Electromechanical movable adjustable scaffold trolley for subway tunnel

Abstract

The utility model belongs to the technical field of tunnel construction and aims to solve the problems that an existing scaffold vehicle is low in stability and a scaffold cannot be replaced. According to the electromechanical movement adjustable scaffold trolley for the subway tunnel, a fixed sleeve is installed at the center position of the bottom of a plate-shaped trolley body, and telescopic arms of two telescopic structures are driven by corresponding servo motors to get close to or get away from the center position of the fixed sleeve; the threaded lifting and pressing structure is located at the end of the telescopic arm and can ascend or descend relative to the telescopic arm. The bottom end of the telescopic cylinder column is fixed to the upper end of the plate-shaped vehicle body, the connecting arm is located on one side of the upper end of the telescopic cylinder column, the outer end of the connecting arm is connected with a bracket, and a scaffold quick-release mechanism is arranged at the bottom of the bracket. The scaffold pressing mechanism is arranged on the side, away from the connecting arm, of the scaffold. According to the device, the toppling condition can be avoided, the scaffold can be conveniently replaced according to the actual operation condition, and the operation platform can be pressed and fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and in particular relates to an electromechanical movable and adjustable scaffolding vehicle for a subway tunnel. Background Art

[0002] Scaffolding is a working platform set up to ensure the smooth progress of each construction process. The mobile and adjustable scaffolding vehicles used in the existing subway tunnel construction process are easy to move and have lifting functions. However, after the scaffolding vehicle is raised, the center of the equipment becomes higher and the stability of the equipment is reduced, which makes it easy to tip over;

[0003] At the same time, the working platform and scaffolding on the top of the existing mobile adjustable scaffolding vehicle are fixedly installed, and it is impossible to replace the working platform of different areas and sizes according to the construction requirements and the number of construction workers. The practicality is poor, and the installation stability of the working platform on the top of the mobile adjustable scaffolding vehicle is poor. It is difficult to ensure the stable installation of the replaced working platform, and the practicality of the equipment is low. Utility Model Content

[0004] In order to solve at least one of the above technical problems existing in the prior art, the utility model provides an electromechanical movable and adjustable scaffolding vehicle for a subway tunnel.

[0005] The utility model is implemented by the following technical scheme: a metro tunnel electromechanical movable adjustable scaffolding vehicle, comprising a plate-shaped vehicle body, a telescopic cylinder column, a connecting arm, a bracket, a scaffolding, a scaffolding pressing mechanism, a scaffolding quick-release mechanism and a bottom telescopic support mechanism;

[0006] The bottom telescopic support mechanism includes a fixed sleeve, two telescopic structures and two threaded lifting and clamping structures; the fixed sleeve is installed at the center of the bottom of the plate-shaped vehicle body, and the telescopic structure includes a telescopic arm, a gear, a rack and a servo motor; the telescopic arms of the two telescopic structures are slidably connected to the fixed sleeve, the rack is fixed at the outer wall of the telescopic arm, and the rack is meshed with a gear driven by the servo motor, and the telescopic arms of the two telescopic structures are respectively driven by the corresponding servo motors to move closer to or farther from the center of the fixed sleeve; the threaded lifting and clamping structure is located at the end of the telescopic arm and can rise or fall relative to the telescopic arm;

[0007] The bottom end of the telescopic cylinder column is fixed to the upper end of the plate-shaped vehicle body, the connecting arm is located on one side of the upper end of the telescopic cylinder column, the outer end of the connecting arm is connected to a bracket, and a scaffolding quick-release mechanism is arranged at the bottom of the bracket; the scaffolding quick-release mechanism comprises a fixed sleeve, a plug-in arm and a locking structure, a plurality of fixed sleeves are installed at the bottom end of the bracket, the plug-in arm is connected to the bottom of the scaffolding and the lower end passes through the bracket and is plugged into the fixed sleeve, and the plug-in arm can be locked in the fixed sleeve through the locking structure;

[0008] The scaffolding clamping mechanism is arranged on the side of the scaffolding away from the connecting arm, and the scaffolding clamping mechanism includes a mounting plate, a driving cylinder, a pressing block and a rotating structure; the mounting plate is fixed at the center of the side of the bracket away from the connecting arm, the driving cylinder is arranged on the mounting plate and can drive the rotating structure to drive the pressing block to lift or press down to achieve auxiliary clamping or unlocking of the bracket.

