Anti-falling device of high-energy X-ray instrument

Abstract

The invention relates to the technical field of anti-falling, in particular to an anti-falling device of a high-energy X-ray instrument. A cantilever beam and a balancing weight are arranged on the front side and the rear side of a column pier respectively, the balancing weight is connected with the cantilever beam through a steel wire rope, a pulley system is arranged on the upper portion of the column pier, and the steel wire rope winds around the pulley system and is connected with the cantilever beam and the balancing weight. Two guide rails and a ball screw are arranged on the side face of the device, four sliding blocks are arranged at the end of the cantilever beam, and the sliding blocks are in sliding connection with the guide rails. The servo motor drives the ball screw to control the vertical movement of the cantilever beam and the balancing weight; the device is provided with two brakes which are respectively arranged between the two sliding blocks of each guide rail. And when the steel wire rope is broken or loosened, the brake can be automatically started to lock the cantilever beam, so that the cantilever beam is prevented from falling, and safe operation of equipment is guaranteed. The anti-falling device has the advantages of simple structure and high reliability, and is suitable for protecting the high-energy X-ray instrument.

Description

Technical Field

[0001] This invention patent relates to the technical field of fall prevention, and particularly to a fall prevention device for high-energy X-ray instruments. Background Art

[0002] In the original industrial CT, generally the radiation source and the detector do not move, and the test specimen rotates or moves vertically up and down. There is no need for the CT device to move vertically up and down and rotate horizontally. The characteristics of the CT device involved in the present invention are that the detector and the radiation source are horizontally rotated and vertically lifted through mechanical equipment, and the test specimen remains stationary. During the vertical lifting process of the radiation source and the detector in the CT, a fall prevention device is set up to prevent the cantilever beam from falling during its lifting process. Since the load borne by the cantilever beam is large, the traditional method of using a safety belt to prevent falling cannot bear the weight of the cantilever beam. A braking device with stronger load-bearing capacity and an effective method are needed to prevent the cantilever beam from falling. Summary of the Invention

[0003] The purpose of the present invention is to provide a fall prevention device for high-energy X-ray instruments, which can solve the above technical problems.

[0004] The present invention provides a fall prevention device for high-energy X-ray instruments, which mainly consists of a cantilever beam, a counterweight, a first steel wire rope, a second steel wire rope, a first linear guide rail, a second linear guide rail, a pier, a first pulley, a second pulley, a ball screw, a servo motor, a first brake, a second brake, a first slider, a second slider, a third slider, and a fourth slider.

[0005] Further, the front and back sides of the pier are respectively provided with a cantilever beam and a counterweight. The upper part of the pier is provided with a first pulley and a second pulley. The first steel wire rope and the second steel wire rope respectively bypass the first pulley and the second pulley to connect the counterweight and the cantilever beam. The side of the pier is provided with a first linear guide rail, a second linear guide rail, and a ball screw. The end of the cantilever beam is provided with a first slider, a second slider, a third slider, and a fourth slider. The first slider and the second slider are slidably connected to the first linear guide rail, and the third slider and the fourth slider are slidably connected to the second linear guide rail. The servo motor drives the ball screw to make the cantilever beam and the counterweight move in a straight line in the vertical direction. A first brake is arranged between the first slider and the second slider at the end of the cantilever beam, and a second brake is arranged between the third slider and the fourth slider. When the first steel wire rope or the second steel wire rope breaks or becomes slack above the cantilever beam, the first brake or the second brake will clamp the cantilever beam on the first linear guide rail or the second linear guide rail to prevent the cantilever beam from falling.

[0006] Further, the first brake and the second brake are connected to the end of the cantilever beam. The first brake and the second brake have the same structure. When describing the structure of the first brake and the second brake, only the first brake is described.

[0007] Further, the first brake and the second brake are connected to the end of the cantilever beam, and the first brake and the second brake have the same structure. The first brake mainly includes a first brake block, a second brake block, a pin shaft, a first brake rope, a second brake rope, a first magnet, a second magnet, a third magnet, a fourth magnet, a first connecting member, a second connecting member, and a bolt.

