Belt fracture auxiliary detection tool

Abstract

The utility model is suitable for the technical field of belt detection, and provides a belt fracture auxiliary detection tool which comprises a fixing frame and supporting legs fixedly installed at the four corners of the bottom of the fixing frame. Through the mutual cooperation of the connecting seat, the lifting plate, the threaded rod, the worm gear, the worm, the knob, the fixed rod, the movable plate, the buffer rod, the buffer spring and the detection roller, the position of the detection roller can be adjusted, so that the detection roller is attached to the inner wall of the conveying belt, meanwhile, the buffer spring is arranged to enable the detection roller to be tightly attached to the inner wall of the conveying belt, and the detection efficiency is improved. Through mutual cooperation of a protection frame, a circular base, a movable gear, a rotary disc, a pawl, a telescopic spring, a rack plate, a cam, a pushing plate, a moving rod, a reset spring, a knocking plate and a clock, the knocking plate can be driven to knock the clock to make a sound when the conveying belt is broken, and the effect of reminding workers to handle the situation in time is achieved; and greater damage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt detection, and particularly relates to an auxiliary belt breakage detection tool. Background Technique

[0002] A belt conveyor moves the items to be conveyed onto the equipment when the carriage rotates. It is also translated as a belt conveyor. The belt is mainly made of rubber, but according to the materials to be conveyed, the belt can be made of resin, felt, etc. The belt is prone to damage after long-term use, so it is necessary to use a detection tool to detect it.

[0003] When the existing belt conveyor is in use, it usually relies on the staff to visually check whether it is broken, and the detection effect is poor. In addition, when the belt breaks, the staff cannot be notified in time, which is likely to cause blockage at the discharge port, production line backlog or shutdown, and is not conducive to the staff to repair it in time and reduce losses.

[0004] Therefore, we propose an auxiliary belt breakage detection tool to solve the problems mentioned above. Content of the Utility Model

[0005] The utility model provides an auxiliary belt breakage detection tool, aiming to solve the problems mentioned above.

[0006] The utility model is realized as follows: an auxiliary belt breakage detection tool includes a fixed frame and support legs fixedly installed at the four corners of the bottom of the fixed frame. At the upper sides of both sides inside the fixed frame, rollers are respectively arranged, and a first movable rod and a second movable rod are respectively fixedly installed through the middle parts of the rollers. The front and rear ends of the first movable rod are respectively rotatably installed on the inner wall of the inner cavity of the fixed frame. The rear end of the second movable rod is movably installed on the inner wall of the inner cavity of the fixed frame, and the front end of the second movable rod movably penetrates and extends to the outside of the fixed frame. A driving motor is fixedly installed on one side of the front side of the fixed frame, and the output end of the driving motor is fixedly connected to the front end of the second movable rod. A conveyor belt is sleeved on the outside of the rollers, and an adjusting component is installed below the inner cavity of the fixed frame, and a warning component is installed in the inner cavity of the conveyor belt.

[0007] Preferably, the adjusting assembly includes a connecting seat arranged below the inner cavity of the fixed frame and a lifting plate arranged above the connecting seat. The front and rear sides of the connecting seat are respectively fixedly connected to the fixed frame. Threaded rods are respectively installed through the front and rear sides of the lifting plate near the two sides. The lower ends of the threaded rods are respectively movably installed on the connecting seat. A worm gear is fixedly sleeved at the output end of the front threaded rod. A worm is engaged with one side of the worm gear. The front end of the worm movably penetrates and extends to the outside of the fixed frame. A knob is fixedly installed at the front end of the worm. Fixed rods are respectively fixedly installed at the front and rear sides of the top of the lifting plate. The upper ends of the fixed rods are jointly fixedly installed with a movable plate. An n-shaped plate is arranged below the movable plate. A detection roller is movably installed at the lower part of the inner cavity of the n-shaped plate.

[0008] Preferably, a first single-groove pulley is fixedly sleeved on the output shaft of the rear threaded rod, a second single-groove pulley is fixedly sleeved on the output shaft of the front threaded rod, and a belt is jointly sleeved on the outside of the first single-groove pulley and the second single-groove pulley.

[0009] Preferably, limit telescopic rods are respectively fixedly installed at the front and rear sides of the bottom of the lifting plate, and the lower ends of the limit telescopic rods are respectively fixedly installed on the connecting seat.

[0010] Preferably, buffer rods are respectively slidably installed through the front and rear sides of the movable plate near the two sides, and the lower ends of the buffer rods are respectively fixedly installed on the n-shaped plate. Buffer springs are respectively sleeved on the output shafts of the buffer rods, and the two ends of the buffer springs are respectively fixedly installed on the movable plate and the n-shaped plate.

