Large excavator platform vibration buffering mechanism
By designing the bearing and inclined plate slide structure in the excavator, converting and absorbing vibration, the problem of insufficient load bearing of the vibration buffer structure in the prior art is solved, and more effective vibration absorption and stability improvement is achieved.
Patent Information
- Application Number
- CN202421281740.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The existing excavator vibration buffer structure is too heavy and cannot effectively absorb impact loads, resulting in a shortened service life.
Design a vibration buffer mechanism of a large excavator platform, using bearing bearings to fix the bottom base ring to the chassis assembly and the top base ring to the upper platform assembly, and convert the vertical through the hinge structure of the inclined plate and slider and the hydraulic buffer. Direct vibration is a lateral force dispersion, which absorbs vibration using springs and polyurethane filler strips, and optimizes the load bearing capacity with special-shaped bearings.
It effectively absorbs the vibration of the excavator during movement and operation, extends its service life, improves operating stability and safety, and improves the load-bearing capacity of the upper platform of large excavators.
Smart Images
Figure CN222334377U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of excavator shock absorption, in particular to a vibration buffer mechanism for a large excavator platform. Background Technique
[0002] During the working process of the excavator, due to its working nature, impact loads will be generated frequently. If these impact loads are not controlled, the service life of the excavator will be greatly shortened. Therefore, the buffer structure design of the excavator platform is crucial, which can effectively absorb the impact force and improve the operation stability and safety.
[0003] At present, in some vibration buffer structures, the buffer structure equipped with the slewing mechanism of the excavator directly bears the vibration transmitted between the chassis assembly and the upper platform assembly, which places a heavy burden on the slewing mechanism. Content of the Utility Model
[0004] The purpose of the utility model is to provide a vibration buffer mechanism for a large excavator platform to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] A vibration buffer mechanism for a large excavator platform includes a buffer main body.承接轴承 are fixedly installed on the upper and lower surfaces of the buffer main body. The buffer main body includes a bottom base ring and a top base ring. Four base plates are fixedly installed on the bottom side surface of the bottom base ring and the upper side surface of the top base ring at equal angles in a ring shape. The two sides of the base plate are hinged to the lower end of the inclined plate. The upper end of the inclined plate is hinged to a slider. The slider is slidably installed in a chute. A spring is fixedly connected between the slider and one end wall of the chute.
[0007] Furthermore: The two groups of base plates are arranged in an equal-angle staggered manner, and a hydraulic buffer is fixedly installed on the outer surface of the base plate.
[0008] Furthermore: The chute is filled with a polyurethane filling strip.
[0009] Furthermore: The承接轴承 includes an outer bearing ring, an inner bearing ring is rotatably sleeved inside the outer bearing ring, a roller frame is rotatably clamped between the outer bearing ring and the inner bearing ring. The number of roller frames is two. Rolling rollers are rotatably installed in the roller frame at equal angles in a ring shape in the up and down direction.
[0010] Furthermore: The outer bearing ring is a circular ring structure with an F-shaped cross-section, and the inner bearing ring is a circular ring structure with a C-shaped cross-section.
[0011] Furthermore: The two groups of outer bearing rings are respectively fixedly connected to the bottom side of the bottom base ring and the upper surface of the top base ring.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. Use the bearing to fix the bottom base ring with the excavator chassis assembly, and use the bearing to fix the top base ring with the excavator upper platform assembly. Together with the excavator's slewing mechanism, it is installed between the chassis assembly and the upper platform assembly to jointly undertake the rotation support work. The vibration generated when the excavator moves and works will force the adjacent surfaces of the chassis assembly and the upper platform assembly to show a movement trend of contacting each other, and at the same time compress the bottom base ring and the top base ring, so that the bottom base ring and the top base ring show a movement trend of contacting each other, suppress each group of inclined plates, and force the slider hinged at one end of the inclined plate to show a sliding movement trend in the slide groove. At the same time, the spring gives elastic support to the slider, converts the vibration transmitted by the inclined plate into elastic potential energy and absorbs it, and performs shock absorption work. Through the inclined plate, the vertical vibration transmitted between the chassis assembly and the upper platform assembly is converted into lateral force dispersion and absorbed with the bottom base ring and the top base ring as the transmission path.
