CN114877023A - Telescopic arm type drag chain structure - Google Patents
Telescopic arm type drag chain structure Download PDFInfo
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- CN114877023A CN114877023A CN202210397438.2A CN202210397438A CN114877023A CN 114877023 A CN114877023 A CN 114877023A CN 202210397438 A CN202210397438 A CN 202210397438A CN 114877023 A CN114877023 A CN 114877023A
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- chain
- arm
- telescopic
- tow
- mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G13/00—Chains
- F16G13/12—Hauling- or hoisting-chains so called ornamental chains
- F16G13/16—Hauling- or hoisting-chains so called ornamental chains with arrangements for holding electric cables, hoses, or the like
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a telescopic arm type drag chain structure, which comprises: drag chain and multiunit support from return means. The drag chain is annularly arranged on one side of the telescopic arm along the telescopic direction of the telescopic arm so as to form an upper-layer chain and a lower-layer chain which are arranged at an interval from top to bottom. The multiunit supports from return means and sets up along the direction of towing of tow chain interval in proper order, and each supports from return means's installation end and links to each other with flexible arm, and its relative support end stretches out and extends to the below of upper chain outwards to roll and support upper chain, and support from return means and deflect the setting along the direction of towing of tow chain, with the tow chain side deflection of tow chain of in-process atress towards the tow chain of towing, in order to dodge the tow chain, and after the tow chain tow the line automatic return to initial position. The telescopic arm type drag chain structure can ensure that the upper layer chain is supported, thereby avoiding the friction between the upper layer chain and the lower layer chain, prolonging the service life of the drag chain, reducing the risk of pipeline damage and solving the problems of the traditional telescopic arm type drag chain system.
Description
Technical Field
The invention relates to the field of engineering machinery with a telescopic boom, in particular to a telescopic boom type drag chain structure.
Background
At present, the drag chain structure of the telescopic arm is not supported generally by the upper layer drag chain, mainly depends on the rigidity of the drag chain, and the front end of the upper layer drag chain is provided with a pipe which supports the drag chain by the rigidity of the pipe, or uses a metal drag chain with higher rigidity to replace a plastic drag chain. Above various measures all do not thoroughly solve flexible arm at flexible in-process, and the upper tow chain is because the dead weight is flagging, and upper and lower layer tow chain looks mutual friction causes the risk of tow chain wearing and tearing, pipeline destruction, especially in the longer condition of long cantilever crane tow chain. At present, another technology is that the front end of an upper layer drag chain adopts a metal sleeve, the metal sleeve synchronously extends and retracts along with the telescopic drag chain of the arm support in the motion process, and the risks are solved to a certain extent.
Disclosure of Invention
The invention provides a telescopic arm type tow chain structure, which aims to solve the technical problems that the mutual friction of upper and lower layers of tow chains of the conventional telescopic arm frame causes the risks of tow chain abrasion and pipeline damage, the integral weight of the telescopic arm frame is increased, and the manufacturing cost is high.
The technical scheme adopted by the invention is as follows:
a telescopic boom tow chain structure comprising: the drag chain and the multiple groups of supporting self-returning devices; the drag chain is annularly arranged on one side of the telescopic arm along the telescopic direction of the telescopic arm so as to form an upper layer chain and a lower layer chain which are oppositely arranged at intervals up and down; the multiunit supports from return means and sets up along the direction of towing of tow chain interval in proper order, and each supports from return means's installation end and links to each other with flexible arm, and its relative support end stretches out and extends to the below of upper chain outwards to roll and support upper chain, and support from return means and deflect the setting along the direction of towing of tow chain, with the tow chain side deflection of tow chain of in-process atress towards the tow chain of towing, in order to dodge the tow chain, and after the tow chain tow the line automatic return to initial position.
