Antenna mounting bracket

Abstract

Firstly, the pair of telescopic arms can be easily retracted even when extended, and secondly, it improves work efficiency by eliminating the need for ladders, stepladders, or aerial work platforms for workers to climb up and perform tasks such as adjusting the antenna. [Solution] The satellite communication antenna 2 is installed on a support column 3 at a distance from the top and bottom of the support column 3. The antenna support member 13 has a fixed arm 11a that is fixed to the support column 3 and a movable arm 11b that slides relative to the fixed arm 11a. The antenna support member 13 is supported at the ends of each of the upper and lower telescopic arms 11, 11, to which the satellite communication antenna 2 is attached, and is provided with a sliding handle 14 for a worker to grasp when sliding the movable arm 11b.

Description

Technical Field

[0001] The present invention relates to an antenna mounting bracket for mounting an antenna such as a satellite communication antenna, and particularly to an antenna mounting bracket having a slide function.

Background Art

[0002] As an antenna mounting bracket, for example, a bracket for supporting an antenna support member (referred to as a "mast mounting pipe" in Patent Document 1) that supports an antenna by a pair of upper and lower telescopic arms (referred to as "connectors" in Patent Document 1) that are overhanging members has been proposed (for example, refer to Patent Document 1). In this antenna mounting bracket, an example in which a pair of upper and lower telescopic arms are configured to be telescopic has also been proposed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the antenna mounting bracket of Patent Document 1, when the distance from the wall of a building or the like to which a pair of telescopic upper and lower telescopic arms are attached to the antenna is long, in order to perform maintenance such as adjustment or replacement of the antenna, even if a ladder or the like is hung on the wall of the building or the like, the hand of the worker may not reach the antenna or the antenna support member that supports the antenna, and there is a problem that workability is poor.

[0005] In addition, generally, when performing work such as adjustment of an antenna after mounting the antenna at a high place using such an antenna mounting bracket, ladders, step stools, aerial work platforms, etc. are required, so there is also a problem that workability is poor in this regard.

[0006] Therefore, the present invention has been made in view of these problems, and firstly, aims to provide an antenna mounting bracket that can be easily retracted even when a pair of telescopic arms are extended, and secondly, improves work efficiency by eliminating the need for ladders, stepladders, aerial work platforms, etc., which workers use to climb up and perform work when adjusting the antenna. [Means for solving the problem]

[0007] To solve the above problems, the antenna mounting bracket according to the present invention is characterized by comprising: a pair of upper and lower telescopic arms having a fixed arm installed at a distance from the object to which the antenna is to be installed in the vertical direction and a movable arm that slides relative to the fixed arm; and an antenna support member supported at the tip of each of the upper and lower telescopic arms, to which the antenna is attached, and which is provided with a sliding handle for a worker to grasp when sliding the movable arm. Furthermore, the antenna mounting bracket according to the present invention is characterized in that the fixed arm has a rectangular cross-section and is provided with bolt holes for connecting arms that penetrate vertically on its upper and lower sides, while the movable arm has a rectangular cross-section of the same size as the cross-sectional shape of the fixed arm and is provided with elongated holes for arm sliding that extend in the longitudinal direction of the movable arm and penetrate vertically on its upper and lower sides, and the length of the pair of upper and lower telescopic arms can be changed by placing the lower side of the movable arm on the upper side of the fixed arm and fastening the arm sliding connecting bolts through the bolt holes for connecting arms of the fixed arm and the elongated holes for arm sliding arms of the movable arm with nuts, thereby changing the overlapping length of the fixed arm and the movable arm. Furthermore, the antenna mounting bracket according to the present invention is also characterized in that the sliding handle comprises a pair of antenna support member clamping brackets that clamp the antenna support member and are fixed by fastening bolts and nuts; a pair of L-shaped brackets having a base fixed to each of the pair of antenna support member clamping brackets by the fastening bolts that fasten the pair of antenna support member clamping brackets together, and a side plate portion that extends from the base portion at a nearly right angle and has a bolt hole for gripping on the tip side; a bolt for gripping that is passed through the bolt hole for gripping on one side plate portion of the pair of L-shaped brackets and protrudes from the bolt hole for gripping on the other side plate portion and is fastened with a nut; and a collar for gripping that is fitted around the outer circumference of the bolt for gripping between the side plates of the pair of L-shaped brackets and is gripped by a worker. Furthermore, the antenna mounting bracket according to the present invention is also characterized in that the antenna support member is a pole-shaped antenna support member with a circular cross-section. Furthermore, the antenna mounting bracket according to the present invention is also characterized in that, of the pair of upper and lower telescopic arms, at least the fixed arm constituting the lower telescopic arm is provided with scaffolding on both the left and right sides for the left and right feet of a worker. Furthermore, the antenna mounting bracket according to the present invention is characterized in that, of the pair of upper and lower telescopic arms, at least two scaffolding bolt holes penetrating in the left-right direction are provided on both the left and right sides of the fixed arm which constitutes the lower telescopic arm, and scaffolding bolts are provided protruding from the sides of the fixed arm through the two scaffolding bolt holes, respectively, to serve as scaffolding on both the left and right sides. Furthermore, the antenna mounting bracket according to the present invention is also characterized in that the distance between the tips of the two scaffolding bolts, each provided in the two scaffolding bolt holes of the fixed arm, is greater than the width of the sliding arm. Furthermore, the antenna mounting bracket according to the present invention is also characterized in that the sliding handle is configured such that even when the movable arm is slid toward the fixed arm to shorten the length of the pair of upper and lower telescopic arms to their maximum extent, the length does not exceed the length of the scaffolding bolt. Furthermore, the antenna mounting bracket according to the present invention is characterized in that the antenna support member is provided with bolt holes at the bottom for fixing the movable arms that constitute the lower pair of telescopic arms of the upper and lower pair of telescopic arms, while a plurality of bolt holes are provided at the top, spaced apart in the vertical direction, for fixing the movable arms that constitute the upper pair of telescopic arms of the upper and lower pair of telescopic arms. [Effects of the Invention]

