Elastic loading buffer mechanism

Abstract

The invention relates to the technical field of loading, and discloses an elastic loading buffer mechanism which comprises a first connecting tool, a buffer assembly and a second connecting tool. The first spring plate and the second spring plate are separated through the first buffer column and the second buffer column to form a buffer mechanism, impact suppression in the loading process is carried out completely depending on a mechanical structure, and the structure is simpler compared with the structure that corresponding action control is carried out after operation of a control system; the first connecting tool and the second connecting tool connected to the two ends of the buffering mechanism can be connected according to any design of the structure of an object piece. By adjusting the distance between the first buffer column and the second buffer column, the toughness of the buffer mechanism is adjusted, and the buffer mechanism is softer or harder, so that the buffer mechanism adapts to different load impacts; the first spring plate and the second spring plate are used for absorbing energy, high-frequency motion and low-frequency motion can be effectively buffered and are not prone to being influenced by external factors, and the buffering process is stable.

Description

Technical Field

[0001] The invention relates to the technical field of loading, in particular to an elastic loading buffer mechanism. Background Art

[0002] In mechanical structures, rigid connections are usually used between interacting moving parts. When the control system controls the actuator to perform corresponding actions, it is usually not a strict uniform linear motion, especially the acceleration process of the actuator starting and the deceleration process when it reaches the position. Since the actuator has a certain mass, when the actuator drives its actuator to perform trajectory motion, the speed change will cause a large load impact between the rigid connections.

[0003] Load impact has a great impact on the life of rigid connection parts. Being in the impact part for a long time will cause fatigue failure of metal parts. Bearing connection parts will cause accelerated wear of bearings, gears and other power transmission parts, leading to failure and fracture. In engineering applications, various means are often used to reduce load impact. Many measures are at the expense of motion efficiency. For example, in order to reduce the impact of the movement process, the acceleration and deceleration process during the movement process is extended, the switching process is smoothly transitioned, and the impact of rapid acceleration and deceleration is minimized. Although the loading impact is alleviated to a certain extent, the overall operating speed of the mechanism is greatly reduced, affecting the overall efficiency. On the other hand, the deceleration control at both ends increases the complexity of system control.

[0004] In loading tests, it is usually necessary to apply a constant load to the test product to simulate its load-bearing condition and maintain a constant load throughout the movement. It is difficult to reduce the load impact during the loading process through control means for rigid connectors, and the same control parameters cannot control the loading of different working conditions at the same time. Summary of the invention

[0005] The object of the present invention is to provide an elastic loading buffer mechanism to solve the problem that load impact is difficult to eliminate due to the rigid connection between moving parts.

[0006] The present invention is achieved through the following technical solutions: an elastically loaded buffer mechanism, comprising a first connecting tool, one end of the first connecting tool is connected to a buffer assembly, and the other end is connected to an external load; the buffer assembly comprises a first spring plate, a second spring plate, and a connecting portion, and the first spring plate and the second spring plate are connected together through the connecting portion; the connecting portion comprises a first connecting unit and a second connecting unit; a second connecting tool, one end of the second connecting tool is connected to the buffer assembly, and the other end is connected to an external load.

[0007] The first connecting fixture and the second connecting fixture are respectively distributed on both sides of the buffer assembly and are located in the middle position of the first connecting unit and the second connecting unit. When the first connecting fixture and the second connecting fixture are subjected to the inward squeezing force transmitted by the external load, the first spring plate and the second spring plate are rapidly bent and deformed inward; conversely, when the first connecting fixture and the second connecting fixture are subjected to the outward stretching force transmitted by the external load, the first spring plate and the second spring plate are rapidly bent and deformed outward; this reciprocating process is repeated to achieve a buffering effect on the impact force.

[0008] In order to better realize the present invention, further, the first connecting unit includes a first buffer column and a first back-tightening nut, the two ends of the first buffer column are respectively inserted into the first spring plate and the second spring plate, and connecting threads are provided at both ends; the first buffer column is connected to the first spring plate and the second spring plate by screwing two first back-tightening nuts on the connecting threads.

[0009] In order to better realize the present invention, further, the second connecting unit includes a second buffer column and a second back-tightening nut, the two ends of the second buffer column are respectively inserted into the first spring plate and the second spring plate, and connecting threads are arranged at both ends; the second buffer column is connected to the first spring plate and the second spring plate by screwing two second back-tightening nuts on the connecting threads.

[0010] In order to better implement the present invention, further, the first spring plate and the second spring plate are both provided with notches, and the first buffer column and the second buffer column are both inserted into the corresponding notches; by adjusting the distance between the first connecting unit and the second connecting unit, the toughness of the buffer assembly can be adjusted.

[0011] In order to better implement the present invention, further, the connecting threads set at both ends of the first buffer column have opposite rotation directions; the connecting threads set at both ends of the second buffer column have opposite rotation directions; the first back-tightening nut and the second back-tightening nut are both gasket type.

[0012] In order to better implement the present invention, further, the lengths of the first buffer column and the second buffer column are adjustable.

