Connecting rod structure and engineering equipment

Abstract

The utility model provides a connecting rod structure and engineering equipment. The connecting structure comprises a connecting rod body, a connecting sleeve arranged at one end of the connecting rod body, and a first supporting sleeve, a second supporting sleeve and a third supporting sleeve which are sequentially arranged at the other end of the connecting rod body side by side at intervals. A first gap between the first supporting sleeve and the second supporting sleeve is used for installing a piston rod head of a first oil cylinder, a second gap between the second supporting sleeve and the third supporting sleeve is used for installing a piston rod head of a second oil cylinder, and the first supporting sleeve and the third supporting sleeve are each internally provided with a first shaft sleeve with a first preset width. Two second shaft sleeves with a second preset width are arranged in the second supporting sleeve; according to the utility model, the assembling requirement and the strength requirement for assembling two oil cylinders can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a connecting rod structure and an engineering equipment. Background Art

[0002] Traditionally, when designing ultra-large excavators, in order to meet the working requirements, high-strength, heavy-duty mechanical arms and large-capacity buckets are widely used as working devices, and large-sized boom cylinders, stick cylinders and bucket cylinders are used to ensure super-large digging force. However, in the initial stage of project development, due to the small quantity, large-sized cylinders often have disadvantages in terms of cost and supply guarantee. Usually, two small-sized cylinders are used for equal replacement, which can not only meet the working requirements but also solve the above problems. However, for the connecting rod device assembled and connected with two bucket cylinders, it is necessary to ensure the assembly requirements with two bucket cylinders and bushings, meet the requirements for the structural strength of the connecting rod device due to the harsh working conditions of ultra-large excavators, and also consider low-cost development.

[0003] Therefore, there is an urgent need for a connecting rod structure and an engineering equipment that can meet the assembly requirements, strength requirements and cost requirements for assembling two cylinders. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a connecting rod structure and an engineering equipment, aiming to solve the technical problem that it is difficult for the traditional connecting rod device to take into account the assembly requirements, strength requirements and cost requirements for assembling two cylinders.

[0005] To achieve the above purpose, in the first aspect, the utility model provides a connecting rod structure, which includes a connecting rod body, a connecting sleeve arranged at one end of the connecting rod body, and a first support sleeve, a second support sleeve and a third support sleeve that are sequentially arranged side by side and at intervals at the other end of the connecting rod body;

[0006] A first interval between the first support sleeve and the second support sleeve is for installing the piston rod head of a first cylinder, a second interval between the second support sleeve and the third support sleeve is for installing the piston rod head of a second cylinder, and first bushings with a first preset width are respectively arranged in the first support sleeve and the third support sleeve; two second bushings with a second preset width are arranged in the second support sleeve.

[0007] As a further improvement of the above solution, the second preset width is less than the distance of the first interval and less than the distance of the second interval.

[0008] As a further improvement of the above solution, the connecting rod structure further includes a connecting plate, one end of the connecting plate is connected to the outer wall of the connecting sleeve, and the other end is sequentially connected to the outer walls of the first support sleeve, the second support sleeve and the third support sleeve;

[0009] And the connecting plate is respectively provided with grooves at positions corresponding to the first interval and / or the second interval, so as to facilitate the installation of the piston rod head.

[0010] As a further improvement of the above solution, the connecting rod structure further includes two first rib plates, one end of one of the first rib plates is connected to the outer wall of the connecting sleeve, and the other end is connected to the outer side of the outer wall of the first support sleeve;

[0011] One end of the other first rib plate is connected to the outer wall of the connecting sleeve, and the other end is connected to the outer side of the outer wall of the third support sleeve.

[0012] As a further improvement of the above solution, the connecting rod structure further includes two second rib plates, and a second clamping groove is provided in the middle of the second rib plate for vertically clamping on the connecting plate;

[0013] One end of one of the second rib plates is connected to the outer wall of the first support sleeve, and its second clamping groove is correspondingly clamped on the connecting plate;

[0014] One end of the other second rib plate is connected to the outer wall of the third support sleeve, and its second clamping groove is correspondingly clamped on the connecting plate.

[0015] As a further improvement of the above solution, the connecting rod structure further includes a third rib plate for vertically arranging on the connecting plate;

[0016] One end of the third rib plate is connected to the outer wall of the connecting sleeve, and the other end is connected to the outer wall of the second support sleeve.

[0017] As a further improvement of the above solution, lubricating oil filling ports are provided on the connecting sleeve, the first support sleeve, the second support sleeve and the third support sleeve.

[0018] In a second aspect, the present invention further provides an engineering device, including the connecting rod structure provided in the first aspect.