[0011] Preferably, the warning assembly includes a protective frame arranged in the inner cavity of the conveyor belt and a circular seat fixedly installed at one side of the rear side of the inner cavity of the protective frame. The bottom of the protective frame is fixedly installed on the movable plate. A movable gear is rotatably installed on the front side of the circular seat. A ratchet groove is formed in the middle of the movable gear. A turntable is arranged in the middle of the rear side of the movable gear. A rack plate is engaged with one side of the movable gear. The lower end of the rack plate slidably penetrates and extends to the outside of the movable plate. The lower end of the rack plate is fixedly installed on the n-shaped plate. A rotating rod is fixedly installed in the middle of the turntable. The rear end of the rotating rod is movably installed on the circular seat. A cam is fixedly sleeved at the output end of the rotating rod. A push plate is arranged below the cam. A knocking plate is arranged below one side of the bottom of the movable plate. A bell is arranged at the bottom of the knocking plate. An L-shaped plate is fixedly installed at the bottom of the bell. The top of the L-shaped plate is fixedly installed on the movable plate.

[0012] Preferably, a moving rod is fixedly installed at the bottom of the push plate, and the lower end of the moving rod slidably penetrates and extends to the outside of the movable plate. The lower end of the moving rod is fixedly installed on the knocking plate. A return spring is sleeved on the output shaft of the moving rod, and the upper and lower ends of the return spring are respectively fixedly installed on the push plate and the movable plate.

[0013] Preferably, a pawl is movably installed on one side of the front side of the turntable, and the pawl is attached to the inner wall of the inner cavity of the ratchet groove. A fixing plate is arranged on one side of the pawl, and the rear side of the fixing plate is fixedly installed on the turntable. A telescopic spring is movably installed between the turntable and the fixing plate.

[0014] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0015] Through the mutual cooperation among components such as the connecting seat, lifting plate, threaded rod, worm gear, worm, knob, fixing rod, movable plate, buffer rod, buffer spring and detection roller, the present utility model can adjust the position of the detection roller to make it fit the inner wall of the conveyor belt. At the same time, the setting of the buffer spring can make it closely fit the inner wall of the conveyor belt, playing a role in monitoring its breakage. And through the mutual cooperation among components such as the protective frame, circular seat, movable gear, turntable, pawl, telescopic spring, rack plate, cam, push plate, moving rod, return spring, knocking plate and bell, when the conveyor belt breaks, it can drive the knocking plate to knock the bell to make a sound, playing a role in reminding the staff to deal with it in time to avoid greater damage. Description of the Drawings

[0016] Figure 1 is the overall three-dimensional view of the present utility model;

[0017] Figure 2 is the partial sectional three-dimensional view of the present utility model;

[0018] Figure 3 is the partial sectional unfolded three-dimensional view of the present utility model;

[0019] Figure 4 is the front bottom three-dimensional view of the present utility model;

[0020] Figure 5 is the partial structural three-dimensional view of the connecting seat of the present utility model;

[0021] Figure 6 is the bottom three-dimensional view of the connecting seat of the present utility model;

[0022] Figure 7 is the partial structural three-dimensional view of the movable plate of the present utility model;

[0023] Figure 8 is of the present utility model Figure 7 enlarged view at A;

[0024] Figure 9 is the partial top-down three-dimensional view of the movable gear of the present utility model;

[0025] Figure 10 is the partial top-down sectional three-dimensional view of the circular seat of the present utility model.

[0026] In the figure: 1, fixed frame; 2, support leg; 3, roller; 4, conveyor belt; 5, drive motor; 6, adjustment component; 61, connection seat; 62, lifting plate; 621, limit telescopic rod; 63, threaded rod; 631, belt; 64, worm gear; 65, worm; 66, knob; 67, fixed rod; 68, movable plate; 681, buffer rod; 682, buffer spring; 69, detection roller; 7, warning component; 71, protective frame; 72, circular seat; 73, movable gear; 74, turntable; 741, pawl; 742, telescopic spring; 75, rack plate; 76, cam; 77, push plate; 771, moving rod; 772, return spring; 78, knocking plate; 79, bell. Specific embodiments

