Auxiliary device for mounting door-shaped bearing beam of wheel bucket excavator

Abstract

The invention discloses an auxiliary device for installing a door-shaped bearing beam of a wheel bucket excavator, and belongs to the technical field of wheel bucket excavator installation. The pitch reaming coaxial auxiliary device comprises a pitch reaming coaxial auxiliary device body and a vertical coaxial auxiliary device body, the pitch reaming coaxial auxiliary device body comprises a positioning shaft, a connecting beam detachably connected with the positioning shaft, and an end positioning sleeve connected to one side of the positioning shaft. The vertical coaxial auxiliary device comprises a base, a middle column detachably connected with the top of the base, a top positioning shaft detachably connected with the upper end of the middle column and a top positioning sleeve detachably connected with the top positioning shaft. The pitching reaming coaxial auxiliary device is connected with the pitching reaming of the door-shaped bearing beam disassembly piece in a matched mode, so that the coaxiality of the pitching reaming of the door-shaped bearing beam of the wheel bucket excavator is guaranteed. The vertical coaxial auxiliary device is connected with the rotation center of the unloading arm in a matched mode, so that the coaxiality of the rotation center of the unloading arm and the rotation center of the receiving arm is guaranteed. The auxiliary device for mounting the door-shaped bearing beam can be repeatedly used after being used.

Description

Technical Field

[0001] The present invention belongs to the technical field of bucket wheel excavator installation, and in particular relates to an auxiliary device for installing a door-type load-bearing beam of a bucket wheel excavator. Background Art

[0002] Open-pit continuous mining system is an efficient and continuous material excavation and transportation system, mainly used for mining or stripping of coal, ore and earth in large open-pit mines and earthwork projects.

[0003] The bucket wheel excavator is the core equipment of the continuous mining system. It is arranged at the front end of the system. It continuously excavates materials (coal or rock and soil) through its own bucket wheel device, and then transports the materials to the subsequent equipment of the system.

[0004] Bucket wheel excavators are large in size. Due to the limitations of transportation tools and transportation routes, they cannot be transported as a whole. They must be disassembled into multiple parts for transportation and then assembled after arriving at the site. Bucket wheel excavators are mainly composed of bucket wheel devices 5, receiving arms 6, unloading arms 4, crawler walking mechanisms 7, portal bearing beams 3 and other components. As an important component of bucket wheel excavators, portal bearing beams are connected to other components and play a role in connection and bearing. The portal bearing beam is a steel structure with large size and heavy weight. In order to meet transportation requirements, it needs to be further disassembled into multiple parts and welded and assembled on site. In order to ensure dimensional accuracy, auxiliary devices are indispensable during assembly.

[0005] The portal-type load-bearing beam is disassembled into multiple parts, and the various parts are assembled together on site by welding. During installation, the following problems exist: First, the disassembled structural parts are large in size, heavy in weight, and installed at a high height, making hoisting difficult. The assembly accuracy cannot be guaranteed during on-site installation, especially the coaxiality of the pitch reamer holes on both sides connected to the receiving arm and the coaxiality of the rotation center of the unloading arm and the rotation center of the receiving arm; Second, after the various parts of the disassembled portal-type load-bearing beam are assembled on site, the above-mentioned form and position tolerances do not meet the technical requirements due to welding deformation; Third, in order to ensure that the dimensional accuracy of each part of the disassembled portal-type load-bearing beam is qualified, it must be pre-assembled in the manufacturing plant before being shipped to the site. The auxiliary tooling used for assembly in the manufacturing plant cannot be adapted to the actual installation site; Fourth, there is a situation where open-pit mines are equipped with multiple sets of bucket wheel excavators for continuous mining systems. Therefore, multiple bucket wheel excavators are installed, and the temporary auxiliary devices are damaged when they are dismantled after installation and cannot be reused, resulting in waste. Summary of the invention

[0006] In view of the above shortcomings, an object of the present invention is to provide an auxiliary device for installing a portal bearing beam of a bucket wheel excavator.

