Transmission mechanism for accurately positioning disc type inductor of 150KW transmitter

Abstract

The utility model provides a transmission mechanism for accurate in-place of a 150KW transmitter disc type inductor, which comprises a motor fixing box, a motor, a first gear, a second gear, a transmission belt and a swing arm, the motor is arranged in the motor fixing box, the motor fixing box is arranged on a fixing support, the first gear is arranged above the motor fixing box, and the second gear is arranged above the transmission belt. A motor shaft of the motor is in transmission connection with the first gear, the second gear is installed on one side of the first gear and located above the motor fixing box, the first gear and the second gear are connected through a transmission belt, one end of the swing arm is connected with the second gear through a connecting piece, and the other end of the swing arm is connected with the disc type coil. The device is simple in structure and convenient to operate, achieves the purpose of accurate positioning of eight-path transmission, greatly improves the operation efficiency, saves energy, reduces the failure rate, is easier and more convenient to maintain, and solves the problem that the number of eight-path tuning mechanical frames is large, especially the problem that a tuning point cannot be found at high frequency.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission mechanism technical field especially relates to a 150KW transmitter disc type inductance precision in place's transmission mechanism. BACKGROUND

[0002] The disc type inductance in 150KW transmitter is usually called 8 paths, and is a high pre-stage coarse adjustment inductance. Tuning is driven by a transmission device of a stepping motor, and the transmission device outputs mechanical rotation torque to drive the contact point on the disc type inductance to rotate, so as to change the electrical parameter of the disc type inductance. The photoelectric code disc of the rotation device is mechanically connected with the disc type inductance, and positioning is realized through counting of the photoelectric code disc. The counting value is completely corresponding to the electrical parameter value of the tuned element. During tuning, the required position is given by the "preset position" latch, and the "actual position" counter automatically tracks the position of the latch to tune. During automatic tuning, due to the large frame amount of the mechanical structure of the transmission structure, the error caused by the mechanical frame amount during long-term operation can cause inaccurate electrical positioning. This leads to the fact that the 150KW transmitter cannot reach the preset position during coarse adjustment, resulting in inaccurate coarse adjustment position. After the transmitter enters fine adjustment, the tuning point cannot be found, and automatic frequency reversal cannot be completed, which affects safe broadcasting and threatens the safety of the transmitter equipment. Especially at high frequencies, the mechanical error can reach 1.5 cm. At this time, the 1 path capacitor cannot accurately find the tuning point, and manual tuning of 8 paths is required to complete coarse adjustment, which affects the frequency reversal time and further affects safe broadcasting.

[0003] At present, the specific mechanical operation mode of the 8 path transmission mechanism is as follows: a stepping servo motor drives a gear to rotate, the gear drives a polytetrafluoroethylene transmission rod to rotate, the polytetrafluoroethylene transmission rod is connected with a universal shaft through a cross slider coupling, rotation of the universal shaft drives the swing arm to rotate, so that the swing arm node rotates on the disc type coil to obtain the inductance. The reason for inaccurate mechanical positioning is analyzed as follows: the servo motor is heavy and is fixed on the rack by screws. With rotation of the motor, the transmission rod driven by the gear will shake. The cross slider coupling and the universal shaft will be worn and adhered after long-term use, which will generate mechanical frame amount between the swing arm and the connecting rod, thereby affecting the torque, so that the contact point of the swing arm cannot accurately reach the preset position, a large error is generated, and the normal tuning of the transmitter is affected. Therefore, it is necessary to design a 150KW transmitter disc type inductance precision in place transmission mechanism. SUMMARY

[0004] The utility model provides a kind of 150KW transmitter disc type inductance precision in place's transmission mechanism, to solve the transmission mechanism structure complex, low efficiency, big error in prior art, realize the purpose of 8-way transmission precision positioning, greatly improve the efficiency of operation, save energy, reduce failure rate, maintenance is more relaxed and convenient, solve the problem of 8-way tuning mechanical frame quantity, especially at high frequency, cannot find the problem of tuning point.

[0005] The utility model discloses a kind of 150KW transmitter disc type inductance precision in place's transmission mechanism, including motor fixed box, motor, first gear, second gear, transmission belt and swing arm;

[0006] The motor is installed in the motor fixed box, the motor fixed box is installed in fixed support, the first gear is installed above the motor fixed box, and the motor shaft of the motor is in transmission connection with the first gear;

[0007] The second gear is installed at the side of the first gear and above the motor fixed box;

[0008] The first gear is connected between the second gear by transmission belt;

[0009] One end of the swing arm is connected with the second gear by connecting piece, and the other end of the swing arm is connected with disc coil.

