CN213106615U

CN213106615U - Piston assembly assistive device

Info

Publication number: CN213106615U
Application number: CN202021951141.9U
Authority: CN
Inventors: 兰剑; 褚立勇; 韩现鹏
Original assignee: Hunan Deutz Power Co Ltd
Current assignee: Hunan Deutz Power Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-05-04
Anticipated expiration: 2030-09-09

Abstract

The utility model provides a piston assembly assists utensil, include: the hoop structure is used for hooping a piston of an engine and is provided with openings extending to two ends of the hoop structure along the axial direction; the hook structure is arranged on the outer side surface of the hoop structure and is positioned on one side of the opening along the circumferential direction; the latch hook mechanism is arranged on the outer side surface of the hoop structure and is positioned on the other side of the opening along the circumferential direction, and the latch hook mechanism can be hooked with the hook structure; wherein, latch hook mechanism and couple structure are in under the state of articulating, and partial latch hook mechanism can move for the couple structure to the diameter size of adjustment cuff structure. The technical scheme of the utility model, can be in the diameter size of direct adjustment cuff structure when articulating the state at latch hook mechanism and couple structure, need not to articulate the operation again, simplified operation process, be favorable to improving assembly efficiency. Meanwhile, the diameter of the hoop structure can be continuously adjusted, and the diameter range of the applicable piston is wider.

Description

Piston assembly assistive device

Technical Field

The application relates to the technical field of engine assembling equipment, in particular to a piston assembling auxiliary tool.

Background

The piston is an important part in the engine and is arranged in a cylinder hole of the engine. Wherein, be provided with on the piston and be used for sealed piston ring, the piston ring is mostly elastic material and makes, and before the piston assembly, the diameter of piston ring is greater than the diameter in jar hole, causes certain difficulty for the assembly of piston, under the normal conditions, need utilize with the supplementary assembly operation that carries out the piston of the supporting instrument of piston size, nevertheless to the piston in different diameters, need make different appurtenance, it is inconvenient to use, and has increased the processing cost.

The prior art provides an engine piston assembly auxiliary tool, which is characterized in that a thin plate is wound around a non-closed ring to form a hoop, a rocking handle is arranged at the head end of the hoop, a rotatable connecting rod is arranged at the tail end of the hoop, and the connecting rod can be hinged with the rocking handle through different pin holes in the rocking handle to adjust the diameter of the hoop and be suitable for pistons with different sizes. However, in this solution, each adjustment operation requires disconnection of the connecting rod and the rocking handle, the operation is complicated, the adjustment operation cannot be performed in the locked state, and the connecting rod and the rocking handle can be hinged only through a limited number of pin holes, and the diameter of the ferrule cannot be continuously adjusted.

SUMMERY OF THE UTILITY MODEL

According to an embodiment of the present invention, it is intended to improve at least one of technical problems existing in the prior art or the related art.

To this end, it is an object according to an embodiment of the present invention to provide a piston assembly aid.

In order to achieve the above object, according to an embodiment of the present invention, there is provided a piston assembly auxiliary tool, including: the hoop structure is used for hooping a piston of an engine and is provided with openings extending to two ends of the hoop structure along the axial direction; the hook structure is arranged on the outer side surface of the hoop structure and is positioned on one side of the opening along the circumferential direction; the latch hook mechanism is arranged on the outer side surface of the hoop structure and is positioned on the other side of the opening along the circumferential direction, and the latch hook mechanism can be hooked with the hook structure; wherein, latch hook mechanism and couple structure are in under the state of articulating, and partial latch hook mechanism can move for the couple structure to the diameter size of adjustment cuff structure.

According to an embodiment of the first aspect of the present invention, the piston assembly aid comprises a hoop structure, a hook structure and a latch hook mechanism. The hoop structure is a cylindrical structure and is used for hooping a piston of an engine; the hoop structure is provided with an opening along the axial direction, and the opening extends to two ends of the hoop structure, so that the hoop structure forms an unclosed structure in the circumferential direction. In the circumferential direction, the parts of the outer side surface of the hoop structure, which are positioned at two sides of the opening, are respectively provided with a hook structure and a latch hook mechanism, and the latch hook mechanism can be hooked with the hook structure, so that when the piston of the engine is assembled, the hoop structure forms a hoop for the piston, and the piston is conveniently arranged in a cylinder hole of the engine. When the latch hook mechanism and the hook structure are in a hanging state, the relative movement of part of the latch hook mechanism relative to the hook structure drives the parts of the hoop structure, which are positioned at two sides of the opening, to move relatively, so that the diameter of the hoop structure is adjusted, and the piston ring is suitable for pistons with different sizes.