[0008] Further, the first brake and the second brake move along a first linear guide rail and a second linear guide rail respectively. The first brake includes a first brake block and a second brake block. The first brake block and the second brake block are rotatably connected through a pin shaft in the middle. The first connecting member and the second connecting member fix the first brake block and the second brake block to the end of the cantilever beam through bolts. On the opposite sides of the first brake block and the second brake block close to the first linear guide rail, a first magnet and a second magnet are respectively arranged, which are an S pole and an N pole. On the opposite sides of the first brake block and the second brake block close to the first steel wire rope, a third magnet and a fourth magnet are arranged, and both ends are S poles or both ends are N poles. The inner sides of the third magnet and the fourth magnet are respectively connected to the first steel wire rope at an inclined angle through a first brake rope and a second brake rope.

[0009] Further, the first brake and the second brake have the same structure, and the first brake rope and the second brake rope of the second brake are connected to the second steel wire rope at an angle.

[0010] Further, when the first steel wire rope suddenly breaks or becomes slack at the upper part of the cantilever beam, the first magnet and the second magnet clamp the first brake block and the second brake block on the first linear guide rail, and brake the cantilever beam in the operating position to prevent the cantilever beam from falling.

[0011] Further, when the second steel wire rope suddenly breaks or becomes slack at the upper part of the cantilever beam, the first magnet and the second magnet clamp the first brake block and the second brake block on the second linear guide rail, and brake the cantilever beam in the operating position to prevent the cantilever beam from falling.

[0012] Further, when the cantilever beam is not working, the cantilever beam descends to the bottom of the pier.

[0013] Further, when the cantilever beam is working normally, the forces of the first steel wire rope and the second steel wire rope are both F1, the first brake block is separated from the first linear guide rail, and the second brake block is separated from the second linear guide rail.

[0014] Further, when the cantilever beam is working, if the first steel wire rope breaks or becomes slack at the upper part of the cantilever beam, and the force of the first steel wire rope is less than F1, the first brake block and the second brake block clamp the first linear guide rail to prevent the cantilever beam from falling.

[0015] Further, when the cantilever beam is working, if the second steel wire rope breaks or becomes slack at the upper part of the cantilever beam, and the force of the second steel wire rope is less than F1, the first brake block and the second brake block clamp the first linear guide to prevent the cantilever beam from falling.

[0016] Further, when the cantilever beam is moving vertically during normal operation, when the force of the first steel wire rope is F1, the first brake block and the second brake block overcome the suction force F2 of the first magnet block and the second magnet block and the repulsive force F4 of the third magnet block and the fourth magnet block by means of the force F3 of the first brake rope and the second brake rope, and separate from the first linear guide.

[0017] Further, when the cantilever beam is working, if the first steel wire rope breaks or becomes slack at the upper part of the cantilever beam, and the force of the first steel wire rope is less than F1, the force F3 of the first brake rope and the second brake rope decreases, and the suction force F2 of the first magnet block and the second magnet block and the repulsive force F4 of the third magnet block and the fourth magnet block overcome the force F3 of the first brake rope and the second brake rope. The third magnet block and the fourth magnet block push the first brake block and the second brake block away, and the first magnet block and the second magnet block pull the first brake block and the second brake block tightly. The first brake block and the second brake block clamp the first linear guide to prevent the cantilever beam from falling.

[0018] Further, when the cantilever beam is moving vertically during normal operation, when the force of the second steel wire rope is F1, the first brake block and the second brake block overcome the suction force F2 of the first magnet block and the second magnet block and the repulsive force F4 of the third magnet block and the fourth magnet block by means of the force F3 of the first brake rope and the second brake rope, and separate from the second linear guide.

[0019] Further, when the cantilever beam is working, if the second steel wire rope breaks or becomes slack at the upper part of the cantilever beam, and the force of the second steel wire rope is less than F1, the force F3 of the first brake rope and the second brake rope decreases, and the suction force F2 of the first magnet block and the second magnet block and the repulsive force F4 of the third magnet block and the fourth magnet block overcome the force F3 of the first brake rope and the second brake rope. The third magnet block and the fourth magnet block push the first brake block and the second brake block away, and the first magnet block and the second magnet block pull the first brake block and the second brake block tightly. The first brake block and the second brake block clamp the second linear guide to prevent the cantilever beam from falling.

