CN201944059U - Telescopic pin, telescopic pin insert-draw mechanism for crane and crane - Google Patents
Telescopic pin, telescopic pin insert-draw mechanism for crane and crane Download PDFInfo
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- CN201944059U CN201944059U CN2010206965551U CN201020696555U CN201944059U CN 201944059 U CN201944059 U CN 201944059U CN 2010206965551 U CN2010206965551 U CN 2010206965551U CN 201020696555 U CN201020696555 U CN 201020696555U CN 201944059 U CN201944059 U CN 201944059U
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- 230000002950 deficient Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
The utility model relates to a telescopic pin, a telescopic pin insert-draw mechanism for a crane and the crane. The telescopic pin comprises a main body, a pin body, a stud, a groove and an elastic element. The pin body is telescopically arranged in the main body and partly protrudes out of the main body when the pin body stretches out. The stud penetrates into the pin body in a manner that the axis of the stud is perpendicular to the axis of the pin body. The groove extending along the axial direction of the pin body is arranged on the wall of the main body round the pin body. The stud is capable of moving along the groove. A cavity formed between the pin body and the main body contains the elastic element. The telescopic pin insert-draw mechanism utilizes the elastic element to realize ahead-of-time releasing of the telescopic pin, does not need to accurately center the telescopic pin with a pin hole on a crane jib, reduces control difficulty, realizes separation of extending motion of the telescopic pin and retraction motion of a hydro-cylinder, and shortens extending and retraction time of the crane jib.
Description
Technical field
The utility model relates to the hoist field, relates in particular to a kind of flexible pin, a kind of hoist with telescopic pin mobile mechanism and hoist with this flexible pin or telescopic pin mobile mechanism.
Background technique
The oval principal arm of the truck crane of present large-tonnage both domestic and external, super-tonnage generally adopts the extending means of single-cylinder bolt, and this class extending means mainly is made up of the bearing pins on bolt mechanism, telescopic oil cylinder, the arm and other annex.Bolt mechanism is the critical component of telescoping boom.Bolt mechanism mainly is made up of telescopic pin mobile mechanism and carrying pin inserting mechanism and both mutual interlocking gears.
At present the type of belt drive of telescopic pin mobile mechanism mainly contains two kinds: a kind of is directly to drive flexible pin withdrawal by hydraulic jack, utilizes elastic element on the hydraulic jack pin that will stretch to insert the shank hole; Another kind is the flexible pin of plug that structural members such as slide block, shift fork is carried out the one-level transmission by hydraulic jack.
Before hydraulic jack is installed in a kind of telescopic pin mobile mechanism main body exist structure shape complexity, requirement on machining accuracy height, heat treatment requirements height, manufacture difficulty greatly, defective such as easy-maintaining not.
A kind of telescopic pin mobile mechanism in back require more accurate flexible pin and the pin-and-hole on the arm to moderate, increased the difficulty of electrical control, and increased the time of hoisting arm expansion relatively.
The model utility content
The utility model provides a kind of hoist telescopic pin mobile mechanism, to solve problems such as telescopic pin mobile mechanism complex structure of the prior art as mentioned above, required precision height, centering difficulty.
For solving the problems of the technologies described above, the utility model provides a kind of flexible pin, comprising: main body; Shank, telescopically are arranged in the main body and partly protrude in outside the main body when stretching out; Double-screw bolt, described double-screw bolt is arranged in the shank in the mode of the axis normal of its axis and shank, and the wall around shank of main body is provided with the groove that extends along the axial direction of shank, and described double-screw bolt is arranged to and can be moved along described groove; And elastic element, be contained in the cavity that is formed between shank and the main body.
Further, described cavity is limited by back cover cylinder groove on the main body and the elastic element groove on the shank.
Further, main body comprises first main body and second main body, and described first main body and second main body link together by the bolt that is arranged on the end flange.
Further, the shank left and right symmetrically is arranged in the shank hole on first main body and the second external side of main body face.
The utility model also provides a kind of hoist telescopic pin mobile mechanism, comprises aforesaid flexible pin.
