Base station antenna installation adjusting device

Abstract

The invention relates to a base station antenna mounting and adjusting device. The base station antenna installation adjusting device comprises a fixed installation assembly, a lifting mechanism, a deflection mechanism and an inclination angle mechanism. The lifting mechanism is arranged on the fixed mounting assembly and comprises a lifting mounting part and a lifting driving part, and the lifting driving part is used for driving the lifting mounting part to move in the lifting direction; the deflection mechanism is arranged on the lifting mounting part and comprises a deflection mounting part and a deflection driving part, and the deflection driving part is used for driving the deflection mounting part to rotate around a deflection axis; the inclination angle mechanism is arranged on the deflection mounting part, the inclination angle mechanism comprises an antenna mounting part and a pitching driving part, the antenna mounting part is used for rotatably mounting the base station antenna on the deflection mounting part, and the pitching driving part is used for driving the base station antenna to rotate. According to the base station antenna installation and adjustment device, automatic adjustment of the height, the azimuth angle and the inclination angle of the base station antenna is achieved, the installation and adjustment process is simple, the efficiency is high, and the operation safety risk is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of communication base stations, and in particular to a base station antenna installation and adjustment device. Background Art

[0002] In the related art, base station antennas are usually installed on the tower or pole of the communication base station using two upper and lower mounting brackets, and the antenna tilt angle is adjusted by manually adjusting the two mounting brackets. However, the mounting brackets are usually installed by bolts, and a large number of bolts need to be tightened during the installation process, which is cumbersome and inconvenient to use. When adjusting the antenna tilt angle, the mounting brackets need to be disassembled and then installed and tightened. The adjustment process is cumbersome and requires multiple adjustment tests. The debugging and installation efficiency is low, and the safety risk of high-altitude operations is high, which poses a safety hazard. Summary of the invention

[0003] The purpose of this application is to provide a base station antenna installation and adjustment device, which aims to solve the problems of cumbersome installation and adjustment process of base station antennas, inconvenient use, low debugging and installation efficiency, and high operational safety risks.

[0004] The present application provides a base station antenna installation and adjustment device, comprising:

[0005] Fixed installation components;

[0006] A lifting mechanism is arranged on the fixed installation component, the lifting mechanism comprises a lifting installation member and a lifting driving member, the lifting installation member is connected to the lifting driving member, and the lifting driving member is configured to drive the lifting installation member to move along the lifting direction;

[0007] A deflection mechanism is arranged on the lifting mounting member, the deflection mechanism comprises a deflection mounting member and a deflection driving member, the deflection mounting member is connected to the deflection driving member, the deflection driving member is configured to drive the deflection mounting member to rotate around a deflection axis, and the deflection axis is extended along the lifting direction;

[0008] A tilt mechanism is arranged on the deflection mounting member, and the tilt mechanism includes an antenna mounting member and a pitch driving member. The antenna mounting member is used to rotatably mount the base station antenna on the deflection mounting member, and the pitch driving member is configured to drive the base station antenna to rotate, and the rotation axis of the base station antenna is perpendicular to the deflection axis.

[0009] In some embodiments, the lifting and lowering mounting member includes a first mounting plate, a second mounting plate and a lifting and lowering connecting member vertically connected between the first mounting plate and the second mounting plate, the first mounting plate is provided with a first guide portion surrounding the lifting and lowering connecting member, the second mounting plate is provided with a second guide portion surrounding the lifting and lowering connecting member, and the central axis of the first guide portion and the central axis of the second guide portion are both coaxially arranged with the deflection axis; the deflection mounting member is slidably connected to the first guide portion and the second guide portion.

[0010] In some embodiments, the deflection mechanism further comprises a gear ring, the central axis of the gear ring is coaxially arranged with the deflection axis; the deflection mounting member is connected to the gear ring, and the deflection driving member is drivingly connected to the gear ring.

[0011] In some embodiments, the deflection mechanism includes a plurality of the deflection mounting members, and the plurality of the deflection mounting members are spaced apart in a circumferential direction around the deflection axis.

[0012] In some embodiments, the deflection mechanism includes a plurality of gear rings, which are arranged in sequence along the lifting direction, and each of the deflection mounting members is connected to one of the gear rings; the deflection mechanism also includes a shift gear set, which includes a shift gear shaft and a transmission wheel connected to the shift gear shaft and a plurality of passive gears, the transmission wheel is transmission-connected to the deflection driving member, the shift gear shaft is extended along the lifting direction, and the shift gear shaft can move along the lifting direction to switch the corresponding passive gear to mesh with the gear ring.

[0013] In some embodiments, the antenna mounting component includes a first connecting component, the first connecting component is arranged on the deflection mounting component, and the first connecting component is provided with a first hinge part; the pitch driving component is arranged on the deflection mounting component and is spaced apart from the first connecting component in the lifting direction, and the pitch driving component is provided with a second hinge part; the hinge axis of the first hinge part and the hinge axis of the second hinge part are both perpendicular to the deflection axis, and the first hinge part and the second hinge part are used to rotatably mount the base station antenna.

[0014] In some embodiments, one end of the pitch drive member is hinged to the yaw mounting member, and the other end of the pitch drive member is provided with the second hinged portion; and / or, the antenna mounting member also includes a second connecting member, one end of the second connecting member is hinged to the second hinged portion, and the other end of the second connecting member is provided with a third hinged portion.

[0015] In some embodiments, the antenna mounting component further includes a mounting hinge, the mounting hinge is used to be mounted on the base station antenna, and a fourth hinge portion is disposed on the mounting hinge.

[0016] In some embodiments, the lifting mechanism further includes a lifting guide member, which is fixedly connected to the fixed mounting assembly and extends along the lifting direction; and the lifting mounting member is slidably connected to the lifting guide member.

