Lifting beam vibration balance and stability testing device

Abstract

The present invention belongs to the field of vibration detection technology, and is particularly a device for testing the vibration balance and stability of a lifting beam, comprising an annular block, a protective mechanism detachably mounted on the bottom of the annular block, a detection mechanism fixedly mounted on the bottom of the protective mechanism, a bracket fixedly mounted on the top of the annular block, a magnetic table seat fixedly mounted on the top of the bracket, a cross universal mechanism rollingly mounted in the annular block, and a cross universal mechanism rotatably mounted on the cross universal mechanism. The present invention suspends and adsorbs the device on the lifting beam body, and can drive the swing mechanism to move up and down and swing in the horizontal direction when the lifting beam body vibrates. The swing amplitude, swing direction and swing frequency of the counterweight can be observed through a camera, so that the vibration amplitude, vibration direction and vibration frequency of the lifting beam body can be detected, so that the vibration balance and stability detection of the lifting beam body can be completed.

Description

Technical Field

[0001] The invention relates to the technical field of vibration detection, and in particular to a device for testing the vibration balance and stability of a lifting beam. Background Art

[0002] Electric single-beam crane (crane) is a common lifting machinery, including a beam frame, a trolley, a car, an electric hoist and a control mechanism. The beam frame is composed of end beams on both sides and a main beam connecting the end beams. The end beams are driven by the trolley to run on the end beam track, and the electric hoist runs on the main beam track with the trolley, thereby lifting the main body of the lifting beam frame at the corresponding position through the hook.

[0003] When the end beam is running on the end beam track with a heavy object suspended, the end beam is prone to vibration. If the vibration frequency and amplitude are too large, safety will be impaired. Existing plans usually use the vibration of the end beam to drive the test component to swing. The vibration data of the end beam can be obtained by detecting the test component to measure the swing frequency, amplitude and direction, and the vibration stability of the end beam can be tested easily. The test component is usually connected to other components with bearings, but under high-frequency vibration, the grease in the bearing is prone to uneven distribution, which makes the test component unable to swing synchronously with the vibration of the end beam. For this reason, a vibration balance and stability test device for a lifting beam frame is proposed. Summary of the invention

[0004] In order to solve the shortcomings in the prior art, the present invention proposes a lifting beam vibration balance and stability testing device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a lifting beam vibration balance and stability testing device, comprising an annular block, a protective mechanism is detachably installed on the bottom of the annular block, a detection mechanism is fixedly installed on the bottom of the protective mechanism, a bracket is fixedly installed on the top of the annular block, a magnetic table base is fixedly installed on the top of the bracket, a cross universal mechanism is rollingly installed in the annular block, a U-shaped frame is rotatably installed on the cross universal mechanism, a swing mechanism is provided below the U-shaped frame, an extrusion mechanism 2 is provided between the cross universal mechanism and the bracket, and an extrusion mechanism 1 is provided between the cross universal mechanism and the U-shaped frame.

[0006] Preferably, the protection mechanism includes a protection tube detachably mounted on the annular block, a base plate is fixedly mounted on the bottom of the protection tube, the detection mechanism includes a frame fixedly mounted on the bottom of the base plate, a camera is fixedly mounted on the frame, the swing mechanism includes a telescopic rod fixedly mounted on the bottom of the U-shaped frame, a counterweight is fixedly mounted on the bottom end of the piston rod of the telescopic rod, and the same spring is fixedly mounted between the counterweight and the U-shaped frame.

[0007] Preferably, the cross universal mechanism includes a round box one coaxially arranged with the annular block, two round boxes two and two round boxes three are fixedly installed through the round box one, the two round boxes two and the two round boxes three are connected with the round box one, and the two round boxes three are rotatably sleeved with a needle roller bearing without an inner ring, an annular groove is provided on the inner side of the annular block, and the two needle roller bearings without an inner ring are rollingly installed in the annular groove, and two needle roller bearings without an inner ring are fixedly installed through the U-shaped frame, and the two needle roller bearings without an inner ring are rotatably sleeved on the two round boxes two respectively.