Further, telescopic pin mobile mechanism of the present utility model also comprises: telescopic oil cylinder is equipped with the guide rail that longitudinally is provided with up and down symmetrically on its outer surface; Hydraulic jack, its rear end are fixed on the telescopic oil cylinder by bearing and with respect to the telescopic oil cylinder bilateral symmetry; Slide block is connected with the piston rod of hydraulic jack by the connecting pin that is fixed in the slide block rear end, and described slide block is driven by hydraulic jack and along the guide rail slide relative; And the shift fork arm, being hinged on the telescopic oil cylinder by bearing pin, the rear end of shift fork arm has the roller that rolls relatively along slide block, and the Front-end Design of shift fork arm is circular-arc and hinged by double-screw bolt and shank.
Further, first main body and the second main body left and right symmetrically are connected on the cylinder barrel flange of telescopic oil cylinder.
Further, telescopic pin mobile mechanism of the present utility model also comprises spring reset mechanism, this spring reset mechanism comprises extension spring and the support that is arranged symmetrically in the hydraulic jack both sides up and down, the two ends of described extension spring be hooked on respectively on the support and the connecting pin of slide block rear end on.
Further, slide block is a wedge block, and the shoe surface that roller rolls relatively is the rear end that the big end on inclined-plane and inclined-plane is positioned at slide block.
Alternatively, the inside of slide block has oblique chute, and roller rolls in described oblique chute relatively, and the big end of oblique chute is positioned at the rear end of slide block.
Further, on the surface to the shift fork arm, have the laterally zygomorphic U-groove bevel in central cross plane with the shank hole in first main body and second main surface, the front end of shift fork arm is done the rotation campaign in described U type groove.
Further, shank also has the vent with shank hole and external communications.
Hoist of the present utility model has following technique effect with telescopic pin mobile mechanism:
Under the driving of hydraulic jack, the rotation by the shift fork arm realizes the retraction movement of flexible pin, but the motion of stretching out of flexible pin is that elastic force by elastic element realizes.Therefore, realized that the motion of stretching out of flexible pin separates with the retraction movement of hydraulic jack, reduced the contraction time of arm.
Be divided into first main body and second main body and use hydraulic jack to carry out under the situation of one-level transmission in main body, utilize elastic element to realize the release in advance of flexible pin, promptly before flexible pin is gone back the pin-and-hole of no show arm, flexible pin is being pressed under the effect of elastic element on the side plate of arm afterbody, when treating that flexible pin arrives the pin-and-hole position of arm, flexible pin is sprung into pin-and-hole by elastic element.Therefore, need not flexible pin and the accurate centering of pin-and-hole have been reduced the control difficulty.
The utility model also provides a kind of hoist, it is characterized in that, comprises aforesaid flexible pin or telescopic pin mobile mechanism.
Should be appreciated that above generality is described and the following detailed description is all enumerated and illustrative, purpose is in order to provide further instruction to claimed the utility model.
Description of drawings
Accompanying drawing constitutes the part of this specification, is used to help further understand the utility model.These accompanying drawings illustrate preferred implementation of the present utility model, and are used for illustrating principle of the present utility model with specification, in the accompanying drawing:
Fig. 1 schematically shows the plan view of a preferred implementation of the present utility model;
Fig. 2 schematically shows the plan view of preferred implementation shown in Figure 1; And
Fig. 3 is according to A-A sectional drawing shown in Figure 1.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 3, flexible pin of the present utility model comprises: main body, this main body and then comprise first main body 14 and second main body, 15, the first main bodys 14 and second main body 15 link together by the bolt that is arranged on the end flange; Shank 1, telescopically are arranged in first main body 14 and second main body 15 and partly protrude in outside first main body 14 and second main body 15 when stretching out; Double-screw bolt 12, this double-screw bolt is arranged in the shank 1 up and down in the mode of the axis normal of its axis and shank 1 symmetrically, the outer wall around shank 1 of first main body 14 and second main body 15 is provided with the groove that extends along the axial direction of shank 1, and double-screw bolt 12 is arranged to and can be moved along described groove; And elastic element 13, be contained in the cavity that is formed between shank 1 and first main body 14 and second main body 15.
Particularly, elastic element 13 is contained in the cavity that is limited by back cover cylinder groove 18 on first main body 14 and second main body 15 and the elastic element groove 17 on the shank 1.Shank 1 left and right symmetrically is arranged in the shank hole 16 on first main body 14 and second main body, 15 outer side surfaces.Elastic element 13 is a stage clip.
Fig. 1 schematically shows the plan view of a preferred implementation of the present utility model; Fig. 2 schematically shows the plan view of preferred implementation shown in Figure 1.
