Fixed base structure assembly for electric steel grabber

Abstract

The application discloses a fixed base structure assembly for an electric steel grabbing machine, which comprises a fixed base and a rotary platform, the fixed base is connected with the rotary platform through a rotary bearing, a current collector is arranged between the fixed base and the rotary platform, a strength and rigidity reinforcing structure is arranged on the fixed base, the current collector comprises a stator and a rotor, the stator is connected with the rotary platform through a fourth light hole, and the rotor is connected with a rotor support assembly through a shift fork pin shaft. Through the strength and rigidity reinforcing, the application has high stability during operation, the rotary bearing part between the rotary platform and the fixed base no longer shakes and slightly swings, and through the new current collector fixing structure, the problems of difficult assembly and maintenance of the current collector are solved.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery, specifically to a fixed base structure assembly for an electric steel grabber. Background Technology

[0002] Steel grabbers evolved from hydraulic excavators. Their booms and arms are used for grabbing materials, and their attachments are steel grabbers (mainly grappling hooks, 3+2 grappling hooks, electromagnetic chucks, etc.). They are primarily suitable for grabbing, lifting, and loading scrap metal, industrial waste, and construction debris. Steel grabbers are classified by power configuration into fuel-powered and electric types, each equipped with a separate fuel engine and electric motor, respectively. They are also classified by operating range into mobile and stationary types. Mobile types are equipped with a traveling frame and move according to the work site; stationary types do not have a traveling frame and only have a fixed base for operation in a fixed position.

[0003] Due to limitations imposed by the operating environment and the structure of the fixed base, electric steel grabbers equipped with fixed bases experience vibration and slight swaying at the slewing bearing mounting location between the slewing platform and the fixed base during operation, affecting the service life of the slewing motor and the slewing bearing. Furthermore, the current collector located in the center of the fixed base is difficult to assemble and maintain.

[0004] Please see Figures 1 to 3 The conventional electric steel grabber fixed base structure assembly includes a fixed base 6, a rotary platform 1, and a collector 2. The fixed base 6 is connected to the rotary platform 1 through a rotary bearing 3. The collector 2 is divided into a stator and a rotor. The stator is connected to the rotary platform 1, and the rotor is connected to the mounting pin hole 8 on the collector fixed base 7 through a pull-in pin shaft 15. The collector fixed base 7 is a bent plate with reinforcing plates 10 on both sides at the lower part. The reinforcing plates 10 are connected to the fixed base 6 by welding.

[0005] This fixed base structure assembly has two shortcomings:

[0006] On the one hand, the structure is weak. When the steel grabber is in operation, the slewing bearing 3 between the slewing platform 1 and the fixed base 6 vibrates and sways slightly, resulting in poor stability during operation.

[0007] On the other hand, the rotary platform 1 is heavy and bulky. The stator of the current collector 2 is fixed on the upper part of the rotary platform. When the rotary platform 3 and the fixed base 6 are assembled together, it is difficult to align and assemble the fork pin 15 at the bottom of the rotor actuation disk 16 with the mounting pin hole 8 on the current collector fixed base 7. This is time-consuming, labor-intensive, and extremely inefficient. Summary of the Invention

[0008] To address the aforementioned deficiencies in existing technologies, this invention provides a fixed base structure assembly for an electric steel grabber. On one hand, it reasonably enhances the structural strength and rigidity, improving the stability of the fixed base. On the other hand, it optimizes the assembly layout structure of the actuation disc fork pin and the current collector mounting base to facilitate the assembly and maintenance of the current collector.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] An electric steel grabber uses a fixed base structure assembly, including a fixed base and a rotating platform. The fixed base and the rotating platform are connected by a slewing bearing. A current collector is installed between the fixed base and the rotating platform. The fixed base includes a support ring. A slewing bearing mounting plate is provided at the upper end of the support ring, and a base is provided at the lower end. Inspection holes and wiring holes are provided on the side walls. A second light hole is provided on the slewing bearing mounting plate, and a third light hole is provided on the base.

[0011] Its characteristic is that the fixed base is provided with a strength and stiffness enhancement structure;

[0012] The strength and stiffness enhancement structure consists of several stiffening plates installed between the base of the fixed base and the support ring.