[0009] Preferably, the rotating structure includes a movable rod, an I-shaped head, a connecting head, a pressure rod, a fixed bar, a fixed head I, a fixed head II, a fixed head III and a fixed rod; the output end of the driving cylinder movably passes through the mounting plate and is connected to the movable rod, an I-shaped head is installed on the top of the movable rod, the top of the I-shaped head is rotatably connected to the fixed head III, and the top of the fixed head III is installed with a pressure rod; a fixed rod is installed at the bottom of the end of the pressure rod away from the fixed head III, a pressure block is installed at the bottom of the fixed rod, a rubber shock-absorbing block is installed at the bottom of the pressure block, and anti-slip grooves are evenly provided at the bottom of the rubber shock-absorbing block; a fixed head II is installed at the bottom center of the pressure rod, the bottom of the fixed head II is rotatably connected to the connecting head, the bottom of the connecting head is rotatably connected to the fixed head I, a fixed bar is installed at the bottom of the fixed head I, and the bottom of the fixed bar is fixedly connected to the top center of the mounting plate.

[0010] Preferably, the locking structure includes a handwheel I, a threaded block I, a threaded rod I, a limit block and a guide strip; four fixed sleeves are symmetrically installed at the bottom of the bracket and four guide strips are arranged at the four inner corners of the fixed sleeve, the plug-in arm is slidably connected to the guide strip, and the top of the plug-in arm is fixedly connected to the four central corners of the bottom of the scaffold; a threaded block I is installed on the outer wall of the fixed sleeve, the threaded rod I is threadedly connected to the threaded block I and the threaded rod I movably passes through the fixed sleeve and the plug-in arm and is limited by the limit block installed on the outer wall of the fixed sleeve, and a handwheel I is installed on the end of the threaded rod I away from the limit block.

[0011] Preferably, an installation box is installed at the center of one side of the fixed sleeve, and two servo motors are symmetrically installed on both sides of the bottom of the installation box. The output end of the servo motor movably passes through the bottom of the installation box and is connected to the gear. One side of the installation box is symmetrically provided with a notch for avoiding the gear.

[0012] Preferably, a guide rod is provided inside the fixed sleeve, and a limit groove for sliding fit of the guide rod is provided on the telescopic arm; the two telescopic arms are respectively located on both sides of the center of the fixed sleeve.

[0013] Preferably, the threaded lifting and clamping structure includes a threaded block II, a threaded rod II, a handwheel II and a cushion block, the threaded block II is installed at the upper end of the fixed sleeve, the threaded rod II is threadedly connected to the threaded block II and the threaded rod II movably passes through the telescopic arm, the upper end of the threaded rod II is installed with a handwheel II, and the bottom end of the threaded rod II is installed with a cushion block.

[0014] Preferably, a working platform is installed on the upper end of the bottom plate of the bracket, a scaffold is installed on the upper end of the working platform, a plug-in arm is fixedly connected to the bottom of the working platform, and an entry and exit door is hinged on one side of the scaffold.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The device is installed through the bottom telescopic support mechanism, and when the scaffolding vehicle is raised, the telescopic arm is extended to improve the installation stability of the equipment and avoid tipping; the installation of the scaffolding quick-disassembly mechanism can realize the installation and replacement of the working platform and the scaffolding body, which is convenient for replacing scaffolding bodies of different sizes according to actual working conditions and the number of workers; the installation of the scaffolding clamping mechanism can realize the clamping and fixing of the working platform, improve the installation firmness of the working platform and the scaffolding body, and do not need multiple bolts for fixing, so the installation and disassembly are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of this embodiment;

[0019] Figure 2 It is a front view of the overall structure of this embodiment;

[0020] Figure 3 is a three-dimensional diagram of the scaffold pressing mechanism of this embodiment;

[0021] Figure 4 is a front view of the scaffold pressing mechanism of this embodiment;

[0022] Figure 5 is a side view of the overall structure of this embodiment;

[0023] Figure 6 is a front cross-sectional view of the scaffolding quick-release mechanism of this embodiment;

[0024] Figure 7 is a top view of the scaffold quick-release mechanism of this embodiment;

[0025] Figure 8 is a three-dimensional diagram of the bottom telescopic support mechanism of this embodiment;

[0026] Fig. 9 It is a top cross-sectional view of the bottom telescopic support mechanism of this embodiment.

