Low-stress movable arm connecting support of excavator platform

Abstract

The utility model discloses a low-stress movable arm connecting support for an excavator platform, which belongs to the technical field of excavators and comprises a bottom plate, vertical plates symmetrically and vertically mounted on two sides of the top of the bottom plate, a rib plate obliquely mounted between the two groups of vertical plates and lug plates mounted at two ends of the bottom of the rib plate. A worm gear is rotationally installed in the annular shell, and a worm is installed on the outer side of the worm gear in a meshed mode. The rotary fastening mechanism composed of the annular shell, the worm gear, the worm, the gear blocks, the gears and the threaded holes is arranged at the top of the bottom plate, rotation of the multiple sets of gears inside can be controlled at the same time in the installation process, the gears are screwed to the ends of the bolts, traditional nuts are replaced, installation is convenient, and the service life of the bolts is prolonged. And meanwhile, self-locking can be carried out in a transmission mode between the worm gear and the worm, the gear cannot rotate automatically to cause looseness, the limiting effect on the bolt is better, and the installation stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to a boom connection support, in particular to a low-stress boom connection support for an excavator platform, and belongs to the technical field of excavators. Background Art

[0002] The excavator boom support is a supporting component connecting the excavator boom and the frame. Its main function is to bear the weight of the boom and the digging force. At present, during the installation process, bolts are mostly used to fix the support and the excavator platform, which is inconvenient to install and disassemble. In addition, since the excavator will be shaken to a certain extent during use, the bolts and nuts are prone to loosening after long-term use, affecting the stability of the installation. In addition, it is inconvenient to lubricate the shaft rod during use, which increases the wear during use.

[0003] Therefore, a low-stress boom connection support for an excavator platform is designed to optimize the above-mentioned problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a low-stress boom connecting support for an excavator platform. By providing a rotating fastening mechanism composed of an annular shell, a worm wheel, a worm, a tooth block, a gear and a threaded hole on the top of the base plate, the rotation of multiple sets of internal gears can be controlled simultaneously during the installation process, and the gears can be tightened to the ends of the bolts, replacing the use of traditional nuts. Not only is the installation convenient, but the transmission mode between the worm wheel and the worm can be self-locking, the gears will not rotate and cause looseness, the limiting effect on the bolts is better, and the stability of the installation is guaranteed. By providing a reinforcing plate at the position of the shaft hole on the side of the vertical plate, the stability of the connection part is guaranteed. In addition, when used in conjunction with a through pipe, an addition port and a lubrication hole, the inside of the shaft hole can be lubricated conveniently, the wear on the inside of the shaft hole during use is reduced, and the service life of the device is increased.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A low-stress boom connection support for an excavator platform comprises a base plate, vertical plates symmetrically mounted on both sides of the top of the base plate, rib plates obliquely mounted between the two sets of vertical plates, and ear plates mounted on both ends of the bottom of the rib plates. An annular shell is provided on the top of the base plate, a worm wheel is rotatably mounted inside the annular shell, a worm is meshingly mounted on the outside of the worm wheel, the worm is rotatably mounted inside the annular shell, tooth blocks are uniformly fixed on the inner side of the worm wheel along the circumferential direction, gears meshing with the tooth blocks are uniformly rotatably mounted inside the annular shell, and threaded holes are provided at the middle positions of the gears.

[0007] Preferably: limiting blocks are evenly fixed on the inner side wall of the annular shell along the circumferential direction, arc grooves are formed on the inner sides of the limiting blocks, and the gears are located inside the arc grooves.

[0008] Preferably, one end of the worm extends to the outside of the annular housing, and a straight groove is provided at the end of the worm.

[0009] Preferably, a locking screw is threadedly mounted on the top of the annular housing and located above the worm.

[0010] Preferably: reinforcing plates are welded and fixed to the ends of the shaft holes on the vertical plates, and a lubricating oil adding mechanism is provided between the reinforcing plates between the two sets of vertical plates.

