Multi-section stand column lifting mechanism of movable lighting lamp trolley

Abstract

The utility model relates to a multi-section stand column lifting mechanism of a movable illuminating lamp vehicle, and belongs to the technical field of movable illuminating lamp vehicle production. Comprising a plurality of telescopic joint arms which stretch out and draw back step by step and are connected in a sliding fit mode, each set of telescopic joint arms is provided with a set of transmission mechanism, the transmission mechanism is used for transmitting the telescopic motion of any stage of telescopic joint arm to the next stage of telescopic joint arm, and the telescopic joint arm located on the bottom layer is the first stage of telescopic joint arm and the second stage of telescopic joint arm is the second stage of telescopic joint arm. The first-stage telescopic knuckle arm is in telescopic sliding connection with the bottom-layer primary fixed knuckle arm, and a lifting driving mechanism for driving the first-stage telescopic knuckle arm to axially move relative to the bottom-layer primary fixed knuckle arm is mounted on the bottom-layer primary fixed knuckle arm. The telescopic arm has the following beneficial effects that when the lifting driving mechanism drives the first-stage telescopic arm to do telescopic motion, the first-stage telescopic arm simultaneously drives the subsequent telescopic arms of all stages to do telescopic motion, so that the telescopic arms of all stages can do telescopic motion at the same time.

Description

Technical Field

[0001] The utility model relates to a multi-section column lifting mechanism for a mobile lighting lamp vehicle, belonging to the technical field of mobile lighting lamp vehicle production. Background Art

[0002] At present, mobile lighting vehicles are widely used, mainly in outdoor operations, disaster relief, road maintenance, and emergency lighting.

[0003] Patent number CN201510456135.3 discloses a mobile lighting tower, which includes a vehicle body and a lighting component, wherein a generator set is arranged in the vehicle body, and the generator set supplies power to the lighting component, and further includes a bottom plate, a lifting rod, a control box, and a pneumatic pump, wherein the bottom plate is vertically welded to the side of the vehicle body, one end of the lifting rod is fixed to the bottom plate, and the other end is fixedly connected to the lighting component; the control box is welded to the bottom plate, and the pneumatic pump is fixed in the control box; and the output end of the pneumatic pump controls the lifting and lowering of the lifting rod.

[0004] Although the above patent can realize the lifting function of the lifting rod, the current technical considerations are not comprehensive and have the following disadvantages: the output end of the pneumatic pump controls the lifting and lowering of the lifting rod, which is easy to damage and has high manufacturing costs, and the existing multi-section manual column lifting mechanism cannot realize that when the lifting drive mechanism drives the first-stage telescopic arm to perform telescopic movement, the first-stage telescopic arm drives the subsequent stages of telescopic arms to perform telescopic movement at the same time, so that the telescopic arms of each stage can achieve simultaneous telescopic movement.

[0005] In order to solve one of the above problems, a multi-section column lifting mechanism for a mobile lighting vehicle is urgently needed. Utility Model Content

[0006] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: how to realize that when the lifting drive mechanism drives the first-stage telescopic arm to perform telescopic movement, the first-stage telescopic arm drives the subsequent telescopic arms of each level to perform telescopic movement at the same time, so that the telescopic arms of each level can achieve simultaneous telescopic movement, and the telescopic speed is greatly improved. For this purpose, a multi-section column lifting mechanism for a mobile lighting vehicle is provided.

[0007] The multi-section column lifting mechanism of the mobile lighting vehicle described in the utility model is characterized by: it includes a plurality of telescopic joint arms that are telescopically extended step by step and slidably connected, and each group of telescopic joint arms is respectively equipped with a group of transmission mechanisms, and the transmission mechanisms are used to transmit the telescopic movement of the telescopic joint arms at any level to the telescopic joint arms at the next level. The telescopic joint arm at the bottom level is the first-level telescopic joint arm, and the first-level telescopic joint arm is telescopically and slidably connected to the bottom-level primary fixed joint arm, and the bottom-level primary fixed joint arm is equipped with a lifting drive mechanism for driving the first-level telescopic joint arm to perform axial movement relative to the bottom-level primary fixed joint arm.

