Guardrail dismounting and replacing device for road maintenance

Abstract

The invention discloses a guardrail dismounting and replacing device for road maintenance, and relates to the technical field of road guardrail installation. In order to solve the problem that when a guardrail cannot be dismantled, the dismantled guardrail and a new guardrail needing to be installed can be installed at the same time. The device specifically comprises a transport vehicle, second electric sliding rails are fixed to the outer walls of the two sides of the transport vehicle correspondingly, movable frames are slidably connected to the inner walls of the second electric sliding rails, first electric sliding rails are fixed to the outer walls of the movable frames, electric push rods are slidably connected to the inner walls of the first electric sliding rails, and movable frames are rotatably connected to output shafts of the electric push rods; arc-shaped elastic plates are fixed to the inner walls of the two sides of the movable frame correspondingly. After new guardrails in the transport vehicle are all installed, the transport vehicle can be filled with dismantled old guardrails, then a worker can push the transport vehicle to a corresponding position, the dismantled old guardrails are recycled, meanwhile, the new guardrails are loaded into the transport vehicle, and the dismantling and replacing efficiency of the guardrails is improved.

Description

Technical Field

[0001] The invention relates to the technical field of road guardrail installation, and in particular to a guardrail disassembly and replacement device for highway maintenance. Background Art

[0002] Guardrails installed in the middle and on both sides of the road can prevent out-of-control vehicles from running off the road and causing widespread damage. For safety reasons, guardrails are usually installed on roads to enhance the physical and psychological sense of security and comfort for drivers and passengers.

[0003] After searching, the Chinese patent application number CN202110072905.X discloses a road isolation guardrail installation device, including a support plate, a roller, and a roller is symmetrically rotatably provided on one side of the bottom of the support plate; a first universal wheel, and a first universal wheel is symmetrically rotatably provided on the other side of the support plate; however, the above technical solution can only support, fix and limit the guardrail to be installed, and cannot effectively assist the staff to dismantle the old guardrail. At the same time, it is impossible to transport the dismantled guardrail and the new guardrail to be installed, resulting in the problem of low efficiency of guardrail removal and replacement. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a guardrail replacement device for highway maintenance.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A guardrail replacement device for highway maintenance comprises a transport vehicle, second electric slide rails are respectively fixed to the outer walls on both sides of the transport vehicle, a movable frame is slidably connected to the inner wall of the second electric slide rail, a first electric slide rail is fixed to the outer wall of the movable frame, an electric push rod is slidably connected to the inner wall of the first electric slide rail, an output shaft of the electric push rod is rotatably connected to the movable frame, arc spring plates are respectively fixed to the inner walls on both sides of the movable frame, one end of the arc spring plate is slidably connected to the inner wall of the movable frame, a pressing mechanism is provided on the outer wall of the movable frame and the arc spring plate, and a rotating mechanism is provided on the outer wall of the movable frame and the electric push rod;

[0007] A protective shell is fixed to the inner wall of the transport vehicle, the inner wall of the protective shell is rotatably connected to a conveyor belt, the inner wall of the conveyor belt is transmission-connected to a pulley, a second bevel gear is fixed to the outer wall of the pulley, a third support seat is fixed to the outer wall of the protective shell, the outer wall of the third support seat is rotatably connected to a first bevel gear, the first bevel gear is meshed with the second bevel gear, and a transmission mechanism is provided on the inner wall of the transport vehicle and the outer wall of the movable frame.

[0008] Preferably, a plurality of guide plates are fixed to the inner wall of the transport vehicle, a railing is slidably connected to the outer wall of the guide plate, and a column is fixed to the outer wall of the railing by screws.

[0009] Furthermore: a plurality of limit baffles are fixed on the outer wall of the conveyor belt.

[0010] Further preferably, a control panel is fixed to the outer wall of the transport vehicle, and the second electric slide rail, the first electric slide rail and the electric push rod are electrically connected to the control panel respectively.

[0011] As a preferred embodiment of the present invention: a friction pad and a group of clamping blocks are fixed to the outer wall of the arc-shaped spring plate.

