Mobile operation platform for tunnel construction

Abstract

The utility model discloses a mobile operation platform for tunnel construction, which relates to the technical field of tunnel construction equipment and comprises a door-shaped frame, and the door-shaped frame is composed of a top plate and vertical plates on two sides. The main platform is located over the top plate, the auxiliary platform is installed on the vertical plate, the main platform is connected with the top plate through two first lifting assemblies which are arranged side by side front and back, and each first lifting assembly comprises a two-way threaded rod, two lower sliding blocks, two upper sliding blocks and two supporting rods; the two-way threaded rods of the two first lifting assemblies are connected through a synchronous driving assembly, the left side and the right side of the bottom of the main platform are each provided with two vertical guide rods, the guide rods slidably penetrate through the top plate, and the auxiliary platform is installed on the outer side of the vertical plate through a second lifting assembly; the three platforms of which the heights can be independently adjusted are arranged on the mobile operation platform and do not interfere with one another, so that the construction comfort and convenience of constructors are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, and particularly relates to a mobile operation platform for tunnel construction. Background Art

[0002] During tunnel construction, it is often necessary to manually line the arch of the tunnel and lay various lines. However, since the height of the tunnel generally exceeds the height of normal construction workers, in order to facilitate construction, a scaffolding is often erected to make up for the construction height difference.

[0003] Chinese Patent CN202010791334.0 discloses a scaffolding for building construction, which includes a supporting vertical rod. A sleeve is arranged on the outer side of the bottom end of the supporting vertical rod. A universal wheel is bolted to the bottom of the sleeve. A stabilizing support rod is hinged to the surface of the supporting vertical rod through a movable shaft. A first cross beam and a second cross beam are respectively fixedly connected above and below the surface of the supporting vertical rod. An installation frame is arranged on one side of the supporting vertical rod facing each other and above the stabilizing support rod.

[0004] Regarding the above related technology, the inventor believes that during tunnel construction, the designed scaffolding for building construction will be used by different operators, and the heights of different operators are not the same. However, the designed scaffolding for building construction can only adjust a fixed height each time, so that the operator cannot select a comfortable operating height according to his own height and the current construction height, which affects the construction comfort of the operator. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a mobile operation platform for tunnel construction aiming at the defects existing in the prior art.

[0006] The technical solution of the utility model is: a mobile working platform for tunnel construction, including a gantry frame, which is composed of a top plate and two vertical plates on both sides; it also includes a main platform located directly above the top plate and a sub-platform installed on the vertical plates. The main platform is connected to the top plate through multiple groups of first lifting components arranged side by side in the front and back. The first lifting component includes a bidirectional threaded rod, two lower sliding blocks, two upper sliding blocks and two support rods. A plurality of horizontally arranged mounting grooves are formed on the top plate. The bidirectional threaded rod is rotatably installed in the mounting groove. The two lower sliding blocks are respectively threadedly connected to the left and right sections of the bidirectional threaded rod, and both are slidably arranged in the mounting groove. A plurality of horizontally arranged sliding grooves corresponding to the mounting grooves up and down are formed at the bottom of the main platform. The two upper sliding blocks are both slidably installed in the sliding grooves, and each is connected to a lower sliding block through a support rod. The middle parts of the two support rods are hinged, and they are in a scissor shape. The upper and lower ends of the support rods are respectively hinged to the upper sliding block and the lower sliding block. The bidirectional threaded rods of multiple groups of the first lifting components are connected through a synchronous drive component. A plurality of vertical guide rods are arranged on both the left and right sides of the bottom of the main platform, and the guide rods slidably penetrate through the top plate.

[0007] The sub-platform is installed on the outer side of the vertical plate through a second lifting component.

[0008] Preferably, there are two groups of the first lifting components. The synchronous drive component includes a driving gear and a driving motor. A longitudinal connection groove is formed on one side of the top of the top plate. The same ends of the two bidirectional threaded rods penetrate into the connection groove, and driven gears are both installed on them. The driving gear is rotatably installed in the connection groove and is meshed with the two driven gears. The driving motor is fixed on the gantry frame, and its output end is in transmission connection with the driving gear.

[0009] Preferably, there are two groups of the first lifting components. The synchronous drive component includes a synchronous shaft and a first motor. A longitudinal connection groove is formed on one side of the top of the top plate. The same ends of the two bidirectional threaded rods penetrate into the connection groove, and driven bevel gears are both installed on them. The synchronous shaft is rotatably installed in the connection groove, and two driving bevel gears respectively meshed with a driven bevel gear are installed on the synchronous shaft. The first motor is fixed on the gantry frame, and its output end is in transmission connection with the synchronous shaft.

[0010] Preferably, the second lifting component includes a second motor, a lead screw and a support column. Upper and lower horizontal mounting plates are respectively arranged at the upper and lower ends of the outer side of the vertical plate. The lead screw is arranged vertically, and its two ends are respectively rotatably installed on the upper mounting plate and the lower mounting plate. The two support columns are both vertically installed between the upper mounting plate and the lower mounting plate, and they are symmetrically arranged with the lead screw as the center. A fixed nut meshed with the lead screw and a sliding sleeve slidably connected with the support column are arranged on the sub-platform. The second motor is fixedly installed on the upper mounting plate, and its output end is in transmission connection with the lead screw.

