Excavator arm end suspension mechanism

Abstract

The utility model relates to the technical field of excavator accessories, and discloses an excavator arm end suspension mechanism which comprises a fixing plate, damping sleeves are fixedly connected to the left side and the right side of the middle of the top end of the fixing plate, and oil storage cavities are formed in the lower ends of the middles of the inner side walls of the two damping sleeves. Working cavities are formed in the upper ends of the middles of the inner side walls of the two damping sleeves correspondingly, pistons are slidably connected to the inner side walls of the two damping sleeves correspondingly, and one-way oil passing valves are fixedly connected to the left sides of the middles of the two pistons correspondingly. According to the utility model, the mechanical arm presses downwards to enable the reinforcing plate to extrude the connecting rod, so that the piston fixed at the bottom end of the connecting rod is pushed to slide in the damping sleeve, when the piston slides downwards, hydraulic oil in the oil storage cavity flows to the working cavity through the damping valve, and meanwhile, the damping valve applies resistance to the flowing hydraulic oil; and through elastic cooperation of the industrial spring, the vibration strength of the equipment can be weakened.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator accessories, in particular to an excavator arm end suspension mechanism. Background Art

[0002] With the rapid development of infrastructure construction and the advancement of urbanization in my country, excavators are increasingly used in engineering construction. As one of the key components of excavators, the innovation and improvement of the boom end suspension mechanism will directly promote the technological progress of the entire excavator industry and meet the needs of higher efficiency, safer and more environmentally friendly operations.

[0003] After searching, Chinese patent announcement number: CN219491117U discloses an excavator arm end suspension mechanism, which belongs to the technical field of excavator accessories, and is used to provide an excavator arm end suspension mechanism that is easy to use and has better stability, including a mechanical arm connection part, and the side of the mechanical arm connection part is fixedly connected with a pair of symmetrical limit axis frames, the two limit axis frames are parallel to each other, and a central limit axis is fixedly connected between them, and the central limit axis is covered with a cantilever arm, and the lower end of the cantilever arm is suitable for connecting the equipment that needs to be suspended, and the limit axis frame is provided with a retractable ring on the side opposite to the cantilever arm. This utility model provides a fixed retractable ring structure between the cantilever arm and the limit axis frame, so that the functional equipment installed under the cantilever arm can easily maintain a vertical state, and can also maintain relative stability when not working or when it needs to be transferred, thereby avoiding the problem of the center of gravity swaying when the excavator is stationary or moving.

[0004] During use of the above-mentioned equipment, a suspension mechanism is connected to the outside of the mechanical arm so that the functional equipment installed under the cantilever arm can only remain in a vertical state. However, when the device is performing high-intensity operations, strong and continuous vibrations may cause metal fatigue in the bolts connecting the suspension mechanism and the outside of the mechanical arm, thereby causing the bolts to break, greatly affecting the safety of construction. Therefore, an excavator arm end suspension mechanism is proposed to solve the above-mentioned problem. Utility Model Content

[0005] In order to remedy the above deficiencies, the utility model provides an excavator arm end suspension mechanism, which aims to improve the problem in the prior art that when the device is performing high-intensity operations, strong and continuous vibrations may cause metal fatigue in the bolts of the outer connection between the suspension mechanism and the mechanical arm, thereby causing the bolts to break.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an excavator arm end suspension mechanism, including a fixed plate, the left and right sides of the middle of the top of the fixed plate are fixedly connected with shock-absorbing sleeves, the lower ends of the middle parts of the inner walls of the two shock-absorbing sleeves are provided with oil storage chambers, the upper ends of the middle parts of the inner walls of the two shock-absorbing sleeves are provided with working chambers, the inner walls of the two shock-absorbing sleeves are slidably connected with pistons, the left sides of the middle parts of the two pistons are fixedly connected with one-way oil valves, the right sides of the middle parts of the two pistons are fixedly connected with damping valves, the middle parts of the tops of the two pistons are fixedly connected with connecting rods, the tops of the two shock-absorbing sleeves are fixedly connected with industrial springs, and the tops of the connecting rods are provided with connecting components.

