Locking pin type top head locking device

Abstract

The invention relates to a locking pin type ejector head locking device which comprises an ejector head and an ejector rod, the ejector head and the ejector rod are detachably connected through a connecting assembly, a tail handle is arranged at the end, close to the ejector rod, of the ejector head, and an annular groove is formed in the tail handle; an inner cavity groove is formed in the end, close to the ejector head, of the ejector rod, an insertion hole and a pin shaft hole are formed in the ejector rod, and the pin shaft hole is formed in the top or / and the bottom of the inner cavity groove and communicated with the inner cavity groove. One end of the insertion hole is communicated with one end of the pin shaft hole, and the other end of the insertion hole penetrates through the ejector rod and is communicated with the outside; the ejector head is inserted into the inner cavity groove of the ejector rod through the tail handle, and the connecting assembly is arranged between the annular groove and the pin shaft hole so that the tail handle can be clamped into the inner cavity groove. The locking mode is convenient and rapid, the tedious step of disassembling the top head can be effectively solved, the downtime caused by wrapping the top head is shortened, and the top head tool is rapidly replaced.

Description

Technical Field

[0001] The invention belongs to the technical field of locking devices, in particular to a locking pin type plug locking device. Background Art

[0002] The cylindrical pin is currently used for locking on site. The tail handle of the mandrel is installed into the front end of the mandrel, and then the pin passes through the arc of the entire mandrel tail handle to form a lock with the front end of the mandrel. Disadvantages: The locking is too strong, and there are many related locking spare parts. When a problem occurs, there is no way to deal with it quickly. You can only cut the steel pipe and remove the mandrel step by step. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects in the prior art and provide a locking pin type plug locking device to solve the cumbersome steps of removing the plug, reduce the downtime caused by plug wrapping, and quickly replace the plug tooling.

[0004] A locking pin type mandrel locking device comprises a mandrel and a mandrel, wherein the mandrel and the mandrel are detachably connected via a connecting assembly.

[0005] The end of the mandrel close to the mandrel is provided with a tail handle, and the tail handle is provided with an annular groove;

[0006] An inner cavity groove is formed at one end of the push rod near the push head, and a plug hole and a pin shaft hole are formed on the push rod. The pin shaft hole is arranged at the top and / or the bottom of the inner cavity groove and is connected to the inner cavity groove; one end of the plug hole is connected to one end of the pin shaft hole, and the other end of the plug hole passes through the push rod and is connected to the outside;

[0007] The ejector head is inserted into the inner cavity groove of the ejector rod through the tail handle, and the connecting component is arranged between the annular groove and the pin shaft hole so that the tail handle is clamped in the inner cavity groove.

[0008] Furthermore, the connecting component includes a compression spring and a roller ball. The two compression springs and the roller ball are placed in the pin shaft hole, and the two compression springs are symmetrically arranged on both sides of the roller ball. The diameter of the socket is smaller than the diameter of the pin shaft hole, and the diameter of the compression spring is larger than the diameter of the socket. The roller ball is stuck between the pin shaft hole and the annular groove.

[0009] Furthermore, two roller balls are provided, the two roller balls are arranged in the middle position of the pin shaft hole, and the two compression springs are symmetrically installed on both sides of the two roller balls.

[0010] Furthermore, an open groove is provided on the outer wall of the push rod, the open groove is connected with the pin shaft hole through an opening, and a pin shaft cover is detachably mounted on the opening.

[0011] Furthermore, the pin shaft holes, the insertion holes, the opening grooves and the pin shaft covers are each provided with two groups, and the two groups of the pin shaft holes are symmetrically arranged at the top and bottom of the inner cavity groove.

[0012] Furthermore, the diameter of the pin shaft hole is greater than or equal to the diameter of the roller ball.

[0013] Furthermore, when the mandrel is inserted into the inner cavity groove of the mandrel through the tail handle, the top end of the annular groove is located at or above the center position of the pin shaft hole.

[0014] Furthermore, when the mandrel is inserted into the inner cavity groove of the mandrel through the tail handle, the bottom end of the annular groove is located at or below the center of the pin shaft hole.

