Quenching piston pin hole cover

Abstract

The utility model relates to the technical field of quenching piston pins, and discloses a quenching piston pin hole cover which comprises a piston pin body, a through hole is formed in the piston pin body, cover net frames and locking fasteners used for fixing the cover net frames are arranged at the upper end and the lower end of the piston pin body respectively, a dustproof hole cover is arranged in each cover net frame, and a through hole is formed in each dustproof hole cover. The lock catch piece comprises three buckle frames and elastic pieces for pushing and pressing the lower ends of the buckle frames downwards, the upper ends of the buckle frames clamp the cover net frame, and positioning pieces for fixing the upper ends of the buckle frames are installed on the inner side of the cover net frame. The utility model has the advantages and effects of convenient disassembly and maintenance, and stable installation.

Description

Technical Field

[0001] The utility model relates to the technical field of quenching piston pins, in particular to a quenching piston pin hole cover. Background Art

[0002] The piston pin is a cylindrical pin installed on the piston skirt. Its middle part passes through the small end hole of the connecting rod and is used to connect the piston and the connecting rod. Its function is to transmit the gas force borne by the piston to the connecting rod, or to make the small end of the connecting rod drive the piston to move together. Because there is a through hole inside it, it is inevitable that dust produced by combustion will be produced during the quenching process.

[0003] In order to prevent excessive combustion dust from accumulating in the through hole during the quenching process and affecting the quenching effect, escutcheons need to be installed at both ends of the piston pin. However, the escutcheons are generally fixed by bolts in the prior art. To ensure the normal use of the piston pin, the escutcheons need to be replaced and cleaned regularly, which means that the staff need to use tools to disassemble them during each maintenance process, which is quite troublesome. In addition, the fixing method of bolts and nuts is prone to rust and thread stripping, which leads to maintenance troubles. Therefore, it is necessary to propose a quenching piston pin escutcheon to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a quenched piston pin hole cover, which has the effects of convenient disassembly and maintenance and stable installation.

[0005] The above technical purpose of the present utility model is achieved through the following technical solutions: a quenched piston pin hole cover, including a piston pin body, a through hole is opened in the piston pin body, a cover grid and a locking piece for fixing the cover grid are provided at the upper and lower ends of the piston pin body, a dustproof hole cover is provided inside the cover grid, the locking piece includes three buckles and an elastic piece that pushes the lower end of the buckle frame downward, the upper end of the buckle frame is fixed to the cover grid, and a positioning piece for fixing the upper end of the buckle frame is installed on the inner side of the cover grid.

[0006] By adopting the above technical solution, the buckle frame is pushed up to compress the elastic part, and the upper end of the buckle frame is separated from the cover grid frame. The three buckles that restrict the cover grid frame can be quickly removed, thereby facilitating the disassembly of the cover grid frame and the cleaning and maintenance of the dust hole cover.

[0007] The utility model is further configured as follows: the elastic member comprises a fixing block arranged on the outer wall of the end portion of the piston pin body, a column is fixedly mounted on the fixing block, and a spring is sleeved on the outer side of the column.

[0008] By adopting the above technical solution, when pushing up the buckle frame, its lower end slides up on the column and squeezes the spring, so that the upper end of the buckle frame is separated from the cover grid, thereby realizing the disassembly of the cover grid.

[0009] The present invention is further configured as follows: a through hole is provided at the lower end of the buckle frame and is adapted to slide with the column, and the bottom of the buckle frame abuts against the lower end of the spring.

[0010] By adopting the above technical solution, the lower end of the buckle frame can slide smoothly on the column and can stably push the spring.

[0011] The present invention is further configured as follows: the side surface of the buckle frame is configured to be L-shaped, and three of the buckle frames are equidistantly arranged on the outer wall of the end portion of the piston pin body.

[0012] By adopting the above technical solution, the cover grid as a whole can be more stably installed on the end of the piston pin body, thereby improving the stability of the installation.

[0013] The present invention is further configured as follows: the positioning member comprises a connecting block arranged at one end of the buckle frame away from the column, and a rotating frame for pressing the connecting block is arranged in the cover grid.

[0014] By adopting the above technical solution, after the buckle frame is installed, the connecting block is positioned by the rotating frame so that the upper end of the buckle frame is positioned, thereby improving the stability of the buckle frame installation and further improving the fixing effect of the cover grid.