It should be noted that the cross-sectional shape of the ferrule structure may be a cylinder shape adapted to the outer surface of the piston, and the ferrule structure may be closely attached to the outer surface of the piston during use, resulting in higher stability. Of course, the cross-sectional shape of the ferrule structure may be other shapes that can grip the piston.

The piston assembly assistive device of the scheme can directly adjust the diameter of the hoop structure when the latch hook mechanism and the hook structure are in the hanging state, does not need to be hung again, simplifies the operation process, can continuously adjust the diameter of the hoop structure, and is wider in diameter range of applicable pistons.

In addition, according to the utility model discloses a piston assembly assistive device in above-mentioned technical scheme of the embodiment can also have following additional technical characteristics:

in the above technical solution, the latch hook mechanism includes: the mounting seat is connected to the hoop structure and is positioned on one side of the opening, which is far away from the hook structure; the rocking handle is rotatably connected with the mounting base and can approach or leave the hook structure through rotation; the hanging piece is movably connected with the rocking handle, moves relative to the hook structure along with the rocking handle to form hanging connection with the hook structure, and can be locked with the hook structure under the action of the rocking handle; the hanging piece can perform telescopic motion relative to the rocking handle so as to adjust the diameter of the hoop structure through telescopic motion when the hanging piece is hung with the hook structure.

In the technical scheme, the latch hook mechanism comprises an installation seat, a rocking handle and a hanging piece. The mounting seat is connected to the hoop structure and is positioned on one side of the opening, which is far away from the hook structure, and used for supporting the rocking handle and the hanging piece. The rocking handle is connected with the mount pad rotation, and the rocking handle is close to or is kept away from the couple structure to the couple structure through the rotation for the mount pad. The hanging piece is movably connected with the rocking handle and can move together with the rocking handle to be close to or far away from the hook structure. When the hanging piece is close to the hook structure, the hanging piece can be hung with the hook structure, and the hanging piece and the hook structure are locked through the reverse rotation of the rocking handle so as to prevent the hanging piece from loosening in the assembling process; when the rocking handle is close to the hook structure, the hanging connection between the hanging connecting piece and the hook structure can be released. When the hanging and connecting piece and the hook structure are in a hanging and connecting state, the hanging and connecting piece is operated to perform telescopic motion relative to the rocking handle, so that the parts, located on the two sides of the opening, of the hoop structure generate relative motion, and the diameter of the hoop structure is adjusted. The hanging piece in the scheme can be in hanging connection with the hook structure to be telescopic and adjusted, hanging connection does not need to be released, and operation is convenient and fast. In addition, the diameter of the hoop structure is continuously changed through the telescopic motion of the hanging piece, and the piston can be applied to pistons with different sizes.

In the technical scheme, the rocking handle is provided with a pin hole and a pin shaft, and the pin shaft penetrates through the pin hole and is rotationally connected with the rocking handle; the hanging part comprises a hanging part and at least one connecting rod, the connecting rod is movably connected with the pin shaft and can perform telescopic motion relative to the pin shaft, the hanging part is arranged at one end, close to the hook structure, of the connecting rod, and the hanging part is used for being hung with the hook structure.

In the technical scheme, the rocking handle is provided with a pin hole and a pin shaft, and the pin shaft penetrates through the pin hole and is rotatably connected with the rocking handle. The pin hole and the pin shaft can be arranged along the axial direction of the hoop structure, and certainly, a certain inclination angle can be formed between the pin hole and the axial direction of the hoop structure. The hanging piece comprises a hanging part and at least one connecting rod. The hanging part is connected with one end of the connecting rod and is used for hanging with the hook structure; the part of the connecting rod, which is far away from the hanging part, extends towards the direction close to the pin shaft and is movably connected with the pin shaft, the connecting rod can rotate along with the pin shaft and also can do telescopic motion relative to the pin shaft, so that the hoop structure is adjusted when the hanging part and the hook structure are in a hanging state.

In the technical scheme, the pin shaft is provided with a through hole, and the through hole is arranged along the radial direction of the pin shaft; the connecting rod is provided with an external thread, passes through the through hole and is connected with the adjusting nut so as to drive the connecting rod to move relative to the pin shaft by screwing or unscrewing the adjusting nut.

In the technical scheme, the pin shaft is provided with a through hole extending along the radial direction, and the connecting rod is provided with an external thread. The connecting rod penetrates through the through hole and is in threaded connection with the adjusting nut, so that the connecting rod is movably connected with the pin shaft; the connecting rod can perform telescopic motion relative to the pin shaft by screwing or unscrewing the adjusting nut relative to the connecting rod, so that the diameter of the hoop structure can be adjusted. Wherein, adjusting nut can be one or more, and adjusting nut can only connect the position that lies in the one end that the through-hole kept away from the portion of hanging on the connecting rod, also can connect the position that lies in the both ends of through-hole on the connecting rod respectively.