[0017] In some embodiments, the lifting and lowering mounting member includes a lifting and lowering connecting member and at least one limiting member, wherein the limiting member is connected to the lifting and lowering connecting member, and a limiting guide hole is also provided on the limiting member, and the central axis of the limiting guide hole extends along the lifting direction; the deflection mounting member is rotatably mounted outside the lifting and lowering connecting member, and the central axis of the deflection mounting member is coaxially arranged with the deflection axis.

[0018] The above-mentioned base station antenna installation and adjustment device is used to install the base station antenna to the communication base station; by setting the lifting mechanism, deflection mechanism and tilt mechanism, the height, azimuth and tilt of the base station antenna can be automatically adjusted, and there is no need for manual adjustment, testing, confirmation and other work by manual high-altitude operations. The base station antenna installation and adjustment process is simple and easy to use, which improves the debugging and installation efficiency and reduces the safety risk of operation; by adopting the lifting drive component, the deflection drive component and the pitch drive component, the height, azimuth and tilt of the base station antenna can be linearly adjusted, and the adjustment accuracy is higher. It can be adjusted in place at one time, reducing the number of adjustment operation tests and repeated operations. In addition, the adjustment accuracy is high, and it can be accurately adjusted to the target state, which is conducive to achieving the optimal performance parameters of the base station antenna; and it is conducive to remote adjustment. There is no need for operators to go up the tower during the whole process, and remote control can be performed in the operation room, which greatly reduces the safety hazards and maintenance costs of operation. It is convenient to adjust the height, azimuth and tilt of the base station antenna during use, which can meet the use needs in different scenarios, and is conducive to increasing the signal coverage range of the base station antenna and improving the communication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a base station antenna installation adjustment device according to some embodiments of the present application.

[0021] Figure 2This is a schematic diagram of the structure of the fixed installation assembly and the lifting drive component of some embodiments of the present application.

[0022] Figure 3 This is a schematic diagram of the structure of the lifting and lowering mounting parts, the deflection mechanism and the tilt mechanism of some embodiments of the present application.

[0023] Figure 4 This is a schematic diagram of the structure of the lifting installation component and the deflection mechanism of some embodiments of the present application.

[0024] Figure 5 This is a schematic diagram of the structure of the deflection mechanism of some embodiments of the present application.

[0025] Figure 6 This is a schematic diagram of the structure of the deflection mounting member and the tilt mechanism of some embodiments of the present application.

[0026] Figure 7 This is a schematic diagram of the structure of a mounting hinge installed on a base station antenna in some embodiments of the present application.

[0027] Figure 8 Schematic diagram of the three-dimensional structure of the base station antenna installation and adjustment device according to other embodiments of the present application.

[0028] Fig. 9 This is a front view of a base station antenna installation adjustment device according to some other embodiments of the present application.

[0029] Fig.10 Schematic diagram of the structure of the lifting installation parts, deflection mechanism and tilt mechanism of other embodiments of the present application.

[0030] Fig.11 sectional views of lifting mounts and deflection mechanisms according to other embodiments of the present application.

[0031] Figure Number:

[0032] 100. Base station antenna installation and adjustment device; 200. Base station antenna; 300. Pole;

[0033] 1. Fixed mounting assembly; 11. First mounting substrate; 12. Second mounting substrate;

[0034] 2. Lifting mechanism; 21. Lifting mounting member; 211. First mounting plate; 2111. First guide hole; 212. Second mounting plate; 2121. Second guide hole; 213. Lifting connecting member; 2131. Connecting threaded hole; 214. Second guide portion; 215. Limiting member; 2151. Limiting guide hole; 22. Lifting driving member; 23. Lifting transmission member; 24. Lifting guide member;

[0035] 3. Deflection mechanism; 31. Deflection mounting member; 32. Deflection driving member; 33. Ring gear; 34. Driving wheel; 35. Shift gear set; 351. Shift gear shaft; 352. Transmission wheel; 353. Passive gear; 36. Gear bar;

[0036] 4. Tilt mechanism; 41. Antenna mounting member; 411. First connecting member; 4111. First hinged part; 412. Second connecting member; 4121. Third hinged part; 413. Mounting hinge seat; 4131. Fourth hinged part; 42. Pitch driving member; 421. Second hinged part. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. An element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and are not intended to be the only implementation method.

[0043] See also Figure 1 , Figure 1The schematic diagram of the structure of the base station antenna installation adjustment device in some embodiments of the present application is shown. The base station antenna installation adjustment device 100 provided in the embodiment of the present application includes a fixed installation component 1, a lifting mechanism 2, a deflection mechanism 3 and a tilt mechanism 4; the lifting mechanism 2 is arranged on the fixed installation component 1, and the lifting mechanism 2 includes a lifting installation member 21 and a lifting drive member 22, the lifting installation member 21 is connected to the lifting drive member 22, and the lifting drive member 22 is configured to drive the lifting installation member 21 to move along the lifting direction Z; the deflection mechanism 3 is arranged on the lifting installation member 21, and the deflection mechanism 3 includes a deflection installation member The deflection mounting member 31 and the deflection driving member 32 are connected, and the deflection driving member 32 is configured to drive the deflection mounting member 31 to rotate around the deflection axis O1, and the deflection axis O1 is extended along the lifting direction Z; the tilt mechanism 4 is arranged on the deflection mounting member 31, and the tilt mechanism 4 includes an antenna mounting member 41 and a pitch driving member 42, the antenna mounting member 41 is used to rotatably mount the base station antenna 200 on the deflection mounting member 31, and the pitch driving member 42 is configured to drive the base station antenna 200 to rotate, and the rotation axis of the base station antenna 200 is perpendicular to the deflection axis O1.

[0044] like Figures 1 to 5 As shown in , the Z direction is the lifting direction.

[0045] The base station antenna installation and adjustment device 100 is used to install the base station antenna 200 to the communication base station, and to adjust the height, azimuth and inclination of the base station antenna 200.