Furthermore, the telescopic arm comprises a mounting arm and an extending arm which is sequentially nested and mounted in the mounting arm; the multiple groups of supporting self-returning devices are sequentially arranged at intervals along the length direction of the mounting arm, and the mounting end of each supporting self-returning device is fixed with the outer wall surface of the mounting arm.
Furthermore, the supporting self-returning device comprises a connecting seat fixed with the mounting arm, a swinging arm rotatably arranged on the connecting seat and deflected towards the dragging direction of the drag chain, a rotating wheel for rolling and supporting the upper-layer chain, and a return spring for automatically returning the deflected swinging arm; the rotating wheel is arranged on the swing arm; the return spring is connected between the connecting seat and the swing arm.
Furthermore, the connecting seat comprises a mounting plate detachably fixed with the outer wall surface of the mounting arm, a support plate vertically supported on the mounting plate, and a mounting shaft connected to the mounting plate in parallel; the swing arm is rotatably arranged on the excircle of the mounting shaft; the return spring is a telescopic spring which is arranged in a telescopic mode along the length direction, and the two ends of the telescopic spring are respectively connected with the supporting plate and the swinging arm.
Furthermore, the connecting seat comprises a mounting plate detachably fixed with the outer wall surface of the mounting arm, two support plates arranged at intervals oppositely and vertically connected with the mounting plate, and a mounting shaft with two ends respectively arranged on the two support plates; the swing arm is rotatably arranged on the excircle of the mounting shaft; the return spring is the torsional spring, and the torsional spring is installed on the excircle of installation axle, and the first end elasticity top of torsional spring is supported the mounting panel spacing, and its relative second end elasticity supports and leans on the swing arm.
Furthermore, the swing arm is L-shaped, the end part of the long shaft section with longer length is rotatably arranged on the excircle of the mounting shaft, and the top end of the short shaft section with length smaller than that of the long shaft section is provided with a rotating wheel; two ends of the extension spring are respectively connected with the support plate and the long shaft section; the second end of the torsion spring is elastically abutted against the long shaft section.
Furthermore, the rotating wheel comprises a mounting column fixed with the swing arm, a rotating wheel body rotatably arranged at the top end of the mounting column, and a plurality of rolling shafts for rolling and supporting the upper-layer chain; the plurality of rolling shafts are arranged on the rotating wheel body at intervals, and each rolling shaft is rotatably arranged to roll and support the upper-layer chain.
Furthermore, the rotating wheel body comprises a hollow disc-shaped rotating wheel body with an opening at the upper end and a central column vertically supported at the center of the rotating wheel body; two ends of each rolling shaft are respectively rotatably supported on the rotating wheel body and the central column.
Furthermore, a plurality of rollers are radially distributed along the radial direction of the runner body.
Furthermore, the outside of the runner hub is coated with an elastic wrapping.
The invention has the following beneficial effects:
when the telescopic arm type drag chain structure works, when the drag chain is not dragged, the multiple groups of supporting self-returning devices support the upper-layer chain in a matched action manner to prevent the upper-layer chain from contacting the lower-layer chain after falling, so that the upper-layer chain and the lower-layer chain rub with each other in the dragging process of the drag chain, and meanwhile, the supporting self-returning devices can deflect left and right along the dragging direction of the drag chain and can automatically return to the initial position after the drag chain passes; when the telescopic arm extends out, the drag chain is driven to move forwards, the drag chain continues to move forwards after the drag chain is contacted with the self-return support device, the self-return support device deflects towards the dragging side of the drag chain under the action of the pushing force of the drag chain, so that the drag chain is avoided to move forwards continuously, and when the drag chain is separated from the self-return support device, the self-return support device automatically returns to the initial position through the self-return function; when the telescopic arm retracts, the drag chain is contacted with the supporting self-returning device, the supporting self-returning device also deflects towards the dragged side of the drag chain, the specific moving process is similar to the action when the telescopic arm extends, and only the deflection direction is opposite, so that no matter the telescopic arm retracts or extends, the telescopic arm type drag chain structure can ensure that an upper layer chain is supported, the friction between the upper layer chain and a lower layer chain is avoided, the service life of the drag chain is prolonged, the risk of pipeline damage is reduced, the problem of the friction between the upper layer chain and the lower layer chain of the drag chain in the existing telescopic arm type drag chain system is solved, and the telescopic arm frame with large telescopic stroke is particularly superior; the telescopic arm type drag chain structure has the advantages of simple overall structure, light weight and low manufacturing cost.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a telescopic boom in a fully retracted state;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is a schematic view showing a state of an extending process of the telescopic arm;
FIG. 4 is a front view of the self-return device of FIG. 1;
FIG. 5 is a schematic left side view of the structure of FIG. 4;
FIG. 6 is a schematic top view of the structure of FIG. 5;
fig. 7 is a schematic view of another embodiment of the self-return device of fig. 1.