[0013] A reinforcing ring is provided around the inspection hole on the support ring;

[0014] A partition ring is provided on the inner side of the support ring above the inspection hole;

[0015] Multiple vertical ribs are provided on the inner side of the support ring. The lower end of the ribs is connected to the base and the upper end is connected to the partition ring.

[0016] The vertical ribs on both sides of the inspection hole are provided with a second rib below the inspection hole.

[0017] No reinforcing ribs are provided in the area between the partition ring and the slewing bearing mounting plate;

[0018] The reinforcing ring is equipped with an inspection hole cover plate;

[0019] A U-shaped handle is provided on the inspection hole cover;

[0020] The current collector includes a stator and a rotor;

[0021] The rotor includes a hollow drive shaft and a dial plate disposed at the lower end of the hollow drive shaft. The dial plate is provided with a fork pin, and the bottom of the hollow drive shaft is a second cable threading hole.

[0022] The stator has a fourth optical hole at the bottom and a rotor mounting hole at the bottom, and a first cable threading hole at the upper end of the side wall.

[0023] The current collector stator is connected to the rotary platform through the fourth optical hole, and the rotor is connected to the rotor support assembly through the shift fork pin.

[0024] The rotor support assembly includes a mounting bracket and a fixing plate disposed below the mounting bracket;

[0025] The mounting bracket is an inverted U-shaped bracket, with connecting holes on the U-shaped legs for connecting to the fixing plate, and a wiring groove on the top.

[0026] Thickened pin holes are provided on both sides of the wiring groove, the fixing plate is bent into an open trapezoid, and mounting holes are provided at both ends of the top of the fixing plate;

[0027] The separator ring is provided with corresponding mounting holes for the fixing plate.

[0028] The trapezoidal wing of the fixing plate is provided with a wire clamp;

[0029] The clamp secures the external input cable, which passes through the second cable hole into the collector. The electrical cable on the rotating platform enters the collector from the first cable hole. The input cable and the electrical cable are connected by a rotating wire connector.

[0030] The input cable and the electrical cable are connected via a brush holder and a brush.

[0031] The pressure clamps are provided on both wings of the trapezoid, two on each wing;

[0032] The fixed seat and the fixed base are connected by a third thickened washer and a third extended bolt. The fixed base and the slewing bearing are connected by a second thickened washer and a second extended bolt. The slewing bearing is connected by a first thickened washer and a first extended bolt.

[0033] The current collector stator is connected to the rotary platform by a first washer and a first bolt. The inspection hole cover plate is connected to the inspection hole reinforcing ring by a second washer and a second bolt. The current collector rotor is connected to the mounting bracket by inserting a shift fork pin into a thickened pin hole. The mounting bracket is connected to the fixing plate by a third washer and a third bolt. The fixing plate is connected to the fixing base by a fourth washer and a fourth bolt. The wire clamp is fixed to the two wings of the fixing plate by a fifth washer and a fifth bolt.

[0034] 1) The overall structure should be reasonably reinforced, and a reasonable buffer zone should be left to allow for stress release;

[0035] 2) Use thickened washers and extended bolts to tighten the lower and upper parts of the base respectively, thereby improving the tensile strength and yield strength of the bolts, providing buffer protection for the extended bolts, and extending the service life of the extended bolts;

[0036] 3) High stability during operation; the slewing bearing between the slewing platform and the fixed base no longer vibrates or sways.

[0037] 4) It solved the problem of difficult assembly and maintenance of current collectors. Attached Figure Description

[0038] Figure 1 This is a structural diagram of a fixed base structure assembly for a conventional electric steel grabber.

[0039] Figure 2 yes Figure 1 Schematic diagram of the fixed base structure;

[0040] Figure 3 yes Figure 1 CIMC Electric Structure Diagram;

[0041] Figure 4 This is a schematic diagram of the fixed base structure assembly for the electric steel grabber of the present invention;

[0042] Figure 5 This is the present invention. Figure 4 Schematic diagram of the fixed base structure;

[0043] Figure 6 This is the present invention. Figure 4 A schematic diagram of the fixed base from another angle;

[0044] Figure 7 This is the present invention. Figure 4 CIMC Electric Installation Diagram;

[0045] Figure 8 This is a schematic diagram of the installation of the current collector and rotor support assembly of the present invention;

[0046] Figure 9 This is a schematic diagram of the rotor support assembly structure of the present invention.

