High-strength cast aluminum piston

Abstract

The utility model relates to the technical field of cast aluminum pistons, in particular to a high-strength cast aluminum piston which comprises a connecting rod body, a piston body and a through groove, an abutting shock absorption mechanism is arranged above the piston body, a portable replacement mechanism is arranged in the piston body, a supporting protection mechanism is arranged above the abutting shock absorption mechanism, and the supporting protection mechanism is arranged in the piston body. When the high-strength cast aluminum piston is used and the piston slides and collides during normal operation, the collision block firstly bears collision force to drive the supporting piece to slide in the supporting column, then the supporting piece collides with the spring to contract, and therefore the collision buffering effect on impact force is achieved in the acting process; and furthermore, the detachable design of the abutting block is matched, when the abutting block is excessively abraded, a new abutting block is directly replaced, the piston can work normally, the whole piston does not need to be replaced, the overall practical effect is good, and the protection performance is excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of cast aluminum pistons, in particular to a high-strength cast aluminum piston. Background Art

[0002] Cast aluminum piston is a mechanical part, commonly found in the cylinder of an internal combustion engine, used to seal with the piston ring and cylinder wall and convert fuel energy into mechanical energy. Cast aluminum piston is usually made of aluminum alloy material through casting, and can withstand high temperature and high pressure working environment. The manufacturing process and material selection of cast aluminum piston will directly affect the quality and performance of the piston;

[0003] Since the surface hardness of the cast aluminum piston is relatively low, it is easily affected by friction or wear. At the same time, due to the poor strength and wear resistance of the cast aluminum piston, its service life is relatively short and it needs to be replaced frequently. The replacement is troublesome and will affect the normal operation of the device. However, the existing device has not made improvements to this problem, and the overall practical effect is poor. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problem and to propose a high-strength cast aluminum piston, which improves the existing cast aluminum piston with low surface hardness and is easily affected by friction or wear. At the same time, due to the poor strength and wear resistance of the cast aluminum piston, its service life is relatively short and it needs to be replaced frequently, which is troublesome and affects the normal operation of the device.

[0005] A high-strength cast aluminum piston comprises a connecting rod body, a piston body and a through groove: the connecting rod body is installed inside the piston body, a resistance shock-absorbing mechanism is arranged above the piston body, a portable disassembly mechanism is arranged inside the piston body, a support and protection mechanism is arranged above the resistance shock-absorbing mechanism, the resistance shock-absorbing mechanism comprises a support column, a support member and a resistance spring, a support column is arranged on the top outer wall of the piston body, the support column is arranged as a cavity structure, and a support member is slidably installed inside the support column, the support member is arranged in an "I" shape, the lower half of the support member is slidably installed inside the support column, the upper half of the support member is arranged outside the support column, and a resistance spring is connected between the bottom outer wall of the support member and the bottom inner wall of the support column.

[0006] Preferably, the portable disassembly and replacement mechanism comprises a piston pin and a threaded ring, a piston pin is arranged inside a bushing at the top end of the connecting rod body, and threaded rings are symmetrically arranged on the outer walls on both sides of the piston pin.

[0007] Preferably, a mounting ring is provided on the side of the threaded ring, and a threaded groove is provided on the inner wall of the side of the mounting ring.

[0008] Preferably, an abutment ring is provided on the inner wall of the bottom end of the mounting ring, and threaded mounting is performed between the threaded ring and the threaded groove.

[0009] Preferably, the interference clamp ring and the threaded ring are snap-fitted together, and the mounting ring and the through groove are snap-fitted together.

[0010] Preferably, the supporting and protecting mechanism comprises a mounting groove, the supporting member is divided into an upper half and a lower half, and a mounting groove is provided on the top outer wall of the supporting member in the upper half.

[0011] Preferably, a resistance block is arranged above the support member, and the outer wall at the top end of the resistance block is arranged as an arc-shaped mechanism.

[0012] Preferably, a threaded column is provided on the outer wall of the bottom end of the abutment block, and a threaded installation is performed between the threaded column and the installation groove.