Description of the figures
1. A drag chain; 11. an upper layer chain; 12. a lower layer chain; 2. a support self-return device; 21. a connecting seat; 211. mounting a plate; 212. a support plate; 213. installing a shaft; 22. a swing arm; 23. a rotating wheel; 231. mounting a column; 232. a runner hub; 233. a roller; 24. a return spring; 3. a telescopic arm; 31. mounting an arm; 32. an extending arm.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
Referring to fig. 1 to 3, a preferred embodiment of the present invention provides a telescopic boom type tow chain structure, including: a drag chain 1 and a plurality of groups of supporting self-returning devices 2. The drag chain 1 is annularly arranged on one side of the telescopic arm 3 along the telescopic direction of the telescopic arm 3 to form an upper chain 11 and a lower chain 12 which are arranged at an upper interval and a lower interval. The multiunit supports from return means 2 and sets up along the tow line direction of tow chain 1 at interval in proper order, and each supports from return means 2's installation end and flexible arm 3 and link to each other, its relative support end stretches out and extends to the below of upper chain 11 outwards, support upper chain 11 with rolling, and support from return means 2 along the tow line direction deflection setting of tow chain 1, with at tow chain 1 tow line in-process atress towards the side deflection of towing of tow chain 1, in order to dodge tow chain 1, and after tow chain 1 tow line process, automatic return to initial position.
When the telescopic arm type drag chain structure works, when the drag chain 1 is not dragged, as shown in fig. 1 and fig. 2, a plurality of groups of supporting self-returning devices 2 support the upper-layer chain 11 in a matching way to prevent the upper-layer chain 11 from contacting the lower-layer chain 12 after falling down, so that the upper-layer chain 11 and the lower-layer chain 12 rub with each other in the dragging process of the drag chain 1, and meanwhile, the supporting self-returning devices 2 can deflect left and right along the dragging direction of the drag chain 1 and can automatically return to the initial position after the drag chain 1 passes; as shown in fig. 3, when the telescopic arm 3 extends out, the drag chain 1 is driven to move forward, after the drag chain 1 contacts the self-returning support device 2, the drag chain 1 continues to move forward, under the action of the pushing force of the drag chain 1, the self-returning support device 2 deflects towards the dragging side of the drag chain 1, so that the drag chain 1 is avoided from moving forward, and when the drag chain 1 is separated from the self-returning support device 2, the self-returning support device 2 automatically returns to the initial position through the self-returning function; when the telescopic arm 3 retracts, the drag chain 1 contacts the support self-return device 2, the support self-return device also deflects towards the dragged side of the drag chain 1, the specific movement process is similar to the movement when the telescopic arm 3 extends, and the deflection directions are opposite, so that no matter the telescopic arm 3 retracts or extends, the telescopic arm type drag chain structure can ensure that the upper-layer chain 11 is supported, the friction between the upper-layer chain 11 and the lower-layer chain 12 is avoided, the service life of the drag chain is prolonged, the risk of pipeline damage is reduced, the problem of the friction between the upper layer and the lower layer of the drag chain in the conventional telescopic arm type drag chain system is solved, and the telescopic arm frame with large telescopic stroke is particularly advantageous; the telescopic arm type drag chain structure has the advantages of simple overall structure, light weight and low manufacturing cost.
