Antenna lifting mast device

Abstract

The present invention discloses an antenna lifting rod device, including a lifting rod and a driving device. The lifting rod includes a plurality of rod bodies arranged in sequence from bottom to top, wherein the bottommost rod body is a basic rod body, and the remaining rod bodies are respectively driven rod bodies, and each driven rod body constitutes a driven rod group. The driving device includes a driving shaft, a clutch, a driving motor, a roller and an active support belt, and the clutch is used to make the driving shaft transmission connected to the driving motor, or disconnect the transmission connection between the driving shaft and the driving motor. The roller is transmission-connected to the driving shaft, one end of the active support belt is wound around the roller, and the other end is connected to the basic rod body, and at least part of the structure in the middle of the active support belt is supported below the driven rod group. The lifting rod integrates two driving modes, electric and manual, and can coaxially complete electric and manual working modes, realize the diversity of driving forms, and can flexibly select the driving form according to needs, thereby improving the convenience of use.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna equipment, and in particular to an antenna lifting rod equipment. Background Art

[0002] Antenna lifting rod equipment is designed for lifting various wireless communication antennas, lighting lamps, signal lamps, lightning arresters, etc., and is now widely used in communications, flood relief, lightning protection, engineering rescue and other fields. The existing antenna lifting rod is only driven manually, with a single driving form, and cannot be flexibly selected according to needs, which affects the convenience of use.

[0003] Therefore, how to improve the convenience of use is a technical problem that those skilled in the art currently need to solve. Summary of the invention

[0004] In view of this, an object of the present invention is to provide an antenna lifting rod device which is more convenient to use.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An antenna lifting rod device comprises a lifting rod and a driving device; the lifting rod comprises a plurality of rod bodies arranged in sequence from bottom to top, wherein the rod body at the bottom is a basic rod body, and the remaining rod bodies are respectively driven rod bodies, and each of the driven rod bodies constitutes a driven rod group;

[0007] The driving device comprises a driving shaft, a clutch, a driving motor, a roller and an active supporting belt, wherein the clutch is used to connect the driving shaft to the driving motor or disconnect the driving shaft from the driving motor;

[0008] The roller is drivingly connected to the driving shaft, one end of the active support belt is wound around the roller, and the other end is connected to the base rod body, and at least part of the structure in the middle of the active support belt is supported below the driven rod group.

[0009] Preferably, the clutch comprises a clutch block and an input gear, the clutch block can be axially slidably connected to the drive shaft, and the clutch block and the drive shaft rotate synchronously, and a shift block is fixedly arranged on the clutch block; the input gear is transmission-connected to the drive motor; the clutch block can be axially moved to enable the shift block to be inserted into the input gear to achieve the transmission connection between the input gear and the drive shaft, or to enable the shift block to be disengaged from the input gear to disconnect the transmission connection between the input gear and the drive shaft.

[0010] Preferably, the drive shaft is also provided with a one-way brake assembly for preventing the driven rod group from descending.

[0011] Preferably, the one-way brake assembly comprises a pawl and a ratchet, the pawl is rotatably connected to the pawl shaft and an elastic member is arranged between the two;

[0012] When the driving shaft rotates forward to drive the driven rod group to rise, the ratchet teeth on the ratchet wheel can overcome the elastic force of the elastic member to move the pawl and the ratchet wheel rotates forward along with the driving shaft; and when the driving shaft is not subjected to driving force, the pawl can clamp the ratchet teeth on the ratchet wheel to prevent the driving shaft from rotating in the opposite direction.

[0013] Preferably, a retaining ring is fixedly arranged on the driving shaft, and the ratchet is loosely mounted on the driving shaft; the one-way brake assembly also includes a first friction plate and a second friction plate which are mounted on the driving shaft and are respectively located on both sides of the ratchet; the one-way brake assembly also includes an adjusting nut assembly threadedly connected to the driving shaft, and the adjusting nut assembly and the retaining ring axially clamp the first friction plate, the ratchet and the second friction plate.

[0014] Preferably, the driven rod group includes at least two driven rod bodies;

[0015] The rod body is a groove structure with an opening at the top, and between two adjacent rod bodies, the rod body of the upper layer extends into the groove of the rod body of the lower layer;

[0016] Between every two adjacent layers of the driven rod bodies, a driven support belt is arranged in the driven rod body of the lower layer to prop up the driven rod body of the upper layer.

[0017] Preferably, between every three adjacent layers of the rod bodies, both ends of the driven support belt are connected to the rod bodies of the bottom layer, and the middle portion extends into the rod bodies of the middle layer to support the rod bodies of the upper layer upwards.

[0018] Preferably, the active support belt is supported between the base rod body and the bottom layer of the driven rod body through rollers; between adjacent driven rod bodies, the driven support belts are respectively supported by corresponding rollers on the driven rod bodies.

[0019] Preferably, the width directions of the driven support belts in adjacent layers are perpendicular to each other; and the width directions of the driven support belt in the bottom layer are perpendicular to the width directions of the active support belt.

