A vibration table impact force testing device

Abstract

This invention discloses a vibration table impact force testing device, applied in the field of vibration table testing device technology. The key technical features are: a test frame and a horizontal test table fixedly connected to the test frame along the horizontal direction; a horizontal mounting base is movably connected to the horizontal test table based on a horizontal test reset component; a vertical suspension seat for abutting the vibration table surface is movably connected to the horizontal mounting base along the vertical direction based on a suspension component; a vertical impact testing component for testing vertical impact force is fixedly connected between the horizontal mounting base and the vertical suspension seat; the technical effect is: improved efficiency and accuracy of vibration table impact force testing.

Description

Technical Field

[0001] This invention relates to the field of vibration table testing equipment technology, and in particular to a vibration table impact force testing equipment. Background Technology

[0002] A vibrating table, widely used in automated production lines for material orientation and arrangement, automatically adjusts disordered bulk materials to a uniform orientation and outputs them in an orderly manner along a predetermined direction through vibration. The vibrating table uses a pulse electromagnet installed at the bottom of the disc as the excitation source. When a half-wave rectified alternating current is applied to the electromagnet, electromagnetic attraction is generated during the positive half-cycle, and disappears during the negative half-cycle, forming an intermittent pulse attraction that drives the vibrating table to perform high-frequency reciprocating motion. The working base of the vibrating table is typically supported by multiple sets of tilted leaf springs. When the electromagnet's pulse excitation force acts on the disc, the disc, guided by the springs, generates a composite motion of torsional and vertical vibration: the vertical impact force causes the material to undergo a slight throwing motion within the disc, detaching it from the bottom surface; the horizontal impact force causes the material to undergo directional tangential sliding and climbing motion along the disc's spiral track. By adjusting the half-wave rectified voltage or pulse frequency of the electromagnet, the amplitude of the excitation force can be changed, thereby adjusting the magnitude of the vertical and horizontal impact forces.

[0003] However, due to the influence of various factors such as electromagnet aging and spring fatigue on the impact force of the vibration table, abnormal impact force often occurs in actual use: when the vertical impact force is too small, the material cannot obtain sufficient throwing height, resulting in the material remaining at the bottom of the pan or insufficient material turnover; when the horizontal impact force is too small, the material's propulsion speed along the spiral track is significantly reduced, directly affecting the feeding cycle and leading to a decrease in the overall production efficiency; conversely, excessive impact force will cause the material to jump too high and the trajectory to be disordered, which will also reduce the arrangement quality; and the existing vibration table impact force testing device can only measure the vertical impact vibration and needs to be manually reset after the test, which greatly reduces the testing efficiency and thus affects the material screening efficiency and effect. Therefore, it is necessary to improve the existing vibration table impact force testing equipment to improve testing efficiency and testing accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a vibration table impact force testing device, which has the advantages of improving the efficiency and accuracy of vibration table impact force testing.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a vibration table impact force testing device, comprising a test frame and a horizontal test table fixedly connected to the test frame in a horizontal direction; a horizontal mounting seat is movably connected to the horizontal test table based on a horizontal test reset component, and a vertical suspension seat for abutting against the vibration table surface is movably connected to the horizontal mounting seat in a vertical direction based on a suspension component; a vertical impact test component for testing vertical impact force is fixedly connected between the horizontal mounting seat and the vertical suspension seat.

[0006] The present invention is further configured such that: the horizontal test reset assembly includes a circular test plate concentrically fixed to the top of the horizontal mounting base and a horizontal movable cavity concentrically opened within the horizontal test platform, the diameter of the horizontal movable cavity being larger than the diameter of the circular test plate and the circular test plate being horizontally movably connected within the horizontal movable cavity; at least three sets of horizontal impact test assemblies are uniformly arranged circumferentially between the circular test plate and the horizontal movable cavity; and a reset spring is concentrically sleeved and connected on the horizontal impact test assembly to drive the circular test plate to reset.

[0007] The present invention is further configured such that: the horizontal impact testing assembly includes a horizontal test rod fixedly connected to the side wall of the circular test plate along the horizontal direction and a horizontal test sleeve fixedly connected to the inner wall of the horizontal movable cavity. The horizontal test rod is concentrically slidably connected inside the horizontal test sleeve. A horizontal pressure sensor for detecting horizontal impact force is fixedly connected to one end of the horizontal test sleeve away from the horizontal test rod. A horizontal test spring is provided between the horizontal pressure sensor and the horizontal test rod. A first positioning contact sensor for detecting the sliding distance of the horizontal test rod is also fixedly connected to the side wall of the horizontal test sleeve.