Alternatively, as shown in fig. 1 and 3, the telescopic arm 3 includes a mounting arm 31, and an extending arm 32 which is nested in the mounting arm 31. The multiple sets of supporting self-returning devices 2 are sequentially arranged at intervals along the length direction of the mounting arm 31, and the mounting end of each supporting self-returning device 2 is fixed to the outer wall surface of the mounting arm 31. The multiple groups of supporting self-returning devices 2 are sequentially arranged at intervals along the length direction of the mounting arm 31, so that the drag chain 1 is effectively ensured not to rub with the lower-layer chain 12 in a dragging process.
Alternatively, as shown in fig. 4 and 5, the self-returning device 2 comprises a connecting base 21 fixed with the mounting arm 31, a swing arm 22 rotatably mounted on the connecting base 21 to deflect in the towing direction of the drag chain 1, a runner 23 for rolling and supporting the upper chain 11, and a return spring 24 for automatically returning the deflected swing arm 22. The runner 23 is mounted on the swing arm 22. The return spring 24 is connected between the connecting seat 21 and the swing arm 22. During operation, drive tow chain 1 forward motion when extending arm 32, tow chain 1 continues forward after the tow chain 1 contacts the runner 23 that supports from return means 2, under tow chain 1 driving force effect, support from return means 2's swing arm 22 towards tow chain 1 and drag the side deflection, thereby it makes tow chain 1 continue to move ahead to dodge tow chain 1, when tow chain 1 and the runner 23 that supports from return means 2 break away from the contact, support from return means 2 and return to initial position through its return spring 24 is automatic.
In the first alternative embodiment, as shown in fig. 5, the connecting base 21 includes a mounting plate 211 detachably fixed to the outer wall surface of the mounting arm 31, a support plate 212 vertically supported on the mounting plate 211, and a mounting shaft 213 connected to the mounting plate 211 in parallel. The swing arm 22 is rotatably mounted on the outer circle of the mounting shaft 213. The return spring 24 is a telescopic spring that is telescopically arranged in the longitudinal direction, and both ends of the telescopic spring are respectively connected with the support plate 212 and the swing arm 22. In operation, when the swing arm 22 is not swung and is located right in front of the connecting seat 21, the stroke of the telescopic spring is shortest, so that when the swing arm 22 is deflected, the support self-return device 2 can automatically return to the initial support position by means of the tension of the telescopic spring. In this embodiment, the self-returning device 2 is supported by a simple structure and a simple self-returning principle, so that the manufacturing difficulty and the manufacturing cost are effectively reduced.
In the second alternative embodiment, as shown in fig. 7, the connection seat 21 includes a mounting plate 211 detachably fixed to the outer wall surface of the mounting arm 31, two support plates 212 disposed at an interval and vertically connected to the mounting plate 211, and a mounting shaft 213 having two ends respectively mounted on the two support plates 212. The swing arm 22 is rotatably mounted on the outer circle of the mounting shaft 213. The return spring 24 is a torsion spring, which is installed on the outer circle of the mounting shaft 213, and the first end of the torsion spring elastically abuts against the mounting plate 211 for limitation, and the second end opposite to the first end elastically abuts against the swing arm 22. In operation, when the swing arm 22 is not swung and located right in front of the connecting seat 21, the torsion of the torsion spring is minimized, so that when the swing arm 22 is deflected, the support can be automatically returned to the initial supporting position from the returning device 2 by the torsion of the torsion spring. In this embodiment, the self-returning device 2 is supported by a simple structure and a simple self-returning principle, so that the manufacturing difficulty and the manufacturing cost are effectively reduced.