[0020] Preferably, it also includes a gear box, the drive shaft is rotatably connected to the gear box, and the gear box is rotatably connected to the first transmission shaft, the second transmission shaft and the roller, the axial direction of the drive shaft is parallel to the axial direction of the first transmission shaft, the axial direction of the second transmission shaft and the roller is parallel, and the axial direction of the drive shaft is perpendicular to the axial direction of the roller; the drive shaft is connected to the first transmission shaft through a spur gear structure, the first transmission shaft is connected to the second transmission shaft through a helical gear structure, and the second transmission shaft is connected to the roller through a spur gear structure.

[0021] The antenna lifting rod device provided by the present invention includes a lifting rod and a driving device. The lifting rod includes a plurality of rod bodies arranged in sequence from bottom to top, wherein the bottommost rod body is a basic rod body, and the remaining rod bodies are respectively driven rod bodies, and each driven rod body constitutes a driven rod group. The driving device includes a driving shaft, a clutch, a driving motor, a roller and an active support belt, and the clutch is used to make the driving shaft transmission connected to the driving motor, or disconnect the transmission connection between the driving shaft and the driving motor. The roller is transmission-connected to the driving shaft, one end of the active support belt is wound around the roller, and the other end is connected to the basic rod body, and at least part of the structure in the middle of the active support belt is supported below the driven rod group.

[0022] In the antenna lifting rod device, the unfolded length of the active support belt can be adjusted by rotating the roller, so that the top height of the driven rod group can be adjusted to achieve the adjustment of the overall height of the lifting rod. In addition, the roller is driven by the drive shaft, and through the setting of the clutch, the drive shaft can be connected to the drive motor, so that the drive shaft can rotate under electric control, or the drive shaft can be separated from the drive motor, so that the drive shaft can rotate under manual drive. The lifting rod integrates electric and manual driving modes, and can coaxially complete electric and manual working modes, realizing the diversity of driving forms. The driving form can be flexibly selected according to needs to improve the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 This is an appearance diagram of a specific embodiment 1 of the antenna lifting mast device provided by the present invention;

[0025] Figure 2 A cross-sectional view of a first-direction lifting rod in a first specific embodiment of the antenna lifting rod device provided by the present invention;

[0026] Figure 3 for Figure 2 Section view in AA direction;

[0027] Figure 4 It is a principle diagram of the second rod body rising relative to the first rod body in the specific embodiment 1 of the antenna lifting rod device provided by the present invention;

[0028] Figure 5 It is a principle diagram of the third rod body rising relative to the second rod body in the specific embodiment 1 of the antenna lifting rod device provided by the present invention;

[0029] Figure 6 A connection structure diagram of a lifting rod and a gear box in a specific embodiment 1 of the antenna lifting rod device provided by the present invention;

[0030] Figure 7 It is a structural diagram of the driving shaft part in the specific embodiment 1 of the antenna lifting rod device provided by the present invention;

[0031] Figure 8 It is a structural diagram of the locked state of the pawl and the ratchet wheel in the first specific embodiment of the antenna lifting rod device provided by the present invention;

[0032] Fig. 9 This is a structural diagram of the unlocked state of the pawl and the ratchet in the first specific embodiment of the antenna lifting rod device provided by the present invention.

[0033] Reference numerals:

[0034] Handheld lifting controller 1;

[0035] Drive shaft 2, retaining ring 21, first friction plate 22, ratchet 23, second friction plate 24, washer 25, manual lifting connection nut 26, locking nut 27, pawl 28, pawl shaft 29, torsion spring 210, input gear 211, bearing 212;

[0036] Gear box 3, first transmission shaft 31, second transmission shaft 32, third transmission shaft 33, roller 35, clutch block 36, shift block 37, first bevel gear 38, first spur gear 39, second spur gear 310, third spur gear 311, fourth spur gear 312, fifth spur gear 313, third bevel gear 314, fourth bevel gear 315, clutch handle 316;

[0037] Driving motor 4;

[0038] Lifting rod 5, first rod body 51, second rod body 52, third rod body 53, fourth rod body 54, fifth rod body 55, sixth rod body 56, seventh rod body 57, base rod body 58, driven rod body 59, electric limiting device 510, mechanical limiting device 511;

[0039] Active support belt 7, main belt upper roller 71, main belt lower roller 72, main belt lead-out roller 73;

[0040] A driven support belt 8, an upper belt roller 81, and a lower belt roller 82;

[0041] Electric control box 9;

[0042] One-way brake assembly 10. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The core of the present invention is to provide an antenna lifting rod device, which is more convenient to use.

[0045] For a specific embodiment of the antenna lifting rod device provided by the present invention, please refer to Figures 1 to 9 , including a lifting rod 5 and a driving device.

[0046] The lifting rod 5 includes a plurality of rod bodies arranged in sequence from bottom to top, wherein the bottommost rod body is a basic rod body 58, and the remaining rod bodies are driven rod bodies 59. There may be one driven rod body 59 or at least two driven rod bodies 59, and each driven rod body 59 constitutes a driven rod group. Specifically, the top of the driven rod group protrudes above the basic rod body 58, and when the height of the driven rod group above the basic rod body 58 changes, the height of the lifting rod 5 will also change adaptively. Wherein, according to needs, the rod body can be made of round aluminum alloy or carbon fiber tube.

