CN219601214U - Telescopic supporting structure and working machine - Google Patents

Abstract

The utility model relates to the technical field of supporting structures, and provides a telescopic supporting structure and a working machine. The telescopic support structure comprises telescopic arms and supporting legs; the telescopic arm comprises at least two sleeved arm sections; the supporting leg is vertically fixed with the telescopic arm; wherein, in the adjacent arm section of flexible arm, the inside wall that is located the arm section of outside is provided with first overlap joint spare, and the lateral wall that is located the arm section of inboard is provided with the second overlap joint spare corresponding with first overlap joint spare, and when the arm section that is located the inboard is in the state of stretching out, first overlap joint spare is located corresponding second overlap joint spare downside to with corresponding second overlap joint spare contact cooperation. According to the telescopic supporting structure and the working machine, the first lap joint piece and the second lap joint piece are matched with each other between the two adjacent arm sections, so that the pressure between the bottom plate of the arm section positioned on the inner side and the bottom plate of the arm section positioned on the outer side can be dispersed to the side wall position of the arm section, the problem of concentrated stress is effectively solved, and the supporting capacity is improved.

Description

Telescopic supporting structure and working machine

Technical Field

The utility model relates to the technical field of supporting structures, in particular to a telescopic supporting structure and a working machine.

Background

At present, the working machines such as concrete pump trucks and fire trucks all adopt telescopic support leg structures to support when carrying out in-situ operation, and the telescopic support leg structures mainly adopt X-type support leg structures or H-type support leg structures, and both include the telescopic boom that is provided with two section at least arm sections and set up the landing leg in telescopic boom tip, and wherein, one of them forms the slide of two sections adjacent arm sections of telescopic boom, and another slip sets up in this slide.

In the telescopic supporting leg structure in the prior art, when the telescopic arm stretches and the supporting leg positioned at the end part of the telescopic arm is vertically supported, the end part of the bottom plate of the arm section positioned at the inner side of the adjacent arm section is contacted with the bottom plate of the arm section positioned at the outer side, so that the stress is concentrated, the telescopic supporting leg structure is easy to damage when bearing larger pressure, the structural design of the operation machinery is greatly limited, and the performance of the whole equipment is influenced.

Disclosure of Invention

The utility model provides a telescopic supporting structure and an operation machine, which are used for solving the problem that the stress of a telescopic supporting leg structure is concentrated in the prior art.

The utility model provides a telescopic support structure, comprising:

the telescopic arm comprises at least two sleeved arm sections;

the support legs are vertically fixed with the telescopic arms;

the telescopic arm comprises an arm section, wherein the arm section is arranged on the outer side, a first lap joint piece is arranged on the inner side wall of the arm section, a second lap joint piece corresponding to the first lap joint piece is arranged on the inner side, and when the arm section is arranged on the inner side and is in an extending state, the first lap joint piece is arranged on the lower side of the corresponding second lap joint piece and is in contact fit with the corresponding second lap joint piece.

According to the telescopic support structure provided by the utility model, at least one of the first lap joint and the second lap joint extends along the length direction of the arm section.

According to the telescopic supporting structure provided by the utility model, the second lap joint extends along the length direction of the arm section, and the second lap joint is provided with the guide inclined plane.

According to the telescopic supporting structure provided by the utility model, the arm section comprises a top plate, a bottom plate and a pair of side plates, wherein the pair of side plates are fixedly arranged between the top plate and the bottom plate, the top plate, the bottom plate and the pair of side plates enclose an inner cavity, and the sides, facing away from each other, of the side plates respectively enclose lateral grooves with the top plate and the bottom plate.

According to the telescopic supporting structure provided by the utility model, the first lap joint piece is positioned in the inner cavity, and the second lap joint piece is positioned in the lateral groove.

According to the telescopic supporting structure provided by the utility model, the upper side of the second lap joint is in contact with the lower side of the top plate.

According to the telescopic supporting structure provided by the utility model, in the adjacent arm sections of the telescopic arm, the first lap joint pieces are respectively arranged on the inner side walls of the two opposite arm sections positioned on the outer side, and the second lap joint pieces are respectively arranged on the two sides of the arm section positioned on the inner side.

According to the telescopic supporting structure provided by the utility model, the telescopic arm comprises a first end arm section, a second end arm section and at least one middle arm section, wherein the first end arm section is positioned on the outer side of the adjacent middle arm section, the second end arm section is positioned on the inner side of the adjacent middle arm section, the first lap joint is arranged on the inner side of the first end arm section, the second lap joint is arranged on the side wall of the second end arm section, the second lap joint is arranged on the outer side of one end of the middle arm section, and the first lap joint is arranged on the inner side of the other end of the middle arm section.

