CN210172938U

CN210172938U - Mounting device for engine piston pin

Info

Publication number: CN210172938U
Application number: CN201920747446.9U
Authority: CN
Inventors: Junjun Guo; 郭君君; Youyou Yao; 姚有有
Original assignee: Xi'an Xiangtai Energy Technology Co Ltd
Current assignee: Xi'an Xiangtai Energy Technology Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-03-24
Anticipated expiration: 2029-05-22

Abstract

The utility model relates to an engine piston pin's installation device, which comprises a base, a positioning device and a pressing device, wherein the positioning device comprises a first counter bore arranged on the base, a positioning rod and a tension spring sleeved in the first counter bore, one end of the tension spring is arranged at the bottom of the first counter bore, the other end is connected with one end of the positioning rod positioned in the first counter bore, a strut is symmetrically arranged at the two sides of the first counter bore on the base, a cross beam is arranged on the strut, a press machine is arranged on the cross beam, a press rod of the press machine is positioned right above the first counter bore, when the device is used, a pin hole on a piston is aligned with the positioning rod, the positioning rod is sleeved in the pin hole and a small head hole of a pull rod at the same time, the positioning pin is coaxially arranged at one end of the base, the positioning pin is pressed into the pin hole and the small head hole by the, at the moment, the positioning rod extends out of the first counter bore under the elastic force of the tension spring, and the next installation operation can be carried out.

Description

Mounting device for engine piston pin

Technical Field

The utility model belongs to the technical field of the technique of engine erection equipment and specifically relates to an installation device of engine gudgeon pin is related to.

Background

The piston pin of the engine is a part for connecting the small end hole of the connecting rod and the piston, and the piston pin has the effects that the impact force on the piston is transmitted to the connecting rod, the piston pin is in interference fit with the piston and is in sliding sleeve connection with the small end hole of the connecting rod, so when the piston rod is installed, the pin hole in the piston and the small end hole of the connecting rod are aligned, then the piston pin is stressed, the piston pin penetrates through the pin hole and the small end hole in the connecting rod at the same time, and the piston pin is generally set to be tubular.

The Chinese patent with the publication number of CN205394417U discloses a piston pin hole copper bush mounting tool, which comprises a bottom plate, a V-shaped adjusting block and a supporting frame, wherein the supporting frame and the V-shaped adjusting block are both arranged on one side of the bottom plate, which is far away from the ground, the supporting frame is fixedly connected with the bottom plate through a bolt, and the V-shaped adjusting block is in adjustable connection; the top end of the support frame is provided with a screw rod which is parallel to the side wall of the support frame, the screw rod is vertical to one side of the bottom plate, which is far away from the ground, the screw rod is in threaded connection with a sliding block, a spring is arranged between the screw rod and the sliding block, the spring is sleeved on the screw rod, a waist-shaped groove is arranged on the support frame, a guide pin is arranged in the waist-shaped groove, the guide pin is fixedly connected with the sliding block, when in use, a copper sleeve is placed on the guide pin and is subjected to cooling treatment, a piston is placed on the bottom plate and is subjected to heating treatment, then one end of the piston is pushed by a worker, the guide pin is deep into a piston pin hole, when the piston is blocked by a V-shaped adjusting block, the piston stops moving, the copper sleeve and the piston are allowed to return to the temperature for a certain time, the copper sleeve expands, the piston pin hole, the positive effect of convenient operation.

However, when the technical scheme is used, the copper bush is directly pressed into the piston pin hole, so that the sleeve cannot easily enter the piston pin hole and the small end hole of the connecting rod simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an engine gudgeon pin's installation device with guide effect.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: an engine gudgeon pin's installation device which characterized in that: including base and positioner, positioner including setting up first counter bore on the base, cup jointing the locating lever in first counter bore and making the locating lever have the tension spring who stretches out first counter bore trend, tension spring's one end is connected in the bottom of first counter bore, and the other end is located the one end fixed connection in first counter bore with the locating lever, the bilateral symmetry that lies in first counter bore on the base is provided with the pillar, be provided with the crossbeam on the pillar, be provided with the press on the crossbeam, the depression bar of press is located directly over first counter bore.

