Barge unloading approach bridge

Abstract

The utility model belongs to the technical field of barge approach bridges, and particularly relates to a barge unloading approach bridge. The multiple ship body limiting pipe piles are arranged on the seabed on the two sides of the barge and used for limiting the ship body, the problem that the ship body shakes due to too large storm waves in the ship stopping and unloading process can be effectively solved, and the unloading safety can be improved. The whole bridge body is formed by welding high-strength H-shaped steel, the strength is high, the loading load is large, an excavator and a heavy car can be allowed to directly enter a ship for operation through the approach bridge, goods allocation turnover can be effectively reduced, and efficiency is improved. The heights of the second-section bridge body and the third-section bridge body can be adjusted according to the draft depth of the barge, so that the angle between the barge body and the ground becomes small, and the safety of passing vehicles is improved. The barge unloading approach bridge provided by the utility model can realize full-electric operation, is high in automation degree, reduces the labor intensity of workers, and improves the working efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of barge approach bridges, and in particular relates to a barge unloading approach bridge. Background Art

[0002] Barge unloading is usually carried out at deep-water docks, using gantry cranes or simple approach bridges. Gantry crane unloading requires two reverse transfers, and the unloading cycle is long. Although excavators and heavy vehicles can be driven onto the ship using a simple floating bridge, it is only possible when the weather is calm and good. When encountering strong winds and waves, the hull will shake severely, posing a greater threat to the safety of the bridge body and construction vehicles and personnel. At the same time, during the unloading process, as the cargo in the ship's hold continues to decrease, the hull will continue to rise, and it will be higher and higher from the dock ground. The angle of the ordinary unloading approach bridge from the dock ground will become larger and larger, and the large slope will pose a very high safety hazard to heavy vehicles. How to improve efficiency while improving overall safety and reliability is a technical problem that needs to be solved. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a barge unloading approach bridge, and the utility model specifically includes the following contents:

[0004] A barge unloading approach bridge comprises a plurality of hull limiting pipe piles, a base structure layer, a bridge body, a gantry bracket group, and a limiting device group.

[0005] The plurality of hull limiting pipe piles are arranged on the seabed on both sides of the barge to limit the hull; preferably, the number of the hull limiting pipe piles is an even number, and they are symmetrically arranged in pairs on both sides of the bow of the barge close to the approach bridge, and the distance between the hull limiting pipe piles on both sides should be slightly larger than the width of the bow, so that the barge can be docked smoothly and the limiting function can be effectively realized;

[0006] The base structure layer is provided with a limit device slide rail group and a bridge tail slide rail; the specific number and shape of the slide rails in the limit device slide rail group and the bridge tail slide rail can be set according to actual needs, and no excessive restrictions are made here;

[0007] The bridge body is arranged on the base structure layer. The bridge body includes a front-section bridge body, a middle-section bridge body, and a rear-section bridge body. One end of the front-section bridge body extends out of the front end of the base structure layer, and the other end is rotatably connected to one end of the middle-section bridge body. The extended end of the front-section bridge body is placed on the bow of the barge, which is used to connect the barge and the bridge body. Two sets of first rolling devices are arranged on both side surfaces of the middle-section bridge body. The first rolling devices are in contact with the vertical guide plates on the gantry supports, which play a guiding role during the lifting and lowering process of the bridge body. At the same time, since it is a rolling connection, it will not increase the resistance of the lifting and lowering. One end of the rear-section bridge body is rotatably connected to the other end of the middle-section bridge body, and the other end is slidably connected to the base structure layer through a bridge tail slide rail.

[0008] The gantry support group is arranged on the base structure layer. The gantry support group includes two gantry supports respectively arranged on both sides of the middle-section bridge body. The gantry support is of a "冂"-shaped structure. The gantry support includes a top horizontal support and two vertical supports respectively connected to both ends of the top horizontal support. To improve the strength, reinforcing support rods, or reinforcing plates, reinforcing ribs and other structures can be arranged around the vertical supports as needed. A first lifting device and a second lifting device are arranged on the top horizontal support. Among them, the first lifting device is preferably arranged at one end close to the front-section bridge body, and the second lifting device preferably includes at least two second lifting mechanisms. The two second lifting mechanisms are respectively arranged at positions close to the head and tail ends of the middle-section bridge body. The first lifting device is connected to the front-section bridge body and is used to drive the front-section bridge body to rise and fall. The second lifting device is connected to the middle-section bridge body and is used to drive the middle-section bridge body to rise and fall. Vertical guide plates are arranged on the vertical supports, and the vertical guide plates are in contact with the first rolling devices on both side surfaces of the middle-section bridge body.

[0009] The limit device group is arranged on the base structure layer and is slidably connected to the base structure layer through a limit device slide rail group. The limit device slide rail group is horizontally arranged relative to the two gantry supports, and the main part is located between the two gantry supports, and both ends extend out of the outer sides of the two gantry supports. When the middle-section bridge body descends to contact the base structure layer, the limit device slides along the limit device slide rail group to the outside of the gantry support, which can prevent the obstruction of the descent of the bridge body. When the middle-section bridge body rises to a certain height, the limit device slides along the limit device slide rail group to both sides of the middle-section bridge body and abuts against the lower part of the middle-section bridge body, playing a supporting role, which can improve the strength of the bridge body and prevent the bridge body from being damaged due to bearing weight.