[0012] As a further preferred embodiment of the present invention: the extrusion mechanism includes an airbag, a movable plate, an electric-controlled air valve, a connecting valve and a cylinder, the airbag is fixed on the top inner wall of the movable frame, the movable plate is fixed on the bottom outer wall of the airbag, the electric-controlled air valve is arranged on the bottom outer wall of the airbag, the electric-controlled air valve runs through the outer wall of one side of the movable plate, the cylinder is respectively fixed on the inner walls on both sides of the movable frame, the connecting valve is arranged on the input end of the cylinder, and the electric-controlled air valve and the connecting valve are connected through an air supply pipeline.

[0013] As a further solution of the present invention: the rotating mechanism includes an external thread sleeve and an arcuate internal thread sheet, the external thread sleeve is fixed on the outer wall of the electric push rod, the arcuate internal thread sheet is fixed on the top outer wall of the movable frame, and the arcuate internal thread sheet and the external thread sleeve are meshed and connected.

[0014] On the basis of the above scheme: the transmission mechanism includes a first support seat, a rotating shaft, a transmission gear, a transmission shaft, a second support seat and a rack plate, the rack plate is fixed on an outer wall of one side of the movable frame, the first support seat is fixed on an inner wall of one side of the transport vehicle, the rotating shaft is rotatably connected to the inner wall of the first support seat, the transmission gear is fixed on the outer wall of the rotating shaft, the second support seat is fixed on the outer wall of the protective shell, the transmission shaft is rotatably connected to the inner wall of the second support seat, the transmission shaft is respectively connected to the rotating shaft and the first bevel gear through a transmission chain, and the transmission gear is meshed with the rack plate.

[0015] Based on the above scheme, it is preferred that: a metal block is fixed to the outer wall of the movable frame, a group of conical blocks is fixed to the outer wall of the electric push rod output shaft, the angle between the two conical blocks is a right angle, and a magnetic block is arranged on the outer wall of the conical block.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention can help the staff to quickly dismantle and load the old guardrail, and pull out and install the new guardrail at the same time. The conveyor belt can rotate forward a corresponding distance each time the movable frame pulls out a new guardrail to be installed, so that the new guardrail on the top of the conveyor belt moves forward one grid to replace the guardrail that has just been removed for installation. At the same time, a grid of the conveyor belt is left at the other end of the transport vehicle to prepare for storing the next old guardrail. When the new guardrail inside the transport vehicle is pulled out and installed, the interior of the transport vehicle will also be filled with the dismantled old guardrail. Then the staff can push the transport vehicle to the corresponding position, recycle the dismantled old guardrail, and load the new guardrail into the interior of the transport vehicle, thereby improving the efficiency of removing and replacing the guardrail.

[0018] 2. When the electric push rod pushes the movable frame as a whole to move downward on the outer wall of the column, the movable plate will collide with the top of the column, thereby squeezing the airbag through the movable plate. After the airbag is squeezed, the internal gas will be filled into the cylinder through the electric control air valve and the connecting valve, thereby squeezing one end of the arc spring plate through the output shaft of the cylinder, so that the raised arc spring plate clamps the outer wall of the column to limit the position, and then the control panel will control the electric control air valve to close, thereby maintaining the air pressure inside the cylinder, so that the arc spring plate can stably clamp the column.

[0019] 3. When the electric push rod pushes the movable frame downward to move a corresponding distance, the arc-shaped internal thread piece located on the outer wall of the movable frame will contact the external thread sleeve on the outer wall of the electric push rod. As the electric push rod continues to push the movable frame downward through the output shaft, the arc-shaped internal thread piece will drive the movable frame to rotate to one side by a corresponding angle under the action of the threads on the outer wall of the external thread sleeve, thereby adjusting the angle of the railings and columns clamped by the movable frame, making it convenient to install and recover the railings and columns.

[0020] 4. When the movable frame moves to the outer wall of the new column at one end of the transport vehicle, the electric push rod will push the movable frame downward by a corresponding distance. At this time, the rack plate on one side of the movable frame after moving downward by a corresponding distance will just move to the side of the transmission gear. Then the second electric slide rail will push the movable frame forward as a whole, so that the rack plate moving forward will engage with the transmission gear, driving the rotating shaft to rotate a corresponding angle, so that the rotating shaft drives the conveyor belt to rotate forward by a corresponding angle, allowing the new railings and columns to move forward to fill the gaps, and at the same time allowing the removed railings and columns to move forward to reserve space for the railings and columns that need to be removed later.