By adopting the technical scheme, when the mounting device of the engine piston pin is used, the pin hole on the piston and the small end hole of the connecting rod are manually aligned in advance, then the pin hole on the piston is aligned with the positioning rod, the positioning rod is simultaneously sleeved in the pin hole and the small end hole of the pull rod, in the process, if the pin hole and the small end hole of the connecting rod are not completely aligned, the positioning rod is sleeved at one end of the pin hole close to the base, one end of the positioning rod far away from the base is abutted against the connecting rod, at the moment, the piston is positioned by the positioning rod, the small end hole of the connecting rod is aligned with the pin hole by the movable connecting rod, the tension spring enables the positioning rod to penetrate through the small end hole of the connecting rod and extend into one end of the pin hole far away from the base, the positioning pin hole and the small end hole of the connecting rod are positioned, then the positioning pin, and impress the locating pin pinhole and microcephaly downthehole, in this process, the one end that the locating pin is close to the base will butt the locating lever and keep away from tension spring's one end, and impress the locating lever and make tension spring shrink in the first counter bore simultaneously, at this moment, accomplish the installation of locating pin, drive pressure machine promotes the depression bar, take off the piston and the connecting rod of connecting the completion at last, at this moment, the locating lever will receive tension spring's elasticity to stretch out first counter bore, can carry out next installation operation, when the piston pin is impressed pinhole and microcephaly downthehole, the locating lever has carried out the direction to the piston pin and has made the piston pin impress pinhole and microcephal.

The utility model discloses further set up to: the top wall of the base is provided with a groove, the groove is arranged right above the first counter bore, and the length direction of the groove is perpendicular to the cross beam.

Through adopting above-mentioned technical scheme, can place the recess with piston and locating lever in to make the pinhole on the piston be located the bottom of recess, fix a position convenient to use to the piston to the recess like this.

The utility model discloses further set up to: the fixing plate is arranged on the pillar in a sliding mode and located under the cross beam, a through hole is formed in the fixing plate and is coaxially arranged with the pressure rod, the diameter of the through hole is equal to that of the pressure rod, and a chamfer is arranged at one end, far away from the base, of the through hole.

Through adopting above-mentioned technical scheme, after the locating lever runs through piston hole and microcephaly hole, slide the fixed plate to the base direction along the pillar, make the fixed plate be close one side of base and support tight piston, adjust the piston pin well in the through-hole and insert the through-hole, this in-process, the chamfer leads to the piston pin, it is in the through-hole more easily to insert the piston pin, then drive press makes the depression bar pass through the through-hole, and press the piston pin into pinhole and microcephaly downthehole, then the drive press promotes the depression bar, at this moment, the fixed plate can prevent to mention the piston because of frictional force between depression bar and the pinhole, the device's reliability has been improved like this.

The utility model discloses further set up to: the base is provided with a second counter bore, the diameter of the second counter bore is larger than that of the first counter bore and is coaxial with the first counter bore, meanwhile, the second counter bore is located right above the first counter bore, and the depth of the second counter bore is equal to the length of the positioning rod.

Through adopting above-mentioned technical scheme, at the piston pin in-process of impressing, when the locating lever is close the bottom of the first counter bore of one end butt of second counter bore, carry on spacingly to the locating lever, because the locating lever is close the one end that the one end butt piston pin of keeping away from the second counter bore is close the base, so spacing to the piston pin, avoid the piston pin to be close base one side extrusion from the piston, improved the device's reliability like this.

The utility model discloses further set up to: and buffer layers are arranged in the grooves and on one side, close to the base, of the fixed plate.

Through adopting above-mentioned technical scheme, because the cylinder is accurate component, if produce damage such as mar on the cylinder, will seriously influence the work efficiency of motor, consequently, set up the buffer layer in the recess and the fixed plate is close one side of base and will protect the piston can not damaged easily with the connecting rod in assembling process, improved the device's reliability.

The utility model discloses further set up to: the base is rotatably provided with a roller, and the axis of the roller is parallel to the vertical plane where the two pillars are located.

Through adopting above-mentioned technical scheme, the manual work is adjusted the microcephaly hole through the activity connecting rod and is made microcephaly hole align the in-process of pinhole, and the connecting rod can be placed on the cylinder to the connecting rod can slide on the cylinder, convenient operation like this.

The utility model discloses further set up to: the end part of the pressure lever is detachably provided with a pressure lever, and the pressure lever are coaxially arranged.

By adopting the technical scheme, the pressing rods with different diameters can be replaced corresponding to the pin holes with different sizes, so that the applicability of the device is improved.

The utility model discloses further set up to: and one end of the pressure applying rod, which is close to the base, is provided with a positioning block.

