Slide valve pulling and dismounting tool

Abstract

The invention discloses a sliding valve pulling and dismounting tool, and belongs to the technical field of sliding valve dismounting tools. The tool comprises a pull rod and a drawing assembly, a tensioning driving assembly, a sleeve and an expansion sleeve are sequentially arranged on the pull rod in the axial direction, the tensioning driving assembly is in threaded connection with the pull rod, the sleeve is in sliding connection with the pull rod, the pull rod only has the freedom degree of axial movement relative to the sleeve, and the sleeve is sleeved with the drawing assembly. And the bolt is in threaded connection with the sleeve. The sliding valve is pulled out of the shell in a time-saving and labor-saving mode by means of the threaded connection relation of the pulling assembly and the sleeve, and the dismounting efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of slide valve pull-out tooling, belong to slide valve dismounting tool technical field. BACKGROUND

[0002] Most electric valves adopt slide valve structure, when electric valve is decomposed or maintained, it needs to use dismounting tool to pull out slide valve from shell.

[0003] Chinese patent document with publication number CN205651288U discloses a kind of dismounting tool of civil aircraft fuel component slide valve bush, comprising: a round pipe, upper end is equipped with boss, boss outer circle is equipped with rotating handle in symmetrical position, upper end inner hole of round pipe is threaded hole, and lower end pipe wall is uniformly distributed with several axial long notches, the inner hole orifice of lower end of round pipe is the taper mouth of inside big and outside small, with the ball of diameter greater than the small end of taper mouth;A top rod, its lower end is inserted into the inner hole of the round pipe and stops the ball, and the upper end is equipped with external thread and cooperates with the upper end threaded hole of the round pipe, the top end of top rod is equipped with boss, and the top end of the boss is opened with axial threaded hole;A ram, its upper end is boss, lower end is equipped with thread and cooperates with the threaded hole of top end boss, and the middle is light pole, with the center opening ram hammer.Using the dismounting tool not only can guarantee that seal ring is not damaged when dismounting, and it is also convenient to operate without other tools.

[0004] When the slide valve is pulled out from the shell using the above-mentioned dismounting tool, the end of the round pipe with the ball is inserted into the inner hole of the slide valve, then the top rod is screwed to cooperate with the round pipe, the ball is pushed to open the lower end of the round pipe, the round pipe clamps the slide valve, and then the ram hammer hits the upper end of the ram to gradually pull out the slide valve from the shell. However, the process of using the ram hammer to hit the upper end of the ram to pull out the slide valve from the shell is time-consuming and laborious, and the dismounting efficiency is low. SUMMARY

[0005] To solve the above technical problems, the present application provides a kind of slide valve pull-out tooling.

[0006] The present application is realized by the following technical solutions: A kind of slide valve pull-out tooling, including pull rod and drawing assembly, the pull rod is sequentially provided with tensioning drive assembly, sleeve and expansion sleeve in axial direction, the tensioning drive assembly is threadedly connected with pull rod, the sleeve is slidably connected with pull rod, and the pull rod only has the freedom of moving in axial direction relative to the sleeve, the drawing assembly is sleeved on the sleeve, and is threadedly connected with the sleeve.

[0007] The two ends of the expansion sleeve are both provided with inner tapered surface, and the small end of the inner tapered surface of the two ends of the expansion sleeve is close to each other, and a plurality of slot A are uniformly arranged on the two ends of the expansion sleeve in circumferential direction.

[0008] One end of the pull rod is provided with an outer taper surface A, and the outer taper surface A is matched with an inner taper surface of the expansion sleeve away from the sleeve.

[0009] One end of the sleeve close to the expansion sleeve is provided with an outer taper surface B, and the outer taper surface B is matched with an inner taper surface of the expansion sleeve close to the sleeve.

[0010] An outer circle of the pull rod is provided with a sliding groove in the axial direction, the sleeve is provided with a threaded hole in the radial direction, the threaded hole is threadedly connected with a limiting pin, one end of the limiting pin extends into the sliding groove, and the diameter of the limiting pin is matched with the width of the sliding groove.

[0011] The expansion driving assembly comprises a nut, the nut is threadedly connected with the pull rod, and the nut is provided with two pins.

[0012] The nut is provided with two through holes in the radial direction, and the two through holes are coaxially arranged, one end of the two pins is inserted into the two through holes one by one, and the two pins are transitionally matched or interference-fitted with the through holes.

[0013] The pulling assembly comprises a screw sleeve and a positioning sleeve, the screw sleeve is threadedly connected with the sleeve, and the positioning sleeve is movably sleeved on the sleeve and located on one side of the screw sleeve close to the expansion sleeve.

[0014] The screw sleeve is provided with a plurality of handles uniformly distributed in the circumferential direction.