[0015] The advantages and beneficial effects of the present invention are:

[0016] (1) When in use, first insert the pressure spring and roller ball through the opening of the slot, then insert the tail handle of the plug into the inner groove of the ejector rod, the annular groove is located at the pin hole, then insert another roller ball and pressure spring through the opening, and finally close the pin cover. When a fault occurs and needs to be disassembled, open the pin cover, insert the rod-shaped body (such as a steel pipe) from the jack and push the roller ball away from the pin hole, then take out the plug and replace it.

[0017] (2) The locking method of the present invention is convenient and quick, which can effectively solve the cumbersome steps of removing the plug, reduce the downtime caused by the plug wrapping, and quickly replace the plug tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a locking pin type plug locking device provided by the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the disassembled structure;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure from another angle;

[0021] Figure 4 It is a cross-sectional schematic diagram of the connection between the mandrel and the mandrel;

[0022] Description of reference numerals:

[0023] The plug head 1, the ejector rod 2, the tail handle 3, the annular groove 4, the inner cavity groove 5, the insertion hole 6, the pin shaft hole 7, the compression spring 8, the roller ball 9, the open groove 10, and the pin shaft cover 11. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it is necessary to understand 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 drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] like Figure 1-4 As shown, a locking pin type mandrel locking device comprises a mandrel 1 and a mandrel 2, wherein the mandrel 1 and the mandrel 2 are detachably connected via a connecting assembly.

[0027] The end of the mandrel 1 close to the mandrel 2 is provided with a tail handle 3, and the tail handle 3 is provided with an annular groove 4;

[0028] The push rod 2 is provided with an inner cavity groove 5 at one end close to the push head, and a plug hole 6 and a pin shaft hole 7 are provided on the push rod 2. The pin shaft hole 7 is provided at the top or / and the bottom of the inner cavity groove 5 and is connected to the inner cavity groove 5; one end of the plug hole 6 is connected to one end of the pin shaft hole 7, and the other end of the plug hole 6 passes through the push rod 2 and is connected to the outside;

[0029] The ram 1 is inserted into the inner cavity groove 5 of the ram 2 through the tail handle 3 , and the connecting component is arranged between the annular groove 4 and the pin shaft hole 7 so that the tail handle 3 is clamped in the inner cavity groove 5 .

[0030] As a preferred embodiment of the above technical solution, the connecting assembly includes a compression spring 8 and a roller ball 9. The two compression springs 8 and the roller ball 9 are placed in the pin shaft hole 7, and the two compression springs 8 are symmetrically arranged on both sides of the roller ball 9. The diameter of the socket 6 is smaller than the diameter of the pin shaft hole 7, and the diameter of the compression spring 8 is larger than the diameter of the socket 6. The roller ball 9 is stuck between the pin shaft hole 7 and the annular groove 4.

[0031] In the above technical solution, when in use, first put the pressure spring and the roller ball through the opening of the open groove, then insert the tail handle of the plug into the inner cavity groove of the push rod, the annular groove is located at the pin shaft hole, and then put another roller ball and pressure spring through the opening, and finally close the pin shaft cover. When a fault occurs and needs to be disassembled, open the pin shaft cover, insert the rod-shaped body (such as a steel pipe) from the jack and push the roller ball away from the pin shaft hole, and then take out the plug and replace it.

[0032] As a preferred embodiment of the above technical solution, two roller balls 9 are provided, the two roller balls 9 are arranged in the middle position of the pin shaft hole 7, and the two compression springs 8 are symmetrically installed on both sides of the two roller balls 9.

[0033] As a preferred embodiment of the above technical solution, an open groove 10 is provided on the outer wall of the push rod 2, and the open groove 10 is connected with the pin shaft hole 7 through an opening, and a pin shaft cover 11 is detachably installed on the opening.

[0034] As a preferred embodiment of the above technical solution, the pin shaft holes 7 , the insertion holes 6 , the opening grooves 10 and the pin shaft covers 11 are each provided with two groups, and the two groups of the pin shaft holes 7 are symmetrically arranged at the top and bottom of the inner cavity groove 5 .

[0035] As a preferred embodiment of the above technical solution, the diameter of the pin hole 7 is greater than or equal to the diameter of the roller ball 9.