By adopting the technical scheme, the piston pins are generally arranged in a tubular shape, and the positioning blocks are inserted into the piston pins when the piston pins are pressed into the pin holes and the small end holes by the pressure rod, so that the piston pins are not easy to bend in the pressing process, and the reliability of the device is improved.

To sum up, the utility model discloses a beneficial technological effect does:

1. the piston pin is guided by the positioning rod, so that the piston pin is more easily pressed into the pin hole and the small-end hole;

2. the fixing plate can prevent the piston from being lifted up due to friction force between the pressure rod and the pin hole, so that the reliability of the device is improved;

3. the pressing rods with different diameters can be replaced at the end parts of the pressing rods corresponding to the pin holes with different sizes, so that the applicability of the device is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of section a-a in fig. 1.

In the figure, 1, a base; 11. a pillar; 12. a cross beam; 13. a press machine; 131. a pressure lever; 132. applying a pressure rod; 133. positioning blocks; 14. a groove; 15. a fixing plate; 151. a through hole; 16. a drum; 2. a positioning device; 21. a first counterbore; 22. positioning a rod; 23. a tension spring; 3. a buffer layer; 4. a second counterbore; 5. a piston; 51. a pin hole; 6. a connecting rod; 61. a small-head hole; 7. a piston pin.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the piston pin mounting device disclosed by the present invention, the piston pin mounting device comprises a base 1 and a positioning device 2, a roller and a V-shaped groove 14 are disposed on the base 1, the positioning device 2 comprises a first counter bore 21, a positioning rod 22 and a tension spring 23, the base 1 is provided with the first counter bore 21 under the groove 14, the base 1 is provided with a second counter bore 4 under the first counter bore 21, the first counter bore 21 and the second counter bore 4 are coaxially disposed, the positioning rod 22 is disposed in the first counter bore 21, one end of the positioning rod 22 close to the second counter bore 4 is fixedly connected with the tension spring 23, the other end of the tension spring 23 is fixedly connected to the bottom of the second counter bore 4, in this embodiment, one end of the positioning rod 22 close to the cross beam 12 is set to be hemispherical, the bottom of the positioning rod 22 is provided with a stopper, the top of the first counter bore 21 extends into the first counter, the diameter of bulge loop equals the diameter of locating lever 22, and the stopper sets up to the column, and the diameter of stopper equals the diameter of first counter bore 21, and the diameter of stopper is greater than the diameter of bulge loop.

Referring to fig. 1 and 2, pillars 11 are symmetrically arranged on two sides of a groove 14 on a base 1 along a straight line where the bottom of the V-shaped groove 14 is located, a cross beam 12 is arranged at the top of each pillar 11, a press 13 is arranged on the cross beam 12, a press rod 131 of the press 13 is located right above a first counter bore 21, a fixing plate 15 is arranged on each pillar 11 and located right below the cross beam 12 in a sliding manner, a through hole 151 for the press rod 131 to pass through is arranged on each fixing plate 15 and located right below the press rod 131, and a chamfer is arranged at one end, close to the cross beam 12, of each through hole 151, wherein the diameter of each press rod 131.

Referring to fig. 1 and 2, the buffer layer 3 is disposed on one side of the fixing plate 15 close to the base 1 and in the groove 14, the roller is disposed on the side of the groove 14 of the base 1, the axis of the roller is parallel to the plane where the two pillars 11 are located, and the roller is located on the straight line where the bottom edge of the groove 14 is located, in this embodiment, the buffer layer 3 is a rubber layer.

Referring to fig. 1 and 2, a pressure applying rod 132 is detachably disposed at an end of the pressure rod 131, the pressure applying rod 132 is disposed coaxially with the pressure rod 131, a positioning block 133 is disposed at an end of the pressure applying rod 132 close to the base 1, in this embodiment, a diameter of the pressure applying rod 132 is equal to a diameter of the pressure rod 131, and a diameter of the positioning block 133 is equal to a diameter of an inner hole of the piston pin 7.