[0015] One end of the positioning sleeve is provided with a circular hole, and the circular hole is gap-fitted with the sleeve, the positioning sleeve is provided with a bushing accommodating cavity, and two slot openings B are uniformly arranged on one end of the positioning sleeve away from the circular hole in the circumferential direction.

[0016] The beneficial effects of the present application are that the pulling assembly and the sleeve are threadedly connected, the slide valve is pulled out of the shell, and the disassembly efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the present application after the handle is removed. Figure 2 It is a front view of the expansion sleeve of the present application. Figure 3 It is Figure 2 It is a sectional view along A-A. Figure 4 It is a right view of the expansion sleeve of the present application. Figure 5 It is a front view of the pull rod of the present application. Figure 6 It is a structural schematic view of the sleeve of the present application. Figure 7 It is a structural schematic view of the positioning sleeve of the present application. Figure 8 It is Figure 7 It is a left view. Figure 9 This is a schematic diagram of the handle of the present invention.

[0018] In the diagram: 1-expansion sleeve, 11-slot A, 12-inner conical surface, 2-pull rod, 21-slide groove, 22-outer conical surface A, 3-sleeve, 31-outer conical surface B, 32-threaded hole, 4-positioning sleeve, 41-shoulder receiving cavity, 42-slot B, 43-round hole, 5-threaded sleeve, 6-limiting pin, 7-nut, 8-pin, 9-handle. Detailed Implementation

[0019] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0020] like Figures 1 to 9 As shown, the present invention provides a valve removal tooling comprising a pull rod 2 and a pulling assembly. The pull rod 2 is axially arranged with a tensioning drive assembly, a sleeve 3, and a tension sleeve 1. The tensioning drive assembly is threadedly connected to the pull rod 2, and the sleeve 3 is slidably connected to the pull rod 2. The pull rod 2 has only one degree of freedom of movement relative to the sleeve 3, moving axially. The pulling assembly is fitted onto the sleeve 3 and threadedly connected to it. When the valve needs to be removed from the housing, the tension sleeve 1 of the tooling is first inserted into the valve's inner hole. Then, the tensioning drive assembly is rotated, causing the pull rod 2 to move axially away from the tension sleeve 1 relative to the valve, gradually expanding the tension sleeve 1 and tightening the valve. Next, the pulling assembly is rotated, causing it to move axially towards the housing along the sleeve 3. When the pulling assembly contacts the housing, the pulling assembly is rotated further. The housing, through the reaction force of the pulling assembly, sleeve 3, tensioning drive assembly, and pull rod 2, exerts a force on the tension sleeve 1, thereby pulling the tension sleeve 1 and the valve out of the housing together. By utilizing the threaded connection between the pull assembly and the sleeve 3, the slide valve can be pulled out of the housing in a time-saving and labor-saving manner, resulting in high disassembly efficiency.

[0021] Both ends of the expansion sleeve 1 are provided with inner conical surfaces 12, and the small ends of the inner conical surfaces 12 at both ends of the expansion sleeve 1 are close to each other. Both ends of the expansion sleeve 1 are provided with multiple slots A11 evenly distributed in the circumferential direction.

[0022] One end of the pull rod 2 is provided with an outer conical surface A22, and the outer conical surface A22 is in contact with the inner conical surface 12 on the expansion sleeve 1 that is away from the sleeve 3.

[0023] The sleeve 3 has an outer conical surface B31 at one end near the expansion sleeve 1, and the outer conical surface B31 is in contact with the inner conical surface 12 of the expansion sleeve 1 near the sleeve 3.

[0024] The outer circle of the pull rod 2 is provided with a sliding groove 21 in the axial direction, the sleeve 3 is provided with a threaded hole 32 in the radial direction, the threaded hole 32 is threadedly connected with a limiting pin 6, one end of the limiting pin 6 extends into the sliding groove 21, and the diameter of the limiting pin 6 is matched with the width of the sliding groove 21. The circumferential freedom of the pull rod 2 is limited by the limiting pin 6, so that the pull rod 2 only has the freedom of moving in the axial direction relative to the sleeve 3.

[0025] The tensioning driving assembly comprises a nut 7, the nut 7 is threadedly connected with the pull rod 2, and the nut 7 is provided with two pins 8.

[0026] The nut 7 is provided with two through holes in the radial direction, and the two through holes are coaxially arranged, one end of the two pins 8 is inserted into the two through holes one by one, and is in transition fit or interference fit with the through hole. It is convenient to hold the pin 8 to rotate the nut 7.

[0027] The pulling assembly comprises a screw sleeve 5 and a positioning sleeve 4, the screw sleeve 5 is threadedly connected with the sleeve 3, and the positioning sleeve 4 is movably sleeved on the sleeve 3 and located on one side of the screw sleeve 5 close to the expansion sleeve 1.