[0008] The present invention is further configured such that: 6 sets of the horizontal impact test components are arranged circumferentially between the circular test plate and the horizontal movable cavity.

[0009] The present invention is further configured such that: the suspension assembly includes at least four suspension link assemblies evenly spaced along the circumferential direction between the horizontal mounting base and the vertical suspension base; each suspension link assembly includes a first suspension hinge rod with its head end hinged to the horizontal mounting base and a second suspension hinge rod with its tail end hinged to the vertical suspension base; the tail end of the first suspension hinge rod and the head end of the second suspension hinge rod are hinged at a point.

[0010] The present invention is further configured such that: the vertical impact testing assembly includes a vertical test rod fixedly connected to the vertical suspension seat along the vertical direction and a vertical test sleeve fixedly connected to the horizontal mounting seat along the vertical direction; the vertical test rod is concentrically slidably connected inside the vertical test sleeve; a vertical pressure sensor for detecting vertical impact force is fixedly connected to one end of the vertical test sleeve away from the vertical test rod; a vertical test spring is provided between the vertical pressure sensor and the vertical test rod; and a second positioning contact sensor for detecting the sliding distance of the vertical test rod is also fixedly connected to the side wall of the vertical test sleeve.

[0011] The present invention is further configured such that: a counterweight block is fixedly connected to the center of the vertical suspension seat to maintain the suspension state and achieve vertical repositioning.

[0012] The present invention is further configured such that: 6 sets of the suspension connecting rod assemblies are evenly arranged circumferentially between the horizontal mounting base and the vertical suspension base.

[0013] The present invention is further configured such that: a friction pad for increasing the friction of the test surface is attached to the bottom surface of the vertical suspension seat.

[0014] The present invention is further configured such that a plurality of locking casters are fixedly connected to the test frame.

[0015] In summary, the present invention has the following beneficial effects: 1. By setting up a horizontal test reset component and a vertical impact test component, and setting a suspension component between the horizontal mounting base and the vertical suspension base, the vertical and horizontal impact forces output by the vibration table surface can be collected simultaneously during the same test, improving test efficiency. In the horizontal direction, the horizontal test reset component uses several reset springs circumferentially arranged between the circular test plate and the horizontal movable cavity to reset the horizontal mounting base. In the vertical direction, the suspension component uses a suspension connecting rod assembly and a counterweight block to achieve gravity reset of the vertical suspension base. When the vibration table applies vertical and horizontal impact forces to the vertical suspension base, the vertical impact force drives the vertical suspension base upward, thus achieving suspension. The linkage assembly retracts upwards, while the horizontal impact force is transmitted from the vertical suspension seat to the horizontal mounting seat via the suspension assembly, driving the corresponding return spring to retract. At this time, the horizontal test return assembly and the vertical impact test assembly measure the magnitude of the horizontal and vertical impact forces respectively. When resetting, the vertical suspension seat will automatically fall and reset due to the weight of the suspension linkage assembly, the vertical suspension seat, and the counterweight block. At the same time, the return spring drives the circular test plate and the horizontal mounting seat to reset. After the reset is completed, the vertical suspension plate remains in the initial test position, so it can automatically reset without manual intervention, realizing continuous impact force testing at the same position of the vibration table, which greatly improves the accuracy of test data and the efficiency of testing. 2. The horizontal impact testing assembly uses a horizontal pressure sensor installed inside the test sleeve and a horizontal test spring between the sensor and the horizontal test rod. A first positioning contact sensor is installed on the side wall of the horizontal test sleeve to detect the sliding distance of the horizontal test rod. The horizontal impact force causes the circular test plate to move in the vibration direction, thereby compressing the horizontal test spring. The horizontal test spring directly measures the impact force transmitted by the spring, avoiding the cumulative error caused by indirectly calculating the impact force through acceleration integration. At the same time, the sliding distance of the horizontal test rod is detected by the first positioning contact sensor, ensuring that the impact force measurement is always within the linear working range of the spring, avoiding the reduction in test accuracy due to excessive displacement, and ensuring the accuracy of the test. The vertical impact testing assembly works similarly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a cross-sectional view of the horizontal test reset assembly in this embodiment; Figure 3 yes Figure 2 Enlarged schematic diagram of part A; Figure 4 This is a structural cross-sectional view of the vertical impact test assembly in this embodiment.