[0021] 5. When the rotating mechanism drives the movable frame to rotate 90 degrees forward and backward, the metal blocks located on the outer wall of the movable frame will be respectively attached to the conical blocks corresponding to the outer wall of the output shaft of the electric push rod, thereby limiting the movable frame after rotation and improving the accuracy of the rotation angle of the movable frame. At the same time, the magnetic block on the outer wall of the conical block will absorb the metal block through its own magnetic force, thereby improving the stability of the movable frame after rotating to the corresponding angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of a highway maintenance guardrail dismantling and replacing device proposed by the present invention;

[0023] Figure 2 A schematic diagram of the internal structure of a transport vehicle for a highway maintenance guardrail removal and replacement device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the outer wall structure of a movable frame of a highway maintenance guardrail removal and replacement device proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the inner wall structure of a movable frame of a highway maintenance guardrail removal and replacement device proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the transmission mechanism structure of a highway maintenance guardrail removal and replacement device proposed by the present invention;

[0027] Figure 6 A schematic diagram of dismantling an old guardrail of a highway maintenance guardrail dismantling and replacing device proposed by the present invention;

[0028] Figure 7 A schematic diagram of placing an old guardrail of a highway maintenance guardrail replacement device proposed by the present invention into a transport vehicle;

[0029] Figure 8 A schematic diagram of a new guardrail clamping device for highway maintenance guardrail replacement proposed by the present invention;

[0030] Fig. 9 A schematic diagram of the installation of a new guardrail of a highway maintenance guardrail replacement device proposed by the present invention;

[0031] Fig.10 The present invention is a schematic diagram of a circuit flow of a highway maintenance guardrail replacement device.

[0032] In the figure: 1 a transport vehicle, 2 a control panel, 3 a movable frame, 4 a first electric slide rail, 5 an electric push rod, 6 an external threaded sleeve, 7 a railing, 8 a column, 9 a second electric slide rail, 10 a transmission gear, 11 a rotating shaft, 12 a first support seat, 13 a transmission shaft, 14 a second support seat, 15 a first bevel gear, 16 a third support seat, 17 a pulley, 18 a second bevel gear, 19 a protective shell, 20 a conveyor belt, 21 a limit baffle, 22 a guide plate, 23 an arc-shaped internal threaded sheet, 24 a conical baffle, 25 a magnetic block, 26 a movable plate, 27 a cylinder, 28 a rack plate, 29 an arc-shaped spring plate, 30 a card block, 31 a friction pad, 32 an air bag, 33 a movable frame, 34 a metal block, 35 an electric-controlled air valve, and 36 a connecting valve. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Embodiment 1:

[0036] A road maintenance guardrail replacement device, such as Figure 1-10 As shown, it includes a transport vehicle 1, the outer walls of both sides of the transport vehicle 1 are respectively fixed with second electric slide rails 9, the inner walls of the second electric slide rails 9 are slidably connected with a movable frame 3, the outer wall of the movable frame 3 is fixed with a first electric slide rail 4, the inner wall of the first electric slide rail 4 is slidably connected with an electric push rod 5, the output shaft of the electric push rod 5 is rotatably connected with a movable frame 33, the inner walls of both sides of the movable frame 33 are respectively fixed with arc-shaped spring plates 29, one end of the arc-shaped spring plate 29 is slidably connected to the inner wall of the movable frame 33, the outer walls of the movable frame 33 and the arc-shaped spring plate 29 are provided with a squeezing mechanism, and the outer walls of the movable frame 33 and the electric push rod 5 are provided with a rotating mechanism;

[0037] The inner wall of the transport vehicle 1 is fixed with a protective shell 19, the inner wall of the protective shell 19 is rotatably connected with a conveyor belt 20, the inner wall of the conveyor belt 20 is transmission-connected with a pulley 17, the outer wall of the pulley 17 is fixed with a second bevel gear 18, the outer wall of the protective shell 19 is fixed with a third support seat 16, the outer wall of the third support seat 16 is rotatably connected with a first bevel gear 15, the first bevel gear 15 is meshingly connected with the second bevel gear 18, and a transmission mechanism is provided on the inner wall of the transport vehicle 1 and the outer wall of the movable frame 33;

[0038] The inner wall of the transport vehicle 1 is fixed with a plurality of guide plates 22, the outer wall of the guide plates 22 is slidably connected with a railing 7, and the outer wall of the railing 7 is fixed with a column 8 by screws;

