JPH0582117U - Antenna lifting / turning device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide an antenna lifting / turning device with a simple mechanism and easy operation. [Structure] A tension adjusting mechanism 33 for adjusting the tension of a portion of the lifting belt which extends on both sides of the antenna turning portion 32 as a boundary.
Is provided, and the antenna unit 12 is configured to swivel in the direction along this tension. This antenna swivel unit 32
Is a pair of elastic members 27, a slide metal 30, and a rotating shaft 1
4 and a turning lever 19. Elastic member 27
Has one end connected to both ends of the swivel belt 20 and the other ends connected to each other. Further, the slide metal 30 is fixed to the connecting portion between the other ends of the pair of elastic members 27. The rotating shaft 14 is provided on the antenna unit 12. In addition, the swivel lever 19 connects the slide metal 30 and the rotary shaft 14 to each other, and the slide metal 30 is connected within a predetermined angle range.
Rotate around.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of an antenna elevating / lowering device that pivots a receiving antenna in an open-site or anechoic chamber by 90 degrees about a horizontal axis and raises / lowers it to a required height.

[0002]

[Prior Art]

 The structure and operation of a conventional antenna lifting / turning device (hereinafter referred to as device) will be described with reference to the drawings.

FIG. 5 is a schematic plan view of a base (not shown) of the apparatus. In FIG. 5, the electric motor 101 is connected to one shaft 100b of the two shafts 100a and 100b arranged in parallel via the speed reducer 102, the spur gear 103 is fixed to the one shaft 100b, and the spur gear 104 of the same diameter is connected. Is loosely fitted to the other shaft 100a and meshes with the spur gear 103, and the pulleys 105 and 106 having the same diameter are opposed to the spur gears 103 and 104 on the opposite side to the speed reducer 102 side. , 100b, respectively. Further, a torque limiter 107 is interposed between the fixed spur gear 103 and the pulley 105. A clutch (usually connecting the spur gear 104 and the shaft 100b) 108 and a brake 109 are provided on the opposite side of the shaft 100a in which the spur gear 104 is loosely fitted from the pulley 106. Therefore, when the electric motor 101 is operated, the pulleys 105 and 106 rotate at the same speed and in opposite directions.

6 and 7 are schematic side views of the apparatus of FIG. Referring also to these figures, two endless belts 110 and 111 are stretched between pulleys 105 and 106 and pulleys 105 ′ and 106 ′ arranged on the top plate (not shown) of the apparatus. An antenna unit 112 is provided on the endless belt. The antenna unit 112 can be moved up and down along a column (height 4.5 m or 7.5 m, not shown) that stands on the base and supports the top plate. The belt 110 is for turning the antenna, and is hung on an antenna turning pulley 113 provided on the opposite side of the belt 111 of the antenna unit 112. The belt 111 is for raising and lowering the antenna unit 112, and is fixed to the antenna unit 112 at two points, that is, a top surface and a bottom surface indicated by black circles 117 and 118, in the middle of the side opposite to the belt 110.

Next, the antenna turning section 120 will be described. The swivel pulley 113 is fixed to a horizontal shaft 114 that rotates the antenna, and has a groove 115 (shown by a broken line) having a narrow width of about 1/4 circumference formed on the outer peripheral surface thereof, and protrudes from the antenna unit 112. The provided stopper 116 (for example, a round bar having a spherical tip) is fitted in the groove 115. As shown, the stopper 116 projects toward the horizontal shaft 114 in the same horizontal plane as the horizontal shaft 114. Further, tension pulleys 121 and 122 for supporting the belt are provided at both ends thereof. Therefore, the turning pulley 113 can be rotated by 90 degrees, and the antenna can receive horizontal polarization and vertical polarization. The antenna swiveling pulley 113 rotatably supported on the horizontal shaft 114, the stopper 116, and the tension pulleys 121 and 122 constitute an antenna swiveling unit 120. The position of the turning pulley 113 shown in FIG. 6 is, for example, a vertically polarized wave reception state, and the position shown in FIG. 7 is a horizontally polarized wave reception state.

The antenna unit 112 is lifted and lowered by rotating the electric motor 101 in a desired direction while the brake 109 is open (the clutch 108 is connected). Since the belts 110 and 111 move at the same speed and are connected to the antenna unit 112 at the portions that move in the same direction, in principle, the antenna unit 112 is moved up and down without rotating the turning pulley 113.