[0046] The height of the base station antenna 200 refers to the distance from the base station antenna 200 to the horizontal plane. The azimuth of the base station antenna 200 refers to the deflection angle of the maximum radiation direction of the base station antenna 200 around the axis perpendicular to the horizontal plane; for example, taking the maximum radiation direction of the base station antenna 200 pointing to the due north as a standard, the maximum radiation direction of the base station antenna 200 is adjusted to the east or west by an angle, and this angle is the azimuth of the base station antenna 200, that is, the azimuth when the maximum radiation direction of the base station antenna 200 points to the due north is 0°. The inclination of the base station antenna 200 refers to the angle between the maximum radiation direction of the base station antenna 200 and the horizontal plane; for example, the inclination when the maximum radiation direction of the base station antenna 200 is parallel to the horizontal plane is 0°.

[0047] By adjusting the height, azimuth and inclination of the base station antenna 200, the signal of the adjusted base station antenna 200 can be made more stable and the coverage effect better.

[0048] During installation, the base station antenna 200 is installed on the tilt mechanism 4, the tilt mechanism 4 is installed on the deflection mounting member 31 of the deflection mechanism 3, the deflection mechanism 3 is installed on the lifting mounting member 21 of the lifting mechanism 2, and the lifting mechanism 2 is installed on the fixed installation component 1, so that the base station antenna 200 is installed on the base station antenna installation adjustment device 100. The fixed installation component 1 serves as the installation base of the base station antenna installation adjustment device 100, and is used to fix the base station antenna installation adjustment device 100 as a whole to a high altitude position such as a tower or a pole of a communication base station. The installation posture of the base station antenna installation adjustment device 100 can be adjusted by the fixed installation component 1, so that the lifting direction Z is roughly perpendicular to the horizontal plane; in this way, it is conducive to improving the adjustment effect of the height, azimuth and tilt of the base station antenna 200.

[0049] The lifting installation part 21 can move up and down along the lifting direction Z driven by the lifting drive part 22, driving the deflection mechanism 3 and the tilt mechanism 4 and the base station antenna 200 arranged on the lifting installation part 21 to move up and down along the lifting direction Z, thereby adjusting the height of the base station antenna 200. The lifting drive part 22 is a driving source, which is used to provide driving force for the lifting movement of the lifting installation part 21. Since the lifting drive part 22 is used to drive the lifting installation part 21 to perform lifting movement, the action of the lifting drive part 22 can be controlled by the electronic control program, which is conducive to realizing the linear adjustment of the height of the base station antenna 200. In addition, the data of the height adjustment of the base station antenna 200 can be recorded by software, and the performance parameters of the base station antenna 200 can be synchronously monitored during the adjustment process, which is conducive to adjusting the base station antenna 200 to the optimal state; the data record of the adjustment process is complete and clear, which is convenient for management.

[0050] The deflection mounting member 31 can rotate around the deflection axis O1 under the drive of the deflection driving member 32, driving the tilt mechanism 4 and the base station antenna 200 arranged on the deflection mounting member 31 to rotate around the deflection axis O1, thereby adjusting the azimuth angle of the base station antenna 200. The deflection driving member 32 is also a driving source, which is used to provide a driving force for the deflection movement of the deflection mounting member 31. Since the deflection driving member 32 is used to drive the deflection mounting member 31 to rotate around the deflection axis O1, the action of the deflection driving member 32 can be controlled by the electronic control program, which is conducive to realizing the linear adjustment of the azimuth angle of the base station antenna 200. In addition, the data of the azimuth angle adjustment of the base station antenna 200 can be recorded by software, and the performance parameters of the base station antenna 200 can be synchronously monitored during the adjustment process, which is conducive to adjusting the base station antenna 200 to the optimal state; the data record of the adjustment process is complete and clear, which is convenient for management.

[0051] The base station antenna 200 is rotatably mounted on the deflection mounting member 31 through the antenna mounting member 41, and the rotation axis of the base station antenna 200 is perpendicular to the deflection axis O1, that is, the rotation axis of the base station antenna 200 is roughly parallel to the horizontal plane. The pitch drive member 42 can be directly connected to the base station antenna 200, or it can be indirectly connected to the base station antenna 200 through the antenna mounting member 41, which is not limited here. The base station antenna 200 can rotate around an axis parallel to the horizontal plane under the drive of the pitch drive member 42, thereby realizing the inclination adjustment of the base station antenna 200. The pitch drive member 42 is also a driving source, which is used to provide a driving force for the pitch movement of the base station antenna 200. Since the pitch drive member 42 is used to drive the pitch movement of the base station antenna 200, the action of the pitch drive member 42 can be controlled by an electronic control program, which is conducive to realizing the linear adjustment of the inclination of the base station antenna 200. In addition, the tilt adjustment data of the base station antenna 200 can be recorded by software, and the performance parameters of the base station antenna 200 can be monitored synchronously during the adjustment process, which is conducive to adjusting the base station antenna 200 to the optimal state; the data records of the adjustment process are complete and clear, which is easy to manage.

[0052] After the base station antenna 200 is installed to a high altitude position through the base station antenna installation and adjustment device 100, the height of the base station antenna 200 can be adjusted through the lifting mechanism 2, the azimuth of the base station antenna 200 can be adjusted through the deflection mechanism 3, and the inclination of the base station antenna 200 can be adjusted through the inclination mechanism 4, so that the signal coverage range of the base station antenna 200 meets the on-site usage requirements.

[0053] In some embodiments, the base station antenna installation and adjustment device 100 may further include a communication unit, which may include a wired communication unit or a wireless communication unit. Remote communication may be performed through the communication unit to remotely control the actions of the lifting mechanism 2, the deflection mechanism 3, and the tilt mechanism 4. In this way, remote automatic adjustment of the height, azimuth, and tilt of the base station antenna 200 may be achieved.

