Portal frame of bucket-wheel excavator

Abstract

The utility model belongs to the technical field of bucket-wheel excavators, and particularly relates to a portal frame of a bucket-wheel excavator, which comprises a base and a transverse support, a plurality of first side supporting pieces are mounted above the base, a plurality of first inclined supporting pieces are mounted below the transverse support, and the first inclined supporting pieces are fixedly or detachably connected with the first side supporting pieces respectively. Compared with the prior art, the base, the first side supporting pieces, the first inclined supporting pieces and the transverse support form the square shape, the stability and the bearing capacity of the portal frame are improved, force can be more evenly distributed on the first side supporting pieces and the base in the force transmission process, the situation that local stress is too large is reduced, and the service life of the portal frame is prolonged. And the structural strength and stability of the whole portal frame are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bucket-wheel excavators, and particularly relates to a gantry of a bucket-wheel excavator. Background Art

[0002] At present, the gantry is used to install the boom of an excavator. However, the existing gantry is in an "n" shape, which is very easy to deform, has an unstable structure, and it is not easy to find the center of gravity during the manufacturing and installation process.

[0003] Moreover, the gantry and the externally connected hydraulic cylinder seat are directly connected by a pin shaft. In this way, the pin shaft is very easy to fall off under the extrusion of external force and is also easy to wear. Summary of the Utility Model

[0004] The utility model provides a gantry of a bucket-wheel excavator for solving the above problems.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a gantry of a bucket-wheel excavator, including a base and a cross support. A plurality of first side support members are installed above the base, and a plurality of first inclined support members are installed below the cross support. The plurality of first inclined support members are respectively fixedly connected or detachably connected to the plurality of first side support members.

[0006] Preferably, the base, the plurality of first side support members, the plurality of first inclined support members and the cross support form a "square" shape.

[0007] Preferably, through holes one are formed in the sides of the plurality of first inclined support members. Fixed bearings are installed in the through holes one, connecting shafts are installed in the fixed bearings, and connecting cylinders are detachably connected to the outer periphery of the connecting shafts.

[0008] Preferably, a first cavity is formed inside the base. The upper part of the first cavity is an opening. A second inclined plate is installed above the first cavity. A plurality of support components are installed or detachably connected inside the first cavity. Through holes two are formed in the plurality of support components. The connecting shafts are located in the through holes two. A first inclined plate is installed above the second inclined plate and above the first cavity away from the second inclined plate.

[0009] Preferably, a first support plate is installed between the plurality of support components. The plurality of support components each include a fourth support plate and a fifth support plate. A second support plate is installed above the fourth support plate. A third support plate is installed above the fifth support plate. The through holes one are formed in the sides of the third support plate and the second support plate.

[0010] Preferably, a connecting plate is installed between the third support plate and the second support plate. An arc-shaped groove is formed above the connecting plate. The outer periphery of the connecting shaft is matched with the arc-shaped groove.

[0011] Preferably, the heights of the upper parts of the fifth support plate and the fourth support plate are both higher than those of the corresponding lower parts, and the sides of the fifth support plate and the fourth support plate close to the second inclined plate are both in contact with the inner side of the first cavity of the base; the sides of the third support plate and the second support plate are both in contact with the second inclined plate.

[0012] Preferably, a plurality of connecting columns are installed or detachably connected between the fourth support plate and the fifth support plate.

[0013] Preferably, a third through hole is provided above the transverse support, a first bearing assembly and a second bearing assembly are installed in the third through hole, a pin shaft is installed inside the first bearing assembly and the second bearing assembly, and a hydraulic cylinder seat is externally connected above the pin shaft.

[0014] Preferably, a fixing member is threadedly connected below the pin shaft.