In the technical scheme, the pin shaft is provided with a through hole and a threaded hole, the through hole is arranged along the radial direction of the pin shaft, the threaded hole is arranged along the axial direction of the pin shaft and is communicated with the through hole, and the end part of the pin shaft is provided with a fastening screw in threaded connection with the threaded hole; the connecting rod passes through the through-hole to can move for the round pin axle, realize locking the connecting rod through fastening screw's the screwing.

In this technical scheme, sell epaxial through-hole and the screw hole of being equipped with, through setting up the radial setting of through-hole along round pin axle, the screw hole sets up and communicates with the through-hole along the axial direction of round pin axle to when the connecting rod passes the through-hole, utilize the fastening screw who locates in the screw hole to lock the connecting rod, and when fastening screw unscrewed, the connecting rod can carry out concertina movement for the round pin axle, treat that the connecting rod moves to the target location, through fastening screw's screwing, realize the locking to the connecting rod, easy operation is convenient.

In the technical scheme, the number of the connecting rods is two, and the two connecting rods are respectively connected with two ends of the hanging part; the pin shafts extend out from two ends of the pin holes, and the parts of the pin shafts extending out of the pin holes are respectively provided with a through hole; wherein, every connecting rod cooperatees with a through-hole to realize the swing joint between connecting rod and the round pin axle.

In the technical scheme, two ends of the pin shaft respectively extend out of two ends of the pin hole, and the parts of the pin shaft extending out of the pin hole are respectively provided with a through hole. Connect respectively in the both ends of hitching part through setting up two connecting rods, and every connecting rod passes a through-hole to make two connecting rods form swing joint with the round pin axle simultaneously, be favorable to strengthening joint strength, improve the stability that articulates between hitching part and the couple structure.

In the above technical scheme, the hanging part is an arc-shaped rod, and the hanging part protrudes towards the direction away from the connecting rod.

In this technical scheme, be the arc pole through setting up hitching part, and hitching part is to keeping away from the direction protrusion of connecting rod for hitching part is closer to the couple structure, is convenient for form with the couple structure and articulates. Meanwhile, the arc-shaped structure is uniform in conduction and stress, and stress concentration areas are reduced. Of course, the shape of the hanging part is not limited to an arc shape, and may be a straight rod structure or other structural forms capable of hanging with the hook structure.

In the technical scheme, the two installation bottom plates are respectively connected to the hoop structures on the two sides of the opening, and the side surface of each installation bottom plate, which is back to the hoop structures, is a plane; wherein, couple structure fixed connection is on an installation bottom plate, and latch hook mechanism fixed connection is on another installation bottom plate.

In the technical scheme, the positions of the two sides of the opening on the hoop structure are respectively connected with one installation bottom plate, and the side surface of one side of each installation bottom plate, which is back to the hoop structure, is a plane, so that the hook structure and the latch hook mechanism can be conveniently and fixedly connected in the machining process. It can be understood that the lateral surface of cuff structure is the arcwall face, if with couple structure and latch hook mechanism lug connection to the lateral surface of cuff structure on, the processing degree of difficulty is great, can reduce the processing degree of difficulty by a wide margin through setting up mounting plate.

In the above technical solution, the piston assembly assistive device further includes: and the operating handle is connected to one side of the hoop structure, on which the hook structure is arranged.

In the technical scheme, the operating handle is connected to one side of the hoop structure, which is provided with the hook structure, so that when the piston is assembled, an operator can hold the operating handle with one hand and operate the hook locking mechanism with the other hand, the operation is convenient and labor-saving, and the overall stability of the piston assembling auxiliary tool can be improved. It can be understood that the outer surface of the hoop structure is a circular arc surface, which is inconvenient to apply force when the latch hook mechanism is operated, and easily causes the displacement of the piston assembly auxiliary tool and the piston in the hoop structure, thereby affecting the normal assembly of the piston.

In the above solution, the dimension of the ferrule structure in the axial direction is larger than the dimension threshold.

In the technical scheme, the size of the hoop structure in the axial direction is larger than the size threshold value, so that the hoop structure can surround the outer surface of the piston when the piston is assembled, the piston ring on the piston is prevented from being exposed, and the piston ring can smoothly enter a cylinder hole of an engine. Wherein, the size threshold value can be determined according to the size of the piston suitable for the piston assembling assistive device.

Additional aspects and advantages of the embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of embodiments of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 2 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

fig. 3 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 4 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

fig. 5 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 6 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

fig. 7 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 8 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 9 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 10 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 11 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 12 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

figure 13 shows a schematic view of a piston assembly aid according to an embodiment of the invention;

fig. 14 shows a schematic view of a piston assembly aid according to an embodiment of the invention.

