Auxiliary tool for assembling engine piston

Abstract

The utility model provides an engine piston assembly assistive device, and relates to the technical field of engine piston assembly, the engine piston assembly assistive device comprises a clamp, the clamp is composed of a left clamping ring and a right clamping ring, the other end of the left clamping ring and the other end of the right clamping ring are provided with openings, and the openings are provided with adjusting mechanisms; after the hoop is sleeved at one end, with a piston ring, of an engine piston, the nut at one end of the threaded rod is screwed down, the left clamping ring and the right clamping ring can be driven to be close to each other and used for extruding the piston ring to contract inwards through the left clamping ring and the right clamping ring, meanwhile, the spring is in a contraction state, and after the piston is plugged into a cylinder body of an engine, the piston ring is clamped. The nut at one end of the threaded rod is unscrewed, the left clamping ring and the right clamping ring are driven by elastic force generated by the spring to rotate outwards so that the inner diameter of the hoop can be increased, a new piston can conveniently enter the inner side of the hoop, and the problem that guide sleeves with different diameters need to be prepared for use for pistons with different diameters in the prior art is solved. And the process of assembling the engine piston is very troublesome.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine piston assembly technical field especially relates to a kind of engine piston assembly auxiliary tool. BACKGROUND

[0002] Engine piston is important part in engine, piston and piston ring, cylinder cover etc. are jointly formed combustion chamber, withstands cylinder gas pressure, and is driven by piston pin to let connecting rod crankshaft rotation. Arrangement has piston ring group on piston, in free state, piston ring diameter is greater than piston and cylinder bore diameter, so, in working condition, piston ring can be elastically pressed on cylinder bore, prevent high-pressure gas in combustion chamber from leaking. However, piston ring with larger diameter brings certain difficulty to the assembly of piston;

[0003] In prior art, conventional mode is to use horn-shaped piston guide sleeve, guide sleeve has cylinder section and shrink section, shrink section is conical surface, can gradually compress piston ring, ensure that piston is smoothly assembled into cylinder bore, however, guide sleeve diameter is not adjustable, different diameters of guide sleeve are prepared for use for different diameters of piston, lead to the process of assembling engine piston is very troublesome, therefore, the utility model provides a kind of engine piston assembly auxiliary tool to solve the above problems. SUMMARY

[0004] For the above problems, the utility model provides a kind of engine piston assembly auxiliary tool to solve the problem that, in prior art, different diameters of guide sleeve are prepared for use for different diameters of piston, lead to the process of assembling engine piston is very troublesome.

[0005] To achieve the purpose of the utility model, the utility model realizes the following technical scheme: a kind of engine piston assembly auxiliary tool, including clamp, the clamp is by left clasp ring and right clasp ring composition, and one end of left clasp ring and right clasp ring is hinged, another end of left clasp ring and right clasp ring is equipped with opening, and adjusting mechanism is equipped on opening.

[0006] Further improvement lies in that: the adjusting mechanism includes threaded rod, groove, spring and nut, one end of the left clasp ring is hinged with threaded rod, one end of the right clasp ring is provided with groove, one end of the threaded rod is threadedly connected with nut after penetrating out the inside of the groove, and the outside of the threaded rod is sleeved with spring.

[0007] Further improvement lies in that: the outer diameter of the spring and the nut is greater than the width of the groove, the material of the right clasp ring is set as elastic spring piece, and the inner wall of left clasp ring and right clasp ring is connected with the outer wall of piston ring.

[0008] Further improvement lies in that: one side of the right clasp ring is fixedly connected with support rod, the top of the support rod is hinged with rotating rod through hinged seat, and the lower side of the rotating rod is provided with extrusion mechanism.

[0009] Further improvement lies in that the extruding mechanism comprises a connecting rod, a limiting sleeve, a sliding rod, a pressing disc and a hinged rod, the bottom of the supporting rod is fixedly connected with the connecting rod, one end of the connecting rod is fixedly connected with the limiting sleeve, the inside of the limiting sleeve is inserted with the sliding rod, the bottom end of the sliding rod is fixedly connected with the pressing disc, and the top end of the sliding rod is hinged with the bottom of one end of the rotating rod through the hinged rod.

[0010] Further improvement lies in that the diameter of the pressing disc is smaller than the inner diameter of the hoop, the pressing disc is parallel to the center of the hoop, and the bottom of the pressing disc is fixedly connected with a silica gel pad.

[0011] Further improvement lies in that the hinged end of the rotating rod and the hinged seat is sleeved with a torsion spring, and the two ends of the torsion spring are respectively connected with the rotating rod and the hinged seat.