[0027] In the figure: 1-plate body; 2-telescopic cylinder column; 3-connecting arm; 4-bracket; 5-scaffolding; 601-mounting plate; 602-driving cylinder; 603-pressing block; 604-movable rod; 605-I-shaped head; 606-connecting head; 607-pressing rod; 608-fixing strip; 609-fixing head I; 610-fixing head II; 611-fixing head III; 612-fixing rod; 701-fixing sleeve; 702-plug arm; 703-hand Wheel I; 704-threaded block I; 705-threaded rod I; 706-limiting block; 707-guide bar; 801-fixed sleeve; 802-telescopic arm; 803-gear; 804-rack; 805-servo motor; 806-installation box; 807-guide rod; 808-limiting groove; 809-threaded block II; 810-threaded rod II; 811-handwheel II; 812-pad; 9-working platform; 10-entry and exit door; 11-fixed seat. DETAILED DESCRIPTION

[0028] Combined with the drawings in the embodiments of the utility model, the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented, so they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0030] The utility model provides an embodiment:

[0031] like Figures 1 to 9 As shown, a metro tunnel electromechanical movable adjustable scaffolding vehicle comprises a plate-shaped vehicle body 1, a telescopic cylinder column 2, a connecting arm 3, a bracket 4, a scaffolding 5, a scaffolding pressing mechanism, a scaffolding quick-release mechanism and a bottom telescopic support mechanism;

[0032] The bottom telescopic support mechanism includes a fixed sleeve 801, two telescopic structures and two threaded lifting and clamping structures; the fixed sleeve 801 is installed at the bottom center of the plate-like vehicle body 1, and the telescopic structure includes a telescopic arm 802, a gear 803, a rack 804 and a servo motor 805; the telescopic arms 802 of the two telescopic structures are both slidably connected with the fixed sleeve 801, the rack 804 is fixed at the outer wall of the telescopic arm 802, and the rack 804 is meshed with a gear 803 driven by the servo motor 805, and the telescopic arms 802 of the two telescopic structures are respectively driven by the corresponding servo motors 805 to achieve approach or distance from the center position of the fixed sleeve 801; the threaded lifting and clamping structure is located at the end of the telescopic arm 802 and can rise or fall relative to the telescopic arm 802;

[0033] The bottom end of the telescopic cylinder column 2 is fixed to the upper end of the plate-shaped vehicle body 1, the connecting arm 3 is located on one side of the upper end of the telescopic cylinder column 2, the outer end of the connecting arm 3 is connected to the bracket 4, and the bottom position of the bracket 4 is provided with a scaffolding quick-release mechanism; the scaffolding quick-release mechanism includes a fixed sleeve 701, a plug-in arm 702 and a locking structure, a plurality of fixed sleeves 701 are installed at the bottom end of the bracket 4, the plug-in arm 702 is connected to the bottom of the scaffold 5 and the lower end passes through the bracket 4 and is plugged into the fixed sleeve 701, and the plug-in arm 702 can be locked in the fixed sleeve 701 through the locking structure;

[0034] The scaffolding clamping mechanism is arranged on the side of the scaffolding 5 away from the connecting arm 3, and the scaffolding clamping mechanism includes a mounting plate 601, a driving cylinder 602, a pressing block 603 and a rotating structure; the mounting plate 601 is fixed at the center of the side of the bracket 4 away from the connecting arm 3, and the driving cylinder 602 is arranged on the mounting plate 601 and can drive the rotating structure to drive the pressing block 603 to lift or press down to achieve auxiliary clamping or unlocking of the bracket 4.

[0035] In this embodiment, a working platform 9 is installed on the upper end of the base plate of the bracket 4, and the scaffolding 5 is installed on the upper end of the working platform 9. The plug-in arm 702 is fixedly connected to the bottom of the working platform 9, and an entry and exit door 10 is hinged on one side of the scaffolding 5; the connecting arm 3 is connected to the lifting cylinder column 2 through the fixed seat 11.