The correspondence between reference numerals and components in fig. 1 to 14 is as follows:

1 piston assembly assistive device, 11 hoop structures, 111 openings, 12 hook structures, 13 latch hook mechanisms, 131 installation seats, 132 rocking handles, 1321 pin holes, 133 hanging pieces, 1331 hanging parts, 1332 connecting rods, 1333 adjusting nuts, 134 pin shafts, 1341 through holes, 1342 threaded holes, 1343 fastening screws, 14 installation bottom plates and 15 operation handles.

Detailed Description

In order to make the above objects, features and advantages according to the embodiments of the present invention more clearly understood, embodiments according to the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the invention, however, embodiments according to the invention may be practiced in other ways than those described herein, and therefore the scope of protection of this application is not limited by the specific embodiments disclosed below.

A piston assembly aid according to some embodiments of the present invention is described below with reference to fig. 1 to 14.

Example one

The present embodiment provides a piston assembly aid 1, as shown in fig. 1, comprising a ferrule structure 11, a hook structure 12 and a hook mechanism 13.

The hoop structure 11 is a cylindrical structure, an opening 111 is arranged on the hoop structure 11 along the axial direction, and the opening 111 extends to two ends of the hoop structure 11, so that the hoop structure 11 forms an unclosed structure in the circumferential direction for a piston of a hoop engine. The hook structure 12 and the latch hook mechanism 13 are disposed on the outer side surface of the hoop structure 11 and located on two sides of the opening 111 in the circumferential direction of the hoop structure 11; the latch hook mechanism 13 can be hooked to the hook structure 12 such that the ferrule structure 11 grips the piston when the piston is disposed within the ferrule structure 11 by hooking between the latch hook mechanism 13 and the hook structure 12.

When the piston assembling operation is performed, the piston assembling auxiliary tool 1 for clamping the piston is moved to the position of the cylinder hole of the engine, the hoop is aligned with the cylinder hole, and the piston can be pushed into the cylinder hole by applying force to the piston from the top end of the hoop. When the latch hook mechanism 13 and the hook structure 12 are in a hooked state, part of the latch hook mechanism 13 can move relative to the hook structure 12, and drive the parts of the hoop structure 11 located at two sides of the opening 111 to move relatively, so as to adjust the diameter of the hoop structure 11, and thus, the piston ring is suitable for pistons with different sizes.

It should be noted that the cross-sectional shape of the ferrule structure 11 may be a cylinder shape matching the outer surface of the piston, and the ferrule structure can be tightly attached to the outer surface of the piston in use, so that the stability is higher.

The piston assembly assistive device 1 in this embodiment can directly adjust the diameter of the ferrule structure 11 when the latch hook mechanism 13 and the latch hook structure 12 are in the hanging state, and does not need to be hung again, thereby simplifying the operation process and being beneficial to improving the assembly efficiency. At the same time, the diameter of the ferrule structure 11 can be continuously adjusted, and the range of applicable piston diameters is wider.

Example two

The present embodiment provides a piston assembly aid 1, which is further improved on the basis of the first embodiment.

As shown in FIG. 2, the ferrule structure 11 is a cylindrical structure with unclosed sides. The latch hook mechanism 13 includes a mount 131, a rocker 132, and a hanging member 133. The mounting seat 131 is connected to the outside of the ferrule structure 11 and is located on the side of the opening 111 away from the hook structure 12 in the circumferential direction of the ferrule structure 11 to provide support for the rocker 132 and the hook 133. The handle 132 is rotatably connected to the mounting base 131, and the handle 132 can be rotated relative to the mounting base 131 to move toward or away from the hook structure 12. The hanging member 133 is movably connected to the rocking handle 132, and the hanging member 133 is movable together with the rocking handle 132 to be close to or away from the hook structure 12, and the hanging member 133 is also movable relative to the rocking handle 132.

When the hanging piece 133 is close to the hook structure 12 along with the rotation of the rocking handle 132, the hanging piece 133 can move to the matching position with the hook structure 12 to form hanging connection with the hook structure 12, and at the moment, the hanging piece 133 is locked with the hook structure 12 through the reverse rotation of the rocking handle 132 so as to prevent the hanging piece 133 from loosening in the piston assembling process. When the rocking handle 132 is moved from the locked position to the hook structure 12, the locked state between the hook member 133 and the hook structure 12 is released, and the hook member 133 can be moved out from the engagement position of the hook structure 12 to release the hook engagement with the hook structure 12. When the hanging member 133 and the hook structure 12 are in a hanging state, the hanging member 133 is operated to perform a telescopic motion relative to the rocking handle 132, so that the portions of the hoop structure 11 located at two sides of the opening 111 generate a relative motion, thereby adjusting the diameter of the hoop structure 11.