[0020] Beneficial effects:

[0021] By providing a brake at the end of the cantilever beam, the present invention provides a fall prevention device for the cantilever beam when the steel wire rope on the cantilever beam breaks or becomes slack, so as to prevent the cantilever beam from falling and protect the high-energy X-ray CT instrument. This device is connected to the brake at the end of the cantilever beam through a steel wire rope, and uses a mechanical device to prevent the cantilever beam from falling. Compared with a braking system that starts by emitting signals from sensors, the method of preventing falling by the mechanical device is safer, providing a fall prevention guarantee for the safe operation of the high-energy X-ray CT equipment. Description of the drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the anti-falling device for a high-energy X-ray instrument;

[0024] Figure 2 It is a schematic diagram of the position of the brake of the anti-falling device for a high-energy X-ray instrument;

[0025] Figure 3 It is a sectional view of the position of the brake of the anti-falling device for a high-energy X-ray instrument;

[0026] Figure 4 It is a detailed Figure 1 and force analysis diagram of the brake;

[0027] Figure 5 It is a detailed Figure 2 ;

[0028] Figure 6 It is a detailed Figure 3 of the brake.

[0029] Explanation of reference numerals: 1 - cantilever beam, 2 - counterweight, 301 - first steel wire rope, 302 - second steel wire rope, 401 - first linear guide rail, 402 - second linear guide rail, 5 - pier; 601 - first pulley, 602 - second pulley, 7 - ball screw, 8 - servo motor, 901 - first slider, 902 - second slider, 903 - third slider, 904 - fourth slider, 1001 - first brake, 1002 - second brake, 1101 - first brake block, 1102 - second brake block, 13 - pin shaft, 1401 - first brake rope, 1402 - second brake rope, 1501 - first magnet, 1502 - second magnet, 1503 - third magnet, 1504 - fourth magnet, 1601 - first connecting piece, 1602 - second connecting piece, 17 - bolt. Specific embodiments

[0030] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined. In addition, the terms "mounted", "connected", and "connected to" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] First, through Figure 1 , Figure 2 , Figure 3 the schematic diagram of the anti-falling device for a high-energy X-ray instrument based on the present invention is further described. The anti-falling device for a high-energy X-ray instrument mainly consists of a cantilever beam 1, a counterweight 2, a first steel wire rope 301, a second steel wire rope 302, a first linear guide rail 401, a second linear guide rail 402, a pier 5, a first pulley 601, a second pulley 602, a ball screw 7, a servo motor 8, a first slider 901, a second slider 902, a third slider 903, and a fourth slider 904, a first brake 1001, and a second brake 1002.

[0035] Through Figure 1 , Figure 2 , Figure 3It can be known that on the front and rear sides of the pier 5 are respectively the cantilever beam 1 and the counterweight 2. A first pulley 601 and a second pulley 602 are arranged on the upper part of the pier 5. The first steel wire rope 301 and the second steel wire rope 302 respectively bypass the first pulley 601 and the second pulley 602 to connect the counterweight 2 and the cantilever beam 1. A first linear guide rail 401, a second linear guide rail 402 and a ball screw 7 are arranged at the end of the cantilever beam 1, so that the cantilever beam 1 makes a vertical movement on the first linear guide rail 401, the second linear guide rail 402 and the ball screw 7, and the counterweight 2 makes a vertical movement in the vertical direction. The servo motor 8 drives the ball screw 7 to make the cantilever beam 1 and the counterweight 2 make a vertical movement. A first brake 1001 is arranged between the first slider 901 and the second slider 902 at the end of the cantilever beam 1, and a second brake 1002 is arranged between the third slider 903 and the fourth slider 904. When the first steel wire rope 301 or the second steel wire rope 302 breaks or becomes slack at the upper part of the cantilever beam, the first brake 1001 or the second brake 1002 clamps the cantilever beam 1 on the first linear guide rail 401 or the second linear guide rail 402 to prevent the cantilever beam 1 from falling.

[0036] It can be known from Figure 2 that the first brake 1001 and the second brake 1002 are connected to the end of the cantilever beam 1, and the structures of the first brake 1001 and the second brake 1002 are the same. When describing the structure of the first brake 1001 and the second brake 1002, only the first brake 1001 is described.

[0037] It can be known from Figures 4 - 6 that the first brake 1001 mainly includes a first brake block 1101, a second brake block 1102, a pin shaft 13, a first brake rope 1401, a second brake rope 1402, a first magnet 1501, a second magnet 1502, a third magnet 1503, a fourth magnet 1504, a first connecting piece 1601, a second connecting piece 1602 and a bolt 17.