[0008] Preferably, a baffle ring 1 and a baffle ring 2 are fixedly installed on the inner wall of the round box 1, and the two round boxes 2 and the two round boxes 3 are located between the baffle ring 1 and the baffle ring 2. A piston plate 1 and a piston plate 2 are slidably installed in the round box 1, and the baffle ring 1 and the baffle ring 2 are located between the piston plate 1 and the piston plate 2. A rack 2 and a rack 1 are fixedly installed on the side of the piston plate 2 and the piston plate 1 close to each other, respectively. The rack 2 and the rack 1 are meshed and connected with the same gear, and a rotating shaft is fixedly installed on the gear. The two ends are rotatably connected with two circular boxes two respectively, the circular box two is provided with a plurality of oil outlet holes one distributed in a circular array, the plurality of oil outlet holes one are all located on the inner side of the needle roller bearing without an inner ring, the circular box three is provided with a plurality of oil outlet holes two distributed in a circular array, the plurality of oil outlet holes two are all located on the inner side of the needle roller bearing without an inner ring, the top of the piston plate one is fixed with a plurality of guide rods two penetrating the baffle ring two and sliding with the baffle ring two, the bottom of the piston plate two is fixed with a plurality of guide rods one penetrating the baffle ring one and sliding with the baffle ring one.

[0009] Preferably, the extrusion mechanism 1 includes a concave disc 1 fixedly mounted on the U-shaped frame, the extrusion mechanism 1 also includes a one-way bearing 2, the one-way bearing 2 includes an inner ring and an outer ring, the outer ring of the one-way bearing 2 penetrates the bottom inner wall of the round box 1 and is fixedly connected to the round box 1, a round block 1 is fixedly mounted on the inner ring of the one-way bearing 2, a prism 1 is slidably mounted on the round block 1, a baffle 1 is fixedly mounted on the bottom end of the prism 1, a roller 1 in contact with the concave disc 1 is fixedly mounted on the bottom of the baffle 1, a partition 1 is fixedly mounted on the top of the prism 1, a cylinder 1 is fixedly mounted on the top of the partition 1, a cylinder 1 is sleeved on the cylinder 1, a one-way bearing 1 is sleeved on the cylinder 1, the one-way bearing 1 is provided with an outer ring and an inner ring, the inner ring of the one-way bearing 1 is fixedly sleeved on the cylinder 1, the outer ring of the one-way bearing 1 is fixedly connected to the bottom of the piston plate 1, and the same spring 2 is fixedly mounted between the round block 1 and the baffle 1.

[0010] Preferably, the extrusion mechanism 2 includes a concave disc 2 fixedly connected to the bracket, the extrusion mechanism 2 also includes a one-way bearing 4, the one-way bearing 4 includes an inner ring and an outer ring, the outer ring of the one-way bearing 4 penetrates the top inner wall of the round box 1 and is fixedly connected to the round box 1, a round block 2 is fixedly installed on the inner ring of the one-way bearing 4, a prism 2 is slidably installed through the round block 2, a partition 2 is fixedly installed on the bottom end of the prism 2, a cylinder 2 is fixedly installed on the bottom of the partition 2, a cylinder 2 is sleeved on the cylinder 2, a one-way bearing 3 is sleeved on the cylinder 2, the one-way bearing 3 is provided with an outer ring and an inner ring, the inner ring of the one-way bearing 3 is fixedly sleeved on the cylinder 2, the outer ring of the one-way bearing 3 is fixedly connected to the top of the piston plate 2, a baffle 2 is fixedly installed on the top of the prism 2, a roller 2 in contact with the concave disc 2 is fixedly installed on the top of the baffle 2, and the same spring 3 is fixedly installed between the round block 2 and the baffle 2.

[0011] Preferably, the cylinder is provided with a plurality of spiral guide grooves distributed in a circular array, and the inner wall of the cylinder is fixedly provided with a plurality of spiral guide ribs matched with the plurality of spiral guide grooves.