[0015] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0016] (1) The existing gantry is in an "n" shape, while the base, multiple first side support members, multiple first inclined support members and the transverse support in the present utility model form a "square" shape, improving the stability and bearing capacity of the gantry;

[0017] (2) The local first inclined support member, the first side support member and the transverse support form a triangle, which can distribute the force more evenly to the first side support member and the base during the force transmission process, reducing the situation of excessive local stress and improving the structural strength and stability of the entire gantry;

[0018] (3) The sides of the second support plate and the third support plate are in contact with the second inclined plate, and the rigid support of the second inclined plate is used to further restrict the lateral displacement of the support assembly, ensuring the positioning accuracy and installation positioning of the connecting shaft when it is stressed;

[0019] (4) The existing gantry is directly connected to the externally connected hydraulic cylinder seat by a pin shaft, while in the present utility model, a third through hole is provided on the transverse support, a first bearing assembly and a second bearing assembly are installed in the third through hole, and the pin shaft is installed inside the first bearing assembly and the second bearing assembly, so that the force applied during the extrusion of the external force acts on the first bearing assembly and the second bearing assembly, reducing the extrusion of the pin shaft and preventing the pin shaft from being worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments:

[0021] Figure 1 The front view of the gantry of the bucket wheel excavator provided for Embodiment 1, Embodiment 2, and Embodiment 3;

[0022] Figure 2 Schematic diagram of the gantry of a bucket-wheel excavator

[0023] Figure 3 is Figure 2 an enlarged view of part A of

[0024] Figure 4 is Figure 2 an enlarged view of part B of

[0025] Figure 5 Rear view of the gantry of a bucket-wheel excavator

[0026] Figure 6 is Figure 5 an enlarged view of part C of

[0027] Explanation of reference numerals:

[0028] 1. Base; 2. First side support member; 3. First inclined support member; 4. Horizontal support; 5. Support assembly; 6. First inclined plate; 7. Connecting shaft; 8. Connecting cylinder; 9. Second inclined plate; 10. First support plate; 11. Second support plate; 12. Third support plate; 13. Connecting plate; 14. Fourth support plate; 15. Fifth support plate; 16. Connecting column; 17. First bearing assembly; 18. Second bearing assembly; 19. Pin shaft Detailed implementation manners

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments

[0030] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification Embodiment

[0031] The following combines the attached Figure 1 - attached Figure 2 to further describe the present invention. A gantry of a bucket-wheel excavator, as Figures 1-2 shown, includes a base 1 and a horizontal support 4. Above the base 1, a plurality of first side support members 2 are installed. Below the horizontal support 4, a plurality of first inclined support members 3 are installed. The plurality of first inclined support members 3 are respectively fixedly connected or detachably connected to the plurality of first side support members 2

[0032] As Figures 1-2 shown, the base 1, the plurality of first side support members 2, the plurality of first inclined support members 3 and the horizontal support 4 form a "square" shape

[0033] In this embodiment, the number of the first side support members 2 is two, and the number of the first inclined support members 3 is two

[0034] In this embodiment, the lower part and the upper part of the first inclined support member 3 are on different vertical planes, and the vertical plane where the upper part of the first inclined support member 3 is located is close to the middle position between the multiple first inclined support members 3.

[0035] In this embodiment, the base 1, the first side support member 2 and the first inclined support member 3 are integrally formed.

[0036] The working principle in this embodiment is as follows: The base 1, the multiple first side support members 2, the multiple first inclined support members 3 and the cross support 4 form a "square" - shaped structure, which has good stability and bearing capacity;

[0037] The lower part and the upper part of the first inclined support member 3 are on different vertical planes, and the vertical plane where the upper part is located is close to the middle position between the multiple first inclined support members 3, which enables the first inclined support member 3 to connect the cross support 4 and the first side support member 2 in an inclined manner, forming a stable triangular support structure (although the overall is "square" - shaped, but locally the first inclined support member 3, the first side support member 2 and the cross support 4 form a triangle). When the bucket - wheel excavator is working, operations such as excavating materials will generate various forces. These forces are transmitted to the cross support 4, and the cross support 4 transmits the forces to the first side support member 2 through the first inclined support member 3, making the forces be more evenly distributed to the first side support member 2 and the base 1 during the transmission process, reducing the situation of excessive local stress, and improving the structural strength and stability of the entire gantry. Embodiment