[0014] 2. Design a special-shaped bearing auxiliary buffer body to connect with the chassis assembly and the upper platform assembly. The inner and outer ring structures of the traditional bearing are optimized by extending independent rotating surfaces on the upper and lower surfaces. The rotation connection between the outer ring and the inner ring of the bearing is jointly supported by two layers of rolling rollers to improve the bearing capacity to cope with the weight of the upper platform of the large excavator. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the buffer body in the utility model;
[0017] Figure 3 It is a schematic diagram of the receiving bearing in the utility model;
[0018] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.
[0019] In the figure: 1. Buffer body; 101. Bottom base ring; 102. Top base ring; 103. Base plate; 104. Hydraulic buffer; 105. Inclined plate; 106. Slider; 107. Slide groove; 108. Spring; 109. Polyurethane filling strip; 2. Support bearing; 201. Bearing outer ring; 202. Bearing inner ring; 203. Roller frame; 204. Roller. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figures 1 to 4 In an embodiment of the utility model, a vibration buffer mechanism for a large excavator platform includes a buffer body 1, and receiving bearings 2 are fixedly installed on the upper and lower surfaces of the buffer body 1. The buffer body 1 includes a bottom base ring 101 and a top base ring 102. The bottom surface of the bottom base ring 101 and the upper surface of the top base ring 102 are both annular and fixedly installed with four base plates 103 at equal angles. The two sides of the base plate 103 are hinged to the lower end of the inclined plate 105, and the upper end of the inclined plate 105 is hinged with a slider 106. The slider 106 is slidably installed in a slide groove 107, and a spring 108 is fixedly connected between the slider 106 and the groove wall at one end of the slide groove 107.
[0022] Specifically, the bottom base ring 101 is fixedly connected to the chassis assembly of the excavator by using the bearing 2, and the top base ring 102 is fixedly connected to the upper platform assembly of the excavator by using the bearing 2. Together with the slewing mechanism of the excavator, it is installed between the chassis assembly and the upper platform assembly to jointly bear the rotation support work. The vibration generated when the excavator moves and works will force the adjacent surfaces of the chassis assembly and the upper platform assembly to show a movement trend of contacting each other, and at the same time compress the bottom base ring 101 and the top base ring 102, so that the bottom base ring 101 and the top base ring 102 are in contact with each other. The rings 102 tend to move in contact with each other, suppressing each group of inclined plates 105, forcing the slider 106 hinged at one end of the inclined plate 105 to slide in the slide groove 107. At the same time, the spring 108 gives elastic support to the slider 106, converts the vibration transmitted from the inclined plate 105 into elastic potential energy and absorbs it to perform shock absorption. Through the inclined plate 105, the vertical vibration transmitted between the chassis assembly and the upper platform assembly is converted into lateral force dispersion and absorbed with the bottom base ring 101 and the top base ring 102 as the transmission path.
[0023] Embodiment 1
[0024] like Figure 1-2 As shown, in this embodiment, two groups of base plates 103 are arranged alternately at equal angles, and a hydraulic buffer 104 is fixedly mounted on the outer surface of the base plate 103 .
[0025] In this embodiment, the hydraulic buffer 104 is a hyg2-60 hydraulic buffer. The hydraulic buffer 104 directly bears and buffers the vibrations transmitted between the chassis assembly and the upper platform assembly, and shares the supporting force of the inclined plate 105 at the connection between the chassis assembly and the platform assembly.
[0026] As Figure 2 shown, in this embodiment, the chute 107 is filled with a polyurethane filling strip 109.