[0047] The driving device includes a driving shaft 2, a clutch, a driving motor 4, a roller 35 and an active support belt 7. The clutch is used to connect the driving shaft 2 to the driving motor 4 so that the driving shaft 2 can be electrically driven by the driving motor 4. The clutch is also used to disconnect the driving connection between the driving shaft 2 and the driving motor 4 so as to disconnect the driving shaft 2 of the driving motor 4 by manual drive. Among them, one of the two components in the driving connection can act as an active component to drive the other to move.

[0048] The roller 35 is connected to the driving shaft 2 in a transmission manner, one end of the active support belt 7 is wound around the roller 35, and the other end is connected to the base rod body 58, and at least part of the structure in the middle of the active support belt 7 is supported below the driven rod group. When the driving shaft 2 drives the roller 35 to rotate, the driven rod group can be raised by continuously winding the active support belt 7 and reducing the unfolded length of the active support belt 7, or the active support belt 7 can be continuously released and the unfolded length of the active support belt 7 can be increased to lower the driven rod group.

[0049] In this embodiment, by rotating the roller 35, the unfolded length of the active support belt 7 can be adjusted, so that the top height of the driven rod group can be adjusted to achieve the adjustment of the overall height of the lifting rod 5. In addition, the roller 35 is driven by the drive shaft 2. Through the setting of the clutch, the drive shaft 2 can be connected to the drive motor 4, so that the drive shaft 2 can rotate under electric control, or the drive shaft 2 can be separated from the drive motor 4, so that the drive shaft 2 can rotate under manual drive. The lifting rod 5 integrates electric and manual driving modes, and can coaxially complete electric and manual working modes, realizing the diversity of driving forms. The driving form can be flexibly selected according to needs to improve the convenience of use.

[0050] Furthermore, if Figure 6 and Figure 7 As shown, the clutch includes a clutch block 36 and an input gear 211. The clutch block 36 can be axially slidably connected to the drive shaft 2, and the clutch block 36 and the drive shaft 2 keep synchronous rotation. Specifically, the drive shaft 2 is a spline shaft, the drive shaft 2 is provided with a clutch external spline, the clutch block 36 is provided with a clutch internal spline, and the clutch internal spline is plugged and matched with the clutch external spline, so that the clutch block 36 and the drive shaft 2 are circumferentially limited and synchronously rotated, and the clutch internal spline and the clutch external spline can slide relative to each other along the axial direction.

[0051] The clutch block 36 is fixedly provided with a shifting block 37 for being connected with the input gear 211 to limit the position in the circumferential direction. The outer peripheral surface of the clutch block 36 is provided with a mounting groove, and the shifting block 37 is fixed in the mounting groove.

[0052] The input gear 211 is connected to the drive motor 4 in a transmission manner, that is, when the drive motor 4 is running, it can always drive the input gear 211. Specifically, the input gear 211 is rotatably connected to the drive shaft 2, so that the input gear 211 cannot directly drive the drive shaft 2, but needs to drive the drive shaft 2 with the help of a clutch. The input gear 211 is specifically connected to the optical axis end of the drive shaft 2 through a bearing 212, and the axial position of the input gear 211 on the drive shaft 2 remains unchanged. In addition, the input gear 211 is a bevel gear, which is meshed with the gear on the output shaft of the drive motor 4 for transmission.

[0053] The clutch block 36 moves axially in one direction, corresponding to Figure 7 When the shift block 37 is moved to the left, the shift block 37 can be inserted into the input gear 211 to realize the transmission connection between the input gear 211 and the drive shaft 2. At this time, the shift block 37 is connected to the input gear 211. If the drive motor 4 is running, the drive motor 4 drives the input gear 211, and the input gear 211 drives the clutch block 36 and the drive shaft 2.

[0054] The clutch block 36 moves axially in the other direction, corresponding to Figure 7When the clutch is shifted to the right, the shift block 37 can be disengaged from the input gear 211 to disconnect the transmission connection between the input gear 211 and the drive shaft 2. At this time, the shift block 37 is not connected to the input gear 211. If the drive motor 4 is running, the drive motor 4 drives the input gear 211. However, the transmission connection between the input gear 211 and the drive shaft 2 is disconnected, and the input gear 211 rotates on the drive shaft 2 without driving the drive shaft 2 to rotate synchronously. In this state of the clutch, the drive shaft 2 can be manually driven to manually adjust the height of the lifting rod 5.

[0055] The clutch used in this embodiment has a simple structure and is easy to process and assemble. Of course, in other embodiments, the input gear 211 can also be set to be axially movable, while the axial position of the clutch block 36 remains unchanged, and the connection and disconnection with the clutch block 36 are achieved through the axial movement of the input gear 211; or, the clutch block 36 and the input gear 211 can be driven by friction to rotate synchronously, without the need to set the shift block 37 in this embodiment.