[0054] During the use of the base station antenna 200, the lifting mechanism 2 can be remotely controlled to adjust the height of the base station antenna 200, the deflection mechanism 3 can be controlled to adjust the azimuth of the base station antenna 200, and the tilt mechanism 4 can be controlled to adjust the tilt of the base station antenna 200, which is conducive to obtaining ideal performance data of the base station antenna 200, can meet the usage requirements in different scenarios, improve the effectiveness of the adjustment, and is conducive to increasing the signal coverage range of the base station antenna 200, providing higher quality communication effects, and improving convenience of use.

[0055] The base station antenna installation and adjustment device 100 of the embodiment of the present application is used to install the base station antenna 200 to the communication base station; by setting the lifting mechanism 2, the deflection mechanism 3 and the tilt mechanism 4, the height, azimuth and tilt of the base station antenna 200 can be automatically adjusted, and no manual high-altitude operation is required for manual adjustment, testing, confirmation and the like. The installation and adjustment process of the base station antenna 200 is simple and easy to use, which improves the debugging and installation efficiency and reduces the safety risk of the operation; by adopting the lifting drive 22, the deflection drive 32 and the pitch drive 42, the height, azimuth and tilt of the base station antenna 200 can be automatically adjusted. The linear adjustment has higher adjustment accuracy and can be adjusted in place at one time, reducing the number of adjustment operation tests and repeated operations. In addition, the adjustment accuracy is high and it can be accurately adjusted to the target state, which is conducive to achieving the optimal performance parameters of the base station antenna 200. It is also conducive to remote adjustment. There is no need for operators to go up the tower during the whole process, and remote control can be performed in the operation room, which greatly reduces the safety hazards and maintenance costs of the operation. It is convenient to adjust the height, azimuth and inclination of the base station antenna 200 during use, which can meet the use needs in different scenarios, and is conducive to increasing the signal coverage range of the base station antenna 200 and improving the communication effect.

[0056] In some embodiments, the lifting drive member 22 may be a driving source that outputs a rotational motion. For example, the lifting drive member 22 may include but is not limited to a rotary motor, a hydraulic motor, an engine, and the like.

[0057] In some specific embodiments, the lifting drive member 22 may be a motor, and the height adjustment data of the lifting mechanism 2 may be recorded through an encoder of the motor and software.

[0058] See also Figure 1 and Figure 2 The lifting mechanism 2 further includes a lifting transmission member 23, which is extended along the lifting direction Z; the lifting installation member 21 is connected to the lifting transmission member 23. The lifting drive member 22 cooperates with the lifting transmission member 23 to convert the rotational motion output by the lifting drive member 22 into the movement of the lifting installation member 21 along the lifting direction Z.

[0059] In some embodiments, Figure 1 and Figure 2 As shown, the lifting drive member 22 is installed on the fixed installation component 1, and the lifting drive member 22 is connected to the lifting transmission member 23. The lifting drive member 22 drives the lifting transmission member 23 to move along the lifting direction Z or rotate around the axis extending along the lifting direction Z. The lifting transmission member 23 drives the lifting installation member 21 to move along the lifting direction Z.

[0060] In some embodiments, the lifting transmission member 23 can move along the lifting direction Z. For example, the lifting transmission member 23 can include but is not limited to a chain, a conveyor belt, a traction rope, etc.; the lifting installation member 21 is fixedly connected to the chain, conveyor belt or traction rope, and the lifting drive member 22 drives the chain, conveyor belt or traction rope to move along the lifting direction Z, thereby driving the lifting installation member 21 to move along the lifting direction Z. In other embodiments, the lifting transmission member 23 can rotate around an axis extending along the lifting direction Z. For example, the lifting transmission member 23 can include but is not limited to a screw, etc.; the lifting installation member 21 can include a nut, the nut is connected to the screw, and the central axis of the screw extends along the lifting direction Z; the lifting drive member 22 drives the screw to rotate around its central axis, and the nut can move up and down along the screw when the screw rotates, thereby driving the lifting installation member 21 to move along the lifting direction Z.

[0061] In some specific embodiments, one end of the screw is connected to the motor output shaft, and the other axial end of the screw can be connected to the fixed installation assembly 1 through a bearing. This is conducive to improving the rotation stability of the screw.

[0062] In other embodiments, the lifting drive 22 is disposed on the lifting installation 21, and the lifting transmission member 23 is fixedly disposed on the fixed installation assembly 1; the lifting drive 22 drives the lifting installation 21 to move along the lifting transmission member 23, thereby realizing the movement of the lifting installation 21 along the lifting direction Z. For example, the lifting transmission member 23 may include but is not limited to a screw, etc., the screw is fixed differently, and the central axis of the screw extends along the lifting direction Z; the lifting installation 21 may include a nut, the nut is connected to the screw, the lifting drive 22 is disposed on the lifting installation 21 and drives the nut to rotate around the screw, and the nut drives the lifting installation 21 to move along the screw, thereby realizing the movement of the lifting installation 21 along the lifting direction Z.

[0063] It should be noted that, in some embodiments not shown in the figure, the lifting drive member 22 can also be a driving source that outputs linear motion. For example, the lifting drive member 22 can include but is not limited to a hydraulic push rod, an electric push rod, etc., and the lifting installation member 21 is pushed by the hydraulic push rod, the electric push rod, etc., so that the lifting installation member 21 moves along the lifting direction Z. The lifting motion of the lifting installation member 21 can adopt different motion drive forms, and the lifting drive member 22 can adopt different drive sources accordingly. The embodiment of the present application does not limit the specific driving method of the lifting drive member 22.

[0064] In some embodiments, see Figure 1 and Figure 2 The fixed installation assembly 1 may include a first installation substrate 11 and a second installation substrate 12 , and the first installation substrate 11 and the second installation substrate 12 are spaced apart along the lifting direction Z. The lifting transmission member 23 is connected between the first installation substrate 11 and the second installation substrate 12 .

[0065] In some embodiments, see Figure 1 and Figure 2 The lifting mechanism 2 also includes a lifting guide member 24, which is fixedly connected to the fixed installation component 1 and extends along the lifting direction Z; the lifting installation member 21 is slidably connected to the lifting guide member 24.