[0036] The rotating structure includes a movable rod 604, an I-shaped head 605, a connecting head 606, a pressure rod 607, a fixing bar 608, a fixing head I609, a fixing head II610, a fixing head III611 and a fixing rod 612; the output end of the driving cylinder 602 movably penetrates the mounting plate 101 and is connected to the movable rod 604, the top of the movable rod 604 is installed with an I-shaped head 605, the top of the I-shaped head 605 is rotatably connected with a fixing head III611, and the top of the fixing head III611 is installed with a pressure rod 607; the pressure rod 607 is away from the fixing head III A fixing rod 612 is installed at the bottom of one end of 611, a pressure block 603 is installed at the bottom end of the fixing rod 612, a rubber shock-absorbing block is installed at the bottom of the pressure block 603, and anti-slip grooves are evenly opened at the bottom of the rubber shock-absorbing block; a fixing head II610 is installed at the bottom center of the pressure rod 607, the bottom of the fixing head II610 is rotatably connected to the connecting head 606, the bottom of the connecting head 606 is rotatably connected to the fixing head I609, the bottom of the fixing head I609 is installed with a fixing strip 608, and the bottom of the fixing strip 608 is fixedly connected to the top center of the mounting plate 601.

[0037] The locking structure includes a handwheel I703, a threaded block I704, a threaded rod I705, a limit block 706 and a guide strip 707; four fixed sleeves 701 are symmetrically installed at the bottom of the bracket 4 and four guide strips 707 are arranged at the four inner corners of the fixed sleeve 701, the plug-in arm 702 is slidably connected with the guide strip 707, and the top of the plug-in arm 702 is connected with the four central corners of the bottom of the scaffolding 5; a threaded block I704 is installed on the outer wall of the fixed sleeve 701, the threaded rod I705 is threadedly connected with the threaded block I704 and the threaded rod I705 movably passes through the fixed sleeve 701 and the plug-in arm 702 and is limited by the limit block 706 installed on the outer wall of the fixed sleeve 701, and a handwheel I703 is installed on the end of the threaded rod I705 away from the limit block 706.

[0038] An installation box 806 is installed at the center of one side of the fixed sleeve 801, and two servo motors 805 are symmetrically installed on both sides of the bottom of the installation box 806. The output end of the servo motor 805 movably passes through the bottom of the installation box 806 and is connected to the gear 803. A notch for avoiding the gear 803 is symmetrically opened on one side of the installation box 806.

[0039] A guide rod 807 is disposed inside the fixed sleeve 801 , and a limit groove 808 is disposed on the telescopic arm 802 , which is slidably matched with the guide rod 807 ; the two telescopic arms 802 are respectively located on both sides of the center of the fixed sleeve 801 .

[0040] The threaded lifting and clamping structure includes a threaded block II809, a threaded rod II810, a handwheel II811 and a cushion block 812. The threaded block II809 is installed at the upper end of the fixed sleeve 801. The threaded rod II810 is threadedly connected to the threaded block II809 and the threaded rod II810 movably passes through the telescopic arm 802. The upper end of the threaded rod II810 is installed with a handwheel II811, and the bottom end of the threaded rod II810 is installed with a cushion block 812.

[0041] Working principle: When using the device, first push the plate-shaped vehicle body 1, and use the rollers at the bottom of the plate-shaped vehicle body 1 to move the device to the designated working position;

[0042] Then, the scaffold 5 is replaced according to the needs, and the hand wheel I703 is rotated to drive the threaded rod I705 to rotate, thereby driving the threaded rod I705 to move in the direction away from the fixed sleeve 701, loosening the plug-in fixation of the plug-in arm 702, and at this time, the plug-in arm 702 is pulled out along the fixed sleeve 701; then, the plug-in arm 702 at the bottom of the working platform 9 that needs to be replaced is plugged into the fixed sleeve 701, and then the hand wheel I703 is rotated in the opposite direction to drive the threaded rod I705 to spirally enter the plug-in arm 702, so as to realize the rapid installation and removal of the plug-in arm 702, and the limit block 706 is used as a limit for the threaded rod I705, and the guide bar 707 is used to maintain the movement direction of the plug-in arm 702;