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0028] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] An embodiment of the present utility model provides an auxiliary detection tool for belt breakage, as Figures 1-10 shown, an auxiliary detection tool for belt breakage includes a fixed frame 1 and support legs 2 fixedly installed at the four corners of the bottom of the fixed frame 1. On both sides above the inner cavity of the fixed frame 1, rollers 3 are respectively arranged, and a first movable rod and a second movable rod are fixedly installed through the middle parts of the rollers 3. The front and rear ends of the first movable rod are respectively rotatably installed on the inner wall of the inner cavity of the fixed frame 1. The rear end of the second movable rod is movably installed on the inner wall of the inner cavity of the fixed frame 1, and the front end of the second movable rod movably penetrates and extends to the outside of the fixed frame 1. A drive motor 5 is fixedly installed on one side of the front side of the fixed frame 1, and the output end of the drive motor 5 is fixedly connected to the front end of the second movable rod. A conveyor belt 4 is sleeved on the outside of the rollers 3, and an adjustment component 6 is installed below the inner cavity of the fixed frame 1. A warning component 7 is installed in the inner cavity of the conveyor belt 4.

[0030] It should be noted that when the existing belt conveyor is in use, it usually relies on the staff to visually check whether it is broken, and the detection effect is poor. In addition, when the belt breaks, the staff cannot be notified in time, which is likely to cause blockage of the feeding port, product line backlog or shutdown, and is not conducive to the staff to repair and process it in time to reduce losses. Therefore, in order to solve the problems of the existing technology, this solution designs the mutual cooperation of the adjustment component 6 and the warning component 7 to solve the above-mentioned problems, and then the operation of the driving motor 5 can drive the conveyor belt 4 to operate.

[0031] In a further preferred embodiment of the present invention, the adjustment component 6 includes a connection seat 61 arranged below the inner cavity of the fixed frame 1 and a lifting plate 62 arranged above the connection seat 61. The front and rear sides of the connection seat 61 are respectively fixedly connected to the fixed frame 1. Threaded rods 63 are respectively installed through the front and rear sides of the lifting plate 62. The lower ends of the threaded rods 63 are respectively movably installed on the connection seat 61. The output ends of the front threaded rod 63 are fixedly sleeved with worm wheels 64. One side of the worm wheel 64 is engaged with a worm 65. The front end of the worm 65 movably penetrates and extends to the outside of the fixed frame 1. A knob 66 is fixedly installed at the front end of the worm 65. Fixed rods 67 are respectively fixedly installed at the front and rear sides of the top of the lifting plate 62. The upper ends of the fixed rods 67 are jointly fixedly installed with a movable plate 68. An n-shaped plate is arranged below the movable plate 68. A detection roller 69 is movably installed at the lower part of the inner cavity of the n-shaped plate.

[0032] In this embodiment, when in use, turning the knob 66 can drive the worm 65 to rotate. When the worm 65 rotates, it will drive the worm wheel 64 to rotate. When the worm wheel 64 rotates, it will drive the front threaded rod 63 to rotate. When the threaded rod 63 rotates, it will jointly drive the lifting plate 62 to move downward. When the lifting plate 62 moves downward, it will drive the movable plate 68 to move downward through the fixed rod 67. When the movable plate 68 moves downward, it will drive the detection roller 69 to move downward and fit with the inner wall of the inner cavity of the conveyor belt 4.

[0033] In a further preferred embodiment of the present invention, a first single-groove pulley is fixedly sleeved on the output shaft of the rear threaded rod 63, and a second single-groove pulley is fixedly sleeved on the output shaft of the front threaded rod 63. A belt 631 is sleeved on the outside of the first single-groove pulley and the second single-groove pulley.

[0034] In this embodiment, when the front threaded rod 63 rotates, it will drive the rear threaded rod 63 to rotate synchronously through the transmission of the belt 631.

[0035] In a further preferred embodiment of the present invention, limit telescopic rods 621 are respectively fixedly installed at the front and rear sides of the bottom of the lifting plate 62. The lower ends of the limit telescopic rods 621 are respectively fixedly installed on the connection seat 61.

[0036] In this embodiment, when the lifting plate 62 moves downward, it will move downward stably under the limiting action of the limiting telescopic rod 621.

[0037] In a further preferred embodiment of the present utility model, buffer rods 681 are respectively slidably penetrated and installed near the front and rear sides of the movable plate 68, and the lower ends of the buffer rods 681 are respectively fixedly installed on the n-shaped plate. Buffer springs 682 are respectively sleeved on the output shafts of the buffer rods 681, and both ends of the buffer springs 682 are respectively fixedly installed on the movable plate 68 and the n-shaped plate.

[0038] In this embodiment, when the movable plate 68 drives the detection roller 69 to move downward until it fits against the inner wall of the inner cavity of the conveyor belt 4, it will squeeze the buffer rod 681 to move upward. When the buffer rod 681 moves upward, it will squeeze the buffer spring 682, so that the detection roller 69 is always in close contact with the conveyor belt 4.