The hanging member 133 in this embodiment can be adjusted to extend and retract in a hanging state with the hook structure 12, and does not need to be released from hanging, so that the operation is convenient. Furthermore, the diameter of the cuff structure 11 is continuously varied by the telescopic movement of the hanger 133, which is applicable to different sized pistons.

EXAMPLE III

The embodiment provides a piston assembly auxiliary tool 1, and is further improved on the basis of the second embodiment.

As shown in fig. 2 to 4, the latch hook mechanism 13 further includes a pin 134, and the rocking handle 132 is provided with a pin hole 1321 corresponding to the pin 134. The pin shaft 134 passes through the pin hole 1321 and is rotatably connected to the rocker 132, and both the pin hole 1321 and the pin shaft 134 are arranged in the axial direction of the ferrule structure 11. The pin 134 is provided with a through hole 1341 extending in the radial direction. The hanging member 133 includes a hanging portion 1331 and a connecting rod 1332. The hanging part 1331 is connected to one end of the connecting rod 1332, and corresponds to the hook structure 12 for hanging with the hook structure 12. An external thread is arranged on the connecting rod 1332, and the part of the connecting rod 1332 far away from the hanging part 1331 extends towards the direction close to the pin shaft 134 and passes through the through hole 1341 on the pin shaft 134; the positions of the connecting rod 1332 at the two ends of the through hole 1341 are respectively connected with an adjusting nut 1333, and the connecting rod 1332 is movably connected with the pin shaft 134 through the threaded connection between the adjusting nut 1333 and the connecting rod 1332. The connecting rod 1332 can rotate with the pin shaft 134, or the connecting rod 1332 can perform telescopic movement relative to the pin shaft 134 by screwing or unscrewing the adjusting nut 1333 relative to the connecting rod 1332, so as to adjust the ferrule structure 11 when the hanging part 1331 and the hook structure 12 are in a hanging state, thereby changing the diameter of the ferrule structure 11.

The installation direction of the pin shaft 134 and the pin hole 1321 is not limited to the axial direction along the ferrule in the present embodiment, and may be a certain inclination angle with respect to the axial direction of the ferrule structure 11. The number of the adjusting nuts 1333 may be one or more, and the adjusting nuts 1333 may be connected to the connecting rod 1332 only at positions at one end of the through hole 1341 away from the hanging part 1331, or may be connected to the connecting rod 1332 at positions at both ends of the through hole 1341.

Example four

The present embodiment provides a piston assembly aid 1, which is further improved on the basis of the third embodiment.

As shown in fig. 5, two ends of the pin 134 respectively extend out from two ends of the pin hole 1321, and the portions of the pin 134 extending out from the pin hole 1321 are respectively provided with a through hole 1341. Accordingly, the number of the connection rods 1332 is two, the two connection rods 1332 are respectively connected with both ends of the hanging part 1331 so that the hanging piece 133 forms a U-shaped structure, and a portion of each connection rod 1332 away from the hanging part 1331 is provided with an external thread. Each connecting rod 1332 passes through one of the through holes 1341 and is connected to the pin shaft 134 by an adjusting nut 1333, which is beneficial to enhancing the connection strength and improving the stability of the hanging connection between the hanging piece 133 and the hook structure 12. Wherein, the hanging portion 1331 is specifically an arc-shaped rod, and the hanging portion 1331 protrudes in a direction away from the connecting rod 1332, so that the hanging portion 1331 is closer to the hook structure 12, thereby facilitating the formation of hanging connection with the hook structure 12. Meanwhile, the arc-shaped structure is uniform in conduction and stress, and stress concentration areas are reduced.

In another implementation manner of the present embodiment, as shown in fig. 6, the hanging portion 1331 is shaped like a straight rod. Of course, the hanging portion 1331 may be in other forms capable of hanging with the hook structure 12.