According to the telescopic supporting structure provided by the utility model, more than two intermediate arm sections are arranged, and each intermediate arm section is sleeved in sequence.

The utility model also provides a working machine comprising the telescopic supporting structure.

According to the telescopic supporting structure provided by the utility model, the two adjacent arm sections are mutually matched through the first lap joint piece and the second lap joint piece, so that the pressure between the bottom plate of the arm section positioned at the inner side and the bottom plate of the arm section positioned at the outer side can be dispersed to the side wall position of the arm section, the problem of concentrated stress is effectively solved, and the supporting capacity is improved.

Further, the working machine according to the present utility model has the above-described advantages because it has the telescopic support structure.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a partial cross-sectional view of a telescoping support structure provided by the present utility model;

FIG. 2 is a sectional view B-B of FIG. 1;

reference numerals: 100. a first end arm segment; 101. a top plate; 102. a bottom plate; 103. a side plate; 200. a middle arm section; 300. a second end arm segment; 400. a support leg; 500. a first strap; 600. a second strap; 601. and a guiding inclined plane.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The telescopic support structure according to the embodiment of the present utility model will be described with reference to fig. 1 and 2, wherein fig. 1 is a partial cross-sectional view of the telescopic support structure according to the embodiment of the present utility model, and fig. 2 is a B-B cross-sectional view of fig. 1.

A telescoping support structure according to an embodiment of the present utility model includes telescoping arms and legs 400. The telescopic arm comprises at least two sleeved arm sections, and the arm sections can slide relatively along the length direction so as to adjust the supporting length; the support leg 400 is vertically fixed to the telescopic arm, specifically, the support leg 400 is vertically fixed to an arm segment at the end of the telescopic arm having a smaller cross section.

In the adjacent arm sections of the telescopic arm, the inner side wall of the arm section positioned at the outer side is provided with a first lap joint 500, the side wall of the arm section positioned at the inner side is provided with a second lap joint 600 corresponding to the first lap joint 500, and when the arm section positioned at the inner side is in the extending state, the first lap joint 500 is positioned at the lower side of the corresponding second lap joint 600 and is in contact fit with the corresponding second lap joint 600.

In the scheme, the telescopic arm can be horizontally arranged, and when one end of the telescopic arm is installed on a vehicle body of the working machine, the telescopic support structure can be unfolded and retracted through the telescopic of the telescopic arm. When the support leg 400 is used for supporting, the support leg 400 upwards supports the end part of the telescopic arm, so that the adjacent arm sections of the telescopic arm are extruded in the vertical direction, and at the moment, the first lap joint 500 and the second lap joint 600 are matched with each other, so that the extrusion force of the bottom part between the adjacent arm sections can be dispersed to the side wall, and the stress concentration is effectively prevented.

The first and second straps 500 and 600 may be connected to the corresponding arm segments by welding so that they have good connection strength; of course, the detachable connection can be performed by means of, for example, bolting, etc. to facilitate replacement.

It can be understood that, in the telescopic supporting structure of the embodiment of the utility model, only two or more than three telescopic arm sections can be arranged, and the telescopic supporting structure can be flexibly selected according to actual use requirements.

In some embodiments of the present utility model, the arm sections of the telescopic arm are provided with three or more, specifically, as shown in fig. 1, the telescopic arm includes a first end arm section 100, a second end arm section 300 and at least one intermediate arm section 200, the first end arm section 100 is located at the outer side of the adjacent intermediate arm section 200, the second end arm section 300 is located at the inner side of the adjacent intermediate arm section 200, the inner side of the first end arm section 100 is provided with a first bridge piece 500, the side wall of the second end arm section 300 is provided with a second bridge piece 600, the outer side of one end of the intermediate arm section 200 is provided with a second bridge piece 600, and the inner side of the other end of the intermediate arm section 200 is provided with a first bridge piece 500.

In the above-described aspect, the leg 400 may be fixed vertically to the second end arm segment 300, and a structure such as an ear plate may be provided on the outer side of the first end arm segment 100 so as to be connected to the vehicle body.