[0038] The first brake block 1101 and the second brake block 1102 are connected by the pin shaft 13. The first connecting piece 1601 and the second connecting piece 1602 are fixed to the end of the cantilever beam 1 by the bolt 17. First magnets 1501 and second magnets 1502 are arranged on the inner sides of the first brake block 1101 and the second brake block 1102, with the two ends being the S pole and the N pole respectively. Third magnets 1503 and fourth magnets 1504 are arranged on the outer sides of the first brake block 1101 and the second brake block 1102, with both ends being the S pole or both ends being the N pole. The first brake rope 1401 and the second brake rope 1402 are connected to the first steel wire rope 301 at an angle.

[0039] The structures of the first brake 1001 and the second brake are the same. The first brake rope 1401 and the second brake rope 1402 of the second brake 1002 are connected to the second steel wire rope 302 at an angle.

[0040] When the first steel wire rope 301 suddenly breaks or becomes slack at the upper part of the cantilever beam, the first magnetic block 1501 and the second magnetic block 1502 clamp the first brake block 1101 and the second brake block 1102 on the first linear guide 401, braking the cantilever beam 1 at the operating position to prevent the cantilever beam 1 from falling.

[0041] When the second steel wire rope 302 suddenly breaks or becomes slack at the upper part of the cantilever beam, the first magnetic block 1501 and the second magnetic block 1502 clamp the first brake block 1101 and the second brake block 1102 on the second linear guide 402, braking the cantilever beam 1 at the operating position to prevent the cantilever beam 1 from falling.

[0042] When the cantilever beam 1 is not working, the cantilever beam 1 descends to the bottom of the pier 5.

[0043] From Figure 4 the shown force application method, when the cantilever beam 1 is working normally, the forces of the first steel wire rope 301 and the second steel wire rope 302 are both F1, the first brake block 1101 is separated from the first linear guide 401, and the second brake block 1102 is separated from the second linear guide 402;

[0044] When the cantilever beam 1 is working, if the first steel wire rope 301 breaks or becomes slack at the upper part of the cantilever beam, the force of the first steel wire rope 301 is less than F1, and the first brake block 1101 and the second brake block 1102 clamp with the first linear guide 401 to prevent the cantilever beam 1 from falling;

[0045] When the cantilever beam 1 is working, if the second steel wire rope 302 breaks or becomes slack at the upper part of the cantilever beam, the force of the second steel wire rope 302 is less than F1, and the first brake block 1101 and the second brake block 1102 clamp with the first linear guide 402 to prevent the cantilever beam 1 from falling;

[0046] When the cantilever beam 1 is moving vertically during normal operation, when the force of the first steel wire rope 301 is F1, the first brake block 1101 and the second brake block 1102 overcome the suction force F2 of the first magnetic block 1501 and the second magnetic block 1502 and the repulsive force F4 of the third magnetic block 1503 and the fourth magnetic block 1504 with the force F3 of the first brake rope 1401 and the second brake rope 1402 and are separated from the first linear guide 401.

[0047] When the cantilever beam 1 is working, if the first steel wire rope 301 breaks or becomes slack at the upper part of the cantilever beam 1 and the force of the first steel wire rope 301 is less than F1, the force F3 of the first braking rope 1401 and the second braking rope 1402 decreases. The suction force F2 of the first magnetic block 1501 and the second magnetic block 1502 and the repulsive force F4 of the third magnetic block 1503 and the fourth magnetic block 1504 overcome the force F3 of the first braking rope 1401 and the second braking rope 1402. The third magnetic block 1503 and the fourth magnetic block 1504 push the first brake block 1101 and the second brake block 1102 away, and the first magnetic block 1501 and the second magnetic block 1502 pull the first brake block 1101 and the second brake block 1102 tightly. The first brake block 1101 and the second brake block 1102 clamp the first linear guide 401 to prevent the cantilever beam 1 from falling;

[0048] When the cantilever beam 1 is working vertically normally and the force of the second steel wire rope 302 is F1, the first brake block 1101 and the second brake block 1102 overcome the suction force F2 of the first magnetic block 1501 and the second magnetic block 1502 and the repulsive force F4 of the third magnetic block 1503 and the fourth magnetic block 1504 by means of the force F3 of the first braking rope 1401 and the second braking rope 1402 and separate from the second linear guide 402.

