CN216997401U - Telescopic arm of crane special for pipe holding - Google Patents

Abstract

The utility model discloses a telescopic arm of a crane special for holding pipes, which comprises an outer holding pipe and an inner holding pipe, wherein the inner outer walls of the outer holding pipe and the inner holding pipe are respectively provided with a mounting plate base, the inner walls of the outer holding pipe and the inner holding pipe are respectively provided with an auxiliary sliding structure, the auxiliary sliding structure comprises two groups of sliding frames, a cross rod and a threaded cylinder, the cross rod is movably arranged between the two groups of sliding frames, the bottom end of the middle part of the cross rod is provided with the threaded cylinder, the middle part of the threaded cylinder is movably provided with a threaded rod, the two ends of the threaded rod are movably clamped and fixed with the inner wall of the holding pipe structure, through the arranged auxiliary sliding structure and the mounting plate structure, a user can reduce friction damage and ensure the telescopic arm to be stretched smoothly by adopting the rack-gear and threaded rod-threaded cylinder transmission mode when the inner holding pipe extends out of the outer holding pipe, the energy loss caused by friction is reduced, and the service life is prolonged.

Description

Telescopic arm of crane special for pipe holding

Technical Field

The utility model relates to the field of telescopic boom devices, in particular to a telescopic boom of a crane special for a pipe holding.

Background

In the telescopic arm of the crane, the arm head structure is an important component of a crane arm. In terms of the whole structure of the crane boom, the cylinder body and the boom tail are key parts which are stressed greatly in the working process of the crane boom and need strong structural strength to guarantee; compared with the cylinder body and the arm tail, the arm head structure part is relatively low in stress.

In chinese patent No. cn201020685291.x, a crane telescopic boom and a boom head structure thereof are introduced, wherein the boom head structure for the crane telescopic boom is simple in structure, low in mass, convenient to produce and capable of remarkably reducing the mass and production cost of the boom head structure on the basis of meeting the working strength of a crane boom. Another core of the present invention is to provide a crane telescopic boom including the above boom head structure, which meets the requirement of large-scale development of cranes, however, the skilled person in the art finds in practical operation: when the structure is used, the structure of the structure is the same as that of the existing structure, the inner holding pipe and the outer holding pipe are directly sleeved, and the inner holding pipe and the outer holding pipe are in direct contact, so that the inner wall of the inner holding pipe is abraded and damaged, and the structure is not beneficial to long-time use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the telescopic arm of the crane special for the holding pipe is provided, and through the arrangement of the auxiliary sliding structure and the mounting plate structure, when a user extends the inner holding pipe from the inner part of the outer holding pipe, the inner holding pipe is not in contact with the wall of the outer holding pipe through the matched auxiliary sliding structure, so that friction damage is reduced, the telescopic arm is ensured to be stretched smoothly, and energy loss caused by friction is reduced and the service life is prolonged by adopting a transmission mode of a rack-gear, a threaded rod and a threaded cylinder.

In order to solve the technical problems, the utility model provides the following technical scheme: embrace flexible arm of a tub special crane, embrace the pipe and embrace the pipe in with including outer, the inboard outer wall of embracing the pipe in and outside embracing the pipe all is provided with the mounting panel base, just the inner wall of embracing the pipe in and outside embracing the pipe all is provided with supplementary sliding structure, including two sets of smooth frames, horizontal pole and a screw thread section of thick bamboo in the supplementary sliding structure, it is two sets of the activity is provided with the horizontal pole between the smooth frame, the middle part bottom of horizontal pole is provided with a screw thread section of thick bamboo, the middle part activity of a screw thread section of thick bamboo is provided with the threaded rod, the both ends of threaded rod are established fixedly with the inner wall activity card of embracing the tubular structure.

As a preferable technical scheme of the utility model, each group of the sliding frames is of a hollow frame structure without a surface at the top end, and a rack is fixed on the inner side wall of each sliding frame.