[0008] Preferably, the lifting drive mechanism includes a manual winch installed on the outer wall of the bottom primary fixed section arm, a steel wire rope A is wound on the manual winch, a right reversing pulley A and a left reversing pulley A are respectively provided on both sides of the top of the bottom primary fixed section arm, and a section arm bottom reversing pulley A is rotatably installed at the bottom of the first-stage telescopic section arm, and the rope end of the steel wire rope A passes through the left reversing pulley A, the section arm bottom reversing pulley A, and the right reversing pulley A in turn and is fixed on the outer wall of the bottom primary fixed section arm.

[0009] Preferably, a first wheel frame and a second wheel frame are respectively provided on the outer wall at the top of the bottom primary fixed section arm, the right reversing pulley A is rotatably installed on the top of the first wheel frame, the rope end of the wire rope A is fixed on the first wheel frame below the right reversing pulley A, the left reversing pulley A is rotatably installed on the second wheel frame, the manual winch is installed below the second wheel frame, and a wire rope through hole A for the wire rope A to pass through is respectively provided on the bottom primary fixed section arm on the inner side of the right reversing pulley A and the left reversing pulley A, and the wire rope A enters the bottom primary fixed section arm from the wire rope through hole A.

[0010] Preferably, the telescopic boom comprises a first-stage telescopic boom, a second-stage telescopic boom, a third-stage telescopic boom, a fourth-stage telescopic boom, a fifth-stage telescopic boom and a sixth-stage telescopic boom which are telescoped step by step and connected in a sliding manner, a first transmission mechanism is installed on the upper part of the first-stage telescopic boom, the first transmission mechanism is used to transmit the telescopic movement of the first-stage telescopic boom to the second-stage telescopic boom, a second transmission mechanism is installed on the upper part of the second-stage telescopic boom, the second transmission mechanism is used to transmit the telescopic movement of the second-stage telescopic boom to the third-stage telescopic boom, a third transmission mechanism is installed on the upper part of the third-stage telescopic boom, the third transmission mechanism is used to transmit the telescopic movement of the third-stage telescopic boom to the third-stage telescopic boom The telescopic movement of the first-stage telescopic joint arm is transmitted to the fourth-stage telescopic joint arm, and a fourth transmission mechanism is installed on the upper part of the fourth-stage telescopic joint arm. The fourth transmission mechanism is used to transmit the telescopic movement of the fourth-stage telescopic joint arm to the fifth-stage telescopic joint arm, and a fifth transmission mechanism is installed on the upper part of the fifth-stage telescopic joint arm. The fifth transmission mechanism is used to transmit the telescopic movement of the fifth-stage telescopic joint arm to the sixth-stage telescopic joint arm. The sixth-stage telescopic joint arm is telescopically and slidably connected with the fifth-stage telescopic joint arm, and the telescopic direction of the first-stage telescopic joint arm, the second-stage telescopic joint arm, the third-stage telescopic joint arm, the fourth-stage telescopic joint arm, the fifth-stage telescopic joint arm and the sixth-stage telescopic joint arm is a vertical direction.

[0011] Preferably, the first-stage telescopic arm comprises a hollow rectangular tubular structure, a nylon limit plate slidingly matched with the outer wall of the second-stage telescopic arm is installed at the top opening of the first-stage telescopic arm, and a nylon liner slidingly matched with the inner wall of the bottom primary fixed arm is provided on the front and rear side plates at the bottom of the first-stage telescopic arm. The displacement of the multi-section column in the front, back, left and right directions can be limited, and the nylon material can effectively reduce friction.

[0012] Preferably, the first-stage telescopic boom and the second-stage telescopic boom have the same structure.