[0015] The present invention is further configured as follows: the number of the rotating frames is three and the rotating frames are equidistantly arranged inside the cover grid, and the lower ends of the rotating frames are rotatably connected to the cover grid.

[0016] By adopting the above technical solution, each buckle frame is stably limited.

[0017] The utility model is further configured as follows: slide grooves are provided on both sides of the buckle frame away from one end of the column, and sliders located on both sides of the column and slidingly adapted to the slide grooves are fixedly installed on the side walls of the inner cavity of the cover grid.

[0018] By adopting the above technical solution, after the upper end of the buckle frame is buckled and placed on the inner side of the cover grid, the sliders on both sides are inserted into the slide grooves to position the buckle frame, making the buckle frame installation more stable.

[0019] The present invention is further configured as follows: three positioning pins are circumferentially arranged on both ends of the piston pin body, and positioning holes adapted to the three positioning pins are provided on the cover grid.

[0020] By adopting the above technical solution, when the cover grid is placed on the end of the piston pin body, the positioning pin is inserted into the corresponding positioning hole, so that the cover grid is better positioned to prevent deviation or rotation.

[0021] The utility model is further configured as follows: the lower end of the outer side of the positioning pin is configured as a threaded end, and the end of the piston pin body is further provided with a threaded groove adapted to the threaded end.

[0022] By adopting the above technical solution, the locating pin can be rotated to be inserted into or removed from the piston pin body, thereby facilitating assembly.

[0023] The utility model is further configured as follows: the dustproof hole cover is in close contact with the end surface of the through hole, and the diameter thereof is adapted to the through hole.

[0024] By adopting the above technical solution, the dustproof hole cover can better cover the through hole, and its dustproof effect is more ideal.

[0025] The beneficial effects of the utility model are:

[0026] 1. The utility model pushes up the buckle frame, compresses the spring at its lower end, and separates the upper end from the limit on the edge of the cover grid. The three buckle frames on the periphery are removed, and the corresponding cover grid and the dust hole cover can be quickly removed as a whole. The entire disassembly process does not require the use of other tools, and the disassembly and assembly are very quick and convenient, which is convenient for daily maintenance and use.

[0027] 2. The utility model can make the installation of the cover grid more stable through the cooperation of the positioning holes and the positioning pins, and lock the connecting blocks through the rotation of the rotating frame, so that the buckle frame can be installed on the cover grid more stably, making the installation of the cover grid and the dust hole cover more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is an overall structural diagram of a quenched piston pin hole cover of the utility model.

[0030] Figure 2 This utility model Figure 1 The overall structure diagram of the middle cover grid.

[0031] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0032] Figure 4 This utility model Figure 1 The overall structure diagram of the center lock fastener.

[0033] Figure 5 This utility model Figure 1 Installation structure diagram of the center positioning pin.

[0034] In the figure, 1. piston pin body; 2. through hole; 3. cover grid; 31. dust hole cover; 4. locking piece; 41. buckle frame; 42. fixing block; 43. column; 44. spring; 45. connecting block; 46. rotating frame; 47. slider; 5. positioning pin; 51. threaded end; 6. positioning hole. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0036] like Figures 1 to 5 As shown, a quenched piston pin hole cover comprises a piston pin body 1, a through hole 2 is opened in the piston pin body 1, a cover grid 3 and a locking member 4 for fixing the cover grid 3 are provided at the upper and lower ends of the piston pin body 1, a dustproof hole cover 31 is provided inside the cover grid 3, the locking member 4 comprises three buckles 41 and an elastic member that pushes the lower end of the buckle frame 41 downward, the upper end of the buckle frame 41 clamps the cover grid 3, and a positioning member that fixes the upper end of the buckle frame 41 is installed on the inner side of the cover grid 3.

[0037] Furthermore, the elastic member includes a fixing block 42 provided on the outer wall of the end of the piston pin body 1 , a column 43 is fixedly mounted on the fixing block 42 , and a spring 44 is sleeved on the outer side of the column 43 .

[0038] Furthermore, a through hole is provided at the lower end of the buckle frame 41 and is slidably fitted with the column 43 , and the bottom of the buckle frame 41 abuts against the lower end of the spring 44 .

[0039] Furthermore, the side surface of the buckle bracket 41 is configured to be L-shaped, and three of the buckle brackets 41 are equidistantly arranged on the outer wall of the end of the piston pin body 1 .