[0008] In this invention, the antenna support members, which are supported at the ends of the movable arms of each of the upper and lower telescopic arms and to which the antennas are attached, are provided with sliding handles for the worker to grasp when sliding the movable arms. Therefore, when adjusting an antenna after it has been installed at a high location, workers can perform maintenance work on the antenna by climbing onto the support pole or other object on which the antenna is installed and pulling the sliding handle, without having to use ladders, step ladders, or aerial work platforms, thus improving work efficiency. [Brief explanation of the drawing]

[0009] [Figure 1] This is a front view of the antenna mounting bracket according to an embodiment of the present invention when it is fully extended. [Figure 2] This is a plan view of the antenna mounting bracket according to an embodiment of the present invention when it is fully extended. [Figure 3] This is a front view of the antenna mounting bracket according to an embodiment of the present invention when it is retracted to its maximum extent. [Figure 4] This is a plan view of the antenna mounting bracket according to an embodiment of the present invention when it is contracted to its maximum extent. [Figure 5] (a) to (c) are plan view, front view, and bottom view of the fixed arm constituting the antenna mounting bracket according to the embodiment of the present invention. [Figure 6] (a) to (c) are left side view, EE line cross-sectional view, and FF line cross-sectional view of the fixed arm constituting the antenna mounting bracket of the embodiment according to the present invention, respectively. [Figure 7] (a) and (b) are respectively an enlarged partial sectional view of part A and an enlarged sectional view of part B in FIG. 1. [Figure 8] (a) to (f) are respectively a front view, a plan view, a side view, a sectional view taken along line G - G, and a sectional view taken along line H - H of the movable arm constituting the antenna mounting bracket according to the embodiment of the present invention. [Figure 9] (a) to (e) are respectively a plan view, a front view, a bottom view, a sectional view taken along line I - I, and a sectional view taken along line J - J of the antenna support member mounting bracket constituting the antenna mounting bracket according to the embodiment of the present invention. [Figure 10] (a) to (d) are respectively a front view, a plan view, a sectional view taken along line K - K, and a sectional view taken along line L - L of the antenna support member constituting the antenna mounting bracket according to the embodiment of the present invention. [Figure 11] (a) to (c) are respectively a front view, a plan view, and a left side view of the slide handle constituting the antenna mounting bracket according to the embodiment of the present invention. [Figure 12] It is an enlarged front view of part C in FIG. 3. [Figure 13] It is an enlarged plan view of part D in FIG. 4. [Figure 14] (a) to (d) are respectively a plan view, a front view, a left side view, and a right side view of the band bracket constituting the antenna mounting bracket according to the embodiment of the present invention. [Figure 15] It is a front view showing a state where an operator holds the slide handle with the antenna mounting bracket according to the embodiment of the present invention in a maximally extended state. [Figure 16] It is a front view showing a state where after holding and contracting the slide handle constituting the antenna mounting bracket according to the embodiment of the present invention, the operator places a foot on the scaffold bolt and is performing antenna adjustment or the like.

Embodiments for Carrying Out the Invention

[0010] Hereinafter, an embodiment of the antenna mounting bracket according to the present invention will be described with reference to the drawings. Note that the embodiments described below are merely examples of the present invention, and the present invention is not limited thereto, and can be appropriately modified within the scope of the technical idea of the present invention.

[0011] <Configuration of the Antenna Mounting Bracket 1 of the Embodiment> The antenna mounting bracket 1 of the embodiment according to the present invention includes, for example, a pair of upper and lower telescopic arms 11, 11 as shown in FIGS. 1 to 4, an antenna support member mounting bracket 12, an antenna support member 13, a slide handle 14, a scaffold bolt 15, a band bracket 16, etc., and is a bracket for attaching the satellite communication antenna 2 to a column 3 which is an object for installing the antenna. Note that, in addition to the antenna mounting bracket 1 of the embodiment, a rod-shaped antenna 2' is attached to the column 3 via another band bracket 16' and an antenna mounting bracket 17', etc., and the antenna mounting bracket 1 and the satellite communication antenna 2 of the embodiment are fixed to the same column 3 so as not to interfere with another band bracket 16' and an antenna mounting bracket 17', etc.

[0012] (Telescopic Arms 11, 11) The pair of upper and lower telescopic arms 11, 11 are each installed by two band brackets 16, 16 at intervals in the vertical direction of the column 3 on which the satellite communication antenna 2 is installed, and have a fixed arm 11a fixed to the column 3 and a movable arm 11b that slides with respect to the fixed arm 11a.

