CN215711306U - Guide wheel frame, auxiliary arm and crane - Google Patents

Abstract

The utility model belongs to the field of construction machinery, and particularly relates to a guide wheel frame, an auxiliary arm and a crane. The guide wheel frame comprises a support and an inclined strut rod piece, the support comprises a wheel mounting portion and a supporting leg rod piece extending downwards from the wheel mounting portion, and the rod length of the supporting leg rod piece can be adjusted. The length of the diagonal bracing member bar can be adjusted and the bottom of the bracket is pivotally connected. The guide wheel frame provided by the utility model can be suitable for auxiliary arms of different types or different position sections arranged on the same auxiliary arm, and has stronger universality and wider application range. The universal guide wheel frame has strong universality, so that the structure of the auxiliary arm can be enriched correspondingly, and the structural limitation of the guide wheel frame is not considered too much.

Description

Guide wheel frame, auxiliary arm and crane

Technical Field

The utility model relates to the technical field of construction machinery, in particular to a guide wheel frame, an auxiliary arm and a crane.

Background

In an automobile crane or a crawler crane, a boom is an important component for hoisting a heavy object. The existing arm support comprises a main arm and an auxiliary arm, wherein a guide wheel frame is arranged on the auxiliary arm, and a steel wire rope is wound on the guide wheel frame in a penetrating manner. The guide wheel frame ensures the safe distance between the steel wire rope and the auxiliary arm, and prevents the steel wire rope from contacting the auxiliary arm to cause abrasion during the operation of the crane. However, the existing guide wheel frame has a single structure, and a specific guide wheel frame can only be matched with a specific auxiliary arm, so that the application range is too single.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects or shortcomings in the prior art, the utility model provides the guide wheel frame, the auxiliary arm and the crane, wherein the guide wheel frame is high in universality and wide in application range.

To achieve the above object, the present invention provides a wheel carrier, comprising:

the support comprises a wheel mounting part and a support leg rod part extending downwards from the wheel mounting part, and the rod length of the support leg rod part can be adjusted; and

the pole length of bracing member, bracing member can adjust and with the bottom pivotal connection of support.

Optionally, the leg bar and the sprag bar are telescopic sleeve assemblies or piston cylinder assemblies.

Optionally, the leg bar and the diagonal bar each include a fixing bar, a telescopic bar, and a locking and positioning structure, the locking and positioning structure includes a pin hole row provided on one of the fixing bar and the telescopic bar, and an alignment pin hole provided on the other and a pin passing through the alignment pin hole, the pin hole row includes a plurality of pin holes arranged in a bar length direction.

Optionally, the two sides of the support are respectively provided with a leg bar, and the diagonal bar is arranged between the two leg bars in the middle.

Optionally, the bottom of the wheel mounting part extends downwards to form a connecting lug plate, and the inclined strut rod is pivotally connected with the connecting lug plate.

Optionally, the wheel mounting portion includes two vertical mounting plates arranged at a transverse interval, pulley pivot mounting holes are formed in the vertical mounting plates, and a pulley accommodating space is clamped between the two vertical mounting plates.

Optionally, the vertical mounting plate is provided with guide wheel pivot mounting holes, and the guide wheel pivot mounting holes are arranged above the pulley pivot mounting holes at intervals.

The utility model provides a secondary arm, and the guide wheel frame is mounted on the secondary arm.

Optionally, a pulley, a guide wheel positioned above the pulley, and a rope positioned between the guide wheel and the pulley are arranged on the wheel mounting part of the guide wheel frame, and the distance between the rope and the auxiliary arm is not less than 150 mm.

A third aspect of the utility model provides a crane comprising a jib as described above.

