5 are specifically a hanger and a slip respectively.

[0037] It should be noted that the structures of the hanger and the slip are well known to those skilled in the art and will not be elaborated here. The hanger and the slip are only a specific embodiment provided by the present utility model, and the percussion tool 100 provided by the present utility model can also be applied to other similar workpieces.

[0038] As Figure 1 shown, the percussion tool 100 includes a support block 1 and a percussion rod 2.

[0039] In this embodiment, as Figure 1 and Figure 2As shown, the support block 1 is configured in a cylindrical shape with a notch. That is, the support block 1 includes a second arc surface 13 that forms a cylindrical shape and a first arc surface 12 located at the notch position. The radian of the first arc surface 12 is the same as the radian of the outer wall of the hanger, so that the first arc surface 12 can be adapted to the hanger.

[0040] During the working process, as Figure 4 shown, the support block 1 is located outside the hanger (the first workpiece 4), and the first arc surface 12 of the support block 1 contacts the outer wall of the hanger. That is to say, the central axis of the first arc surface 12 coincides with the central axis of the hanger.

[0041] It should be noted that due to the problem of drawing, Figure 4 the two support plates 14 of the support block 1 in

[0042] are not drawn as the first arc surface 12 contacting the outer wall of the hanger, which does not affect those skilled in the art's understanding of the present utility model.

[0043] According to the present utility model, an inclined hole 11 is provided in the support block 1. When the first arc surface 12 of the support block 1 contacts the outer wall of the hanger, the central axis of the inclined hole 11 intersects with the central axis of the hanger. The knocking rod 2 is coaxially and movably arranged in the inclined hole 11, and the central axis of the knocking rod 2 coincides with the central axis of the inclined hole 11, so that the first end 21 of the knocking rod 2 can abut against the end of the slip (the second workpiece 5), as Figure 4 shown. By applying a force axially to the second end 22 of the knocking rod 2, the slip can be pushed to move relative to the hanger. In this embodiment, a force is applied to the second end 22 of the knocking rod 2 by hitting it with a hammer, so as to push the slip to move relative to the hanger.

[0044] In a preferred embodiment, the contact surface between the slip and the hanger is an inclined surface (conical surface), and the inclination angle of the knocking rod 2 is the same as the inclination angle of the contact surface (conical surface).

[0045] In a preferred embodiment, as Figure 1 shown, the knocking tool 100 further includes a limit ring 3, and the limit ring 3 is fixedly arranged on the side surface of the support block 1 to prevent the connecting belt from running off.

[0046] Specifically, the limiting ring 3 is configured as a square frame structure. One side of the limiting ring 3 is fixedly connected to the second arc surface 13 of the support block 1 by welding or other means. The length of this side of the limiting ring 3 is the same as the overall thickness of the support block 1, and vertical edges are provided at both ends. And this side of the limiting ring 3 is parallel to the generatrix of the second arc surface 13. When the support block 1 is fixed to the outer wall of the hanger using a connecting belt, the connecting belt passes through the limiting ring 3, thereby preventing the connecting belt from running off course.

[0047] In a preferred embodiment, the cross-sections of the inclined hole 11 and the knocking rod 2 are configured in a shape capable of transmitting torque. As Figure 2 and Figure 3 shown, a torque-transmitting plane 24 is provided on the outer wall of the knocking rod 2. Correspondingly, the inclined hole 11 is configured in a shape matching the cross-section of the knocking rod 2. With this setting, the knocking rod 2 can axially move relative to the inclined hole 11, but the two cannot rotate relative to each other, thus effectively ensuring the stability of the knocking rod 2 during the knocking process.

[0048] In a preferred embodiment, the first end 21 of the knocking rod 2 is made of a flexible metal material. The first end 21 made of the flexible metal material is used to directly contact the part to be knocked (slip), effectively preventing damage to the part to be knocked during the knocking process.

[0049] It is easy to understand that the flexible metal material is well-known to those skilled in the art, such as copper.