It will be appreciated that since the intermediate arm segment 200 is provided with both the first strap 500 and the second strap 600, both ends thereof may form a good support structure with the adjacent arm segments (first end arm segment 100, second end arm segment 300 or other intermediate arm segments 200). Taking the structure shown in fig. 1 as an example, the middle arm section 200 is provided with one, the outer sidewall of one end of which is provided with a second bridge 600, the second bridge 600 being capable of being engaged with the first bridge 500 of the first end arm section 100, the inner sidewall of the other end of the middle arm section 200 is provided with a first bridge 500, the first bridge 500 being capable of being engaged with the second bridge 600 of the second end arm section 300, whereby the first end arm section 100 and the middle arm section 200 and the second end arm section 300 are supported at the connection position by the first bridge 500 and the second bridge 600.

Optionally, the middle arm section 200 is provided with more than two middle arm sections 200, the sizes of the middle arm sections 200 are gradually decreased one by one, and the middle arm sections 200 are sleeved in sequence, so that the telescopic arm can have a larger telescopic range by increasing the number of the middle arm sections 200.

According to the telescopic support structure of the embodiment of the present utility model, at least one of the first and second straps 500 and 600 extends in the length direction of the arm segment. Therefore, the first lapping member 500 and the second lapping member 600 can be better matched, the situation that the first lapping member 500 and the second lapping member 600 are not overlapped in place to influence the supporting effect is avoided, in addition, the first lapping member 500 and/or the second lapping member 600 can be more firmly connected with the arm joint by increasing the length of the first lapping member 500 and/or the second lapping member 600, and the dispersed stress can be facilitated.

As shown in fig. 1, in an alternative, the second bridge 600 extends along the length of the arm segment, and the second bridge 600 is provided with a guide slope 601, the guide slope 601 being gradually inclined from one end facing away from the leg 400 to one end near the leg 400 to one side facing away from the first bridge 500. By providing the guide inclined surface 601, the relative sliding between the arm sections can be smoother, and the first lap joint 500 and the second lap joint 600 can be prevented from being blocked.

The specific structure of the arm segment and the arrangement positions of the first and second straps 500, 600 are described in detail below with reference to fig. 1 and 2.

According to the telescopic support structure of the embodiment of the present utility model, the arm section includes a top plate 101, a bottom plate 102, and a pair of side plates 103. Wherein, roof 101 and bottom plate 102 set up relatively, and a pair of curb plate 103 set up relatively and all set up fixedly between roof 101 and bottom plate 102 between, roof 101, bottom plate 102 and a pair of curb plate 103 enclose the inner chamber. The distance between the pair of side plates 103 is smaller than the widths of the bottom plate 102 and the top plate 101, so that the opposite direction sides of the pair of side plates 103 enclose lateral grooves with the top plate 101 and the bottom plate 102, respectively. Preferably, the pair of side plates 103 is the same size as the pair of lateral slots defined by the top plate 101 and the bottom plate 102.

It will be appreciated that the width of the inner cavity of the outer arm segment is greater than or equal to the width of the inner arm segment and the height of the inner cavity of the outer arm segment is greater than or equal to the height of the inner arm segment between two adjacent arm segments, whereby a sliding connection between two adjacent arm segments can be achieved. Preferably, the width of the inner cavity of the arm section positioned at the outer side is equal to the width of the arm section positioned at the inner side, and the height of the inner cavity of the arm section positioned at the outer side is equal to the height of the arm section positioned at the inner side, so that stable sliding between two adjacent arm sections is realized.

Further, the first bridge 500 is located in the inner cavity, the second bridge 600 is located in the lateral groove, the height of the upper side of the first bridge 500 is the same as the height of the lower side of the second bridge 600, and when the adjacent two arm sections slide close to each other (i.e. the telescopic arm is shortened), the first bridge 500 and the second bridge 600 can slide relatively until the first bridge 500 and the lower side of the second bridge 600 are in contact with each other.

It will be appreciated that the thickness of the first and second straps 500, 600 is less than or equal to the depth of the lateral slots to prevent the first and second straps 500, 600 from affecting the relative sliding between adjacent arm segments. Preferably, the thickness of the first and second landing members 500 and 600 is equal to the depth of the lateral groove, thereby enabling the first and second landing members 500 and 600 to form a larger contact area, and the first and second landing members 500 and 600 can also enhance the telescopic stability and lateral bearing capacity of the telescopic arm.

Alternatively, the upper side of the second bridge 600 is in contact with the lower side of the top plate 101, and the upper side of the second bridge 600 may be directly abutted against the lower side of the top plate 101, or may be further welded and fixed. This arrangement allows the top plate 101 to provide downward support for the second bridge 600, thereby reducing the shear stress between the second bridge 600 and the side wall of the arm segment where it is located when the second bridge 600 is subjected to the upward pressure of the first bridge 500.