[0039] A plurality of limit baffles 21 are fixed to the outer wall of the conveyor belt 20;

[0040] A control panel 2 is fixed to the outer wall of the transport vehicle 1, and the second electric slide rail 9, the first electric slide rail 4 and the electric push rod 5 are electrically connected to the control panel 2 respectively;

[0041] The outer wall of the arc-shaped spring plate 29 is fixed with a friction pad 31 and a group of clamping blocks 30;

[0042] The staff firstly connects the multiple new railings 7 and columns 8 to be installed together by bolting them together, and then places the connected railings 7 and columns 8 on the guide plate 22 and the conveyor belt 20 inside the transport vehicle 1. The limit baffle 21 located outside the conveyor belt 20 clamps and limits the multiple columns 8. A grid of the conveyor belt 20 close to the forward direction of the transport vehicle 1 is left empty to hold the railings 7 and columns 8 to be removed first.

[0043] Then the staff moves the transport vehicle 1 to the road corresponding to the guardrail to be removed, and then controls the second electric slide rail 9 through the control panel 2 to drive the movable frame 3 to move forward, so that the movable frame 33 at the bottom of the electric push rod 5 moves to the top of the corresponding column 8 to be removed, and then the control panel 2 controls the electric push rod 5 to push the movable frame 33 to move downward by a corresponding distance, so that the two arc-shaped spring plates 29 connected to the inner wall of the movable frame 33 can move to both sides of the column 8, and then as the electric push rod 5 continues to push the movable frame 33 downward, the extrusion mechanism set on the inner wall of the movable frame 33 can squeeze one end of the arc-shaped spring plate 29, so that the arc-shaped spring plate 29 bulges outward as a whole, and the outer wall of the column 8 is pressed by the friction pad 31 and the block 30 on one side. The movable frame 33 is squeezed and limited, so that the movable frame 33 clamps and limits the column 8 through the arc spring plate 29, and then the staff removes the bolts fixing one end of the railing 7, and then the electric push rod 5 drives the movable frame 33 to move upward to a certain height as a whole, so that the railing 7 and the column 8 to be removed are lifted as a whole. When the electric push rod 5 drives the movable frame 33 to move upward through the output shaft, the rotating mechanism located on the outer wall of the movable frame 33 drives the movable frame 33 to rotate ninety degrees to one side, so that the railing 7 and the column 8 can open vertically toward one side of the transport vehicle 1, and then the control panel 2 controls the second electric slide rail 9 to drive the movable frame 3 to move back, so that the first removed railing 7 and column 8 are inserted into the previously reserved grid conveyor belt 20;

[0044] Then, the control panel 2 controls the squeezing mechanism to release the squeezing of the arc spring plate 29, thereby releasing the clamping of the arc spring plate 29 on the railing 7 and the column 8. Then, the control panel 2 controls the second electric slide rail 9 to drive the movable frame 3 to move forward a short set distance, so that the movable frame 33 moves as a whole to the side of the protective shell 19. Then, the control panel 2 controls the first electric slide rail 4 to drive the electric push rod 5 to move to the position where the new railing 7 and the column 8 are placed at the other end of the transport vehicle 1. Then, the control panel 2 controls the second electric slide rail 9 to drive the movable frame 3 to move back and reset, so that the movable frame 33 moves to the outer wall of the new column 8 placed inside the transport vehicle 1. Then, the control panel 2 controls the electric push rod 5 to push the movable frame 33 downward by a certain distance, so that the new column 8 is pressed by the squeezing mechanism on the inner wall of the movable frame 33 and the arc spring plate 29. The control panel 2 then controls the second electric slide rail 9 to push the movable frame 3 forward by a corresponding distance, thereby moving the column 8 outward to the position where the old railing 7 and column 8 were previously removed. The second electric slide rail 9 drives the movable frame 33 to move outward as a whole. At the same time, the transmission mechanism located on the outer wall of the movable frame 33 and the inner wall of the transport vehicle 1 drives the first bevel gear 15 to rotate when the movable frame 33 moves outward, thereby driving the second bevel gear 18 and the pulley 17 to rotate as a whole by a certain angle through the first bevel gear 15, so that the conveyor belt 20 rotates forward by a certain distance, allowing the new railing 7 and column 8 on the top of the conveyor belt 20 to move forward by one grid, replacing the railing 7 and column 8 that have just been removed, and at the same time, a grid of the conveyor belt 20 continues to be left at the other end of the transport vehicle 1, ready to store the next old railing 7 and column 8;