On the other hand, when the antenna (not shown) is turned, the clutch 108 is released, the brake 109 is put in, the pulley 106 is not rotated (the belt 111 and the antenna unit 112 are stopped), and the electric motor 101 is required. Rotate in the direction of. Only the belt 110 moves and the orbiting pulley 113 rotates, stopping at the position where the stopper 116 and the end of the groove 115 come into contact with each other. The stop is due to the fact that the rotation of the pulley 106 is stopped by the action of the torque limiter 107 that is set to a size that does not damage the stopper 116.

Here, since the torque limiter 107 is installed, the motor 101 is oriented in the direction for vertical polarization (the rotation pulley in the figure) at the position of the rotation pulley 113 (position of vertical polarization) shown in FIG. When the rotating pulley 113 is operated in the clockwise direction), the turning pulley 113 does not rotate, and if the stopper 116 and the end of the groove 115 are separated from each other, the stopper 116 only comes into contact with the stopper 116 again, and the antenna You can perform the operation to check the turning of the.

[0009]

[Problems to be solved by the device]

 As described above, the conventional device has a complicated structure that uses the clutch 108, the brake 109, the torque limiter 107, etc., and is liable to fail, the operation is troublesome, and the operation may not be accurately transmitted, which is reliable. It lacked in sex and had a short life.

The disadvantages of the operation will be described with reference to FIGS. 6 and 7. In the case of FIG. 6 (or FIG. 7), when the antenna unit 112 is lowered (or raised), the moving direction of the belt 110 and the turning pulley Since the direction of the clockwise (counterclockwise) contact with the stopper 116 of 113 coincides, the antenna is correctly held for vertical polarization (horizontal polarization). However, when the antenna unit 112 is raised (or lowered), the moving direction of the belt 110 is the direction away from the stopper 116 of the turning pulley 113, so that the correct polarization position is maintained after raising (or lowering). It may not have been done. Normally, the device is remotely operated, and the operation status of the device is displayed on the operation panel. However, for the above-mentioned reason, it is necessary to perform the operation of confirming the antenna rotation or the antenna rotation after the antenna unit 112 is moved up and down. there were.

Therefore, a technical problem of the present invention is to provide an antenna raising / lowering / turning device having a simple mechanism and easy to operate.

[0012]

[Means for Solving the Problems]

 According to the present invention, the first annular belt, which is driven to extend in the vertical direction and to which the antenna unit is fixed, is installed in parallel with the first annular belt and is driven, and the antenna is rotated through the antenna swivel unit. An antenna elevating / revolving device including a second annular belt supporting the antenna unit, in which tension adjustment is performed to adjust the tension of a portion of the first annular belt extending to both sides of the antenna rotating portion. An antenna elevating / revolving device is provided which is provided with a mechanism and pivots the antenna unit in a direction along the tension.

According to the present invention, in the antenna elevating / revolving device, the antenna revolving unit has a pair of elastic members each having one end connected to both ends of the second annular belt and the other ends connected to each other. A slide bar fixed to a connecting portion between the other ends of the pair of elastic members, a rotation shaft provided on the antenna unit, and the slide bar and the rotation shaft connected to each other, And a swiveling lever that swivels around the slide metal in a wide angle range.

According to the present invention, in the antenna elevating / revolving device, the tension adjusting mechanism includes a pair of movable pulleys that support portions of the second annular belt that face each other, and the tension adjusting mechanism includes a pair of movable pulleys. A tension pulley that supports both sides of each of the pair of moving pulleys so as to be in a fixed position, and an operating rod that supports the moving pulleys at equal intervals and moves the moving pulleys toward or away from the first annular belt. It is possible to obtain an antenna elevating / revolving device characterized by including.

[0015]

[Action]

 In the present invention, the antenna unit is fixed to the first annular belt, and the first annular belt is extended and driven in the vertical direction. Further, the second annular belt is provided and driven in parallel with the first annular belt, and supports the antenna unit via the antenna turning portion.

The tension adjusting mechanism includes a pair of pulleys, a tension pulley, and an operating rod. The pair of moving pulleys support portions of the second annular belt that face each other, and are fixed to the operating rod at regular intervals so that the opposing portions always have regular intervals. The tension pulley supports the second annular belt with respect to the second annular belt such that opposing portions at both ends in the length direction of the moving pulley are in fixed positions. The actuating rods move these moving pools in a direction toward or away from the first annular belt.

Further, the tension adjusting mechanism adjusts the tension of the portion of the first annular belt that extends on both sides of the antenna turning portion as a boundary. The antenna swivel unit includes a slide metal, a rotation shaft, a swivel lever, and an elastic member. The elastic members are provided at both ends of the second annular belt, and have connecting portions connecting the other ends. A slide metal is fixed to this connection, and the rotating shaft is provided on the antenna unit. The swivel lever connects the slide and the rotating shaft.