In the guide wheel frame provided by the utility model, the pivoting angle of the inclined strut rod relative to the supporting leg rod is adjusted so as to be suitable for different web member intervals on different auxiliary arms, and certainly, the guide wheel frame can also be used for a plurality of position sections with different web member intervals on the same auxiliary arm, and the safety distance between a steel wire rope penetrating through the guide wheel frame and the auxiliary arm is controlled by adjusting the rod length of the inclined strut rod and the supporting leg rod. In conclusion, the guide wheel frame can be adapted to web members with different distances, and is stronger in universality and wider in application range.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of a wheel carriage according to an embodiment of the present invention;

fig. 2 is a left side view of fig. 1.

Description of reference numerals: 10. a support; 20. a diagonal brace member; 30. a pulley; 40. a guide wheel; 11. a wheel mounting portion; 12. a leg bar; 111. connecting the ear plates; 112. a vertical mounting plate; 113. a pulley accommodating space; a. fixing the rod; b. telescopic rod

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the utility model, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In embodiments of the utility model, where the context requires otherwise, the use of directional terms such as "upper, lower, top and bottom" is generally intended in the orientation shown in the drawings or the positional relationship of the various components in a vertical, vertical or gravitational orientation.

The utility model will be described in detail below with reference to exemplary embodiments and with reference to the accompanying drawings.

The first exemplary embodiment of the present invention provides a wheel frame including a yoke 10 and a sprag bar 20. The stand 10 includes a wheel mounting portion 11 and a leg lever 12 protruding downward from the wheel mounting portion 11, and a lever length of the leg lever 12 is adjustable. The pole length of the sprag pole 20 can be adjusted and pivotally connected to the bottom of the bracket 10.

As shown in fig. 1 and 2, the wheel frame is mainly composed of a frame 10 and an inclined strut member 20, wherein the frame 10 includes a wheel mounting portion 11 and a leg strut member 12 arranged in sequence from top to bottom, the inclined strut member 20 is connected to the bottom of the frame 10, and the leg strut member 12 and the bottom end of the inclined strut member 20 are respectively connected to two web members on the secondary arm, so as to connect the whole wheel frame with the secondary arm. In particular, the diagonal strut bars 20 are pivotally connected to the support frame 10, both the diagonal strut bars 20 and the leg bars 12 being able to adjust the bar length. Therefore, the angle of the inclined strut member 20 pivoting relative to the leg member 12 is adjusted to adapt to different web member pitches on different auxiliary arms, and of course, the angle can also be used for a plurality of position sections with different web member pitches on the same auxiliary arm, and the length of the inclined strut member 20 and the leg member 12 is adjusted to control the safety distance between the steel wire rope threaded on the guide wheel frame and the auxiliary arm. In conclusion, the guide wheel frame can be adapted to web members with different distances, and is stronger in universality and wider in application range.

In order to achieve adjustable rod lengths of the leg rod 12 and the diagonal rod 20, further, the leg rod 12 and the diagonal rod 20 are telescopic sleeve assemblies or piston cylinder assemblies. In this embodiment, the telescopic sleeve assembly and the piston cylinder assembly are both components having the function of adjusting the length in a telescopic manner. In addition, leg bar 12 and sprag bar 20 may both be telescopic sleeve assemblies, or both piston cylinder assemblies, or a combination of telescopic sleeve assemblies and piston cylinder assemblies.

Further, because the telescopic sleeve assembly has a simple structure and low cost, in the embodiment, the leg rod 12 and the diagonal rod 20 are both telescopic sleeve assemblies. Specifically, the leg bar 12 and the diagonal bar 20 each include a fixed bar a, a telescopic bar b that is capable of telescoping relative to the fixed bar a, and a locking and positioning structure. In the illustrated embodiment, the fixing rod a is a sleeve, and the telescopic rod b is disposed in the fixing rod a and can slide relative to the fixing rod a, so as to adjust the rod length. It can be understood that the telescopic rod b is a sleeve and is sleeved on the fixing rod a, and the rod length can also be adjusted, in other words, one of the fixing rod a and the telescopic rod b can be a sleeve, and is not particularly limited.