[0056] Furthermore, the drive shaft 2 is also equipped with a one-way brake assembly 10 for preventing the driven rod assembly from descending. When the driven rod assembly is ascending, the driven rod assembly has a tendency to fall due to its own weight and load. The main purpose of the one-way brake assembly 10 is to prevent the driven rod assembly from sliding down, so that it can remain at a set height and self-lock to stop moving down.

[0057] Furthermore, if Figures 7 to 9 As shown, the one-way brake assembly 10 includes a pawl 28 and a ratchet 23. The pawl 28 is rotatably connected to a pawl shaft 29 and an elastic member is arranged between the pawl 28 and the ratchet shaft 29, specifically a torsion spring 210 arranged on the pawl shaft 29.

[0058] The cooperation between the pawl 28 and the ratchet wheel 23 is used to balance the gravity and deadweight of the driven rod assembly, so that when the driving shaft 2 is not subjected to the driving force, the height of the driven rod assembly remains unchanged.

[0059] When the driving shaft 2 rotates in the positive direction to drive the driven rod group to rise, Fig. 9 As shown, the ratchet teeth on the ratchet wheel 23 can overcome the elastic force of the elastic member to move the pawl 28 and the ratchet wheel 23 rotates in the positive direction along with the drive shaft 2; when the drive shaft 2 is not driven, as shown in FIG. Figure 8 As shown, the pawl 28 can catch the ratchet teeth on the ratchet wheel 23 to prevent the drive shaft 2 from rotating in the reverse direction.

[0060] In this embodiment, through the cooperation between the pawl 28 and the ratchet 23 on the driving shaft 2, one-way braking can be achieved when the driven rod assembly rises, and the structure is simple and easy to assemble.

[0061] Furthermore, if Figure 7As shown, a retaining ring 21 is fixedly arranged on the driving shaft 2, and the ratchet 23 is loosely sleeved on the driving shaft 2. The one-way brake assembly 10 also includes a first friction plate 22 and a second friction plate 24 sleeved on the driving shaft 2 and located on both sides of the ratchet 23. The one-way brake assembly 10 also includes an adjusting nut assembly threadedly connected to the driving shaft 2. The adjusting nut assembly and the retaining ring 21 clamp the first friction plate 22, the ratchet 23 and the second friction plate 24 in the axial direction, and can lock the ratchet 23 to the driving shaft 2.

[0062] Specifically, the adjusting nut assembly includes a manual lifting connection nut 26 and a locking nut 27 that are threadedly connected to the drive shaft 2 in sequence along the axial direction to ensure the locking force. On the drive shaft 2, the first friction plate 22, the ratchet 23, the second friction plate 24, the washer 25, the washer 25, the manual lifting connection nut 26 and the locking nut 27 are sequentially arranged along the axial direction. The adjusting nut assembly applies axial pressure to the components between it and the retaining ring 21 in the axial direction, so that the first friction plate 22, the ratchet 23, the second friction plate 24, the washer 25 and the drive shaft 2 form a whole.

[0063] In this embodiment, the ratchet 23 is positioned circumferentially with the drive shaft 2 by the friction force of the first friction plate 22 and the second friction plate 24, rather than being directly fixed on the drive shaft 2. By rotating the adjustment nut assembly, the axial tightening force of the friction plate on the ratchet 23 can be adjusted, and the friction force is changed accordingly. When the first friction plate 22 and the second friction plate 24 rotate, the relative movement displacement with the ratchet 23 also changes accordingly, which can adaptably provide friction resistance for the ratchet 23, so that the lifting rod can be smoothly raised and lowered.

[0064] Specifically, the friction force of the first friction plate 22 and the second friction plate 24 on the ratchet 23 is greater than the deadweight and load of the driven rod group. When the drive shaft 2 is not subjected to external force, the drive shaft 2 remains stationary along with the ratchet 23. After the drive shaft 2 is subjected to a suitable driving force corresponding to the descending direction of the driven rod group, the first friction plate 22 and the second friction plate 24 overcome the friction force between themselves and the ratchet 23, and the ratchet 23 is stuck by the pawl 28, while the drive shaft 2, the first friction plate 22, and the second friction plate 24 rotate synchronously, and the driven rod group can smoothly descend and reset.

[0065] Of course, in other embodiments, the ratchet 23 may also be integrally fixed to the drive shaft 2. By setting the pawl shaft 29 to be movable, the pawl 28 can be moved close to the ratchet 23 as needed to enable one-way braking, or moved away from the ratchet 23 so that the rotation of the drive shaft 2 is not affected by the ratchet 23 and the pawl 28.

[0066] Furthermore, if Figures 2 to 5As shown, the driven rod group includes at least two driven rod bodies 59. In this embodiment, six driven rod bodies 59 are provided. Specifically, the base rod body 58 is called the first rod body 51, and the driven rod bodies 59 are called the second rod body 52 to the seventh rod body 57 from bottom to top.