[0013] Preferably, the first transmission mechanism includes a steel wire rope B, and the right and left reversing pulleys B and B are rotatably installed on both sides of the top of the first-stage telescopic boom through the third and fourth wheel frames, respectively; the inner bottom of the second-stage telescopic boom is rotatably installed with a reversing pulley B at the bottom of the boom; a steel wire rope through hole D for the steel wire rope B to pass through is respectively provided on the side panels of the second-stage telescopic boom on both sides of the reversing pulley B at the bottom of the boom; an auxiliary reversing wheel B and an auxiliary reversing wheel A are rotatably installed in the two groups of steel wire rope through holes D, respectively; one end of the steel wire rope B is fixed on the first wheel frame, and the other end is fixed on the second wheel frame after passing through the right reversing pulley B, the auxiliary reversing wheel A, the reversing pulley B at the bottom of the boom, the auxiliary reversing wheel B, and the left reversing pulley B in sequence.

[0014] Preferably, a wire rope through hole D for the wire rope B to pass through is respectively provided on the first-stage telescopic section arm inside the right reversing pulley B and the left reversing pulley B, and the wire rope B enters the first-stage telescopic section arm from the wire rope through hole D.

[0015] Preferably, a wire rope through hole C for the wire rope A to pass through is respectively provided on the side panels of the first-stage telescopic boom on both sides of the reversing pulley A at the bottom of the boom, and an auxiliary reversing wheel D and an auxiliary reversing wheel C are respectively rotatably installed in the two groups of wire rope through holes C. The wire rope A passes around the auxiliary reversing wheel D, the reversing pulley A at the bottom of the boom, and the auxiliary reversing wheel C in turn, and the wire rope A enters the bottom of the first-stage telescopic boom from the wire rope through hole C.

[0016] Preferably, the first transmission mechanism, the second transmission mechanism, the third transmission mechanism, the fourth transmission mechanism and the fifth transmission mechanism have the same structure, the first-stage telescopic arm, the second-stage telescopic arm, the third-stage telescopic arm, the fourth-stage telescopic arm, the fifth-stage telescopic arm and the sixth-stage telescopic arm have the same structure, and are thin-walled square tubes together with the bottom primary fixed arm.

[0017] Preferably, the above-mentioned reversing wheels all have wheel grooves.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The multi-section column lifting mechanism of the mobile lighting vehicle described in the utility model, the transmission mechanism is used to transmit the telescopic movement of the telescopic arm of any level to the telescopic arm of the next level, and through the power transmission effect of each transmission mechanism on the lifting drive mechanism, when the lifting drive mechanism drives the first-level telescopic arm to perform telescopic movement, the first-level telescopic arm can simultaneously drive the subsequent telescopic arms of each level to perform telescopic movement, so that the telescopic arms of each level can achieve simultaneous telescopic movement, and the telescopic speed is greatly improved.

[0020] The multi-section column lifting mechanism of the mobile lighting vehicle described in the utility model and the stable sliding relationship between the telescopic section arms can effectively avoid the column from tilting after being raised, thereby ensuring the stability of the equipment. In addition, the reasonable arrangement of the movable pulley and the static pulley can achieve the purpose of saving more labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1It is a schematic diagram of the internal structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the external structure of the bottom primary fixed section arm of the utility model;

[0024] Figure 3 This is a schematic diagram of the external structure of the first-stage telescopic boom of the utility model;

[0025] In the figure: 1.1, bottom primary fixed boom 1.2, first stage telescopic boom 1.3, second stage telescopic boom 1.4, third stage telescopic boom 1.5, fourth stage telescopic boom 1.6, fifth stage telescopic boom 1.7, sixth stage telescopic boom 2.1, manual winch 2.2, right reversing pulley A 2.3, wire rope A 2.4, left reversing pulley A 2.5, reversing pulley A at bottom of boom 3.1, nylon lining 3.2, nylon limit plate 4.1, right reversing pulley B 4.2, left reversing pulley B 4.3, reversing pulley B at bottom of boom 4.4, wire rope passing through hole D 4.5, auxiliary reversing pulley B 4.6, wire rope B. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings: The utility model is further illustrated below through specific embodiments, but is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the invention should be included in the protection scope of the utility model.