[0011] Preferably, two vertical guide rods are provided on both the left and right sides of the bottom of the main platform. A guide sleeve slidably connected to the guide rods is fixedly installed at the bottom of the top plate, and protective covers for covering the guide rods are provided on both the left and right sides of the bottom of the top plate.

[0012] Preferably, electric wheels are provided at the four corners of the bottom of the gantry.

[0013] Compared with the prior art, the present utility model has the following advantages:

[0014] Three platforms with individually adjustable heights are provided on the present mobile working platform, which do not interfere with each other, effectively improving the construction comfort and convenience of construction workers; through the combined action of the synchronous drive assembly and the two groups of first lifting assemblies, the height of the main platform can be adjusted so that it can be suitable for construction workers of different heights; when the present mobile working platform moves forward or backward, it is driven by four electric wheels, and the four electric wheels rotate at the same speed to achieve stable straight forward and backward movement, and the left and right electric wheels can also be used to turn by using the wheel speed difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0016] Figure 2 is a top view of the present utility model;

[0017] Figure 3 is a front view of the present utility model.

[0018] In the figure: 1, gantry; 2, top plate, 201, installation groove, 202, connection groove; 3, vertical plate; 4, main platform, 401, sliding groove; 5, sub-platform; 6, bidirectional threaded rod; 7, lower slider; 8, support rod; 9, upper slider; 10, guide rod; 11, first motor; 12, synchronous shaft; 13, driven bevel gear; 14, driving bevel gear; 15, second motor; 16, lead screw; 17, support column; 18, fixing nut; 19, sliding sleeve; 20, guide sleeve; 21, protective cover; 22, electric wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the present utility model in conjunction with the drawings and embodiments. Embodiment 1

[0020] Refer to Figure 1-2As shown, a mobile work platform for tunnel construction includes a portal frame 1, which is composed of a top plate 2 and vertical plates 3 on both sides; it also includes a main platform 4 located directly above the top plate 2 and a secondary platform 5 installed on the vertical plates 3. The main platform 4 is connected to the top plate 2 through two groups of first lifting assemblies arranged side by side in front and back. The first lifting assembly includes a bidirectional threaded rod 6, two lower sliders 7, two upper sliders 9 and two support rods 8. Two transverse installation grooves 201 arranged side by side are opened on the top plate 2. The bidirectional threaded rod 6 is rotatably installed in the installation groove 201. The two lower sliders 7 are respectively threadedly connected to the left and right sections of the bidirectional threaded rod 6, and both are slidably arranged In the installation groove 201; two horizontal slide grooves 401 corresponding to the installation groove 201 are opened at the bottom of the main platform 4, and the two upper sliding blocks 9 are slidably installed in the slide grooves 401, and the two are connected to a lower sliding block 7 through a support rod 8; the middle part of the two support rods 8 is hinged, and the two are in a scissor shape, and the upper and lower ends of the support rods 8 are hinged to the upper sliding block 9 and the lower sliding block 7 respectively; the two groups of bidirectional threaded rods 6 of the first lifting components are connected through a synchronous drive component, and two vertical guide rods 10 are provided on the left and right sides of the bottom of the main platform 4, and the guide rods 10 slide through the top plate 2. The setting of the guide rods 10 can ensure that the main platform 4 can only move up and down.

[0021] In more detail, the synchronous drive assembly includes a synchronous shaft 12 and a first motor 11. A longitudinal connecting groove 202 is opened on one side of the top of the top plate 2. The same end of the two bidirectional threaded rods 6 passes through the connecting groove 202 and are both equipped with a driven bevel gear 13; the synchronous shaft 12 is rotatably installed in the connecting groove 202, and two active bevel gears 14 are installed on the synchronous shaft 12, each of which is meshed with a driven bevel gear 13; the first motor 11 is fixed on the portal frame 1, and its output end is transmission-connected to the synchronous shaft 12.

[0022] During work, the construction workers are located on the main platform 4 and start the first motor 11 to drive the synchronous shaft 12 to rotate. The synchronous shaft 12 then drives the two sets of bidirectional threaded rods 6 of the first lifting components to rotate synchronously through the transmission of the active bevel gear 14 and the driven bevel gear 13; driven by the bidirectional threaded rods 6, the two lower sliders 7 move relative to each other along the mounting groove 201, and drive the two upper sliders 9 to move relative to each other along the slide groove 401 through the support rod 8, thereby realizing the height adjustment of the main platform 4.

[0023] The auxiliary platform 5 is installed on the outside of the vertical plate 3 through the second lifting assembly. The second lifting assembly includes a second motor 15, a lead screw 16, and a support column 17. Horizontal upper and lower mounting plates are respectively provided at the upper and lower ends on the outside of the vertical plate 3. The lead screw 16 is vertically arranged, and its two ends are respectively rotatably installed on the upper and lower mounting plates. The two support columns 17 are both vertically installed between the upper and lower mounting plates, and the two are symmetrically arranged with the lead screw 16 as the center. The auxiliary platform 5 is provided with a fixing nut 18 meshed with the lead screw 16 and a sliding sleeve 19 slidably connected with the support column 17. The second motor 15 is fixedly installed on the upper mounting plate, and its output end is in transmission connection with the lead screw 16.