[0012] Preferably, the second cylinder is provided with a plurality of spiral guide grooves 2 distributed in a circular array, and the inner wall of the second cylinder is fixedly mounted with a plurality of spiral guide ribs 2 matching the plurality of spiral guide grooves 2.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention suspends and adsorbs the device on the main body of the lifting beam frame, and can drive the swing mechanism to move up and down and swing in the horizontal direction when the main body of the lifting beam frame vibrates. The swing amplitude, swing direction and swing frequency of the counterweight can be observed through the camera, so that the vibration amplitude, vibration direction and vibration frequency of the main body of the lifting beam frame can be detected, thereby completing the detection of the vibration balance and stability of the main body of the lifting beam frame;

[0015] 2. Through the cooperation of extrusion mechanism 1 and extrusion mechanism 2, the grease in round box 2 and round box 3 can be squeezed out to ensure that the grease is always evenly distributed between round box 3 and inner ringless needle roller bearing 1 and between round box 2 and inner ringless needle roller bearing 2, thereby ensuring the smooth rotation of round box 2 and the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the lifting beam vibration balance and stability testing device proposed by the present invention;

[0017] Figure 2 A side cross-sectional view of the lifting beam vibration balance and stability testing device proposed by the present invention;

[0018] Figure 3 It is a partial structural schematic diagram of the lifting beam vibration balance and stability testing device proposed by the present invention;

[0019] Figure 4 It is a partial side sectional view of the lifting beam vibration balance and stability testing device proposed by the present invention;

[0020] Figure 5 It is a structural schematic diagram of the cross universal mechanism in the lifting beam vibration balance and stability testing device proposed by the present invention;

[0021] Figure 6 for Figure 4 A schematic diagram of the enlarged structure of part A;

[0022] Figure 7 for Figure 4 A schematic diagram of the enlarged structure of part B;

[0023] Figure 8 It is a partial structural schematic diagram of the extrusion mechanism 1 in the lifting beam vibration balance and stability testing device proposed by the present invention;

[0024] Fig. 9 It is a partial structural schematic diagram of the extrusion mechanism 2 in the lifting beam vibration balance and stability testing device proposed by the present invention;

[0025] Fig.10 The figure is a working schematic diagram of the lifting beam vibration balance and stability testing device proposed by the present invention.

[0026] In the figure: 1. Ring block; 11. Ring groove; 2. Protection mechanism; 21. Protection cylinder; 22. Base plate; 3. Detection mechanism; 31. Frame; 32. Camera; 4. Bracket; 5. Magnetic base; 6. Cardan cross mechanism; 61. First round box; 62. Second round box; 621. First oil outlet hole; 63. Third round box; 631. Second oil outlet hole; 64. Needle roller bearing without inner ring one; 65. Needle roller bearing without inner ring two; 66. Rotating shaft; 67. First piston plate; 68. First retaining ring; 69. Second retaining ring; 610. Second piston plate; 611. First guide rod; 612. Second guide rod; 613. First rack; 614. Second rack; 615. Gear; 7. Swing mechanism; 71. Counterweight; 72. Telescopic rod; 73. First spring; 8. First extrusion mechanism; 81. First concave disk; 82. First one-way bearing; 83. First cylinder; 831. First spiral guide rib; 84. Second one-way bearing; 85. First round block; 86. First prism; 87. First cylinder; 871. First spiral guide groove; 88. First partition; 89. First roller; 810. First baffle; 811. Second spring; 9. Second extrusion mechanism; 91. Second concave disk; 92. Third one-way bearing; 93. Second cylinder; 931. Second spiral guide rib; 94. Fourth one-way bearing; 95. Second round block; 96. Second prism; 97. Second cylinder; 971. Second spiral guide groove; 98. Second partition; 99. Second roller; 910. Second baffle; 911. Third spring; 10. U-shaped frame. Specific implementation mode

