CN202180446U

CN202180446U - Pin pulling device

Info

Publication number: CN202180446U
Application number: CN201120265652XU
Authority: CN
Inventors: 邹智伶; 陈展; 李勇
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Changsha Zoomlion Environmental Industry Co Ltd
Priority date: 2011-07-26
Filing date: 2011-07-26
Publication date: 2012-04-04
Anticipated expiration: 2021-07-26

Abstract

The utility model discloses a pin pulling device, which comprises a telescopic drive member, a drawing sleeve, more than two drawing members, and a guide bushing sleeved onto the end portion of a positioning pin to be pulled out and cooperated with a positioning pin seat in a tightly pushing manner. The telescopic end of the drive member is also cooperated with the blind end of the guide bushing in a tightly pushing manner. The drawing sleeve is threadedly cooperated and sleeved onto the external surface of the drive member. One ends of the drawing members are connected with the drawing sleeve and the other ends of the drawing members are cooperated with the end portion of the positioning pin so as to realize the clamping. The pin pulling device has the advantages of simple structure, convenient and fast pin-pulling, no noises during the pin-pulling process, labor saving, time saving and wide application range.

Description

A kind of pin pulling out device

Technical field

The utility model relates to hardware & tools, specially refers to a kind of pin pulling out device that is used for extracting the workpiece alignment pin.

Background technology

At present, the main mode of pulling pin is as shown in Figure 1: in alignment pin 4 afterbody tapping holes, the bar 6 of will pulling pin again is connected with alignment pin 4 through screw thread.Through beat the impulsive force of the bar 6 of pulling pin with slide block 7, extract alignment pin 4.There is following shortcoming in the existing mode of pulling pin:

1) pull pin bar 6 is connected processing trouble, use inconvenience with alignment pin 4 through screw thread;

2) beat when pulling pin bar 6 with slide block 7, the noise ratio of beaing is bigger, and the impulsive force of beaing in the process is inhomogeneous, strengthens the difficulty of pulling pin;

3) it is limited to beat dynamics, is difficult to extract for tighter bearing pin; Or the time of pulling pin is longer.

The utility model content

The utility model technical problem to be solved is: to the deficiency of prior art, a kind of simple in structure, convenient and swift, noiselessness when pulling pin of pulling pin, pin pulling out device time saving and energy saving and applied widely are provided.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of pin pulling out device; Comprise telescopic actuator, drawing sleeve, the drawing part more than two and be sheathed on and wait to extract the end of alignment pin and hold out against the fairlead that cooperates with location key seat; The flexible end of said actuator holds out against with the blind end of said fairlead and cooperates; Said drawing sleeve is sheathed on the outer surface of actuator through threaded engagement, and an end of said drawing part is connected on the drawing sleeve, and the other end of said drawing part cooperates with the end of alignment pin and forms clamping.

As further improvement to the utility model:

Offer on the sidewall of said fairlead and let drawing part drive alignment pin more than two along the axially movable groove of dodging of fairlead.

Abutting end with alignment pin on the said drawing part is provided with hook, offers the drawing hole that cooperates with said hook on the said alignment pin.

The end periphery of said alignment pin is evenly equipped with and the said nested boss that cooperates of groove of dodging, and said drawing hole is opened on the said boss.

Said position length of dodging the length of groove greater than alignment pin.

Said drawing part and drawing sleeve are hinged and can or rotate around the pin joint swing.

Said drawing part forms by the rod member more than two is hinged successively.

Said actuator is oil cylinder or cylinder.

Compared with prior art, the advantage of the utility model is:

1, the pin pulling out device of the utility model; Through adopting telescopic actuator to cooperate drawing part to pull pin, during use the openend of fairlead is sheathed on and waits to extract the end of alignment pin and contact with location key seat (or alignment pin installation end face), the flexible end of actuator withstands the blind end of fairlead; Drawing part forms clamping with the alignment pin end and cooperates; Draw on a top one through actuator, can make between alignment pin and the fairlead and produce relative displacement, and alignment pin is extracted smoothly.In the process of pulling pin, the power of pulling pin is even, noiselessness when pulling pin, and have the bigger power of pulling pin, and the bearing pin that the general mode of pulling pin of can extracting can't be extracted can be realized extracting of all kinds of bearing pins; Has advantage simple in structure, that use is reliable, convenient and swift, time saving and energy saving.