In addition, the locking and positioning structure is used for controlling the extending distance of the telescopic rod b relative to the fixed rod a. For example, the locking and positioning structure may be a threaded connection structure, when the fixing rod a is a sleeve, an inner circumferential wall of the fixing rod a is provided with an internal thread, and an outer circumferential wall of the telescopic rod b is provided with an external thread, so as to adjust the rod length by screwing in or screwing out the telescopic rod b. The locking location structure can also be a tightening ring with an adjustable caliber, the tightening ring is arranged at the joint of the fixed rod a and the telescopic rod b, and the telescopic rod b is fixed by adjusting the caliber of the tightening ring after the telescopic rod b is pulled out by a proper length. Therefore, there are various structures having a locking and positioning function capable of controlling the extending distance of the telescopic rod b relative to the fixing rod a, which are not illustrated in detail herein.

In order to secure the structural strength of the entire wheel frame, in an embodiment of the present invention, the locking and positioning structure includes a pin hole row provided on one of the fixed bar a and the telescopic bar b, and an alignment pin hole provided on the other and a plug pin passing through the alignment pin hole, the pin hole row including a plurality of pin holes arranged in the bar length direction. In other words, in the present embodiment, the leg rod 12 and the diagonal strut rod 20 adopt the pin and pin hole cooperation to adjust the rod length, and the structure is simple and reliable.

As shown in fig. 1 and 2, in the illustrated embodiment, the fixing rod a is a sleeve and is provided with only 1 alignment pin hole, and the telescopic rod b is provided with a pin hole row. Of course, the fixing rod a may also be provided with a pin hole row, and the telescopic rod b may be provided with an alignment pin hole, which is not limited specifically.

In the embodiment of the present invention, the support frame 10 is provided with leg links 12 on both sides thereof, respectively, and the diagonal support link 20 is centrally disposed between the two leg links 12.

As shown in fig. 2, in particular, the leg rod 12 and the diagonal strut rod 20 are connected to the web members of the secondary arm and have a triangular shape, so that the structure is stable and reliable. In the present embodiment, the bottom ends of the two leg links 12 and the bottom ends of the diagonal brace links 20 are connected to the web member of the sub-boom to form a triangle, and the position of the connection point of the bottom ends is not easily shifted, so that reliable support can be achieved.

In the embodiment of the present invention, the wheel mounting portion 11 has a connecting lug plate 111 extending downward from the bottom thereof, and the sprag rod 20 is pivotally connected to the connecting lug plate 111.

As shown in fig. 1 and 2, in the present embodiment, the leg link 12 is fixedly connected to the wheel mounting portion 11, for example, by welding, and the sprag link 20 is pivotally connected to the connection lug 111. I.e., leg links 12 can only adjust the rod length, diagonal strut links 20 can not only be pivotally deployed relative to leg links 12, but also adjust the rod length. The connecting ear plate 111 is connected with the diagonal brace rod 20, so that the installation is convenient for workers. In the illustrated embodiment, the connecting ear plate 111 is in a U shape with an opening facing downward, and the top end of the diagonal brace member 20 is inserted into the opening and passes through the pin shaft for connection.

In the embodiment of the present invention, the wheel mounting portion 11 includes two vertical mounting plates 112 arranged at a distance in the transverse direction, the vertical mounting plates 112 are provided with pulley pivot mounting holes, and a pulley accommodating space 113 is interposed between the two vertical mounting plates.

As shown in fig. 1 and 2, specifically, the pulley accommodating space 113 is used for installing the pulley 30, a pin shaft is inserted into the pulley pivot installing hole to fix the pulley 30 in the pulley accommodating space 113, the pulley 30 can rotate, and the wire rope is inserted and wound on the pulley 30.

Further, the vertical mounting plate 112 has a guide wheel pivot mounting hole, and the guide wheel pivot mounting hole is arranged above the pulley pivot mounting hole at an interval.

Specifically, the guide wheel 40 is also installed in a space sandwiched between the two vertical mounting plates 112, a pin shaft is inserted into the pivot mounting hole of the guide wheel to fix the guide wheel 40 above the pulley 30, and the steel wire rope wound around the pulley 30 is located between the pulley 30 and the guide wheel 40.