[0049] Furthermore, when the cantilever beam 1 is working, if the second steel wire rope 302 breaks or becomes slack at the upper part of the cantilever beam 1 and the force of the second steel wire rope 302 is less than F1, the force F3 of the first braking rope 1401 and the second braking rope 1402 decreases. The suction force F2 of the first magnetic block 1501 and the second magnetic block 1502 and the repulsive force F4 of the third magnetic block 1503 and the fourth magnetic block 1504 overcome the force F3 of the first braking rope 1401 and the second braking rope 1402. The third magnetic block 1503 and the fourth magnetic block 1504 push the first brake block 1101 and the second brake block 1102 away, and the first magnetic block 1501 and the second magnetic block 1502 pull the first brake block 1101 and the second brake block 1102 tightly. The first brake block 1101 and the second brake block 1102 clamp the second linear guide 402 to prevent the cantilever beam 1 from falling.

[0050] A falling prevention device is provided on the cantilever beam 1, and the falling prevention of the cantilever beam is realized by providing the first brake 1001 or the second brake 1002 at the end of the cantilever beam 1.

[0051] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fall prevention device for a high-energy X-ray instrument, characterized in that: The jackup wheel comprises a first pulley and a second pulley on the top of the jackup wheel, a first steel wire rope and a second steel wire rope respectively pass around the first pulley and the second pulley to connect the counterweight block and the cantilever beam, a first linear guide, a second linear guide and a ball screw are arranged on the side of the jackup wheel, a first slider, a second slider, a third slider and a fourth slider are arranged on the end of the cantilever beam, the first slider and the second slider are slidably connected with the first linear guide, the third slider and the fourth slider are slidably connected with the second linear guide, a servo motor drives the ball screw to make the cantilever beam and the counterweight block perform linear motion in a vertical direction, a first brake is arranged between the first slider and the second slider at the end of the cantilever beam, and a second brake is arranged between the third slider and the fourth slider, when the first steel wire rope or the second steel wire rope breaks or relaxes at the top of the cantilever beam, the first brake or the second brake clamps the cantilever beam on the first linear guide or the second linear guide to prevent the cantilever beam from falling.

2. The anti-falling device for high-energy X-ray equipment according to claim 1, characterized in that: The first brake and the second brake move along the first linear guide and the second linear guide respectively. The first brake includes a first brake block and a second brake block, which are rotatably connected by a pin shaft in the middle. The first connecting member and the second connecting member fix the first brake block and the second brake block to the end of the cantilever beam through bolts. The first brake block and the second brake block are respectively provided with a first magnetic block and a second magnetic block on opposite sides close to the first linear guide, which are S poles and N poles respectively. The first brake block and the second brake block are provided with a third magnetic block and a fourth magnetic block on opposite sides close to the first steel wire rope, both ends are S poles or both ends are N poles. The inner sides of the third magnetic block and the fourth magnetic block are respectively connected to the first steel wire rope at an inclined angle through the first brake rope and the second brake rope. The second brake has the same structure as the first brake. When the first steel wire rope or the second steel wire rope is suddenly broken or loosened at the upper part of the cantilever beam, the first magnetic block and the second magnetic block clamp the first brake block and the second brake block on the first linear rail or the second linear rail, and brake the cantilever beam in the running position to prevent the cantilever beam from falling.

3. The anti-falling device for high-energy X-ray equipment according to claim 2, characterized in that: When the cantilever beam works normally and moves vertically, the force of the first steel wire rope or the second steel wire rope is F1, and the first brake block and the second brake block overcome the suction force F2 of the first magnetic block and the second magnetic block and the repulsion force F4 of the third magnetic block and the fourth magnetic block with the help of the force F3 of the first brake rope and the second brake rope, and separate from the first linear track or the second linear track.

4. The anti-falling device for high-energy X-ray equipment according to claim 2, characterized in that: When the cantilever beam makes vertical movement, the first steel wire rope or the second steel wire rope suddenly breaks or relaxes at the upper part of the cantilever beam. When the force of the first steel wire rope or the second steel wire rope is less than F1, the force F3 of the first brake rope and the second brake rope decreases, and the suction force F2 of the first magnetic block and the second magnetic block and the repulsion force F4 of the third magnetic block and the fourth magnetic block overcome the force F3 of the first brake rope or the second brake rope. At the same time, the third magnetic block and the fourth magnetic block bounce the first brake block and the second brake block away, and the first magnetic block and the second magnetic block tighten the first brake block and the second brake block. The first brake block and the second brake block clamp the first linear rail or the second linear rail to prevent the cantilever beam from falling.

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