[0066] In some embodiments, the lifting guide member 24 may be a guide column, which is vertically connected between the first mounting substrate 11 and the second mounting substrate 12. The number of the lifting guide members 24 may be multiple, for example, three; the multiple lifting guide members 24 are arranged at intervals around the lifting transmission member 23. A hole or a sleeve is provided on the lifting mounting member 21 corresponding to the guide column, and the hole or the sleeve is slidably matched with the guide column.

[0067] By setting a lifting guide member 24 that is slidably connected to the lifting installation member 21, the movement of the lifting installation member 21 along the lifting direction Z can be guided and limited to maintain the lifting and lowering movement stability of the lifting installation member 21; and the lifting guide member 24 can suppress the rotation tendency of the lifting installation member 21, which is beneficial to improving the lifting and lowering movement stability of the lifting installation member 21.

[0068] In some embodiments, the deflection drive member 32 may be a driving source for outputting rotational motion, for example, the deflection drive member 32 may include but is not limited to a rotary motor, a hydraulic motor, an engine, etc.; the deflection drive member 32 is connected to the deflection mounting member 31 by transmission, for example, the deflection drive member 32 may include but is not limited to being connected to the deflection mounting member 31 by transmission through a gear set meshing transmission, a pulley transmission, etc., so that the deflection drive member 32 drives the deflection mounting member 31 to rotate around the deflection axis O1. In other embodiments, the deflection drive member 32 may also be a driving source for outputting linear motion, for example, the deflection drive member 32 may include but is not limited to a linear motor, a cylinder, a hydraulic cylinder, etc.; the deflection drive member 32 may be connected to the deflection mounting member 31 by transmission through a connecting rod, a rack, etc., and the deflection mounting member 31 is pushed to rotate around the deflection axis O1 by the deflection drive member 32. The embodiment of the present application does not limit the specific driving method of the deflection drive member 32.

[0069] In some specific embodiments, the deflection driving member 32 may be a motor, and the azimuth angle adjustment data of the deflection mechanism 3 may be recorded through an encoder of the motor and software.

[0070] In some embodiments, see Figure 1 , Figure 3 and Figure 4The lifting installation member 21 includes a first installation plate 211, a second installation plate 212 and a lifting connection member 213 vertically connected between the first installation plate 211 and the second installation plate 212. The first installation plate 211 is provided with a first guide portion (not shown in the figure) surrounding the lifting connection member 213, and the second installation plate 212 is provided with a second guide portion 214 surrounding the lifting connection member 213, and the central axis of the first guide portion and the central axis of the second guide portion 214 are both coaxially arranged with the deflection axis O1; the deflection installation member 31 is slidably connected to the first guide portion and the second guide portion 214.

[0071] The lifting connection member 213 is used for transmission connection with the lifting drive member 22. In some embodiments, the lifting connection member 213 can be a connecting sleeve, and a connecting threaded hole 2131 is provided on the connecting sleeve, and the connecting sleeve is connected to the screw through the connecting threaded hole 2131; the lifting drive member 22 drives the screw to rotate, and the screw drives the connecting sleeve to move along the screw, thereby driving the lifting installation member 21 to move along the lifting direction Z.

[0072] The first mounting plate 211 and the second mounting plate 212 are used to mount the deflection mechanism 3. The deflection driving member 32 can be mounted on the first mounting plate 211 or the second mounting plate 212. The deflection mounting member 31 is slidably connected to the first guide portion and the second guide portion 214, so that the deflection mounting member 31 is slidably arranged on the lifting mounting member 21. Moreover, the first guide portion and the second guide portion 214 limit the trajectory movement of the deflection mounting member 31 along the circumferential direction around the deflection axis O1, thereby realizing the azimuth adjustment of the base station antenna 200.

[0073] In some embodiments, the first guide portion and the second guide portion 214 may be structures such as slide grooves, guide rails or bearings, and the deflection mounting member 31 is slidably connected to the slide grooves, guide rails or bearings, thereby limiting the movement trajectory of the deflection mounting member 31.

[0074] In some embodiments, a first guide hole 2111 is formed on the first mounting plate 211, a second guide hole 2121 is formed on the second mounting plate 212, and the first guide hole 2111 is coaxially arranged with the second guide hole 2121. A guide post is movably arranged in the first guide hole 2111 and the second guide hole 2121 to guide and limit the movement of the lifting mounting member 21 along the lifting direction Z.

[0075] By setting the first guide part and the second guide part 214, the deflection mounting part 31 is limited to move along a motion trajectory in the circumferential direction around the deflection axis O1, which can improve the stability of the deflection mounting part 31 rotating around the deflection axis O1, which is beneficial to improving the stability and accuracy of adjusting the azimuth angle of the base station antenna 200.

[0076] In some embodiments, Figure 3 and Figure 4As shown, the first guide portion is arranged on the side of the first mounting plate 211 facing the second mounting plate 212, and the second guide portion 214 is arranged on the side of the second mounting plate 212 facing the first mounting plate 211; one end of the deflection mounting member 31 is slidably connected to the first guide portion, and the other end of the deflection mounting member 31 is slidably connected to the second guide portion 214.

[0077] In some specific embodiments, the first guide portion and the second guide portion 214 are slide grooves extending in a circumferential direction around the deflection axis O1; the deflection mounting member 31 can be a mounting plate, the upper end of the mounting plate is inserted into the slide groove on the first mounting disk 211, and the lower end of the mounting plate is inserted into the slide groove on the second mounting disk 212, thereby limiting the movement trajectory of the mounting plate around the deflection axis O1.

[0078] In some embodiments, see Figure 1 and Figures 3 to 5 The deflection mechanism 3 further includes a gear ring 33 , the central axis of which is coaxially arranged with the deflection axis O1 ; the deflection mounting member 31 is connected to the gear ring 33 , and the deflection driving member 32 is transmission-connected to the gear ring 33 .