[0013] (Fixed Arm 11a) As shown in Figures 5(a)-(c) and 6(a)-(c), the fixed arm 11a is made of a square-shaped tube (square pipe) with a width W1, having an upper side 11a1, a lower side 11a2, and a pair of lateral sides 11a3, 11a3. The upper side 11a1 and lower side 11a2 are provided with round-shaped arm connecting bolt holes 11a11, 11a12, 11a21, 11a22, through which arm connecting bolts 11c, 11c pass in the vertical direction. The arm connecting bolts 11c, 11c are fastened in a double-nut manner by two arm connecting nuts 11d, 11d, respectively.

[0014] As shown in Figure 5(b), two square-shaped bolt holes 11a31, 11a31 for fixing the band fitting 16 are provided on the pair of lateral sides 11a3, 11a3 at the rear end of the fixed arm 11a. In addition, a reinforcing body 11a4 is provided on the lower side surface 11a2 of the rear end by welding or the like. In a front view, it is triangular, has the same width W1 as the fixed arm 11a, and has a support column contact plate 11a41 at the rear end.

[0015] Furthermore, the side surfaces 11a3, 11a3 on both sides of the tip of the fixed arm 11a are provided with square-shaped scaffolding bolt holes 11a32, 11a33 for connecting scaffolding bolts 15 on the left and right sides, respectively. However, as shown in Figures 1, 3, 7, etc., the scaffolding bolts 15 are inserted only into the scaffolding bolt holes 11a32, 11a33 of the fixed arm 11a that constitutes the lower telescopic arm 11 of the pair of upper and lower telescopic arms 11, 11, and no scaffolding bolts 15 are provided on the fixed arm 11a of the upper telescopic arm 11.

[0016] Furthermore, the scaffolding bolt hole 11a32 provided at the front of the lateral side surface 11a3 of the fixed arm 11a, and the arm connecting bolt holes 11a11 and 11a21 provided at the front of the upper side surface 11a1 and lower side surface 11a2 of the fixed arm 11a, are offset from each other to the extent that the outer surfaces of the scaffolding bolt 15a and the arm connecting bolt 11c passing through them make contact, as shown in Figures 7(a) and (b), etc.

[0017] Therefore, in the lower telescopic arm 11, when sliding the movable arm 11b relative to the fixed arm 11a or when placing a worker's foot (work boots) on the scaffolding bolt 15a, even if an external force is applied to the arm connecting bolt 11c or scaffolding bolt 15a, the outer surfaces of the two scaffolding bolts 15a, 15a passed through the fixed arm 11a and the arm connecting bolts 11c, 11d, specifically the leading scaffolding bolt 15a and the arm connecting bolt 11c, can come into contact with each other, thereby transmitting the external force and stabilizing the leading scaffolding bolt 15a and the arm connecting bolt 11c. Furthermore, it is not essential in this invention that the outer surfaces of the scaffolding bolt 15a and the arm connecting bolt 11c come into contact with each other. It is also perfectly acceptable to provide the scaffolding bolt hole 11a32 on the lateral side surface 11a3 of the fixed arm 11a, and the arm connecting bolt holes 11a11 and 11b21 on the upper side surface 11a1 and lower side surface 11a2, so that they intersect with a small gap between them.

[0018] (Movable arm 11b) As shown in Figures 8(a) to 8(f), the movable arm 11b is made of a square-shaped tube (square pipe) having an upper side 11b1 and a lower side 11b2 and a pair of lateral sides 11b3, 11b3 with the same width W1 as the fixed arm 11a. The upper side 11b1 and lower side 11b2 are provided with elongated holes 11b11 and 11b21 for arm sliding that extend in the longitudinal direction of the movable arm 11b and penetrate in the vertical direction.

[0019] This allows the length of the upper and lower telescopic arms 11, 11 to be changed by placing the lower side 11b2 of the movable arm 11b on the upper side 11a1 of the fixed arm 11a, and by passing slide guide bolts 11a3 through the arm connecting bolt holes 11a11, 11a12, 11a21, 11a22 of the fixed arm 11a and the slide elongated hole 11b11 of the movable arm 11b and fastening them with nuts 11a4 to change the overlapping length of the fixed arm 11a and the movable arm 11b.

[0020] Furthermore, the lateral sides 11b, 11b of the movable arm 11b are provided with two square bolt holes 11b31 for attaching the antenna support member mounting bracket 12 that supports the antenna support member 13.

[0021] (Antenna support mounting bracket 12) The antenna support member mounting bracket 12 is a bracket that is attached to the tip of the movable arm 11b and supports the antenna support member 13, as shown in Figures 1 to 4, and is formed in a U-shape from an upper plate portion 12a and a pair of side plate portions 12b, 12b that are bent at 90 degrees from both the left and right sides of the upper plate portion 12a.

[0022] The upper plate portion 12a is provided with a U-shaped groove portion 12a1.

[0023] On the other hand, the pair of side plates 12b, 12b are provided with two horizontal bolt holes 12b1 for connecting arms, which are aligned with the bolt holes 11b31, 11b31 for antenna support members provided at the tip of the movable arm 11b, through which bolts 11e are passed and fastened with nuts 11f. In addition, the pair of side plates 12b, 12b are provided with two vertical bolt holes 12b2, 12b3 for connecting antenna support members, which are aligned with the horizontal bolt holes 13b, 13b of the antenna support member 13, through which bolts 11g are passed and fastened with nuts 11h.