[0043] When the working platform 9 and the scaffold 5 are replaced, the driving cylinder 602 is turned on, and the output end of the driving cylinder 602 rises, which then drives the movable rod 604 to rise, and then drives the I-shaped head 605 to rise, and then drives the fixed head III611 to rise, and then drives one end of the pressure rod 607 to rise, and then drives one end of the pressure rod 607 to rotate around the fixed head II610, and then drives the other end of the pressure rod 607 to descend, and then drives the fixed rod 612 to descend, and then drives the pressure block 603 to descend, so that the working platform 9 is pressed and fixed by the pressure block 603, and the installation stability of the working platform 9 is improved;

[0044] When the working platform 9 is pressed and fixed, the servo motor 805 is turned on, and the output end of the servo motor 805 starts to rotate, which then drives the gear 803 to rotate, thereby driving the two racks 804 to move away from each other, and then drives the two telescopic arms 802 to move away from each other, so that the two telescopic arms 802 are extended. At this time, the hand wheel II811 is rotated to drive the threaded rod II810 to rotate, thereby driving the threaded block II809 to rotate and move downward, and then drives the pad 812 to rotate and move downward, and then uses the pad 812 to support the equipment, expand the contact area between the equipment and the ground, lower the center of gravity of the equipment, and improve the stability of the equipment installation;

[0045] At this time, the construction workers open the access door 10, enter the working platform 9 and the scaffolding 5, and then open the lifting cylinder column 2. The output end of the lifting cylinder column 2 begins to extend, and then drives the fixed seat 11 to rise, and then drives the connecting arm 3 to rise, and then drives the bracket 4 to rise. At this time, the working platform 9 and the scaffolding 5 are driven to rise, and the workers carry out construction on the subway tunnel on the scaffolding 5.

[0046] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A metro tunnel electromechanical movable adjustable scaffolding vehicle, characterized by: It comprises a plate-shaped vehicle body (1), a telescopic cylinder column (2), a connecting arm (3), a bracket (4), a scaffold (5), a scaffold pressing mechanism, a scaffold quick-release mechanism and a bottom telescopic support mechanism; The bottom telescopic support mechanism comprises a fixed sleeve (801), two telescopic structures and two threaded lifting and pressing structures; the fixed sleeve (801) is installed at the bottom center of the plate-shaped vehicle body (1), and the telescopic structure comprises a telescopic arm (802), a gear (803), a rack (804) and a servo motor (805); the telescopic arms (802) of the two telescopic structures are both slidably connected to the fixed sleeve (801), the rack (804) is fixed to the outer wall of the telescopic arm (802), and the rack (804) is meshed with a gear (803) driven by the servo motor (805), and the telescopic arms (802) of the two telescopic structures are respectively driven by the corresponding servo motor (805) to move closer to or farther from the center of the fixed sleeve (801); the threaded lifting and pressing structure is located at the end of the telescopic arm (802) and can rise or fall relative to the telescopic arm (802); The bottom end of the telescopic cylinder column (2) is fixed to the top end of the plate-shaped vehicle body (1); the connecting arm (3) is located on one side of the top end of the telescopic cylinder column (2); the outer end of the connecting arm (3) is connected to a bracket (4); a scaffolding quick-release mechanism is arranged at the bottom of the bracket (4); the scaffolding quick-release mechanism comprises a fixing sleeve (701), a plug-in arm (702) and a locking structure; a plurality of fixing sleeves (701) are installed at the bottom end of the bracket (4); the plug-in arm (702) is connected to the bottom of the scaffolding (5) and the lower end thereof passes through the bracket (4) and is plugged into the fixing sleeve (701); the plug-in arm (702) can be locked in the fixing sleeve (701) by the locking structure; The scaffolding clamping mechanism is arranged on a side of the scaffolding (5) away from the connecting arm (3), and the scaffolding clamping mechanism comprises a mounting plate (601), a driving cylinder (602), a pressing block (603) and a rotating structure; the mounting plate (601) is fixed at the center of a side of the bracket (4) away from the connecting arm (3), and the driving cylinder (602) is arranged on the mounting plate (601) and can drive the rotating structure to drive the pressing block (603) to lift up or press down to realize auxiliary clamping or unlocking of the bracket (4).