[0013] The beneficial effects of the utility model are:

[0014] 1. When the high-strength cast aluminum piston is in use, through the arrangement of the support column, the support member and the resistance spring, when the piston is in normal working operation and sliding resistance, the resistance block will first be driven by the resistance force to slide the support member inside the support column, and then the resistance spring of the support member will contract, so that the impact force is resisted and buffered during the working process, thereby reducing the impact of the impact force on the piston body. In addition, with the detachable design of the resistance block, when the resistance block is too worn, a new resistance block can be directly replaced to make the piston work normally, without replacing the entire piston, and the overall practical effect is good, and the protection performance is excellent;

[0015] 2. When the high-strength cast aluminum piston is in use, since the prior art connects the piston and the connecting rod by means of a retaining ring, and the use of a single retaining ring easily causes the piston pin to fall off during installation, the piston pin, the threaded ring, the mounting ring, the threaded groove and the abutting retaining ring are arranged, and the threaded connection relationship between the mounting ring and the threaded ring is coordinated with the engagement relationship between the abutting retaining ring and the threaded ring, so that the device can be portable to complete the positioning and installation of the piston pin. Compared with the prior art which uses a single retaining ring to install the piston pin, this design is more stable and has a better installation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall explosion three-dimensional structure of the utility model;

[0018] Figure 3 It is a three-dimensional structural diagram of the impact damping mechanism of the utility model;

[0019] Figure 4This is a three-dimensional structural diagram of the portable disassembly and replacement mechanism of the utility model;

[0020] Figure 5 For the utility model Figure 4 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the support and protection mechanism of the utility model.

[0022] In the figure: 1. connecting rod body; 2. piston body; 3. through groove; 4. interference shock absorbing mechanism; 41. support column; 42. support member; 43. interference spring; 5. portable replacement mechanism; 51. piston pin; 52. threaded ring; 53. mounting ring; 54. threaded groove; 55. interference snap ring; 6. support and protection mechanism; 61. mounting groove; 62. interference block; 63. threaded column. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] When implementing: Figure 1-6 As shown, a high-strength cast aluminum piston comprises a connecting rod body 1, a piston body 2 and a through groove 3: the connecting rod body 1 is installed inside the piston body 2, a resistance damping mechanism 4 is arranged above the piston body 2, a portable replacement mechanism 5 is arranged inside the piston body 2, a support protection mechanism 6 is arranged above the resistance damping mechanism 4, the resistance damping mechanism 4 comprises a support column 41, a support member 42 and a resistance spring 43, a support column 41 is arranged on the top outer wall of the piston body 2, the support column 41 is arranged as a cavity structure, and a support member 42 is slidably installed inside the support column 41, and the support member 42 It is arranged in an "I" shape, the lower half of the support member 42 is slidably installed inside the support column 41, the upper half of the support member 42 is arranged outside the support column 41, and a resistance spring 43 is connected between the bottom outer wall of the support member 42 and the bottom inner wall of the support column 41; when the piston body 2 is slidingly resisted during normal operation, the resistance block 62 is automatically driven by the resistance force to slide inside the support column 41, and then the resistance spring 43 is gradually contracted by the squeezing action of the support member 42, thereby achieving the effect of buffering and shock absorption, thereby protecting the piston body 2.

[0025] The portable disassembly and replacement mechanism 5 includes a piston pin 51 and a threaded ring 52. The piston pin 51 is arranged inside the bushing at the top of the connecting rod body 1, and the threaded rings 52 are symmetrically arranged on the outer walls of both sides of the piston pin 51. The side of the threaded ring 52 is provided with a mounting ring 53, and the side inner wall of the mounting ring 53 is provided with a threaded groove 54. The bottom inner wall of the mounting ring 53 is provided with a conflicting snap ring 55. The threaded ring 52 and the threaded groove 54 are threadedly installed, the conflicting snap ring 55 and the threaded ring 52 are snap-fitted, and the mounting ring 53 and the through groove 3 are snap-fitted. When it is necessary to remove the connecting rod body 1 from the inside of the piston body 2, it is only necessary to unscrew the mounting ring 53 from the outside of the threaded ring 52. At this time, the piston pin 51 changes from a locked state to an active state, and then the piston pin 51 is pulled out from the inside of the bushing at the top of the connecting rod body 1. The setting of the through groove 3 here provides space for the installation and removal of the piston pin 51. During installation, it is first necessary to adjust the connecting rod body 1 to a suitable position and insert it into the inside of the piston body 2. Then, the piston pin 51 is passed through the inside of the bushing at the top of the connecting rod body 1, and then the mounting rings 53 are screwed to the outside of the threaded rings 52 at both ends of the piston pin 51 in turn. The setting of the threaded groove 54 here will perform threaded rotation locking. When the two mounting rings 53 are installed, the mounting rings 53 and the through groove 3 are in contact and engaged to complete the contact support of the piston pin 51.

[0026] The support and protection mechanism 6 includes a mounting groove 61, and the support member 42 is divided into an upper part and a lower part. The top outer wall of the support member 42 in the upper part is provided with a mounting groove 61, and a resistance block 62 is arranged above the support member 42. The top outer wall of the resistance block 62 is arranged as an arc-shaped mechanism, and the bottom outer wall of the resistance block 62 is arranged with a threaded column 63, and a threaded installation is arranged between the threaded column 63 and the mounting groove 61; when the resistance block 62 needs to be replaced due to excessive wear and tear over time, at this time, it is only necessary to rotate the resistance block 62 until the threaded column 63 is completely separated from the mounting groove 61 to complete the disassembly, and when installing a new resistance block 62, it is only necessary to adjust the threaded column 63 to a suitable position and then screw it into the inside of the mounting groove 61.