[0007] The technical solution adopted by the invention is: an auxiliary device for installing a portal-type load-bearing beam of a bucket wheel excavator, the technical key points of which are that it comprises a pitch reaming coaxial auxiliary device and a vertical coaxial auxiliary device, wherein the pitch reaming coaxial auxiliary device comprises: a positioning shaft, a connecting beam detachably connected to the positioning shaft, and an end positioning sleeve connected to one side of the positioning shaft; the pitch reaming coaxial auxiliary device makes the pitch reaming holes of the disassembled parts located on both sides of the receiving arm in the portal-type load-bearing beam coaxial; The vertical coaxial auxiliary device includes a base, a middle column detachably connected to the top of the base, a top positioning shaft detachably connected to the upper end of the middle column, and a top positioning sleeve detachably connected to the top positioning shaft; the vertical coaxial auxiliary device makes the disassembly part passing through the rotation center of the unloading arm and the disassembly part passing through the rotation center of the receiving arm in the gate-type load-bearing beam coaxial.

[0008] In the above scheme, the positioning shaft is in the form of a stepped shaft, one end of which is a flange with a positioning hole; the left and right end surfaces of the connecting beam are respectively provided with positioning bosses that are adapted to the positioning holes on the positioning shaft, and the positioning bosses are inserted into the positioning holes to position the positioning shaft and the connecting beam coaxially.

[0009] In the above scheme, the positioning shaft and the connecting beam after coaxial positioning are fixed together through a firmware assembly.

[0010] In the above scheme, a first flange with a first positioning hole is provided on the top of the base, a second flange with a first positioning boss and a first positioning hole is provided at the lower end of the middle column, a third flange with a second positioning hole is provided at the upper end of the middle column, and a fourth flange with a second positioning boss is provided at the lower end of the top positioning shaft. The first positioning boss is inserted into the first positioning hole to position the base coaxially with the lower end of the middle column, and the second positioning boss is inserted into the second positioning hole to position the upper end of the middle column coaxially with the top positioning shaft. The top positioning shaft is a stepped shaft structure, on which a top positioning sleeve is connected.

[0011] In the above scheme, the coaxially positioned base and the lower end of the center column, and the upper end of the center column and the top positioning axis are fixed respectively through a second firmware group. The beneficial effects of the present invention are as follows: the auxiliary device for installing the portal-type bearing beam of a bucket wheel excavator comprises a pitch reaming coaxial auxiliary device and a vertical coaxial auxiliary device, wherein the pitch reaming coaxial auxiliary device comprises: a positioning shaft, a connecting beam detachably connected to the positioning shaft, and an end positioning sleeve connected to one side of the positioning shaft, and the vertical coaxial auxiliary device comprises a base, a middle column detachably connected to the top of the base, a top positioning shaft detachably connected to the upper end of the middle column, and a top positioning sleeve detachably connected to the top positioning shaft. The pitch reaming coaxial auxiliary device is connected with the pitch reaming hole of the portal-type bearing beam disassembled part by matching, so that the coaxiality of the pitch reaming hole of the portal-type bearing beam of the bucket wheel excavator is ensured; the vertical coaxial auxiliary device is connected with the rotation center of the discharge arm by matching, so that the coaxiality of the rotation center of the discharge arm and the rotation center of the receiving arm is ensured. The auxiliary device for installing the portal-type bearing beam can be reused after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of a bucket wheel excavator in the prior art; Figure 2 This is a diagram showing the use state of the auxiliary installation device for the portal bearing beam of a bucket wheel excavator according to an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the coaxial auxiliary device for pitch reaming in an embodiment of the present invention; Figure 4 is a schematic structural diagram of a vertical coaxial auxiliary device in an embodiment of the present invention; Figure 5 is a schematic diagram of a positioning shaft in an embodiment of the present invention; Figure 6 A schematic diagram of a connecting beam in an embodiment of the invention; Figure 7 It is a schematic diagram of the top positioning shaft in the embodiment of the invention; Figure 8 It is a schematic diagram of a center column in an embodiment of the invention; Explanation of the serial numbers in the figure: 1 pitch reaming coaxial auxiliary device, 11 positioning shaft, 12 connecting beam, 13 end positioning sleeve, 14 fastener group one, 2 vertical coaxial auxiliary device, 21 base, 22 center column, 23 top positioning shaft, 24 top positioning sleeve, 25 fastener group two, 3 door-type bearing beam, 31 first disintegration part, 32 second disintegration part, 33 third disintegration part, 34 fourth disintegration part, 4 unloading arm, 5 bucket wheel device, 6 receiving arm, 7 crawler walking mechanism. DETAILED DESCRIPTION