The implementation principle of the embodiment is as follows: when the engine piston pin mounting device is used, the pin hole 51 on the piston 5 and the small end hole 61 of the connecting rod 6 are manually aligned in advance, then the pin hole 51 on the piston 5 is aligned with the positioning rod 22, the piston 5 is placed in the groove 14, the other end of the connecting rod 6 is positioned on the roller, if the pin hole 51 and the connecting rod 6 are completely aligned, the positioning rod 22 is simultaneously sleeved in the pin hole 51 and the small end hole 61 of the pull rod under the elastic force of the tension spring 23, if the pin hole 51 and the small end hole 61 of the connecting rod 6 are not completely aligned, the positioning rod 22 is sleeved at one end of the pin hole 51 close to the base 1, one end of the positioning rod 22 far away from the base 1 is abutted on the connecting rod 6, at the moment, the pin hole 51 and the small end hole 61 are aligned by the movable connecting rod 6, the positioning rod 22 penetrates through the pin hole 51 and the small end hole 61 under the elastic force of the tension spring 23, the piston 5 and the connecting rod 6 are positioned, then the fixing plate 15 slides towards the base 1 along the pillar 11, the buffer layer 3 arranged on one side, close to the base 1, of the fixing plate 15 is abutted against the piston 5, then the piston 5 pin is placed in the through hole 151, in the process, the piston pin 7 is guided by the chamfer, the end part of the pressure rod 131 is replaced by a pressure applying rod 132 with the required diameter according to the diameter of the pin hole 51, the pressure machine 13 is driven to drive the pressure rod 131 to move towards the base 1, the positioning block 133 arranged on one end, close to the base 1, of the pressure applying rod 132 is sleeved in the inner hole of the piston pin 7, one end, close to the base 1, of the pressure applying rod 132 is abutted against one end, far away from the base 1, the pressure machine 13 continues to drive the pressure rod 131 to move towards the base 1, the piston pin 7 is pressed into the pin hole 51 and the small head hole 61, when one end, close to the second piston pin, locating lever 22 will also carry on spacingly to piston pin 7, make piston pin 7 can no longer continue to be impressed, accomplish the installation of piston pin 7, at depression bar 131 pressure testing in-process, the buffer layer 3 that sets up in the recess 14 will protect the difficult damage that receives in surface of piston 5 butt recess 14, drive pressure machine 13 promotes depression bar 131, take off the piston 5 and the connecting rod 6 of connecting the completion at last, at this moment, locating lever 22 will receive tension spring 23's elasticity to stretch out first counter bore 21, can carry out the installation operation next time.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An engine gudgeon pin's installation device which characterized in that: including base (1) and positioner (2), positioner (2) are including setting up first counter bore (21) on base (1), cup joint locating lever (22) in first counter bore (21) and make locating lever (22) have tension spring (23) of stretching out first counter bore (21) trend, the one end of tension spring (23) is connected in the bottom of first counter bore (21), and the other end is located the one end fixed connection in first counter bore (21) with locating lever (22), the bilateral symmetry that lies in first counter bore (21) on base (1) is provided with pillar (11), be provided with crossbeam (12) on pillar (11), be provided with press (13) on crossbeam (12), depression bar (131) of press (13) are located directly over first counter bore (21).

2. An engine piston pin mounting arrangement as claimed in claim 1, wherein: the top wall of the base (1) is provided with a groove (14), the groove (14) is arranged right above the first counter bore (21), and the length direction of the groove (14) is perpendicular to the cross beam (12).

3. An engine piston pin mounting arrangement as claimed in claim 2, wherein: sliding on pillar (11) is provided with fixed plate (15), fixed plate (15) are located crossbeam (12) under, be provided with through-hole (151) on fixed plate (15), through-hole (151) and depression bar (131) coaxial setting, the diameter of through-hole (151) equals the diameter of depression bar (131), the one end that base (1) was kept away from in through-hole (151) is provided with the chamfer.

4. An engine piston pin mounting arrangement as claimed in claim 1, wherein: the base (1) is provided with a second counter bore (4), the diameter of the second counter bore (4) is larger than that of the first counter bore (21) and is coaxially arranged with the first counter bore (21), meanwhile, the second counter bore (4) is located right above the first counter bore (21), and the depth of the second counter bore (4) is equal to the length of the positioning rod (22).

5. An engine piston pin mounting arrangement as claimed in claim 3, wherein: buffer layers (3) are arranged in the groove (14) and on one side, close to the base (1), of the fixing plate (15).

6. An engine piston pin mounting arrangement as claimed in claim 1, wherein: the base (1) is rotatably provided with a roller (16), and the axis of the roller (16) is parallel to the vertical plane where the two pillars (11) are located.

7. An engine piston pin mounting arrangement as claimed in claim 1, wherein: the end part of the pressure lever (131) is detachably provided with a pressure applying lever (132), and the pressure applying lever (132) and the pressure lever (131) are coaxially arranged.

8. An engine piston pin mounting arrangement as claimed in claim 7, wherein: one end of the pressure applying rod (132) close to the base (1) is provided with a positioning block (133).