[0024] Construction workers can also stand on the auxiliary platform 5 to work. When it is necessary to adjust the height of the auxiliary platform 5, start the second motor 15 to drive the lead screw 16 to rotate, thereby driving the auxiliary platform 5 to slide up and down along the two support columns 17.

[0025] In addition, electric wheels 22 are provided at the four corners of the bottom of the gantry 1. When the mobile working platform moves forward or backward, it is driven by the four electric wheels 22. The four electric wheels 22 rotate at the same speed to achieve stable linear forward and backward movement, and the steering can also be carried out by using the speed difference between the left and right electric wheels 22. Embodiment 2

[0026] As a preferred embodiment of the present utility model, the difference between this embodiment and Embodiment 1 lies in the structure of the synchronous drive assembly, specifically:

[0027] The synchronous drive assembly of this embodiment includes a driving gear and a driving motor. A longitudinal connection groove 202 is opened on one side of the top of the top plate 2. The same ends of the two bidirectional threaded rods 6 penetrate into the connection groove 202 and are both installed with driven gears. The driving gear is rotatably installed in the connection groove 202 and is meshed with the two driven gears. The driving motor is fixed on the gantry 1, and its output end is in transmission connection with the driving gear.

[0028] When in use, start the driving motor to drive the driving gear to rotate, and then drive the two driven gears to drive the bidirectional threaded rods 6 to rotate synchronously. Embodiment 3

[0029] As a preferred embodiment of the present utility model, a guide sleeve 20 and a protective cover 21 are added in this embodiment on the basis of Embodiment 1, specifically:

[0030] Refer to Figure 3 As shown, in this embodiment, a guide sleeve 20 slidably connected with the guide rod 10 is fixedly installed at the bottom of the top plate 2, and protective covers 21 for covering the guide rod 10 are provided on the left and right sides of the bottom of the top plate 2.

[0031] The present utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present utility model, and the changed content still falls within the protection scope of the present utility model.

Claims

1. A mobile working platform for tunnel construction, comprising a portal frame, the portal frame consisting of a top plate and vertical plates on both sides, characterized in that: The lifting mechanism is a kind of indirect lifting mechanism, and its extension is, its extension is forward of the extension of the support frame, and its extension is in the direction of extension of the support frame, and its extension is in the direction of extension of the support frame. The auxiliary platform is installed on the outer side of the vertical plate through a second lifting assembly.

2. A mobile working platform for tunnel construction according to claim 1, characterized in that: The first lifting assembly is provided with two groups, and the synchronous driving assembly includes a driving gear and a driving motor. A longitudinal connecting groove is opened on one side of the top of the top plate, and the same end of the two bidirectional threaded rods penetrates into the connecting groove and is installed with a driven gear; the driving gear is rotatably installed in the connecting groove and meshed with the two driven gears; the driving motor is fixed on the portal frame, and its output end is transmission-connected with the driving gear.

3. A mobile working platform for tunnel construction according to claim 1, characterized in that: The first lifting assembly is provided with two groups, and the synchronous drive assembly includes a synchronous shaft and a first motor. A longitudinal connecting groove is opened on one side of the top of the top plate, and the same end of the two bidirectional threaded rods passes through the connecting groove and are both equipped with driven bevel gears; the synchronous shaft is rotatably installed in the connecting groove, and two active bevel gears are installed on the synchronous shaft, which are respectively meshed with a driven bevel gear; the first motor is fixed on the portal frame, and its output end is transmission-connected to the synchronous shaft.

4. A mobile working platform for tunnel construction according to claim 3, characterized in that: The second lifting assembly includes a second motor, a lead screw and a support column. The upper and lower ends of the outer side of the vertical plate are respectively provided with a horizontal upper mounting plate and a lower mounting plate. The lead screw is vertically arranged, and its two ends are rotatably mounted on the upper mounting plate and the lower mounting plate respectively; the two support columns are vertically installed between the upper mounting plate and the lower mounting plate, and the two are symmetrically arranged with the lead screw as the center; the secondary platform is provided with a fixing nut meshing with the lead screw and a sliding sleeve slidably connected with the support column, the second motor is fixedly mounted on the upper mounting plate, and its output end is transmission connected with the lead screw.

5. The mobile working platform for tunnel construction according to claim 1, characterized in that: Two vertical guide rods are arranged on the left and right sides of the bottom of the main platform, a guide sleeve slidably connected to the guide rods is fixedly installed on the bottom of the top plate, and protective covers for covering the guide rods are arranged on the left and right sides of the bottom of the top plate.

6. A mobile working platform for tunnel construction according to claim 1, characterized in that: Electric wheels are arranged at the four corners of the bottom of the door frame.

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