[0024] (Antenna support member 13) As shown in Figures 1 to 4, the antenna support member 13 is a member that is supported at the tips of the movable arms 11b, 11b of the upper and lower telescopic arms 11, 11 via antenna support member mounting brackets 12, 12. As shown in Figures 10(a) to (d), it is made of a pipe (round tube) with a cylindrical cross-section, and the satellite communication antenna 2 is attached to its upper part.

[0025] Below the antenna support member 13, there are two bolt holes 13a for connecting the lower arm, through which a bolt 11g is passed to fix the movable arm 11b that makes up the lower telescopic arm 11 of the pair of upper and lower telescopic arms 11, 11.

[0026] On the other hand, above the antenna support member 13, there are three or more (seven in this embodiment) upper arm connecting bolt holes 13b through which a bolt 11g is passed to fix the movable arm 11b that constitutes the upper telescopic arm 11 of the pair of upper and lower telescopic arms 11, 11, so that the height at which the upper movable arm 11b is fixed, that is, the height at which the upper telescopic arm 11 is fixed, can be changed. This is because if the vertical distance between the pair of upper and lower telescopic arms 11, 11 is not changed by other band fittings 16' fixed to the support column 3, it may not be possible to fix the band fitting 16 for fixing the antenna mounting bracket 1 of this embodiment to the support column 3. Therefore, seven upper arm connecting bolt holes 13b are provided at intervals in the vertical direction so that the vertical distance between the pair of upper and lower telescopic arms 11, 11 can be changed.

[0027] (Slide handle 14) The sliding handle 14 is a component for the worker to grasp when sliding the movable arm 11b, and consists of a pair of antenna support member clamping fittings 14a, 14a that clamp the antenna support member 13 and are fixed by fastening bolts 14b and nuts 14c, as shown in Figures 11(a) to (c), a pair of L-shaped fittings 14d, 14d that are fixed to the pair of antenna support member clamping fittings 14a, 14a respectively by fastening bolts 14b that fasten the pair of antenna support member clamping fittings 14a, 14a together, a gripping bolt 14e that connects the tips of the L-shaped fittings 14d, 14d, and a gripping collar 14g made of resin or the like that is fitted around the outer circumference of the gripping bolt 14e between the pair of L-shaped fittings 14d, 14d for the worker to grasp.

[0028] Here, as shown in Figures 10(a) and (b), the pair of antenna support member clamping fittings 14a, 14a have a curved portion in the center so as to clamp the outer circumference of the cylindrical antenna support member 13, and fastening bolt insertion holes are provided on both sides of the curved portion, into which fastening bolts 14b are inserted.

[0029] Each pair of L-shaped brackets 14d, 14d has a base portion 14d1, 14d1 fixed to each of the pair of antenna support member clamping brackets 14a, 14a by fastening bolts 14b, and side plate portions 14d2, 14d2 that bend almost at a right angle from the base portion 14d1, 14d1 and have bolt holes for gripping at the tip. The distance W2 between the side plate portions 14d2, 14d2 of the pair of L-shaped brackets 14d, 14d is larger than the width W1 of the fixed arm 11a and movable arm 11b that constitute the pair of upper and lower telescopic arms 11, 11, as shown in Figure 13 and other figures described later.

[0030] Furthermore, since the side plates 14d2, 14d2 of the pair of L-shaped brackets 14d, 14d are connected by a gripping bolt 14e and nut 14f across a width W2, the width W2' of the sliding handle 14 is greater than the distance W2 between the side plates 14d2, 14d2 of the L-shaped brackets 14d, 14d, as shown in Figure 13, etc.

[0031] Furthermore, as shown in Figures 1 and 2, and Figure 12, which is an enlarged view of the main part thereof, even when the movable arm 11b is slid toward the fixed arm 11a to shorten the length of the pair of upper and lower telescopic arms 11, 11 to their maximum extent, the tip of the sliding handle 14, that is, the right end of the pair of L-shaped fittings 14d, 14d of the sliding handle 14 in Figure 12, is configured to be no longer than the left and right scaffolding bolts 15a, 15a provided on both the left and right sides of the fixed arm 11a of the lower telescopic arm 11, that is, no longer than the line L1 connecting the scaffolding bolt holes 11a32, 11a32 provided on the lateral sides 11a3, 11a3 of each fixed arm 11a, 11a of the pair of upper and lower telescopic arms 11, 11.

[0032] The gripping bolt 14e is a bolt that is passed through the gripping bolt hole of one of the pair of L-shaped brackets 14d, 14d (the lower one in Figure 11(b)) and protrudes from the gripping bolt hole of the other side plate 14d2 (the upper one in Figure 11(b)), and is fastened with a nut 14f.

[0033] The gripping collar 14g is a pipe made of resin or the like that is fitted to the outside of the gripping bolt 14e between the side plates 14d2, 14d2 of a pair of L-shaped brackets 14d, 14d, and is gripped by the worker.