[0038] The main difference between this embodiment and Embodiment 1 is: As Figure 2 shown, through - holes one are provided on the side surfaces of the multiple first inclined support members 3. Fixed bearings are installed in the through - holes one, connecting shafts 7 are installed in the fixed bearings, and connecting cylinders 8 are detachably connected to the outer periphery of the connecting shafts 7.

[0039] As Figure 2 shown, a cavity one is provided inside the base 1. The upper part of the cavity one is an opening, an inclined plate two 9 is installed above the cavity one, multiple support components 5 are installed or detachably connected inside the cavity one, through - holes two are provided in the multiple support components 5, the connecting shafts 7 are located in the through - holes two, and an inclined plate one 6 is installed above the inclined plate two 9 and above the cavity one away from the inclined plate two 9.

[0040] As Figure 2 、and Figure 3 shown, a first support plate 10 is installed between the multiple support components 5. The multiple support components 5 all include a fourth support plate 14 and a fifth support plate 15. A second support plate 11 is installed above the fourth support plate 14, a third support plate 12 is installed above the fifth support plate 15, and the through - holes one are provided on the side surfaces of the third support plate 12 and the second support plate 11.

[0041] As Figure 2 ,and Figure 3 As shown, a connecting plate 13 is installed between support plate three 12 and support plate two 11. An arc-shaped groove is formed on the upper part of the connecting plate 13, and the outer periphery of the connecting shaft 7 mates with the arc-shaped groove. The height of the upper part of support plate five 15 and support plate four 14 is higher than the height of the corresponding lower part, and the sides of support plate five 15 and support plate four 14 near the inclined plate two 9 are in contact with the inner side of the cavity one of the base 1; the sides of support plate three 12 and support plate two 11 are in contact with inclined plate two 9.

[0042] like Figure 2 and Figure 4 As shown, multiple connecting columns 16 are installed or detachably connected between support plate four 14 and support plate five 15.

[0043] In this embodiment, the upper part of support plate 5 15 and support plate 4 14 passes through inclined plate 1 6, and the height of the highest point of inclined plate 1 6 is lower than the upper height of support plate 5 15, thereby limiting the excessive upward movement of support assembly 5 and providing a guiding positioning reference for the installation of connecting shaft 7.

[0044] In this embodiment, the sides of support plate 3 12 and support plate 2 11 are in contact with inclined plate 2 9, and the connecting shaft 7 is located in the through hole 1. Thus, during the installation process, the connecting shaft 7 is installed and positioned by support plate 3 12 and support plate 2 11.

[0045] In this embodiment, the sides of support plate five 15 and support plate four 14 near inclined plate two 9 are in contact with inclined plate two 9, and this contact surface is located above the contact surface with the inner side of cavity one.

[0046] The working principle of this embodiment is as follows: Based on embodiment 1, the upper surface of support plate four 14 and support plate five 15 is higher than the lower surface, and the side near inclined plate two 9 is in close contact with the inner side of cavity one, forming an inclined support structure. The inclined load transmitted by inclined support member one 3 is converted into a normal pressure perpendicular to the contact surface, which is evenly distributed to base 1 through the inner wall of cavity one. The side of support plate two 11 and support plate three 12 is in contact with inclined plate two 9. The rigid support of inclined plate two 9 further constrains the lateral displacement of support assembly 5, ensuring the positioning accuracy of connecting shaft 7 when under force. Example

[0047] The main difference between this embodiment and Embodiment 1 is: Figure 5 and Figure 6 As shown, a through hole three is provided above the horizontal support 4. Bearing assembly one 17 and bearing assembly two 18 are installed in the through hole three. A pin 19 is installed inside the bearing assembly one 17 and bearing assembly two 18. A hydraulic cylinder seat is connected to the top of the pin 19.