As depicted in figs. 1 and 2, hoist of the present utility model comprises flexible pin shown in Figure 3 with telescopic pin mobile mechanism, also comprises: telescopic oil cylinder 8 is equipped with the guide rail 4 that longitudinally is provided with up and down symmetrically on its outer surface; Hydraulic jack 6, its rear end are fixed on the telescopic oil cylinder 8 by bearing and with respect to the telescopic oil cylinder bilateral symmetry; Slide block 5 is connected with the piston rod of hydraulic jack 6 by the connecting pin 7 that is fixed in the slide block rear end, and slide block 5 is driven by hydraulic jack 6 and along guide rail 4 slide relative; Shift fork arm 2, be hinged on by bearing pin 11 on the bearing of telescopic oil cylinder 8 sides, the rear end of shift fork arm 2 has the roller 3 that rolls relatively along slide block 5, and the front end of shift fork arm 2 is a fork-shaped, and hinged by the double-screw bolt 12 that vertically passes shank 1 with shank 1, double-screw bolt 12 is symmetrical about in the of 1 with respect to shank.
Particularly, first main body 14 and second main body, 15 left and right symmetricallies are connected on the cylinder barrel flange of telescopic oil cylinder 8.As shown in Figure 3, the piston rod hole 21 that the piston rod of the opposite inner face of first main body 14 and second main body 15 formation telescopic oil cylinder 8 passes through, and piston rod hole 21 does not communicate with back cover cylinder groove 18.
Telescopic pin mobile mechanism of the present utility model also comprises spring reset mechanism, described spring reset mechanism comprises extension spring 9 and the support 10 that is arranged symmetrically in hydraulic jack 6 both sides up and down, the two ends of extension spring 9 be hooked on the support 10 respectively and the connecting pin 7 of slide block 5 rear ends on.
In a preferred implementation of the present utility model, slide block 5 is a wedge block, and the surface that roller 3 carries out the slide block 5 of slide relative is the inclined-plane, and the big end on inclined-plane is positioned at the rear end of slide block 5.When pulling pin, under the driving of hydraulic jack 6, the piston rod of hydraulic jack 6 stretches out, connecting pin 7 by being fixed in slide block 5 rear ends drive slide blocks 5 along guide rail 4 to front slide, extension spring 9 is stretched, the roller 3 of shift fork arm 2 rear ends rolls relatively on the inclined-plane of slide block 5 and rises, make that the front end of shift fork arm 2 is that the rotation campaign is carried out at the center with bearing pin 11, thereby the double-screw bolt 12 that passes shank 1 overcomes the elastic force of elastic element 13 does straight line motion, drive shank 1 and move, thereby shank 1 is withdrawn from the pin-and-hole of arm along the shank hole 16 on the outer side surface of first main body 14 and second main body 15.
During latch, hydraulic jack 6 action of withdrawing, under the spring-back force effect of extension spring 9, slide block 5 moves to initial position along guide rail 4; Simultaneously, under the resilient force of elastic element 13, shank 1 moves along the shank hole 16 on the outer side surface of first main body 14 and second main body 15, stretch out action, shank 1 is discharged in advance and is pressed on the side plate of arm afterbody, when treating that shank 1 arrives the pin-and-hole position of arm, shank 1 is sprung into pin-and-hole by elastic element 13; Shank 1 drives double-screw bolt 12 motions of passing wherein, makes that the front end of shift fork arm 2 is that the rotation campaign is carried out at the center with bearing pin 11, and the roller 3 of shift fork arm 2 rear ends rolls relatively on the inclined-plane of slide block 5 and descends.
In another preferred implementation of the present utility model, the inside of slide block 5 has oblique chute, and the big end of this oblique chute is positioned at the rear end of slide block 5.When pulling pin, under the driving of hydraulic jack 6, the piston rod of hydraulic jack 6 stretches out, connecting pin 7 by being fixed in slide block 5 rear ends drive slide blocks 5 along guide rail 4 to front slide, extension spring 9 is stretched, the roller 3 of shift fork arm 2 rear ends rolls relatively in the oblique chute of slide block 5 and rises, make that the front end of shift fork arm 2 is that the rotation campaign is carried out at the center with bearing pin 11, thereby the elastic force that overcomes elastic element 13 by the double-screw bolt 12 that passes shank 1 is done straight line motion, drive shank 1 and move, thereby shank 1 is withdrawn from the pin-and-hole of arm along the shank hole 16 on the outer side surface of first main body 14 and second main body 15.