[0067] The rod body is a groove structure with an opening at the top, and between two adjacent rod bodies, the upper rod body extends into the groove of the lower rod body. The overall height of the lifting rod 5 can be adjusted by adjusting the height between adjacent rod bodies and the height of the upper rod body extending beyond the upper rod body.

[0068] Among them, between each two adjacent layers of driven rod bodies 59, a driven support belt 8 is arranged in the driven rod body 59 of the lower layer to prop up the driven rod body 59 of the upper layer. In other words, from the second rod body 52 to the sixth rod body 56, a driven support belt 8 is inserted into the interior of each rod body to support the rod body of the adjacent upper layer. The arrangement of the driven support belt 8 facilitates the adjustment of the height of the lifting rod 5. The height of the rod body supported by the driven support belt 8 can be adjusted by simply adjusting the length of the driven support belt 8 inserted into the corresponding rod body.

[0069] Among them, the active support belt 7 and the driven support belt 8 are both webbings. In addition, the webbing can be installed on the corresponding rod body in a built-in, external or mixed manner according to the assembly method between the rod bodies.

[0070] In addition, between each two adjacent layers of rod bodies, a guide rib extending in the height direction is provided on the inner wall of the lower layer of rod bodies, and a guide structure corresponding to the guide rib is provided on the outer wall of the upper layer of rod bodies, such as a guide groove, so that the lifting and lowering of the upper layer of rod bodies can be guided in the height direction through the cooperation of the guide rib and the guide structure. In addition, in the rod body, its inner support belt can be sandwiched between the two guide ribs in the belt width direction, so that the guide rib also has the function of webbing guidance, which can avoid problems such as webbing knotting and mutual entanglement.

[0071] In addition, a lifting range limiting structure may be provided between the first rod body 51 and the second rod body 52, for example Figure 1In the embodiment, a mechanical limit device 511 and an electric limit device 510 are provided on the first rod body 51. The mechanical limit device 511 can be a limit rod inserted in the first rod body 51, and a limit groove can be provided on the second rod body 52. ​​One end of the limit rod can be slidably inserted in the limit groove. After the second rod body 52 rises to the bottom of the limit groove and abuts against the limit rod, it cannot continue to rise, and the highest limit position of the second rod body 52 is limited. The electric limit device 510 can be a Hall element, a photoelectric sensor or other device, and can be more specifically electrically connected to the drive motor 4. When the second rod body 52 drops to its bottom and is detected by the electric limit device 510, the electric limit device 510 provides a signal to the drive motor 4 to stop running, so as to prevent the second rod body 52 from further falling, and the lowest limit position of the second rod body 52 is limited, thereby improving the automation and safety of the equipment operation.

[0072] Furthermore, between each three adjacent layers of rods, the middle of the driven support belt 8 extends into the rod of the middle layer to support the rod of the upper layer upward; the two ends extend from the top opening of the middle rod and are fixed to the rod of the bottom layer. Figure 3 For the adjacent first rod 51, second rod 52 and third rod 53, the two ends of the driven support belt 8 in the second rod 52 extend from the top opening of the second rod 52 and are respectively connected to the first rod 51, and are specifically fixed to the top opening edge of the first rod 51; Figure 2 Between the adjacent second rod body 52, third rod body 53 and fourth rod body 54, the two ends of the driven support belt 8 in the third rod body 53 extend out from the top opening of the third rod body 53 and are respectively connected to the second rod body 52, and are specifically fixed to the top opening edge of the second rod body 52; the setting method of the driven support belt 8 between the remaining three adjacent layers of rod bodies is the same as the driven support belt 8 in the second rod body 52, and will not be repeated.

[0073] In this embodiment, by setting the connection method of the driven support belt 8 between the three layers of rod bodies, while the active support belt 7 drives the bottom layer of driven rod body 59 to move upward, each driven support belt 8 can be linked to synchronously drive the corresponding rod body to move upward to achieve overall adjustment of the lifting rod 5.

[0074] The working principle of the driven support belt 8 is specifically as follows: Figure 4 In FIG. 5 , the dotted line is the initial position of the second rod 52 before it rises. After the active support belt 7 is pulled out, the length of the active support belt 7 in the first rod 51 becomes shorter, and the second rod 52 rises to a height h1. Figure 5As shown, the dotted line is the initial position of the third rod 53 before it rises. After the second rod 52 rises by h1, since the two ends of the driven support belt 8 in the second rod 52 are fixed on the first rod 51, the position of the first rod 51 remains unchanged, so that the driven support belt 8 partially extends out of the second rod 52, and the third rod 53 rises by h2 relative to the second rod 52; for the fourth rod 54, since the two ends of the driven support belt 8 in the third rod 53 are respectively connected to the second rod 52, and the third rod 53 moves upward relative to the second rod 52, the driven support belt 8 partially extends out of the third rod 53, and accordingly, the fourth rod 54 will rise by h3 in the third rod 53; and so on, the fifth rod 55 to the seventh rod 57 will all rise relative to the corresponding adjacent lower rods, and the lifting rod 5 will rise as a whole.

