Construction platform and installation method for ship lift platform connecting bolt installation

Abstract

The present application relates to the installation device field of ship machine platform, disclose a kind of for ship lift platform connecting bolt installation construction platform and installation method, including two main hanger rods and two auxiliary hanger rods vertically inserted into top manhole;Still include the stop plate being arranged at the upper end of main hanger rod and auxiliary hanger rod, the lower surface of stop plate is equipped with limiting protrusion, main hanger rod and auxiliary hanger rod are also equipped with transverse bolt hole, and are equipped with sheep horn pin inside;Still include winch being arranged at the top of main hanger rod;Still include main walkway grating being laid on cross arm.The present application can complete the erection and connection work of suspension platform main component under high-risk, edge, water condition without construction personnel entering restricted space, effectively improve the safety factor, while the device effectively avoids platform movement through the cooperation of stop plate and sheep horn pin, meet the bearing and stability requirement, also will not damage ship lift platform steel structure paint and main structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of installation device of ship lift platform, in particular to a construction platform for installation of connecting bolts of ship lift platform and an installation method. BACKGROUND

[0002] The ship lift platform is composed of series of single platforms which are connected by bolts. When the ship lift platform is not in use, it is usually locked on the locking plate of the locking beam of the wharf in the maintenance position, and the upper surface of the ship lift platform is higher than the wharf surface at this time. When the ship lift platform is in use, it is lowered into the seawater to support the ship to be maintained, and is lifted to the ground position and locked on the locking beam of the locking plate of the wharf at the same time, and the upper surface of the ship lift platform is flush with the wharf surface at this time, which is convenient for the transfer of the ship to the shore. Such working conditions result in that, except for the situation that the ship lift platform is in the maintenance position, the upper part, left and right sides of the ship lift platform are the steel structure of the ship lift platform, and the lower side is the seawater, forming a narrow and semi-closed space, and the space is adjacent to the air and the water. The number of connecting bolts of the ship lift platform is large, and the weight is large. After the single platform of the ship lift is positioned in the maintenance position, how to connect the bolts between the adjacent platforms is a difficulty in the installation process.

[0003] The length of the north and south sides of the ship lift platform of a project is 45m. After the platform is lifted to the maintenance position, the platform is only 1.5m higher than the wharf surface, and the distance between the bottom of the main beam of the ship lift platform and the sea level is only 1.2m. According to the traditional construction method, a full scaffold is usually erected on land, or a lifting machine is used to assist in tightening the connecting bolts, or a tool platform is welded on the steel structure of the ship lift. On the sea surface, a traffic boat and a lifting machine are used to lift and tighten the bolts. However, according to the current requirements and working conditions, if the tool platform is welded on the steel structure of the ship lift platform, it can only be welded on land before the platform is lifted, which will affect the stability of the platform during lifting and the splicing adjustment of the platform, and will also damage the existing finished paint and product structure of the ship lift platform, reduce the service life of the ship lift platform, and cannot complete the disassembly of the tool platform after the installation of the connecting bolts is completed, which seriously affects the normal operation of the ship lift in the future, so the tool platform cannot be welded on the structure of the ship lift platform. At the same time, due to the water below, the erection of a full scaffold and the use of a lifting machine cannot meet the working condition requirements. The traffic boat and the lifting machine mode cannot enter the abdomen of the ship lift platform due to the limitation that the distance between the bottom of the main beam of the ship lift platform and the sea level is only 1.2m, and considering the tide factor, the traffic boat cannot enter the abdomen of the ship lift platform, and considering the influence of the surge on the stability, this working condition is also not suitable for the traffic boat and the lifting machine mode. Therefore, the above traditional construction methods are not suitable for this working condition.

[0004] To this end, the application provides a construction platform for installation of a ship lift platform connecting bolt and an installation method, which can facilitate and quickly complete erection and removal of a tooling platform under the premise of completely ensuring safety of construction personnel. SUMMARY

[0005] The application aims to solve the problem that the prior art cannot meet the bolt connection requirement between adjacent monomer platforms of a ship lift platform when the ship lift platform connecting bolt is located in a semi-closed space formed by air and water.