Therefore, when tension is applied from the tension adjusting mechanism to the portions of the first annular belt that extend on both sides of the slide metal as a boundary, the turning lever rotates around the rotation axis within a predetermined angle range. Turn to. That is, the antenna unit to which this rotating shaft is fixed is swung in the direction along this tension direction.

[0019]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic plan view of a lower main portion of an antenna turning device according to an embodiment of the present invention.

In FIG. 1, two pulleys 25 and 26 having the same diameter are fixed to one shaft 10 and the shaft 10 is connected to an electric motor 101 via a speed reducer 102. Therefore, the pulleys 25 and 26 rotate at the same speed and in the same direction.

FIG. 2 and FIG. 3 are side views showing a main part related to the pulley 25 of the apparatus of FIG. 1, and FIG. 4 is a similar side view of the pulley 26 of the apparatus of FIG. In these figures, a lifting belt 20 and a rotating belt 21 are provided as a first annular belt and a second annular belt, respectively. A swivel belt 20 for an antenna is suspended from a pulley 25 'provided on a top plate (not shown) of the device, and the swivel belt 20 is diverted outward in the vicinity of the pulley 25 in opposite directions. A pulley row including a pair of moving pulleys 22 and 23 and a required tension pulley 24 is provided. The movable pulleys 22 and 23 are integrally attached to an operating rod 17 of a required length that slides in the extension direction of the swivel belt 20, and the operating rod 17 requires a plunger (not shown) and a linear motor (not shown). It is connected to a linear drive machine 18 that reciprocates over the distance. A tension adjusting mechanism is composed of these pulley rows, the operating rod 17 and the driving machine.

An elevating belt 21 of an antenna is hung on a pulley 26 ′ of the top plate of the apparatus, and the pulley 26 is fixed to the antenna unit 12 in the middle of the left side of the pulley 26 as shown in FIG. The fixing points are indicated by black circles 32 and 33. The antenna unit 12 can be raised and lowered along a column (not shown) of the device. The height of the stanchion is either 4.5 m for a measuring distance of 3 m or 10 m, or 7.5 m for a measuring distance of 30 m.

Next, the antenna turning section will be described. The swivel belt 20 moves up and down in the middle of the swivel lever 19 fixed to the horizontal shaft 14 for rotating the antenna of the antenna unit 2 and the left side of the pulley 25 (the same side where the elevating belt 21 is fixed to the antenna unit 12). The elastic member 27 is connected in a tensioned state.

The swivel lever 19 is regulated by stoppers 28 projecting at two upper and lower portions of the swivel lever 19 so as to rotate up and down about a horizontal plane within a range of 45 degrees, and is formed at a front end portion of the swivel lever 19. The cylindrical portion of the slide metal 30 is loosely fitted in the formed oval through hole 29. The slide 30 has a cylindrical portion integrally provided on a base portion that fits into a vertical groove (for example, a dovetail groove) 31 formed in the antenna unit 12, and the vertical groove 31 and the oval through hole. 29 to slide the swiveling lever 19 to rotate.

The elastic member 27 is, for example, two O-rings (two on the upper and lower sides, a total of four) and is set to have a strength slightly lower than the tensile strength of the swivel belt 20. And the both ends of the swivel belt 20 are connected in a slightly extended state.

The vertical groove 31 provided on the antenna unit 12, the pair of elastic members 27 provided on the turning belt 20, the turning lever 19, the turning shaft 14, and the stopper 28 constitute an antenna turning section 32. There is. When the turning lever 19 shown in FIG. 2 is in contact with the lower stopper 28, the antenna is in a vertically polarized wave receiving state. In the state of FIG. 2, the moving pulleys 22 and 23 are in the left fixed positions.

Since the device has the above-described configuration, the raising and lowering and the turning can be performed by the procedure described below. The elevation of the antenna unit 12 is performed by the elevation belt 21 by rotating the electric motor 101 in a desired direction. The swivel belt 20 moves at the same speed as the elevating belt 21, and the part that moves in the same direction is connected to the swivel lever 19 (slider 30), and the swivel lever 19 is for vertical polarization (Fig. 2). Since the elastic member 27 makes elastic contact with either of the stoppers 28 for either of the horizontally polarized waves (FIG. 3), the antenna unit 12 is held at the position of the turning lever 19 and the lifting belt 21 is lifted. Go up and down jointly with.