[0048] like Figure 5 and Figure 6As shown, a fastener is threadedly connected to the lower part of the pin 19.

[0049] In this embodiment, both bearing assembly 17 and bearing assembly 18 include a bearing housing and a bearing.

[0050] As the technical solution of this utility model, the provided hardware configuration is merely to facilitate the implementation of specific braking control based on the hardware facilities. How to specifically implement braking control and the braking control method are not the technical problems to be solved or the objects of protection of this utility model. Furthermore, the communication methods between the devices all adopt existing communication methods, which are not the focus of this application.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A portal of a bucket wheel excavator, comprising a base (1) and a cross support (4), characterized in that, The upper side of the base (1) is provided with a plurality of side supports (2), and the lower side of the horizontal support (4) is provided with a plurality of inclined supports (3), which are fixedly connected or detachably connected with the plurality of side supports (2).

2. The gantry of a bucket wheel excavator according to claim 1, characterized in that The base (1), the plurality of side supports (2), the plurality of inclined supports (3) and the horizontal support (4) form a "mouth" shape.

3. The gantry of a bucket wheel excavator according to claim 1 or 2, characterized in that The side surface of each of the plurality of inclined supports (3) is provided with a through hole (1), and a fixed bearing is arranged in the through hole (1), and a connecting shaft (7) is arranged in the fixed bearing, and a connecting barrel (8) is detachably connected to the outer periphery of the connecting shaft (7).

4. The gantry of a bucket wheel excavator according to claim 3, characterized in that The inside of the base (1) is provided with a cavity (1), and the upper side of the cavity (1) is an opening, and an inclined plate (9) is arranged on the upper side of the cavity (1), and a plurality of support assemblies (5) are arranged in or detachably connected in the cavity (1), and a through hole (2) is arranged in each of the plurality of support assemblies (5), and the connecting shaft (7) is arranged in the through hole (2), and an inclined plate (6) is arranged on the upper side of the inclined plate (9) and away from the upper side of the cavity (1).

5. The gantry of a bucket wheel excavator according to claim 4, characterized in that A support plate (10) is arranged between the plurality of support assemblies (5), and each of the plurality of support assemblies (5) comprises a support plate (4) and a support plate (5), a support plate (2) is arranged on the upper side of the support plate (4), a support plate (3) is arranged on the upper side of the support plate (5), and the through hole (1) is arranged on the side surface of the support plate (3) and the support plate (2).

6. The gantry of a bucket wheel excavator according to claim 5, characterized in that A connecting plate (13) is arranged between the support plate (3) and the support plate (2), an arc-shaped groove is arranged on the upper side of the connecting plate (13), and the outer periphery of the connecting shaft (7) is matched with the arc-shaped groove.

7. The gantry of a bucket wheel excavator according to claim 5, characterized in that The height of the upper side of the support plate (5) and the support plate (4) is higher than the height of the lower side, and the side surface of the support plate (5) and the support plate (4) close to the inclined plate (9) is in contact with the inner side of the cavity (1) of the base (1). The side surface of the support plate (3) and the support plate (2) is in contact with the inclined plate (9).

8. The gantry of a bucket wheel excavator according to claim 5, characterized in that A plurality of connecting columns (16) are arranged or detachably connected between the support plate (4) and the support plate (5).

9. The gantry of a bucket wheel excavator according to claim 1, characterized in that The upper side of the horizontal support (4) is provided with a through hole (3), and a bearing assembly (17) and a bearing assembly (18) are arranged in the through hole (3), a pin shaft (19) is arranged in the bearing assembly (17) and the bearing assembly (18), and a hydraulic cylinder seat is arranged on the upper side of the pin shaft (19).

10. The gantry of a bucket wheel excavator according to claim 9, characterized in that The lower side of the pin shaft (19) is threadedly connected with a fixing member.

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