[0006] To solve the above technical problem, the application adopts the following technical scheme: a construction platform for installation of a ship lift platform connecting bolt, comprising two main hoisting rods and two auxiliary hoisting rods vertically inserted into a top water falling hole, a main male head seat arranged at the bottom of the main hoisting rod, and an auxiliary male head seat arranged at the bottom of the auxiliary hoisting rod; further comprising a cross arm, one end of the cross arm being provided with a main female head seat hingedly connected to the main male head seat, and the other end of the cross arm being provided with an auxiliary female head seat located outside the auxiliary male head seat; further comprising a pre-connection piece arranged between the auxiliary female head seat and the auxiliary male head seat and used for pre-connecting the auxiliary hoisting rod and the cross arm; the auxiliary male head seat and the auxiliary female head seat are further provided with matching bolt holes.

[0007] Further comprising a stop plate arranged at the upper end of the main hoisting rod and the auxiliary hoisting rod, the lower surface of the stop plate being provided with a limiting boss matching the size of the top water falling hole, and the main hoisting rod and the auxiliary hoisting rod below the limiting boss being further provided with a transverse bolt hole, and a L-shaped pin being arranged in the transverse bolt hole.

[0008] Further comprising a winch arranged at the top of the main hoisting rod and used for rotating the cross arm.

[0009] Further comprising a main walkway grating arranged on the cross arm, and the main walkway grating being connected to the cross arm through a locking device.

[0010] In particular, the pre-connection piece comprises a transverse bolt plate arranged on the auxiliary hoisting rod above the auxiliary male head seat, and the auxiliary female head seat is provided with an L-shaped lug matching the transverse bolt plate.

[0011] In particular, the steel wire of the winch passes through the inside of the main hoisting rod, and is fixedly connected to a lifting lug on the cross arm after passing out of the lower end of the main hoisting rod.

[0012] In particular, the edge of the main walkway grating away from the main hoisting rod is further provided with a handrail.

[0013] In particular, the locking device comprises a vertical clamping plate arranged at the end of the main walkway grating, and the vertical clamping plate is provided with a clamping hole matching the cross arm; further comprising a closing plate hingedly connected to the vertical clamping plate, and the closing plate and the vertical clamping plate are connected through a split pin.

[0014] In particular, the construction platform is provided with a plurality of construction platforms connected in series, and each of the two end construction platforms is provided with an inclined gangway.

[0015] The application also provides an installation method for installing a construction platform of a ship lift platform connecting bolt, comprising the following steps:

[0016] Step S1, the steel strands of the winch are loosened, so that the cross arm vertically drops and is coaxial with the main hanger, the main hanger and the auxiliary hanger are inserted from the top escape hole of the ship lift platform, the steel strands of the winch are tightened to lift the cross arm to 90° with the main hanger, and the cross arm is pre-connected with the auxiliary hanger by using the pre-connection piece;

[0017] Step S2, two pull ropes are inserted from the top escape hole beside the main hanger and the auxiliary hanger, and the pull ropes are fixed at the end heads of the two ends of the main step grid, and then the pull ropes are synchronously lifted, so that the main step grid is lifted and placed on the cross arm;

[0018] Step S3, the construction personnel walk to the auxiliary hanger through the main step grid, and the auxiliary female head seat of the cross arm and the auxiliary male head seat of the hanger are connected by using the bolt; the main step grid is locked on the cross arm by using the locking device;

[0019] Step S4, the shepherd's hook pin is inserted into the transverse pin hole below the limiting boss;

[0020] Step S5, the handrail rod is erected;

[0021] Step S6, steps S1-S5 are repeated, the erection of the two main step grids is sequentially completed, the auxiliary step grid is laid on the edge between the two main step grids, and the insertion piece on the lower surface of the auxiliary step grid is inserted into the gap of the main step grid and locked.