During latch, hydraulic jack 6 action of withdrawing, under the spring-back force effect of extension spring 9, slide block 5 moves to initial position along guide rail 4; Simultaneously, under the resilient force of elastic element 13, shank 1 moves along the shank hole 16 on the outer side surface of first main body 14 and second main body 15, stretch out action, shank 1 is discharged in advance and is pressed on the side plate of arm afterbody, when treating that shank 1 arrives the pin-and-hole position of arm, shank 1 is sprung into pin-and-hole by elastic element 13; Shank 1 drives double-screw bolt 12 motions of passing wherein, makes that the front end of shift fork arm 2 is that the rotation campaign is carried out at the center with bearing pin 11, and the roller 3 of shift fork arm 2 rear ends rolls relatively in the oblique chute of slide block 5 and descends.
Undertaken under the situation of one-level transmission by structural members such as 6 pairs of slide blocks 5 of hydraulic jack, shift fork arms 2, the utility model utilizes elastic element 13 to realize the release in advance of shank 1, be that shank 1 is before the pin-and-hole of going back on the no show arm, just ejected by elastic element 13, be pressed on the side plate of arm afterbody, when treating that shank 1 arrives the pin-and-hole position, shank 1 is sprung into pin-and-hole by elastic element 13.Therefore, do not need the pin-and-hole on shank 1 and the arm accurately after the centering, is emitted shank 1 again, reduced the control difficulty, reduced the contraction time of arm.
As shown in Figure 2, first main body 14 and second main body 15 have the central cross plane laterally zygomorphic U type groove 19 with shank hole 16 in the face of on the surface of shift fork arm 2 front ends, and the front end of shift fork arm 2 is done the rotation campaign in U type groove 19.
In addition, on first main body 14 and second main body 15, has rectangle guiding groove 20, this rectangle guiding groove 20 is than the central cross plane in U-groove bevel 19 more close shank holes 16 and with respect to symmetry about the central cross plane in shank hole 16, and, this rectangle guiding groove 20 is slightly larger than the diameter of double-screw bolt 12 along the size of telescopic oil cylinder 8 longitudinal axis directions, makes double-screw bolt 12 slide in guiding groove 20 and carries out straight line motion.
Telescopic pin mobile mechanism of the present utility model, rotation action by the shift fork arm realizes the action of contracting of flexible pin, the elastic force by elastic element realize flexible sell stretch action, therefore, the motion of stretching out of flexible pin separates with the retraction movement of hydraulic jack, has reduced the hoisting arm expansion time.In addition, realized the release in advance of flexible pin by elastic element, the elastic element pin that will stretch is pressed on the side plate of arm afterbody, when waiting to arrive the pin-and-hole position of arm, flexible pin is sprung into this pin-and-hole, therefore, and after do not need to stretch pin and the accurate centering of pin-and-hole, emit flexible pin again, reduced the control difficulty.And this model utility possesses simultaneously, and the processing technology demand is low, quick detachable on the structure, advantage such as easy to maintenance.
The above is a preferred implementation of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (13)
1. a flexible pin is characterized in that, comprising:
Main body;
Shank (1), telescopically are arranged in the described main body and partly protrude in outside the described main body when stretching out;
Double-screw bolt (12), described double-screw bolt is arranged in the described shank (1) in the mode of the axis normal of its axis and described shank, the wall around shank (1) of described main body is provided with the groove that extends along the axial direction of described shank, and described double-screw bolt (12) is arranged to and can be moved along described groove; And
Elastic element (13) is contained in the cavity that is formed between described shank (1) and the described main body.
2. flexible pin according to claim 1 is characterized in that, described cavity is limited by back cover cylinder groove (18) on the described main body and the elastic element groove (17) on the described shank (1).
3. flexible pin according to claim 1 is characterized in that, described main body comprises first main body (14) and second main body (15), and described first main body and second main body link together by the bolt that is arranged on the end flange.
4. flexible pin according to claim 3 is characterized in that, described shank (1) left and right symmetrically is arranged in the shank hole (16) on the outer side surface of described first main body (14) and second main body (15).
5. a hoist telescopic pin mobile mechanism is characterized in that, comprises each described flexible pin in the claim 1 to 4.