[0050] Furthermore, the first end 21 of the knocking rod 2 is provided as a knocking head 23 made of a flexible metal material. The knocking head 23 is fixedly connected to the knocking rod 2 in a detachable manner. With this setting, a new knocking head 23 can be replaced after the knocking head 23 is damaged.

[0051] According to the present invention, in a preferred embodiment, as Figure 1 shown, the support block 1 includes a plurality of support plates 14 connected side by side. Inclined holes 11 for passing the knocking rod 2 are provided on each of the support plates 14. By providing a plurality of support plates 14, the overall stability of the support block 1 installed on the hanger can be improved. Secondly, dividing one support block 1 into a plurality of support plates 14 is conducive to the machining of the inclined holes 11, avoiding the situation where the depth of the inclined holes 11 is too large to be machined by the machine tools for producing parts.

[0052] Furthermore, the support plates 14 are fixedly connected to each other by fasteners, and a spacer is provided between adjacent support plates 14. In this way, deformation of adjacent support plates 14 after long-term use can be avoided. Specifically, the fasteners in this embodiment are bolts, as Figure 1 and Figure 2As shown, a plurality of fixing holes 15 for passing bolts are provided on the support plate 14. The spacer is specifically at least one nut sleeved on the bolt, and these nuts are located between adjacent support plates 14 to ensure the gap between adjacent support plates and prevent deformation.

[0053] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0054] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside 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.

[0055] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example 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.

[0056] Finally, it should be noted that the above are only the preferred implementation schemes of the present invention and do not constitute any limitation to the present invention. Although the present invention has been described in detail with reference to the foregoing implementation schemes, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A striking tool, characterized in that: Used to make two mutually nested first workpieces and second workpieces move coaxially relative to each other, comprising: A support block (1) is arranged outside the first workpiece, an inclined hole (11) is arranged inside the support block (1), and a central axis of the inclined hole (11) intersects with a central axis of the first workpiece; and A knocking rod (2) is coaxially movably arranged in the inclined hole (11), wherein the first end of the knocking rod (2) abuts against the second workpiece, and force is applied to the second end of the knocking rod (2) to push the second workpiece to move relative to the first workpiece.

2. The striking tool according to claim 1, characterized in that: The support block (1) comprises a first curved surface (12), and the first curved surface (12) is adapted to the outer wall of the first workpiece.

3. The striking tool according to claim 2, characterized in that: The striking tool also includes a connecting belt, which fixes the support block (1) to the outside of the first workpiece by winding.

4. The striking tool according to claim 3, characterized in that: The striking tool further comprises a limiting ring (3), wherein the limiting ring (3) is fixedly arranged on the side of the supporting block (1) and is used to prevent the connecting belt from deviating.

5. The striking tool according to any one of claims 1 to 4, characterized in that: The first end of the knocking rod (2) is configured to be made of a flexible metal material.

6. The striking tool according to claim 5, characterized in that: The first end of the striking rod (2) is configured as a striking head (23) made of a flexible metal material, and the striking head (23) is fixedly connected to the striking rod (2) in a detachable manner.

7. The striking tool according to any one of claims 1 to 4, characterized in that: The cross-sections of the inclined hole (11) and the knocking rod (2) are configured in a shape capable of transmitting torque.

8. The striking tool according to any one of claims 1 to 4, characterized in that: The support block (1) comprises a plurality of support plates (14) connected side by side, and each support plate (14) is provided with an inclined hole (11) for passing the knocking rod (2).

9. The striking tool according to claim 8, characterized in that: The support plates (14) are fixedly connected to each other via fasteners, and cushion blocks are arranged between adjacent support plates (14).

10. The striking tool according to any one of claims 1 to 4, characterized in that: The first workpiece is a hanger, the second workpiece is a slip sleeved on the hanger, the contact surface between the slip and the hanger is an inclined surface, and the inclination angle of the knocking rod (2) is the same as the inclination angle of the contact surface.

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