[0010] Preferably, the connecting piece includes a connecting disc, a fixed block and a bearing, the connecting disc has a bearing groove in the center, the bearing is installed in the bearing groove, the fixed block is installed outside the bearing groove, and the fixed block is connected with the connecting disc by locking screw, the outer end of the bearing is connected with the swing arm connecting shaft through the fixed block, and the bearing is made of zirconia ceramic bearing.

[0011] Preferably, a plurality of key grooves and set screws are formed on the outer wall of the connecting disc, a key pin is installed in the key groove, and a set screw is inserted into the set screw hole.

[0012] Preferably, the motor is a Delta ASDA-A3 servo drive motor.

[0013] Preferably, the transmission belt is a parallel tensioning type synchronous belt.

[0014] Advantages:

[0015] (1) The utility model has novel structure design, convenient operation, realizes the purpose of 8-way transmission precision positioning, greatly improves the efficiency of operation, saves energy, reduces failure rate, maintenance is more relaxed and convenient, solves the problem of 8-way tuning mechanical frame quantity, especially at high frequency, cannot find the problem of tuning point.

[0016] (2) The utility model discloses a motor is installed in the motor fixed box, and the vibration of motor is eliminated, and the wobble of gear is not caused when rotating, and the stability of transmission mechanism is increased.

[0017] (3) The connecting piece of the utility model is not produced mechanical frame amount when driving swing arm rotation, and the gap between connecting shaft and shaft can be reduced by the combination of key pin and jackscrew, thereby reducing the impact caused by inertia, protecting both from damage, in addition, the jacking force of jackscrew can assist transmission torque, prolong the service life of key, improve work efficiency and safety factor, improve work efficiency and safety factor, solve the problem caused by uneven force of chain, reduce chain jumping and chain breaking caused by chain loosening.

[0018] The above description is only a summary of the technical scheme of the utility model embodiment, in order to more clearly understand the technical means of the utility model embodiment, which can be implemented according to the content of the specification, and in order to let the above and other purposes, characteristics and advantages of the utility model embodiment can be more obvious and easy to understand, the specific implementation of the utility model will be described below. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the utility model embodiment, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a side view of the motor fixed box installation of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the connecting piece of the utility model;

[0023] Figure 4 It is a top view of the connecting disc of the utility model;

[0024] Mark explanation: motor fixed box 1, motor 2, first gear 3, second gear 4, transmission belt 5, swing arm 6, connecting piece 7, disc type coil 8, connecting disc 9, fixed block 10, bearing 11, bearing groove 12, swing arm connecting shaft 13, keyway 14, jackscrew hole 15. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the use herein of terms such as "comprise", "comprising", "comprises", "including", "includes" or "have" or "has" are used generically meaning "including but not limited to".

[0027] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. Those skilled in the art will appreciate that embodiments described herein can be combined with other embodiments.

[0028] The orientation words appearing in the following description are the directions shown in the drawings, and are not limited to the specific structure of the present application. For example, in the description of the present application, the orientation or position 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", "axial", "radial", "circumferential" and the like are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In addition, the expressions of the indicating directions such as X direction, Y direction and Z direction used to describe the operation and structure of each component of the embodiments are not absolute but relative, and although these indications are appropriate when each component is in the position shown in the drawings, these directions should be interpreted differently when these positions change to correspond to the changes.

[0030] In addition, the terms "first", "second" and the like in the description and claims of the present application or above-mentioned accompanying drawings are used to distinguish different objects, and are not used to describe a specific order, and can explicitly or implicitly include one or more of the features.

[0031] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, the "connection" or "connection" of mechanical structure can mean physical connection, for example, the physical connection can be fixed connection, for example, fixed connection by fixing member, for example, fixed connection by screw, bolt or other fixing member; the physical connection can also be detachable connection, for example, mutual clamping or clamping connection; the physical connection can also be integrally connected, for example, welding, bonding or integrally formed connection for connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In order to enable the person skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings.

[0033] Please refer to Figures 1-4 The utility model discloses a 150KW transmitter disc type inductance precision in place's drive mechanism, including motor fixed box 1, motor 2, first gear 3, second gear 4, drive belt 5 and swing arm 6.