EXAMPLE five

As shown in fig. 2, 7 and 8, the latch hook mechanism 13 further includes a pin 134, and the rocking handle 132 is provided with a pin hole 1321 corresponding to the pin 134. The pin shaft 134 passes through the pin hole 1321 and is rotatably connected to the rocker 132, and both the pin hole 1321 and the pin shaft 134 are arranged in the axial direction of the ferrule structure 11. The pin shaft 134 is provided with a through hole 1341 extending along the radial direction and a threaded hole 1342 extending along the axial direction, and the threaded hole 1342 is communicated with the through hole 1341. The hanging member 133 includes a hanging portion 1331 and a connecting rod 1332. The hanging part 1331 is connected to one end of the connecting rod 1332, and corresponds to the hook structure 12 for hanging with the hook structure 12. The part of the connecting rod 1332 away from the hanging part 1331 extends towards the direction close to the pin shaft 134 and passes through the through hole 1341 on the pin shaft 134; a fastening screw 1343 is disposed in the threaded hole 1342, and the connecting rod 1332 is locked by screwing the fastening screw 1343, so as to realize connection between the connecting rod 1332 and the pin shaft 134. The connecting rod 1332 can rotate with the pin shaft 134, and can also perform a telescopic motion relative to the pin shaft 134 when the fastening screw 1343 is unscrewed, so as to adjust the ferrule structure 11 when the hanging part 1331 and the hook structure 12 are in a hanging state, so as to change the diameter of the ferrule structure 11. After the rod 1332 is adjusted to the target position, the set screw 1343 is tightened again to stabilize the rod 1332 and allow the ferrule arrangement 11 to grip the piston for assembly operations.

The installation direction of the pin shaft 134 and the pin hole 1321 is not limited to the axial direction along the ferrule in the present embodiment, and may be a certain inclination angle with respect to the axial direction of the ferrule structure 11.

EXAMPLE six

The present embodiment provides a piston assembly aid 1, which is further improved on the basis of the fifth embodiment.

As shown in fig. 9, two ends of the pin 134 respectively extend out from two ends of the pin hole 1321, a through hole 1341 extending in the radial direction is respectively formed in the portion of the pin 134 extending out from the pin hole 1321, a threaded hole 1342 extending in the axial direction is respectively formed in each of the two ends of the pin 134, and a fastening screw 1343 is disposed in each of the threaded holes 1342. Accordingly, the number of the connection rods 1332 is two, and the two connection rods 1332 are respectively connected with both ends of the hanging part 1331. Each connecting rod 1332 passes through one of the through holes 1341 and is connected to the pin 134 by adjusting the fastening screw 1343; the connecting rod 1332 remains stable as the set screw 1343 is tightened, and the connecting rod 1332 is operable to move telescopically relative to the pin 134 to adjust the diameter of the ferrule structure 11 as the set screw 1343 is loosened. Wherein, the hanging portion 1331 is specifically an arc-shaped rod, and the hanging portion 1331 protrudes in a direction away from the connecting rod 1332, so that the hanging portion 1331 is closer to the hook structure 12, thereby facilitating the formation of hanging connection with the hook structure 12. Meanwhile, the arc-shaped structure is uniform in conduction and stress, and stress concentration areas are reduced.

In another implementation manner of the present embodiment, as shown in fig. 10, the hanging portion 1331 is shaped as a straight rod structure. Of course, the hanging portion 1331 may be in other forms capable of hanging with the hook structure 12.

EXAMPLE seven

As shown in fig. 11, the piston assembly aid 1 further includes two mounting bases 14 disposed outside the ferrule structure 11 and respectively located on the ferrule structure 11 at positions on both sides of the opening 111. The installation bottom plate 14 is fixedly connected with the hoop structure 11, and the side surface of one side of each installation bottom plate 14, which is back to the hoop structure 11, is a plane, so that the hook structure 12 and the hook mechanism 13 can be fixedly connected conveniently in the machining process, and the machining difficulty can be reduced.

Further, as shown in fig. 12, the piston assembling aid 1 further includes an operating handle 15. The operating handle 15 is arranged on one side of the hoop structure 11 on which the hook structure 12 is arranged, so that when the piston assembling operation is carried out, an operator can hold the operating handle 15 with one hand and operate the latch hook mechanism 13 with the other hand, the piston assembling assistive device is convenient and labor-saving, and meanwhile, the overall stability of the piston assembling assistive device 1 can be improved. The operating handle 15 is not limited to the rod-shaped structure in the present embodiment, and may be in other structures that can be used for holding.

Further, the dimension of the ferrule structure 11 in the axial direction is larger than a dimension threshold value, so that the ferrule structure 11 can surround the outer surface of the piston when the piston assembling operation is performed, and the piston ring on the piston is prevented from being exposed, thereby ensuring that the piston and the piston ring can smoothly enter the cylinder bore of the engine. The size threshold value may be determined according to the size of the piston for which the piston assembly aid 1 is suitable.

Example eight

The present embodiment provides a piston assembly aid 1, as shown in fig. 13 and 14, including a ferrule structure 11, a hook structure 12 and a latch hook mechanism 13, a mounting base plate 14, and an operating handle 15.