[0079] The teeth of the gear ring 33 may be arranged on the inner ring of the gear ring 33 or on the outer ring of the gear ring 33, and no limitation is made here. The gear ring 33 is driven to rotate around the central axis by the deflection driving member 32, and the gear ring 33 drives the deflection mounting member 31 to rotate around the deflection axis O1, thereby realizing the azimuth adjustment of the base station antenna 200.

[0080] In some embodiments, the deflection mounting member 31 is fixedly connected to the outer ring of the gear ring 33, and the inner ring of the gear ring 33 is provided with a tooth shape. The deflection driving member 32 is provided on the lifting mounting member 21 and is located at the inner ring of the gear ring 33; the deflection mechanism 3 further includes a driving wheel 34, which can be a gear, and the driving wheel 34 is connected to the output end of the deflection driving member 32 and meshed with the gear ring 33. In this way, the structure is more compact, which is conducive to reducing the occupied space of the base station antenna installation and adjustment device 100.

[0081] In some embodiments, see Figure 1 and Figures 3 to 5 The deflection mechanism 3 includes a plurality of deflection mounting members 31 , and the plurality of deflection mounting members 31 are arranged at intervals along a circumferential direction around the deflection axis O1 .

[0082] By setting up multiple deflection mounting parts 31, multiple groups of tilt mechanisms 4 and multiple groups of base station antennas 200 can be installed to achieve azimuth adjustment of multiple groups of base station antennas 200, which can meet the usage requirements in different scenarios, and is conducive to increasing signal coverage and improving communication effects.

[0083] In some embodiments, see Figure 5The deflection mechanism 3 includes a plurality of gear rings 33, which are arranged in sequence along the lifting direction Z, and each deflection mounting member 31 is connected to a gear ring 33; the deflection mechanism 3 also includes a shift gear set 35, the shift gear set 35 includes a shift gear shaft 351 and a transmission wheel 352 connected to the shift gear shaft 351 and a plurality of passive gears 353, the transmission wheel 352 is transmission-connected to the deflection driving member 32, the shift gear shaft 351 is extended along the lifting direction Z, and the shift gear shaft 351 can move along the lifting direction Z to switch the corresponding passive gear 353 to mesh with the gear ring 33.

[0084] In some embodiments, the output end of the deflection driving member 32 may be connected to a driving wheel 34, and the driving wheel 34 and the transmission wheel 352 may be gears, and the driving wheel 34 meshes with the transmission wheel 352; or the driving wheel 34 may be connected to the transmission wheel 352 by a chain or a transmission belt. The deflection driving member 32 drives the driving wheel 34 to rotate, and the driving wheel 34 drives the transmission wheel 352 to rotate.

[0085] The shift gear shaft 351 moves axially, driving multiple passive gears 353 to move along the lifting direction Z, so that one of the passive gears 353 is meshed with its corresponding ring gear 33; at this time, the deflection drive member 32 drives the transmission wheel 352 to rotate, the transmission wheel 352 drives the shift gear shaft 351 to rotate, the shift gear shaft 351 drives the passive gear 353 to rotate, the passive gear 353 drives the meshing ring gear 33 to rotate, and then drives the deflection mounting member 31 connected to the ring gear 33 to rotate around the deflection axis O1, thereby realizing the azimuth adjustment of the base station antenna 200.

[0086] By controlling the shift gear shaft 351 to move axially, the deflection drive member 32 can be switched to drive different ring gears 33 to rotate, thereby switching and adjusting the azimuth angles of different base station antennas 200. Taking the adjustment of two groups of base station antennas 200 as an example, the motor drives the shift gear shaft 351 to rotate, and there are two passive gears 353 on the shift gear shaft 351. By controlling the axial shifting of the shift gear shaft 351, the ring gear 33 can be switched to mesh with the corresponding passive gear 353, so that the azimuth angles of the two groups of base station antennas 200 can be adjusted separately.

[0087] By providing a plurality of gear rings 33 and a shift gear set 35 to form a shift mechanism, the azimuth angles of multiple groups of base station antennas 200 can be adjusted individually. The shift mechanism is easy to use and has a compact structure, which helps to reduce the space occupied by the base station antenna installation and adjustment device 100.

[0088] Of course, in other embodiments, a deflection driving component 32 may be added, that is, a deflection driving component 32 is correspondingly provided for each deflection mounting component 31 , so as to achieve azimuth adjustment of multiple groups of base station antennas 200 .

[0089] In some embodiments, the pitch drive 42 may be a driving source that outputs rotational motion, for example, the pitch drive 42 may include but is not limited to a rotary motor, a hydraulic motor, an engine, etc.; the pitch drive 42 is connected to the base station antenna 200 by transmission, for example, the pitch drive 42 may include but is not limited to being connected to the base station antenna 200 by transmission through a gear set meshing transmission, a pulley transmission, etc., so that the pitch drive 42 drives the base station antenna 200 to pitch and rotate. In other embodiments, the pitch drive 42 may also be a driving source that outputs linear motion, for example, the pitch drive 42 may include but is not limited to an electric push rod, a pneumatic push rod, a hydraulic push rod, etc.; the pitch drive 42 may be connected to the base station antenna 200 by transmission through a push rod, a connecting rod, etc., and the base station antenna 200 is pushed to pitch and rotate by the pitch drive 42. The embodiment of the present application does not limit the specific driving method of the pitch drive 42.

[0090] In some specific embodiments, the pitch driving member 42 may be an electric push rod, and the inclination adjustment data of the inclination mechanism 4 may be recorded by an encoder and software of the electric push rod.

[0091] In some embodiments, see Figure 1 , Figure 3 , Figure 5 and Figure 6 The antenna mounting member 41 includes a first connecting member 411, the first connecting member 411 is arranged on the deflection mounting member 31, and the first connecting member 411 is provided with a first hinged portion 4111; the pitch driving member 42 is arranged on the deflection mounting member 31, and is spaced apart from the first connecting member 411 in the lifting direction Z, and the pitch driving member 42 is provided with a second hinged portion 421; the hinge axis of the first hinged portion 4111 and the hinge axis of the second hinged portion 421 are both perpendicular to the deflection axis O1, and the first hinged portion 4111 and the second hinged portion 421 are used to rotatably mount the base station antenna 200.

