Valve seat ring pulling-out tool of V-shaped cylinder cover

Abstract

The utility model relates to the technical field of extractors, in particular to a valve seat ring extraction tool for a V-shaped cylinder cover, which comprises an extractor and an extractor. Supporting plates are symmetrically arranged at the left end of the base plate, the extractor comprises a reinforcing column and a guide rod, inserting feet are arranged at the positions, close to the two ends, of the lower surface of the reinforcing column, a convex column is arranged in the middle of the top of the reinforcing column, a rolling shaft is arranged in the middle of the convex column, an upper nut, a lower nut and a broach are sequentially arranged on the guide rod from top to bottom, and a pull head is arranged at the bottom of the guide rod; according to the tool for pulling out the valve seat ring of the V-shaped cylinder cover, the plug pin is matched with the puller, the plug pin is matched with the slot in an inserted mode, under the matching of the inclined face, the puller vertically corresponds to the inclined face of the V-shaped cylinder cover, under the matching of the guide rod with the broach, the valve seat ring on the V-shaped cylinder cover is correspondingly matched in an inserted mode, and the stop rod is rotated, so that the valve seat ring is pulled out. The broach on the puller is clamped and matched with the valve seat ring, and the valve seat ring is taken out and replaced stably.

Description

Technical Field

[0001] This utility model relates to the field of pull-out tool technology, specifically a valve seat pull-out tool for a V-shaped cylinder head. Background Technology

[0002] The valve seat ring is press-fitted into the cylinder head by an interference fit. For V-type cylinder heads, the valve seat ring is installed at an angle, and disassembly and removal are time-consuming and laborious.

[0003] Utility model patent CN212170271U discloses a valve seat disassembly fixture. The clamping shaft has external threads and a locking sleeve. A stop block is located at the lower end of the shaft, and a positioning rod is located at the bottom of the stop block. The clamping shaft, stop block, and positioning rod are integrally cast. The locking sleeve has a cylindrical structure with an external limiting protrusion and multiple through-holes on its sidewall, dividing the locking sleeve into arc-shaped plate-like components. The fixing rod includes a vertical rod and a horizontal rod. The end of the vertical rod is equipped with a valve guide rod, and the end of the horizontal rod is fixedly connected to the sidewall of a horizontally positioned limiting ring. The valve guide rod, limiting ring, and fixing rod are integrally cast. The limiting ring is fitted onto the outer side of the upper end of the locking sleeve.

[0004] The above technical solution relies on the principle of expansion to clamp the valve seat ring and pull it out. The valve seat ring can be completely removed without damaging the contact surface between the valve seat ring and the cylinder head, ensuring the accuracy of the test verification. The entire set of equipment can be used together to fully meet the usage requirements. However, it is not convenient to quickly and stably remove and fit the valve seat ring on the V-shaped cylinder head using the puller. The two feet on the puller are not easy to stably and smoothly fit with the V-shaped cylinder head, increasing the difficulty of disassembly. Utility Model Content

[0005] The purpose of this invention is to provide a valve seat pull-out tool for a V-shaped cylinder head to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A valve seat pull-out tool for a V-shaped cylinder head includes a puller and a bottom-mounted pad. A support plate is symmetrically positioned on the left end of the pad. An inclined surface is located on the top of the support plate near the pad, and slots are formed on the inclined surface. The puller includes a reinforcing post and a guide rod. The lower surface of the reinforcing post has pins near both ends. A protruding post is located in the middle of the top of the reinforcing post, and a rolling shaft is located in the middle of the protruding post. A threaded hole is formed at the top of the rolling shaft. The guide rod is threadedly connected to the threaded hole. From top to bottom, the guide rod has an upper nut, a lower nut, and a puller. A pull head is located at the bottom of the guide rod.

[0008] Preferably, the pad has a plurality of positioning holes, the support plate and the pad are integrally formed, and the length of the positioning hole is greater than the inner diameter of the pin.

[0009] In this invention, the combination of multiple positioning holes facilitates the passage of external screws, enabling the pad to fit snugly against the V-shaped cylinder head, and the screws fix the pad in a limiting fit with the V-shaped cylinder head.

[0010] Preferably, the pin and the reinforcing post are integrally formed, and the protruding post and the reinforcing post are integrally formed.

[0011] In this invention, the pins facilitate the insertion and engagement of the pins with the corresponding slots, enabling quick assembly and installation of the puller and the pad. The integrated molding structure increases structural stability.

[0012] Preferably, the rolling shaft is bonded and fixed to the protrusion, and the diameter of the guide rod is adapted to the inner diameter of the screw hole.

[0013] In this invention, the rolling shaft facilitates the threaded connection between the guide rod and the rolling shaft, enabling the guide rod to move up and down within the reinforcing column.

[0014] Preferably, the guide rod is provided with a stop rod at the top, the stop rod is inserted into the guide rod, and the upper nut and lower nut are threadedly connected to the guide rod.