The ferrule structure 11 is a cylindrical structure, and the ferrule structure 11 is provided with an opening 111 along the axial direction, and the opening 111 extends to two ends of the ferrule structure 11, so that the ferrule structure 11 forms an unclosed structure in the circumferential direction for a piston of a ferrule engine. The two mounting bottom plates 14 are disposed outside the ferrule structure 11, and the two mounting bottom plates 14 are respectively disposed on the ferrule structure 11 at two sides of the opening 111. The mounting base plates 14 are fixedly connected to the ferrule structure 11, and a side surface of each mounting base plate 14 facing away from the ferrule structure 11 is a plane, so as to facilitate the fixed connection of the hook structure 12 and the hook mechanism 13 during the manufacturing process.

The hook structure 12 and the latch hook mechanism 13 are arranged on the plane of the mounting base plate 14 and are respectively positioned on two sides of the opening 111 in the circumferential direction of the hoop structure 11; the latch hook mechanism 13 can be hooked to the hook structure 12 such that the ferrule structure 11 grips the piston when the piston is disposed within the ferrule structure 11 by hooking between the latch hook mechanism 13 and the hook structure 12.

The latch hook mechanism 13 includes a mounting seat 131, a rocking handle 132, a hanging member 133, and a pin 134. The mounting seat 131 is connected to the outside of the ferrule structure 11 and is located on the side of the opening 111 away from the hook structure 12 in the circumferential direction of the ferrule structure 11 to provide support for the rocker 132 and the hook 133. The handle 132 is rotatably connected to the mounting base 131, and the handle 132 can be rotated relative to the mounting base 131 to move toward or away from the hook structure 12. The rocking handle 132 is provided with a pin hole 1321 extending in the axial direction of the ferrule structure 11, and the pin shaft 134 passes through the pin hole 1321 and is rotatably connected to the rocking handle 132. The two ends of the pin 134 extend outward from the two ends of the through hole 1341, and the outward extending portions of the pin 134 are respectively provided with a through hole 1341 extending along the radial direction. The hanging member 133 includes a hanging portion 1331 and two connecting rods 1332. The hanging part 1331 is an arc-shaped rod, the hanging part 1331 protrudes in a direction away from the connecting rods 1332, and two ends of the hanging part 1331 are respectively connected with the two connecting rods 1332; the hanging portion 1331 corresponds to the hook structure 12 and is used for hanging the hook structure 12. Each connecting rod 1332 is provided with an external thread, and the part of the connecting rod 1332 far away from the hanging part 1331 extends towards the direction close to the pin shaft 134; each connecting rod 1332 penetrates through the through hole 1341 of the corresponding pin shaft 134, the positions of the connecting rods 1332 at the two ends of the through hole 1341 are respectively connected with an adjusting nut 1333, and the connecting rods 1332 are in threaded connection with the connecting rods 1333, so that the movable connection between the connecting rods 1332 and the pin shafts 134 is realized, the connection strength is favorably enhanced, and the hanging stability between the hanging piece 133 and the hook structure 12 is improved. The connecting rod 1332 can rotate together with the pin shaft 134, or the connecting rod 1332 can perform telescopic movement relative to the pin shaft 134 by screwing or unscrewing the adjusting nut 1333 relative to the connecting rod 1332, so as to adjust the ferrule structure 11 when the hanging part 1331 and the hook structure 12 are in a hanging state, thereby changing the diameter of the ferrule structure 11.

The operating handle 15 is disposed on the side of the hoop structure 11 where the hook structure 12 is disposed, specifically, the operating handle 15 is a rod-shaped structure, one end of which is connected to the mounting base plate 14, and the other end of which extends in a direction away from the mounting base plate 14. When the piston assembling operation is performed, an operator can hold the operating handle 15 with one hand and operate the latch hook mechanism 13 with the other hand, the operation is convenient and labor-saving, and meanwhile, the overall stability of the piston assembling assistive device 1 can be improved. The operating handle 15 is not limited to the rod-shaped structure in the present embodiment, and may be in other structures that can be used for holding.

Above combine the technical scheme according to the utility model discloses a detailed description in the accompanying drawings, the piston assembly assists the utensil and can be in the diameter size of direct adjustment cuff structure when articulating the state at latch hook mechanism and couple structure, need not to articulate the operation again, has simplified operation process, is favorable to improving assembly efficiency. Meanwhile, the diameter of the hoop structure can be continuously adjusted, and the diameter range of the applicable piston is wider.

In embodiments in accordance with the present invention, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the embodiments according to the present invention can be understood by those of ordinary skill in the art as the case may be.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit referred to must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the technical aspects of the present application.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example in accordance with the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment according to the present invention, and is not intended to limit the technical solution of the present invention, and it is obvious to those skilled in the art that various modifications and changes can be made in the technical solution of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the technical scheme of the application shall be included in the protection scope of the application.