[0022] Compared with the prior art, the application has the following advantages and beneficial effects: in the high-risk, edge and water conditions, the construction personnel do not need to enter the limited space, the erection and connection of the main components of the suspended platform can be completed, the safety factor is effectively improved, the platform movement is effectively avoided by the cooperation of the stop plate and the shepherd's hook pin, the bearing and stability requirements are met, the ship lift platform steel structure paint and the main structure are not damaged, and the construction progress is effectively accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a single construction platform structure diagram in the application.

[0024] Figure 2 It is a whole structure diagram of the construction platform and the ship lift platform in the application.

[0025] Figure 3 It is a cross arm installation step diagram.

[0026] Figure 4 It is a main hanger, auxiliary hanger and cross arm structure diagram.

[0027] Figure 5 Figure 2 is a schematic view of the connection relationship between the main walkway grating and the cross arm.

[0028] The interpretation of each reference in the figure is as follows: top manhole - 1; main hoist - 2; main male head seat - 21; auxiliary hoist - 3; auxiliary female head seat - 31; cross arm - 4; main female head seat - 41; auxiliary female head seat - 42; pre-connector - 5; transverse bolt plate - 51; L-shaped lug - 52; stop plate - 6; limiting boss - 61; knuckle pin - 62; winch - 7; main walkway grating - 8; vertical clamping plate - 81; clamping hole - 82; closing plate - 83; cotter pin - 84; auxiliary walkway grating - 9. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, so as to have a further understanding of the concept of the present application, the technical problems solved, the technical features constituting the technical solutions and the technical effects brought by the present application.

[0030] As shown in Figures 1-5 Figure 1, a construction platform for installing the connecting bolts of the ship lift platform, comprising two main hoists 2 and two auxiliary hoists 3 vertically inserted into the top manhole 1, the bottom of the main hoist 2 is provided with a main male head seat 21, and the bottom of the auxiliary hoist 3 is provided with an auxiliary male head seat 31; further comprising a cross arm 4, one end of the cross arm 4 is provided with a main female head seat 41 hinged to the main male head seat 21, and the other end of the cross arm 4 is provided with an auxiliary female head seat 42 located outside the auxiliary male head seat 31; further comprising a pre-connector 5 arranged between the auxiliary female head seat 42 and the auxiliary male head seat 31, used for pre-connecting the auxiliary hoist 3 and the cross arm 4; the auxiliary male head seat 31 and the auxiliary female head seat 42 are further provided with matching bolt holes;

[0031] Further comprising a stop plate 6 arranged at the upper end of the main hoist 2 and the auxiliary hoist 3, the lower surface of the stop plate 6 is provided with a limiting boss 61 matching the size of the top manhole 1, and the main hoist 2 and the auxiliary hoist 3 below the limiting boss 61 are further provided with transverse bolt holes, and the transverse bolt holes are provided with knuckle pins 62;

[0032] Further comprising a winch 7 arranged at the top of the main hoist 2 and used for rotating the cross arm 4;

[0033] Further comprising a main walkway grating 8 laid on the cross arm 4, and the main walkway grating 8 is connected with the cross arm 4 through locking devices.

[0034] In the present application, the main boom 2 and the auxiliary boom 3 are both circular steel pipes with an outer diameter of 51 mm, a material of Q235, and a length of 2500 mm; the stop plate 6 has an outer diameter of 150 mm, a limiting boss 61 with an outer diameter of 100 mm, and a top water falling hole 1 with a hole diameter of 100 mm; when the limiting boss 61 below the stop plate 6 is inserted into the top water falling hole 1, the main boom 2 and the auxiliary boom 3 can be effectively prevented from swinging and axial movement, the edge of the stop plate 6 serves as a main force bearing component and is in close contact with the contact surface of the ship lift platform, the horizontal bolt hole below the limiting boss 61 is provided with a shepherd's crook pin 62 which is a Q235 round steel welded with a diameter of 12 mm, and the main function of the shepherd's crook pin 62 is to prevent the axial movement of the main boom 2, and the stop plate 6 above cooperates with the top water falling hole 1 on both sides of the top water falling hole 1 to lock the main boom 2. The main walkway grating 8 is welded by a square tube frame and a grating, and mainly bears the load of the construction personnel and the appliance. The square tube has a cross-sectional size of 40 mm*30 mm*3 mm and a material of Q235. The square tube frame has a size of 3000 mm*800 mm. The grating has a material of Q235, a thickness of 2 mm, a height of 30 mm, and a length of 2900 mm. The locking devices on both sides of the same main walkway grating 8 are arranged at different intervals, one side at an interval of 600 mm and the other side at an interval of 500 mm, so that when the adjacent gratings are fixed on the same cross arm 4, they will not conflict.

[0035] As a preferred embodiment, the pre-connector 5 includes a horizontal bolt plate 51 arranged on the auxiliary boom 3 above the auxiliary male head seat 31, and an L-shaped hanging ear 52 arranged above the auxiliary female head seat 42 and matched with the horizontal bolt plate 51.

[0036] In the embodiment, a specific structure of the pre-connector is provided, mainly including a transverse bolt plate 51 arranged on the auxiliary boom 3 above the auxiliary male head base 31, and an L-shaped hanging ear 52 arranged above the auxiliary female head base 42 and matched with the transverse bolt plate 51. The limiting boss 61 of the main boom 2 and the auxiliary boom 3 does not fall into the top water hole 1, facilitating the main boom 2 and the auxiliary boom 3 to be lifted to different degrees before the cross arm 4 is connected with the auxiliary boom 3, avoiding that the transverse bolt plate 51 on the auxiliary boom 3 blocks the L-shaped hanging ear 52 on the cross arm 4 when the cross arm 4 rotates upward, and after the winch 7 drives the cross arm 4 to rotate to an angle of 90° with the main boom 2, the top of the auxiliary boom 3 is inclined to the direction of the main boom 2, and the auxiliary boom 3 is adjusted upward or downward, so that the transverse bolt plate 51 on the auxiliary male head base 31 at the bottom of the auxiliary boom 3 is aligned with the L-shaped hanging ear 52, then the auxiliary boom 3 is returned to align the transverse bolt plate 51 with the opening of the L-shaped hanging ear 52, and finally the main boom 2 and the auxiliary boom 3 are slowly lowered synchronously, so that the limiting boss 61 falls into the top water hole 1, the pre-connection of the main boom 2 and the auxiliary boom 3 is completed, the workers can walk on the main walkway grating 8 to perform the bolt connection between the auxiliary female head base 42 and the auxiliary male head base 31 of the cross arm 4, and the workers can also perform the fixed connection between the cross arm 4 and the main walkway grating 8, thereby forming double fixing and ensuring firm connection.

[0037] As a preferred embodiment, the steel wire of the winch 7 passes through the inside of the main boom 2 and is fixedly connected with the lifting lug on the cross arm 4 after passing out of the lower end of the main boom 2.

[0038] In the embodiment, a specific connection mode of the winch, the cross arm 4 and the main boom 2 is provided. The winch 7 is arranged on the top of the main boom 2 and fixed by bolts. A steel wire with a diameter of 4 mm is arranged in the inside of the main boom 2, one end of the steel wire is connected to the winch 7, and the other end of the steel wire is connected to the cross arm 4, and the steel wire is responsible for the lifting of the cross arm 4.

[0039] As a preferred embodiment, the edge of the main walkway grating 8 away from the main boom 2 is further provided with a handrail.

[0040] As a preferred embodiment, the locking device includes a vertical clamping plate 81 arranged at the end of the main walkway grating 8, and the vertical clamping plate 81 is provided with a clamping hole 82 matched with the cross arm 4; and the locking device further includes a closing plate 83 hinged to the vertical clamping plate 81, and the closing plate 83 and the vertical clamping plate 81 are pinned by a split pin 84.

[0041] In the embodiment, the vertical clamping plate 81 is used as the connecting piece of the main catwalk grating 8 and the cross arm 4, and the two are engaged through the clamping hole 82 on the vertical clamping plate 81 and the cross arm 4. Then, the construction personnel enters the installation platform through the main catwalk grating 8, hooks the closing plate 83 at the end of the main catwalk grating 8, and inserts the split pin 84, so that the closing plate 83 closes the clamping hole 82, and the vertical clamping plate 81 and the main catwalk grating 8 are firmly fixed on the cross arm 4, thereby preventing the main catwalk grating 8 from tilting or axially moving, and improving the stability of the construction platform.

[0042] As a preferred embodiment, the construction platform is provided with a plurality of construction platforms connected in series, and each of the two end construction platforms is provided with an inclined gangway.

[0043] In the embodiment, the inclined gangway is a Q235 material square tube frame welded with a grating, and is a main access channel. Handrails are arranged on both sides to prevent falling.

[0044] The application also provides an installation method for installing a construction platform on a ship lift platform connecting bolt, comprising the following steps:

[0045] Step S1, the steel wire of the winch 7 is loosened, so that the cross arm 4 vertically drops and is coaxial with the main hanger 2, the main hanger 2 and the auxiliary hanger 3 are inserted from the top escape hole 1 of the ship lift platform, the steel wire of the winch 7 is tightened to lift the cross arm 4 to 90° with the main hanger 2, and the cross arm 4 and the auxiliary hanger 3 are pre-connected through the pre-connector 5;

[0046] Step S2, two pull ropes are put into the top escape hole 1 from the side of the main hanger 2 and the auxiliary hanger 3, and are fixed at the end of the main catwalk grating 8, and then the pull ropes are simultaneously lifted, so that the main catwalk grating 8 is lifted and placed on the cross arm 4;

[0047] Step S3, the construction personnel walks to the auxiliary hanger 3 through the main catwalk grating 8, and connects the auxiliary female head seat 42 of the cross arm 4 and the auxiliary male head seat 31 of the hanger through a bolt; and the main catwalk grating 8 is locked on the cross arm 4 through the locking device;

[0048] Step S4, the sheep horn pin 62 is inserted into the transverse bolt hole below the limiting boss 61;

[0049] Step S5, the handrail rod is erected;

[0050] Step S6, steps S1-S5 are repeated, the erection of the two main catwalk gratings 8 is sequentially completed, the auxiliary catwalk grating 9 is laid on the edge between the two main catwalk gratings 8, and the insertion piece on the lower surface of the auxiliary catwalk grating 9 is inserted into the gap of the main catwalk grating 8 to be locked.

[0051] In step S1, the pre-connection of the cross arm 4 and the auxiliary suspender 3 by the pre-connection piece 5 can be used to solve the platform erection under the conditions that personnel cannot enter, fulcrum cannot be fixed, and traditional construction methods cannot be used under the conditions of water, edge, and semi-closed space. After the pre-connection of the cross arm 4 and the auxiliary suspender 3 by the pre-connection piece 5, the main stepway grating 8 is laid.

[0052] In step S2, the two ends of the main stepway grating 8 are fixed by the pull rope, which can be used to lay the main stepway grating 8 under the premise that the construction personnel cannot enter.

[0053] In step S3, after the main stepway grating 8 is laid, the construction personnel can safely enter, and the auxiliary female head seat 42 of the cross arm 4 is pinned with the auxiliary male head seat 31 of the auxiliary suspender 3 by the pin, so as to ensure the stability and firmness of the platform main body. After the main stepway grating 8 is laid and pinned, the main stepway grating 8 is locked by the locking device, so as to achieve the purpose of firmly fixing the main stepway grating 8.

[0054] In step S6, the auxiliary stepway grating 9 is used as a force bearing piece for connecting adjacent main stepway gratings 8, which is a Q235 material square tube frame plus a welded grating. Two insertion pieces are arranged on the lower surface of each side, which are inserted into the grating grid of the main stepway grating 8 to prevent movement. At this time, the auxiliary stepway grating 9 is overlaid on the two main stepway gratings 8.

[0055] In the description of the present application, "connection", "fixing" can be fixed connection, processing, welding, or mechanical connection. The specific meaning of the above terms in the present application is understood as above.

[0056] In the description of the present application, the terms "center", "upper", "lower", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element must have a specific orientation, so it cannot be understood as a limitation on the present application.

[0057] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; it can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A construction platform for installing connecting bolts on a ship lift platform, characterized in that, It includes two main hangers (2) and two auxiliary hangers (3) vertically inserted into the top drain hole (1). The main hangers (2) are provided with a male head seat (21) at the bottom, and the auxiliary hangers (3) are provided with a female head seat (31) at the bottom. It also includes a crossbeam (4). One end of the crossbeam (4) is provided with a female head seat (41) hinged to the male head seat (21), and the other end is provided with a female head seat (42) located outside the female head seat (31). It also includes a female head seat (42) provided on the female head seat (31). Between the male and female connectors (31) and the female connector (42), a pre-connector (5) is provided for pre-connecting the male connector (3) and the crossarm (4). The pre-connector (5) includes a transverse pin plate (51) on the male connector (3) above the female connector (31), and an L-shaped lug (52) matching the transverse pin plate (51) is provided above the female connector (42). The male connector (31) and the female connector (42) are also provided with matching pin holes. It also includes a stop plate (6) set on the upper end of the main rod (2) and the auxiliary rod (3). The lower surface of the stop plate (6) is provided with a limiting boss (61) that matches the size of the top drain hole (1). The main rod (2) and the auxiliary rod (3) below the limiting boss (61) are also provided with a transverse pin hole, and a ram's horn pin (62) is provided in the transverse pin hole. It also includes a winch (7) set on the top of the main boom (2) and used to rotate the crossarm (4). The steel strand of the winch (7) passes through the inside of the main boom (2) and passes out at the lower end of the main boom (2) and is fixedly connected to the lug on the crossarm (4). It also includes a main walkway grid (8) laid on the crossbeam (4), which is connected to the crossbeam (4) by a locking device.

2. The construction platform for installing connecting bolts on a ship lift platform as described in claim 1, characterized in that, The main walkway grille (8) is also provided with a handrail on the side away from the main hanger (2).

3. The construction platform for installing connecting bolts on a ship lift platform as described in claim 1, characterized in that, The locking device includes a vertical clamping plate (81) located at the end of the main walkway grid (8), the vertical clamping plate (81) having a slot (82) that matches the crossbeam (4); it also includes a closing plate (83) hinged to the vertical clamping plate (81), the closing plate (83) and the vertical clamping plate (81) being connected by a cotter pin (84).

4. The construction platform for installing connecting bolts on a ship lift platform as described in claim 1, characterized in that, The construction platforms are arranged in a series of interconnected units, with each end of the construction platform equipped with an inclined gangway.

5. An installation method for a construction platform for installing connecting bolts on a ship lift platform as described in claim 1, characterized in that, Includes the following steps: Step S1: Loosen the steel strands of the winch (7) so that the crossarm (4) hangs vertically and is coaxial with the main boom (2). Insert the main boom (2) and the auxiliary boom (3) through the drain hole (1) at the top of the ship lift platform. Tighten the steel strands of the winch (7) to raise the crossarm (4) to 90° with the main boom (2). Use the pre-connector (5) to pre-connect the crossarm (4) and the auxiliary boom (3). Step S2: Insert two pull ropes into the top drain hole (1) on the side of the main rod (2) and the auxiliary rod (3), and fix the pull ropes at both ends of the main walkway grid (8). Then lift the pull ropes simultaneously to lift the main walkway grid (8) and place it on the crossbeam (4). In step S3, the construction workers walk through the main walkway grid (8) to the auxiliary hanger (3) and use bolts to connect the auxiliary female head (42) of the crossbeam (4) and the auxiliary male head (31) of the hanger; and use the locking device to lock the main walkway grid (8) onto the crossbeam (4); Step S4: Insert the horn pin (62) into the transverse pin hole below the limiting boss (61). Step S5: Erect handrails; Step S6, repeat steps S1 to S5, and complete the construction of the two main walkway grids (8) in sequence, and lay the secondary walkway grid (9) at the edge between the two main walkway grids (8), and use the inserts on the lower surface of the secondary walkway grid (9) to insert into the gaps of the main walkway grid (8) and lock them in place.

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