[0027] Embodiment 1, as Figure 1-2 As shown, the multi-section column lifting mechanism of a mobile lighting vehicle, the multi-section column lifting mechanism of the mobile lighting vehicle, includes a plurality of telescopic arms that are telescopically extended step by step and slidably connected, and each group of telescopic arms is respectively installed with a group of transmission mechanisms, and the transmission mechanisms are used to transmit the telescopic movement of the telescopic arms at any level to the telescopic arms at the next level. The telescopic arms at the bottom level are the first-level telescopic arms 1.2, and the first-level telescopic arms 1.2 are telescopically and slidably connected with the bottom-level primary fixed arms 1.1. The bottom-level primary fixed arms 1.1 are installed with a lifting drive mechanism for driving the first-level telescopic arms 1.2 to perform axial movement relative to the bottom-level primary fixed arms 1.1.

[0028] The bottom primary fixed boom 1.1 is installed on the existing mobile frame, and a lighting lamp is installed on the top of the sixth telescopic boom 1.7.

[0029] The transmission mechanism is used to transmit the telescopic movement of the telescopic arm at any level to the telescopic arm at the next level. Through the power transmission effect of each transmission mechanism on the lifting drive mechanism, when the lifting drive mechanism drives the first-level telescopic arm 1.2 to perform telescopic movement, the first-level telescopic arm 1.2 can also drive the subsequent telescopic arms of each level to perform telescopic movement. Therefore, the telescopic arms of each level can achieve simultaneous telescopic movement, and the telescopic speed is greatly improved.

[0030] Embodiment 2, as Figure 1-3 As shown, the multi-section column lifting mechanism of a mobile lighting vehicle comprises a plurality of telescopic arms that are telescopically extended step by step and slidably connected. A group of transmission mechanisms are respectively installed on each group of telescopic arms. The transmission mechanisms are used to transmit the telescopic movement of the telescopic arms at any level to the telescopic arms at the next level. The telescopic arms at the bottom level are the first-level telescopic arms 1.2. The first-level telescopic arms 1.2 are telescopically and slidably connected to the bottom-level primary fixed arms 1.1. The bottom-level primary fixed arms 1.1 are installed with a lifting drive mechanism for driving the first-level telescopic arms 1.2 to perform axial movement relative to the bottom-level primary fixed arms 1.1.

[0031] Furthermore, the lifting drive mechanism includes a manual winch 2.1 installed on the outer wall of the bottom primary fixed section arm 1.1, and a steel wire rope A2.3 is wound on the manual winch 2.1. A right reversing pulley A2.2 and a left reversing pulley A2.4 are respectively arranged on both sides of the top of the bottom primary fixed section arm 1.1. A section arm bottom reversing pulley A2.5 is rotatably installed at the bottom of the first-stage telescopic section arm 1.2. The rope end of the steel wire rope A2.3 passes through the left reversing pulley A2.4, the section arm bottom reversing pulley A2.5, and the right reversing pulley A2.2 in turn and is fixed on the outer wall of the bottom primary fixed section arm 1.1.

[0032] Furthermore, a first wheel frame and a second wheel frame are respectively provided on the outer wall at the top of the bottom primary fixed section arm 1.1, the right reversing pulley A2.2 is rotatably installed on the top of the first wheel frame, the rope end of the wire rope A2.3 is fixed on the first wheel frame below the right reversing pulley A2.2, the left reversing pulley A2.4 is rotatably installed on the second wheel frame, the manual winch 2.1 is installed below the second wheel frame, and a wire rope through hole A for the wire rope A2.3 to pass through is respectively provided on the bottom primary fixed section arm 1.1 on the inner side of the right reversing pulley A2.2 and the left reversing pulley A2.4, and the wire rope A2.3 enters the bottom primary fixed section arm 1.1 from the wire rope through hole A.