As a preferable technical scheme of the utility model, the two sides of the cross rod are downwards provided with protruding structures, the inner part of each group of protruding structures is movably provided with a rotating column, the outer side of the rotating column is fixed with a gear, and the gear is meshed and fixed with the rack.

As a preferable technical scheme of the utility model, the mounting plate is fixed at the top end of the mounting plate base, positioning holes are formed in two ends of the mounting plate, and the positioning holes are matched with the threaded holes in size.

As a preferable technical scheme of the utility model, the positioning hole and the threaded hole are fixedly connected through a bolt.

As a preferred technical scheme of the utility model, the gear protrudes out of the protruding structures at two sides of the bottom end of the cross rod, and the exposed area of the gear is smaller than one half of the total area of the gear.

As a preferable technical scheme of the utility model, the top end of the cross rod is fixed with an anti-skid rubber mat.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. in the device, through the auxiliary sliding structure and the mounting plate structure, when a user can stretch out the inner holding pipe from the inner holding pipe, the inner holding pipe is in non-contact with the outer holding pipe wall through the auxiliary sliding structure, friction damage is reduced, stretching of the telescopic arm is guaranteed to be smooth, and energy loss caused by friction is reduced and service life is prolonged by adopting a transmission mode of a rack-gear and a threaded rod-threaded cylinder.

2. In this device, through setting up supplementary sliding structure and mounting panel structure, it is fixed to embrace to manage and embrace to connect through supplementary sliding structure and mounting panel between the pipe outward for embrace the pipe in when outwards stretching out, more stable, and when contracting, have the direction function, avoid appearing crooked phenomenon, reduce the error.

3. In the device, the auxiliary sliding structure and the mounting plate structure are simple in structure and low in cost, are suitable for most of lifting telescopic arms with holding pipes, and have high practicability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an inner pipe according to the present invention;

FIG. 3 is a schematic view of an auxiliary sliding structure according to the present invention;

fig. 4 is a schematic structural view of the gear of the present invention.

Wherein: 1. an outer holding pipe; 2. an inner holding pipe; 3. an auxiliary sliding structure; 31. a sliding frame; 32. a rack; 33. a cross bar; 331. a threaded hole; 332. rotating the column; 333. a gear; 34. a threaded barrel; 341. a threaded rod; 4. a mounting plate base; 41. mounting a plate; 42. and (7) positioning the holes.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental procedures in the following examples were carried out in a conventional manner unless otherwise specified, and materials, reagents and the like used in the following examples were commercially available unless otherwise specified.

Example (b):

as shown in fig. 1 to 4, the telescopic boom of the crane special for pipe embracing comprises an outer embracing pipe 1 and an inner embracing pipe 2, wherein the inner side outer walls of the outer embracing pipe 1 and the inner embracing pipe 2 are both provided with a mounting plate base 4, the inner walls of the outer embracing pipe 1 and the inner embracing pipe 2 are both provided with an auxiliary sliding structure 3, the auxiliary sliding structure 3 comprises two groups of sliding frames 31, a cross rod 33 and a threaded cylinder 34, the cross rod 33 is movably arranged between the two groups of sliding frames 31, the bottom end of the middle part of the cross rod 33 is provided with the threaded cylinder 34, the middle part of the threaded cylinder 34 is movably provided with a threaded rod 341, and two ends of the threaded rod 341 are movably clamped and fixed with the inner wall of the embracing pipe structure.

In other embodiments, each set of sliding frames 31 is a hollow frame structure with no top surface, and the inner side wall of the sliding frame 31 is fixed with a rack 32.

Through setting up supplementary sliding structure 3 and mounting panel 41 structure, it is fixed to embrace to manage 2 and embrace outward and connect through supplementary sliding structure 3 and mounting panel 41 between managing 1 for embrace pipe 2 when outwards stretching out in, more stable, and when retracting, have the direction function, avoid appearing crooked phenomenon, reduce the error.