[0036] As a preferred embodiment of the above technical solution, when the plug 1 is inserted into the inner cavity groove 5 of the ejector rod 2 through the tail handle 3, the top end of the annular groove 4 is located at or above the center of the pin shaft hole 7.

[0037] As a preferred embodiment of the above technical solution, when the plug 1 is inserted into the inner cavity groove 5 of the ejector rod 2 through the tail handle 3, the bottom end of the annular groove 4 is located at or below the center of the pin shaft hole 7.

[0038] The working principle of the present invention is as follows:

[0039] When in use, first put the pressure spring and the roller ball through the opening of the open groove, then insert the tail handle of the head into the inner cavity groove of the push rod, the annular groove is located at the pin shaft hole, and then put another roller ball and pressure spring through the opening, and finally close the pin shaft cover.

[0040] When a fault occurs and disassembly is required, the pin cover is opened, a rod-shaped body (such as a steel pipe) is inserted into the socket and the roller ball is pushed away from the pin hole, and then the top is taken out and replaced.

[0041] It should be emphasized that the embodiments of the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation modes. Any other implementation modes derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A locking pin type plug locking device, characterized in that: The invention comprises a mandrel (1) and a mandrel (2), wherein the mandrel (1) and the mandrel (2) are detachably connected via a connecting assembly. A tail handle (3) is provided at one end of the mandrel (1) close to the mandrel (2), and an annular groove (4) is provided on the tail handle (3); An inner cavity groove (5) is formed at one end of the push rod (2) close to the push head (1); a plug hole (6) and a pin shaft hole (7) are formed on the push rod (2); the pin shaft hole (7) is arranged at the top or / and the bottom of the inner cavity groove (5) and is connected to the inner cavity groove (5); one end of the plug hole (6) is connected to one end of the pin shaft hole (7); the other end of the plug hole (6) passes through the push rod (2) and is connected to the outside; The mandrel (1) is inserted into the inner cavity groove (5) of the mandrel (2) through the tail handle (3), and the connecting component is arranged between the annular groove (4) and the pin shaft hole (7) so that the tail handle (3) is clamped in the inner cavity groove (5).

2. A locking pin type plug locking device according to claim 1, characterized in that: The connecting assembly comprises a compression spring (8) and a roller ball (9). The two compression springs (8) and the roller ball (9) are placed in a pin shaft hole (7), and the two compression springs (8) are symmetrically arranged on both sides of the roller ball (9). The diameter of the insertion hole (6) is smaller than the diameter of the pin shaft hole (7), the diameter of the compression spring (8) is larger than the diameter of the insertion hole (6), and the roller ball (9) is clamped between the pin shaft hole (7) and the annular groove (4).

3. A locking pin type plug locking device according to claim 2, characterized in that: The two roller balls (9) are provided, and the two roller balls (9) are arranged in the middle of the pin shaft hole (7), and the two compression springs (8) are symmetrically installed on both sides of the two roller balls (9).

4. A locking pin type plug locking device according to claim 3, characterized in that: An open groove (10) is provided on the outer wall of the push rod (2), the open groove (10) is connected to the pin shaft hole (7) through an opening, and a pin shaft cover (11) is detachably mounted on the opening.

5. A locking pin type plug locking device according to claim 4, characterized in that: The pin shaft holes (7), the insertion holes (6), the opening grooves (10) and the pin shaft covers (11) are each provided in two groups, and the two groups of the pin shaft holes (7) are symmetrically arranged at the top and bottom of the inner cavity groove (5).

6. A locking pin type plug locking device according to claim 5, characterized in that: The diameter of the pin shaft hole (7) is greater than or equal to the diameter of the roller ball (9).

7. A locking pin type plug locking device according to claim 6, characterized in that: When the mandrel (1) is inserted into the inner cavity groove (5) of the mandrel (2) through the tail handle (3), the top end of the annular groove (4) is located at or above the center of the pin shaft hole (7).

8. A locking pin type plug locking device according to claim 6, characterized in that: When the mandrel (1) is inserted into the inner cavity groove (5) of the mandrel (2) through the tail handle (3), the bottom end of the annular groove (4) is located at or below the center of the pin shaft hole (7).

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