Movable frame type emergency communication iron tower

Abstract

The invention relates to the technical field of communication iron towers, in particular to a movable frame type emergency communication iron tower which comprises a movable frame. A communication mechanism; the lifting tower body is used for driving the communication mechanism to move and comprises a plurality of tower sections and a tray which is arranged below the tower sections and is used for bearing scraping objects in the tower sections; the detection mechanism is used for detecting the radial extrusion force of the connecting position of the two tower sections close to one side of the chassis, the weight of a scratching object of the tray and the signal emission intensity of the communication mechanism; the control mechanism is used for determining the leveling output force of the leveling assembly in the adjusting direction according to the maximum radial extrusion force and determining the response speed of the leveling assembly according to the intensity variation of the signal emission intensity of the communication mechanism under the condition of the pre-lifting test. And the stepping pause duration of the lifting tower body is adjusted according to the weight variation of the weight of the scratched object in the tray under the condition that the pre-lifting test is finished. The operation stability of the tower body is improved.

Description

Technical Field

[0001] This invention relates to the field of communication tower technology, and in particular to a mobile chassis-type emergency communication tower. Background Technology

[0002] In the existing technology, mobile frame-type emergency communication towers were developed based on the limitations of traditional fixed communication towers that could not quickly respond to emergency scenarios. Early mobile towers, such as trailer-mounted and vehicle-mounted towers, solved the mobility problem, but had drawbacks such as slow deployment speed, need for manual assistance, long time consumption, poor stability, and low equipment integration.

[0003] Chinese Patent Publication No. CN208650630U discloses a mobile lifting communication tower. The base frame has several hydraulic outriggers and legs. The tower body is mounted on a load-bearing platform on the base frame. Support columns are installed on the load-bearing platforms on both the front and rear sides of the tower body. The rear support column is connected to the tower body and fixed to the load-bearing platform via support rods. The lower part of the tower body is also connected to the load-bearing platform via a tower body support cylinder. A winch is installed at the bottom of the tower body. A hydraulic station below the base frame is connected to the hydraulic outriggers, legs, and tower body support cylinder. Therefore, this mobile lifting communication tower suffers from problems such as uneven spatial bearing capacity of the foundation, which varies over time, causing the chassis to deviate from its intended direction during the dynamic process of tower lifting and extension. This leads to stress concentration at the joints of the tower sections due to additional bending moments, accelerating wear. Summary of the Invention

[0004] To address this, the present invention provides a mobile chassis-type emergency communication tower to overcome the problems in the prior art where, due to the uneven spatial bearing capacity of the foundation and its variation over time, the horizontal state of the chassis may deviate during the dynamic process of tower lifting and extension, causing the communication signal beam to deviate from the predetermined direction and the stress concentration at the joints of each tower segment due to additional bending moments, thus accelerating wear.

[0005] To achieve the above objectives, the present invention provides a mobile chassis-type emergency communication tower, comprising: A mobile frame, including a chassis and a leveling assembly connected to the chassis for adjusting the levelness of the chassis; A communication mechanism, which is located above the mobile frame, is used to receive and transmit communication signals; The lifting tower body, which is connected to the communication mechanism and is used to drive the communication mechanism to move, includes several tower sections and a tray disposed below the tower sections to receive scraped objects inside the tower sections; The detection mechanism is connected to the lifting tower body and the communication mechanism respectively, and is used to detect the radial compressive force at the connection position of the two tower sections near the chassis, the weight of the scraped object on the tray, and the signal transmission strength of the communication mechanism respectively. A control mechanism, which is connected to the mobile frame, the lifting tower, and the communication mechanism, is used to determine the leveling output force of the leveling component in the adjustment direction based on the maximum radial compressive force, determine the response speed of the leveling component based on the intensity change of the signal transmission intensity of the communication mechanism under the pre-lifting test conditions, and adjust the step pause duration of the lifting tower based on the weight change of the scraped object in the tray under the conditions after the pre-lifting test ends.

[0006] Furthermore, the testing institution includes: Several pressure sensors are disposed on the inner surface of the tower section near the chassis side to detect the radial compressive force at the connection point of two tower sections connected near the chassis side. A weight sensor, connected to the tray, is used to detect the weight of the scraped material inside the tray.

[0007] Furthermore, the leveling assembly includes four hydraulic outriggers positioned below the chassis.