[0015] In this invention, the stop rod provides a point of force, facilitating the rotation and adjustment of the guide rod. The upper and lower nuts help to limit the position of the guide rod on the reinforcing column.

[0016] Preferably, the bottom of the guide rod is welded and fixed to the pull head, and the pull knife is sleeved on the guide rod and slidably connected to the guide rod.

[0017] In this invention, the pull head helps to adjust the opening or closing position of the pull blade.

[0018] Preferably, the pull cutter is composed of three segments, and the outer wall of the pull cutter is symmetrically provided with cutting edges, and the cutting edges and the pull cutter are integrally formed.

[0019] In this invention, the three-part plate helps the puller to achieve uniform expansion with the puller head and the blade edge, thus enabling the valve seat to be snapped into place. After snapping, the valve seat can be removed.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This utility model, by setting the pins and puller together, facilitates the insertion and engagement with the support plate on the pad, and the pins and slots engage. With the engagement of the inclined surface, the puller is perpendicular to the inclined surface of the V-shaped cylinder head. With the engagement of the guide rod with the puller, the valve seat ring on the V-shaped cylinder head is correspondingly engaged. Rotating the stop rod enables the puller on the puller head to engage with the valve seat ring, allowing the valve seat ring to be smoothly removed and replaced.

[0022] 2. This utility model, by setting a positioning hole through which an external screw passes, helps the pad and V-shaped cylinder head to be stably engaged and placed. With the cooperation of the upper nut and the lower nut, it helps to limit the position of the guide rod on the reinforcing column. The upper nut moves upward and cooperates with the stop rod to achieve the downward engagement of the stop rod. The pull head is inserted into the pull cutter, and through the depth of insertion, the pull cutter expands to achieve a tight engagement with the valve seat. Attached Figure Description

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the pad structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the pull-out device structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the reinforced column structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the combined structure of the guide rod and the puller of this utility model.

[0028] The meaning of each number in the figure is:

[0029] 1. Puller; 10. Reinforcing post; 100. Pin; 11. Protruding post; 110. Rolling shaft; 111. Screw hole; 12. Guide rod; 120. Stop rod; 121. Upper nut; 122. Lower nut; 123. Pull head; 124. Pull cutter; 125. Blade;

[0030] 2. Pad; 20. Positioning hole; 21. Support plate; 210. Bevel; 211. Slot. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-Figure 5 This embodiment provides a technical solution:

[0033] A valve seat pull-out tool for a V-shaped cylinder head includes a puller 1 and a bottom insert plate 2. The plate 2 has several positioning holes 20. The support plate 21 and the plate 2 are integrally formed. The length of the positioning hole 20 is greater than the inner diameter of the insert 100.

[0034] In this utility model, the cooperation of multiple positioning holes 20 facilitates the passage of external screws, enabling the pad 2 to fit snugly against the V-shaped cylinder head, and the screws fix the pad 2 in a limited fit with the V-shaped cylinder head.

[0035] It should be noted that the left end of the pad 2 is symmetrically provided with a support plate 21. The top of the support plate 21 is provided with an inclined surface 210 near the pad 2. Each inclined surface 210 is provided with a slot 211. The puller 1 includes a reinforcing post 10 and a guide rod 12. The lower surface of the reinforcing post 10 is provided with a pin 100 near both ends. The pad 2 is provided with several positioning holes 20. The support plate 21 and the pad 2 are integrally formed. The length of the positioning hole 20 is greater than the inner diameter of the pin 100.

[0036] In this utility model, the cooperation of multiple positioning holes 20 facilitates the passage of external screws, enabling the pad 2 to fit snugly against the V-shaped cylinder head, and the screws fix the pad 2 in a limited fit with the V-shaped cylinder head.

[0037] Furthermore, a protruding post 11 is provided at the middle of the top of the reinforcing post 10, and a rolling shaft 110 is provided in the middle of the protruding post 11. A screw hole 111 is opened at the top of the rolling shaft 110. The guide rod 12 is threadedly connected to the screw hole 111. The rolling shaft 110 is bonded and fixed to the protruding post 11. The diameter of the guide rod 12 is adapted to the inner diameter of the screw hole 111.

[0038] In this invention, the cooperation of the rolling shaft 110 helps the guide rod 12 to be threadedly connected to the rolling shaft 110, thereby enabling the guide rod 12 to move up and down within the reinforcing column 10.

[0039] Specifically, the guide rod 12 is provided with an upper nut 121, a lower nut 122, and a puller 124 from top to bottom, and a pull head 123 is provided at the bottom of the guide rod 12.

[0040] Secondly, a stop rod 120 is provided at the top of the guide rod 12. The stop rod 120 is inserted into the guide rod 12, and the upper nut 121 and the lower nut 122 are threadedly connected to the guide rod 12.