[0040] Furthermore, the positioning member includes a connecting block 45 provided at one end of the buckle frame 41 away from the column 43 , and a rotating frame 46 for pressing the connecting block 45 is provided in the cover grid 3 .

[0041] Furthermore, the number of the rotating frames 46 is three and they are equidistantly arranged inside the cover grid 3 circumferentially, and the lower ends of the rotating frames 46 are rotatably connected to the cover grid 3 .

[0042] Furthermore, both sides of the buckle frame 41 away from the end of the column 43 are provided with sliding grooves, and the side walls of the inner cavity of the cover grid 3 are fixedly installed with sliders 47 located on both sides of the column 43 and slidably adapted to the sliding grooves.

[0043] Furthermore, three positioning pins 5 are circumferentially arranged at both ends of the piston pin body 1 , and positioning holes 6 adapted to the three positioning pins 5 are provided on the cover grid 3 .

[0044] Furthermore, the lower end of the outer side of the positioning pin 5 is set as a threaded end 51, and the end of the piston pin body 1 is also provided with a threaded groove adapted to the threaded end 51.

[0045] Furthermore, the dustproof hole cover 31 is in close contact with the end surface of the through hole 2 , and its diameter is adapted to the through hole 2 .

[0046] The working principle of the present invention is: first, rotate the rotating frame 46 to disengage it from the connecting block 45, push up the buckle frame 41, and its bottom slides on the column 43 and compresses the spring 44, so that the three buckle frames 41 can be detached from the cover grid 3 as a whole very conveniently, so that the cover grid 3 at both ends can be quickly separated from the piston pin body 1.

Claims

1. A quenched piston pin hole cover, comprising a piston pin body (1), characterized in that: A through hole (2) is provided in the piston pin body (1), and a cover frame (3) and a locking member (4) for fixing the cover frame (3) are provided at both upper and lower ends of the piston pin body (1). A dustproof hole cover (31) is provided inside the cover frame (3), and the locking member (4) includes three buckle frames (41) and an elastic member for pushing the lower end of the buckle frame (41) downward. The upper end of the buckle frame (41) clamps the cover frame (3), and a positioning member for fixing the upper end of the buckle frame (41) is installed on the inner side of the cover frame (3).

2. The quenched piston pin hole cover according to claim 1, characterized in that: The elastic member comprises a fixed block (42) arranged on the outer wall of the end of the piston pin body (1); a column (43) is fixedly mounted on the fixed block (42); and a spring (44) is sleeved on the outer side of the column (43).

3. The quenched piston pin hole cover according to claim 2, characterized in that: The lower end of the buckle frame (41) is provided with a through hole that is slidably matched with the column (43), and the bottom of the buckle frame (41) is in contact with the lower end of the spring (44).

4. The quenched piston pin hole cover according to claim 3, characterized in that: The side surface of the buckle frame (41) is arranged in an L-shape, and three buckle frames (41) are equidistantly arranged on the outer wall of the end of the piston pin body (1).

5. The quenched piston pin hole cover according to claim 4, characterized in that: The positioning member comprises a connecting block (45) arranged at one end of the buckle frame (41) away from the column (43), and a rotating frame (46) for pressing the connecting block (45) is arranged in the cover grid frame (3).

6. The quenched piston pin hole cover according to claim 5, characterized in that: The number of the rotating frames (46) is three and they are equidistantly arranged inside the cover grid (3). The lower ends of the rotating frames (46) are rotatably connected to the cover grid (3).

7. The quenched piston pin hole cover according to claim 6, characterized in that: Slide grooves are provided on both sides of the buckle frame (41) away from the end of the column (43), and sliding blocks (47) located on both sides of the column (43) and slidingly adapted to the slide grooves are fixedly installed on the side walls of the inner cavity of the cover grid (3).

8. The quenched piston pin hole cover according to claim 1, characterized in that: Three positioning pins (5) are circumferentially arranged at both ends of the piston pin body (1), and positioning holes (6) adapted to the three positioning pins (5) are arranged on the cover grid (3).

9. The quenched piston pin hole cover according to claim 8, characterized in that: The lower end of the outer side of the positioning pin (5) is provided as a threaded end (51), and the end of the piston pin body (1) is also provided with a threaded groove adapted to the threaded end (51).

10. The quenched piston pin hole cover according to claim 1, characterized in that: The dustproof hole cover (31) is in close contact with the end surface of the through hole (2), and its diameter is adapted to that of the through hole (2).

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