[0033] Further, the telescopic boom comprises a first-stage telescopic boom 1.2, a second-stage telescopic boom 1.3, a third-stage telescopic boom 1.4, a fourth-stage telescopic boom 1.5, a fifth-stage telescopic boom 1.6 and a sixth-stage telescopic boom 1.7 which are telescopically connected step by step and slidably matched, a first transmission mechanism is installed on the upper part of the first-stage telescopic boom 1.2, the first transmission mechanism is used to transmit the telescopic movement of the first-stage telescopic boom 1.2 to the second-stage telescopic boom 1.3, a second transmission mechanism is installed on the upper part of the second-stage telescopic boom 1.3, the second transmission mechanism is used to transmit the telescopic movement of the second-stage telescopic boom 1.3 to the third-stage telescopic boom 1.4, a third transmission mechanism is installed on the upper part of the third-stage telescopic boom 1.4, the third transmission mechanism is used to transmit the telescopic movement of the third-stage telescopic boom 1. The telescopic movement of the arm 1.4 is transmitted to the fourth-stage telescopic joint arm 1.5, and a fourth transmission mechanism is installed on the upper part of the fourth-stage telescopic joint arm 1.5. The fourth transmission mechanism is used to transmit the telescopic movement of the fourth-stage telescopic joint arm 1.5 to the fifth-stage telescopic joint arm 1.6. A fifth transmission mechanism is installed on the upper part of the fifth-stage telescopic joint arm 1.6. The fifth transmission mechanism is used to transmit the telescopic movement of the fifth-stage telescopic joint arm 1.6 to the sixth-stage telescopic joint arm 1.7. The sixth-stage telescopic joint arm 1.7 is telescopically and slidably connected to the fifth-stage telescopic joint arm 1.6. The telescopic direction of the first-stage telescopic joint arm 1.2, the second-stage telescopic joint arm 1.3, the third-stage telescopic joint arm 1.4, the fourth-stage telescopic joint arm 1.5, the fifth-stage telescopic joint arm 1.6 and the sixth-stage telescopic joint arm 1.7 is a vertical direction.

[0034] The first telescopic boom 1.2 comprises a hollow rectangular tubular structure, a nylon stop plate 3.2 is installed at the top opening of the first telescopic boom 1.2 to slide with the outer wall of the second telescopic boom 1.3, and a nylon liner 3.1 is installed at the front and rear side plates at the bottom of the first telescopic boom 1.2 to slide with the inner wall of the bottom primary fixed boom 1.1. The displacement of the multi-section column in the front, back, left and right directions can be limited, and the nylon material can effectively reduce friction.

[0035] Furthermore, the first-stage telescopic boom 1.2 and the second-stage telescopic boom 1.3 have the same structure.

[0036] Furthermore, the first transmission mechanism includes a steel wire rope B4.6, and the right side reversing pulley B4.1 and the left side reversing pulley B4.2 are rotatably installed on both sides of the top of the first-stage telescopic boom 1.2 through the third wheel frame and the fourth wheel frame, respectively; the inner bottom of the second-stage telescopic boom 1.3 is rotatably installed with the boom bottom reversing pulley B4.3; the side panels of the second-stage telescopic boom 1.3 on both sides of the boom bottom reversing pulley B4.3 are respectively provided with a steel wire rope through hole D4.4 for the steel wire rope B4.6 to pass through; the two groups of steel wire rope through holes D4.4 are respectively rotatably installed with an auxiliary reversing wheel B4.5 and an auxiliary reversing wheel A; one end of the steel wire rope B4.6 is fixed on the first wheel frame, and the other end is fixed on the second wheel frame after passing through the right side reversing pulley B4.1, the auxiliary reversing wheel A, the boom bottom reversing pulley B4.3, the auxiliary reversing wheel B4.5, and the left side reversing pulley B4.2 in sequence.