[0041] In this utility model, the stop rod 120 provides a point of force to facilitate the rotation and adjustment of the guide rod 12, and the upper nut 121 and the lower nut 122 help to limit the position of the guide rod 12 on the reinforcing column 10.

[0042] It is worth adding that the bottom of the guide rod 12 is welded and fixed to the pull head 123, and the pull knife 124 is sleeved on the guide rod 12 and slidably connected to the guide rod 12.

[0043] In this invention, the pull head 123, in conjunction with the pull blade 124, helps to adjust the position of the pull blade 124 when it opens or closes.

[0044] Furthermore, the broach 124 is composed of three segments, and the outer wall of the broach 124 is symmetrically provided with cutting edges 125. The cutting edges 125 and the broach 124 are integrally formed.

[0045] In this invention, the cooperation of the three-lobed plates helps the puller 124, with the cooperation of the puller head 123, to achieve uniform expansion and, with the cooperation of the blade 125, to achieve the engagement of the valve seat ring. After engagement, the valve seat ring can be removed.

[0046] When using the valve seat pull-out tool for the V-shaped cylinder head in this embodiment, the user first puts the puller 124 with the blade 125 on the guide rod 12, and the lower nut 122 is threaded to the guide rod 12. Then, the guide rod 12 is inserted into the rolling shaft 110, and the upper nut 121 is threaded to the guide rod 12. Then, the stop rod 120 is inserted into the top of the guide rod 12. The reinforcing column 10 is inserted into the slot 211 on the support plate 21 through the pin 100.

[0047] When it is necessary to remove the valve seat rings on the V-shaped cylinder head, the external screw passes through the positioning hole 20 to achieve a horizontal and tight engagement between the pad 2 and the V-shaped cylinder head. Then, the reinforcing post 10 is placed on the inclined surface 210, and the insert 100 slides into the slot 211 to limit the position of the puller 1, preventing the reinforcing post 10 from rotating when the guide rod 12 is rotated. The puller 124 passes through the corresponding valve seat ring with the cooperation of the guide rod 12. The distance between the lower nut 122 and the upper nut 121 is manually adjusted, and the lower nut 122 moves down, allowing the puller head 123 to enter the puller 124. The extended cutting edge 125 of the puller 124 engages with the corresponding valve seat ring. Then, the stop rod 120 is manually rotated, and the guide rod 12 rotates and moves up in the reinforcing post 10 to engage and remove the valve seat rings on the V-shaped cylinder head. The assembly and installation are convenient and easy to operate manually.

Claims

1. A valve seat pull-out tool for a V-shaped cylinder head, comprising a puller (1) and a bottom-mounted pad (2), characterized in that: The pad (2) is symmetrically provided with a support plate (21) on the left end. The top of the support plate (21) is provided with an inclined surface (210) near the pad (2). The inclined surface (210) is provided with slots (211). The puller (1) includes a reinforcing post (10) and a guide rod (12). The lower surface of the reinforcing post (10) is provided with pins (100) near both ends. The top of the reinforcing post (10) is provided with a protruding post (11) in the middle. The protruding post (11) is provided with a rolling shaft (110) in the middle. The top of the rolling shaft (110) is provided with a screw hole (111). The guide rod (12) is threadedly connected to the screw hole (111). The guide rod (12) is provided with an upper nut (121), a lower nut (122), and a puller (124) from top to bottom. The bottom of the guide rod (12) is provided with a pull head (123).

2. The valve seat pull-out tool for the V-shaped cylinder head according to claim 1, characterized in that: The pad (2) has several positioning holes (20), the support plate (21) and the pad (2) are integrally formed, and the length of the positioning hole (20) is greater than the inner diameter of the pin (100).

3. The valve seat pull-out tool for the V-shaped cylinder head according to claim 1, characterized in that: The pin (100) and the reinforcing post (10) are integrally formed, and the protruding post (11) and the reinforcing post (10) are integrally formed.

4. The valve seat pull-out tool for the V-shaped cylinder head according to claim 1, characterized in that: The rolling shaft (110) is bonded and fixed to the protrusion (11), and the diameter of the guide rod (12) is adapted to the inner diameter of the screw hole (111).

5. The valve seat pull-out tool for the V-shaped cylinder head according to claim 1, characterized in that: The guide rod (12) is provided with a stop rod (120) at the top. The stop rod (120) is inserted into the guide rod (12). The upper nut (121) and the lower nut (122) are threadedly connected to the guide rod (12).

6. The valve seat pull-out tool for the V-shaped cylinder head according to claim 1, characterized in that: The bottom of the guide rod (12) is welded and fixed to the pull head (123), and the pull knife (124) is sleeved on the guide rod (12) and slidably connected to the guide rod (12).

7. The valve seat pull-out tool for the V-shaped cylinder head according to claim 1, characterized in that: The pull cutter (124) is composed of three segments, and the outer wall of the pull cutter (124) is symmetrically provided with cutting edges (125). The cutting edges (125) and the pull cutter (124) are integrally formed.

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