[0012] The utility model discloses a beneficial effect is: the hoop is sleeved in the one end of engine piston with piston ring, and the nut of one end of threaded rod is tightened, can drive left clamping ring and right clamping ring each other close, to through left clamping ring and right clamping ring extrude piston ring and contract to the inside, and the spring is also in the state of contraction, after piston is inserted into the cylinder body of engine, the nut of one end of threaded rod is loosened, and the elastic force of spring is used to drive left clamping ring and right clamping ring to rotate outward, to increase the inner diameter of hoop, the inside of the hoop is convenient for new piston to enter, to solve the problem of prior art for different diameter piston, need to prepare different diameter guide sleeve to be ready for use, lead to the process of assembling engine piston is very troublesome. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is the extrusion state diagram of the utility model;

[0015] Figure 3 It is the side view of the utility model;

[0016] Figure 4 It is the A place of the utility model Figure 1 Partial enlarged diagram.

[0017] Wherein: 1, hoop;2, left clamping ring;3, right clamping ring;4, supporting rod;5, threaded rod;6, recess;7, spring;8, nut;9, connecting rod;10, limiting sleeve;11, sliding rod;12, pressing disc;13, rotating rod;14, hinged rod;15, hinged seat. DETAILED DESCRIPTION

[0018] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0019] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes an engine piston assembly tool, including a clamp 1. The clamp 1 is composed of a left retaining ring 2 and a right retaining ring 3, with one end of the left retaining ring 2 and the right retaining ring 3 hinged to each other. The other end of the left retaining ring 2 and the right retaining ring 3 is provided with an opening, and an adjustment mechanism is provided on the opening. The clamp 1 is fitted onto the end of the engine piston with the piston ring. The adjustment mechanism can drive the left retaining ring 2 and the right retaining ring 3 to retract inward, thereby reducing the outer diameter of the piston ring, making it easier for people to insert the entire piston into the engine cylinder.

[0020] The adjusting mechanism includes a threaded rod 5, a groove 6, a spring 7, and a nut 8. One end of the left retaining ring 2 is hinged to the threaded rod 5, and one end of the right retaining ring 3 has a groove 6. One end of the threaded rod 5 passes through the interior of the groove 6 and is threadedly connected to the nut 8. A spring 7 is sleeved on the outer side of the threaded rod 5. The outer diameters of both the spring 7 and the nut 8 are larger than the width of the groove 6. The right retaining ring 3 is made of an elastic spring. The inner walls of the left retaining ring 2 and the right retaining ring 3 are fitted against the outer wall of the piston ring. (The last sentence appears to be incomplete and possibly refers to a clamp.) After the piston ring is attached to the end of the engine piston, tighten the nut 8 at one end of the threaded rod 5. This will cause the left retaining ring 2 and the right retaining ring 3 to move closer to each other. The left retaining ring 2 and the right retaining ring 3 will squeeze the piston ring inward and contract. At the same time, the spring 7 will also be in a contracted state. After the piston is inserted into the engine block, loosen the nut 8 at one end of the threaded rod 5. The elastic force generated by the spring 7 will cause the left retaining ring 2 and the right retaining ring 3 to rotate outward. This will increase the inner diameter of the clamp 1 and make it easier for a new piston to enter the inner side of the clamp 1.

[0021] One side of the right clamping ring 3 is fixedly connected with a support rod 4, the top of the support rod 4 is hingedly connected with a rotating rod 13 through a hinge seat 15, the lower part of the rotating rod 13 is provided with an extrusion mechanism, the extrusion mechanism comprises a connecting rod 9, a limiting sleeve 10, a sliding rod 11, a pressure plate 12 and a hinge rod 14, the bottom of the support rod 4 is fixedly connected with the connecting rod 9, one end of the connecting rod 9 is fixedly connected with the limiting sleeve 10, the inside of the limiting sleeve 10 is inserted with the sliding rod 11, the bottom end of the sliding rod 11 is fixedly connected with the pressure plate 12, the top end of the sliding rod 11 is hingedly connected with the bottom of one end of the rotating rod 13 through the hinge rod 14, the rotating rod 13 is connected with the top end of the sliding rod 11 through the hinge rod 14, and the connecting rod 9 and the limiting sleeve 10 can limit the movement track of the sliding rod 11, when the rotating rod 13 is pressed to rotate downward, the rotating rod 13 can drive the sliding rod 11 to move linearly downward along the inner wall of the limiting sleeve 10 through the hinge rod 14, the sliding rod 11 drives the pressure plate 12 to move linearly downward, and the pressure plate 12 extrudes the piston until the piston enters the inside of the engine cylinder body.