[0027] Next, the technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figure 1-Figure 10 , the present invention provides a technical solution: a vibration balance and stability test device for a lifting beam frame, including a ring block 1, a protection mechanism 2 is detachably installed at the bottom of the ring block 1, a detection mechanism 3 is fixedly installed at the bottom of the protection mechanism 2, a bracket 4 is fixedly installed at the top of the ring block 1, a magnetic base 5 is fixedly installed at the top of the bracket 4, a cardan cross mechanism 6 is rotatably installed in the ring block 1, a U-shaped frame 10 is rotatably installed on the cardan cross mechanism 6, a swing mechanism 7 is arranged below the U-shaped frame 10, a second extrusion mechanism 9 is arranged between the cardan cross mechanism 6 and the bracket 4, and a first extrusion mechanism 8 is arranged between the cardan cross mechanism 6 and the U-shaped frame 10.

[0029] The protection mechanism 2 includes a protection tube 21 detachably mounted on the annular block 1, a base plate 22 is fixedly mounted on the bottom of the protection tube 21, the detection mechanism 3 includes a frame 31 fixedly mounted on the bottom of the base plate 22, a camera 32 is fixedly mounted on the frame 31, the swing mechanism 7 includes a telescopic rod 72 fixedly mounted on the bottom of the U-shaped frame 10, a counterweight 71 is fixedly mounted on the bottom end of the piston rod of the telescopic rod 72, and a spring 73 is fixedly mounted between the counterweight 71 and the U-shaped frame 10.

[0030] Furthermore, after the device is suspended on the main body of the lifting beam frame by the vertical magnetic attraction of the annular block 1, the counterweight 71 will move up and down and swing horizontally as the main body of the lifting beam frame vibrates. The swing amplitude, swing direction and swing frequency of the counterweight 71 can be observed by the camera 32, thereby detecting the vibration amplitude, vibration direction and vibration frequency of the main body of the lifting beam frame;

[0031] The protection tube 21 and the bottom plate 22 are both made of colorless and transparent explosion-proof glass or composite material.

[0032] The cross universal mechanism 6 includes a round box 1 61 coaxially arranged with the annular block 1, two round boxes 2 62 and two round boxes 3 63 are fixedly installed through the round box 1 61, the two round boxes 2 62 and the two round boxes 3 63 are connected with the round box 1 61, and the two round boxes 3 63 are rotatably sleeved with a needle bearing 1 64 without an inner ring. An annular groove 11 is provided on the inner side of the annular block 1, and the two needle bearings 1 64 without an inner ring are rollingly installed in the annular groove 11. Two needle bearings 2 65 without an inner ring are fixedly installed through the U-shaped frame 10, and the two needle bearings 2 65 without an inner ring are rotatably sleeved on the two round boxes 2 62 respectively.

[0033] A retaining ring 1 68 and a retaining ring 2 69 are fixedly installed on the inner wall of the round box 1 61, and the two round boxes 2 62 and the two round boxes 3 63 are located between the retaining ring 1 68 and the retaining ring 2 69. A piston plate 1 67 and a piston plate 2 610 are slidably installed in the round box 1 61, and the retaining ring 1 68 and the retaining ring 2 69 are located between the piston plate 1 67 and the piston plate 2 610. A rack 2 614 and a rack 1 613 are fixedly installed on the side close to each other of the piston plate 2 610 and the piston plate 1 67, and the rack 2 614 and the rack 1 613 are meshed and connected with the same gear 615, and a rotating shaft 66 is fixedly installed on the gear 615. The two ends of the shaft 66 are rotatably connected to the two circular boxes 62 respectively. The circular box 62 is provided with a plurality of oil outlet holes 621 distributed in a circular array. The plurality of oil outlet holes 621 are all located on the inner side of the needle bearing 64 without an inner ring. The circular box 63 is provided with a plurality of oil outlet holes 631 distributed in a circular array. The plurality of oil outlet holes 631 are all located on the inner side of the needle bearing 65 without an inner ring. The top of the piston plate 67 is fixed with a plurality of guide rods 612 that penetrate the retaining ring 69 and slide with the retaining ring 69. The bottom of the piston plate 610 is fixed with a plurality of guide rods 611 that penetrate the retaining ring 68 and slide with the retaining ring 68.