In this alternative, as shown in fig. 5 and 7, the swing arm 22 is L-shaped, the end of the long shaft section having a longer length is rotatably mounted on the outer circumference of the mounting shaft 213, and the top end of the short shaft section having a shorter length than the long shaft section is provided with the runner 23. The two ends of the extension spring are respectively connected with the support plate 212 and the long shaft section. The second end of the torsion spring is elastically abutted against the long shaft section. The oscillating arm 22 is simple in construction and easy to manufacture.
Alternatively, as shown in fig. 5 and 6, the runner 23 includes a mounting post 231 fixed to the swing arm 22, a runner body 232 rotatably mounted on a top end of the mounting post 231, and a plurality of rollers 233 for rolling and supporting the upper chain 11. A plurality of rollers 233 are mounted on the runner hub 232 at intervals, and each roller 233 is rotatably disposed to roll and support the upper chain 11. In the alternative, the rotating wheel 23 has a simple structure and is easy to prepare; the runner body 232 is rotatably arranged at the top end of the mounting column 231, so that the friction between the upper-layer chain 11 and the runner 23 is reduced, and the drag chain 1 moves smoothly; similarly, the upper end surface of the self-return support device 2 is provided with a roller 233, and the drag chain 1 and the self-return support device 2 are in rolling friction when moving relatively, so that friction force is reduced, and the drag chain 1 moves smoothly.
In this alternative, as shown in fig. 5 and 6, the rotating wheel body 232 includes a hollow disc-shaped rotating wheel body with an open upper end, and a central column vertically supported at the center of the rotating wheel body. Both ends of each roller 233 are rotatably supported on the wheel body and the center post respectively.
In the preferred embodiment, as shown in fig. 6, the plurality of rollers 233 are radially arranged along the radial direction of the runner body, so that the runner 23 can uniformly roll and support the upper chain 11 during the rotation process, thereby reducing the friction between the two and enabling the drag chain 1 to smoothly move.
In the preferred embodiment, as shown in fig. 6, an elastic wrapper is wrapped around the rotating wheel body 232 to prevent the drag chain 1 from being damaged; in a specific embodiment of the preferred embodiment, the sheath is a rubber sheath formed from rubber.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a telescopic boom type tow chain structure which characterized in that includes: a drag chain (1) and a plurality of groups of supporting self-returning devices (2);
the drag chain (1) is annularly arranged on one side of the telescopic arm (3) along the telescopic direction of the telescopic arm (3) to form an upper-layer chain (11) and a lower-layer chain (12) which are oppositely arranged at intervals up and down;
the multiunit support from return means (2) edge tow line direction of tow chain (1) sets up at interval in proper order, and each support from the installation end of return means (2) with flexible arm (3) link to each other, its relative support end stretches out and extends to the below of upper chain (11) is supported in order to roll upper chain (11), and support from return means (2) edge the tow line direction deflection setting of tow chain (1), in order tow chain (1) tow the in-process atress court the side deflection of towing of tow chain (1), in order to dodge tow chain (1), and tow chain (1) tow the line and reply to initial position after the process automatically.
2. The telescopic-arm tow chain structure of claim 1,
the telescopic arm (3) comprises a mounting arm (31) and an extending arm (32) which is sequentially nested and mounted in the mounting arm (31);
the multiple groups of the supporting self-returning devices (2) are sequentially arranged at intervals along the length direction of the mounting arm (31), and the mounting end of each supporting self-returning device (2) is fixed with the outer wall surface of the mounting arm (31).
3. The telescopic-arm tow chain structure of claim 2,
the supporting self-returning device (2) comprises a connecting seat (21) fixed with the mounting arm (31), a swinging arm (22) rotatably arranged on the connecting seat (21) and deflected towards the dragging direction of the drag chain (1), a rotating wheel (23) for rolling and supporting the upper layer chain (11), and a return spring (24) for automatically returning the deflected swinging arm (22);
the rotating wheel (23) is arranged on the swing arm (22);
the return spring (24) is connected between the connecting seat (21) and the swing arm (22).