[0007] As a further description of the above technical solution:

[0008] The connecting assembly includes a connecting plate, the bottom end of which is fixedly connected to the top of the connecting rod, the top of which is fixedly connected to a reinforcing tube, the front and rear ends of the reinforcing tube are fixedly connected to two reinforcing plates, and the bottom ends of the plurality of reinforcing plates are fixedly connected to the top of the connecting plate.

[0009] As a further description of the above technical solution:

[0010] The outer sides of the middle parts of the two pistons are both provided with sealing grooves, and the inner side walls of the two sealing grooves are both clamped with sealing rings.

[0011] As a further description of the above technical solution:

[0012] The top end of the reinforcement tube is fixedly connected with a mechanical arm connector, and the top end of the mechanical arm connector is fixedly connected with a positioning port.

[0013] As a further description of the above technical solution:

[0014] A first elastic plate is fixedly connected to the middle portion of the inner side wall of the positioning port.

[0015] As a further description of the above technical solution:

[0016] A mounting groove is provided on the outer side of the middle part of the mechanical arm connecting piece, and a second elastic plate is fixedly connected to the inner bottom wall of the mounting groove.

[0017] As a further description of the above technical solution:

[0018] A locking groove is provided at the front end of the middle part of the mechanical arm connecting piece, and a connecting column is fixedly connected to the middle part of the bottom end of the fixing plate.

[0019] As a further description of the above technical solution:

[0020] The bottom end of the connecting column is fixedly connected with a bottom connecting flange, and a weight-reducing groove is provided in the middle of the bottom end of the bottom connecting flange.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by fixing the shock-absorbing sleeve on the top of the fixed plate, when the mechanical arm is pressed down, the reinforcing plate can be used to squeeze the connecting rod, thereby pushing the piston fixed at the bottom end of the connecting rod to slide in the shock-absorbing sleeve. When the piston slides downward, the hydraulic oil in the oil storage chamber will flow from the damping valve to the working chamber. During the flow of the hydraulic oil, the damping valve will apply resistance, thereby reducing the vibration force when the equipment is running. At the same time, the elastic coordination of the industrial spring can further reduce the intensity of the vibration.

[0023] 2. In the utility model, by setting a connecting plate, the shock absorbing device and the mechanical arm connecting piece can be connected together, which is convenient for quick assembly during operation. At the same time, by fixing a reinforcing plate between the connecting plate and the reinforcing tube, the connection between the connecting plate and the reinforcing tube can be strengthened to prevent breakage at the interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of an excavator arm end suspension mechanism proposed by the utility model;

[0025] Figure 2 This is an internal structural diagram of a shock-absorbing sleeve of an excavator arm end suspension mechanism proposed by the utility model;

[0026] Figure 3 A cross-sectional view of a positioning port of an excavator arm end suspension mechanism proposed by the utility model;

[0027] Figure 4 The utility model is a schematic diagram of a bottom end connecting flange of an excavator arm end suspension mechanism.

[0028] Legend:

[0029] 1. Fixed plate; 2. Shock-absorbing sleeve; 3. Oil storage chamber; 4. Working chamber; 5. Piston; 6. One-way oil valve; 7. Damping valve; 8. Connecting rod; 9. Connecting assembly; 901. Connecting plate; 902. Strengthening pipe; 903. Strengthening plate; 10. Industrial spring; 11. Sealing groove; 12. Sealing ring; 13. Robot arm connector; 14. Positioning port; 15. First elastic plate; 16. Mounting groove; 17. Second elastic plate; 18. Clamping groove; 19. Connecting column; 20. Bottom connecting flange; 21. Weight reduction groove. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1 and Figure 2 The utility model provides an embodiment: an excavator arm end suspension mechanism, comprising a fixed plate 1, a damping sleeve 2 is fixedly connected to the left and right sides of the middle of the top of the fixed plate 1, an oil storage chamber 3 is opened at the lower end of the middle of the inner wall of the two damping sleeves 2, a working chamber 4 is opened at the upper end of the middle of the inner wall of the two damping sleeves 2, a piston 5 is slidably connected to the inner wall of the two damping sleeves 2, a one-way oil valve 6 is fixedly connected to the left side of the middle of the two pistons 5, a damping valve 7 is fixedly connected to the right side of the middle of the two pistons 5, a connecting rod 8 is fixedly connected to the middle of the top of the two pistons 5, an industrial spring 10 is fixedly connected to the top of the two damping sleeves 2, and a connecting assembly 9 is arranged at the top of the connecting rod 8; a sealing groove 11 is opened on the outer side of the middle of the two pistons 5, and a sealing ring 12 is clamped on the inner wall of the two sealing grooves 11;

[0032] Specifically: by opening a sealing groove 11 on the outer side of the middle of the piston 5 and clamping a sealing ring 12 on the inner wall of the sealing groove 11, the sealing effect between the piston 5 and the inner wall of the shock-absorbing sleeve 2 can be strengthened to prevent the hydraulic oil from flowing along the gap and causing the shock-absorbing effect to be weakened.

[0033] Reference Figure 1 and Figure 3 The connection assembly 9 includes a connection plate 901, the bottom end of the connection plate 901 is fixedly connected to the top end of the connecting rod 8, the top end of the connection plate 901 is fixedly connected to a reinforcing tube 902, the front and rear ends of the reinforcing tube 902 are fixedly connected to two reinforcing plates 903, and the bottom ends of the plurality of reinforcing plates 903 are fixedly connected to the top end of the connection plate 901; the top end of the reinforcing tube 902 is fixedly connected to a mechanical arm connector 13, and the top end of the mechanical arm connector 13 is fixedly connected to a positioning port 14;

[0034] Specifically: by fixing the connection positioning port 14 at the top of the robot arm connector 13, the robot arm end can be installed quickly and accurately, while reducing the probability of collision during the installation process and extending the service life of the equipment.

[0035] Reference Figure 1 , Figure 3 and Figure 4A first elastic plate 15 is fixedly connected to the middle of the inner side wall of the positioning port 14; a mounting groove 16 is provided on the outer side of the middle of the mechanical arm connecting piece 13, and a second elastic plate 17 is fixedly connected to the inner bottom wall of the mounting groove 16; a snap-fit ​​groove 18 is provided at the front end of the middle of the mechanical arm connecting piece 13, and a connecting column 19 is fixedly connected to the middle of the bottom end of the fixing plate 1; a bottom connecting flange 20 is fixedly connected to the bottom end of the connecting column 19, and a weight-reducing groove 21 is provided at the middle of the bottom end of the bottom connecting flange 20;

[0036] Specifically: by fixing the first elastic plate 15 to the middle of the inner wall of the positioning port 14 and fixing the second elastic plate 17 to the inner bottom wall of the installation groove 16, the installation port of the device can be protected to prevent deformation of the installation port caused by long-term collision during installation.