[0017] Reference numerals: 1. Test frame; 2. Horizontal test platform; 3. Horizontal test reset assembly; 31. Circular test plate; 32. Horizontal movable cavity; 33. Horizontal impact test assembly; 331. Horizontal test rod; 332. Horizontal test sleeve; 333. Horizontal pressure sensor; 334. Horizontal test spring; 335. First position contact sensor; 34. Reset spring; 4. Horizontal mounting base; 5. Suspension assembly; 51. First suspension hinge rod; 52. Second suspension hinge rod; 53. Counterweight block; 6. Vertical suspension seat; 7. Vertical impact test assembly; 71. Vertical test rod; 72. Vertical test sleeve; 73. Vertical pressure sensor; 74. Vertical test spring; 75. Second position contact sensor; 8. Friction pad; 9. Locking caster wheel. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example: refer to Figure 1 A vibration table impact force testing device includes a test frame 1 and a horizontal test table 2 fixedly connected to the test frame 1 in the horizontal direction. A horizontal mounting base 4 is movably connected to the horizontal test table 2 based on a horizontal test reset component 3. A vertical suspension seat 6 for abutting against the vibration table surface is vertically and movably connected to the horizontal mounting base 4 based on a suspension component 5. A vertical impact testing component 7 for testing vertical impact force is fixedly connected between the horizontal mounting base 4 and the vertical suspension seat 6. A friction pad 8 for increasing the friction of the test surface is attached to the bottom surface of the vertical suspension seat 6. The suspension component 5 ensures that the vertical suspension seat 6 always abuts against the vibration table surface. The vibration table drives the vertical suspension seat 6 to vibrate simultaneously in the vertical and horizontal directions. The vertical vibration causes the vertical suspension seat 6 to rise, and the vertical impact force is measured by the vertical impact testing component 7. The horizontal vibration... The impact force is transmitted to the horizontal mounting base 4 and tested through the horizontal test reset component 3. The vertical impact test component 7 and the horizontal test reset component 3 then test the vertical and horizontal impact forces respectively. After the test, the horizontal test reset component 3 drives the horizontal mounting base 4 and the vertical suspension seat 6 to reset horizontally. Simultaneously, the vertical suspension seat 6 is reset vertically by the weight of the suspension component 5 and the vertical suspension seat 6 itself. This ensures that the vertical suspension plate remains in its initial test position after reset, thus achieving automatic reset without manual intervention. This enables continuous impact force testing at the same location on the vibration table, greatly improving the accuracy and efficiency of the test data. The friction pad 8 ensures that the horizontal and vertical impact forces from the vibration table act stably on the surface of the vertical suspension seat 6, guaranteeing the accuracy of the impact force test results.

[0020] refer to Figure 2 and Figure 3 Specifically, the horizontal test reset assembly 3 includes a circular test plate 31 concentrically fixed to the top of the horizontal mounting base 4 and a horizontal movable cavity 32 concentrically opened in the horizontal test table 2. The diameter of the horizontal movable cavity 32 is larger than the diameter of the circular test plate 31, and the circular test plate 31 is horizontally movably connected in the horizontal movable cavity 32. At least three sets of horizontal impact test assemblies 33 are uniformly arranged circumferentially between the circular test plate 31 and the horizontal movable cavity 32. A reset spring 34 is concentrically sleeved on the horizontal impact test assembly 33 to drive the circular test plate 31 to reset. When the horizontal mounting base 4 is subjected to a horizontal impact, it will drive one or more impact force test assemblies and the reset spring 34 in the impact direction to contract. At this time, the magnitude and direction of the impact force in the horizontal direction of the vibration table can be obtained by calculating the resultant force of the impact force test assemblies. After the test is completed, the reset spring 34 drives the circular test plate 31 to reset so that the circular test plate 31 can be kept in the center of the horizontal movable cavity 32. The horizontal impact testing assembly 33 includes a horizontal test rod 331 fixedly connected to the side wall of a circular test plate 31 along the horizontal direction, and a horizontal test sleeve 332 fixedly connected to the inner wall of a horizontal movable cavity 32. The horizontal test rod 331 is concentrically slidably connected within the horizontal test sleeve 332. A horizontal pressure sensor 333 for detecting horizontal impact force is fixedly connected to one end of the horizontal test sleeve 332 away from the horizontal test rod 331. A horizontal test spring 334 is provided between the horizontal pressure sensor 333 and the horizontal test rod 331. A horizontal test spring 334 is also fixedly connected to the side wall of the horizontal test sleeve 332. The first positioning contact sensor 335 detects the sliding distance of the horizontal test rod 331. The horizontal impact force drives the circular test plate 31 to move in the vibration direction, thereby compressing the horizontal test spring 334. The horizontal test spring 334 directly measures the impact force transmitted by the spring, avoiding the cumulative error caused by indirectly calculating the impact force through acceleration integration. At the same time, the first positioning contact sensor 335 detects the sliding distance of the horizontal test rod 331, thereby ensuring that the impact force measurement is always within the linear working range of the spring, avoiding the reduction of test accuracy due to excessive displacement, and ensuring the accuracy of the test. In this embodiment, six sets of horizontal impact test components 33 are circumferentially arranged between the circular test plate 31 and the horizontal movable cavity 32. The six sets of horizontal impact test components 33 can detect the horizontal impact force components in different directions, and then synthesize the magnitude and direction of the actual horizontal impact force, thereby achieving an accurate assessment of whether the tangential thrust of the spiral track meets the requirements for directional material conveying.

