Supporting structure for transmission of lower frame body of excavator

Abstract

The utility model provides a support structure for transmission of a lower frame body of an excavator, which relates to the field of excavators, and comprises two side beam frames, a middle frame is arranged between the two side beam frames, a mounting seat is arranged in the middle of the middle frame, a turntable component is arranged on the mounting seat, and the turntable component is connected with the side beam frames. The rotating disc assembly is composed of an internally-arranged gear ring and an externally-arranged disc ring. Through ingenious matching of the positioning columns and the positioning grooves and the clamping heads and the clamping grooves, a traditional multi-bolt positioning mode is abandoned, the positioning columns only need to be aligned with the positioning grooves to be inserted in the installation process, the clamping heads are automatically clamped into the clamping grooves through the elastic force of the springs, primary positioning and fixing of the rotating disc assembly and the installation base can be completed, installation steps are effectively reduced, and installation efficiency is improved. A large amount of mounting and positioning time is saved; the arc-shaped bealock of the back shore seat is matched with the pull ring, a pinch bar is used as a tool, the clamping head can be easily withdrawn from the clamping groove according to the simple lever principle, and separation of the positioning column and the positioning groove is completed.

Description

Technical Field

[0001] This utility model relates to the field of excavators, and in particular to a support structure for the transmission of the undercarriage frame of an excavator. Background Technology

[0002] In modern engineering construction, excavators, as important pieces of machinery, have a crucial impact on project progress and quality due to their performance and reliability. The undercarriage frame drive support structure, as one of the core components of the excavator, plays a vital role in transmitting power, supporting the superstructure, and ensuring stable operation of the equipment.

[0003] Currently, when installing or replacing the turntable assembly in the traditional excavator underframe transmission support structure, four positioning bolts are usually pre-installed at the cross position for positioning. In actual installation, the bolt positions and tightness need to be repeatedly adjusted, which is cumbersome and time-consuming. It also requires a high level of technical proficiency from the installers, resulting in low overall assembly efficiency and increased labor and time costs.

[0004] Therefore, it is necessary to provide a new support structure for the transmission of the excavator undercarriage frame to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a support structure for the transmission of the undercarriage frame of an excavator.

[0006] This utility model provides a support structure for the transmission of the undercarriage of an excavator, comprising: two side beams, a central frame between the two side beams, a mounting seat at the center of the central frame, a turntable assembly on the mounting seat, the turntable assembly consisting of an inner gear ring and an outer disc ring, both the inner gear ring and the outer disc ring having multiple bolt holes; and an auxiliary mounting mechanism, comprising two positioning posts, the two positioning posts being fixedly connected to the lower side wall of the inner gear ring respectively, the mounting seat having two positioning grooves, two embedded grooves aligned on the outer sides of the two positioning grooves, slots on both sides of the outer walls of the two positioning posts, and locking components in the two embedded grooves.

[0007] Preferably, the two positioning posts are symmetrically arranged, the two positioning slots are symmetrically arranged, and the two positioning posts are slidably connected to the two positioning slots respectively.

[0008] Preferably, the locking assembly includes a slide rod disposed inside the recessed groove. One end of the slide rod is fixedly connected to a locking head. A top plate is provided on the slide rod, which is disposed inside the recessed groove. A spring is sleeved and connected to the slide rod. One end of the spring is connected to the top plate, and the other end of the spring is connected to the inner wall of one end of the recessed groove.

[0009] Preferably, both ends of the embedded groove are provided with through openings, and a receiving opening is provided between one end of the through opening and the groove wall of the positioning groove. The two ends of the slide rod are slidably connected to the two through openings, and the clip is located at the receiving opening.

[0010] Preferably, a pull ring is fixedly connected to one end of the slide rod.

[0011] Preferably, a top support is provided below the through-hole at the other end, and an arc-shaped archway is provided in the middle of the top support.

[0012] Compared with related technologies, the support structure for the transmission of the undercarriage of an excavator provided by this utility model has the following advantages:

[0013] 1. This utility model, through the ingenious cooperation of positioning pin and positioning groove, and clamp head and clamp slot, abandons the traditional multi-bolt positioning method. During installation, simply align the positioning pin with the positioning groove and insert it. Relying on the spring force, the clamp head will automatically clamp into the clamp slot, which can complete the initial positioning and fixing of the turntable assembly and the mounting base. This effectively reduces the installation steps, saves a lot of installation and positioning time, and eliminates the need to pre-install four positioning bolts for positioning and initial trial positioning, which significantly improves the overall assembly efficiency and reduces labor costs.

[0014] 2. This utility model utilizes the arc-shaped opening of the top support base and the pull ring, along with a pry bar, to easily remove the clip from the slot using a simple lever principle, thus separating the positioning post from the positioning slot. Compared to traditional disassembly methods, it eliminates the need for complex tools and extensive disassembly of components, reducing the operational difficulty for workers. Furthermore, it avoids damage to components caused by forceful disassembly or complex operations, reduces the frequency of component replacement, extends equipment lifespan, and lowers equipment maintenance costs for enterprises. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of this utility model;

[0016] Figure 2 for Figure 1 An exploded view of a preferred embodiment is shown below;

[0017] Figure 3 for Figure 2 The diagram shows the structure at point A.