Claims

1. A piston assembly aid (1), characterized in that it comprises:

the sleeve hoop structure (11) is used for a piston of a sleeve hoop engine, and openings (111) extending to two ends of the sleeve hoop structure (11) along the axial direction are formed in the sleeve hoop structure (11);

the hook structure (12) is arranged on the outer side surface of the hoop structure (11) and is positioned on one side of the opening (111) along the circumferential direction;

the locking hook mechanism (13) is arranged on the outer side surface of the hoop structure (11) and is positioned on the other side of the opening (111) along the circumferential direction, and the locking hook mechanism (13) can be hung with the hook structure (12);

wherein, under the hanging state of the latch hook mechanism (13) and the hook structure (12), part of the latch hook mechanism (13) can move relative to the hook structure (12) so as to adjust the diameter of the hoop structure (11).

2. Piston assembly aid (1) according to claim 1, characterized in that said latch hook mechanism (13) comprises:

the mounting seat (131) is connected to the hoop structure (11) and is positioned on one side of the opening (111) far away from the hook structure (12);

the rocking handle (132) is rotatably connected with the mounting seat (131), and the rocking handle (132) can be close to or far away from the hook structure (12) through rotation;

the hanging piece (133) is movably connected with the rocking handle (132), the hanging piece (133) moves relative to the hook structure (12) along with the rocking handle (132) to form hanging connection with the hook structure (12), and can be locked with the hook structure (12) under the action of the rocking handle (132);

the hanging piece (133) can perform telescopic motion relative to the rocking handle (132) so as to adjust the diameter of the hoop structure (11) through the telescopic motion when the hanging piece is hung on the hook structure (12).

3. Piston fitting aid (1) according to claim 2,

a pin hole (1321) and a pin shaft (134) are formed in the rocking handle (132), and the pin shaft (134) penetrates through the pin hole (1321) and is rotatably connected with the rocking handle (132);

the hanging piece (133) comprises a hanging portion (1331) and at least one connecting rod (1332), the connecting rod (1332) is movably connected with the pin shaft (134) and can move in a telescopic mode relative to the pin shaft (134), the hanging portion (1331) is arranged at one end, close to the hook structure (12), of the connecting rod (1332), and the hanging portion (1331) is used for being hung on the hook structure (12).

4. Piston fitting aid (1) according to claim 3,

a through hole (1341) is formed in the pin shaft (134), and the through hole (1341) is arranged along the radial direction of the pin shaft (134);

an external thread is arranged on the connecting rod (1332), the connecting rod (1332) penetrates through the through hole (1341) and is connected with an adjusting nut (1333) so that the connecting rod (1332) is driven to move relative to the pin shaft (134) through screwing or unscrewing of the adjusting nut (1333).

5. Piston fitting aid (1) according to claim 3,

a through hole (1341) and a threaded hole (1342) are formed in the pin shaft (134), the through hole (1341) is arranged along the radial direction of the pin shaft (134), the threaded hole (1342) is arranged along the axial direction of the pin shaft (134) and is communicated with the through hole (1341), and a fastening screw (1343) in threaded connection with the threaded hole (1342) is arranged at the end part of the pin shaft (134);

the connecting rod (1332) penetrates through the through hole (1341) and can move relative to the pin shaft (134), and the connecting rod (1332) is locked by screwing the fastening screw (1343).

6. Piston fitting aid (1) according to claim 4 or 5,

the number of the connecting rods (1332) is two, and the two connecting rods are respectively connected with two ends of the hanging part (1331);

the pin shaft (134) extends out of two ends of the pin hole (1321), and the parts of the pin shaft (134) extending out of the pin hole (1321) are respectively provided with one through hole (1341);

wherein each connecting rod (1332) is matched with one through hole (1341) to realize the movable connection between the connecting rod (1332) and the pin shaft (134).

7. Piston fitting aid (1) according to claim 6,

the hanging part (1331) is an arc-shaped rod, and the hanging part (1331) protrudes in the direction away from the connecting rod (1332).

8. Piston assembly aid (1) according to any one of claims 1 to 5, further comprising:

the two mounting bottom plates (14) are respectively connected to the hoop structures (11) on two sides of the opening (111), and the side surface of each mounting bottom plate (14) facing away from the hoop structure (11) is a plane;

the hook structure (12) is fixedly connected to one mounting base plate (14), and the latch hook mechanism (13) is fixedly connected to the other mounting base plate (14).

9. Piston assembly aid (1) according to any one of claims 1 to 5, further comprising:

and the operating handle (15) is connected to one side of the hoop structure (11) on which the hook structure (12) is arranged.

10. Piston fitting aid (1) according to any one of claims 1 to 5,

the dimension of the ferrule arrangement (11) in the axial direction is greater than a dimensional threshold.