[0037] Furthermore, a wire rope through hole D for the wire rope B4.6 to pass through is respectively provided on the first-stage telescopic boom 1.2 inside the right reversing pulley B4.1 and the left reversing pulley B4.2, and the wire rope B4.6 enters the first-stage telescopic boom 1.2 from the wire rope through hole D.

[0038] Furthermore, a wire rope through hole C for the wire rope A2.3 to pass through is respectively provided on the side panels of the first-stage telescopic boom 1.2 on both sides of the reversing pulley A2.5 at the bottom of the boom, and an auxiliary reversing wheel D and an auxiliary reversing wheel C are respectively rotatably installed in the two groups of wire rope through holes C. The wire rope A2.3 successively passes around the auxiliary reversing wheel D, the reversing pulley A2.5 at the bottom of the boom, and the auxiliary reversing wheel C, and the wire rope A2.3 enters the bottom of the first-stage telescopic boom 1.2 from the wire rope through hole C.

[0039] Furthermore, the first transmission mechanism, the second transmission mechanism, the third transmission mechanism, the fourth transmission mechanism and the fifth transmission mechanism have the same structure, the first-stage telescopic arm 1.2, the second-stage telescopic arm 1.3, the third-stage telescopic arm 1.4, the fourth-stage telescopic arm 1.5, the fifth-stage telescopic arm 1.6 and the sixth-stage telescopic arm 1.7 have the same structure, and are thin-walled square tubes together with the bottom primary fixed arm 1.1.

[0040] Furthermore, the above-mentioned reversing wheels all have wheel grooves.

[0041] The reversing pulley A2.5 and the reversing pulley B4.3 at the bottom of the boom are equivalent to movable pulleys, and the right reversing pulley A2.2, the left reversing pulley A2.4, the right reversing pulley B4.1, the left reversing pulley B4.2, etc. are equivalent to static pulleys. The user operates the manual winch 2.1 to rotate forward. After the wire rope A2.3 is retracted by the manual winch 2.1, the wire rope A2.3 cooperates with the reversing pulley A2.5 at the bottom of the boom to extend the first-stage telescopic boom 1.2 relative to the bottom primary fixed boom 1.1. During the lifting of the first-stage telescopic boom 1.2, the first-stage telescopic boom 1.2 extends the second-stage telescopic boom 1.3 through the first transmission mechanism, and so on, to complete the full extension of the telescopic boom;

[0042] The user operates the manual winch 2.1 to reverse, and the wire rope A2.3 is released by the manual winch 2.1. As the release progresses, the multi-stage telescopic arms retract under their own weight, and so on, the telescopic arms are fully retracted to achieve vertical lifting of the column. The telescopic arms designed in the utility model are provided with pulley blocks on both sides and the bottom, so that the force is evenly applied when the column is lifted or lowered.

[0043] The multi-section column lifting mechanism of the mobile lighting vehicle described in the utility model, the transmission mechanism is used to transmit the telescopic movement of the telescopic arm of any level to the telescopic arm of the next level, and through the power transmission effect of each transmission mechanism on the lifting drive mechanism, when the lifting drive mechanism drives the first-level telescopic arm to perform telescopic movement, the first-level telescopic arm can simultaneously drive the subsequent telescopic arms of each level to perform telescopic movement, so that the telescopic arms of each level can achieve simultaneous telescopic movement, and the telescopic speed is greatly improved.

[0044] The multi-section column lifting mechanism of the mobile lighting vehicle described in the utility model and the stable sliding relationship between the telescopic section arms can effectively avoid the column from tilting after being raised, thereby ensuring the stability of the equipment. In addition, the reasonable arrangement of the movable pulley and the static pulley can achieve the purpose of saving more labor.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

[0046] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A multi-section column lifting mechanism for a mobile lighting vehicle, characterized in that: The invention comprises a plurality of telescopic joint arms which are telescopically connected in stages and slidably matched, each group of telescopic joint arms being respectively provided with a group of transmission mechanisms, the transmission mechanisms being used to transmit the telescopic movement of the telescopic joint arms at any stage to the telescopic joint arms at the next stage, the telescopic joint arms at the bottom stage being the first-stage telescopic joint arms (1.2), the first-stage telescopic joint arms (1.2) being telescopically and slidably connected to the bottom-stage primary fixed joint arms (1.1), the bottom-stage primary fixed joint arms (1.1) being provided with a lifting and lowering driving mechanism for driving the first-stage telescopic joint arms (1.2) to perform axial movement relative to the bottom-stage primary fixed joint arms (1.1).