[0075] Among them, the height of each layer of rods relative to the adjacent lower layer of rods is: Figure 2 and Figure 4 As shown, in the initial state, the vertical height difference between the top opening edge B of the first rod body 51 and the bottom edge K of the second rod body 52 is F. After the active support belt 7 is pulled out to a length of L, the vertical height difference between the top opening edge B of the first rod body 51 and the bottom edge K of the second rod body 52 is E, and the second rod body 52 is lifted h1 = FE. Preferably, in order to facilitate height control, the portion of the active support belt 7 between the top opening edge B of the first rod body 51 and the bottom edge K of the second rod body 52 is parallel to the height direction, and accordingly, L = 2(FE) = 2h1.

[0076] In addition, refer to Figure 3 and Figure 5 In the initial state, the vertical height difference between the top opening edge D of the second rod 52 and the bottom edge M of the third rod 53 is H. After the active support belt 7 is pulled out to a length of L, the vertical height difference between the top opening edge D of the second rod 52 and the bottom edge M of the third rod 53 is G. Relative to the second rod 52, the third rod 53 is lifted by h2=HG. Preferably, in order to facilitate height control, the active support belt 7 between the top opening edge of the first rod 51 and the top opening edge of the second rod 52 is parallel to the height direction, then h2=h1=L / 2. The driven support belts 8 corresponding to the fourth rod 54 to the seventh rod 57 are all set with reference to the driven support belt 8 between the second rod 52 and the third rod 53, so that each driven rod 59 is lifted by L / 2 relative to its adjacent lower rod. Then, taking the base rod 58 as the reference height, the total lifting height of the top of the lifting rod 5 is (n-1)×L / 2, where n is the total number of rods.

[0077] Furthermore, the active support belt 7 is supported by rollers between the first rod 51 and the second rod 52. Between adjacent driven rods 59, the driven support belt 8 is supported by corresponding rollers on the driven rods 59 respectively.

[0078] For the driven support belt 8, between every two adjacent layers of driven rod bodies, upper belt rollers 81 are respectively arranged at the two opposite edges of the top opening of the lower layer of the rod body, and lower belt rollers 82 are respectively arranged at the two opposite edges of the bottom outer surface of the upper layer of the rod body. The axes of the upper belt roller 81 and the lower belt roller 82 are parallel, and the driven support belt 8 passes around one upper belt roller 81, two lower belt rollers 82 and another upper belt roller 81 in sequence.

[0079] For the active support belt 7, the bottom surface of the bottom driven rod body 59 is provided with a main belt lower roller 72, the two opposite edges of the top of the base rod body 58 are respectively provided with main belt upper rollers 71 and the bottom is provided with a main belt lead-out roller 73, one end of the active support belt 7 is fixed to the main belt upper roller 71 at one edge of the top of the base rod body 58, and the other end passes through each main belt lower roller 72, the main belt upper roller 71 on the other edge of the base rod body 58 and the main belt lead-out roller 73 in sequence, and then extends out from the bottom opening of the base rod body 58 and is connected to the drum 35. The main belt upper roller 71 is axially parallel to the main belt lower roller 72.

[0080] In this embodiment, the friction between the adjacent rods and the support belt can be reduced by installing the rollers. More preferably, the rollers can be installed on the rods via rolling bearings 212.

[0081] Furthermore, the bandwidth directions of adjacent driven support belts 8 are perpendicular to each other, and the bandwidth direction of the bottom driven support belt 8 is perpendicular to the bandwidth direction of the active support belt 7. Specifically, the driven support belt 8 and the active support belt 7 are rectangular structures, and the two ends of the driven support belt 8 in the length direction are respectively connected to the corresponding rods, one end of the active support belt 7 in the length direction is connected to the first rod 51, and the other end is connected to the roller 35, and the length direction of the support belt is perpendicular to the bandwidth direction. In addition, the bandwidth direction is parallel to the axial direction of the roller 35 supporting the same support belt. By staggering the support belts, the smoothness of the movement of each support belt can be improved.

[0082] Furthermore, if Figure 6 As shown, the antenna lifting mast device also includes a gear box 3, the drive shaft 2 is rotatably connected to the gear box 3, and the gear box 3 is rotatably connected to the first transmission shaft 31, the second transmission shaft 32 and the roller 35. The axial directions of the drive shaft 2 and the first transmission shaft 31 are parallel, the axial directions of the second transmission shaft 32 and the roller 35 are parallel, and the axial direction of the drive shaft 2 is perpendicular to the axial direction of the roller 35. The drive shaft 2 is connected to the first transmission shaft 31 through a spur gear structure, the first transmission shaft 31 is connected to the second transmission shaft 32 through a helical gear structure, and the second transmission shaft 32 is connected to the roller 35 through a spur gear structure.