[0021] refer to Figure 1Specifically, the suspension assembly 5 includes at least four suspension link assemblies evenly spaced along the circumference between the horizontal mounting base 4 and the vertical suspension seat 6. Each suspension link assembly includes a first suspension hinge rod 51 with its head hinged to the horizontal mounting base 4 and a second suspension hinge rod 52 with its tail hinged to the vertical suspension seat 6. The tail end of the first suspension hinge rod 51 and the head end of the second suspension hinge rod 52 are hinged at a single point. A counterweight block 53 is fixedly connected at the center of the vertical suspension seat 6 to maintain the suspension state and achieve vertical abutment and reset. When the vertical suspension seat 6 rises, the linkage structure composed of the first suspension hinge rod 51 and the second suspension hinge rod 52 deforms vertically without causing horizontal deformation. At the same time, it can generate as little rotational friction as possible, reducing the impact on the measurement results of the vertical impact force. Furthermore, the weight of the first suspension hinge rod 51 and the second suspension hinge rod 52 will further drive the vertical suspension seat 6 to descend and reset, thereby improving the efficiency of the impact force test. In this embodiment, six sets of suspension rod assemblies are evenly arranged circumferentially between the horizontal mounting base 4 and the vertical suspension base 6.

[0022] refer to Figure 1 and Figure 4 Specifically, the vertical impact test assembly 7 includes a vertical test rod 71 fixedly connected to the vertical suspension seat 6 along the vertical direction and a vertical test sleeve 72 fixedly connected to the horizontal mounting seat 4 along the vertical direction. The vertical test rod 71 is concentrically slidably connected inside the vertical test sleeve 72. A vertical pressure sensor 73 for detecting vertical impact force is fixedly connected to one end of the vertical test sleeve 72 away from the vertical test rod 71. A vertical test spring 74 is provided between the vertical pressure sensor 73 and the vertical test rod 71. A second positioning contact sensor 75 for detecting the sliding distance of the vertical test rod 71 is also fixedly connected to the side wall of the vertical test sleeve 72. The vertical impact test assembly 7 is similar to the horizontal impact test assembly 33.

[0023] refer to Figure 1 Specifically, the test frame 1 is fixedly connected with several locking casters 9, which drive the impact force testing device to move as a whole to switch between different vibration table positions.

[0024] Brief description of the usage process: The vibration table drives the vertical suspension seat 6 to vibrate simultaneously in the vertical and horizontal directions. The vertical vibration causes the vertical suspension seat 6 to rise and the vertical impact force is measured by the vertical impact force testing component. The horizontal vibration is transmitted to the horizontal mounting seat 4 and the horizontal test reset component 3 is used to test the horizontal impact force. After the test is completed, the horizontal test reset component 3 drives the horizontal mounting seat 4 and the vertical suspension seat 6 to reset in the horizontal direction. At the same time, the vertical suspension seat 6 is reset in the vertical direction by the suspension component 5 and the weight of the vertical suspension seat 6 itself.