[0008] Furthermore, the control mechanism is connected to the leveling assembly and several pressure sensors to obtain the maximum radial compressive force at the connection point of the two tower sections connected near the chassis during the pre-lifting test, and to obtain the adjustment direction corresponding to the maximum radial compressive force. If the maximum radial extrusion pressure is greater than the preset extrusion pressure, then the leveling output force of the two adjacent hydraulic outriggers corresponding to the adjustment direction is increased.

[0009] Furthermore, the maximum radial compressive force is the maximum value of the radial compressive force at the connection point of two tower sections connected to each other near the chassis side, under the condition that the lifting tower body rises to the highest point during the pre-lifting test.

[0010] Furthermore, the control mechanism is connected to the communication mechanism and the leveling component respectively, and is used to obtain the intensity change of the signal transmission intensity of the communication mechanism during the pre-lift test. If the intensity change is greater than or equal to a preset intensity change, the response speed of the leveling component is reduced.

[0011] Furthermore, the intensity change is the difference between the maximum and minimum values ​​of the signal transmission intensity of the communication mechanism during the pre-lift test.

[0012] Furthermore, the control mechanism is connected to the weight sensor and the lifting tower body respectively to obtain the weight change of the scraped object in the tray before and after the pre-lifting test. If the weight change is greater than or equal to the preset weight change, the step pause time of the lifting tower body is increased.

[0013] Furthermore, the weight change is the difference between the weight of the scraped object in the tray at the end of the pre-lift test and the weight of the scraped object in the tray at the beginning of the pre-lift test.

[0014] Furthermore, the lifting tower also includes a stepper motor for driving the tower sections to extend and retract.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The device of the present invention, by setting up a mobile frame, a communication mechanism, a lifting tower, a detection mechanism, and a control mechanism, addresses the problem of chassis horizontal instability caused by uneven foundation bearing pressure. It utilizes multiple pressure sensors placed at the tower section connection near the chassis to detect the radial reaction force distribution characteristics of the tower on the chassis during lifting. Based on the maximum radial compressive force and its adjustment direction identified in the pre-lifting test, it locates the main direction of chassis tilt and drives two adjacent hydraulic outriggers in the corresponding direction to work together to increase force and level the chassis, thus restoring the chassis to a horizontal state. Spatial directivity is improved, the peak value of additional bending moment during the lifting and lowering of the tower body is reduced, and the loosening of bolts and deformation failure of sealing rings at the flange connection of the tower sections are delayed. By using a tray under the tower section to collect scraping debris generated during the lifting and lowering process, the accumulation of debris is monitored to determine whether the relative motion friction between the tower sections is aggravated. By extending the step pause time of the lifting tower body, the scraping debris between the tower sections is fully dropped into the tray, avoiding the continuous jamming of the tower sections by debris, which would lead to aggravated wear or lifting and lowering jams. By adjusting the response speed according to the signal transmission strength, the directional stability of the communication beam during the lifting and lowering of the tower body is improved.

[0016] Furthermore, the device of the present invention detects the radial compressive force at the tower section connection position near the chassis by setting a pressure sensor and a leveling component, and adjusts the output force of the corresponding hydraulic outrigger according to the maximum compressive force and its adjustment direction. When the local bearing capacity of the foundation decreases or the tower body is subjected to eccentric load due to wind, movement or other factors, it avoids the overall displacement of the tower body and the deviation of the communication signal due to the tilt of the chassis, thereby improving the adaptability and stability of the tower body under non-ideal foundation conditions.

[0017] Furthermore, the device described in this invention improves the first-pass success rate and link stability in complex terrain by reducing the response speed of the leveling component to avoid the transient oscillations caused by rapid leveling being superimposed on the antenna attitude and causing beam jitter amplification. This is achieved during the pre-lifting test phase when the tower body extends step by step, if the antenna normal deviates from the design pointing angle due to slight tilting of the chassis or slight twisting of the tower section.

