A prestressed frame type anti-deformation excavator slewing platform

Abstract

This utility model relates to the field of slewing platform technology, specifically a prestressed frame-type anti-deformation excavator slewing platform, including a base plate. A connecting cylinder is fixedly connected to the upper surface of the base plate, and a slewing bearing is fixedly connected to the upper surface of the connecting cylinder. A platform plate is fixedly connected to the inner ring of the slewing bearing. A support structure is fixedly connected to the upper surface of the base plate by bolts. The support structure includes a frame and a connecting seat. The frame is detachably connected to the upper surface of the base plate, and the connecting seat is fixedly connected to the lower surface of the frame. In this utility model, when the T-shaped connecting rod is lowered, the universal ball and the limiting slide can be separated. At this time, the arc-shaped frame can be quickly disassembled, and the arc-shaped frame can be moved in the vertical direction, thereby changing the support force of the arc-shaped frame and the universal ball on the platform plate, making the platform plate more evenly stressed, effectively reducing the deformation of the platform plate during the slewing process, providing a horizontal component force to the base plate, and improving the deformation resistance of the entire mechanism.

Description

Technical Field

[0001] This utility model relates to the field of slewing platform technology, specifically a prestressed frame type anti-deformation excavator slewing platform. Background Technology

[0002] The excavator slewing platform has the characteristics of load-bearing and rotation, making the excavator's digging work more flexible. For reference, see the high-strength excavator slewing platform structure described in announcement number CN222949103U, which includes a base and a slewing platform. The base is equipped with double-row unequal diameter ball slewing bearings through the chassis. A support cylinder and a stabilizing support assembly are set between the bottom of the slewing platform and the base.

[0003] Although the above-mentioned device provides secondary support for the slewing platform and improves the stability of the slewing platform during operation, the support is passive and cannot adjust the force of the platform plate support. In addition, the device is highly integrated and lacks a quick-release structure for the auxiliary support components. Utility Model Content

[0004] The purpose of this utility model is to provide a prestressed frame type anti-deformation excavator slewing platform to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A prestressed frame type anti-deformation excavator slewing platform includes a base plate, a connecting cylinder fixedly connected to the upper surface of the base plate, a slewing bearing fixedly connected to the upper surface of the connecting cylinder, and a platform plate fixedly connected to the inner ring of the slewing bearing.

[0007] The upper surface of the base plate is fixedly connected to a support structure by bolts. The support structure includes a frame and a connecting seat. The frame is detachably connected to the upper surface of the base plate, and the connecting seat is fixedly connected to the lower surface of the frame. The connecting seat and the base plate are connected by bolts.

[0008] Furthermore, the lower surface of the base plate is fixedly connected with reinforcing ribs, and the upper surface of the base plate is provided with several screw holes.

[0009] Furthermore, the outer ring of the slewing bearing is connected to the connecting cylinder, one end of the connecting cylinder passes through the frame, a rotating shaft is embedded in the upper surface of the platform plate, a gear is fixedly connected to the outer surface of the rotating shaft, and the gear meshes with the inner ring of the slewing bearing.

[0010] Furthermore, the support structure also includes a mounting cavity, a lead screw nut, a hinge frame, and an arc frame. The mounting cavity is located on the upper surface of the frame. A double-ended lead screw is rotatably connected inside the mounting cavity. The lead screw nut is slidably connected inside the mounting cavity. The hinge frame is hinged to the upper surface of the lead screw nut. A T-shaped connecting rod is hinged to the other end of the hinge frame. The arc frame is embedded and movably connected to the outer surface of the T-shaped connecting rod.

[0011] Furthermore, the lead screw nut and the double-ended lead screw are threaded together, and a hexagonal column is fixedly connected to one end of the lead screw nut.

[0012] Furthermore, the upper surface of the arc-shaped frame is rotatably connected to several universal balls, which are rolledly connected to the platform plate.

[0013] Furthermore, a limiting groove is provided on the lower surface of the platform plate, and the limiting groove matches the universal ball.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The base plate is reinforced by a frame structure. The frame structure is an arched structure that provides auxiliary support to the platform plate. When the frame is under stress, it has an outward expansion component force. This component force acts on the base plate, increasing the stress-bearing area of ​​the base plate and reducing the possibility of localized deformation of the base plate.