2. The metro tunnel electromechanical movable adjustable scaffolding vehicle according to claim 1 is characterized by: The rotating structure comprises a movable rod (604), an I-shaped head (605), a connecting head (606), a pressure rod (607), a fixing strip (608), a fixing head I (609), a fixing head II (610), a fixing head III (611) and a fixing rod (612); the output end of the driving cylinder (602) movably penetrates the mounting plate (601) and is connected to the movable rod (604); the top of the movable rod (604) is provided with an I-shaped head (605); the top of the I-shaped head (605) is rotatably connected to the fixing head III (611); the top of the fixing head III (611) is provided with a pressure rod (607); the pressure rod (607) is away from the fixing A fixing rod (612) is installed at the bottom of one end of the head III (611), a pressure block (603) is installed at the bottom end of the fixing rod (612), a rubber shock-absorbing block is installed at the bottom of the pressure block (603), and anti-skid grooves are evenly arranged at the bottom of the rubber shock-absorbing block; a fixing head II (610) is installed at the bottom center of the pressure rod (607), the bottom of the fixing head II (610) is rotatably connected to a connecting head (606), the bottom of the connecting head (606) is rotatably connected to a fixing head I (609), a fixing strip (608) is installed at the bottom of the fixing head I (609), and the bottom of the fixing strip (608) is fixedly connected to the top center of the mounting plate (601).

3. The metro tunnel electromechanical movable adjustable scaffolding vehicle according to claim 1 is characterized by: The locking structure comprises a hand wheel I (703), a threaded block I (704), a threaded rod I (705), a limit block (706) and a guide bar (707); four fixed sleeves (701) are symmetrically installed at the bottom of the bracket (4) and four guide bars (707) are arranged at the four inner corners of the fixed sleeves (701); the plug-in arm (702) is slidably connected to the guide bar (707); the top of the plug-in arm (702) is connected to the bottom of the scaffold (5); The four corners of the center are connected; a threaded block I (704) is installed on the outer wall of the fixed sleeve (701), a threaded rod I (705) is threadedly connected to the threaded block I (704), and the threaded rod I (705) movably passes through the fixed sleeve (701) and the plug-in arm (702) and is limited by a limit block (706) installed on the outer wall of the fixed sleeve (701), and a hand wheel I (703) is installed at one end of the threaded rod I (705) away from the limit block (706).

4. The metro tunnel electromechanical movable adjustable scaffolding vehicle according to claim 1 is characterized by: An installation box (806) is installed at the center of one side of the fixed sleeve (801), and two servo motors (805) are symmetrically installed on both sides of the bottom of the installation box (806). The output end of the servo motor (805) movably passes through the bottom of the installation box (806) and is connected to the gear (803). One side of the installation box (806) is symmetrically provided with a notch for avoiding the gear (803).

5. The metro tunnel electromechanical movable adjustable scaffolding vehicle according to claim 4 is characterized by: A guide rod (807) is arranged inside the fixed sleeve (801), and a limit groove (808) for slidingly matching the guide rod (807) is arranged on the telescopic arm (802); the two telescopic arms (802) are respectively located on both sides of the center of the fixed sleeve (801).

6. The metro tunnel electromechanical movable adjustable scaffolding vehicle according to claim 1, characterized in that: The threaded lifting and clamping structure comprises a threaded block II (809), a threaded rod II (810), a hand wheel II (811) and a cushion block (812), wherein the threaded block II (809) is installed at the upper end of the fixed sleeve (801), the threaded rod II (810) is threadedly connected to the threaded block II (809) and the threaded rod II (810) movably passes through the telescopic arm (802), the upper end of the threaded rod II (810) is installed with a hand wheel II (811), and the lower end of the threaded rod II (810) is installed with a cushion block (812).

7. The metro tunnel electromechanical movable adjustable scaffolding vehicle according to claim 1 is characterized by: A working platform (9) is installed on the upper end of the bottom plate of the bracket (4), a scaffold (5) is installed on the upper end of the working platform (9), a plug-in arm (702) is fixedly connected to the bottom of the working platform (9), and an entry and exit door (10) is hingedly connected to one side of the scaffold (5); the connecting arm (3) is connected to the lifting cylinder column (2) through a fixing seat (11).

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