[0034] (Scaffolding bolts 15a, 15a) The scaffolding bolts 15a, 15a are components that serve as scaffolding for the left and right feet of a worker, installed on both the left and right sides of the fixed arm 11a that makes up the lower telescopic arm 11 of the pair of upper and lower telescopic arms 11, 11, as shown in Figures 1 to 4, Figures 12, 13, etc. The fixed arm 11a that makes up the lower telescopic arm 11 is installed on both the left and right sides of the fixed arm 11a of the lower telescopic arm 11 by passing the same scaffolding bolts 15a, 15a through two scaffolding bolt holes 11a32, 11a33 that penetrate in the left-right direction, and fastening them with nuts 15b, 15b.

[0035] Here, as shown in Figure 13, the distance W3 between the tips of the scaffolding bolts 15a, 15a attached to the fixed arm 11a of the lower telescopic arm 11 is greater than the width W2 of the sliding arm 14.

[0036] (Band fitting 16) The band fitting 16 is a well-known type also called a flexible band, and as shown in Figures 14(a) to (d), it has a plurality of through holes 16a2 formed at predetermined intervals on one end and a plurality of pairs of band pieces 16a, 16a with tightening receiving parts 16a1, 16a1 formed on the other end, and a pair of auxiliary band pieces 16b, 16b that connect the pair of band pieces 16a, 16a by band length adjustment bolts 16c and nuts 16d by aligning the through hole 16a1 of any one of the plurality of through holes 16a1 formed on one side of the plurality of pairs of band pieces 16a, 16a with the through hole of the band piece itself.

[0037] The band fitting 16 is configured such that the connecting portions 16b1, 16b1 of a pair of auxiliary band pieces 16b, 16b are fastened together by two connecting bolts 16e and nuts 16f through two bolt holes formed therein, while the fastening receiving portions 16a1, 16a1 of a pair of band pieces 16a, 16a are fastened together by fastening bolts 16g and nuts 16h through bolt holes formed therein to wrap around and fix to the support column 3.

[0038] <Method of using the antenna mounting bracket 1 according to the embodiment of the present invention> Next, a method for adjusting the satellite communication antenna 2 using the antenna mounting bracket 1 of the embodiment of the present invention configured as described above will be explained.

[0039] As shown in Figures 1 to 4, when inspecting or adjusting a satellite communication antenna 2 attached to the upper end of the antenna support member 13 of an antenna mounting bracket 1 according to an embodiment of the present invention, which is attached to a support column 3 by two band fittings 16, 16, a worker climbs up the support column 3 to which the antenna mounting bracket 1 of the embodiment is attached, for example as shown in Figure 15, and rises to the height of the antenna mounting bracket 1. Here, the satellite communication antenna 2 is assumed to be attached with the pair of telescopic arms 11, 11 of the antenna mounting bracket 1 of the embodiment extended to their maximum extent, as shown in Figure 15.

[0040] In this case, the worker first loosens the two arm connecting nuts 11d, 11d on each of the arm connecting bolts 11c, 11c that were fixing the fixed arm 11a and the movable arm 11b to each of the upper and lower telescopic arms 11, 11, thereby making it possible to slide the movable arm 11b relative to the fixed arm 11a.

[0041] Next, as shown in Figure 15, the worker grasps the sliding handle 14 attached to the antenna support member 13 of the antenna mounting bracket 1 of the embodiment and pulls it in the direction of the arrow to slide the movable arm 11b toward the support column 3, thereby pulling the satellite communication antenna 2 toward the support column 3.

[0042] Then, the upper and lower movable arms 11b, 11b that make up the pair of upper and lower telescopic arms 11, 11 move along the upper and lower fixed arms 11a, 11a, and the satellite communication antenna 2 moves closer to the support column 3. When the movable arm 11b is slid to its maximum extent toward the support column 3, that is, when the pair of telescopic arms 11, 11 are retracted to their maximum extent, the state is as shown in Figures 3 and 4.

[0043] Then, as shown in Figures 3 and 4, when the worker retracts the pair of upper and lower telescopic arms 11, 11, he can climb onto the upper telescopic arm 11 of the antenna mounting bracket 1 of the embodiment, and then sit down on the telescopic arm 11 on the side of the upper telescopic arm 11 of the antenna mounting bracket 1 of the embodiment, for example as shown in Figure 16.

[0044] At that time, the worker's feet (work boots) rest on scaffolding bolts 15a, 15a, which are passed through scaffolding bolt holes 11a32, 11a33 on both the left and right sides of the fixed arm 11a that constitutes the lower telescopic arm 11 and fastened with nuts 15b, respectively, allowing the worker to reach out to the satellite communication antenna 2 attached to the top of the antenna support member 13 to perform maintenance work such as adjustment and inspection.

[0045] Therefore, even when installing the satellite communication antenna 2 at a high position on the support pole 3, and extending the pair of telescopic arms 11, 11, and then performing maintenance work such as adjustment on the satellite communication antenna 2 after installation, workers can climb the support pole 3 on which the satellite communication antenna 2 is installed, pull the sliding handle 14 to bring the satellite communication antenna 2 closer to the support pole 3, and perform maintenance work on the satellite communication antenna 2 without using ladders, step ladders, or aerial work platforms, thus improving work efficiency.