[0019] Since the present invention adopts the above technical solutions, the beneficial effects of the present application are as follows:

[0020] The present utility model provides a connecting rod structure, which includes a connecting rod body, a connecting sleeve arranged at one end of the connecting rod body, and a first support sleeve, a second support sleeve and a third support sleeve which are sequentially arranged side by side and at intervals at the other end of the connecting rod body; a first interval between the first support sleeve and the second support sleeve is for installing the piston rod head of a first oil cylinder, a second interval between the second support sleeve and the third support sleeve is for installing the piston rod head of a second oil cylinder, and first bushings with a first preset width are respectively arranged in the first support sleeve and the third support sleeve; two second bushings with a second preset width are arranged in the second support sleeve; in the present utility model, two intervals are formed by the three support sleeves arranged at intervals for installing the piston rod heads of two oil cylinders, and at the same time, by skillfully arranging two second bushings with a second preset width in the second support sleeve, and the second preset width is less than the distance of the first interval and less than the distance of the second interval, so that the second bushings can be smoothly installed into the two intervals respectively, thereby overcoming the conventional design idea of widening the width of the connecting rod body; since this connecting rod structure can meet the requirement of installing two oil cylinder piston heads without widening the width of the connecting rod body and the corresponding installation parts of the connecting structure, the cost can be reduced;

[0021] In addition, the connecting rod structure further includes a connecting plate, a first rib plate, a second rib plate and a third rib plate, which are arranged between the connecting sleeve and the three support sleeves. First of all, the arrangement of the connecting plate and the three rib plates can provide sufficient strength for the connecting rod structure to meet the strength requirements; secondly, it is convenient for welding forming. Compared with casting forming, the cost of welding forming is lower, especially in the early development and testing stage;

[0022] In the layout of the connecting plate and the three rib plates, the connecting plate is horizontally arranged between the connecting sleeve and the three support sleeves, the three rib plates are vertically arranged on the connecting plate, and are respectively welded to the corresponding support sleeve and / or connecting sleeve; this arrangement of vertical and horizontal rib plates and the connecting plate can achieve a better strengthening effect, making the strength of this connecting rod structure more reliable; furthermore, the three rib plates are arranged with staggered heights, which is convenient for the welding torch to weld in the effective space. Description of the Drawings

[0023] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 It is a three-dimensional schematic diagram of a connecting rod structure disclosed by the present utility model;

[0025] Figure 2 A cross-sectional schematic view of a connecting rod structure disclosed by the present utility model;

[0026] Figure 3 A front view schematic diagram of a connecting plate disclosed by the present utility model;

[0027] Figure 4 A front view schematic diagram of the third rib plate disclosed by the present utility model Figure 1 ;

[0028] Figure 5 A front view schematic diagram of the second rib plate disclosed by the present utility model;

[0029] Figure 6 A partial three-dimensional schematic diagram of an engineering device equipped with a connecting rod structure disclosed by the present utility model;

[0030] Figure 7 A front view schematic diagram of a special-shaped plate in a spliced connecting plate disclosed by the present utility model;

[0031] Figure 8 A front view schematic diagram of a transverse plate in a spliced connecting plate disclosed by the present utility model;

[0032] Figure 9 A front view schematic diagram of the third rib plate disclosed by the present utility model Figure 2 .

[0033] Reference numerals:

[0034] 0, connecting rod structure; 01, first oil cylinder; 02, second oil cylinder; 03, bucket rod;

[0035] 1, connecting rod body; 2, connecting sleeve; 4, first support sleeve; 5, second support sleeve; 6, third support sleeve; 7, second bushing; 8, connecting plate; 8b, special-shaped plate; 81, groove; 9, first rib plate; 10, second rib plate; 101, second card slot; 11a, third rib plate; 111a, third card slot;; 11b, third rib plate; 12, transverse plate; A, first interval; B, second interval.

[0036] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0038] It should be noted that all directional indications (such as up, down,...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0040] Moreover, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] Embodiment 1

[0042] See Figures 1 - 5 , the present invention provides a connecting rod structure, including a connecting rod body 1, a connecting sleeve 2 provided at one end of the connecting rod body 1, and a first support sleeve 4, a second support sleeve 5, and a third support sleeve 6 arranged in sequence and spaced apart side by side at the other end of the connecting rod body 1;

[0043] A first interval A between the first support sleeve 4 and the second support sleeve 5 is for installing the piston rod head of the first oil cylinder 01, a second interval B between the second support sleeve 5 and the third support sleeve 6 is for installing the piston rod head of the second oil cylinder 02, and first bushings with a first preset width are respectively provided in the first support sleeve 4 and the third support sleeve 6; two second bushings 7 with a second preset width are provided in the second support sleeve 5; the second preset width is less than the distance of the first interval A and less than the distance of the second interval B;