[0027] During specific implementation, the polyurethane filling strip 109 exerts a certain damping effect on the slider 106 in the chute 107, and cooperates with the spring 108 to perform the buffering work. At the same time, the elastic potential energy stored in the spring 108 is absorbed to prevent shaking when the spring rebounds.
[0028] Embodiment 2
[0029] On the basis of Embodiment 1, in order to make up for the problem in Embodiment 1 that when the upper platform assembly of the excavator rotates, the buffer main body 1 needs to ensure support and buffering while also avoiding hindering the rotation of the upper platform. The upper platform of a large excavator itself has a high weight, and a large pressure is exerted on the buffer main body 1.
[0030] As Figure 3-4 shown, in this embodiment, the receiving bearing 2 includes an outer bearing ring 201. An inner bearing ring 202 is rotatably sleeved inside the outer bearing ring 201. A roller frame 203 is rotatably clamped between the outer bearing ring 201 and the inner bearing ring 202. The number of roller frames 203 is two. Rolling rollers 204 are rotatably installed at equal angles in a ring shape in the up and down directions of the roller frame 203; the outer bearing ring 201 is a circular ring structure with an F-shaped cross-section, and the inner bearing ring 202 is a circular ring structure with a匚-shaped cross-section; the two groups of outer bearing rings 201 are respectively fixedly connected to the bottom side of the bottom base ring 101 and the upper surface of the top base ring 102.
[0031] During specific implementation, a special-shaped bearing is designed to assist the connection between the buffer main body 1 and the chassis assembly and the upper platform assembly. The inner and outer ring structures of the traditional bearing are optimized by extending independent rotating surfaces on the upper and lower surfaces. The rotation connection between the outer bearing ring 201 and the inner bearing ring 202 is jointly borne by the two layers of rolling rollers 204 to improve the load-bearing capacity of the receiving bearing 2 to cope with the weight of the upper platform of the large excavator.
[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A large excavator platform vibration buffer mechanism, comprising a buffer body (1), characterized in that: The upper and lower surfaces of the buffer body (1) are fixedly installed with bearing supports (2). The buffer body (1) includes a bottom base ring (101) and a top base ring (102). Four base plates (103) are fixedly installed at equal angles in a circular shape on the bottom surface of the bottom base ring (101) and the upper surface of the top base ring (102). Both sides of the base plate (103) are hinged to the lower ends of inclined plates (105). The upper ends of the inclined plates (105) are hinged with sliders (106). The sliders (106) are slidably installed in the sliding grooves (107). A spring (108) is fixedly connected between the slider (106) and one end wall of the sliding groove (107).
2. A large excavator platform vibration buffer mechanism according to claim 1, characterized in that: The two groups of base plates (103) are arranged in an equal-angle staggered manner. A hydraulic buffer (104) is fixedly installed on the outer surface of the base plate (103).
3. A large excavator platform vibration buffer mechanism according to claim 2, characterized in that: A polyurethane filling strip (109) is filled in the sliding groove (107).
4. A large excavator platform vibration buffer mechanism according to claim 3, characterized in that: The bearing support (2) includes an outer bearing ring (201). An inner bearing ring (202) is rotatably sleeved inside the outer bearing ring (201). A roller frame (203) is rotatably clamped between the outer bearing ring (201) and the inner bearing ring (202). The number of the roller frames (203) is two. Rolling rollers (204) are rotatably installed at equal angles in a circular shape in the up-and-down direction of the roller frame (203).
5. A large excavator platform vibration buffer mechanism according to claim 4, characterized in that: The outer bearing ring (201) is a circular ring structure with an F-shaped cross-section. The inner bearing ring (202) is a circular ring structure with a C-shaped cross-section.
6. A large excavator platform vibration buffer mechanism according to claim 5, characterized in that: The two groups of outer bearing rings (201) are respectively fixedly connected to the bottom side of the bottom base ring (101) and the upper surface of the top base ring (102).