[0045] Then the control panel 2 controls the electric push rod 5 to push the movable frame 33 to continue to move downward. After the movable frame 33 moves downward to the corresponding distance, it will drive the movable frame 33 to rotate ninety degrees through the rotating mechanism of the outer wall, so that the new railing 7 and column 8 can be rotated to a position level with the opening on one side of the transport vehicle 1. After the column 8 is moved to the road surface, the staff can install the new railing 7 and column 8 by bolts. After the installation is completed, the control panel 2 controls the second electric slide rail 9, the first electric slide rail 4 and the electric push rod 5 to drive the movable frame 33 to reset, and then the next section of the old guardrail that has not been removed can be removed. When the new railing 7 and column 8 inside the transport vehicle 1 are pulled out and installed, the inside of the transport vehicle 1 will also be filled with the removed old railing 7 and column 8. Then the staff can push the transport vehicle 1 to the corresponding position, recycle the removed old railing 7 and column 8, and load the new railing 7 and column 8 into the inside of the transport vehicle 1.

[0046] like Figure 3-4As shown, the extrusion mechanism includes an airbag 32, a movable plate 26, an electric-controlled air valve 35, a connecting valve 36 and a cylinder 27. The airbag 32 is fixed on the top inner wall of the movable frame 33, the movable plate 26 is fixed on the bottom outer wall of the airbag 32, the electric-controlled air valve 35 is arranged on the bottom outer wall of the airbag 32, the electric-controlled air valve 35 runs through the outer wall of one side of the movable plate 26, the cylinder 27 is respectively fixed on the inner walls on both sides of the movable frame 33, the connecting valve 36 is arranged on the input end of the cylinder 27, and the electric-controlled air valve 35 and the connecting valve 36 are connected through an air supply pipeline; when the electric push rod 5 pushes the movable frame 33 as a whole to move downward on the outer wall of the column 8, the movable plate 26 will collide with the top of the column 8, thereby The movable plate 26 squeezes the airbag 32. After being squeezed, the airbag 32 will fill the internal gas into the cylinder 27 through the electric control valve 35 and the connecting valve 36, thereby squeezing one end of the arc spring plate 29 through the output shaft of the cylinder 27, so that the raised arc spring plate 29 clamps and limits the outer wall of the column 8. Then the control panel 2 will control the electric control valve 35 to close, so as to maintain the air pressure inside the cylinder 27, so that the arc spring plate 29 can stably clamp the column 8; when it is necessary to release the clamping limit of the arc spring plate 29 on the column 8, the control panel 2 will control the electric control valve 35 to open. At this time, the cylinder 27 will refill the internal gas into the airbag 32 under the elastic force of the arc spring plate 29.

[0047] like Figure 3 As shown, the rotating mechanism includes an external thread sleeve 6 and an arcuate internal thread sheet 23, the external thread sleeve 6 is fixed on the outer wall of the electric push rod 5, the arcuate internal thread sheet 23 is fixed on the top outer wall of the movable frame 33, and the arcuate internal thread sheet 23 and the external thread sleeve 6 are meshed and connected; when the electric push rod 5 pushes the movable frame 33 to move downward by a corresponding distance, the arcuate internal thread sheet 23 located on the outer wall of the movable frame 33 will contact the external thread sleeve 6 on the outer wall of the electric push rod 5, as the electric push rod 5 continues to push the movable frame 33 downward through the output shaft, the arcuate internal thread sheet 23 will drive the movable frame 33 to rotate to one side by a corresponding angle under the action of the thread on the outer wall of the external thread sleeve 6, thereby adjusting the angle of the handrail 7 and the column 8 clamped by the movable frame 33, which is convenient for the installation and recovery of the handrail 7 and the column 8.