[0044] To meet the assembly connection of this connecting rod structure 0 and two oil cylinders, compared with installing one oil cylinder, the structural space is relatively compact, as Figure 1As shown; since the pin shaft needs to pass through the first support sleeve 4, the piston rod head of the first oil cylinder 01, the second support sleeve 5, the piston rod head of the second oil cylinder 02, and the third support sleeve 6 in sequence, it is usually necessary to set a bushing in the support sleeve to ensure the flexible rotation of the pin shaft and improve the wear resistance of the connecting rod body 1; the installation of the bushing in the second support sleeve 5 located in the middle position becomes a problem. If the second support sleeve 5 is designed to be narrow enough to allow the bushing to be inserted, interference will occur in the installation space position of the two oil cylinders; if the width of the entire connecting rod structure 0 is set wide enough to leave enough assembly space for the bushing, the corresponding installation position on the engineering equipment does not allow it structurally. To overcome this contradiction, in the present utility model, two intervals are formed by three support sleeves arranged at intervals for the installation of the piston rod heads of the two oil cylinders. At the same time, by cleverly setting two in the second support sleeve 5 with a second preset width, and the second preset width is less than the distance of the first interval A and less than the distance of the second interval B, the second bushing 7 can be smoothly installed into the two intervals respectively, thereby overcoming the conventional design idea of widening the width of the connecting rod body 1; since this connecting rod structure 0 can meet the installation of the piston heads of the two oil cylinders without widening the width of the connecting rod body 1 and the corresponding installation parts of the connection structure, the cost can be reduced.

[0045] As a preferred embodiment, refer to Figure 3 , the connecting rod structure 0 further includes a connecting plate 8. One end of the connecting plate 8 is welded to the outer wall of the connecting sleeve 2, and the other end is welded to the outer walls of the first support sleeve 4, the second support sleeve 5, and the third support sleeve 6 in sequence;

[0046] and the connecting plate 8 is respectively provided with grooves 81 at the corresponding first interval A and / or the second interval B to facilitate the installation of the piston rod head;

[0047] In this embodiment, the connecting plate 8 is completed by splicing three plates. Specifically, it uses two special-shaped plates 8b as shown in Figure 7 . The two special-shaped plates 8b are symmetrically arranged, and a rectangular cross plate 12 is also arranged between the two special-shaped plates 8b, as shown in Figure 8 ;

[0048] In some embodiments, the connecting plate 8a is an integral plate, as shown in Figure 3 ;

[0049] As a preferred embodiment, refer to Figure 1 , the connecting rod structure 0 further includes two first rib plates 9. One end of one of the first rib plates 9 is welded to the outer wall of the connecting sleeve 2, and the other end is welded to the outer side of the outer wall of the first support sleeve 4. And one side of the first rib plate 9 is also welded to one side of the connecting plate 8;

[0050] One end of another said first rib plate 9 is welded to the outer wall of the connecting sleeve 2, and the other end is welded to the outer side of the outer wall of the third support sleeve 6. Moreover, one side of the first rib plate 9 is also welded to the other side of the connecting plate 8. The arrangement of the two first rib plates 9 and the connection of the connecting sleeve 2, the connecting plate 8, the first support sleeve 4 and the third support sleeve 6 into a whole by welding can improve the strength of the entire connecting rod structure 0.

[0051] As a preferred embodiment, referring to Figure 5 , the connecting rod structure 0 further includes two second rib plates 10. A second card slot 101 is provided in the middle of the second rib plate 10 for vertically clamping on the connecting plate 8. Moreover, the second rib plate 10 is in a shrinking shape from one end to the other end.

[0052] One end of one of the second rib plates 10 is welded to the inner side of the outer wall of the first support sleeve 4, and its second card slot 101 is correspondingly clamped on the connecting plate 8 and welded to the connecting plate 8 into a whole.

[0053] One end of the other second rib plate 10 is welded to the inner side of the outer wall of the third support sleeve 6, and its second card slot 101 is correspondingly clamped on the connecting plate 8 and welded to the connecting plate 8 into a whole. The arrangement of the second rib plates 10 strengthens the strength of the entire connecting rod structure 0.

[0054] As a preferred embodiment, referring to Figure 9 , the connecting rod structure 0 further includes a third rib plate 11b for vertically arranging on the connecting plate 8. Moreover, the middle of the third rib plate 11b is lower than the heights of both ends.