[0047] Figures 4 to 9Part Numbers: 1. First Washer; 2. First Bolt; 3. Rotary Platform; 4. Current Collector; 5. Rotary Bearing; 6. First Thickened Washer; 7. First Extended Bolt; 8. Second Thickened Washer; 9. Second Extended Bolt; 10. Fixed Base; 11. Third Thickened Washer; 12. Third Extended Bolt; 13. Fixed Seat; 14. Inspection Hole; 15. Support Ring; 16. Rotary Bearing Mounting Plate; 17. Second Through Hole; 18. Base; 19. Third Through Hole; 20. Cable Through Hole; 21. First Cable Through Hole; 22. Hollow Transmission 23. Shaft; 24. Fourth light hole; 25. Shift fork pin shaft; 26. Second cable threading hole; 27. Actuating disc; 28. Separator ring; 29. ​​Rib plate; 30. Inspection hole reinforcement ring; 31. Rib plate; 32. Threaded hole; 33. Second rib plate; 34. Inspection hole cover plate; 35. Second washer; 36. Second bolt; 37. Mounting bracket; 38. Fixing plate; 39. Third washer; 40. Third bolt; 41. Cable clamp; 42. Fourth washer; 43. Fifth washer; 44. Fifth bolt; 45. Thickened pin hole. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0049] Please see Figures 4 to 6 An electric steel grabber fixed base structure assembly includes a fixed base 10 and a rotating platform 3. The fixed base 10 and the rotating platform 3 are connected by a slewing bearing 5. A current collector 4 is installed between the fixed base 10 and the rotating platform 3. The relay 4 is a transfer station for connecting the external power grid to the electrical system on the upper part of the rotating platform 3 via the lower fixed base 10. The fixed base 10 is provided with a strength and rigidity enhancement structure.

[0050] The fixed base 10 includes a support ring 15. The upper end of the support ring 15 is provided with a slewing bearing mounting plate 16, and the lower end is provided with a base 18. The side wall is provided with an inspection hole 14 and a wire hole 20. The slewing bearing mounting plate 16 is provided with a second light hole 17 for connecting with the slewing bearing 5. The base 18 is provided with a third light hole 19 for connecting with the fixed base 13. The inspection hole 14 is used for the installation of the current collector 4 inside the fixed base 10, as well as the connection and maintenance of the external power grid transmission cable.

[0051] The strength and stiffness enhancement structure is provided by setting several stiffening plates 30 between the base 18 and the support ring 15 of the fixed base 10 to improve the strength and stiffness of the lower part of the fixed base 10. The stiffening plates 30 are arranged to avoid the third light hole 19.

[0052] A reinforcing ring 29 is provided around the inspection hole 14 on the support ring 15 to enhance the structural strength of the outer side of the inspection hole 14. An inspection hole cover plate 33 is provided on the reinforcing ring 29 to prevent dust from entering the interior of the fixed base body and to ensure the cleanliness of the interior of the fixed base, so as to avoid premature corrosion and damage to the internal electrical components. On the other hand, the inspection hole cover plate 33 further enhances the strength around the inspection hole after installation. A partition ring 27 is provided on the inner side of the support ring 15 above the inspection hole 14.

[0053] Multiple vertical ribs 28 are provided on the inner side of the support ring 15. The lower end of the ribs 28 is connected to the base 18 and the upper end is connected to the partition ring 27. Ribs 28 are provided on both sides of the inspection hole 14. A second rib 32 is provided below the inspection hole 14. The second rib 32, the ribs 28 and the partition ring 27 form a frame-shaped reinforcing structure relative to the inspection hole 14, which enhances the strength and rigidity of the periphery of the inspection hole 14, and at the same time improves the overall strength and rigidity of the fixed base 10.

[0054] There is an unreinforced area A between the separator ring 27 and the slewing bearing mounting plate 18. This area is not reinforced to ensure that it has appropriate buffering and toughness, so that it can play a buffering role when faced with a huge instantaneous impact, thereby protecting the slewing bearing 5 and the fixed base 10.