The turning of the antenna of the antenna unit 12 is performed by displacing the moving pulleys 22 and 23 by the linear drive 18 to one of the positions shown in FIGS. For example, when switching from the vertically polarized wave reception shown in FIG. 2 to the horizontally polarized wave reception in FIG. 3, the linear rod 18 moves the operating rod 17 to the right. The stroke (stroke) of the linear drive machine 18 is substantially the same as the stroke of the turning lever 19 (slider 30). As the operating rod 17 moves to the right, the pulley 22 loosens the lower left part of the swivel belt 20, and at the same time, the pulley 23 stretches the lower right part of the swivel belt 20. The part of the swivel belt 20 hung on the pulley 25 is immovable, but the part of the swivel belt 20 hung on the opposite (upper) pulley has the swivel lever 19 (slider 30) of the antenna unit 12 on the way. The slide metal 30 interlocks with the swivel belt 20 while keeping the swivel belt 20 in the same tensioned state to rotate the swivel lever 19 by 90 degrees.

[0029]

[Effect of the device]

 As described above, according to the present invention, since the pulley train and the linear drive are used instead of the conventional brakes, clutches, etc., it is possible to provide an antenna turning device having a simple structure.

Further, according to the present invention, since the antenna unit is lifted and lowered only by the electric motor and the antenna is rotated by the linear drive machine, it is possible to provide an antenna rotating device which is easy to operate.

Further, according to the present invention, since the swivel lever of the antenna is connected to the swivel belt in a tension state via the elastic member, the swivel lever can be accurately held at the end of the rotation range, and the operation display can be performed. It is possible to provide an antenna swivel device that improves reliability and eliminates the conventional confirmation operation.

Furthermore, according to the present invention, it is possible to provide an antenna swivel device having a simple structure, a small number of operations, and a failure-resistant structure, which has a long life.

[Brief description of drawings]

FIG. 1 is a plan view showing a lower main part of an embodiment of the present invention.

FIG. 2 is a side view showing a main part related to turning of the device of FIG.

FIG. 3 is a side view showing a main part related to turning of the device of FIG.

FIG. 4 is a side view showing a main part related to lifting and lowering.

FIG. 5 is a plan view of an essential part showing a conventional example.

FIG. 6 is a side view showing a main part and an operation of a conventional example.

FIG. 7 is a side view showing a main part and an operation of a conventional example.

[Explanation of symbols]

 10 axis 12 antenna unit 17 actuating rod 18 linear drive 19 swivel lever 20 swivel belt 21 lifting belt 22, 23 moving pulley 24 tension pulley 25, 25 ', 26, 26' pulley 27 elastic member 28 stopper 29 oval through hole 30 Sliding metal 31 Vertical groove 32 Antenna turning part 33 Tension adjusting mechanism 100a, 100b Shaft 101 Electric motor 102 Speed reducer 103, 104 Spur gear 105, 105 ', 106, 106' Pulley 107 Torque limiter 108 Clutch 109 Brake 110, 111 Belt 112 Antenna Unit 113 Antenna swivel pulley 114 Horizontal shaft 115 Groove 116 Stopper 120 Antenna swivel part 121,122 Tension pulley

Claims (3)

[Scope of utility model registration request] 1. A first annular belt, which is driven to extend in a vertical direction and has an antenna unit fixed thereto, and which is provided and driven in parallel with the first annular belt, and is driven via an antenna swivel portion. An antenna elevating / lowering device including a second annular belt that supports a unit, comprising: a tension adjusting mechanism that adjusts the tension of a portion of the first annular belt that extends to both sides of the antenna rotating portion. An antenna elevating / revolving device, which is provided and pivots the antenna unit in a direction along the tension. 2. The antenna lifting / turning device according to claim 1, wherein the antenna turning portion has a pair of elastic members each having one end connected to both ends of the second annular belt and the other ends connected to each other. , A sliding member fixed to a connecting portion between the other ends of the pair of elastic members, a rotating shaft provided in the antenna unit, the sliding member and the rotating shaft are connected to each other, and the sliding member is predetermined. An antenna raising / lowering device, comprising: a swiveling lever that swivels around the slide metal within an angular range. 3. The antenna elevating / lowering device according to claim 1, wherein the tension adjusting mechanism includes a pair of movable pulleys that support portions of the second annular belt that face each other, and the second pulley.
A tension pulley that supports both sides of each of the pair of moving pulleys with respect to the annular belt so as to be in a fixed position, and the moving pulley that is supported at equal intervals, and in a direction that approaches or separates from the first annular belt. An antenna lifting / turning device having an operating rod for moving.