[0092] The pitch driving member 42 is used to drive the base station antenna 200 to rotate around the hinge axis of the first hinge part 4111 to adjust the inclination angle of the base station antenna 200, so that the hinge axis of the first hinge part 4111 is the pitch axis O2 of the base station antenna 200. For example, the pitch driving member 42 can be an electric push rod, which is driven by the electric push rod to adjust the distance between the upper end of the base station antenna 200 and the deflection mounting member 31, and the lower end of the base station antenna 200 rotates around the first hinge part 4111, thereby realizing the adjustment of the inclination angle of the base station antenna 200. The inclination angle data of the base station antenna 200 can be calculated by recording the encoder data of the electric push rod and the function of the first connecting member 411.

[0093] By setting the installation form of the base station antenna 200 to a hinged installation, the number of bolts used in the installation process can be greatly reduced, the installation and tightening are simple, and the precision requirements of the installation process are reduced, which effectively improves the debugging and installation efficiency and reduces the safety risks of the operation.

[0094] In some embodiments, see Figure 3 , Figure 6 and Figures 8 to 10 The antenna mounting member 41 further includes a second connecting member 412 , one end of the second connecting member 412 is hinged to the second hinged portion 421 , and the other end of the second connecting member 412 is provided with a third hinged portion 4121 .

[0095] The second connecting member 412 is connected to the pitch driving member 42, and the pitch driving member 42 can drive the second connecting member 412 to rotate around an axis parallel to the pitch axis O2 and / or move in a direction perpendicular to the pitch axis O2. By setting the second connecting member 412, base station antennas 200 with different installation spacings and different sizes can be adapted, and the installation spacing of the base station antenna 200 will not affect the inclination angle of the base station antenna 200, and the compatibility is stronger. In addition, the operator does not need to install it accurately on the tower, and the installation process of the base station antenna 200 is simple and convenient, which further improves the installation efficiency and reduces the safety risk of the operation.

[0096] In some embodiments, see Figure 5 and Figure 6 One end of the pitch driving member 42 is hinged to the yaw mounting member 31 , and the other end of the pitch driving member 42 is provided with a second hinged portion 421 .

[0097] By setting the pitch drive component 42 to be hinged with the deflection mounting component 31, base station antennas 200 of different installation intervals and different sizes can be adapted, and the adjustment of the inclination angle of the base station antenna 200 is not restricted by the installation distance of the base station antenna 200 and whether the operation of the installation workers is standardized, thereby improving the compatibility of the installation of the base station antenna 200 and the accuracy of the inclination angle adjustment. In addition, the installation process of the base station antenna 200 is simple and convenient, which is conducive to improving installation efficiency and reducing operational safety risks.

[0098] In some embodiments, see Figure 5 , Figure 7 and Figure 8 The antenna mounting member 41 further includes a mounting hinge seat 413 , which is used to be mounted on the base station antenna 200 , and a fourth hinge portion 4131 is disposed on the mounting hinge seat 413 .

[0099] The fourth hinged portion 4131 may be hinged in coordination with the first hinged portion 4111 , the second hinged portion 421 or the third hinged portion 4121 .

[0100] By setting the mounting hinge 413, it is possible to be compatible with base station antennas 200 of different installation spacings and different sizes, and to achieve universal installation for various base station antennas 200. The mounting hinge 413 can be used as the mounting interface of the base station antenna 200. The antenna manufacturer only needs to reserve a standard interface for connecting the mounting hinge 413, such as a mounting hole, and the installation operation is simple and convenient. In this way, the mounting interface of the base station antenna 200 is unified, and the specifications and models of the installation accessories of the antenna manufacturer are unified, which can reduce the development and operation management costs, simplify management, and is less prone to errors. At the same time, the installation operations of the antenna operation can be standardized and unified, which is conducive to reducing the cost of operation training and learning.

[0101] In some embodiments, see Figures 8 to 11 The lifting and lowering mounting member 21 includes a lifting and lowering connecting member 213 and at least one limiting member 215. The limiting member 215 is connected to the lifting and lowering connecting member 213. The limiting member 215 is also provided with a limiting guide hole 2151. The central axis of the limiting guide hole 2151 extends along the lifting direction Z; the deflection mounting member 31 is rotatably mounted outside the lifting and lowering connecting member 213, and the central axis of the deflection mounting member 31 is coaxially arranged with the deflection axis O1.

[0102] In this embodiment, the base station antenna installation adjustment device 100 can be installed on the pole 300 of the communication base station. The lifting connection member 213 is used for transmission connection with the lifting drive member 22. The limiting guide hole 2151 of the limiting member 215 is used to connect the pole 300 to install the lifting installation member 21 on the pole 300; the limiting member 215 can suppress the rotation tendency of the lifting installation member 21, which is conducive to improving the lifting and lowering movement stability of the lifting installation member 21. Moreover, the aperture of the limiting guide hole 2151 is larger than the outer diameter of the pole 300, so that the limiting member 215 can slide along the pole 300; thus, the pole 300 can serve as a guide structure for the lifting installation member 21, and can guide and limit the movement of the lifting installation member 21 along the lifting direction Z, which is conducive to maintaining the lifting and lowering movement stability of the lifting installation member 21.

[0103] In some embodiments, the fixed installation assembly 1 is fixed to the holding pole 300 through the first installation base plate 11 and the second installation base plate 12. The screw rod is rotatably connected between the first installation base plate 11 and the second installation base plate 12. The lifting connection member 213 can be a connecting sleeve, and the connecting sleeve is provided with a connecting threaded hole 2131, and the connecting sleeve is connected to the screw rod through the connecting threaded hole 2131; the lifting drive member 22 drives the screw rod to rotate, and the screw rod drives the connecting sleeve to move along the screw rod, thereby driving the lifting installation member 21 to move along the lifting direction Z, thereby realizing the adjustment of the height of the base station antenna 200.