[0011] Preferably: the lubricating oil adding mechanism comprises a through pipe, an adding port and a lubrication hole, the through pipe is fixed between two sets of reinforcing plates, the top of the through pipe is provided with an adding port, the inside of the reinforcing plate is provided with a lubrication hole at a position aligned with the shaft hole, and the through pipe is connected to the lubrication hole.

[0012] The beneficial effects of the utility model are:

[0013] The utility model provides a low-stress boom connection support for an excavator platform. By providing a rotating fastening mechanism composed of an annular housing, a worm wheel, a worm, a tooth block, a gear and a threaded hole on the top of the bottom plate, the rotation of multiple sets of gears inside can be controlled at the same time during the installation process, and the gears are tightened on the ends of the bolts, replacing the use of traditional nuts. Not only is the installation convenient, but the transmission method between the worm wheel and the worm can be self-locking, the gears will not rotate by themselves and cause looseness, the limiting effect on the bolts is better, and the stability of the installation is guaranteed.

[0014] By providing a reinforcing plate at the position of the shaft hole on the side of the vertical plate, the stability of the connection part is ensured. In addition, when used in conjunction with a through pipe, an addition port and a lubrication hole, the inside of the shaft hole can be lubricated conveniently, reducing the wear on the inside of the shaft hole during use and increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a top cross-sectional view of the annular housing of the utility model;

[0017] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 For the utility model Figure 1 Enlarged view of point B in the middle.

[0019] In the figure: 1. bottom plate; 2. vertical plate; 3. rib plate; 4. ear plate; 5. annular housing; 6. worm gear; 7. worm; 8. tooth block; 9. gear; 10. threaded hole; 11. limit block; 12. reinforcement plate; 13. through pipe; 14. addition port; 15. lubrication hole. DETAILED DESCRIPTION

[0020] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0021] like Figure 1-Figure 4 As shown, this embodiment provides a low-stress boom connection support for an excavator platform, including a base plate 1, vertical plates 2 symmetrically and vertically installed on both sides of the top of the base plate 1, a rib plate 3 obliquely installed between the two groups of vertical plates 2, and ear plates 4 installed at both ends of the bottom of the rib plate 3. An annular shell 5 is provided on the top of the base plate 1, a worm gear 6 is rotatably installed inside the annular shell 5, a worm 7 is meshingly installed on the outer side of the worm gear 6, and the worm 7 is rotatably installed inside the annular shell 5, a tooth block 8 is evenly fixed on the inner side of the worm gear 6 along the circumferential direction, a gear 9 meshing with the tooth block 8 is evenly rotatably installed inside the annular shell 5, and a threaded hole 10 is opened at the middle position of the gear 9.

[0022] The overall working principle: during the installation process, the base plate 1 is attached to the top of the excavator platform, and the mounting holes on the base plate 1 are aligned with the mounting holes on the excavator platform, and then the bolts are inserted into the bottom of the excavator, passed through the mounting holes and aligned with the threaded holes 10 at the center of the gear 9, and then the worm 7 is rotated to control the worm wheel 6 to rotate. The rotation of the worm wheel 6 simultaneously controls the rotation of multiple sets of gears 9. The gear 9 will be tightened onto the bolt to complete the fixation of the base plate 1. In addition, the annular shell 5 will protect the top of the bolt to prevent rain erosion and facilitate disassembly and assembly. After fixation, the worm wheel 6 and the worm 7 can be self-locking, and the gear 9 will not rotate by itself and loosen. It can only be rotated and controlled by the worm 7. Even if the excavator is shaking, if you want to control the rotation of the worm 7, you need to overcome the resistance between the multiple sets of gears 9 and the bolts. Therefore, the installation stability of the device is higher.

[0023] In this embodiment, the limiting blocks 11 are evenly fixed on the inner side wall of the annular housing 5 along the circumferential direction, and the inner sides of the limiting blocks 11 are all provided with arc grooves, and the gears 9 are located inside the arc grooves.

[0024] Local working principle: The setting of the limit block 11 limits the position of the gear 9 to ensure the stability of the position of the gear 9.