[0018] Furthermore, the device of the present invention monitors latent wear products such as aging and peeling of lubricating grease, embedding of foreign objects, and accumulation of rust on the inner wall of the tower section by setting a tray at the bottom of the tower body to receive scraped objects; by increasing the stepper motor's stepping pause time according to the change in the weight of the tray before and after pre-lifting, more sufficient vibration attenuation is reserved, thereby reducing the risk of motor stalling and gear damage caused by sudden jamming of scraped objects. Increasing the stepping pause time allows the tower section more time to self-align and release stress during the extension and retraction process, reducing hard scraping and wear accumulation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the mobile frame-type emergency communication tower according to an embodiment of the present invention; Figure 2 This is a top-view projection diagram of a tower section of the movable frame-type emergency communication tower according to an embodiment of the present invention; Figure 3 This is an overall structural block diagram of the mobile chassis-type emergency communication tower according to an embodiment of the present invention; Figure 4 This is a block diagram showing the connection structure between the detection mechanism and the control mechanism of the movable frame-type emergency communication tower according to an embodiment of the present invention; The reference numerals are as follows: 1-Communication antenna, 2-Tower section, 3-Panel, 4-Chassis, 5-Hydraulic outrigger, 6-Pressure sensor. Detailed Implementation

[0020] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0023] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The figures shown are, respectively, a schematic diagram of the overall structure of the movable frame-type emergency communication tower according to an embodiment of the present invention, a top view of a tower section, a block diagram of the overall structure, and a block diagram of the connection structure between the detection mechanism and the control mechanism. The movable frame-type emergency communication tower according to an embodiment of the present invention includes: The mobile frame includes a chassis 4 and a leveling assembly connected to the chassis 4 for adjusting the levelness of the chassis 4; A communication mechanism, which is located above the mobile frame, is used to receive and transmit communication signals; The lifting tower body, which is connected to the communication mechanism, is used to drive the communication mechanism to move. It includes several tower sections 2 and several trays 3 arranged below the tower sections 2 to receive scraped objects inside the tower sections 2. The detection mechanism is connected to the lifting tower body and the communication mechanism respectively, and is used to detect the radial compressive force at the connection position of the two tower sections 2 near the chassis 4, the weight of the scraped object on the tray 3, and the signal transmission strength of the communication mechanism respectively. The control mechanism, which is connected to the mobile frame, the lifting tower and the communication mechanism respectively, is used to determine the leveling output force of the leveling component in the adjustment direction according to the maximum radial compressive force, determine the response speed of the leveling component according to the intensity change of the signal transmission intensity of the communication mechanism under the pre-lifting test conditions, and adjust the step pause duration of the lifting tower according to the weight change of the scraped object in the tray 3 under the conditions after the pre-lifting test ends.

[0025] Specifically, the chassis 4 of the mobile frame is welded from Q355B high-strength steel, and the bottom is reserved with a flange interface for connecting to the hydraulic outriggers 5. The flange thickness is not less than 20mm. The four hydraulic outriggers 5 are symmetrically distributed at the four corners of the chassis 4. Each hydraulic outrigger 5 includes a cylinder, a piston rod and a support foot plate. The bottom of the support foot plate is covered with an anti-slip rubber pad with a hardness of 70±5HA. The control mechanism adjusts the oil pressure of each hydraulic outrigger 5 through a proportional solenoid valve. The mobile chassis also includes a trailer axle assembly located under chassis 4; The trailer axle assembly is an integration of one or two single / dual axles and tires. In this embodiment, alternatives to the trailer axle assembly include self-propelled chassis and truck-integrated chassis.

[0026] Specifically, the control mechanism uses a PLC controller.

[0027] Specifically, the pre-lift test is a tower lifting simulation process conducted under the condition of not applying the maximum communication load / only applying the test signal. The tower is controlled to perform test leveling, rise to the maximum height, and fall to the fully retracted state in sequence.

[0028] Specifically, the adjustment direction is the projection direction of the radial maximum compressive force onto the horizontal plane, that is, when the radial maximum compressive force is detected, the projection direction of the extension line of the connection between the pressure sensor 6 and the lifting axis of the tower body onto the horizontal plane.

[0029] Specifically, the communication mechanism includes a communication antenna 1 and a radio frequency unit connected to the communication antenna 1.