[0016] 2. The limiting groove restricts and guides the omnidirectional ball, ensuring that it rolls along a predetermined trajectory when the platform rotates, preventing it from deviating or falling off during movement. Simultaneously, lowering the T-shaped connecting rod allows the omnidirectional ball and limiting groove to separate, enabling quick disassembly of the arc-shaped frame and vertical movement of the frame. This alters the support force provided by the arc-shaped frame and the omnidirectional ball to the platform, resulting in more even force distribution and effectively reducing deformation during rotation. This provides a horizontal force component to the base plate, improving the overall mechanism's resistance to deformation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the slewing bearing installation structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the support structure of this utility model.

[0021] In the diagram: 1. Base plate; 101. Reinforcing rib; 102. Screw hole; 2. Support structure; 201. Frame; 202. Connecting seat; 203. Mounting cavity; 204. Double-ended lead screw; 205. Lead screw nut; 206. Hinge frame; 207. T-shaped connecting rod; 208. Arc frame; 3. Universal ball; 4. Connecting cylinder; 5. Slewing bearing; 6. Gear; 601. Rotating shaft; 7. Platform plate; 701. Limiting groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 In this embodiment of the utility model, a prestressed frame type anti-deformation excavator slewing platform includes a base plate 1, a connecting cylinder 4 fixedly connected to the upper surface of the base plate 1, a slewing bearing 5 fixedly connected to the upper surface of the connecting cylinder 4, and a platform plate 7 fixedly connected to the inner ring of the slewing bearing 5.

[0024] A support structure 2 is fixedly connected to the upper surface of the base plate 1 by bolts. The support structure 2 includes a frame 201 and a connecting seat 202. The frame 201 is detachably connected to the upper surface of the base plate 1, and the connecting seat 202 is fixedly connected to the lower surface of the frame 201. The connecting seat 202 and the base plate 1 are connected by bolts.

[0025] Specifically, during use, the base plate 1 is installed with the connecting cylinder 4 and the slewing bearing 5. The base plate 1 directly bears the force applied to it by the connecting cylinder 4 and the slewing bearing 5. At this time, the base plate 1 has a tendency to be concave inward. The frame 201 reinforces the base plate 1. The frame 201 is an arched structure that provides auxiliary support for the platform plate 7. After being subjected to force, the frame 201 has an outward expansion component force. The component force acts on the base plate 1, which increases the force-bearing area of ​​the base plate 1 and reduces the possibility of deformation of the base plate 1 under local stress.

[0026] Example 1

[0027] like Figure 1-4 As shown, a reinforcing rib 101 is fixedly connected to the lower surface of the base plate 1, and several screw holes 102 are opened on the upper surface of the base plate 1.

[0028] In this embodiment, the reinforcing rib 101 is used to increase the strength of the base plate 1 and reduce the possibility of deformation of the base plate 1, and the screw hole 102 is used for auxiliary connection between the base plate 1 and the support structure 2.

[0029] like Figure 1-4 As shown, the outer ring of the slewing bearing 5 is connected to the connecting cylinder 4. One end of the connecting cylinder 4 passes through the frame 201. The upper surface of the platform plate 7 is embedded with a rotating shaft 601. The outer surface of the rotating shaft 601 is fixedly connected with a gear 6. The gear 6 and the inner ring of the slewing bearing 5 are meshed.

[0030] In this embodiment, when the gear 6 rotates, it can cooperate with the inner ring of the slewing bearing 5 to drive the platform plate 7 to rotate. The slewing bearing 5 realizes the rotational movement of the platform plate 7, enabling the excavator to flexibly adjust the direction of the working device during operation, improving work efficiency and flexibility, and meeting the work requirements under complex working conditions.

[0031] Example 2

[0032] Based on Embodiment 1, in order to overcome the problem that it is inconvenient to provide auxiliary support for the platform board 7 in Embodiment 1.

[0033] like Figure 1-4 As shown, the support structure 2 also includes a mounting cavity 203, a lead screw nut 205, a hinge frame 206, and an arc frame 208. The mounting cavity 203 is opened on the upper surface of the frame body 201. A double-ended lead screw 204 is rotatably connected inside the mounting cavity 203. The lead screw nut 205 is slidably connected inside the mounting cavity 203. The hinge frame 206 is hinged to the upper surface of the lead screw nut 205. A T-shaped connecting rod 207 is hinged to the other end of the hinge frame 206. The arc frame 208 is embedded and movably connected to the outer surface of the T-shaped connecting rod 207.

[0034] In this embodiment, when it is necessary to adjust the support state of the platform plate 7, the double-ended lead screw 204 can be rotated to make the lead screw nut 205 slide in the mounting cavity 203, thereby driving the hinge frame 206 to move, causing the T-shaped connecting rod 207 to move up or down, and simultaneously causing the arc frame 208 to move in the vertical direction. This changes the support force of the arc frame 208 and the universal ball 3 on the platform plate 7, making the platform plate 7 more evenly stressed, effectively reducing the deformation of the platform plate 7 during rotation, providing a horizontal component force to the base plate 1, and improving the deformation resistance of the entire mechanism.