6. telescopic pin mobile mechanism according to claim 5 is characterized in that, comprising:
Telescopic oil cylinder (8) is equipped with the guide rail (4) that longitudinally is provided with up and down symmetrically on its outer surface;
Hydraulic jack (6), its rear end is fixed on the described telescopic oil cylinder (8) and with respect to described telescopic oil cylinder (8) bilateral symmetry by bearing;
Slide block (5), the connecting pin (7) of the rear end by being fixed in described slide block is connected with the piston rod of described hydraulic jack (6), and described slide block (5) is driven by described hydraulic jack (6) and along described guide rail (4) slide relative; And shift fork arm (2), be hinged on the described telescopic oil cylinder (8) by bearing pin (11), the rear end of described shift fork arm (2) has the roller (3) that rolls relatively along described slide block (5), and the Front-end Design of described shift fork arm (2) is a fork-shaped and hinged by described double-screw bolt (12) and described shank (1).
7. telescopic pin mobile mechanism according to claim 6 is characterized in that,
Described first main body (14) and second main body (15) left and right symmetrically are connected on the cylinder barrel flange of described telescopic oil cylinder (8).
8. telescopic pin mobile mechanism according to claim 6 is characterized in that,
Also comprise spring reset mechanism, described spring reset mechanism comprises extension spring (9) and the support (10) that is arranged symmetrically in described hydraulic jack (6) both sides up and down, the two ends of described extension spring (9) be hooked on respectively that described support (10) is gone up and the connecting pin (7) of described slide block (5) rear end on.
9. telescopic pin mobile mechanism according to claim 6 is characterized in that, described slide block (5) is a wedge block, and the surface of the described slide block (5) that described roller (3) rolls relatively is the rear end that the big end on inclined-plane and inclined-plane is positioned at described slide block.
10. telescopic pin mobile mechanism according to claim 6 is characterized in that, the inside of described slide block (5) has oblique chute, and described roller (3) rolls in described oblique chute relatively, and the big end of described oblique chute is positioned at the rear end of described slide block.
11. telescopic pin mobile mechanism according to claim 6, it is characterized in that, face on the surface of described shift fork arm (2) front end in described first main body (14) and second main body (15), have the laterally zygomorphic U-groove bevel in central cross plane (19) with described shank hole (16), the front end of described shift fork arm (2) is done the rotation campaign in described U type groove (19).
12. telescopic pin mobile mechanism according to claim 6 is characterized in that, described shank (1) also has the vent of described shank hole (16) with external communications.
13. a hoist is characterized in that, comprises in the claim 1 to 4 each described flexible pin or according to each described telescopic pin mobile mechanism in the claim 6 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206965551U CN201944059U (en) | 2010-12-31 | 2010-12-31 | Telescopic pin, telescopic pin insert-draw mechanism for crane and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206965551U CN201944059U (en) | 2010-12-31 | 2010-12-31 | Telescopic pin, telescopic pin insert-draw mechanism for crane and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201944059U true CN201944059U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206965551U Expired - Lifetime CN201944059U (en) | 2010-12-31 | 2010-12-31 | Telescopic pin, telescopic pin insert-draw mechanism for crane and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201944059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176218A1 (en) * | 2014-05-20 | 2015-11-26 | 徐州重型机械有限公司 | Single-cylinder bolt stretching device and crane |
| CN112459317A (en) * | 2020-11-30 | 2021-03-09 | 紧固仓盟(江苏)科技有限公司 | Folding elastic pin for curtain wall system |
-
2010
- 2010-12-31 CN CN2010206965551U patent/CN201944059U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176218A1 (en) * | 2014-05-20 | 2015-11-26 | 徐州重型机械有限公司 | Single-cylinder bolt stretching device and crane |
| US10479658B2 (en) | 2014-05-20 | 2019-11-19 | Xuzhou Heavy Machinery Co, Ltd. | Telescopic device of single-cylinder latch type and crane |
| CN112459317A (en) * | 2020-11-30 | 2021-03-09 | 紧固仓盟(江苏)科技有限公司 | Folding elastic pin for curtain wall system |
| CN112459317B (en) * | 2020-11-30 | 2022-04-19 | 紧固仓盟(江苏)科技有限公司 | Folding elastic pin for curtain wall system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410013 No. 361 South silver basin, Hunan, Changsha Patentee after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: 410013 No. 361 South silver basin, Hunan, Changsha Patentee before: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |