An assembled subway maintenance platform and a construction method

Abstract

The application relates to an assembled subway maintenance platform, which comprises a stand column and a first platform arranged on the stand column, the surface of the first platform is provided with a connecting groove penetrating through the first platform, the stand column is slidably arranged in the connecting groove, and the first platform is slidably arranged on the stand column through the connecting groove; a supporting seat for supporting the first platform is slidably arranged on the stand column, and the supporting seat is provided with a driving assembly for driving the supporting seat to slide along the length direction of the stand column. The assembled subway maintenance platform can facilitate the maintenance operation at different heights of the subway. The application further relates to a construction method of the assembled subway maintenance platform.

Description

Technical Field

[0001] The present application relates to the technical field of subway maintenance platforms, and in particular to an assembled subway maintenance platform and a construction method. Background Art

[0002] Subways have been put into use in major cities across my country, greatly alleviating the pressure on urban transportation. To ensure the safety of subway operation, they need to be regularly inspected and maintained to prevent failures within a foreseeable time. To this end, maintenance platforms need to be built on both sides of the subway tracks so that maintenance personnel can conduct comprehensive maintenance operations on the subway.

[0003] In the existing technology, in order to improve the efficiency of building a maintenance platform, the components of the maintenance platform are usually prefabricated in a processing plant. When the maintenance platform is built, the prefabricated maintenance platform components are transported to the site for assembly, and the adjacent components are fixedly connected by welding to form a maintenance platform for repairing the subway. This greatly shortens the construction period of the maintenance platform and improves the construction efficiency of the subway maintenance platform.

[0004] However, the height of such maintenance platforms is fixed. When maintenance personnel need to perform maintenance work at different heights of the subway, they are limited by their height and need to squat or use tools such as ladders to perform maintenance work at different heights of the subway, which causes inconvenience during the subway maintenance process and therefore needs further improvement. Summary of the Invention

[0005] In order to facilitate maintenance work at different heights of the subway, the present application provides an assembled subway maintenance platform and a construction method.

[0006] In the first aspect, the present application provides an assembled subway maintenance platform adopting the following technical solutions:

[0007] An assembled subway maintenance platform includes a column and a first platform arranged on the column, a connecting groove penetrating the first platform is opened on the plate surface of the first platform, the column is slidably inserted into the connecting groove, and the first platform is slidably sleeved on the column through the connecting groove; the column is slidably installed with a support seat for supporting the first platform, and the support seat is provided with a driving assembly for driving the support seat to slide along the length direction of the column.

[0008] By adopting the above-mentioned technical solution, through the arrangement of the column and the first platform, the first platform is slidably mounted on the column and supported on the first platform by the support seat, thereby forming a maintenance platform for repairing the subway. When it is necessary to carry out maintenance work at positions at different heights of the subway, the support seat is driven by the driving assembly to slide along the length direction of the column. The support seat can drive the first platform to rise or fall to adapt to maintenance work at positions at different heights of the subway, thereby improving the adaptability of the overall structure.

[0009] Optionally, a sliding groove is provided in the column, and two opposite side walls of the column are provided with connecting grooves connected to the sliding groove. The support seat is slidably installed in the sliding groove, and the two ends of the support seat respectively pass through the two connecting grooves and extend to the bottom of the first platform; the driving assembly includes a screw rod and a motor, the screw rod is rotatably installed in the sliding groove, the screw rod is passed through the support seat and is threadedly connected to the support seat, the motor is fixed to one end of the column, and the output shaft of the motor passes through the side wall of the column and is coaxially connected to the screw rod.

[0010] By adopting the above technical solution, through the setting of the screw rod and the motor, the driving motor drives the screw rod to rotate, and the screw rod can drive the sliding seat to slide along the length direction of the screw rod, thereby driving the first platform to rise or fall to adjust the height of the first platform.

[0011] Optionally, a rack is fixed to the side wall of the connecting groove, and both ends of the rack are extended along the length direction of the column; a rotating rod is rotatably installed on the side wall of the support seat, and a gear is fixed to one end of the rotating rod, and the gear is engaged with the rack for transmission, and the support seat is detachably installed with a limit piece for limiting the rotation of the rotating rod.

[0012] By adopting the above-mentioned technical solution, through the arrangement of the rack and the gear, under normal circumstances, the free rotation of the rotating rod is restricted by the limit piece, thereby being fixed to the gear, and part of the gravity of the support seat can be transmitted to the column through the gear and the rack in turn, thereby sharing part of the gravity of the support seat and the first platform, reducing the possibility of the gravity of the support seat and the first platform being concentrated on the screw rod and causing damage to the connection between the screw rod and the support seat; when it is necessary to lift or lower the first platform, the limiting effect of the limit piece on the rotating rod is removed, and then the first platform can be driven to lift or lower by the motor.

[0013] Optionally, the support seat is rotatably mounted with a rotating sleeve located in the sliding groove, and the rotating sleeve is provided with an anti-sudden drop component for limiting the speed of the support seat.

[0014] Optionally, the anti-sudden drop assembly includes a support rod hinged to the rotating sleeve and a rotating member for driving the rotating sleeve to rotate, the support rod is fixed with an abutting ball head for abutting the inner circumferential wall of the sliding groove at one end away from the rotating sleeve, a tension spring is provided between the support rod and the rotating sleeve, and the tension spring normally creates a gap between the abutting ball head and the inner circumferential wall of the sliding groove; the rotating member is arranged between the rotating sleeve and the rotating rod to drive the rotating rod and the rotating sleeve to rotate synchronously.

[0015] By adopting the above technical solution, through the arrangement of the support rod and the rotating member, the rotating member is used to drive the rotating rod and the rotating sleeve to rotate synchronously. When the connection between the screw rod and the support seat is damaged and the first platform drops suddenly, the rack can make the gear rotate rapidly during the rapid drop of the support seat, and the rotating sleeve rotates rapidly following the rotating rod under the action of the rotating member; when the rotating sleeve rotates rapidly, the support rod is acted upon by the strong centrifugal force of the rotating sleeve to overcome the tension of the tension spring and make the abutment ball head swing toward the inner peripheral wall of the sliding groove. When the abutment ball head abuts the inner peripheral wall of the sliding groove, relative sliding occurs between the abutment ball head and the inner peripheral wall of the sliding groove, generating friction, thereby increasing the friction between the rotating sleeve and the inner peripheral wall of the sliding groove, and then increasing the friction between the support seat and the column. This friction can reduce the falling speed of the support seat, thereby reducing the possibility that the first platform falls too fast and causes a safety hazard to the inspectors on the first platform.

[0016] Optionally, a plurality of elastically arranged speed limiting rings are fixed to the inner peripheral wall of the sliding groove, and all the speed limiting rings are arranged at intervals along the length direction of the column; the speed limiting ring has a guide surface for separating the abutting ball head from the speed limiting ring.

[0017] By adopting the above-mentioned technical solution and setting the speed limiting ring, when the abutting ball head moves toward the inner wall of the sliding groove under the centrifugal force of the rotating sleeve, the abutting ball head can abut against the elastically set speed limiting ring, and the speed limiting ring can block the abutting ball head to reduce the falling speed of the support seat. After the abutting ball head abuts against the speed limiting ring, it detaches from the speed limiting ring through the guide surface and falls to the next speed limiting ring, and this process is repeated. Multiple speed limiting rings respectively block the support seat and provide friction, greatly reducing the falling speed of the support seat; the guide surface of the speed limiting ring can force the abutting ball head to detach from the speed limiting ring in time, reducing the possibility of the abutting ball head being stuck in the speed limiting ring and causing the support seat to stop suddenly during the falling process, thereby improving the safety of the overall structure.

[0018] Optionally, the connecting groove is located in the middle of the first platform, and the thickness of the first platform gradually increases from the periphery to the middle.

[0019] By adopting the above technical solution, by gradually thickening the thickness of the first platform from the periphery to the middle position, the gravity of the first platform can be concentrated on the support seat as much as possible, thereby improving the supporting effect of the support seat on the first platform.

[0020] Optionally, a plurality of the columns and the first platforms are arranged at intervals along the extension direction of the subway track, and a second platform is detachably installed between two adjacent first platforms.

[0021] By adopting the above technical solution and setting up the second platform, the second platform connects two adjacent first platforms into a whole, so that maintenance personnel can walk between the two adjacent first platforms, thereby improving the convenience of subway maintenance.

[0022] Optionally, the second platform includes two extension plates, which are respectively hinged to the side walls of two adjacent first platforms that are close to each other, and the extension plates can be flipped toward the top of the first platform; a flipping member is provided between the extension plate and the first platform to keep the extension plate flipped above the first platform.

[0023] By adopting the above-mentioned technical solution, through the setting of the extension plates, the second platform normally formed by the two extension plates is used to connect two adjacent first platforms. When a first platform needs to be lifted, the extension plates on both sides of the first platform are flipped toward the top of the first platform, and the extension plates are kept in the flipped position by the flipping parts. The two extension plates can play the role of protecting the top of the first platform, reducing the possibility of maintenance personnel falling out of the first platform due to improper operation after the height of the first platform is raised, and further improving the safety of the overall structure.

[0024] In the second aspect, the present application provides a construction method for an assembled subway maintenance platform using the following technical solutions:

[0025] A construction method for an assembled subway maintenance platform specifically includes the following steps: S1. Opening positioning grooves: opening a plurality of positioning grooves at intervals on both sides along the extension direction of the subway track; S2. Installing columns: installing a plurality of the columns in a one-to-one correspondence in the positioning grooves; S3. Pouring concrete: pouring concrete into the positioning grooves; S4. Installing a first platform: installing a plurality of the first platforms in a one-to-one correspondence in the columns, and supporting the support seat on the first platform; S5. Installing a motor: fixing the motor on the column and coaxially fixing the output shaft of the motor to the screw rod; S6. Installing a second platform: installing a plurality of the second platforms in a one-to-one correspondence between two adjacent first platforms.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By arranging the columns and the first platform, the first platform is slidably mounted on the columns and supported on the first platform by the support base, thereby forming an inspection platform for subway maintenance. When maintenance work needs to be carried out at different heights of the subway, the support base is driven by the drive assembly to slide along the length of the columns. The support base can drive the first platform to rise or fall to adapt to maintenance work at different heights of the subway, thereby improving the adaptability of the overall structure.

[0028] 2. Through the arrangement of the support rod and the rotating member, the rotating member is used to drive the rotating rod and the rotating sleeve to rotate synchronously. When the connection between the screw rod and the support seat is damaged and the first platform drops suddenly, the rack can make the gear rotate rapidly during the process of the support seat falling rapidly, and the rotating sleeve rotates rapidly along with the rotating rod under the action of the rotating member; when the rotating sleeve rotates rapidly, the support rod is acted upon by the strong centrifugal force of the rotating sleeve to overcome the tension of the tension spring and make the abutment ball head swing toward the inner peripheral wall of the sliding groove. When the abutment ball head abuts the inner peripheral wall of the sliding groove, relative sliding occurs between the abutment ball head and the inner peripheral wall of the sliding groove to generate friction, thereby increasing the friction between the rotating sleeve and the inner peripheral wall of the sliding groove, and then increasing the friction between the support seat and the column. This friction can reduce the falling speed of the support seat, thereby reducing the possibility that the first platform falls too fast and causes a safety hazard to the inspectors on the first platform;

[0029] 3. Through the setting of the extension plates, the second platform normally formed by the two extension plates is used to connect two adjacent first platforms. When a first platform needs to be lifted, the extension plates on both sides of the first platform are flipped toward the top of the first platform, and the extension plates are kept in the flipped position by the flipping parts. The two extension plates can protect the upper part of the first platform, reduce the possibility of maintenance personnel falling out of the first platform due to improper operation after the height of the first platform is raised, and further improve the safety of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of an assembled subway maintenance platform in this application;

[0031] Figure 2 It is a structural diagram reflecting the second platform;

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 It is a schematic diagram showing the state after the extension plate is flipped;

[0034] Figure 5 It is a partial cross-sectional view showing the anti-sag component;

[0035] Figure 6 It is a partial cross-sectional view showing the internal structure of the sliding groove.

[0036] Explanation of reference numerals: 1. column; 11. sliding groove; 12. connecting groove; 13. rack; 14. speed limiting ring; 141. guide surface; 15. positioning member; 151. positioning steel bar; 152. positioning sleeve; 2. first platform; 21. connecting groove; 22. embedding groove; 23. docking groove; 24. docking seat; 241. clamping groove; 25. strip groove; 3. support seat; 31. rotating rod; 32. gear; 33. rotating sleeve; 34. Support part; 35. Bracket; 36. Limit bolt; 4. Drive assembly; 41. Screw; 42. Motor; 5. Anti-sudden drop assembly; 51. Support rod; 511. Abutment ball head; 512. Tension spring; 52. Rotating part; 521. First bevel gear; 522. Second bevel gear; 6. Second platform; 61. Extension plate; 7. Flipping part; 71. Connecting rope; 72. Hanging buckle; 73. Connecting ring; 8. Positioning groove; 81. Concrete body. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The embodiments of the present application disclose an assembled subway maintenance platform.

[0039] Reference Figure 1 、 Figure 2 An assembled subway maintenance platform includes columns 1. In this embodiment, the columns 1 are arranged in two rows and the two rows of columns 1 are symmetrically arranged on both sides of the subway track. There are multiple columns 1 in each row, and the number of columns 1 in each row is determined according to the length of the subway. The multiple columns 1 are arranged at intervals along the extension direction of the subway track.

[0040] Reference Figure 2 、 Figure 3 , the column 1 is vertically installed on the ground, and the lower end of the column 1 is installed with a positioning piece 15 for fixing the column 1 to the ground. In this embodiment, the positioning piece 15 includes a positioning steel bar 151 and a positioning sleeve 152; specifically, a plurality of positioning grooves 8 for corresponding insertion of the column 1 are opened on the ground, and all the positioning grooves 8 are arranged at intervals along the extension direction of the subway track. There are a plurality of positioning steel bars 151 and one end of all positioning steel bars 151 is fixedly installed on the lower end surface of the column 1, and all positioning steel bars 151 are evenly distributed along the lower end surface of the column 1; there are a plurality of positioning sleeves 152 and one end of all positioning sleeves 152 is fixedly installed on the bottom wall of the positioning groove 8, all positioning steel bars 151 and all positioning sleeves 152 are arranged in a one-to-one correspondence, and when the column 1 is inserted in the positioning groove 8, the positioning steel bar 151 is slidably inserted in the corresponding positioning sleeve 152; it should be noted that, in this embodiment, all the columns 1 are prefabricated parts.

[0041] Reference Figure 3 The positioning groove 8 is filled with a concrete body 81. Specifically, when the column 1 is inserted into the positioning groove 8 and the positioning steel bar 151 is inserted into the corresponding positioning sleeve 152, concrete is filled into the positioning groove 8. After the concrete solidifies, a concrete body 81 is formed. With this design, the column 1 is vertically installed on the ground through the setting of the concrete body 81 and the positioning member 15.

[0042] Reference Figure 2 、 Figure 4 In this embodiment, a first platform 2 is slidably installed on the column 1, and a connecting groove 21 is provided on the surface of the first platform 2 that penetrates the first platform 2. The connecting groove 21 is located in the middle position of the surface of the first platform 2, and the shape of the connecting groove 21 is adapted to the cross-sectional shape of the column 1; the column 1 is slidably penetrated in the connecting groove 21, and the first platform 2 is slidably sleeved on the column 1 through the connecting groove 21.

[0043] Reference Figure 5 、 Figure 6 , a sliding groove 11 is provided in the column 1, and the two ends of the sliding groove 11 extend along the length direction of the column 1. In this embodiment, the cross-sectional shape of the sliding groove 11 is set to a circle; the two opposite side walls of the column 1 are provided with a connecting groove 12, each connecting groove 12 is connected to the sliding groove 11, and the notches at both ends of the connecting groove 12 extend along the length direction of the column 1; a support seat 3 is slidably installed in the sliding groove 11, and the peripheral wall of the support seat 3 is integrally formed with two supporting parts 34, and the two supporting parts 34 are arranged one-to-one with the two communicating grooves 12. The supporting parts 34 pass through the corresponding communicating grooves 12 and extend to the bottom of the first platform 2. The two supporting parts 34 are used to support the first platform 2; it should be noted that in this embodiment, after the supporting part 34 is supported on the first platform 2, the first platform 2 and the supporting part 34 are fixed by bolts so that the first platform 2 can be detachably installed on the supporting part 34.

[0044] Reference Figure 1 、 Figure 5 The support seat 3 is equipped with a driving assembly 4 for driving the support seat 3 to slide along the length direction of the column 1. The driving assembly 4 includes a screw rod 41 and a motor 42. The screw rod 41 is vertically arranged and installed in the sliding groove 11. The two ends of the screw rod 41 are respectively rotatably installed on the two opposite side walls of the sliding groove 11. The screw rod 41 is penetrated by the support seat 3 and is threadedly connected to the support seat 3; in this embodiment, the motor 42 is fixedly installed on the upper end surface of the column 1, and the output shaft of the motor 42 passes through the column 1 and is coaxially connected to one end of the screw rod 41.

[0045] The starting motor 42 drives the screw rod 41 to rotate, which can drive the support seat 3 to slide along the length direction of the column 1, so that the support part 34 is supported on the first platform 2 and the height of the first platform 2 can be adjusted, so that maintenance personnel can perform maintenance work at different heights on the side of the subway or on the top of the subway, thereby improving the convenience of maintenance personnel in performing maintenance work on the subway.

[0046] Reference Figure 2 、 Figure 5 , the thickness of the first platform 2 gradually becomes thicker from the periphery to the middle position; an embedding groove 22 is opened on the bottom surface of the first platform 2, and the embedding groove 22 is connected to the connecting groove 21; in this embodiment, the embedding groove 22 is gradually expanded from the bottom wall of the embedding groove 22 to the groove opening of the embedding groove 22, and the shape of the supporting portion 34 of the support seat 3 is adapted to the shape of the embedding groove 22; with such a design, the thickness of the first platform 2 gradually becomes thicker from the periphery to the middle position, so that the gravity of the first platform 2 can be concentrated on the supporting portion 34 as much as possible, and transmitted to the supporting portion 34 through the side wall of the embedding groove 22 with the expansion setting, thereby improving the supporting effect of the supporting portion 34 on the first platform 2.

[0047] Reference Figure 2 、 Figure 4 The two opposite side walls of the first platform 2 adjacent to the subway track are both provided with docking grooves 23, and one end notch of the docking groove 23 passes through the upper surface of the first platform 2; a docking seat 24 is rotatably installed in each docking groove 23, and the two ends of the docking seat 24 are respectively hinged to the two opposite side walls of the docking groove 23; the docking seat 24 normally rotates to remain parallel to the board surface of the first platform 2 and the side walls of the docking groove 23 are supported on the docking seat 24, and the docking seat 24 is provided with a slot 241 away from the side wall of the first platform 2. When the docking seat 24 is rotated upward and the docking seat 24 is perpendicular to the board surface of the first platform 2, the side wall of the docking groove 23 close to the column 1 abuts against the docking seat 24 and limits the docking seat 24 from continuing to rotate; with this design, the side walls of the docking groove 23 can limit the rotation range of the docking seat 24, so that the docking seat 24 normally remains parallel to the board surface of the first platform 2 and can only rotate toward the top of the first platform 2.

[0048] Reference Figure 2 、 Figure 4A second platform 6 is installed between two adjacent first platforms 2 along the extension direction of the subway track. The second platform 6 includes two extension plates 61. The two extension plates 61 are arranged in a one-to-one correspondence with the docking seats 24 opposite to the two adjacent first platforms 2, and each extension plate 61 can be detachably installed on the corresponding docking seat 24; specifically, one end of the extension plate 61 is inserted into the card slot 241 of the docking seat 24. In this embodiment, after one end of the extension plate 61 is inserted into the card slot 241 of the docking seat 24, the extension plate 61 and the docking seat 24 are fixed by bolts to make them detachable; when the two adjacent first platforms 2 are at the same height and the card slots 241 of the docking seats 24 of the two adjacent first platforms 2 are rotated to a relative state, the two extension plates 61 are combined to form the second platform 6; it should be noted that in this embodiment, the first platform 2 and the second platform 6 are both prefabricated parts; with this design, the second platform 6 is connected between the two adjacent first platforms 2, so that the two adjacent first platforms 2 along the extension direction of the subway track form a whole, so that maintenance personnel can perform maintenance along the length direction of the subway.

[0049] Reference Figure 2 、 Figure 4 A strip groove 25 is provided on the upper surface of the first platform 2, and the strip groove 25 is located on the side of the first platform 2 away from the subway track. A flip member 7 is installed between the extension plate 61 and the corresponding first platform 2 to keep the extension plate 61 flipped above the first platform 2.

[0050] Reference Figure 4 The turning member 7 includes a connecting rope 71, a hanging buckle 72 and a connecting ring 73. One end of the connecting rope 71 is fixedly connected to the bottom wall of the strip groove 25, and the other end is fixedly connected to the hanging buckle 72. In this embodiment, the hanging buckle 72 is set as a climbing buckle, and the connecting ring 73 is fixedly installed on the surface of the extension plate 61. With this design, when it is necessary to lift the first platform 2 to perform maintenance work on the top of the subway, the extension plate 61 is pulled and the surface of the extension plate 61 is forced to rotate to a state perpendicular to the surface of the first platform 2, and then the hanging buckle 72 is hung on the connecting ring 73 to keep the extension plate 61 in the flipped state. The extension plates 61 and the connecting rope 71 on both sides of the first platform 2 can respectively block the edge above the first platform 2, so as to improve the working safety of the maintenance personnel on the first platform 2 and reduce the possibility of maintenance personnel falling on the first platform 2 and causing safety accidents.

[0051] Reference Figure 5 、 Figure 6A rack 13 is fixedly mounted on the side wall of each communicating groove 12, and both ends of the rack 13 extend along the length direction of the column 1; a bracket 35 is fixed to the lower surface of the support seat 3, and a rotating rod 31 is rotatably mounted on the bracket 35. There are two rotating rods 31 and the two rotating rods 31 are arranged in a one-to-one correspondence with the two racks 13. A gear 32 is fixedly mounted on the outer peripheral wall of one end of each rotating rod 31, and the gear 32 is meshed with the corresponding rack 13 for transmission.

[0052] Reference Figure 5 The support seat 3 is detachably installed with a limit piece for limiting the rotation of the rotating rod 31. In this embodiment, the limit piece is set as a limit bolt 36, which passes through the support seat 3 and abuts against the outer peripheral wall of the rotating rod 31. The limit bolt 36 is threadedly connected to the support seat 3; with such a design, when normal, the limit bolt 36 is locked to the rotating rod 31 to fix the meshing transmission between the gear 32 and the rack 13. The rack 13 can share part of the gravity of the support seat 3 and transmit it to the column 1, so as to reduce the possibility of the pressure of the support seat 3 being concentrated on the screw rod 41 and causing damage to the connection between the screw rod 41 and the support seat 3.

[0053] Reference Figure 5 、 Figure 6 A rotating sleeve 33 is rotatably installed on the lower surface of the support seat 3. The rotating sleeve 33 is located in the sliding groove 11 and the rotating sleeve 33 is coaxially sleeved on the screw rod 41. In this embodiment, there is a gap between the inner circumferential wall of the rotating sleeve 33 and the outer circumferential wall of the screw rod 41; the rotating sleeve 33 is installed with an anti-sudden drop component 5 for limiting the speed of the support seat 3. A plurality of anti-sudden drop components 5 are arranged and spaced around the outer circumferential wall of the rotating sleeve 33 and arranged at intervals along the axial direction of the rotating sleeve 33; with such a design, the anti-sudden drop component 5 can limit the speed of the support seat 3, so as to reduce the possibility of failure of the connection between the support seat 3 and the screw rod 41 causing a sudden drop of the first platform 2, thereby improving the safety of the overall structure.

[0054] Reference Figure 5The anti-sudden drop component 5 includes a support rod 51 and a rotating member 52. One end of the support rod 51 is hinged to the outer peripheral wall of the rotating sleeve 33, and the other end of the support rod 51 is fixedly installed with a contact ball head 511. In this embodiment, the contact ball head 511 is elastically arranged, and the outer diameter of the contact ball head 511 is larger than the width of the connecting groove 12; a tension spring 512 is installed between the side wall of the support rod 51 and the outer peripheral wall of the rotating sleeve 33. One end of the tension spring 512 is fixedly connected to the outer peripheral wall of the rotating sleeve 33, and the other end is fixedly connected to the side wall of the support rod 51. The tension spring 512 normally causes a gap to exist between the contact ball head 511 and the inner peripheral wall of the sliding groove 11; it should be noted that in this embodiment, the height of the contact ball head 511 is set to be lower than the height of the hinge between the corresponding support rod 51 and the rotating sleeve 33. In other embodiments, the height of the contact ball head 511 can also be set to be higher than the height of the hinge between the corresponding support rod 51 and the rotating sleeve 33.

[0055] Reference Figure 5 、 Figure 6 A plurality of elastically arranged speed limiting rings 14 are fixedly installed on the inner circumferential wall of the sliding groove 11. All the speed limiting rings 14 are arranged at intervals along the length direction of the column 1. Each speed limiting ring 14 is arranged in a ring shape around the inner circumferential wall of the sliding groove 11. Each speed limiting ring 14 is provided with a gap for avoiding the connecting groove 12; the speed limiting ring 14 has a guide surface 141 for separating the abutting ball head 511 from the speed limiting ring 14.

[0056] Reference Figure 5 The rotating member 52 is installed between the rotating sleeve 33 and the rotating rod 31 to drive the rotating rod 31 and the rotating sleeve 33 to rotate synchronously; in this embodiment, the rotating member 52 includes a first bevel gear 521 and a second bevel gear 522, the first bevel gear 521 is coaxially fixed to the outer peripheral wall of the rotating sleeve 33, and two second bevel gears 522 are provided, and the two second bevel gears 522 are arranged in a one-to-one correspondence with the two rotating rods 31, and each second bevel gear 522 is coaxially fixed to the outer peripheral wall of the corresponding rotating rod 31 away from the gear 32, and the first bevel gear 521 and the two second bevel gears 522 are meshed for transmission.

[0057] The implementation principle of the assembled subway maintenance platform in the embodiment of the present application is as follows: when it is necessary to inspect different heights of the side of the subway or the top of the subway, the motor 42 drives the support base 3 to move, and the height of the first platform 2 can be adjusted, so that the maintenance personnel can perform comprehensive maintenance operations on the subway, improving the adaptability of the overall structure;

[0058] When the support seat 3 drops suddenly, the support seat 3 drives the gear 32 to drop quickly, so that the gear 32 and the rack 13 are meshed and transmitted quickly, and the rotating sleeve 33 can rotate synchronously and quickly under the transmission of the rotating rod 31, the first bevel gear 521 and the second bevel gear 522. At this time, the support rod 51 is subjected to the strong centrifugal force of the rotating sleeve 33, and can overcome the tension of the tension spring 512 and swing toward the inner peripheral wall of the sliding groove 11, so that the abutting ball head 511 abuts against the speed limiting ring 14 on the inner peripheral wall of the sliding groove 11 and generates friction with the speed limiting ring 14. As the support seat 3 continues to fall, the support seat 3 can press the support rod 51, forcing the abutting ball head 511 to pass through the guide surface 141 of the speed limiting ring 14 and disengage from the speed limiting ring 14 and move to the next speed limiting ring 14. This is repeated, and multiple speed limiting rings 14 can provide friction for the support seat 3 respectively, thereby reducing the falling speed of the support seat 3 and reducing the possibility of safety accidents caused by the sudden drop of the support seat 3;

[0059] The guide surface 141 enables the abutment ball head 511 to detach from the speed limiting ring 14 in time after abutting against the speed limiting ring 14, so that the abutment ball head 511 moves down to the next speed limiting ring 14, thereby reducing the possibility of the support rod 51 and the inner wall of the sliding groove 11 being stuck during the falling process of the support seat 3, causing the first platform 2 to stop suddenly during the falling process, thereby improving the safety of the overall structure.

[0060] The embodiment of the present application also discloses a construction method of an assembled subway maintenance platform.

[0061] A construction method for an assembled subway maintenance platform specifically comprises the following steps:

[0062] S1. Opening of positioning groove 8:

[0063] a. Clean the ground;

[0064] b. Excavation of positioning grooves 8: multiple positioning grooves 8 are opened at equal intervals along the extension direction of the subway track;

[0065] c. Installation of the positioning sleeve 152; according to the arrangement of the positioning steel bars 151 at the lower end of the column 1, a plurality of positioning sleeves 152 are embedded in the bottom wall of the positioning groove 8 so that the plurality of positioning sleeves 152 correspond one to one with the plurality of positioning steel bars 151.

[0066] S2. Installation of column 1:

[0067] The column 1 is lifted to the top of the positioning groove 8 by a crane and vertically inserted into the positioning groove 8 , so that the multiple positioning steel bars 151 at the lower end of the column 1 are inserted into the corresponding positioning sleeves 152 one by one.

[0068] S3. Concrete pouring:

[0069] a. Pour concrete into the positioning groove 8;

[0070] b. Vibrate the concrete with a concrete vibrator, and after the concrete solidifies, form a concrete body 81.

[0071] S4. Installation of the first platform 2:

[0072] a. Use a crane to hoist the first platform 2 horizontally to the top of the column 1, lower the first platform 2 so that it slides through the connecting groove 21 to mount the column 1, and support the support base 3 on the first platform 2;

[0073] b. Install a first bolt between the first platform 2 and the support base 3 so that the first platform 2 can be detachably mounted on the support portion 34 of the support base 3 .

[0074] S5. Installation of motor 42:

[0075] The motor 42 is moved to the top of the column 1 by a crane and fixed thereto, so that the output shaft of the motor 42 is coaxially fixed to the screw rod 41 .

[0076] S6, installation of the second platform 6:

[0077] a. Insert the two extension plates 61 of the second platform 6 into the slots 241 of the docking seats 24 of the two adjacent first platforms 2 respectively;

[0078] b. Install a second bolt between the docking seat 24 and the extension plate 61 so that the extension plate 61 can be detachably mounted on the docking seat 24 .

[0079] The implementation principle of the construction method of an assembled subway maintenance platform in the embodiment of the present application is: the processed columns 1, the first platform 2 and the second platform 6 are transported to the site for assembly, which greatly improves the construction period of the subway maintenance platform and improves the construction efficiency of the subway maintenance platform; on the other hand, the assembled first platform 2 and the second platform 6 can be disassembled and installed so as to be able to be recycled and reused later; the support seat 3 is supported on the first platform 2, and the support seat 3 is driven to slide by the motor 42, which can adjust the height of the first platform 2, thereby facilitating maintenance personnel to perform all-round maintenance operations at different heights on the side of the subway or on the top of the subway, thereby improving the convenience of subway maintenance.