2. The multi-section column lifting mechanism of the mobile lighting vehicle according to claim 1 is characterized in that: The lifting drive mechanism comprises a manual winch (2.1) mounted on the outer wall of a bottom primary fixed boom (1.1), a steel wire rope A (2.3) being wound around the manual winch (2.1), a right reversing pulley A (2.2) and a left reversing pulley A (2.4) being respectively arranged on both sides of the top of the bottom primary fixed boom (1.1), a boom bottom reversing pulley A (2.5) being rotatably mounted at the bottom of the first-stage telescopic boom (1.2), and the rope end of the steel wire rope A (2.3) is passed through the left reversing pulley A (2.4), the boom bottom reversing pulley A (2.5), and the right reversing pulley A (2.2) in sequence and is fixed to the outer wall of the bottom primary fixed boom (1.1).

3. The multi-section column lifting mechanism of the mobile lighting vehicle according to claim 2 is characterized in that: The outer wall at the top of the bottom primary fixed section arm (1.1) is provided with a first wheel frame and a second wheel frame respectively; the right reversing pulley A (2.2) is rotatably mounted on the top of the first wheel frame; the rope end of the wire rope A (2.3) is fixed on the first wheel frame below the right reversing pulley A (2.2); the left reversing pulley A (2.4) is rotatably mounted on the second wheel frame; the manual winch (2.1) is mounted below the second wheel frame; and a wire rope through hole A for the wire rope A (2.3) to pass through is respectively provided on the bottom primary fixed section arm (1.1) inside the right reversing pulley A (2.2) and the left reversing pulley A (2.4); the wire rope A (2.3) enters the bottom primary fixed section arm (1.1) from the wire rope through hole A.

4. The multi-section column lifting mechanism of the mobile lighting vehicle according to claim 3 is characterized in that: The telescopic boom comprises a first-stage telescopic boom (1.2), a second-stage telescopic boom (1.3), a third-stage telescopic boom (1.4), a fourth-stage telescopic boom (1.5), a fifth-stage telescopic boom (1.6) and a sixth-stage telescopic boom (1.7) which are telescopically connected step by step and in a sliding manner; a first transmission mechanism is installed on the upper part of the first-stage telescopic boom (1.2), the first transmission mechanism is used to transmit the telescopic movement of the first-stage telescopic boom (1.2) to the second-stage telescopic boom (1.3); a second transmission mechanism is installed on the upper part of the second-stage telescopic boom (1.3), the second transmission mechanism is used to transmit the telescopic movement of the second-stage telescopic boom (1.3) to the third-stage telescopic boom (1.4); a third transmission mechanism is installed on the upper part of the third-stage telescopic boom (1.4), the third transmission mechanism is used to transmit the telescopic movement of the third-stage telescopic boom (1.4) to the third-stage telescopic boom (1.4); The telescopic movement of the fourth-stage telescopic joint arm (1.5) is transmitted to the fourth-stage telescopic joint arm (1.5); a fourth transmission mechanism is installed on the upper part of the fourth-stage telescopic joint arm (1.5); the fourth transmission mechanism is used to transmit the telescopic movement of the fourth-stage telescopic joint arm (1.5) to the fifth-stage telescopic joint arm (1.6); a fifth transmission mechanism is installed on the upper part of the fifth-stage telescopic joint arm (1.6); the fifth transmission mechanism is used to transmit the telescopic movement of the fifth-stage telescopic joint arm (1.6) to the sixth-stage telescopic joint arm (1.7); the sixth-stage telescopic joint arm (1.7) is telescopically and slidably connected to the fifth-stage telescopic joint arm (1.6); the telescopic direction of the first-stage telescopic joint arm (1.2), the second-stage telescopic joint arm (1.3), the third-stage telescopic joint arm (1.4), the fourth-stage telescopic joint arm (1.5), the fifth-stage telescopic joint arm (1.6) and the sixth-stage telescopic joint arm (1.7) is a vertical direction.