[0018] Figure 4 for Figure 2 The diagram shows the structure at point B.

[0019] The following are the labels in the diagram: 1. Side beam frame; 2. Mid-mounted frame; 3. Mounting seat; 4. Internal gear ring; 41. External disc ring; 5. Positioning post; 51. Positioning groove; 52. Embedded groove; 53. Slide rod; 54. Clip; 55. Spring; 6. Pull ring; 7. Top support seat. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figures 1 to 4 A support structure for the transmission of the undercarriage of an excavator includes: two side beams 1, a central frame 2 between the two side beams 1, a mounting seat 3 at the middle position of the central frame 2, a turntable assembly on the mounting seat 3, the turntable assembly consisting of an inner gear ring 4 and an outer disc ring 41, both the inner gear ring 4 and the outer disc ring 41 having multiple bolt holes; an auxiliary installation mechanism including two positioning posts 5, the two positioning posts 5 being fixedly connected to the lower side wall of the inner gear ring 4 respectively, the mounting seat 3 having two positioning grooves 51, two inner grooves 52 aligned on the outer sides of the two positioning grooves 51, slots on both sides of the outer walls of the two positioning posts 5, and locking components in both inner grooves 52.

[0022] In the specific implementation process, such as Figure 2 and Figure 3 As shown, two positioning posts 5 are symmetrically arranged, and two positioning slots 51 are symmetrically arranged. The two positioning posts 5 are slidably connected to the two positioning slots 51 respectively.

[0023] It should be noted that the symmetrical arrangement of the two positioning posts 5 and the positioning groove 51 ensures that the turntable assembly is subjected to uniform force during installation, avoiding installation deviation due to uneven force. At the same time, the sliding connection provides precise guidance for the positioning posts 5 to be inserted into the positioning groove 51, enabling the positioning posts 5 to reach the predetermined position quickly and accurately, laying the foundation for the subsequent engagement of the locking head 54 with the locking groove.

[0024] Slide the positioning pin 5 downwards along the positioning groove 51 until the slots on both sides of the positioning pin 5 are aligned with the inner groove 52 on the outside of the positioning groove 51. This will achieve the initial positioning and fixation of the turntable assembly and the mounting base 3, avoiding the need to pre-install four positioning bolts for positioning in the traditional method, and effectively saving installation and positioning time.

[0025] refer to Figure 3 As shown, the locking assembly includes a slide rod 53, which is located inside the recessed groove 52. One end of the slide rod 53 is fixedly connected to a clip 54. A top plate is provided on the slide rod 53, which is located inside the recessed groove 52. A spring 55 is sleeved and connected on the slide rod 53. One end of the spring 55 is connected to the top plate, and the other end of the spring 55 is connected to the inner wall of one end of the recessed groove 52.

[0026] It should be noted that: the spring 55 undergoes elastic deformation during the insertion of the positioning post 5, storing elastic potential energy; when the positioning post 5 is fully inserted and the slot and the head 54 are aligned, the spring 55 releases its elastic potential energy, pushing the top plate to move the slide rod 53 and the head 54, so that the head 54 is engaged in the slot, thereby locking the positioning post 5.

[0027] The top plate ensures that the elastic force of the spring 55 is evenly applied to the slide bar 53, allowing the slide bar 53 and the locking head 54 to move smoothly and improving the reliability of locking.

[0028] refer to Figure 2 and Figure 3 As shown, both ends of the embedded groove 52 are provided with through openings, and a storage opening is provided between one end of the through opening and the groove wall of the positioning groove 51. The two ends of the slide rod 53 are slidably connected to the two through openings, and the clip 54 is located at the storage opening.

[0029] It should be noted that the through-hole provides a channel for the movement of the slide bar 53, ensuring that the slide bar 53 can slide smoothly within the inner groove 52;

[0030] The storage opening is used to accommodate the retracted head 54. When the positioning post 5 is initially inserted, the head 54 retracts to the storage opening to avoid interference with the positioning post 5 and ensure that the positioning post 5 can be smoothly inserted into the positioning slot 51. At the same time, after the positioning post 5 is inserted into place, the position of the storage opening allows the head 54 to accurately engage with the slot, thereby fixing the positioning post 5.

[0031] refer to Figure 3 and Figure 4 As shown, a pull ring 6 is fixedly connected to one end of the slide bar 53.

[0032] It should be noted that the pull ring 6 provides a point of leverage for disassembly. By applying external force to the pull ring 6, the operator can move the slide bar 53, overcome the elastic force of the spring 55, and allow the clamp head 54 to exit from the slot. This makes it easier for the operator to grip and apply force, reduces the difficulty of disassembly, and improves disassembly efficiency.