[0025] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make inventive modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A vibration table impact force testing device, comprising a test frame (1) and a horizontal test table (2) fixedly connected to the test frame (1) in a horizontal direction; characterized in that, A horizontal mounting base (4) is movably connected to the horizontal test reset assembly (3) on the horizontal test platform (2). A vertical suspension seat (6) for abutting the vibration table surface is movably connected to the horizontal mounting base (4) along the vertical direction based on the suspension assembly (5). A vertical impact test assembly (7) for testing vertical impact force is fixedly connected between the horizontal mounting base (4) and the vertical suspension seat (6).

2. The vibration table impact force testing device according to claim 1, characterized in that, The horizontal test reset assembly (3) includes a circular test plate (31) concentrically fixed to the top of the horizontal mounting base (4) and a horizontal movable cavity (32) concentrically opened in the horizontal test platform (2). The diameter of the horizontal movable cavity (32) is larger than the diameter of the circular test plate (31), and the circular test plate (31) is horizontally movably connected in the horizontal movable cavity (32). At least three sets of horizontal impact test assemblies (33) are uniformly arranged circumferentially between the circular test plate (31) and the horizontal movable cavity (32). A reset spring (34) is concentrically sleeved on the horizontal impact test assembly (33) to drive the circular test plate (31) to reset.

3. The vibration table impact force testing device according to claim 2, characterized in that, The horizontal impact test assembly (33) includes a horizontal test rod (331) fixedly connected to the side wall of the circular test plate (31) along the horizontal direction and a horizontal test sleeve (332) fixedly connected to the inner wall of the horizontal movable cavity (32). The horizontal test rod (331) is concentrically slidably connected inside the horizontal test sleeve (332). A horizontal pressure sensor (333) for detecting horizontal impact force is fixedly connected to one end of the horizontal test sleeve (332) away from the horizontal test rod (331). A horizontal test spring (334) is provided between the horizontal pressure sensor (333) and the horizontal test rod (331). A first positioning contact sensor (335) for detecting the sliding distance of the horizontal test rod (331) is also fixedly connected to the side wall of the horizontal test sleeve (332).

4. The vibration table impact force testing device according to claim 2, characterized in that, Six sets of horizontal impact test components (33) are arranged circumferentially between the circular test plate (31) and the horizontal movable cavity (32).

5. The vibration table impact force testing device according to claim 1, characterized in that, The suspension assembly (5) includes at least four suspension link assemblies evenly spaced along the circumferential direction between the horizontal mounting base (4) and the vertical suspension base (6). Each suspension link assembly includes a first suspension hinge rod (51) with its head end hinged to the horizontal mounting base (4) and a second suspension hinge rod (52) with its tail end hinged to the vertical suspension base (6). The tail end of the first suspension hinge rod (51) and the head end of the second suspension hinge rod (52) are hinged at a point.

6. The vibration table impact force testing device according to claim 5, characterized in that, The vertical impact test assembly (7) includes a vertical test rod (71) fixedly connected to the vertical suspension seat (6) along the vertical direction and a vertical test sleeve (72) fixedly connected to the horizontal mounting seat (4) along the vertical direction. The vertical test rod (71) is concentrically slidably connected inside the vertical test sleeve (72). A vertical pressure sensor (73) for detecting vertical impact force is fixedly connected to one end of the vertical test sleeve (72) away from the vertical test rod (71). A vertical test spring (74) is provided between the vertical pressure sensor (73) and the vertical test rod (71). A second positioning contact sensor (75) for detecting the sliding distance of the vertical test rod (71) is also fixedly connected to the side wall of the vertical test sleeve (72).

7. The vibration table impact force testing device according to claim 5, characterized in that, The vertical suspension seat (6) is fixedly connected to a counterweight block (53) to maintain the suspension state so as to achieve vertical repositioning.

8. The vibration table impact force testing device according to claim 5, characterized in that, Six sets of suspension rod assemblies are evenly arranged circumferentially between the horizontal mounting base (4) and the vertical suspension base (6).

9. The vibration table impact force testing device according to claim 1, characterized in that, The bottom surface of the vertical suspension seat (6) is fitted with a friction pad (8) for increasing the friction of the test surface.

10. The vibration table impact force testing device according to claim 1, characterized in that, Several locking casters (9) are fixedly connected to the test frame (1).

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