[0013] In order to better implement the present invention, further, the first connecting tool is installed on the second spring plate through a first fixing screw, and the second connecting tool is installed on the first spring plate through a second fixing screw.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] (1) Simple structure: The present invention separates the first spring plate from the second spring plate by the first buffer column and the second buffer column to form a buffer mechanism, and completely relies on the mechanical structure to suppress the impact of the loading process. Compared with the control system that uses the control system to calculate and perform the corresponding action control structure, it is simpler;

[0016] (2) Wide range of applications; the first connecting fixture and the second connecting fixture at both ends of the buffer mechanism can be arbitrarily designed and connected according to the structure of the object; by adjusting the distance between the first buffer column and the second buffer column, the toughness of the buffer mechanism can be adjusted to make the buffer mechanism softer or harder, thereby adapting to load impacts of different sizes;

[0017] (3) The buffering process is stable; by using the first spring plate and the second spring plate to absorb energy, both high-frequency and low-frequency movements can be effectively buffered and are almost unaffected by external factors. Compared with the corresponding action control process after the control system calculation, it is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a working principle diagram of the present invention.

[0020] Among them: 1-first connecting tool; 2-first fixing screw; 3-first back-tightening nut; 4-first buffer column; 5-second connecting tool; 6-second fixing screw; 7-second back-tightening nut; 8-first spring plate; 9-second buffer column; 10-second spring plate; 11-tension sensor; 12-buffer mechanism; 13-loading cylinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiment 1:

[0024] This embodiment provides an elastic loading buffer mechanism, specifically as follows Figure 1 , Figure 2 As shown, it includes a first connecting fixture 1, a buffer assembly, and a second connecting fixture 5. One end of the first connecting fixture 1 is connected to the buffer assembly, and the other end is connected to an external load; the buffer assembly includes a first spring plate 8, a second spring plate 10, and a connecting portion, and the first spring plate 8 and the second spring plate 10 are connected together through the connecting portion; the connecting portion includes a first connecting unit and a second connecting unit; one end of the second connecting fixture 5 is connected to the buffer assembly, and the other end is connected to an external load; the first connecting fixture 1 and the second connecting fixture 5 are respectively distributed on both sides of the buffer assembly, and are located in the middle of the first connecting unit and the second connecting unit. According to the needs of the operating scene, different first spring plates 8 and second spring plates 10 can be replaced to change the buffering effect.

[0025] See also Figure 2 The buffer mechanism 12 is connected to the tension sensor 11 and the loading cylinder 13 respectively. When the loading cylinder 13 is extended, the first connecting fixture 1 and the second connecting fixture 5 are subjected to an inward squeezing force, and the first spring plate 8 and the second spring plate 10 are rapidly bent and deformed inward; when the loading cylinder 13 is retracted, the first connecting fixture 1 and the second connecting fixture 5 are subjected to an outward stretching force, and the first spring plate 8 and the second spring plate 10 are rapidly bent and deformed outward; regardless of whether the first spring plate 8 and the second spring plate 10 are deformed inward or outward, the load impact fed back to the tension sensor 11 will be effectively buffered intuitively, and the energy is absorbed by the deformation of the first spring plate 8 and the second spring plate 10, thereby effectively reducing the load impact between external parts and improving the life of external parts.

[0026] The existing technology uses sensor feedback controller to calculate and control the actuator to perform acceleration and deceleration. Although it can control the load impact of the loading process, it is easily affected by changes in external conditions due to the complex system structure and extremely high requirements on the accuracy and response of related components. Different control parameters need to be adapted for loading impacts with different loads and different motion accelerations. Therefore, compared with this solution, the present solution has the advantages of simple structure, wide range of application and stable buffering.

[0027] Embodiment 2:

[0028] This embodiment further expands the connection part based on the above embodiment. Figure 1As shown, the first connection unit includes a first buffer column 4 and a first back-tightening nut 3. The two ends of the first buffer column 4 are respectively inserted into the first spring plate 8 and the second spring plate 10, and connecting threads are provided at both ends; the first buffer column 4 is connected to the first spring plate 8 and the second spring plate 10 by screwing two first back-tightening nuts 3 on the connecting threads.

[0029] The second connection unit includes a second buffer column 9 and a second back-tightening nut 7. The two ends of the second buffer column 9 are respectively inserted into the first spring plate 8 and the second spring plate 10, and connecting threads are provided at both ends. The second buffer column 9 is connected to the first spring plate 8 and the second spring plate 10 by screwing two second back-tightening nuts 7 on the connecting threads.

[0030] The detachable connection mode facilitates the replacement of the specifications of the first spring plate 8 and the second spring plate 10 and the adjustment of their elastic coefficients.

[0031] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0032] Embodiment 3:

[0033] This embodiment is further expanded on the basis of the above embodiment. Figure 1 As shown, the first spring plate 8 and the second spring plate 10 are both provided with notches, and the first buffer column 4 and the second buffer column 9 are both inserted into the corresponding notches; by adjusting the distance between the first connecting unit and the second connecting unit, the toughness of the buffer assembly can be adjusted.

[0034] After selecting the first spring plate 8 and the second spring plate 10 of appropriate specifications according to the operation scenario, the spacing between the first buffer column 4 and the second buffer column 9 can be further adjusted to achieve impact buffering under different loads.