[0083] Since the drive shaft 2 is arranged in the gear box 3, the clutch block 36 and the input gear 211 on the drive shaft 2 are correspondingly arranged in the gear box 3. The axial movement of the clutch block 36 can be manually controlled. Specifically, a clutch handle 316 is fixedly arranged on the clutch block 36, and the clutch handle 316 extends out of the gear box 3, so that the user can change the axial position of the clutch block 36 by driving the clutch handle 316 from outside the gear box 3.

[0084] Among them, a first bevel gear 38 is set on the output shaft of the driving motor 4, and the input gear 211 is meshed with the first bevel gear 38. The axial direction of the output shaft is perpendicular to the axial direction of the driving shaft 2 and extends in the up and down direction. The vertical rotation of the output shaft of the driving motor 4 is converted into the horizontal rotation of the driving shaft 2 through the reversing of the bevel gear structure. At the same time, the output torque is reduced and increased by means of gear transmission.

[0085] A first spur gear 39 is disposed on the driving shaft 2, and a second spur gear 310 meshing with the first spur gear 39 is disposed on the first transmission shaft 31. The second deceleration and increased output torque can be achieved through gear transmission.

[0086] Among them, a third transmission shaft 33 is also arranged between the drum 35 and the second transmission shaft 32, the axial direction of the third transmission shaft 33 is parallel to the axial direction of the drum 35, a third bevel gear 314 is arranged on the first transmission shaft 31, a fourth bevel gear 315 and a third spur gear 311 are arranged on the second transmission shaft 32, a fourth spur gear 312 is arranged on the third transmission shaft 33, and a fifth spur gear 313 is arranged on the drum 35. The third bevel gear 314 and the fourth bevel gear 315 are meshed and matched, and the fourth spur gear 312 is respectively meshed and matched with the third spur gear 311 and the fifth spur gear 313, so as to realize the transmission between the first transmission shaft 31 and the drum 35, and complete the third deceleration and increase the torque. Specifically, when the drum 35 is driven to rotate forward, the active support belt 7 is wound along the drum 35, so that the active support belt 7 is pulled out from the base rod body 58 to realize the rise of the driven rod group; on the contrary, when the drum 35 is driven to rotate reversely, the active support belt 7 is withdrawn along the drum 35, and the driven rod group is lowered.

[0087] The gear and the corresponding shaft structure can be connected in a selected manner as required. The first spur gear 39 is connected to the driving shaft 2 via a flat key, and the fifth spur gear 313 is riveted onto the roller 35 .

[0088] In addition, if Figure 1 As shown, the antenna lifting mast device also includes an electric control box 9, and the drive motor 4 can be specifically arranged in the electric control box 9. In addition, the electric control box 9 can also be electrically connected to the handheld lifting controller 1 to control the opening and closing of the drive motor 4 and the like.

[0089] The antenna lifting rod device in this embodiment works as follows:

[0090] 1. Electric lifting, the input gear 211 is connected to the drive shaft 2 through the clutch transmission, and at the same time, the adjusting nut assembly is turned to adjust the friction force on the ratchet 23, so that the drive shaft 2 can be reversed under the action of the drive motor 4 and the deadweight of the driven rod group, but cannot be reversed and lowered only under the deadweight of the driven rod group:

[0091] Ascending: the driving motor 4 drives the driving shaft 2 to rotate in the forward direction, the roller 35 rotates in the forward direction, the active support belt 7 is pulled out of the base rod body 58, and each driven rod body 59 rises. During the rotation of the driving shaft 2, the ratchet 23 rotates forward relative to the pawl 28, and the ratchet teeth on the ratchet 23 can overcome the elastic force of the elastic member to push the pawl 28 open, and the ratchet 23 will not be locked by the pawl 28. When the ascension is in place, the driving motor 4 stops running, and the pawl 28 is stuck between two adjacent ratchet teeth on the ratchet 23, preventing the driving shaft 2 from reversing and preventing the driven rod body 59 from moving down, so as to achieve the self-locking position of the lifting rod height.

[0092] Descending: The ratchet 23 is stuck by the pawl 28 and stops rotating, the driving motor 4 drives the driving shaft 2, and the driving motor 4 and the driven rod group can overcome the friction between the ratchet 23 and the first friction plate 22 and the second friction plate 24 and rotate in the opposite direction, the active support belt 7 is continuously separated from the roller 35, and the driven rod group moves downward. When it moves downward to the right position, the driving motor 4 stops running, the deadweight of the driven rod group cannot overcome the friction between the ratchet and the first friction plate 22 and the second friction plate 24, and the driving shaft 2 stops rotating with the ratchet, achieving self-locking.

[0093] 2. Manual lifting: There is no transmission relationship between the input gear 211 and the drive shaft 2:

[0094] Manually rotate the drive shaft 2 forward to raise the driven rod group; manually reverse the drive shaft 2 to lower the driven rod group.

[0095] The antenna lifting rod device provided in this embodiment uses rollers and webbing to lift each layer of the lifting rod 5. The driving method is electric / manual in one, and a friction self-locking device is provided to ensure that the lifting rod 5 will not slide down when it stops at any position.