[0033] refer to Figure 4 As shown, a top support 7 is provided below the through-hole at the other end, and an arc-shaped archway is provided in the middle of the top support 7.

[0034] It should be noted that the arc-shaped opening on the top support 7, in conjunction with the pull ring 6, forms the fulcrum and force point of the lever structure. When disassembling the turntable assembly, the bent part of the pry bar is inserted into the pull ring 6, and the bar rests against the arc-shaped opening. Through the lever principle, the slide bar 53 can be moved with a small force, causing the locking head 54 to exit the slot.

[0035] Meanwhile, the arc-shaped arch design allows for a close fit with the pry bar, increasing the contact area and preventing the pry bar from slipping during operation. This ensures the safety and stability of the disassembly operation, and the arc-shaped structure can disperse the pressure applied by the pry bar, avoiding localized damage to the top support 7.

[0036] The working principle of the support structure for the transmission of the undercarriage of an excavator provided by this utility model is as follows: When installing the turntable assembly, the built-in gear ring 4 and the mounting base 3 need to be fixed in advance. First, align the two positioning pins 5 with the two positioning slots 51 on the mounting base 3, and slide the positioning pins 5 downward along the positioning slots 51 until the slots on the outer walls of the two sides of the positioning pins 5 are aligned with the inner grooves 52 on the outer side of the positioning slots 51. In the initial state, the lower end of the positioning pins 5 abuts against the inclined surface of the clamping head 54, causing the clamping head 54 to retract. The clamping head 54 drives the sliding rod 53 to slide, causing the spring 55 to undergo elastic deformation, causing the clamping head 54 to retract to the storage opening. When the positioning pins 5 are fully inserted, the spring 55 returns to its elastic inclined plate, driving the sliding rod 53 to move the clamping head 54 back and lock it into the slot. This achieves the initial positioning and fixing of the turntable assembly and the mounting base 3, avoiding the need to pre-install four positioning bolts for positioning in the traditional method, effectively saving installation and positioning time and bringing convenience to the installation work of the workers.

[0037] At this point, if it is necessary to disassemble the turntable assembly, insert the bent part of the pry bar or other tools into the pull ring 6, and at the same time, let the bar rest against the arc-shaped opening on the top support 7, and use this as the pivot point to pry, causing the pull ring 6 at one end of the slide bar 53 to move, overcoming the elastic force of the spring 55, so that the clip 54 is removed from the slot, and the positioning pin 5 can be taken out from the positioning slot 51, which will facilitate the subsequent replacement work of the staff.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A support structure for the transmission of the undercarriage frame of an excavator, characterized in that, include: Two side beam frames (1), a central frame (2) is provided between the two side beam frames (1), a mounting seat (3) is provided at the middle position of the central frame (2), a turntable assembly is provided on the mounting seat (3), the turntable assembly consists of an inner toothed ring (4) and an outer disc ring (41), both the inner toothed ring (4) and the outer disc ring (41) are provided with multiple bolt holes; The auxiliary installation mechanism includes two positioning posts (5), which are fixedly connected to the lower side wall of the built-in toothed ring (4). The mounting base (3) is provided with two positioning grooves (51), and two embedded grooves (52) are provided on the outer sides of the two positioning grooves (51). The outer walls on both sides of the two positioning posts (5) are provided with slots, and the two embedded grooves (52) are provided with locking components.

2. The support structure for the transmission of the undercarriage of an excavator according to claim 1, characterized in that, The two positioning posts (5) are symmetrically arranged, and the two positioning grooves (51) are symmetrically arranged. The two positioning posts (5) are slidably connected to the two positioning grooves (51) respectively.

3. The support structure for the transmission of the undercarriage of an excavator according to claim 1, characterized in that, The locking assembly includes a slide rod (53), which is located inside the recessed groove (52). One end of the slide rod (53) is fixedly connected to a clip (54). A top plate is provided on the slide rod (53), which is located inside the recessed groove (52). A spring (55) is sleeved and connected on the slide rod (53). One end of the spring (55) is connected to the top plate, and the other end of the spring (55) is connected to the inner wall of one end of the recessed groove (52).

4. A support structure for the transmission of the undercarriage of an excavator according to claim 3, characterized in that, Both ends of the embedded groove (52) are provided with through openings. One end of the through opening is provided with a storage opening between the groove wall of the positioning groove (51). The two ends of the slide rod (53) are slidably connected to the two through openings. The clip (54) is located at the storage opening.

5. A support structure for the transmission of the undercarriage of an excavator according to claim 3, characterized in that, A pull ring (6) is fixedly connected to one end of the slide rod (53).

6. A support structure for the transmission of the undercarriage of an excavator according to claim 1, characterized in that, A top support (7) is provided below the through-hole at the other end, and an arc-shaped archway is provided in the middle of the top support (7).

Images