[0055] The inspection hole cover 33 is equipped with a U-shaped handle. The inspection hole cover 33 has a large external size and heavy weight. The addition of the U-shaped handle makes it easier to install the cover and improves the safety of operators when installing and removing the cover.

[0056] Specifically, the fixed seat 13 is connected to the fixed base 10 through the third thickened washer 11 and the third extended bolt 12, the fixed base 10 is connected to the slewing bearing 5 through the second thickened washer 8 and the second extended bolt 9, and the slewing bearing 5 is connected through the first thickened washer 6 and the first extended bolt 7. The thickened washer and the extended bolt have higher tensile strength and yield strength, which can improve the strength and stability of the structure. Example 2

[0057] Please see Figure 4 and Figures 7 to 9The current collector 4 includes a stator and a rotor. The rotor includes a hollow drive shaft 22 and a dial 26 disposed on the hollow drive shaft 22. The bottom of the hollow drive shaft 22 is a second cable threading hole 25. The dial 26 is provided with a fork pin 24. The bottom of the stator is provided with a fourth light hole 23 for connecting with the rotary platform 3. The bottom is also provided with a rotor mounting hole, and the upper end is provided with a first cable threading hole 21. The hollow drive shaft 22 of the rotor is installed in the rotor mounting hole to complete the assembly of the current collector 4.

[0058] The upper stator of the current collector 4 is connected to the rotary platform 3 through the fourth light hole 23, and the rotor is connected to the rotor support assembly through the shift fork pin 24.

[0059] The rotor support assembly includes a mounting bracket 36 and a fixing plate 37 disposed below the mounting bracket 36. The mounting bracket 36 is an inverted U-shaped bracket. The U-shaped legs of the mounting bracket 36 are provided with connection holes for connection to the fixing plate 37. The top is provided with a wiring groove to provide space for the wiring holes. Thickened pin holes 45 are provided on both sides of the wiring groove for connection to the shift fork pin 24 in the rotor. The thickened pin holes increase the connection strength. The fixing plate 37 is bent into an open trapezoid. The top two ends of the fixing plate 37 are provided with mounting holes. The partition ring 27 is provided with corresponding fixing plate mounting holes 31. The trapezoidal wings of the fixing plate 37 are provided with wire clamps 40 for fixing the external input cable to prevent the cable from shaking and causing the joint connection to loosen and cause failure. The wire clamps 40 are provided on both wings of the trapezoid, two on each wing, so as to adjust the layout of the cable according to actual needs.

[0060] Specifically, the stator of the current collector 4 is connected to the rotary platform 3 via a first washer 1 and a first bolt 2; the inspection hole cover 33 is connected to the inspection hole reinforcing ring 29 via a second washer 34 and a second bolt 35; the rotor of the current collector 4 is connected to the mounting bracket 36 via a shift fork pin 24 inserted into a thickened pin hole 45; the mounting bracket 36 is connected to the fixing plate 37 via a third washer 38 and a third bolt 39; the fixing plate 37 is connected to the fixing base 10 via a fourth washer 41 and a fourth bolt 42; and the wire clamp 40 is fixed to the two wings of the fixing plate 37 via a fifth washer 43 and a fifth bolt 44.

[0061] Combining the two embodiments, during assembly, first assemble the mounting bracket 36 and the fixing plate 37 together to form the rotor bracket assembly, assemble the stator and rotor of the current collector 4 together, then install the current collector 4 on the rotary platform 3, and then assemble the fixing seat 13, the fixing base 10, the slewing bearing 5, and the rotary platform 3 in sequence. Finally, insert the rotor bracket assembly into the fixing base 10 through the inspection hole 14, align the thickened pin hole 45 on the mounting bracket 36 with the shift fork pin shaft 24 on the shift disk 26, and complete the assembly. Finally, fix the rotor bracket assembly to the fixing base 10 through the threaded hole 31 on the partition ring 27.

[0062] The external input cable is fixed by the clamp 40 and passed through the second cable hole 25 into the collector 4. The electrical cable on the rotating platform 3 enters the collector 4 through the first cable hole 21. The input cable and the electrical cable are connected by a rotating wire connector.