[0048] like Figure 2-5As shown, the transmission mechanism includes a first support seat 12, a rotating shaft 11, a transmission gear 10, a transmission shaft 13, a second support seat 14 and a rack plate 28, the rack plate 28 is fixed to an outer wall of one side of the movable frame 33, the first support seat 12 is fixed to an inner wall of one side of the transport vehicle 1, the rotating shaft 11 is rotatably connected to the inner wall of the first support seat 12, the transmission gear 10 is fixed to the outer wall of the rotating shaft 11, the second support seat 14 is fixed to the outer wall of the protective shell 19, the transmission shaft 13 is rotatably connected to the inner wall of the second support seat 14, the transmission shaft 13 is respectively connected to the rotating shaft 11 and the first bevel gear 15 through a transmission chain, and the transmission gear 10 is meshed with the rack plate 28; when the movable frame 33 moves to the outer wall of a new column 8 at one end of the transport vehicle 1 After that, the electric push rod 5 will push the movable frame 33 to move downward by a corresponding distance, so that the extrusion mechanism can squeeze the arc spring plate 29, so that the arc spring plate 29 can clamp and fix the column 8. At this time, the rack plate 28 on one side of the movable frame 33 after moving downward by a corresponding distance will just move to the side of the transmission gear 10, and then the second electric slide rail 9 will push the movable frame 33 to move forward as a whole, so that the rack plate 28 moving forward is engaged with the transmission gear 10, driving the rotating shaft 11 to rotate a corresponding angle, so that the rotating shaft 11 drives the conveyor belt 20 to rotate forward by a corresponding angle, so that the new railing 7 and column 8 can move forward to fill the gap, and at the same time, the removed railing 7 and column 8 can move forward to reserve space for the railing 7 and column 8 that need to be removed later.

[0049] When the present embodiment is used, the staff firstly connects the multiple new railings 7 and columns 8 to be installed together by bolts, and then places the connected railings 7 and columns 8 on the guide plate 22 and the conveyor belt 20 inside the transport vehicle 1. The limit baffle 21 located outside the conveyor belt 20 clamps and limits the multiple columns 8, and a grid of the conveyor belt 20 close to the forward direction of the transport vehicle 1 is left empty for containing the railings 7 and columns 8 to be removed first.

[0050] Then the staff moves the transport vehicle 1 to the road corresponding to the guardrail to be removed, and then controls the second electric slide rail 9 through the control panel 2 to drive the movable frame 3 to move forward, so that the movable frame 33 at the bottom of the electric push rod 5 moves to the top of the corresponding column 8 to be removed, and then the control panel 2 controls the electric push rod 5 to push the movable frame 33 to move downward by a corresponding distance, so that the two arc-shaped spring plates 29 connected to the inner wall of the movable frame 33 can move to both sides of the column 8, and then as the electric push rod 5 continues to push the movable frame 33 downward, the extrusion mechanism set on the inner wall of the movable frame 33 can squeeze one end of the arc-shaped spring plate 29, so that the arc-shaped spring plate 29 bulges outward as a whole, and the outer wall of the column 8 is pressed by the friction pad 31 and the block 30 on one side. The movable frame 33 is squeezed and limited, so that the movable frame 33 clamps and limits the column 8 through the arc spring plate 29, and then the staff removes the bolts fixing one end of the railing 7, and then the electric push rod 5 drives the movable frame 33 to move upward to a certain height as a whole, so that the railing 7 and the column 8 to be removed are lifted as a whole. When the electric push rod 5 drives the movable frame 33 to move upward through the output shaft, the rotating mechanism located on the outer wall of the movable frame 33 drives the movable frame 33 to rotate ninety degrees to one side, so that the railing 7 and the column 8 can open vertically toward one side of the transport vehicle 1, and then the control panel 2 controls the second electric slide rail 9 to drive the movable frame 3 to move back, so that the first removed railing 7 and column 8 are inserted into the previously reserved grid conveyor belt 20;