[0027] When the utility model is in use, when the piston body 2 is in normal operation and sliding contact, the contact block 62 is automatically driven by the contact force to slide the support member 42 inside the support column 41, and then the contact spring 43 is squeezed by the support member 42 and gradually shrinks, thereby achieving the effect of buffering and shock absorption, thereby protecting the piston body 2; when the contact block 62 is excessively worn out over time and needs to be replaced, it is only necessary to rotate the contact block 62 until the threaded column 63 is completely separated from the installation groove 61 to complete the disassembly, and when installing a new contact block 62, it is only necessary to adjust the threaded column 63 to a suitable position and then screw it into the inside of the installation groove 61; when the connecting rod body 1 needs to be disassembled from the inside of the piston body 2, it is only necessary to It is necessary to unscrew the mounting ring 53 from the outside of the threaded ring 52. At this time, the piston pin 51 changes from a locked state to an active state, and then the piston pin 51 is pulled out from the inside of the bushing at the top of the connecting rod body 1. The setting of the through groove 3 here provides space for the installation and removal of the piston pin 51. During installation, it is necessary to first adjust the connecting rod body 1 to a suitable position and insert it into the inside of the piston body 2. Then, the piston pin 51 is passed through the inside of the bushing at the top of the connecting rod body 1, and then the mounting rings 53 are screwed to the outside of the threaded rings 52 at both ends of the piston pin 51 in turn. The setting of the threaded groove 54 here will perform threaded rotation locking. When the two mounting rings 53 are installed, the mounting rings 53 and the through groove 3 are in contact and engaged to complete the contact support of the piston pin 51.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-strength cast aluminum piston, characterized in that: The invention comprises a connecting rod body (1), a piston body (2) and a through groove (3): the connecting rod body (1) is installed inside the piston body (2); a resistance damping mechanism (4) is arranged above the piston body (2); a portable replacement mechanism (5) is arranged inside the piston body (2); a supporting protection mechanism (6) is arranged above the resistance damping mechanism (4); the resistance damping mechanism (4) comprises a supporting column (41), a supporting member (42) and a resistance spring (43); the piston body (2) is provided with a plurality of supporting members (41) and a plurality of supporting members (42) and a plurality of supporting members (43); A support column (41) is arranged on the outer wall of the top end, the support column (41) is arranged as a cavity structure, and a support member (42) is slidably mounted inside the support column (41), the support member (42) is arranged in an "I" shape, the lower half of the support member (42) is slidably mounted inside the support column (41), the upper half of the support member (42) is arranged outside the support column (41), and a resistance spring (43) is connected between the bottom outer wall of the support member (42) and the bottom inner wall of the support column (41).

2. A high-strength cast aluminum piston according to claim 1, characterized in that: The portable disassembly and replacement mechanism (5) comprises a piston pin (51) and a threaded ring (52); the piston pin (51) is arranged inside a bushing at the top end of the connecting rod body (1); and the threaded rings (52) are symmetrically arranged on the outer walls of both sides of the piston pin (51).

3. A high-strength cast aluminum piston according to claim 2, characterized in that: A mounting ring (53) is provided on the side of the threaded ring (52), and a threaded groove (54) is provided on the inner wall of the side of the mounting ring (53).

4. A high-strength cast aluminum piston according to claim 3, characterized in that: The inner wall of the bottom end of the mounting ring (53) is provided with an abutment ring (55), and threaded mounting is performed between the threaded ring (52) and the threaded groove (54).

5. A high-strength cast aluminum piston according to claim 4, characterized in that: The abutting clamp ring (55) and the threaded ring (52) are snap-fitted together, and the mounting ring (53) and the through groove (3) are snap-fitted together.

6. The high-strength cast aluminum piston according to claim 1, characterized in that: The support and protection mechanism (6) comprises a mounting groove (61), and the support member (42) is divided into an upper half and a lower half, and a mounting groove (61) is provided on the top outer wall of the support member (42) located in the upper half.

7. A high-strength cast aluminum piston according to claim 6, characterized in that: A resistance block (62) is arranged above the support member (42), and the outer wall at the top end of the resistance block (62) is arranged as an arc-shaped structure.

8. The high-strength cast aluminum piston according to claim 7, characterized in that: A threaded column (63) is provided on the outer wall of the bottom end of the abutment block (62), and a threaded connection is formed between the threaded column (63) and the mounting groove (61).

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