[0028] The screw sleeve 5 is provided with a plurality of handles 9 uniformly distributed in the circumferential direction.

[0029] One end of the positioning sleeve 4 is provided with a circular hole 43, and the circular hole 43 is in clearance fit with the sleeve 3, the positioning sleeve 4 is provided with a bushing accommodating cavity 41, and two notches B42 are uniformly arranged on one end of the positioning sleeve 4 away from the circular hole 43 in the circumferential direction. The bushing accommodating cavity 41 is arranged in the positioning sleeve 4, so as to accommodate the slide valve bushing in the slide valve during pulling out the slide valve from the shell, to avoid the interference between the slide valve bushing and the positioning sleeve 4.

[0030] The working principle of the slide valve pulling tool is as follows: when it is needed to pull out the slide valve from the shell, first, the expansion sleeve 1 of the tool is inserted into the inner hole of the slide valve, then the nut 7 is rotated by holding the two pins 8 with hands, the pull rod 2 is moved in the axial direction relative to the expansion sleeve 1 and away from the slide valve, so as to gradually expand the expansion sleeve 1 and tension the slide valve, then the screw sleeve 5 is rotated by holding the handle 9 with hands, the positioning sleeve 4 is pushed to move along the sleeve 3 in the axial direction and close to the shell, when the positioning sleeve 4 contacts with the shell, the screw sleeve 5 is continuously rotated by using the handle 9, the shell reacts on the expansion sleeve 1 through the positioning sleeve 4, the screw sleeve 5, the sleeve 3, the nut 7 and the pull rod 2, so as to pull out the expansion sleeve 1 and the slide valve from the shell.

Claims

1. A tooling for removing and unloading a slide valve, characterized in that: The assembly includes a pull rod (2) and a pulling component. The pull rod (2) is provided with a tension drive component, a sleeve (3) and a tension sleeve (1) in sequence along the axial direction. The tension drive component is threadedly connected to the pull rod (2). The sleeve (3) is slidably connected to the pull rod (2). The pull rod (2) has only the axial movement degree of freedom relative to the sleeve (3). The pulling component is fitted on the sleeve (3) and threadedly connected to the sleeve (3).

2. The slide valve removal tooling as described in claim 1, characterized in that: Both ends of the expansion sleeve (1) are provided with inner conical surfaces (12), and the small ends of the inner conical surfaces (12) at both ends of the expansion sleeve (1) are close to each other. Both ends of the expansion sleeve (1) are provided with multiple slots A (11) evenly distributed in the circumferential direction.

3. The slide valve removal tooling as described in claim 2, characterized in that: One end of the pull rod (2) is provided with an outer conical surface A (22), and the outer conical surface A (22) is in contact with the inner conical surface (12) on the expansion sleeve (1) that is away from the sleeve (3).

4. The slide valve removal tooling as described in claim 2, characterized in that: The sleeve (3) has an outer conical surface B (31) at one end near the expansion sleeve (1), and the outer conical surface B (31) is in contact with the inner conical surface (12) of the expansion sleeve (1) near the sleeve (3).

5. The slide valve removal tool as described in claim 1, characterized in that: The pull rod (2) has a groove (21) along the axial direction on the outer circle, and the sleeve (3) has a threaded hole (32) along the radial direction. The threaded hole (32) is connected to a limit pin (6) by a thread. One end of the limit pin (6) extends into the groove (21), and the diameter of the limit pin (6) is adapted to the width of the groove (21).

6. The slide valve removal tooling as described in claim 1, characterized in that: The tensioning drive assembly includes a nut (7), which is threadedly connected to the pull rod (2), and the nut (7) is provided with two pins (8).

7. The slide valve removal tooling as described in claim 6, characterized in that: The nut (7) has two through holes along the radial direction, and the two through holes are arranged coaxially. One end of each of the two pins (8) is inserted into the two through holes and is either transitionally fitted or interference-fitted with the through holes.

8. The slide valve removal tooling as described in claim 1, characterized in that: The pulling assembly includes a threaded sleeve (5) and a positioning sleeve (4). The threaded sleeve (5) is threadedly connected to the sleeve (3). The positioning sleeve (4) is movably fitted onto the sleeve (3) and is located on the side of the threaded sleeve (5) near the expansion sleeve (1).

9. The slide valve removal tooling as described in claim 8, characterized in that: Multiple handles (9) are evenly distributed in the circumferential direction on the threaded sleeve (5).

10. The slide valve removal tooling as described in claim 8, characterized in that: One end of the positioning sleeve (4) is provided with a round hole (43), and the round hole (43) is in clearance fit with the sleeve (3). The positioning sleeve (4) is provided with a bushing receiving cavity (41), and two slots B (42) are evenly distributed in the circumferential direction on the end of the positioning sleeve (4) away from the round hole (43).

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