[0035] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0036] Embodiment 4:

[0037] This embodiment is further expanded on the basis of the above embodiment. The connecting threads at both ends of the first buffer column 4 are arranged with opposite rotation directions; the connecting threads at both ends of the second buffer column 9 are arranged with opposite rotation directions; the first back-tightening nut 3 and the second back-tightening nut 7 are both gasket type.

[0038] The gasket-type first back-tightening nut 3 and the second back-tightening nut 7 can improve the connection stability between the first spring plate 8, the second spring plate 10 and the connecting part; and the opposite rotation direction of the connecting thread is set to facilitate installation; after the first buffer column 4 and the second buffer column 9 are inserted into the first spring plate 8 and the second spring plate 10, tightening can be achieved by directly twisting the two first back-tightening nuts 3 or the two second back-tightening nuts 7 in reverse, without limiting the first buffer column 4 and the second buffer column 9.

[0039] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0040] Embodiment 5:

[0041] This embodiment is further extended on the basis of the above embodiment, and the length of the first buffer column 4 and the second buffer column 9 can be adjusted. During installation, the length adjustment function of the first buffer column 4 and the second buffer column 9 is unlocked; the first connecting tool 1 and the second connecting tool 5 are respectively installed on the external parts; then the length adjustment function of the first buffer column 4 and the second buffer column 9 is locked, so as to facilitate its installation between the two external parts. At the same time, adjusting the length of the first buffer column 4 and the second buffer column 9 can also prevent the first spring plate 8 and the second spring plate 10 from colliding with each other when bending and deforming inward.

[0042] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0043] Embodiment 6:

[0044] This embodiment is further expanded on the basis of the above embodiment. Figure 1 As shown, the first connecting tool 1 is installed on the second spring plate 10 by the first fixing screw 2, and the second connecting tool 5 is installed on the first spring plate 8 by the second fixing screw 6. The detachable connection method facilitates the replacement of the first spring plate 8 and the second spring plate 10.

[0045] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An elastic loading buffer mechanism, characterized in that: It comprises a first connecting tool (1), one end of the first connecting tool (1) is connected to the buffer component, and the other end is connected to the external load; A buffer assembly comprises a first spring plate (8), a second spring plate (10), and a connecting portion, wherein the first spring plate (8) and the second spring plate (10) are connected together through the connecting portion; the connecting portion comprises a first connecting unit and a second connecting unit; A second connecting tool (5), one end of the second connecting tool (5) is connected to the buffer assembly, and the other end is connected to the external load; The first connecting fixture (1) and the second connecting fixture (5) are respectively distributed on both sides of the buffer component and are located in the middle of the first connecting unit and the second connecting unit. When the first connecting fixture (1) and the second connecting fixture (5) are subjected to an inward squeezing force transmitted by an external load, the first spring plate (8) and the second spring plate (10) are rapidly bent and deformed inward; conversely, when the first connecting fixture (1) and the second connecting fixture (5) are subjected to an outward tensile force transmitted by an external load, the first spring plate (8) and the second spring plate (10) are rapidly bent and deformed outward; this reciprocating process is repeated to achieve a buffering effect on impact force.

2. The elastic loading buffer mechanism according to claim 1, characterized in that: The first connection unit comprises a first buffer column (4) and a first back-tightening nut (3); the two ends of the first buffer column (4) are respectively inserted into the first spring plate (8) and the second spring plate (10), and the two ends are provided with connecting threads; the first buffer column (4) is connected to the first spring plate (8) and the second spring plate (10) by screwing the two first back-tightening nuts (3) onto the connecting threads.

3. The elastic loading buffer mechanism according to claim 2, characterized in that: The second connection unit comprises a second buffer column (9) and a second back-tightening nut (7); the two ends of the second buffer column (9) are respectively inserted into the first spring plate (8) and the second spring plate (10), and the two ends are provided with connecting threads; the second buffer column (9) is connected to the first spring plate (8) and the second spring plate (10) by screwing the two second back-tightening nuts (7) onto the connecting threads.

4. The elastic loading buffer mechanism according to claim 3, characterized in that: The first spring plate (8) and the second spring plate (10) are both provided with notches, and the first buffer column (4) and the second buffer column (9) are both inserted into the corresponding notches; the toughness of the buffer assembly is adjusted by adjusting the distance between the first connecting unit and the second connecting unit.

5. The elastic loading buffer mechanism according to claim 3, characterized in that: The connecting threads arranged at both ends of the first buffer column (4) have opposite rotation directions; the connecting threads arranged at both ends of the second buffer column (9) have opposite rotation directions; and the first back-tightening nut (3) and the second back-tightening nut (7) are both of the gasket type.

6. The elastic loading buffer mechanism according to claim 3, characterized in that: The lengths of the first buffer column (4) and the second buffer column (9) are adjustable.

7. The elastic loading buffer mechanism according to claim 1, characterized in that: The first connecting tool (1) is mounted on the second spring plate (10) via a first fixing screw (2), and the second connecting tool (5) is mounted on the first spring plate (8) via a second fixing screw (6).

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