[0022] The diameter of the pressure plate 12 is smaller than the inner diameter of the clamp 1, the pressure plate 12 is parallel to the center position of the clamp 1 up and down, and the bottom of the pressure plate 12 is fixedly connected with a silica gel pad, the silica gel pad can separate the pressure plate 12 from the piston to avoid direct contact, and the soft texture of the silica gel pad can play a buffering role to protect the piston during assembly.

[0023] The hinge end of the rotating rod 13 and the hinge seat 15 is sleeved with a torsion spring, the two ends of the torsion spring are respectively connected with the rotating rod 13 and the hinge seat 15, the rotating rod 13 rotates downward to curl the torsion spring, and when the rotating rod 13 is released, the elastic force of the torsion spring drives the rotating rod 13 to move upward to reset, and the rotating rod 13 drives the pressure plate 12 to move linearly upward to reset through the hinge rod 14 and the sliding rod 11.

[0024] The engine piston assembly aid, the clamp 1 is sleeved on one end of the engine piston with the piston ring, the nut 8 at one end of the threaded rod 5 is tightened, the left clamping ring 2 and the right clamping ring 3 are brought close to each other, the piston ring is extruded inwardly by the left clamping ring 2 and the right clamping ring 3, and at the same time the spring 7 is also in a contracted state, after the piston is inserted into the cylinder body of the engine, the nut 8 at one end of the threaded rod 5 is loosened, the left clamping ring 2 and the right clamping ring 3 are driven to rotate outwardly by the elastic force of the spring 7, the inner diameter of the clamp 1 is increased, and the inside of the clamp 1 is convenient for the new piston to enter, so as to solve the problem that in the prior art, different diameter guide sleeves need to be prepared for use for different diameter pistons, resulting in that the assembly process of the engine piston is very troublesome.

[0025] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An engine piston assembly aid comprising a clamp (1), characterized in that: The clamping hoop (1) is composed of a left clamping ring (2) and a right clamping ring (3), and one end of the left clamping ring (2) and the right clamping ring (3) are hingedly connected, the other end of the left clamping ring (2) and the right clamping ring (3) is provided with an opening, and the opening is provided with an adjusting mechanism. The adjusting mechanism comprises a threaded rod (5), a groove (6), a spring (7) and a nut (8), one end of the left clamping ring (2) is hingedly connected with the threaded rod (5), one end of the right clamping ring (3) is provided with the groove (6), one end of the threaded rod (5) penetrates out of the inside of the groove (6) and is threadedly connected with the nut (8), and the outside of the threaded rod (5) is sleeved with the spring (7).

2. An engine piston assembly aid according to claim 1, wherein: The outer diameter of the spring (7) and the nut (8) is greater than the width of the groove (6), the material of the right clamping ring (3) is an elastic spring sheet, and the inner walls of the left clamping ring (2) and the right clamping ring (3) are connected with the outer wall of the piston ring.

3. An engine piston assembly aid as claimed in claim 1, wherein: One side of the right clamping ring (3) is fixedly connected with a supporting rod (4), the top of the supporting rod (4) is hingedly connected with a rotating rod (13) through a hinge seat (15), and the lower portion of the rotating rod (13) is provided with an extrusion mechanism.

4. An engine piston assembly aid according to claim 3, wherein: The extrusion mechanism comprises a connecting rod (9), a limiting sleeve (10), a sliding rod (11), a pressure plate (12) and a hinge rod (14), the bottom of the supporting rod (4) is fixedly connected with the connecting rod (9), one end of the connecting rod (9) is fixedly connected with the limiting sleeve (10), the inside of the limiting sleeve (10) is inserted with the sliding rod (11), the bottom end of the sliding rod (11) is fixedly connected with the pressure plate (12), and the top end of the sliding rod (11) is hingedly connected with the bottom of one end of the rotating rod (13) through the hinge rod (14).

5. An engine piston assembly aid according to claim 4, wherein: The diameter of the pressure plate (12) is less than the inner diameter of the clamping hoop (1), the pressure plate (12) is parallel to the center position of the clamping hoop (1) up and down, and the bottom of the pressure plate (12) is fixedly connected with a silica gel pad.

6. An engine piston assembly aid as claimed in claim 4, wherein: The hinge end of the rotating rod (13) and the hinge seat (15) is sleeved with a torsional spring, and the two ends of the torsional spring are respectively connected with the rotating rod (13) and the hinge seat (15).

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