[0046] Furthermore, as shown in Figure 16, even when the pair of upper and lower telescopic arms 11, 11 constituting the antenna mounting bracket 1 are retracted to their maximum extent, the L-shaped brackets 14d, 14d tips and gripping bolts 14e, etc. that constitute the sliding handle 14 of the antenna mounting bracket 1 of the embodiment, as shown in Figure 10, do not cross the line L1 connecting the scaffolding bolts 15a, 15a, that is, the scaffolding bolt holes 15a32, 11a32 on the tip side of the fixed arms 11a, 11a of the pair of upper and lower telescopic arms 11, 11. Therefore, as shown in Figure 15, even if a worker places their feet on the scaffolding bolts 15a, 15a, the worker's knees can be kept from touching the L-shaped brackets 14d, 14d tips, gripping bolts 14e, gripping collars 14g, etc. that constitute the sliding handle 14, allowing the worker to perform the work with minimal contact.

[0047] Therefore, workers can safely and reliably perform maintenance work on the satellite communication antenna 2 by placing their feet (work boots) on the scaffolding bolts 15a, 15a, thereby improving work efficiency.

[0048] Furthermore, the tips of the scaffolding bolts 15a, 15a protrude to the left and right of the fixed arm 11a of the lower telescopic arm 11, as shown in Figures 11 and 12, etc., more than the tips of the L-shaped brackets 14d, 14d that constitute the sliding handle 14 and the gripping bolts 14e. As shown in Figure 15, even if a worker places their feet on the scaffolding bolts 15a, 15a, the worker's feet (work boots) will not come into contact with the tips of the L-shaped brackets 14d, 14d that constitute the sliding handle 14, the gripping bolts 14e, the gripping collars 14g, etc., making it possible to safely and reliably perform maintenance work on the satellite communication antenna 2, and thus improving work efficiency.

[0049] <Summary of the antenna mounting bracket 1 according to the embodiment of the present invention> As described above, the antenna mounting bracket 1 of the embodiment of the present invention is installed at a distance from the vertical direction of the support column 3, which is the object on which the satellite communication antenna 2 is to be installed, and comprises a pair of upper and lower telescopic arms 11, 11 having a fixed arm 11a fixed to the support column 3 and a movable arm 11b that slides relative to the fixed arm 11a, and an antenna support member 13 supported at the ends of each of the upper and lower telescopic arms 11, 11, to which the satellite communication antenna 2 is attached, and which is provided with a sliding handle 14 for a worker to grasp when sliding the movable arm 11b.

[0050] Therefore, according to the antenna mounting bracket 1 of the embodiment of the present invention, even when installing the satellite communication antenna 2 at a high place and extending the pair of telescopic arms 11, 11, and then performing maintenance work such as adjusting the satellite communication antenna 2 after installation, the worker can pull the sliding handle 14 to retract the pair of upper and lower telescopic arms 11, 11 and perform maintenance work on the satellite communication antenna 2, thereby improving the efficiency of maintenance work on the satellite communication antenna 2.

[0051] Furthermore, in the antenna mounting bracket 1 of the embodiment of the present invention, the fixed arm 11a has a square cross-section, and bolt holes 11a11, 11a12, 11a21, 11a22 for connecting arms that penetrate in the vertical direction are provided on its upper and lower sides 11a1, 11a2, while the movable arm 11b has the same square cross-section as the fixed arm 11a, and elongated sliding holes 11b11 that extend in the longitudinal direction of the movable arm 11b and penetrate in the vertical direction are provided on its upper and lower sides 11b1, 11b2, and the upper side of the fixed arm 11a The lower side surface 11b2 of the movable arm 11b is placed on the surface 11a1, and two arm connecting bolts 11c, 11c are passed through the arm connecting bolt holes 11a11, 11a12, 11a21, 11a22 of the fixed arm 11a and the sliding elongated hole 11b11 of the movable arm 11b. These bolts are fastened in a double-nut configuration with two nuts 11d, 11d each, thereby changing the overlapping length of the fixed arm 11a and the movable arm 11b, and thus the length of the upper and lower telescopic arms 11, 11 can be changed.

[0052] Therefore, in a pair of telescopic arms 11, 11, the fixed arm 11a and the movable arm 11b, both having the same square cross-section, are stacked vertically and slid together. By using the same steel pipe for both the fixed arm 11a and the movable arm 11b, costs can be reduced.

[0053] In particular, as shown in Figures 3 and 4, when the pair of upper and lower telescopic arms 11, 11 are retracted to their maximum extent, the strength (load-bearing capacity) of the pair of upper and lower telescopic arms 11, 11 is improved because the movable arm 11b overlaps the fixed arm 11a of the same cross-sectional size in each of the pair of upper and lower telescopic arms 11, 11. Therefore, as shown in Figure 15, even when a worker sits on the upper telescopic arm 11 of the antenna mounting bracket 1 and the worker's feet (work boots) rest on the scaffolding bolts 15a, 15a provided on both the left and right sides of the fixed arm 11a that constitutes the lower telescopic arm 11, the worker's weight can be efficiently supported by the pair of upper and lower telescopic arms 11, 11, thereby improving work efficiency.