[0051] Then, the control panel 2 controls the squeezing mechanism to release the squeezing of the arc spring plate 29, thereby releasing the clamping of the arc spring plate 29 on the railing 7 and the column 8. Then, the control panel 2 controls the second electric slide rail 9 to drive the movable frame 3 to move forward a short set distance, so that the movable frame 33 moves as a whole to the side of the protective shell 19. Then, the control panel 2 controls the first electric slide rail 4 to drive the electric push rod 5 to move to the position where the new railing 7 and the column 8 are placed at the other end of the transport vehicle 1. Then, the control panel 2 controls the second electric slide rail 9 to drive the movable frame 3 to move back and reset, so that the movable frame 33 moves to the outer wall of the new column 8 placed inside the transport vehicle 1. Then, the control panel 2 controls the electric push rod 5 to push the movable frame 33 downward by a certain distance, so that the new column 8 is pressed by the squeezing mechanism on the inner wall of the movable frame 33 and the arc spring plate 29. The control panel 2 then controls the second electric slide rail 9 to push the movable frame 3 forward by a corresponding distance, thereby moving the column 8 outward to the position where the old railing 7 and column 8 were previously removed. The second electric slide rail 9 drives the movable frame 33 to move outward as a whole. At the same time, the transmission mechanism located on the outer wall of the movable frame 33 and the inner wall of the transport vehicle 1 drives the first bevel gear 15 to rotate when the movable frame 33 moves outward, thereby driving the second bevel gear 18 and the pulley 17 to rotate as a whole by a certain angle through the first bevel gear 15, so that the conveyor belt 20 rotates forward by a certain distance, allowing the new railing 7 and column 8 on the top of the conveyor belt 20 to move forward by one grid, replacing the railing 7 and column 8 that have just been removed, and at the same time, a grid of the conveyor belt 20 continues to be left at the other end of the transport vehicle 1, ready to store the next old railing 7 and column 8;

[0052] Then the control panel 2 controls the electric push rod 5 to push the movable frame 33 to continue to move downward. After the movable frame 33 moves downward to the corresponding distance, it will drive the movable frame 33 to rotate ninety degrees through the rotating mechanism of the outer wall, so that the new railing 7 and column 8 can be rotated to a position level with the opening on one side of the transport vehicle 1. After the column 8 is moved to the road surface, the staff can install the new railing 7 and column 8 by bolts. After the installation is completed, the control panel 2 controls the second electric slide rail 9, the first electric slide rail 4 and the electric push rod 5 to drive the movable frame 33 to reset, and then the next section of the old guardrail that has not been removed can be removed. When the new railing 7 and column 8 inside the transport vehicle 1 are pulled out and installed, the inside of the transport vehicle 1 will also be filled with the removed old railing 7 and column 8. Then the staff can push the transport vehicle 1 to the corresponding position, recycle the removed old railing 7 and column 8, and load the new railing 7 and column 8 into the inside of the transport vehicle 1.

[0053] Embodiment 2:

[0054] A road maintenance guardrail replacement device, such as Figure 3As shown, the present embodiment makes the following improvements on the basis of the embodiment 1: a metal block 34 is fixed to the outer wall of the movable frame 33, and a group of conical blocks 24 are fixed to the outer wall of the output shaft of the electric push rod 5, and the angle between the two conical blocks 24 is a right angle; a magnetic block 25 is provided on the outer wall of the conical block 24; when the rotating mechanism drives the movable frame 33 to rotate back and forth by ninety degrees, the metal blocks 34 located on the outer wall of the movable frame 33 will be respectively attached to the conical blocks 24 corresponding to the outer wall of the output shaft of the electric push rod 5, thereby limiting the movable frame 33 after rotation, improving the accuracy of the rotation angle of the movable frame 33, and at the same time, the magnetic block 25 on the outer wall of the conical block 24 will absorb the metal block 34 through its own magnetic force, thereby improving the stability of the movable frame 33 after rotating to a corresponding angle.

[0055] When this embodiment is in use, when the rotating mechanism drives the movable frame 33 to rotate ninety degrees forward and backward, the metal blocks 34 located on the outer wall of the movable frame 33 will respectively stick to the conical stoppers 24 corresponding to the outer wall of the output shaft of the electric push rod 5, thereby limiting the movable frame 33 after rotation and improving the accuracy of the rotation angle of the movable frame 33. At the same time, the magnetic block 25 on the outer wall of the conical stopper 24 will absorb the metal block 34 through its own magnetic force.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A guardrail dismantling and replacing device for highway maintenance, comprising a transport vehicle (1), characterized in that: The outer walls of both sides of the transport vehicle (1) are respectively fixed with second electric slide rails (9), the inner wall of the second electric slide rail (9) is slidably connected with a movable frame (3), the outer wall of the movable frame (3) is fixed with a first electric slide rail (4), the inner wall of the first electric slide rail (4) is slidably connected with an electric push rod (5), the output shaft of the electric push rod (5) is rotatably connected with a movable frame (33), the inner walls of both sides of the movable frame (33) are respectively fixed with arc-shaped spring plates (29), one end of the arc-shaped spring plate (29) is slidably connected to the inner wall of the movable frame (33), the outer walls of the movable frame (33) and the arc-shaped spring plate (29) are provided with a squeezing mechanism, and the outer walls of the movable frame (33) and the electric push rod (5) are provided with a rotating mechanism; A protective shell (19) is fixed on the inner wall of the transport vehicle (1), the inner wall of the protective shell (19) is rotatably connected to a conveyor belt (20), the inner wall of the conveyor belt (20) is transmission-connected to a pulley (17), the outer wall of the pulley (17) is fixed to a second bevel gear (18), the outer wall of the protective shell (19) is fixed to a third support seat (16), the outer wall of the third support seat (16) is rotatably connected to a first bevel gear (15), the first bevel gear (15) and the second bevel gear (18) are meshingly connected, and a transmission mechanism is provided on the inner wall of the transport vehicle (1) and the outer wall of the movable frame (33).