[0034] The extrusion mechanism 8 includes an inner concave disc 81 fixedly mounted on the frame 10, and the extrusion mechanism 8 also includes a one-way bearing 84. The one-way bearing 84 includes an inner ring and an outer ring. The outer ring of the one-way bearing 84 penetrates the bottom inner wall of the round box 61 and is fixedly connected to the round box 61. A round block 85 is fixedly mounted on the inner ring of the one-way bearing 84. A prism 86 is slidably mounted on the round block 85. A baffle 810 is fixedly mounted on the bottom of the prism 86. A baffle 810 is fixedly mounted on the bottom of the baffle 810. The disk 81 contacts the roller 89, and a partition 88 is fixedly installed on the top of the prism 86. A cylinder 87 is fixedly installed on the top of the partition 88. A cylinder 83 is sleeved on the cylinder 87. A one-way bearing 82 is sleeved on the cylinder 83. The one-way bearing 82 has an outer ring and an inner ring. The inner ring of the one-way bearing 82 is fixedly sleeved on the cylinder 83. The outer ring of the one-way bearing 82 is fixedly connected to the bottom of the piston plate 67. A spring 811 is fixedly installed between the round block 85 and the baffle 810.

[0035] The extrusion mechanism 29 includes an inner concave disc 291 fixedly connected to the bracket 4, and the extrusion mechanism 29 also includes a one-way bearing 494, which includes an inner ring and an outer ring. The outer ring of the one-way bearing 494 penetrates the top inner wall of the round box 1 61 and is fixedly connected to the round box 1 61. A round block 295 is fixedly installed on the inner ring of the one-way bearing 494, and a prism 296 is slidably installed on the round block 295. A partition 298 is fixedly installed on the bottom end of the prism 296, and a cylinder 297 is fixedly installed on the bottom of the partition 298. The cylinder 298 is fixedly installed on the bottom of the cylinder 297. A cylinder 93 is sleeved on 97, and a one-way bearing 92 is sleeved on the cylinder 93. The one-way bearing 92 has an outer ring and an inner ring. The inner ring of the one-way bearing 92 is fixedly sleeved on the cylinder 93, and the outer ring of the one-way bearing 92 is fixedly connected to the top of the piston plate 610. A baffle 910 is fixedly installed on the top of the prism 96, and a roller 99 in contact with the concave disc 91 is fixedly installed on the top of the baffle 910. A spring 911 is fixedly installed between the round block 95 and the baffle 910.

[0036] Further, such as Figure 6 and Figure 7 As shown, due to the effect of the one-way bearing 2 84, the round block 1 85 can only rotate clockwise, but cannot rotate counterclockwise. In addition, due to the effect of the one-way bearing 1 82, the cylinder 1 83 can only rotate counterclockwise, but cannot rotate clockwise.

[0037] Due to the effect of the one-way bearing four 94, the round block two 95 can only rotate clockwise but cannot rotate counterclockwise. In addition, due to the effect of the one-way bearing three 92, the cylinder two 93 can only rotate counterclockwise but cannot rotate clockwise.

[0038] One-way oil filling valves are fixed through round box two 62 and round box three 63. By synchronously twisting roller one 89 and roller two 99 in opposite directions, piston plate one 67 and piston plate two 610 can be moved away from each other. Then, grease can be filled into round box one 61, two round boxes two 62 and two round boxes three 63 through any one of the one-way oil filling valves.

[0039] The cylinder 87 is provided with a plurality of spiral guide grooves 871 distributed in a circular array, and the inner wall of the cylinder 83 is fixedly provided with a plurality of spiral guide ribs 831 matched with the plurality of spiral guide grooves 871.

[0040] Furthermore, through the cooperation of multiple sets of spiral guide grooves 871 and spiral guide ribs 831, when the cylinder 83 cannot rotate, the cylinder 87 that rotates but cannot move up and down will drive the cylinder 83 to move up and down.