[0054] Furthermore, in the antenna mounting bracket 1 of the embodiment of the present invention, the sliding handle 14 consists of a pair of antenna support member clamping brackets 14a, 14a that clamp the antenna support member 13 and are fixed by fastening bolts 14b and nuts 14c, a pair of L-shaped brackets 14d, 14d that are fixed to the pair of antenna support member clamping brackets 14a, 14a respectively by fastening bolts 14b that fasten the pair of antenna support member clamping brackets 14a, 14a together, a gripping bolt 14e that connects the tips of the L-shaped brackets 14d, 14d, and a gripping collar 14g that is fitted around the outer circumference of the gripping bolt 14e between the pair of L-shaped brackets 14d, 14d and is gripped by a worker.

[0055] Therefore, the sliding handle 14 clamps and fixes the antenna support member 13 using a pair of antenna support member clamping fittings 14a, 14a fastening bolts 14b and nuts 14c that fasten the fittings together, making it possible to attach the handle 14 to any height on the antenna support member 13, thus improving workability.

[0056] In particular, since the sliding handle 14 is fixed to the antenna support member 13, which is made of a pipe with a circular cross-section, by clamping a pair of antenna support member clamping fittings 14a, 14a together with fastening bolts 14b and nuts 14c, the horizontal angle of the sliding handle 14 relative to the antenna support member 13 can be fixed at any horizontal angle, which also improves workability.

[0057] Furthermore, in the antenna mounting bracket 1 of the embodiment of the present invention, scaffolding bolts 15a, 15a are provided protruding from the sides of the fixed arm 11a, which constitutes at least the lower telescopic arm 11 of the pair of upper and lower telescopic arms 11, 11, on both the left and right sides of the fixed arm 11a, respectively, to serve as footing for the left and right feet of a worker.

[0058] Therefore, when performing maintenance work such as adjusting the satellite communication antenna 2 after it has been installed at a high position on the support pole 3, as shown in Figure 15, the worker can straddle the antenna mounting bracket 1 of the embodiment, sit on the upper telescopic arm 11, and place their feet (work boots) on the scaffolding bolts 15a, 15a to perform the work. As a result, the worker does not need a ladder, step ladder, or aerial work platform, and thus work efficiency can be improved.

[0059] Furthermore, in the antenna mounting bracket 1 of the embodiment of the present invention, two scaffolding bolt holes 11b31, 11b32 are provided on both the left and right sides of the fixed arm 11a, which constitutes at least the lower of the pair of upper and lower telescopic arms 11, 11, and scaffolding bolts 15a, 15a are passed through these multiple scaffolding bolt holes 11b31, 11b32, respectively, so as to protrude from the side of the fixed arm 11a.

[0060] Therefore, scaffolding can be easily erected using the scaffolding bolts 15a, 15a provided on both the left and right sides of the fixed arm 11a that constitutes the lower telescopic arm 11, and costs can be reduced. In addition, when a worker climbs the support column 3 from below towards the antenna mounting bracket 1 and gets onto the upper telescopic arm 11 as shown in Figure 15, they can grasp the scaffolding bolts 15a, 15a, thus improving work efficiency.

[0061] Furthermore, in the antenna mounting bracket 1 of the embodiment according to the present invention, the distance W3 between the tips of the scaffolding bolts 15a, 15a attached to the fixed arm 11a that constitutes the lower telescopic arm 11 is set to be larger than the width W2 of the sliding arm 14.

[0062] Therefore, as shown in Figure 15, even when a worker places their feet (work boots) on top of the scaffolding bolts 15a, 15a while working, the worker can spread both feet wider than the width W2 of the sliding arm 14, preventing interference such as the worker's knees hitting the sliding arm 14. This makes it possible to perform maintenance work on the satellite communication antenna 2 safely and reliably, and thus improves work efficiency.

[0063] Furthermore, in the antenna mounting bracket 1 of the embodiment according to the present invention, even when the movable arm 11b is slid toward the fixed arm 11a side to shorten the length of the pair of upper and lower telescopic arms 11, 11 to the maximum extent, as shown in Figures 11 and 12, the sliding handle 14 is configured to be no longer than the left and right scaffolding bolts 15a, 15a.

[0064] Therefore, as shown in Figure 15, even when the pair of upper and lower telescopic arms 11, 11 constituting the antenna mounting bracket 1 are retracted to their maximum extent, and a worker sits on the upper telescopic arm 11 with their feet (work boots) resting on the scaffolding bolts 15a, 15a while working, it is possible to prevent the worker's knees from hitting the tips of the L-shaped brackets 14d, 14d constituting the sliding handle 14, the gripping bolts 14e, or the gripping collars 14g. In this respect as well, maintenance work on the satellite communication antenna 2 can be performed safely and reliably, and work efficiency can be improved.

[0065] Furthermore, in the antenna mounting bracket 1 of the embodiment of the present invention, the antenna support member 13 is provided with a lower arm connecting bolt hole 13a at the bottom for fixing the movable arm 11b that constitutes the lower telescopic arm 11 of the pair of upper and lower telescopic arms 11, 11, while at the top, there are multiple upper arm connecting bolt holes 13b that are spaced apart in the vertical direction for fixing the movable arm 11b that constitutes the upper telescopic arm 11 of the pair of upper and lower telescopic arms 11, 11.