[0034] The motor 2 is installed in the motor fixed box 1, and the motor 2 adopts the ASDA-A3 servo drive motor of Delta, the motor fixed box 1 is installed on the fixed support, the first gear 3 is installed above the motor fixed box 1, and the motor shaft of the motor 2 is in transmission connection with the first gear 3.

[0035] The second gear 4 is installed on one side of the first gear 3 and above the motor fixed box 1.

[0036] The first gear 3 and the second gear 4 are connected by the drive belt 5, and the drive belt 5 adopts parallel tension type synchronous belt; the parallel tension type synchronous belt transmission is accurate, has no sliding during work, has constant transmission ratio; transmission is stable, has buffering, damping capacity, low noise; transmission efficiency is high; maintenance is convenient, does not need lubrication, and maintenance cost is low; speed range is large, has larger power range, can reach several watts to several hundred kilowatts.

[0037] One end of the swing arm 6 is connected with the second gear 4 through the connecting piece 7, and the other end of the swing arm 6 is connected with the disc type coil 8.

[0038] The utility model discloses, connecting piece 7 includes connecting disc 9, fixed block 10 and bearing 11, bearing groove 12 is set up in the center of connecting disc 9, bearing 11 is installed in bearing groove 12, fixed block 10 is installed in the outside of bearing groove 12, just fixed block 10 is connected with connecting disc 9 through locking screw, the outer end portion of bearing 11 is connected with swing arm connecting shaft 13 through fixed block 10, bearing 11 adopts zirconia ceramic bearing, connecting disc 9 outer wall sets up a plurality of keyway 14 and jackscrew hole 15, key pin is installed in keyway 14, and jackscrew hole 15 inserts jack screw.

[0039] Working principle: control motor works, and the motor shaft of motor drives the rotation of first gear, and first gear drives the rotation of second gear through transmission belt, and second gear drives the rotation of swing arm through connecting piece, and swing arm drives the rotation of the contact on disc inductor, and changes disc inductor electrical parameter.

[0040] In conclusion, the utility model discloses novel structure design, convenient operation realizes the purpose of 8 -way transmission accurate positioning, improves the efficiency of operation greatly, saves energy, reduces the failure rate, and maintenance is more relaxed and convenient, solves the problem of 8 -way tuning mechanical frame quantity, especially when high frequency, cannot find the problem of tuning point.

[0041] The above-described embodiments are merely used to illustrate the technical solutions of the utility model, rather than limiting them; although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand: the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A transmission mechanism for precise positioning of a disc-shaped inductor in a 150KW transmitter, characterized in that, It includes a motor mounting box (1), a motor (2), a first gear (3), a second gear (4), a transmission belt (5), and a swing arm (6); The motor (2) is installed in the motor mounting box (1), the motor mounting box (1) is installed on the fixed bracket, the first gear (3) is installed above the motor mounting box (1), and the motor shaft of the motor (2) is connected to the first gear (3) in a transmission connection. The second gear (4) is installed on one side of the first gear (3) and is located above the motor mounting box (1); The first gear (3) and the second gear (4) are connected by a transmission belt (5); One end of the swing arm (6) is connected to the second gear (4) via a connector (7), and the other end of the swing arm (6) is connected to the disc coil (8).

2. The transmission mechanism for precise positioning of a disc-shaped inductor in a 150KW transmitter according to claim 1, characterized in that, The connector (7) includes a connecting plate (9), a fixing block (10), and a bearing (11). The connecting plate (9) has a bearing groove (12) in the center. The bearing (11) is installed in the bearing groove (12). The fixing block (10) is installed outside the bearing groove (12) and is connected to the connecting plate (9) by a locking screw. The outer end of the bearing (11) passes through the fixing block (10) and is connected to the swing arm connecting shaft (13). The bearing (11) is a zirconia ceramic bearing.

3. The transmission mechanism for precise positioning of a disc-shaped inductor in a 150KW transmitter according to claim 2, characterized in that, The outer wall of the connecting plate (9) has multiple keyways (14) and set screw holes (15). Key pins are installed in the keyways (14) and set screws are inserted into the set screw holes (15).

4. The transmission mechanism for precise positioning of a disc-shaped inductor in a 150KW transmitter according to claim 1, characterized in that, The motor (2) is a Delta ASDA-A3 servo drive motor.

5. The transmission mechanism for precise positioning of a disc-shaped inductor in a 150KW transmitter according to claim 1, characterized in that, The transmission belt (5) is a parallel tensioned synchronous belt.

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