[0030] In implementation, the device of this invention, by setting up a mobile frame, communication mechanism, lifting tower, detection mechanism, and control mechanism, addresses the problem of horizontal instability of chassis 4 caused by uneven foundation bearing pressure. It utilizes multiple pressure sensors 6 positioned at the connection point of tower section 2 near chassis 4 to detect the radial reaction force distribution characteristics of the tower body on chassis 4 during lifting. Based on the maximum radial compressive force and its adjustment direction identified in the pre-lifting test, it locates the main tilt direction of chassis 4 and drives two adjacent hydraulic outriggers 5 in the corresponding direction to coordinate force amplification and leveling, giving the process of chassis 4 restoring horizontality spatial directionality and reducing [unclear meaning - possibly referring to a specific instability issue]. The additional bending moment peak of the lower tower body during the dynamic process of lifting and lowering delays the loosening of bolts at the flange connection of tower section 2 and the failure of the sealing ring due to deformation. By using the tray 3 below tower section 2 to collect scraping debris generated during the lifting and lowering process, the accumulation of debris is monitored to determine whether the relative motion friction between tower sections 2 has intensified. By extending the step pause time of the lifting tower body, the scraping debris between tower sections 2 is fully allowed to fall onto the tray 3, avoiding the continuous jamming of debris in tower section 2, which would lead to increased wear or lifting and lowering jams. By adjusting the response speed according to the signal transmission strength, the directional stability of the communication beam during the lifting and lowering of the tower body is improved.

[0031] Specifically, the testing institution includes: Several pressure sensors 6 are disposed on the inner surface of the tower section 2 near the side of the chassis 4 to detect the radial compressive force at the connection position of two tower sections 2 connected near the side of the chassis 4. A weight sensor, which is connected to the tray 3, is used to detect the weight of the scratches inside the tray 3.

[0032] Specifically, the tray 3 is a rectangular container with a rigid base plate. In this embodiment, the weight sensor is a cantilever beam load cell. The bottom of the tray 3 is provided with 3 to 4 lugs. Each lug is connected to the upper end of the cantilever beam load cell by bolts. The lower end of the cantilever beam load cell is fixed on the chassis 4.

[0033] Specifically, a receiver is installed on the tower below the communication mechanism to obtain the field strength of the communication signal radiated by the communication antenna 1 in space. The field strength detected by the receiver is the signal transmission intensity.

[0034] Specifically, the leveling assembly includes four hydraulic outriggers 5 disposed below the chassis 4.

[0035] In practice, the device of the present invention detects the radial compressive force at the connection position of the tower section 2 near the chassis 4 by setting a pressure sensor 6 and a leveling component, and adjusts the output force of the corresponding hydraulic support leg 5 according to the maximum compressive force and its adjustment direction. When the local bearing capacity of the foundation decreases or the tower body is subjected to eccentric load due to wind, movement and other factors, it avoids the overall displacement of the tower body and the deviation of the communication signal due to the tilt of the chassis 4, thereby improving the adaptability and stability of the tower body under non-ideal foundation conditions.

[0036] Specifically, the control mechanism is connected to the leveling assembly and several pressure sensors 6 to obtain the maximum radial compressive force at the connection position of the two tower sections 2 connected near the chassis 4 during the pre-lifting test, and to obtain the adjustment direction corresponding to the maximum radial compressive force. If the maximum radial extrusion pressure is greater than the preset extrusion pressure, then the leveling output force of the two adjacent hydraulic outriggers 5 corresponding to the adjustment direction is increased.

[0037] In this embodiment, the chassis 4 is rectangular in shape. On the inner wall of the first tower section 2 near the chassis 4, four pressure sensors 6 are installed at equal intervals along the circumference. The four pressure sensors 6 are respectively set on two axes of the rectangular chassis 4. Each pressure sensor 6 has a hydraulic support leg 5 on both sides of the extension line connecting it to the lifting axis relative to the tower body.

[0038] Specifically, under the condition that the single-sided overlap length of the bottom two sections of the lifting tower is 1.2 meters and the wall thickness of section 2 is 4 mm, the general range of the preset compressive force is [480N, 550N], and the preferred embodiment of the preset compressive force is 500N.

[0039] Those skilled in the art will understand that the range of preset extrusion pressure and the preferred embodiment provided in this embodiment are the values ​​that are most effective in solving the technical problem of the present invention under the conditions that the single-sided overlap length of the bottom two sections of the lifting tower is 1.2 meters and the wall thickness of the tower section 2 is 4 mm. In actual applications or experiments, those skilled in the art can make adaptive adjustments to the preset extrusion pressure according to the actual application environment and application scenario.