[0041] The cylinder 97 is provided with a plurality of spiral guide grooves 971 distributed in a circular array, and the inner wall of the cylinder 93 is fixedly provided with a plurality of spiral guide ribs 931 matched with the plurality of spiral guide grooves 971 .

[0042] Furthermore, through the cooperation of the plurality of sets of spiral guide grooves 971 and the spiral guide ribs 931, when the cylinder 93 cannot rotate, the cylinder 97 which rotates but cannot move up and down will drive the cylinder 93 to move up and down.

[0043] In this embodiment: when in use, the device is suspended and adsorbed on the main body of the lifting beam frame through the annular block 1. When the main body of the lifting beam frame vibrates in the horizontal direction, the counterweight 71 will swing forward, backward, left and right. During this process, the round box three 63 will drive the inner ringless needle bearing one 64 to roll in the annular groove 11, or the round box three 63 will rotate along its own axis as the center of the circle, or the U-shaped frame 10 will rotate along the axis of the two round boxes two 62 as the center of the circle. When the main body of the lifting beam frame vibrates in the vertical direction, the counterweight 71 will overcome the elastic force of the spring one 73 and move back and forth up and down;

[0044] When the frequency of the lifting beam main body vibration is too high, the grease in the inner ringless needle roller bearing 1 64 and the inner ringless needle roller bearing 2 65 is very likely to be unevenly distributed. When the two round boxes 3 63 rotate along their own axes, roller 2 99 will be pushed to move in the concave disc 2 91. At this time, roller 2 99 will push prism 2 96 and cylinder 2 97 to move downward, and the downward movement of cylinder 2 97 will push cylinder 2 93 to move downward. At this time, the one-way bearing 3 92 cannot rotate, and the downward moving cylinder 2 93 will drive piston plate 2 610 to move downward, and the downward moving piston plate 2 610 will The gear 615 is driven to rotate by the rack 2 614, and the gear 615 drives the meshing rack 1 613 to move upward, and the rack 1 613 drives the piston plate 1 67 to move upward, and the piston plate 2 610 and the piston plate 1 67 close to each other can squeeze the grease to be discharged from the multiple oil outlet holes 1 621 and the oil outlet holes 2 631, so that the grease can be evenly distributed in the needle roller bearing 1 64 without inner ring and the needle roller bearing 2 65 without inner ring, thereby reducing the friction between the round box 3 63 and the needle roller bearing 1 64 without inner ring, and between the round box 2 62 and the needle roller bearing 2 65 without inner ring;

[0045] When the rack 1 613 pulls the cylinder 1 83 to move upward, the one-way bearing 1 82 and the cylinder 1 83 cannot rotate. During the upward movement of the cylinder 1 83, the cylinder 1 87 cannot move upward and rotates. After that, when the counterweight 71 returns to the vertical state, the compressed spring 3 911 will push the roller 2 99 to move upward and reset. The roller 2 99 will drive the cylinder 2 97 to move upward and make the cylinder 2 93 rotate. However, due to the negative pressure and the adhesion of grease, the piston plate 2 610 and the piston plate 1 67 will not move.

[0046] When the crossbar 10 rotates along the axis of the two round boxes 62, the concave disc 81 pushes the roller 89 upward, and the roller 89 pushes the cylinder 87 upward through the prism 86, and the cylinder 87 pushes the cylinder 83 upward. At this time, the one-way bearing 82 cannot rotate, and the upward cylinder 87 pushes the piston plate 67 upward through the cylinder 83, and the upward rack 613 drives the gear 615 to rotate, and the gear 615 drives the rack 613 to rotate. 14 moves downward, rack gear 2 614 pulls piston plate 2 610 downward, piston plate 2 610 and piston plate 1 67 close to each other can squeeze grease to be discharged from multiple oil outlet holes 1 621 and oil outlet holes 2 631, so that grease can be evenly distributed in needle bearing 1 64 without inner ring and needle bearing 2 65 without inner ring, thereby reducing the friction between round box 3 63 and needle bearing 1 64 without inner ring and between round box 2 62 and needle bearing 2 65 without inner ring;