2. A road maintenance guardrail replacement device according to claim 1, characterized in that: A plurality of guide plates (22) are fixed on the inner wall of the transport vehicle (1); a railing (7) is slidably connected to the outer wall of the guide plate (22); and a column (8) is fixed to the outer wall of the railing (7) by means of screws.

3. A road maintenance guardrail dismantling and replacing device according to claim 1, characterized in that: A plurality of limit baffles (21) are fixed to the outer wall of the conveyor belt (20).

4. A road maintenance guardrail dismantling and replacing device according to claim 2, characterized in that: A control panel (2) is fixed to the outer wall of the transport vehicle (1), and the second electric slide rail (9), the first electric slide rail (4) and the electric push rod (5) are electrically connected to the control panel (2) respectively.

5. A road maintenance guardrail dismantling and replacing device according to claim 1, characterized in that: A friction pad (31) and a group of clamping blocks (30) are fixed on the outer wall of the arc-shaped spring plate (29).

6. A road maintenance guardrail dismantling and replacing device according to claim 1, characterized in that: The extrusion mechanism comprises an airbag (32), a movable plate (26), an electric-controlled air valve (35), a connecting valve (36) and a cylinder (27); the airbag (32) is fixed on the top inner wall of the movable frame (33); the movable plate (26) is fixed on the bottom outer wall of the airbag (32); the electric-controlled air valve (35) is arranged on the bottom outer wall of the airbag (32); the electric-controlled air valve (35) penetrates the outer wall of one side of the movable plate (26); the cylinder (27) is respectively fixed on the inner walls of both sides of the movable frame (33); the connecting valve (36) is arranged on the input end of the cylinder (27); and the electric-controlled air valve (35) and the connecting valve (36) are connected through an air transmission pipeline.

7. A road maintenance guardrail dismantling and replacing device according to claim 1, characterized in that: The rotating mechanism comprises an external thread sleeve (6) and an arcuate internal thread sheet (23); the external thread sleeve (6) is fixed on the outer wall of the electric push rod (5); the arcuate internal thread sheet (23) is fixed on the top outer wall of the movable frame (33); and the arcuate internal thread sheet (23) and the external thread sleeve (6) are meshedly connected.

8. A road maintenance guardrail dismantling and replacing device according to claim 1, characterized in that: The transmission mechanism comprises a first support seat (12), a rotating shaft (11), a transmission gear (10), a transmission shaft (13), a second support seat (14) and a rack plate (28); the rack plate (28) is fixed to an outer wall of one side of the movable frame (33); the first support seat (12) is fixed to an inner wall of one side of the transport vehicle (1); the rotating shaft (11) is rotatably connected to the inner wall of the first support seat (12); the transmission gear (10) is fixed to the outer wall of the rotating shaft (11); the second support seat (14) is fixed to the outer wall of the protective shell (19); the transmission shaft (13) is rotatably connected to the inner wall of the second support seat (14); the transmission shaft (13) is respectively transmission-connected to the rotating shaft (11) and the first bevel gear (15) through a transmission chain; the transmission gear (10) is meshingly connected to the rack plate (28).

9. A road maintenance guardrail dismantling and replacing device according to claim 8, characterized in that: A metal block (34) is fixed on the outer wall of the movable frame (33), a group of conical blocks (24) are fixed on the outer wall of the output shaft of the electric push rod (5), the angle between the two conical blocks (24) is a right angle, and a magnetic block (25) is arranged on the outer wall of the conical block (24).

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