[0014] To make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1-Figure 8 The present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

[0015] The portal-type load-bearing beam 3 used in this embodiment is disassembled into four parts, namely, a first disassembled part 31, a second disassembled part 32, a third disassembled part 33 and a fourth disassembled part 34. This embodiment takes the portal-type load-bearing beam 3 as an example and assembles it using the auxiliary device of this embodiment. The auxiliary device includes a pitch reaming coaxial auxiliary device 1 for coaxially connecting the second disassembled part 32 and the third disassembled part 33 and a vertical coaxial auxiliary device 2 for coaxially connecting the first disassembled part 31 and the fourth disassembled part 34.

[0016] The pitch reaming coaxial auxiliary device 1 in this embodiment includes a positioning shaft 11, a connecting beam 12, an end positioning sleeve 13 and a fastener group 14, wherein the positioning shaft 11 is in the form of a stepped shaft, one end of which is a flange structure and the flange structure has a positioning hole. This embodiment uses two positioning shafts 11. Positioning bosses are respectively provided on the two end faces of the left end face and the right end face of the connecting beam 12, and the positioning bosses cooperate with the positioning holes of the flange end of the positioning shaft 11. The positioning bosses are inserted into the positioning holes of the flange end of the positioning shaft 11 to ensure the coaxiality of the positioning shaft 11 and the connecting beam 12. In this embodiment, one positioning shaft 11 is connected to the left end face of the connecting beam 12, and another positioning shaft 11 is connected to the right end face of the connecting beam 12. The two end faces of the connecting beam 12 are detachably connected to the flange end of the positioning shaft 11 through the fastener group 14. The end positioning sleeve 13 can also be detachably connected to the positioning shaft 11.

[0017] The vertical coaxial auxiliary device 2 of this embodiment includes a base 21, a middle column 22, a top positioning shaft 23 and a top positioning sleeve 24, wherein the lower end of the base 21 is a three-point support and the upper end is a flange with a first positioning hole. The lower end of the middle column 22 is provided with a lower flange with a first positioning boss and a second positioning hole, and the upper end of the middle column 22 is provided with an upper flange with a third positioning hole, and the first positioning boss is adapted to the first positioning hole on the base 21 to ensure the coaxiality of the middle column 22 and the base 21. The top positioning shaft 23 is in the form of a stepped shaft, and one end is a flange structure with a second positioning boss, wherein the second positioning boss is adapted to the second positioning hole on the middle column 2 to ensure the coaxiality between the upper end of the middle column 22 and the top positioning shaft 23. The first positioning boss at the lower end of the middle column 22 is inserted into the first positioning hole of the base 21 and fixed by a fastener group 25, and the second positioning boss of the hollow top positioning shaft 23 is inserted into the third positioning hole at the upper end of the middle column 22 and fixed by another fastener group 25.

[0018] The installation process of the auxiliary device for installing the portal-type load-bearing beam in this embodiment is as follows: The first part is the coaxial auxiliary device for the pitch reaming holes, wherein the coaxial pitch reaming holes refer to the coaxial pitch reaming holes on both sides connected to the receiving arm. When the gate-type load-bearing beam is installed, the two positioning shafts 11 are respectively inserted from the middle into the pitch reaming holes connected to the receiving arm and matched therewith. After being in place, the two ends of the connecting beam 12 are matched with the positioning shaft 11 through the positioning boss of the connecting beam 12 and the positioning hole at the flange end of the positioning shaft 11, so as to first ensure the coaxiality of the two positioning shafts, and then the connecting beam 12 and the positioning shaft 11 are connected and fixed by the fastener group 14 flange connection. After the positioning shaft 11 is connected through the connecting beam 12, the end positioning sleeve 13 is inserted from the outside of the pitch reaming hole, the inner hole of the end positioning sleeve 13 matches with the positioning shaft 11, and the cylindrical surface matches with the pitch reaming hole.