In other embodiments, the two sides of the cross bar 33 are provided with downward protruding structures, and the inside of each protruding structure is movably provided with a rotating column 332, a gear 333 is fixed on the outer side of the rotating column 332, and the gear 333 is engaged with the rack 32.

Through the auxiliary sliding structure 3 and the mounting plate 41, when the inner holding tube 2 extends out of the outer holding tube 1, the user can avoid contact with the wall of the outer holding tube 1 through the auxiliary sliding structure 3, friction damage is reduced, and the telescopic arm is guaranteed to be telescopic and smooth, and energy loss caused by friction is reduced and service life is prolonged by adopting a transmission mode of the rack 32-the gear 333, the threaded rod 331-the threaded cylinder 34.

In other embodiments, the mounting plate 41 is fixed at the top end of the mounting plate base 4, the two ends of the mounting plate 41 are both provided with positioning holes 42, and the positioning holes 42 are matched with the threaded holes 331 in size.

In other embodiments, the positioning hole 42 and the threaded hole 331 are fixedly connected by bolts.

The fixing effect between the inner holding pipe 2 and the outer holding pipe 1 is improved.

In other embodiments, the gears 333 protrude from the protruding structures on both sides of the bottom end of the cross bar 33, and the exposed area of the gears 333 is less than half of the total area.

The gear 333 is in contact and meshed with the rack 32, so that energy loss and damage caused by friction between the inner holding pipe 2 and the outer holding pipe 1 are reduced during sliding, and the service life is prolonged.

In other embodiments, a non-slip rubber pad is fixed to the top end of the cross bar 33.

The effect of connecting and fixing the inner holding pipe 2 and the auxiliary sliding structure 3 is improved.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. Embrace flexible arm of pipe special crane embraces pipe (1) and interior tub (2), its characterized in that including embracing outward: embrace pipe (1) outward and the inboard outer wall of interior armful pipe (2) all is provided with mounting panel base (4), just embrace pipe (1) outward and the inner wall of interior armful pipe (2) all is provided with supplementary sliding structure (3), including two sets of sliding frame (31), horizontal pole (33) and screw thread section of thick bamboo (34) in supplementary sliding structure (3), it is two sets of the activity is provided with horizontal pole (33) between sliding frame (31), the middle part bottom of horizontal pole (33) is provided with screw thread section of thick bamboo (34), the middle part activity of screw thread section of thick bamboo (34) is provided with threaded rod (341), the both ends of threaded rod (341) are established fixedly with the inner wall activity card of embracing the tubular construction.

2. The telescopic boom of the pipe embracing special crane according to claim 1, wherein: each group of sliding frames (31) is of a hollow frame structure with a top end without a surface, and racks (32) are fixed on the inner side walls of the sliding frames (31).

3. The telescopic arm of the special pipe embracing crane according to claim 2, wherein: protruding structures are downwards arranged on two sides of the cross rod (33), each protruding structure is movably arranged inside a rotating column (332), a gear (333) is fixed to the outer side of each rotating column (332), and the gear (333) is meshed with the rack (32) and fixed.

4. The telescopic boom of the pipe embracing special crane according to claim 1, wherein: the top of mounting panel base (4) is fixed with mounting panel (41), locating hole (42) have all been seted up at the both ends of mounting panel (41), the size looks adaptation of locating hole (42) and screw hole (331).

5. The telescopic arm of the special pipe embracing crane according to claim 4, wherein: the positioning hole (42) and the threaded hole (331) are fixedly connected through a bolt.

6. The telescopic arm of the special pipe embracing crane according to claim 3, wherein: the gear (333) protrudes out of the protruding structures on the two sides of the bottom end of the cross rod (33), and the exposed area of the gear (333) is smaller than one half of the total area of the gear.

7. The telescopic boom of the pipe embracing special crane according to claim 1, wherein: the top end of the cross rod (33) is fixed with an anti-skid rubber mat.

Images