[0066] Therefore, when changing the vertical distance between the pair of telescopic arms 11, 11 using other band fittings fixed to the support column 3, it is possible to change the vertical distance between the pair of telescopic arms 11, 11 by selecting from among the multiple upper arm connecting bolt holes 13b provided at intervals, thereby ensuring that the satellite communication antenna 2 is installed at the optimal height. [Explanation of symbols]

[0067] 1. Antenna mounting bracket 11 Extendable Arm 11a Fixed Arm 11a1 Top side 11a11, 11a12 Bolt holes for connecting arms 11a2 Bottom side 11a21, 11a22 Bolt holes for connecting arms 11a3 Lateral side 11a31 Bolt holes for band fittings 11a32 Bolt holes for scaffolding 11a4 Reinforcement Plate 11b Movable arm 11b1 Top side 11b11 Slotted hole for slide 11b2 Lower side 11b21 Slotted hole for slide 11b3 Lateral side 11b31 Bolt holes for antenna support members 12 Antenna support mounting bracket 12a Upper plate section 12a1 U-shaped groove 12b Side plate part 12b1 Bolt hole b1 for arm connection 12b2 Bolt holes for connecting antenna support members 13 Antenna support member 13a Bolt holes for connecting the lower arm 13b Bolt holes for connecting the upper arm 14. Handle for sliding 14a Antenna support member clamping bracket 14b Fastening bolts 14c nut 14d L-shaped bracket 14e Bolt for gripping section 14f nut 14g gripping collar 15a, 15b Scaffolding bolts 15c nut 16 Band fittings 2 Satellite communication antenna

Claims

1. A pair of upper and lower telescopic arms, each having a fixed arm installed at a distance from the object to which the antenna is to be mounted, and a movable arm that slides relative to the fixed arm, An antenna support member is provided, which is supported at the ends of each of the pair of upper and lower telescopic arms, to which an antenna is attached, and which is also provided with a sliding handle for a worker to grasp when sliding the movable arm. An antenna mounting bracket characterized by having the following features.

2. In the antenna mounting bracket according to claim 1, The aforementioned fixed arm has a rectangular cross-section, and bolt holes for connecting the arm are provided on its upper and lower sides, penetrating in the vertical direction. The movable arm has a rectangular cross-section of the same size as the cross-sectional shape of the fixed arm, and its upper and lower sides are provided with elongated holes for arm sliding that extend in the longitudinal direction of the movable arm and penetrate in the vertical direction. An antenna mounting bracket characterized in that the lower side of the movable arm is placed on the upper side of the fixed arm, and the length of the pair of upper and lower telescopic arms can be changed by passing an arm slide connecting bolt through the arm connecting bolt hole of the fixed arm and the arm slide elongated hole of the movable arm and fastening them with a nut, thereby changing the overlapping length of the fixed arm and the movable arm.

3. In the antenna mounting bracket according to claim 1, The aforementioned sliding handle is, A pair of antenna support member clamping fittings that clamp the aforementioned antenna support member and are fixed by fastening bolts and nuts, A pair of L-shaped brackets, each having a base portion fixed to the pair of antenna support member clamping brackets by the fastening bolts that fasten the pair of antenna support member clamping brackets together, and a side plate portion that extends from the base portion at a nearly right angle and has a bolt hole for a gripping portion on the tip side, A gripping bolt is passed through the gripping bolt hole in one side plate of the pair of L-shaped brackets and protrudes from the gripping bolt hole in the other side plate, and is fastened with a nut. An antenna mounting bracket characterized by having a gripping collar fitted around the outer circumference of the gripping bolt between the side plates of the pair of L-shaped brackets, which is gripped by a worker.

4. In the antenna mounting bracket according to claim 3, The antenna mounting bracket is characterized in that the antenna support member is a pole-shaped antenna support member with a circular cross-section.

5. In the antenna mounting bracket according to claim 1, An antenna mounting bracket characterized in that, of the pair of upper and lower telescopic arms, at least the fixed arm constituting the lower telescopic arm is provided with scaffolding on both the left and right sides for the left and right feet of a worker.

6. In the antenna mounting bracket according to claim 5, An antenna mounting bracket characterized in that, of the pair of upper and lower telescopic arms, at least two scaffolding bolt holes penetrating in the left-right direction are provided on both the left and right sides of the fixed arm constituting at least the lower telescopic arm, and scaffolding bolts are provided protruding from the sides of the fixed arm through the two scaffolding bolt holes, respectively, to serve as scaffolding on both the left and right sides.

7. In the antenna mounting bracket according to claim 6, An antenna mounting bracket characterized in that the distance between the tips of the two scaffolding bolts, each provided in the two scaffolding bolt holes of the fixed arm, is greater than the width of the sliding arm.

8. In the antenna mounting bracket according to claim 6, The aforementioned sliding handle is, An antenna mounting bracket characterized in that, even when the movable arm is slid toward the fixed arm to shorten the length of the pair of upper and lower telescopic arms to their maximum extent, the length does not exceed the length of the scaffolding bolt.

9. In the antenna mounting bracket according to claim 1, The aforementioned antenna support member includes: On the lower side, there are bolt holes for fixing the movable arms that constitute the lower pair of telescopic arms of the upper and lower pair of telescopic arms, An antenna mounting bracket characterized in that multiple bolt holes are provided at vertical intervals above for fixing the movable arms that constitute the upper pair of telescopic arms of the pair of upper and lower telescopic arms.

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