[0019] After the door-type load-bearing beam is installed, remove the end positioning sleeve 13, remove the fastener group 14, and remove the connecting beam 12 and the positioning shaft 11 respectively, and keep them for reuse.

[0020] The second part is the vertical coaxial auxiliary device. Vertical coaxiality refers to the coaxiality between the rotation center of the discharge arm and the rotation center of the receiving arm. When installing the portal bearing beam, first fix the base 21 on the reference plane perpendicular to the rotation center line of the receiving arm. The center of the base 21 is coaxial with the rotation center of the receiving arm. The top positioning shaft 23 is inserted into the rotation center hole from below the rotation center hole of the discharge arm to match it. The top positioning sleeve 24 is inserted from above the rotation center hole of the discharge arm to match it. The base 21 and the top positioning shaft 23 are connected through the center column 22. The connection is fixed by the positioning hole and the positioning boss, and the flange and fastener group 25.

[0021] After the door-type load-bearing beam is installed, the top positioning sleeve 24 is removed, the fastener group 25 is removed, and the top positioning shaft 23, the center column 22 and the base 21 are removed respectively for storage and reuse.

[0022] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An auxiliary device for installing a portal beam of a bucket wheel excavator, characterized in that , comprising a pitch reaming coaxial auxiliary device and a vertical coaxial auxiliary device, wherein the pitch reaming coaxial auxiliary device comprises: a positioning shaft, a connecting beam detachably connected to the positioning shaft, and an end positioning sleeve connected to one side of the positioning shaft; the pitch reaming coaxial auxiliary device makes the pitch reaming holes of the disassembled parts located on both sides of the receiving arm in the portal-type load-bearing beam coaxial; The vertical coaxial auxiliary device includes a base, a middle column detachably connected to the top of the base, a top positioning shaft detachably connected to the upper end of the middle column, and a top positioning sleeve detachably connected to the top positioning shaft; the vertical coaxial auxiliary device makes the disassembly part passing through the rotation center of the unloading arm and the disassembly part passing through the rotation center of the receiving arm in the gate-type load-bearing beam coaxial.

2. The auxiliary device for installing the portal beam of a bucket wheel excavator according to claim 1, characterized in that The positioning shaft is in the form of a stepped shaft, one end of which is a flange with a positioning hole; the left and right end surfaces of the connecting beam are respectively provided with positioning bosses that are adapted to the positioning holes on the positioning shaft, and the positioning bosses are inserted into the positioning holes to position the positioning shaft coaxially with the connecting beam.

3. The auxiliary device for installing the portal bearing beam of a bucket wheel excavator according to claim 3, characterized in that , after coaxial positioning, the positioning shaft and the connecting beam are fixed together through a firmware assembly.

4. The auxiliary device for installing the portal beam of a bucket wheel excavator according to claim 1, characterized in that A first flange with a first positioning hole is provided on the top of the base, a second flange with a first positioning boss and a first positioning hole is provided at the lower end of the middle column, a third flange with a second positioning hole is provided at the upper end of the middle column, and a fourth flange with a second positioning boss is provided at the lower end of the top positioning shaft. The first positioning boss is inserted into the first positioning hole to position the base coaxially with the lower end of the middle column, and the second positioning boss is inserted into the second positioning hole to position the upper end of the middle column coaxially with the top positioning shaft. The top positioning shaft is a stepped shaft structure, on which a top positioning sleeve is connected.

5. The auxiliary device for installing the portal beam of a bucket wheel excavator according to claim 4, characterized in that , after coaxial positioning, the base and the lower end of the middle column, the upper end of the middle column and the top positioning axis are fixed respectively through a second firmware group.

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