[0025] In this embodiment, one end of the worm 7 extends to the outside of the annular housing 5 , and a straight groove is formed at the end of the worm 7 .

[0026] Partial working principle: When controlling the rotation of the worm 7, insert a flat-head screwdriver into the flat-head groove at the end of the worm 7 to control the rotation, which is more convenient to use.

[0027] In this embodiment, a locking screw is threadedly mounted on the top of the annular housing 5 and above the worm 7 .

[0028] Partial working principle: After the installation of the base plate 1 is completed, the locking screw is tightened to reposition the position of the worm 7 to ensure the stability of the worm 7.

[0029] In this embodiment, the ends of the shaft holes on the vertical plates 2 are all welded and fixed with reinforcing plates 12 , and a lubricating oil adding mechanism is provided between the reinforcing plates 12 between the two sets of vertical plates 2 .

[0030] Partial working principle: By using a reinforcing plate 12 on the outside of the axial hole of the vertical plate 2, the strength of the axial hole is improved, which effectively avoids the vertical plate 2 from cracking and deformation, and increases the service life.

[0031] In this embodiment, the lubricating oil adding mechanism includes a through pipe 13, a adding port 14 and a lubrication hole 15. The through pipe 13 is fixed between two sets of reinforcing plates 12. The top of the through pipe 13 is provided with a adding port 14. The inside of the reinforcing plate 12 is provided with a lubrication hole 15 at a position aligned with the shaft hole. The through pipe 13 and the lubrication hole 15 are connected.

[0032] Partial working principle: When lubrication is required inside the shaft hole, the lubricating oil is injected from the addition port 14, and the lubricating oil enters the interior of the shaft hole through the through pipe 13 and the lubrication hole 15. Lubrication can be performed without disassembling the device, which is easy to operate and highly practical.

[0033] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A low-stress boom connection support for an excavator platform, comprising a base plate (1), vertical plates (2) symmetrically and vertically mounted on both sides of the top of the base plate (1), a rib plate (3) obliquely mounted between the two groups of vertical plates (2), and ear plates (4) mounted on both ends of the bottom of the rib plate (3), characterized in that: An annular housing (5) is provided on the top of the bottom plate (1). A worm wheel (6) is rotatably mounted inside the annular housing (5). A worm (7) is meshingly mounted on the outer side of the worm wheel (6). The worm (7) is rotatably mounted inside the annular housing (5). A tooth block (8) is evenly fixed along the circumferential direction on the inner side of the worm wheel (6). A gear (9) meshing with the tooth block (8) is evenly rotatably mounted inside the annular housing (5). A threaded hole (10) is provided at the middle position of each gear (9).

2. The low stress boom connection support for an excavator platform according to claim 1, characterized in that: Limiting blocks (11) are evenly fixed on the inner side wall of the annular housing (5) along the circumferential direction, arc grooves are formed on the inner sides of the limiting blocks (11), and the gears (9) are located inside the arc grooves.

3. The low stress boom connection support for an excavator platform according to claim 1, characterized in that: One end of the worm (7) extends to the outside of the annular housing (5), and a straight groove is formed at the end of the worm (7).

4. The low stress boom connection support for an excavator platform according to claim 3, characterized in that: A locking screw is threadedly mounted on the top of the annular housing (5) and located above the worm (7).

5. The low stress boom connection support for an excavator platform according to any one of claims 1 to 4, characterized in that: The ends of the shaft holes on the vertical plates (2) are all welded and fixed with reinforcing plates (12), and a lubricating oil adding mechanism is provided between the reinforcing plates (12) between the two sets of vertical plates (2).

6. The low stress boom connection support for an excavator platform according to claim 5, characterized in that: The lubricating oil adding mechanism comprises a through pipe (13), an adding port (14) and a lubricating hole (15); the through pipe (13) is fixed between two sets of reinforcing plates (12); the top of each through pipe (13) is provided with an adding port (14); the inside of each reinforcing plate (12) is provided with a lubricating hole (15) at a position aligned with the shaft hole; the through pipe (13) and the lubricating hole (15) are connected.

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