[0040] In practice, if the difference between the maximum radial extrusion pressure and the preset extrusion pressure exceeds 10N, the leveling output force of the two adjacent hydraulic outriggers 5 corresponding to the adjustment direction will increase by 20N. For example, if the difference between the maximum radial extrusion pressure and the preset extrusion pressure is 100N, the leveling output force of the two corresponding hydraulic outriggers 5 will increase by 10×20=200N based on the test leveling.

[0041] Specifically, the maximum radial compressive force is the maximum value of the radial compressive force at the connection position of the two tower sections 2 connected to the side of the chassis 4 when the lifting tower body is raised to the highest point during the pre-lifting test.

[0042] In practice, the device of the present invention improves the first-pass success rate and link stability in complex terrain by reducing the response speed of the leveling component to avoid the transient oscillations caused by rapid leveling being superimposed on the antenna attitude and causing beam jitter amplification. This is reflected in the main lobe of the radiation pattern being distorted during the pre-lifting test phase when the tower body extends step by step.

[0043] Specifically, the control mechanism is connected to the communication mechanism and the leveling component respectively, and is used to obtain the intensity change of the signal transmission intensity of the communication mechanism during the pre-lift test. If the intensity change is greater than or equal to a preset intensity change, the response speed of the leveling component is reduced.

[0044] Specifically, the response speed is adjusted by controlling the proportional gain of the control circuit of the electro-hydraulic proportional valve controlling the hydraulic outrigger 5.

[0045] Specifically, the intensity change is the difference between the maximum and minimum values ​​of the signal transmission intensity of the communication mechanism during the pre-lift test.

[0046] Specifically, under the physical layer specifications of the supported 4G LTE communication standard and the condition that the communication mechanism transmits a test signal with a fixed nominal power of 2W in the pre-rise and fall test, the general range of the preset intensity change is [1dB, 3dB], and the preferred embodiment of the preset intensity change is 2dB.

[0047] Those skilled in the art will understand that the selectable range of the preset intensity variation amount and the preferred embodiment provided in this embodiment are the values ​​that are most effective in solving the technical problem of the present invention under the conditions of the physical layer specification of the supported communication standard 4G LTE and the communication mechanism transmitting the test signal with a fixed nominal power of 2W in the pre-rise and fall test. In actual applications or experiments, those skilled in the art can make adaptive adjustments to the preset intensity variation amount according to the actual application environment and application scenario.

[0048] In practice, for every 0.1dB increase in the difference between the strength change and the preset strength change, the proportional gain of the electro-hydraulic proportional valve control circuit of the hydraulic outrigger 5 decreases by 0.01. For example, if the default value of the proportional gain is 2.5 and the difference between the strength change and the preset strength change is 0.3dB, then the proportional gain decreases to 2.5-0.01×3=2.47.

[0049] Specifically, the control mechanism is connected to the weight sensor and the lifting tower body respectively, in order to obtain the weight change of the scraped object in the tray 3 before and after the pre-lifting test. If the weight change is greater than or equal to the preset weight change, the step pause time of the lifting tower body is increased.

[0050] Specifically, the step pause duration is the duration of the pause action after each tower section 2 of the tower body moves during the lifting and lowering process.

[0051] Specifically, the weight change is the difference between the weight of the scraped object in the tray 3 at the end of the pre-lift test and the weight of the scraped object in the tray 3 at the beginning of the pre-lift test.

[0052] Specifically, the lifting tower also includes a stepper motor that drives the tower section 2 to extend and retract.

[0053] Specifically, under the condition that the single-sided overlap length of the bottom two sections of the lifting tower is 1.2 meters and the wall thickness of section 2 is 4 mm, the general range of the preset weight change is [10g, 20g], and the preferred embodiment of the preset weight change is 12g.

[0054] Those skilled in the art will understand that the selectable range of preset weight change amount and the preferred embodiment provided in this embodiment are the values ​​that are most effective in solving the technical problem of the present invention under the conditions that the single-sided overlap length of the bottom two tower sections of the lifting tower is 1.2 meters and the wall thickness of tower section 2 is 4 mm. In actual application or experiment, those skilled in the art can make adaptive adjustments to the preset weight change amount according to the actual application environment and application scenario.

[0055] In practice, if the difference between the weight change and the preset weight change increases by 1g, the step pause duration will increase by 0.4s. For example, if the difference between the weight change and the preset weight change is 5g and the current step pause duration is 2.5s, then the step pause duration will increase to 2.5s + 5 × 0.4s = 4.5s.