[0080] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An assembled subway maintenance platform, characterized by: The utility model comprises a column (1) and a first platform (2) arranged on the column (1); a connecting groove (21) penetrating the first platform (2) is provided on the plate surface of the first platform (2); the column (1) is slidably arranged in the connecting groove (21); the first platform (2) is slidably sleeved on the column (1) through the connecting groove (21); the column (1) is slidably installed with a support seat (3) for supporting the first platform (2); the support seat (3) is provided with a driving component (4) for driving the support seat (3) to slide along the length direction of the column (1); a sliding groove (11) is provided in the column (1), and two opposite side walls of the column (1) are provided with connecting grooves connected to the sliding groove (11) (12), the support seat (3) is slidably mounted on the sliding groove (11) and the two ends of the support seat (3) respectively pass through the two connecting grooves (12) and extend to the bottom of the first platform (2); the driving component (4) includes a screw rod (41) and a motor (42), the screw rod (41) is rotatably mounted in the sliding groove (11), the screw rod (41) is passed through the support seat (3) and is threadedly connected to the support seat (3), the motor (42) is fixed to one end of the column (1), the output shaft of the motor (42) passes through the side wall of the column (1) and is coaxially connected to the screw rod (41); a rack (13) is fixed to the side wall of the connecting groove (12), and the two ends of the rack (13) are along The column (1) is extended in the length direction; a rotating rod (31) is rotatably mounted on the side wall of the support seat (3); a gear (32) is fixed to one end of the rotating rod (31); the gear (32) and the rack (13) are meshed for transmission; the support seat (3) is detachably mounted with a limiter for limiting the rotation of the rotating rod (31); a rotating sleeve (33) located in the sliding groove (11) is rotatably mounted on the support seat (3); the rotating sleeve (33) is provided with an anti-sudden drop component (5) for limiting the speed of the support seat (3); the anti-sudden drop component (5) comprises a support rod (51) hinged to the rotating sleeve (33) and a rotating member (52) for driving the rotating sleeve (33) to rotate. An abutting ball head (511) for abutting against the inner peripheral wall of the sliding groove (11) is fixed to one end of the support rod (51) away from the rotating sleeve (33); a tension spring (512) is provided between the support rod (51) and the rotating sleeve (33); the tension spring (512) normally causes a gap to exist between the abutting ball head (511) and the inner peripheral wall of the sliding groove (11); the rotating member (52) is provided between the rotating sleeve (33) and the rotating rod (31) to drive the rotating rod (31) and the rotating sleeve (33) to rotate synchronously; a plurality of elastically arranged speed limiting rings (14) are fixed to the inner peripheral wall of the sliding groove (11); all the speed limiting rings (14) are arranged at intervals along the length direction of the column (1);The speed limiting ring (14) has a guide surface (141) for separating the contact ball head (511) from the speed limiting ring (14).

2. The assembled subway maintenance platform according to claim 1, characterized in that: The connecting groove (21) is located in the middle of the first platform (2), and the thickness of the first platform (2) gradually increases from the periphery to the middle.

3. The assembled subway maintenance platform according to claim 1, characterized in that: A plurality of the columns (1) and the first platforms (2) are arranged at intervals along the extension direction of the subway track, and a second platform (6) is detachably installed between two adjacent first platforms (2).

4. The assembled subway maintenance platform according to claim 3, characterized in that: The second platform (6) comprises two extension plates (61), the two extension plates (61) being respectively hinged to the side walls of two adjacent first platforms (2) close to each other, and the extension plates (61) being capable of flipping upwards toward the first platform (2); and a flipping member (7) for keeping the extension plate (61) flipped upwards toward the first platform (2) is provided between the extension plate (61) and the first platform (2).

5. A construction method for an assembled subway maintenance platform, based on the assembled subway maintenance platform according to any one of claims 1 to 4, comprising the following steps: S1. Opening of positioning grooves (8): opening a plurality of positioning grooves (8) at intervals on both sides along the extension direction of the subway track; S2, installation of the columns (1): installing the plurality of columns (1) in a one-to-one correspondence in the positioning grooves (8); S3, pouring concrete: pouring concrete into the positioning groove (8); S4, installation of the first platform (2): installing a plurality of the first platforms (2) on the pillars (1) in a one-to-one correspondence, and allowing the support base (3) to support the first platform (2); S5, installation of the motor (42): fixing the motor (42) to the column (1) and coaxially fixing the output shaft of the motor (42) to the screw rod (41); S6. Installation of the second platform (6): installing a plurality of the second platforms (6) in a one-to-one correspondence between two adjacent first platforms (2).

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