[0063] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0064] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fixed base structure assembly for an electric steel grabbing machine, comprising a fixed base and a rotating platform, the fixed base and the rotating platform being connected through a rotary support, and a current collector being installed between the fixed base and the rotating platform; the fixed base comprises a support ring, the upper end of the support ring is provided with a rotary support mounting seat plate, the lower end is provided with a base, the side wall is provided with an inspection hole and a threading hole, the rotary support mounting seat plate is provided with a second light hole, and the base is provided with a third light hole; characterized in that the fixed base is provided with a strength and rigidity enhancing structure; the strength and rigidity enhancing structure comprises a plurality of rib plates arranged between the base and the support ring of the fixed base; a reinforcing ring is arranged around the inspection hole on the inner side of the support ring; a partition ring is arranged above the inspection hole on the inner side of the support ring; a plurality of vertical rib plates are arranged on the inner side of the support ring, the lower end of the rib plate is connected with the base, and the upper end is connected with the partition ring; second rib plates are arranged below the inspection hole on both sides of the rib plate.

2. The fixed base structure assembly for electric steel grasping machine as claimed in claim 1 wherein, No reinforcing rib is arranged between the partition ring and the rotary support mounting seat plate.

3. The fixed base structure assembly for electric steel grasping machine as claimed in claim 2 wherein, A cover plate is arranged on the reinforcing ring.

4. The fixed base structure assembly for electric steel grasping machine as claimed in claim 3 wherein, A U-shaped handle is arranged on the cover plate of the inspection hole.

5. The fixed base structure assembly for electric steel grasping machine as claimed in claim 4 wherein, the current collector comprises a stator and a rotor; the rotor comprises a hollow transmission shaft, a dial plate arranged at the lower end of the hollow transmission shaft, a shift fork pin shaft arranged on the dial plate, and a second cable threading hole arranged at the bottom of the hollow transmission shaft; the stator is provided with a fourth light hole at the bottom, a rotor mounting hole is further arranged at the bottom, and a first cable threading hole is arranged at the upper end of the side wall.

6. The fixed base structure assembly for electric steel grasping machine as claimed in claim 5 wherein, The stator of the current collector is connected with the rotating platform through the fourth light hole, and the rotor is connected with the rotor support assembly through the shift fork pin shaft.

7. The fixed base structure assembly for electric steel grasping machine as claimed in claim 6 wherein, The rotor support assembly comprises a mounting bracket and a fixing plate arranged below the mounting bracket; the mounting bracket is a reverse U-shaped bracket, the U-shaped leg of the mounting bracket is provided with a connecting hole connected with the fixing plate, and a wiring slot is arranged at the top; thickened pin holes are arranged on both sides of the wiring slot, the fixing plate is bent into an open trapezoidal shape, and mounting holes are arranged at both ends of the top of the fixing plate; corresponding fixing plate mounting holes are arranged on the partition ring; a wire pressing clamp is arranged on the trapezoidal wing of the fixing plate.

8. The fixed base structure assembly for electric steel grasping machine as claimed in claim 7 wherein, The external input cable is fixed by the wire pressing clamp, passes through the second cable threading hole into the current collector, the electric cable passes into the current collector from the first cable threading hole on the rotating platform, and the input cable and the electric cable are connected through a rotating wire joint.

9. The fixed base structure assembly for electric steel grasping machine as claimed in claim 8 wherein, The input cable and the electric cable are connected through a brush holder and an electric brush.

10. The fixed base structure assembly for electric steel grasping machine as claimed in claim 7 wherein, The wire pressing clamp is arranged on both wings of the trapezoidal shape, and two wire pressing clamps are arranged on one wing. The fixing plate and the fixed base are connected through a third thickened washer and a third lengthened bolt, the fixed base and the rotary support are connected through a second thickened washer and a second lengthened bolt, and the rotary support and the rotating platform are connected through a first thickened washer and a first lengthened bolt. The current collector stator is connected with the slewing platform through a first gasket and a first bolt, the access hole cover plate is connected with the access hole reinforcing ring through a second gasket and a second bolt, the rotor of the current collector is connected with the mounting support through the insertion of the fork pin shaft into the thickened pin hole, the mounting support is connected with the fixed plate through a third gasket and a third bolt, the fixed plate is connected with the fixed base through a fourth gasket and a fourth bolt, and the wire pressing clamp is fixed on the two wings of the fixed plate through a fifth gasket and a fifth bolt.

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