2, the pin pulling out device of the utility model; Offer the drawing hole in the outer end of alignment pin, the abutting end with alignment pin on the drawing part is provided with hook, hook directly and the drawing hole be connected; Offer vertically on the fairlead sidewall and dodge groove; Be convenient to drawing part drive alignment pin and move axially along fairlead, make structure simpler, processing and manufacturing is easy.

3, the pin pulling out device of the utility model; Periphery is provided with and dodges the nested boss that cooperates of groove in the end of alignment pin, and the drawing hole is located on the boss, and alignment pin is pulled out when in fairlead, moving; Boss is embedded to dodge in the groove and moves; Make its guidance quality better, stressed more even, help extracting fast of alignment pin.

4, the pin pulling out device of the utility model, drawing part are articulated on the drawing sleeve and can or rotate around the pin joint swing, and drawing part forms by the rod member more than two is hinged successively, are convenient to the length according to actual conditions adjustment drawing part, and be applied widely.

Description of drawings

Fig. 1 is the prior art constructions sketch map;

Fig. 2 is the structural representation of the utility model pin pulling out device when not pulling pin;

Fig. 3 is the structural representation after the utility model pin pulling out device is pulled pin;

Fig. 4 is the cross-sectional structure sketch map of alignment pin end;

Fig. 5 is the cross-sectional structure sketch map of fairlead in the utility model;

Fig. 6 is the cross-sectional structure sketch map when fairlead cooperates with alignment pin in the utility model.

Marginal data

11, actuator; 12, drawing sleeve; 13, drawing part; 131, hook; 2, fairlead; 21, dodge groove; 4, alignment pin; 41, drawing hole; 42, boss; 5, location key seat; 6, the bar of pulling pin; 7, slide block.

The specific embodiment

Below in conjunction with specific embodiment and accompanying drawing the utility model is further described.

Like Fig. 2～shown in Figure 6; The pin pulling out device of the utility model; Comprise telescopic actuator 11, drawing sleeve 12, the drawing part 13 more than two with fairlead 2, fairlead 2 is the tubular of an end opening one end sealing, and the openend of fairlead 2 is sheathed on to wait to extract the end of alignment pin 4 and hold out against with location key seat 5 and cooperates; The flexible end of actuator 11 holds out against with the blind end of fairlead 2 and cooperates; Drawing sleeve 12 is sheathed on the outer surface of actuator 11 through threaded engagement, and an end of drawing part 13 is connected on the drawing sleeve 12, and the other end of drawing part 13 cooperates with the end of alignment pin 4 and forms clamping.

Through adopting telescopic actuator to cooperate drawing part to pull pin; During use the openend of fairlead is sheathed on and waits to extract the end of alignment pin and contact with location key seat (or alignment pin installation end face); The flexible end of actuator withstands the blind end of fairlead, and drawing part forms clamping with the alignment pin end and cooperates, and draws through a top one of actuator; Can make between alignment pin and the fairlead and produce relative displacement, alignment pin is extracted smoothly.In the process of pulling pin, the power of pulling pin is even, noiselessness when pulling pin, and have the bigger power of pulling pin, and the bearing pin that the general mode of pulling pin of can extracting can't be extracted can be realized extracting of all kinds of bearing pins.Simple in structure, use reliable, convenient and swift, time saving and energy saving.