[0039] In a further preferred embodiment of the present utility model, the warning assembly 7 includes a protective frame 71 arranged in the inner cavity of the conveyor belt 4 and a circular seat 72 fixedly installed on one side of the rear side of the inner cavity of the protective frame 71. The bottom of the protective frame 71 is fixedly installed on the movable plate 68. A movable gear 73 is rotatably installed on the front side of the circular seat 72. A ratchet groove is formed in the middle of the movable gear 73, and a turntable 74 is arranged in the middle of the rear side of the movable gear 73. A rack plate 75 is engaged with one side of the movable gear 73, and the lower end of the rack plate 75 slidably penetrates and extends to the outside of the movable plate 68. The lower end of the rack plate 75 is fixedly installed on the n-shaped plate. A rotating rod is fixedly installed in the middle of the turntable 74, the rear end of the rotating rod is movably installed on the circular seat 72, and a cam 76 is fixedly sleeved at the output end of the rotating rod. A push plate 77 is arranged below the cam 76, a knocking plate 78 is arranged below one side of the bottom of the movable plate 68, and a bell 79 is arranged at the bottom of the knocking plate 78. The bottom of the bell 79 is fixedly installed on an L-shaped plate, and the top of the L-shaped plate is fixedly installed on the movable plate 68.

[0040] In this embodiment, when the detection roller 69 moves upward, it will also drive the rack plate 75 to move upward. When the rack plate 75 moves upward, it will drive the movable gear 73 to rotate. At this time, the movable gear 73 cannot drive the turntable 74 to rotate. When the conveyor belt 4 breaks, the buffer spring 682 will lose the extrusion force. At this time, it will drive the movable plate 68 to move downward and recover. When the movable plate 68 moves downward, it will drive the rack plate 75 to move downward. When the rack plate 75 moves downward, it will drive the turntable 74 to rotate. When the turntable 74 rotates, it will drive the cam 76 to rotate through the rotating rod. When the cam 76 rotates to contact the push plate 77, it will squeeze it to move downward. The push plate 77 moves downward to drive the knocking plate 78 to knock the bell 79 to make a sound, so as to remind the staff to deal with it in time.

[0041] In a further preferred embodiment of the present utility model, a moving rod 771 is fixedly installed at the bottom of the pushing plate 77, and the lower end of the moving rod 771 slidably penetrates and extends to the outside of the movable plate 68. The lower end of the moving rod 771 is fixedly installed on the knocking plate 78. A return spring 772 is sleeved on the output shaft of the moving rod 771, and the upper and lower ends of the return spring 772 are respectively fixedly installed on the pushing plate 77 and the movable plate 68.

[0042] In this embodiment, when the pushing plate 77 moves downward, it will drive the knocking plate 78 to move downward through the moving rod 771 to knock the bell 79, and the setting of the return spring 772 can restore it when the cam 76 is away from the pushing plate 77, so that the knocking plate 78 can continuously knock the bell 79 back and forth.

[0043] In a further preferred embodiment of the present utility model, a pawl 741 is movably installed on one side of the front side of the turntable 74, and the pawl 741 fits on the inner wall of the inner cavity of the ratchet groove. One side of the pawl 741 is provided with a fixing plate, and the rear side of the fixing plate is fixedly installed on the turntable 74. A telescopic spring 742 is movably installed between the turntable 74 and the fixing plate.

[0044] In this embodiment, when the rack plate 75 moves upward, it will drive the movable gear 73 to rotate in contact with the pawl 741, and when the rack plate 75 moves downward, it will engage with the pawl 741, and at this time the rotation will drive the rotation of the turntable 74.

[0045] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be in other sequences or performed simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0046] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units can be implemented in other ways in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0047] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or may be distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without making creative efforts, combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances, so as to obtain different technical solutions that essentially do not depart from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A belt breakage auxiliary detection tool, comprising a fixing frame (1) and supporting legs (2) fixedly mounted at the four corners of the bottom of the fixing frame (1), characterized in that: Rollers (3) are respectively arranged on both sides above the inner cavity of the fixed frame (1), and a first movable rod and a second movable rod are respectively fixedly installed through the middle of the roller (3), the front and rear ends of the first movable rod are respectively rotatably installed on the inner wall of the inner cavity of the fixed frame (1), the rear end of the second movable rod is movably installed on the inner wall of the inner cavity of the fixed frame (1), and the front end of the second movable rod is movably extended through the outer side of the fixed frame (1), a driving motor (5) is fixedly installed on one side of the front side of the fixed frame (1), and the output end of the driving motor (5) is fixedly connected to the front end of the second movable rod, the outer side of the roller (3) is jointly sleeved with a conveyor belt (4), and an adjustment component (6) is installed below the inner cavity of the fixed frame (1), and a warning component (7) is installed in the inner cavity of the conveyor belt (4).