[0055] In some embodiments, when the connecting plate 8 is a whole plate, correspondingly, as Figure 4 shown, a third card slot 111a is provided in the middle of the third rib plate 11a so as to conveniently vertically arrange the third rib plate 11a on the connecting plate 8.

[0056] One end of the third rib plate 11 is connected to the outer wall of the connecting sleeve 2, and the other end is connected to the outer wall of the second support sleeve 5.

[0057] In this embodiment, two third rib plates 11 are provided and are correspondingly arranged at intervals on the outer wall of the second support. The third rib plates 11 are connected to the connecting sleeve 2, the connecting plate 8 and the second support sleeve 5 into a whole by welding. It can provide sufficient connection strength for the second support sleeve 5 and further strengthen the strength of the entire connecting rod structure 0.

[0058] In addition, in the setting of the three types of reinforcing ribs, they are arranged in a high-low-high manner, which is convenient for the welding torch to weld within an effective space.

[0059] As a preferred embodiment, lubricating oil filling ports are provided on the connecting sleeve 2, the first support sleeve 4, the second support sleeve 5, and the third support sleeve 6. The setting of the lubricating oil filling ports facilitates timely filling of lubricating oil into the connecting sleeve 2 and the support sleeves, thereby improving the service life and working condition of this connecting structure.

[0060] Embodiment 2

[0061] See Figure 6 , the present utility model also provides an engineering device, including the connecting rod structure 0 provided in Embodiment 1; specifically, in this embodiment, taking an engineering device excavator as an example for illustration, the excavator includes a bucket rod 03, and the connecting rod structure 0 is arranged on the bucket rod 03. During installation, the piston rod head of the first oil cylinder 01 is clamped within the first interval A, the piston rod head of the second oil cylinder 02 is clamped within the second interval B, and then the pin shaft is sequentially passed through the first support sleeve 4, the piston rod head of the first oil cylinder 01, the second support sleeve 5, the piston rod head of the second oil cylinder 02, and the third support sleeve 6 to achieve convenient assembly of the two oil cylinders in a limited space.

[0062] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A connecting rod structure, characterized in that, It includes a connecting rod body, a connecting sleeve provided at one end of the connecting rod body, and a first support sleeve, a second support sleeve, and a third support sleeve that are sequentially arranged side by side and spaced apart at the other end of the connecting rod body; A first interval between the first support sleeve and the second support sleeve is for installing the piston rod head of a first oil cylinder, a second interval between the second support sleeve and the third support sleeve is for installing the piston rod head of a second oil cylinder, and first bushings with a first preset width are respectively provided in the first support sleeve and the third support sleeve; two second bushings with a second preset width are provided in the second support sleeve.

2. The link structure according to claim 1, characterized in that, The second preset width is less than the distance of the first interval and less than the distance of the second interval.

3. A connecting rod structure according to claim 1 or 2, characterized in that, The connecting rod structure further includes a connecting plate, one end of the connecting plate is connected to the outer wall of the connecting sleeve, and the other end is sequentially connected to the outer walls of the first support sleeve, the second support sleeve, and the third support sleeve; And the connecting plate is respectively provided with grooves at positions corresponding to the first interval and / or the second interval to facilitate the installation of the piston rod head.

4. A connecting rod structure according to claim 1 or 2, characterized in that, The connecting rod structure further includes two first rib plates, one end of one of the first rib plates is connected to the outer wall of the connecting sleeve, and the other end is connected to the outer side of the outer wall of the first support sleeve; One end of the other first rib plate is connected to the outer wall of the connecting sleeve, and the other end is connected to the outer side of the outer wall of the third support sleeve.

5. A link structure according to claim 3, characterized in that, The connecting rod structure further includes two second rib plates, and a second card slot is provided in the middle of the second rib plate for vertically clamping on the connecting plate; One end of one of the second rib plates is connected to the outer wall of the first support sleeve, and its second card slot is correspondingly clamped on the connecting plate; One end of the other second rib plate is connected to the outer wall of the third support sleeve, and its second card slot is correspondingly clamped on the connecting plate.

6. A link structure according to claim 3, characterized in that The connecting rod structure further includes a third rib plate for vertically arranging on the connecting plate; One end of the third rib plate is connected to the outer wall of the connecting sleeve, and the other end is connected to the outer wall of the second support sleeve.

7. A link structure according to claim 1 or 2, characterized in that, Lubricating oil filling ports are provided on the connecting sleeve, the first support sleeve, the second support sleeve, and the third support sleeve.

8. An engineering device, characterized in that, It includes a connecting rod structure according to any one of claims 1-7.

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