Further, in the present embodiment, drawing part 13 is provided with three; Be uniformly distributed in the circumferential of drawing sleeve 12; For being articulated and connected, drawing part 13 can or rotate around the pin joint swing between drawing part 13 and the drawing sleeve 12, and drawing part 13 forms by the rod member more than two is hinged successively; Be convenient to clamping angle and length according to actual conditions adjustment drawing part, applied widely.Offer on fairlead 2 sidewalls and dodge groove 21; Being used to let drawing part 13 drive alignment pin 4 moves axially along fairlead 2; The quantity of dodging groove 21 equates with the quantity of drawing part 13; Dodge groove 21 and extend to blind end, and its length is convenient to extracting of alignment pin 4 greater than the position length of alignment pin 4 from the openend of fairlead 2.Drawing part 13 is provided with hook 131 with the abutting end of alignment pin 4; The end of alignment pin 4 evenly offers three drawing holes 41; Drawing hole 41 is along the radially extension of alignment pin 4, and the position in three drawing holes 41 is all with to dodge groove 21 positions corresponding, three hooks 131 directly and drawing hole 41 be connected; When extracting alignment pin 4, each bar hook 131 can move axially along dodging groove 21.

Further, in the present embodiment, the end periphery of alignment pin 4 evenly is provided with three boss 42 that extend vertically; Three drawing holes 41 are divided on each boss 42, boss 42 can with dodge 21 nested cooperations of groove, alignment pin 4 is extracted from location key seat 5 and to fairlead 2 in when mobile; Boss 42 is embedded to dodge in the groove 21 and moves; Make its guidance quality better, stressed more even, help extracting fast of alignment pin 4.

In the present embodiment, actuator 11 is hydraulic jack or cylinder.

Operation principle: during use; The openend of fairlead 2 is sheathed on waits to extract the end of alignment pin 4 and contact with location key seat 5 (or alignment pin installation end face); The tailpiece of the piston rod of hydraulic jack or cylinder withstands the blind end of fairlead 2, and drawing part 13 is connected with the drawing hole 41 that alignment pin 4 ends are offered, and draws through a top one of hydraulic jack or cylinder and drawing part 13; Can make between alignment pin 4 and the fairlead 2 and produce relative displacement, alignment pin 4 is extracted smoothly.

The above only is the preferred implementation of the utility model, and the protection domain of the utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to the protection domain of the utility model.Should be pointed out that for those skilled in the art,, all should be regarded as the protection domain of the utility model in the some improvement and the retouching that do not break away under the utility model principle prerequisite.

Claims

1. pin pulling out device; It is characterized in that: comprise telescopic actuator (11), drawing sleeve (12), the drawing part more than two (13) and be sheathed on the end of alignment pin to be extracted (4) and hold out against the fairlead (2) that cooperates with location key seat (5); The flexible end of said actuator (11) holds out against with the blind end of said fairlead (2) and cooperates; Said drawing sleeve (12) is sheathed on the outer surface of actuator (11) through threaded engagement; One end of said drawing part (13) is connected on the drawing sleeve (12), and the other end of said drawing part (13) cooperates the formation clamping with the end of alignment pin (4).

2. pin pulling out device according to claim 1 is characterized in that: offer on the sidewall of said fairlead (2) and let drawing part (13) drive alignment pin (4) along the axially movable groove (21) of dodging of fairlead (2) more than two.

3. pin pulling out device according to claim 2 is characterized in that: said drawing part (13) is gone up and the abutting end of alignment pin (4) is provided with hook (131), offers the drawing hole (41) that cooperates with said hook (131) on the said alignment pin (4).

4. pin pulling out device according to claim 3 is characterized in that: the end periphery of said alignment pin (4) is evenly equipped with and the said nested boss that cooperates of groove (21) (42) of dodging, and said drawing hole (41) is opened on the said boss (42).

5. pin pulling out device according to claim 4 is characterized in that: said position length of dodging the length of groove (21) greater than alignment pin (4).

6. according to each described pin pulling out device in the claim 1～5, it is characterized in that: said drawing part (13) is hinged with drawing sleeve (12) and can or rotates around the pin joint swing.

7. according to each described pin pulling out device in the claim 1～5, it is characterized in that: said drawing part (13) forms by the rod member more than two is hinged successively.

8. according to each described pin pulling out device in the claim 1～5, it is characterized in that: said actuator (11) is oil cylinder or cylinder.