2. The belt breakage auxiliary detection tool according to claim 1, characterized in that: The adjustment assembly (6) comprises a connection seat (61) arranged below the inner cavity of the fixing frame (1) and a lifting plate (62) arranged above the connection seat (61), and the front and rear sides of the connection seat (61) are respectively fixedly connected to the fixing frame (1), and threaded rods (63) are respectively threadedly installed near the front and rear sides of the lifting plate (62), and the lower ends of the threaded rods (63) are respectively movably installed on the connection seat (61), and the output end of the front threaded rod (63) is fixedly sleeved with a worm gear (64) ), a worm (65) is meshed with one side of the worm wheel (64), and the front end of the worm (65) is movably extended through the outside of the fixed frame (1), a knob (66) is fixedly installed at the front end of the worm (65), fixed rods (67) are respectively fixedly installed at the front and rear sides of the top of the lifting plate (62), and a movable plate (68) is fixedly installed at the upper end of the fixed rod (67), an n-shaped plate is arranged below the movable plate (68), and a detection roller (69) is movably installed below the inner cavity of the n-shaped plate.

3. The belt breakage auxiliary detection tool according to claim 2, characterized in that: A first single groove wheel is fixedly sleeved on the output shaft of the rear threaded rod (63), a second single groove wheel is fixedly sleeved on the output shaft of the front threaded rod (63), and a belt (631) is sleeved on the outer sides of the first single groove wheel and the second single groove wheel.

4. The belt breakage auxiliary detection tool according to claim 2, characterized in that: The front and rear sides of the bottom of the lifting plate (62) are respectively fixedly mounted with limiting telescopic rods (621), and the lower ends of the limiting telescopic rods (621) are respectively fixedly mounted on the connecting seat (61).

5. The belt breakage auxiliary detection tool according to claim 2, characterized in that: Buffer rods (681) are slidably installed on the movable plate (68) near the front and rear sides, and the lower ends of the buffer rods (681) are fixedly installed on the n-shaped plates. Buffer springs (682) are sleeved on the output shafts of the buffer rods (681), and the two ends of the buffer springs (682) are fixedly installed on the movable plate (68) and the n-shaped plate.

6. The belt breakage auxiliary detection tool according to claim 2, characterized in that: The warning assembly (7) comprises a protection frame (71) arranged in the inner cavity of the conveyor belt (4) and a circular seat (72) fixedly mounted on one side of the inner cavity of the protection frame (71), and the bottom of the protection frame (71) is fixedly mounted on the movable plate (68), a movable gear (73) is rotatably mounted on the front side of the circular seat (72), a ratchet groove is provided in the middle of the upper portion of the movable gear (73), and a rotating disk (74) is provided in the middle of the rear side of the movable gear (73), a rack plate (75) is meshed on one side of the movable gear (73), and the lower end of the rack plate (75) slides through and extends to the movable gear (73). The lower end of the rack plate (75) is fixedly mounted on the n-shaped plate at the outer side of the movable plate (68), a rotating rod is fixedly mounted on the middle part of the rotating disk (74), the rear end of the rotating rod is movably mounted on the circular seat (72), and the output end of the rotating rod is fixedly sleeved with a cam (76), a push plate (77) is arranged below the cam (76), a knocking plate (78) is arranged below one side of the bottom of the movable plate (68), and a bell (79) is arranged at the bottom of the knocking plate (78), and an L-shaped plate is fixedly mounted on the bottom of the bell (79), and the top of the L-shaped plate is fixedly mounted on the movable plate (68).

7. The belt breakage auxiliary detection tool according to claim 6, characterized in that: A moving rod (771) is fixedly mounted on the bottom of the push plate (77), and the lower end of the moving rod (771) slides through and extends to the outside of the movable plate (68), the lower end of the moving rod (771) is fixedly mounted on the knocking plate (78), a return spring (772) is sleeved on the output shaft of the moving rod (771), and the upper and lower ends of the return spring (772) are respectively fixedly mounted on the push plate (77) and the movable plate (68).

8. The belt breakage auxiliary detection tool according to claim 6, characterized in that: A pawl (741) is movably mounted on one side of the front side of the rotating disk (74), and the pawl (741) is attached to the inner wall of the ratchet groove cavity. A fixing plate is provided on one side of the pawl (741), and the rear side of the fixing plate is fixedly mounted on the rotating disk (74), and a telescopic spring (742) is movably mounted between the rotating disk (74) and the fixing plate.

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