5. The multi-section column lifting mechanism of the mobile lighting vehicle according to claim 4 is characterized in that: The first-stage telescopic boom (1.2) comprises a hollow rectangular tubular structure, a nylon limit plate (3.2) slidably matched with the outer wall of the second-stage telescopic boom (1.3) is installed at the top opening of the first-stage telescopic boom (1.2), and a nylon liner (3.1) slidably matched with the inner wall of the bottom primary fixed boom (1.1) is arranged on the front and rear side plates at the bottom of the first-stage telescopic boom (1.2).

6. The multi-section column lifting mechanism of the mobile lighting vehicle according to claim 5 is characterized in that: The first transmission mechanism comprises a steel wire rope B (4.6); a right reversing pulley B (4.1) and a left reversing pulley B (4.2) are rotatably mounted on both sides of the top of the first-stage telescopic boom (1.2) through a third wheel frame and a fourth wheel frame, respectively; a boom bottom reversing pulley B (4.3) is rotatably mounted on the inner bottom of the second-stage telescopic boom (1.3); and a steel wire rope is provided on the side panels of the second-stage telescopic boom (1.3) on both sides of the boom bottom reversing pulley B (4.3). The steel wire rope through-hole D (4.4) through which the rope B (4.6) passes is respectively rotatably mounted with an auxiliary reversing wheel B (4.5) and an auxiliary reversing wheel A in the two sets of steel wire rope through-holes D (4.4). One end of the steel wire rope B (4.6) is fixed to the first wheel frame, and the other end is fixed to the second wheel frame after passing through the right reversing pulley B (4.1), the auxiliary reversing wheel A, the reversing pulley B (4.3) at the bottom of the boom, the auxiliary reversing wheel B (4.5), and the left reversing pulley B (4.2) in sequence.

7. The multi-section column lifting mechanism of the mobile lighting vehicle according to claim 6 is characterized in that: A wire rope through hole D for a wire rope B (4.6) to pass through is respectively provided on the first-stage telescopic boom (1.2) inside the right reversing pulley B (4.1) and the left reversing pulley B (4.2). The wire rope B (4.6) enters the first-stage telescopic boom (1.2) from the wire rope through hole D.

8. The multi-section column lifting mechanism of the mobile lighting vehicle according to claim 7 is characterized in that: A wire rope through hole C for the wire rope A (2.3) to pass through is respectively provided on the side plates of the first-stage telescopic boom (1.2) on both sides of the boom bottom reversing pulley A (2.5), and an auxiliary reversing wheel D and an auxiliary reversing wheel C are rotatably installed in the two sets of wire rope through holes C, respectively. The wire rope A (2.3) passes through the auxiliary reversing wheel D, the boom bottom reversing pulley A (2.5), and the auxiliary reversing wheel C in sequence, and the wire rope A (2.3) enters the bottom of the first-stage telescopic boom (1.2) from the wire rope through hole C.

9. The multi-section column lifting mechanism of the mobile lighting vehicle according to claim 8, characterized in that: The first transmission mechanism, the second transmission mechanism, the third transmission mechanism, the fourth transmission mechanism and the fifth transmission mechanism are all of the same structure, the first-stage telescopic boom (1.2), the second-stage telescopic boom (1.3), the third-stage telescopic boom (1.4), the fourth-stage telescopic boom (1.5), the fifth-stage telescopic boom (1.6) and the sixth-stage telescopic boom (1.7) are all of the same structure, and are thin-walled square tubes together with the bottom primary fixed boom (1.1).

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