4. The telescopic-arm tow chain structure of claim 3,
the connecting seat (21) comprises a mounting plate (211) detachably fixed with the outer wall surface of the mounting arm (31), a support plate (212) vertically supported on the mounting plate (211), and a mounting shaft (213) connected to the mounting plate (211) in parallel;
the swing arm (22) is rotatably arranged on the outer circle of the mounting shaft (213);
the return spring (24) is a telescopic spring which is arranged in a telescopic mode along the length direction, and two ends of the telescopic spring are respectively connected with the support plate (212) and the swing arm (22).
5. The telescopic-arm tow chain structure of claim 3,
the connecting seat (21) comprises a mounting plate (211) detachably fixed with the outer wall surface of the mounting arm (31), two support plates (212) oppositely arranged at intervals and vertically connected with the mounting plate (211), and a mounting shaft (213) with two ends respectively arranged on the two support plates (212);
the swing arm (22) is rotatably arranged on the outer circle of the mounting shaft (213);
return spring (24) are the torsional spring, the torsional spring install in on the excircle of installation axle (213), just the first end elasticity top of torsional spring is supported mounting panel (211) is spacing, and its relative second end elasticity supports and supports swing arm (22).
6. The telescopic-arm tow chain structure of any one of claims 4 or 5,
the swing arm (22) is L-shaped, the end part of a long shaft section with longer length is rotatably arranged on the excircle of the mounting shaft (213), and the top end of a short shaft section with shorter length than the long shaft section is provided with the rotating wheel (23);
the two ends of the extension spring are respectively connected with the support plate (212) and the long shaft section;
the second end of the torsion spring is elastically abutted against the long shaft section.
7. The telescopic-arm tow chain structure of claim 3,
the rotating wheel (23) comprises a mounting column (231) fixed with the swing arm (22), a rotating wheel body (232) rotatably arranged at the top end of the mounting column (231), and a plurality of rolling shafts (233) for rolling and supporting the upper-layer chain (11);
the plurality of rolling shafts (233) are arranged on the rotating wheel body (232) at intervals, and each rolling shaft (233) is rotatably arranged to roll and support the upper layer chain (11).
8. The telescopic-arm tow chain structure of claim 7,
the rotating wheel body (232) comprises a hollow disc-shaped rotating wheel body with an opening at the upper end and a central column vertically supported at the center of the rotating wheel body;
two ends of each rolling shaft (233) are respectively and rotatably supported on the rotating wheel body and the central column.
9. The telescopic-arm tow chain structure of claim 8,
the rolling shafts (233) are radially distributed along the radial direction of the runner body.
10. The telescopic-arm tow chain structure of claim 7,
the rotating wheel body (232) is coated with an elastic wrapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210397438.2A CN114877023B (en) | 2022-04-15 | 2022-04-15 | Telescopic arm type drag chain structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210397438.2A CN114877023B (en) | 2022-04-15 | 2022-04-15 | Telescopic arm type drag chain structure |
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| CN114877023A true CN114877023A (en) | 2022-08-09 |
| CN114877023B CN114877023B (en) | 2023-05-02 |
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| CN212717819U (en) * | 2020-06-30 | 2021-03-16 | 乐清市海宇智能科技有限公司 | Drag chain bearing structure |
| CN214036705U (en) * | 2020-11-13 | 2021-08-24 | 合肥欣奕华智能机器有限公司 | Drag chain operation supporting structure and drag chain device |
| CN112648340A (en) * | 2020-12-31 | 2021-04-13 | 徐州亚恒工程机械科技有限公司 | Telescopic high-altitude operation vehicle drag chain system |
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| CN114877023B (en) | 2023-05-02 |
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