[0035] like Figure 1-4 As shown, the lead screw nut 205 and the double-ended lead screw 204 are threaded together. One end of the lead screw nut 205 is fixedly connected to a hexagonal column. Several universal balls 3 are rotatably connected to the upper surface of the arc frame 208. The universal balls 3 are rotatably connected to the platform plate 7. The lower surface of the platform plate 7 is provided with a limit groove 701, which matches the universal balls 3.

[0036] In this embodiment, the hexagonal column design facilitates the operator's use of tools to rotate the lead screw nut 205, thereby achieving precise adjustment of the position of the arc frame 208. Several universal balls 3 are rotatably connected to the upper surface of the arc frame 208, and the universal balls 3 are rolledly connected to the platform plate 7. This rolling connection greatly reduces the friction between the arc frame 208 and the platform plate 7, allowing the platform plate 7 to rotate more smoothly during rotation, reducing energy loss and improving the excavator's operating efficiency. Simultaneously, a limiting groove 701 is provided on the lower surface of the platform plate 7, which matches the universal balls 3, limiting... The positioning groove 701 restricts and guides the omnidirectional ball 3, ensuring that the omnidirectional ball 3 can roll along a predetermined trajectory when the platform plate 7 rotates, preventing the omnidirectional ball 3 from deviating or falling off during movement. At the same time, the T-shaped connecting rod 207 can be lowered to separate the omnidirectional ball 3 from the positioning groove 701. At this time, the arc frame 208 can be quickly disassembled. The entire rotating platform forms a prestressed system that works in concert. The arched structure of the frame 201 provides overall anti-deformation capacity, the adjustment of the double-ended screw 204 provides local prestressed support, and the rolling connection between the omnidirectional ball 3 and the positioning groove 701 further optimizes the motion performance.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A prestressed frame type anti-deformation excavator slewing platform, comprising a base plate (1), a connecting cylinder (4) fixedly connected to the upper surface of the base plate (1), a slewing bearing (5) fixedly connected to the upper surface of the connecting cylinder (4), and a platform plate (7) fixedly connected to the inner ring of the slewing bearing (5). Its features are, The upper surface of the base plate (1) is fixedly connected to a support structure (2) by bolts. The support structure (2) includes: The frame (201) is detachably connected to the upper surface of the base plate (1); The connecting seat (202) is fixedly connected to the lower surface of the frame (201), and the connecting seat (202) and the base plate (1) are connected by bolts.

2. The prestressed frame type anti-deformation excavator slewing platform according to claim 1, characterized in that, The lower surface of the base plate (1) is fixedly connected with a reinforcing rib (101), and the upper surface of the base plate (1) is provided with a plurality of screw holes (102).

3. The prestressed frame type anti-deformation excavator slewing platform according to claim 1, characterized in that, The outer ring of the slewing bearing (5) is connected to the connecting cylinder (4). One end of the connecting cylinder (4) passes through the frame (201). The upper surface of the platform plate (7) is embedded with a rotating shaft (601). The outer surface of the rotating shaft (601) is fixedly connected with a gear (6). The gear (6) meshes with the inner ring of the slewing bearing (5).

4. The prestressed frame type anti-deformation excavator slewing platform according to claim 3, characterized in that, The supporting structure (2) also includes: The mounting cavity (203) is opened on the upper surface of the frame (201), and a double-ended lead screw (204) is rotatably connected inside the mounting cavity (203). The lead screw nut (205) is slidably connected inside the mounting cavity (203); A hinge frame (206) is hinged to the upper surface of a lead screw nut (205), and a T-shaped connecting rod (207) is hinged to the other end of the hinge frame (206). The arc-shaped frame (208) is embedded in the outer surface of the T-shaped connecting rod (207).

5. The prestressed frame type anti-deformation excavator slewing platform according to claim 4, characterized in that, The lead screw nut (205) and the double-ended lead screw (204) are threaded together, and a hexagonal column is fixedly connected to one end of the lead screw nut (205).

6. The prestressed frame type anti-deformation excavator slewing platform according to claim 4, characterized in that, The upper surface of the arc frame (208) is rotatably connected with several universal balls (3), and the universal balls (3) and the platform plate (7) are rotatably connected.

7. The prestressed frame type anti-deformation excavator slewing platform according to claim 6, characterized in that, The lower surface of the platform plate (7) is provided with a limiting groove (701), which is matched with the universal ball (3).

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