[0096] It should be noted that when an element is said to be "fixed" to another element, it may be directly on the other element or there may be an intermediate element. When an element is said to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0097] The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., ordinal numbers are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0098] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0099] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0100] The antenna lifting pole device provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An antenna lifting mast device, characterized in that: It comprises a lifting rod (5) and a driving device; the lifting rod (5) comprises a plurality of rod bodies arranged in sequence from bottom to top, wherein the rod body at the bottom is a base rod body (58), and the remaining rod bodies are respectively driven rod bodies (59), and each driven rod body (59) constitutes a driven rod group; The driving device comprises a driving shaft (2), a clutch, a driving motor (4), a roller (35) and an active supporting belt (7); the clutch is used to enable the driving shaft (2) to be transmission-connected to the driving motor (4), or to disconnect the driving shaft (2) from the driving motor (4); The roller (35) is drivingly connected to the drive shaft (2), one end of the active support belt (7) is wound around the roller (35), and the other end is connected to the base rod body (58), and at least part of the structure in the middle of the active support belt (7) is supported below the driven rod group; The clutch comprises a clutch block (36) and an input gear (211); the clutch block (36) is axially slidably connected to the drive shaft (2), and the clutch block (36) and the drive shaft (2) rotate synchronously; a shift block (37) is fixedly arranged on the clutch block (36); the input gear (211) is transmission-connected to the drive motor (4); the clutch block (36) can be axially moved to enable the shift block (37) to be plugged into the input gear (211) to achieve transmission connection between the input gear (211) and the drive shaft (2), or to enable the shift block (37) to be disengaged from the input gear (211) to disconnect the transmission connection between the input gear (211) and the drive shaft (2); The drive shaft (2) is also provided with a one-way brake assembly (10) for preventing the driven rod assembly from descending; The one-way brake assembly (10) comprises a pawl (28) and a ratchet wheel (23), wherein the pawl (28) is rotatably connected to a pawl shaft (29) and an elastic member is arranged between the pawl and the ratchet wheel. When the driving shaft (2) rotates in the positive direction to drive the driven rod assembly to rise, the ratchet teeth on the ratchet wheel (23) can overcome the elastic force of the elastic member to move the ratchet pawl (28), and the ratchet wheel (23) rotates in the positive direction along with the driving shaft (2); and when the driving shaft (2) is not subjected to a driving force, the ratchet pawl (28) can clamp the ratchet teeth on the ratchet wheel (23) to prevent the driving shaft (2) from rotating in the reverse direction; A retaining ring (21) is fixedly arranged on the driving shaft (2), and the ratchet (23) is loosely sleeved on the driving shaft (2); the one-way brake assembly (10) further comprises a first friction plate (22) and a second friction plate (24) sleeved on the driving shaft (2) and respectively located on both sides of the ratchet (23); the one-way brake assembly (10) further comprises an adjusting nut assembly threadedly connected to the driving shaft (2), and the adjusting nut assembly and the retaining ring (21) axially clamp the first friction plate (22), the ratchet (23) and the second friction plate (24).

2. The antenna lifting mast device according to claim 1, characterized in that: The driven rod group comprises at least two driven rod bodies (59); The rod body is a groove structure with an opening at the top, and between two adjacent rod bodies, the rod body of the upper layer extends into the groove of the rod body of the lower layer; Between each two adjacent layers of the driven rod bodies (59), a driven support belt (8) is provided in the driven rod bodies (59) of the lower layer to prop up the driven rod bodies (59) of the upper layer.

3. The antenna lifting mast device according to claim 2, characterized in that: Between each three adjacent layers of the rod bodies, both ends of the driven support belt (8) are connected to the rod bodies of the bottom layer, and the middle portion extends into the rod bodies of the middle layer to support the rod bodies of the upper layer upwards.

4. The antenna lifting mast device according to claim 3, characterized in that: The active support belt (7) is supported between the base rod body (58) and the bottommost driven rod body (59) via rollers; between adjacent driven rod bodies (59), the driven support belt (8) is supported respectively via corresponding rollers on the driven rod bodies (59).

5. The antenna lifting mast device according to claim 3, characterized in that: The width directions of the driven support belts (8) in adjacent layers are perpendicular to each other; the width directions of the driven support belt (8) in the bottom layer are perpendicular to the width directions of the active support belt (7).

6. The antenna lifting mast device according to claim 1, characterized in that: The invention also comprises a gear box (3), wherein the drive shaft (2) is rotatably connected to the gear box (3), and the gear box (3) is rotatably connected to a first transmission shaft (31), a second transmission shaft (32) and the roller (35), wherein the axial directions of the drive shaft (2) and the first transmission shaft (31) are parallel, the axial directions of the second transmission shaft (32) and the roller (35) are parallel, and the axial direction of the drive shaft (2) is perpendicular to the axial direction of the roller (35); the drive shaft (2) is connected to the first transmission shaft (31) via a spur gear structure, the first transmission shaft (31) is connected to the second transmission shaft (32) via a helical gear structure, and the second transmission shaft (32) is connected to the roller (35) via a spur gear structure.

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