[0037] Working principle: When the device is needed, the excavator arm end and the mechanical arm connector 13 must be fixed together first, and the positioning port 14 fixedly connected to the top of the mechanical arm connector 13 is used for rapid calibration, which has a very high assembly success rate. Then, the bottom connecting flange 20 fixedly connected to the bottom of the connecting column 19 is connected to the drilling or crushing equipment, and then the reinforcing plate 903 is pressed down by the excavator mechanical arm to squeeze the connecting rod 8, thereby pushing the piston 5 fixed at the bottom end of the connecting rod 8 to slide in the shock absorbing sleeve 2. When the piston 5 slides downward, the hydraulic oil in the oil storage chamber 3 will flow to the working chamber 4 through the damping valve 7, and the damping valve 7 will exert pressure on the hydraulic oil flowing through. By adding resistance and the elastic cooperation of the industrial spring 10, the vibration of the equipment can be weakened. When the excavator arm is lifted, the drilling or crushing equipment will drive the piston 5 to slide upward due to its own gravity and the reverse elasticity of the industrial spring 10, and squeeze the hydraulic oil in the working chamber 4 back into the oil storage chamber through the one-way oil valve 6 fixed on the left side of the piston 5, thereby completing the circulation operation process, and through the sealing groove 11 opened on the outer side of the middle part of the piston 5, the sealing ring 12 is clamped on the inner wall of the sealing groove 11, which can strengthen the sealing effect between the piston 5 and the inner wall of the shock-absorbing sleeve 2, and effectively prevent the hydraulic oil from flowing along the gap to reduce the shock-absorbing effect.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An excavator arm end suspension mechanism, comprising a fixing plate (1), characterized in that: The left and right sides of the middle of the top of the fixed plate (1) are fixedly connected with a shock-absorbing sleeve (2), the lower ends of the middle of the inner side walls of the two shock-absorbing sleeves (2) are provided with an oil storage chamber (3), the upper ends of the middle of the inner side walls of the two shock-absorbing sleeves (2) are provided with a working chamber (4), the inner side walls of the two shock-absorbing sleeves (2) are slidably connected with a piston (5), the left sides of the middle of the two pistons (5) are fixedly connected with a one-way oil valve (6), the right sides of the middle of the two pistons (5) are fixedly connected with a damping valve (7), the middle of the top of the two pistons (5) are fixedly connected with a connecting rod (8), the top of the two shock-absorbing sleeves (2) are fixedly connected with an industrial spring (10), and the top of the connecting rod (8) is provided with a connecting assembly (9).

2. The excavator arm end suspension mechanism according to claim 1, characterized in that: The connection assembly (9) comprises a connection plate (901), the bottom end of the connection plate (901) is fixedly connected to the top end of the connecting rod (8), the top end of the connection plate (901) is fixedly connected to a reinforcement tube (902), the front and rear ends of the reinforcement tube (902) are fixedly connected to two reinforcement plates (903), and the bottom ends of the plurality of reinforcement plates (903) are fixedly connected to the top end of the connection plate (901).

3. The excavator arm end suspension mechanism according to claim 1, characterized in that: A sealing groove (11) is provided on the outer side of the middle part of the two pistons (5), and a sealing ring (12) is clamped on the inner side walls of the two sealing grooves (11).

4. The excavator arm end suspension mechanism according to claim 2, characterized in that: The top end of the strengthening tube (902) is fixedly connected to a mechanical arm connecting piece (13), and the top end of the mechanical arm connecting piece (13) is fixedly connected to a positioning port (14).

5. The excavator arm end suspension mechanism according to claim 4, characterized in that: A first elastic plate (15) is fixedly connected to the middle portion of the inner side wall of the positioning port (14).

6. The excavator arm end suspension mechanism according to claim 4, characterized in that: A mounting groove (16) is provided on the outer side of the middle part of the mechanical arm connecting piece (13), and a second elastic plate (17) is fixedly connected to the inner bottom wall of the mounting groove (16).

7. The excavator arm end suspension mechanism according to claim 4, characterized in that: A locking groove (18) is provided at the front end of the middle part of the mechanical arm connecting piece (13), and a connecting column (19) is fixedly connected to the middle part of the bottom end of the fixing plate (1).

8. The excavator arm end suspension mechanism according to claim 7, characterized in that: The bottom end of the connecting column (19) is fixedly connected to a bottom connecting flange (20), and a weight-reducing groove (21) is provided in the middle of the bottom end of the bottom connecting flange (20).

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