In a second exemplary embodiment of the present invention, a sub-arm is provided, on which the above-described wheel carrier is mounted. Since the auxiliary arm adopts all technical solutions of all the embodiments, all the beneficial effects brought by the wheel frame in the embodiments are achieved, and no further description is given here.

Furthermore, a pulley 30, a guide wheel 40 positioned above the pulley 30 and a rope positioned between the guide wheel 40 and the pulley 30 are arranged on the wheel mounting part 11 of the guide wheel frame, and the distance between the rope and the auxiliary arm is not less than 150 mm.

Specifically, in the guide wheel frame to which the sub-arm is mounted, the leg bar 12 and the diagonal bar 20 of the guide wheel frame are connected to the sub-arm, and by adjusting the bar lengths of the leg bar 12 and the diagonal bar 20, it is ensured that the distance between the rope inserted between the pulley 30 and the guide wheel 40 and the sub-arm is not less than 150mm, in other words, the minimum safety distance between the rope and the sub-arm is 150 mm.

In a third exemplary embodiment of the utility model, a crane is provided, which comprises an auxiliary jib as described above. Therefore, the auxiliary arm has the beneficial effects brought by the auxiliary arm, and the description is omitted here.

In conclusion, the guide wheel frame provided by the utility model can be suitable for auxiliary arms of different types or different position sections arranged on the same auxiliary arm, and has stronger universality and wider application range. The universal guide wheel frame has strong universality, so that the structure of the auxiliary arm can be enriched correspondingly, and the structural limitation of the guide wheel frame is not considered too much.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A wheel frame, comprising:

the support (10) comprises a wheel mounting part (11) and a support leg rod part (12) extending downwards from the wheel mounting part (11), and the rod length of the support leg rod part (12) can be adjusted; and

the diagonal bracing member (20), the pole length of diagonal bracing member (20) can be adjusted and with the bottom pivotal connection of support (10).

2. The wheel frame of claim 1, wherein the leg bar (12) and the sprag bar (20) are telescopic sleeve assemblies or piston cylinder assemblies.

3. The wheel frame as claimed in claim 2, wherein the leg bar (12) and the diagonal bar (20) each comprise a fixing bar (a), a telescopic bar (b), and a locking positioning structure comprising a pin hole row provided on one of the fixing bar (a) and the telescopic bar (b) and an alignment pin hole provided on the other and a pin passing through the alignment pin hole, the pin hole row comprising a plurality of pin holes arranged in a bar length direction.

4. Wheel carrier according to any of claims 1-3, characterized in that the leg bars (12) are arranged on both sides of the carrier (10), respectively, and that the diagonal bar (20) is arranged centrally between the two leg bars (12).

5. The wheel carrier according to claim 1, characterized in that the bottom of the wheel mounting part (11) extends downwards with a connecting ear plate (111), and the diagonal brace member (20) is pivotally connected with the connecting ear plate (111).

6. The wheel carrier according to claim 1, characterized in that the wheel mounting part (11) comprises two vertical mounting plates (112) arranged at a transverse interval, pulley pivot mounting holes are arranged on the vertical mounting plates (112), and a pulley accommodating space (113) is clamped between the two vertical mounting plates.

7. The wheel carriage as claimed in claim 6, wherein the vertical mounting plate (112) is provided with wheel pivot mounting holes spaced above the pulley pivot mounting holes.

8. An auxiliary arm, characterized in that the auxiliary arm is mounted with a wheel carrier according to any of claims 1-7.

9. The secondary arm according to claim 8, wherein a pulley (30), a guide wheel (40) positioned above the pulley (30), and a rope positioned between the guide wheel (40) and the pulley (30) are arranged on the wheel mounting part (11) of the guide wheel frame, and the distance between the rope and the secondary arm is not less than 150 mm.

10. A crane, characterized in that the crane comprises a fly jib according to claim 8 or 9.

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