[0047] When the rack 2 614 pulls the piston plate 2 610 to move downward, during this process, the one-way bearing 3 92 can rotate freely, and the downwardly moving piston plate 2 610 can drive the cylinder 2 93 to rotate idly and move downward spirally. During this process, the one-way bearing 4 94 cannot rotate, thereby ensuring that the cylinder 2 97 cannot rotate synchronously with the cylinder 2 93, so that the cylinder 2 97 will not move downward, thereby ensuring that the roller 2 99 always rests on the inner wall of the concave disc 2 91. Later, when the counterweight 71 returns to the vertical state, the compressed spring 2 811 will push the roller 1 89 to move downward and reset, and the roller 1 89 will drive the cylinder 1 87 to move downward and make the cylinder 1 83 rotate. Due to the negative pressure and the adhesion of grease, the piston plate 2 610 and the piston plate 1 67 will not move.

[0048] By identifying the moving track of the counterweight 71 through the camera 32, the vibration amplitude, vibration frequency and vibration direction of the lifting beam frame body can be clearly detected.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crane beam vibration balance and stability testing device, comprising an annular block (1), characterized in that: The bottom of the annular block (1) is detachably mounted with a protection mechanism (2), the bottom of the protection mechanism (2) is fixedly mounted with a detection mechanism (3), the top of the annular block (1) is fixedly mounted with a bracket (4), the top of the bracket (4) is fixedly mounted with a magnetic meter base (5), a cross universal mechanism (6) is rotatably mounted inside the annular block (1), a yoke (10) is rotatably mounted on the cross universal mechanism (6), a swing mechanism (7) is provided below the yoke (10), a second extrusion mechanism (9) is provided between the cross universal mechanism (6) and the bracket (4), and a first extrusion mechanism (8) is provided between the cross universal mechanism (6) and the yoke (10); The protection mechanism (2) comprises a protection tube (21) detachably mounted on the annular block (1), a bottom plate (22) being fixedly mounted on the bottom of the protection tube (21), the detection mechanism (3) comprising a frame (31) fixedly mounted on the bottom of the bottom plate (22), a camera (32) being fixedly mounted on the frame (31), the swing mechanism (7) comprising a telescopic rod (72) fixedly mounted on the bottom of the U-shaped frame (10), a counterweight (71) being fixedly mounted on the bottom end of the piston rod of the telescopic rod (72), and a same spring (73) being fixedly mounted between the counterweight (71) and the U-shaped frame (10); The cross universal mechanism (6) comprises a round box one (61) coaxially arranged with the annular block (1), two round boxes two (62) and two round boxes three (63) are fixedly installed through the round box one (61), the two round boxes two (62) and the two round boxes three (63) are connected to the round box one (61), and the two round boxes three (63) are rotatably sleeved with a needle bearing one (64) without an inner ring, an annular groove (11) is provided on the inner side of the annular block (1), and the two needle bearings one (64) without an inner ring are rollingly installed in the annular groove (11), and two needle bearings two (65) without an inner ring are fixedly installed through the U-shaped frame (10), and the two needle bearings two (65) without an inner ring are rotatably sleeved on the two round boxes two (62) respectively; A retaining ring 1 (68) and a retaining ring 2 (69) are fixedly installed on the inner wall of the circular box 1 (61), and the two circular boxes 2 (62) and the two circular boxes 3 (63) are located between the retaining ring 1 (68) and the retaining ring 2 (69). A piston plate 1 (67) and a piston plate 2 (610) are slidably installed in the circular box 1 (61), and the retaining ring 1 (68) and the retaining ring 2 (69) are located between the piston plate 1 (67) and the piston plate 2 (610). A rack 2 (614) and a rack 1 (613) are fixedly installed on the side where the piston plate 2 (610) and the piston plate 1 (67) are close to each other, respectively. The rack 2 (614) and the rack 1 (613) are meshedly connected with the same gear (615), and a rotating shaft is fixedly installed on the gear (615) in a penetrating manner. (66), the two ends