[0056] In practice, the device of the present invention monitors latent wear products such as aging and peeling of lubricating grease, embedding of foreign objects, and accumulation of rust on the inner wall of the tower section 2 by setting a tray 3 at the bottom of the tower body to receive scraped objects; by increasing the stepping pause time of the stepper motor according to the weight change of the tray 3 before and after pre-lifting, more sufficient vibration attenuation is reserved, thereby reducing the risk of motor stalling and gear damage caused by sudden jamming of scraped objects. Increasing the stepping pause time allows the tower section 2 to have more time for self-centering and stress release during the extension and retraction process, reducing hard scraping and wear accumulation.

[0057] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A mobile, vehicle-mounted emergency communication tower, characterized in that, include: A mobile frame, including a chassis and a leveling assembly connected to the chassis for adjusting the levelness of the chassis; A communication mechanism, which is located above the mobile frame, is used to receive and transmit communication signals; The lifting tower body, which is connected to the communication mechanism and is used to drive the communication mechanism to move, includes several tower sections and a tray disposed below the tower sections to receive scraped objects inside the tower sections; The detection mechanism is connected to the lifting tower body and the communication mechanism respectively, and is used to detect the radial compressive force at the connection position of the two tower sections near the chassis, the weight of the scraped object on the tray, and the signal transmission strength of the communication mechanism respectively. A control mechanism, which is connected to the mobile frame, the lifting tower, and the communication mechanism, is used to determine the leveling output force of the leveling component in the adjustment direction based on the maximum radial compressive force, determine the response speed of the leveling component based on the intensity change of the signal transmission intensity of the communication mechanism under the pre-lifting test conditions, and adjust the step pause duration of the lifting tower based on the weight change of the scraped object in the tray under the conditions after the pre-lifting test ends.

2. The mobile chassis-type emergency communication tower according to claim 1, characterized in that, The testing institutions include: Several pressure sensors are disposed on the inner surface of the tower section near the chassis side to detect the radial compressive force at the connection point of two tower sections connected near the chassis side. A weight sensor, connected to the tray, is used to detect the weight of the scraped material inside the tray.

3. The mobile chassis-type emergency communication tower according to claim 2, characterized in that, The leveling assembly includes four hydraulic outriggers positioned below the chassis.

4. The mobile chassis-type emergency communication tower according to claim 3, characterized in that, The control mechanism is connected to the leveling assembly and several pressure sensors to obtain the maximum radial compressive force at the connection point of two tower sections connected near the chassis during the pre-lifting test, and to obtain the adjustment direction corresponding to the maximum radial compressive force. If the maximum radial extrusion pressure is greater than the preset extrusion pressure, then the leveling output force of the two adjacent hydraulic outriggers corresponding to the adjustment direction is increased.

5. The mobile chassis-type emergency communication tower according to claim 4, characterized in that, The maximum radial compressive force is the maximum value of the radial compressive force at the connection point of two tower sections connected to each other on the side of the chassis, under the condition that the lifting tower body rises to the highest point during the pre-lifting test.

6. The mobile chassis-type emergency communication tower according to claim 5, characterized in that, The control mechanism is connected to the communication mechanism and the leveling component respectively, and is used to obtain the intensity change of the signal transmission intensity of the communication mechanism during the pre-lift test. If the intensity change is greater than or equal to the preset intensity change, the response speed of the leveling component is reduced.

7. The mobile chassis-type emergency communication tower according to claim 6, characterized in that, The intensity change is the difference between the maximum and minimum values ​​of the signal transmission intensity of the communication mechanism during the pre-lift test.

8. The mobile chassis-type emergency communication tower according to claim 7, characterized in that, The control mechanism is connected to the weight sensor and the lifting tower body respectively, and is used to obtain the weight change of the scraped object in the tray before and after the pre-lifting test. If the weight change is greater than or equal to the preset weight change, the step pause time of the lifting tower body is increased.

9. The mobile chassis-type emergency communication tower according to claim 8, characterized in that, The weight change is the difference between the weight of the scraped object in the tray at the end of the pre-lift test and the weight of the scraped object in the tray at the beginning of the pre-lift test.

10. The mobile chassis-type emergency communication tower according to claim 9, characterized in that, The lifting tower also includes a stepper motor that drives the tower sections to extend and retract.

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