[0104] In some embodiments, the deflection mounting member 31 may be a roller, which is rotatably sleeved on the outside of the lifting connection member 213, the central axis of the roller is coaxially arranged with the deflection axis O1, and a gear bar 36 is arranged on the outer peripheral wall of the roller; the deflection driving member 32 is arranged on a stopper 215, and a driving wheel 34 is connected to the output shaft of the deflection driving member 32, and the driving wheel 34 is meshed with the gear bar 36; driven by the deflection driving member 32 and the driving wheel 34, the gear bar 36 drives the roller to rotate around the central axis. At the same time, the inclination mechanism 4 is arranged on the roller, and the roller rotates around the central axis, driving the base station antenna 200 to rotate around the deflection axis O1, thereby realizing the adjustment of the azimuth angle of the base station antenna 200.

[0105] The tilt mechanism 4 can adjust the tilt angle of the base station antenna 200 .

[0106] The base station antenna installation and adjustment device 100 of this embodiment can adjust the height, azimuth and inclination of a single base station antenna 200. It has a simple structure, is easy to use, and occupies less space, which is conducive to meeting the layout requirements of the base station antenna 200.

[0107] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A base station antenna installation and adjustment device, characterized in that: include: Fixed installation components; A lifting mechanism is arranged on the fixed installation component, the lifting mechanism comprises a lifting installation member and a lifting driving member, the lifting installation member is connected to the lifting driving member, and the lifting driving member is configured to drive the lifting installation member to move along the lifting direction; A deflection mechanism is arranged on the lifting mounting member, the deflection mechanism comprises a deflection mounting member and a deflection driving member, the deflection mounting member is connected to the deflection driving member, the deflection driving member is configured to drive the deflection mounting member to rotate around a deflection axis, and the deflection axis is extended along the lifting direction; A tilt mechanism is arranged on the deflection mounting member, and the tilt mechanism includes an antenna mounting member and a pitch driving member. The antenna mounting member is used to rotatably mount the base station antenna on the deflection mounting member, and the pitch driving member is configured to drive the base station antenna to rotate, and the rotation axis of the base station antenna is perpendicular to the deflection axis.

2. The base station antenna installation and adjustment device according to claim 1, characterized in that: The lifting mounting member includes a first mounting plate, a second mounting plate and a lifting connection member vertically connected between the first mounting plate and the second mounting plate, the first mounting plate is provided with a first guide portion surrounding the lifting connection member, the second mounting plate is provided with a second guide portion surrounding the lifting connection member, and the central axis of the first guide portion and the central axis of the second guide portion are both coaxially arranged with the deflection axis; the deflection mounting member is slidably connected to the first guide portion and the second guide portion.

3. The base station antenna installation and adjustment device according to claim 1, characterized in that: The deflection mechanism further comprises a gear ring, the central axis of which is coaxially arranged with the deflection axis; the deflection mounting member is connected to the gear ring, and the deflection driving member is drivingly connected to the gear ring.

4. The base station antenna installation and adjustment device according to claim 3, characterized in that: The deflection mechanism includes a plurality of deflection mounting members, and the plurality of deflection mounting members are arranged at intervals in a circumferential direction around the deflection axis.

5. The base station antenna installation and adjustment device according to claim 4, characterized in that: The deflection mechanism comprises a plurality of gear rings, the plurality of gear rings are arranged in sequence along the lifting direction, and each of the deflection mounting members is connected to one of the gear rings; The deflection mechanism also includes a shift gear set, which includes a shift gear shaft and a transmission wheel connected to the shift gear shaft and a plurality of passive gears, the transmission wheel is transmission-connected to the deflection drive member, the shift gear shaft is extended along the lifting direction, and the shift gear shaft can move along the lifting direction to switch the corresponding passive gear to mesh with the ring gear.

6. The base station antenna installation and adjustment device according to any one of claims 1 to 5, characterized in that: The antenna mounting component includes a first connecting component, which is arranged on the deflection mounting component and is provided with a first hinged portion; the pitch driving component is arranged on the deflection mounting component and is spaced apart from the first connecting component in the lifting direction, and the pitch driving component is provided with a second hinged portion; the hinge axis of the first hinged portion and the hinge axis of the second hinged portion are both perpendicular to the deflection axis, and the first hinged portion and the second hinged portion are used to rotatably mount the base station antenna.

7. The base station antenna installation and adjustment device according to claim 6, characterized in that: One end of the pitch driving member is hinged to the yaw mounting member, and the other opposite end of the pitch driving member is provided with the second hinged portion; and / or, The antenna mounting member further comprises a second connecting member, one end of which is hinged to the second hinged portion, and the other end of the second connecting member opposite thereto is provided with a third hinged portion.

8. The base station antenna installation and adjustment device according to claim 6, characterized in that: The antenna mounting component also includes a mounting hinge seat, which is used to be mounted on the base station antenna, and a fourth hinge portion is provided on the mounting hinge seat.

9. The base station antenna installation and adjustment device according to any one of claims 1 to 5, characterized in that: The lifting mechanism further comprises a lifting guide, which is fixedly connected to the fixed installation component and extends along the lifting direction; the lifting installation component is slidably connected to the lifting guide.

10. The base station antenna installation and adjustment device according to claim 1, characterized in that: The lifting and lowering mounting member includes a lifting and lowering connecting member and at least one limiting member, wherein the limiting member is connected to the lifting and lowering connecting member, and a limiting guide hole is further provided on the limiting member, and the central axis of the limiting guide hole extends along the lifting direction; the deflection mounting member is rotatably sleeved on the outside of the lifting and lowering connecting member, and the central axis of the deflection mounting member is coaxially arranged with the deflection axis.

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