In some embodiments of the utility model, referring to fig. 1 and 2, two opposite inner sidewalls of an outer arm segment are respectively provided with a first bridge 500, and two opposite sides of an inner arm segment are respectively provided with a second bridge 600. Taking the first end arm segment 100 and the middle arm segment 200 adjacent to the first end arm segment 100 as an example, two first overlapping pieces 500 are symmetrically arranged in the inner cavity of the first end arm segment 100, the two first overlapping pieces 500 are respectively arranged on the two side plates 103 of the first end arm segment 100, one second overlapping piece 600 is respectively arranged in the lateral grooves on two sides of the middle arm segment 200, and when the middle arm segment 200 stretches out, the two first overlapping pieces 500 of the first end arm segment 100 and the two second overlapping pieces 600 of the middle arm segment 200 can be in contact fit in a one-to-one correspondence. The arrangement mode can enable each arm section of the telescopic arm to have better stress capability, and can avoid unilateral stress distortion.

The embodiment of the utility model also provides a working machine, which comprises the telescopic supporting structure.

The working machine according to the embodiment of the present utility model may be a concrete pump truck, a fire truck, a crane, or the like, and is not particularly limited herein, in other words, any working machine that can be applied to the telescopic support structure according to the embodiment of the present utility model is within the scope of the embodiment of the present utility model.

Optionally, the working machine according to the embodiment of the present utility model further includes a vehicle body and a telescopic driving device, where the telescopic supporting structure is disposed on the vehicle body, and the telescopic driving device is connected to the telescopic supporting structure and is used for driving the telescopic arm and/or the leg 400 to extend and retract.

Optionally, at least one telescopic supporting structure is respectively arranged on two sides of the vehicle body.

Optionally, the telescopic driving device comprises a pressure supply system and a hydraulic cylinder, wherein the pressure supply system is connected with an engine of the vehicle body, the engine obtains power, and the hydraulic cylinder is respectively connected with the pressure supply system and the telescopic supporting structure.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A telescoping support structure, comprising:

the telescopic arm comprises at least two sleeved arm sections;

the support legs are vertically fixed with the telescopic arms;

the telescopic arm comprises an arm section, wherein the arm section is arranged on the outer side, a first lap joint piece is arranged on the inner side wall of the arm section, a second lap joint piece corresponding to the first lap joint piece is arranged on the inner side, and when the arm section is arranged on the inner side and is in an extending state, the first lap joint piece is arranged on the lower side of the corresponding second lap joint piece and is in contact fit with the corresponding second lap joint piece.

2. The telescoping support structure of claim 1, wherein at least one of the first and second straps extends along a length of the arm segment.

3. The telescoping support structure of claim 2, wherein the second bridge extends along the length of the arm segment and is provided with a guide ramp.

4. A telescopic support structure according to any one of claims 1 to 3, wherein the arm section comprises a top plate, a bottom plate and a pair of side plates, the pair of side plates being fixedly arranged between the top plate and the bottom plate, the top plate, the bottom plate and the pair of side plates enclosing an inner cavity, and the pair of side plates enclosing lateral grooves with the top plate and the bottom plate respectively on sides facing away from each other.

5. The telescoping support structure of claim 4, wherein the first strap is positioned in the interior cavity and the second strap is positioned in the lateral slot.

6. The telescoping support structure of claim 5, wherein an upper side of the second strap engages a lower side of the top plate.

7. The telescopic support structure according to claim 1, wherein, in the arm sections adjacent to the telescopic arm, two opposite inner side walls of the arm section located at the outer side are respectively provided with a first lap joint, and two opposite sides of the arm section located at the inner side are respectively provided with the second lap joint.

8. The telescoping support structure of claim 1, wherein the telescoping arm comprises a first end arm section, a second end arm section, and at least one intermediate arm section, the first end arm section being located outboard of the adjacent intermediate arm section, the second end arm section being located inboard of the adjacent intermediate arm section, the inboard of the first end arm section being provided with the first bridge, the side wall of the second end arm section being provided with the second bridge, the outboard of one end of the intermediate arm section being provided with the second bridge, the inboard of the other end of the intermediate arm section being provided with the first bridge.

9. The telescopic support structure according to claim 8, wherein more than two intermediate arm sections are provided, each intermediate arm section being sleeved in turn.

10. A work machine comprising a telescopic support structure according to any one of claims 1 to 9.