of the rotating shaft (66) are respectively rotatably connected to the two round boxes (62), the round box (62) is provided with a plurality of oil outlet holes (621) distributed in a circular array, the plurality of oil outlet holes (621) are all located on the inner side of the needle bearing (64) without an inner ring, the round box (63) is provided with a plurality of oil outlet holes (631) distributed in a circular array, the plurality of oil outlet holes (631) are all located on the inner side of the needle bearing (65) without an inner ring, the top of the piston plate (67) is fixed with a plurality of guide rods (612) penetrating the retaining ring (69) and sliding with the retaining ring (69), the bottom of the piston plate (610) is fixed with a plurality of guide rods (611) penetrating the retaining ring (68) and sliding with the retaining ring (68); The extrusion mechanism (8) comprises an inner concave disc (81) fixedly mounted on the U-shaped frame (10), and the extrusion mechanism (8) further comprises a one-way bearing (84), the one-way bearing (84) comprising an inner ring and an outer ring, the outer ring of the one-way bearing (84) passing through the bottom inner wall of the round box (61) and being fixedly connected to the round box (61), a round block (85) being fixedly mounted on the inner ring of the one-way bearing (84), a prism (86) being slidably mounted through the round block (85), a baffle (810) being fixedly mounted at the bottom end of the prism (86), and a baffle (810) being fixedly mounted at the bottom of the baffle (810) so as to be slidable with the inner concave disc (81). (81) contacting roller one (89), a partition one (88) is fixedly installed on the top of the prism one (86), a cylinder one (87) is fixedly installed on the top of the partition one (88), a cylinder one (83) is sleeved on the cylinder one (87), a one-way bearing one (82) is sleeved on the cylinder one (83), the one-way bearing one (82) is provided with an outer ring and an inner ring, the inner ring of the one-way bearing one (82) is fixedly sleeved on the cylinder one (83), the outer ring of the one-way bearing one (82) is fixedly connected to the bottom of the piston plate one (67), and the same spring two (811) is fixedly installed between the round block one (85) and the baffle one (810); The extrusion mechanism 2 (9) comprises an inner concave disc 2 (91) fixedly connected to the bracket (4), and the extrusion mechanism 2 (9) also comprises a one-way bearing 4 (94), the one-way bearing 4 (94) comprises an inner ring and an outer ring, the outer ring of the one-way bearing 4 (94) penetrates the top inner wall of the round box 1 (61) and is fixedly connected to the round box 1 (61), a round block 2 (95) is fixedly installed on the inner ring of the one-way bearing 4 (94), a prism 2 (96) is slidably installed through the round block 2 (95), a partition 2 (98) is fixedly installed on the bottom end of the prism 2 (96), a round column 2 (97) is fixedly installed on the bottom of the partition 2 (98), and the round block 2 (95) is fixedly installed on the bottom end of the round block 2 (95). A cylinder 2 (93) is sleeved on the column 2 (97), and a one-way bearing 3 (92) is sleeved on the cylinder 2 (93). The one-way bearing 3 (92) is provided with an outer ring and an inner ring. The inner ring of the one-way bearing 3 (92) is fixedly sleeved on the cylinder 2 (93), and the outer ring of the one-way bearing 3 (92) is fixedly connected to the top of the piston plate 2 (610). A baffle 2 (910) is fixedly installed on the top of the prism 2 (96), and a roller 2 (99) in contact with the concave disc 2 (91) is fixedly installed on the top of the baffle 2 (910). A spring 3 (911) is fixedly installed between the round block 2 (95) and the baffle 2 (910). The cylinder (87) is provided with a plurality of spiral guide grooves (871) distributed in a circumferential array, and the inner wall of the cylinder (83) is fixedly provided with a plurality of spiral guide ribs (831) adapted to the plurality of spiral guide grooves (871); The second cylinder (97) is provided with a plurality of second spiral guide grooves (971) distributed in a circumferential array, and the inner wall of the second cylinder (93) is fixedly mounted with a plurality of second spiral guide ribs (931) adapted to the plurality of second spiral guide grooves (971).

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