[0010] Preferably, the number of the hull limit pipe piles is four; and / or, the inner layer of the hull limit pipe pile is a reinforced concrete structure, the middle layer is a thick-walled spiral steel pipe, and the outer layer is coated with an anti-corrosion coating; and / or, the bottom end of the hull limit pipe pile is deeply buried in the seabed by a pile driver.

[0011] Preferably, the base structure layer is a concrete structure; and / or the bridge body is formed by welding H-shaped steel.

[0012] Preferably, the first rolling device comprises two ribs arranged opposite to each other, two bearings and a cylindrical roller with a hollow interior, the two bearings are respectively arranged on the inner sides of the two ribs and the inner rings of the bearings are fixedly connected to the corresponding ribs, and the two ends of the cylindrical roller are respectively sleeved on the outer rings of the two bearings. Here is a specific structural example of a first rolling device, and it should be noted that the first rolling device can also be replaced by other reasonable specific structures as long as the functions defined in the utility model can be achieved.

[0013] Preferably, at least one set of second rolling devices are provided at each end of the middle section of the bridge body. The structure of the second rolling device is the same as that of the first rolling device. The second rolling device is arranged at the connection between the middle section of the bridge body and other bridge bodies. During the lifting and lowering process of the middle section of the bridge body, relative rotation will occur between the middle section of the bridge body and other bridge bodies. The second rolling device can play a role of support and rotation.

[0014] Preferably, the front bridge body includes one bridge body and two bridge bodies, the middle bridge body includes three bridge bodies, and the last bridge body includes four bridge bodies and five bridge bodies; the first to fifth bridge bodies are rotationally connected in sequence through hinge ears; the ends of the five bridge bodies are slidably connected to the base structure layer through a bridge tail slide rail. It should be noted that the bridge bodies can also be connected by other connection methods such as shaft rotation connection, bearing rotation connection, hinge rotation connection, etc., as long as the rotation connection can be achieved and the strength requirements of the device are met. In addition, the specific connection method of the end of the five-section bridge body and the base structure layer through the bridge tail slide rail can be set according to actual conditions. For example, it can be a connection method through a slide rail + pulley, or a connection method through a slide rail + slider.

[0015] Preferably, the first lifting device and the second lifting device are both electric hoists; the two-stage bridge body and the three-stage bridge body are respectively provided with lifting rings, and the two-stage bridge body and the three-stage bridge body are respectively connected to the electric hoists through the lifting rings.

[0016] Preferably, the gantry support further comprises a plurality of gantry support embedded parts, the gantry support embedded parts are embedded in the base structure layer, and the vertical support is connected to the gantry support embedded parts. The specific number, shape and embedded depth of the embedded parts can be set according to actual needs, and the role of the embedded parts is to increase the stability of the connection between the gantry support and the base structure layer.

[0017] Preferably, the limit device group includes two limit devices respectively arranged under the two gantry supports, the limit device includes a step-type support frame, a transmission device and a power device, the step-type support frame is stepped toward the side between the two gantry supports, the bottom end of the step-type support frame is slidably connected to the base structure layer through the limit device slide rail group; the step-type support frame is connected to the power device through the transmission device. When the middle section of the bridge body is raised to different heights, the step-type support frame can select different step-support bridge bodies to adapt to different height requirements.

[0018] Preferably, the limiting device also includes a control device, the transmission device includes a screw reducer and a screw, and the power device is a motor; the input end of the screw reducer is connected to the motor, and the output end is connected to the screw; the control device is connected to the motor signal for remotely controlling the motor.

[0019] Beneficial effects of the utility model:

[0020] (1) The barge unloading approach bridge provided by the utility model has a plurality of hull limiting pipe piles arranged on the seabed on both sides of the barge for limiting the hull, which can effectively solve the shaking of the hull caused by excessive wind and waves during the process of stopping and unloading, and can improve the safety of unloading.

[0021] (2) The barge unloading approach bridge provided by the utility model is made of high-strength H-shaped steel welded throughout the bridge body, which has high strength and large load-bearing capacity. It can allow excavators and heavy vehicles to pass through the approach bridge directly onto the ship for operation, which can effectively reduce cargo turnover and improve efficiency.

[0022] (3) The barge unloading approach bridge provided by the utility model has a second-stage bridge body and a third-stage bridge body whose heights can be adjusted according to the draft depth of the barge, so that the angle between the hull and the ground becomes smaller, thereby improving the safety of passing vehicles.

[0023] (4) The barge unloading approach bridge provided by the utility model can realize full electric operation, with a high degree of automation, reducing the labor intensity of workers and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the device disclosed by the utility model when the barge is heavily loaded;

[0025] Figure 2 It is a front view of the device disclosed by the utility model when the barge is heavily loaded;

[0026] Figure 3 It is a top view of the device disclosed by the utility model when the barge is heavily loaded;

[0027] Figure 4 It is a three-dimensional diagram of the device disclosed by the utility model when the barge is lightly loaded;

[0028] Figure 5 It is a structural schematic diagram of the limiting device in the device disclosed in the utility model;

[0029] Figure 6 It is a structural schematic diagram of the gantry support group in the device of the utility model;

[0030] Figure 7 It is a structural schematic diagram of the middle bridge body in the device of the utility model;

[0031] Figure 8 It is a schematic diagram of the positional relationship between the gantry bracket embedded parts, the limit device slide rail group and the bridge tail slide rail in the device of the utility model;

[0032] Fig. 9 It is a structural schematic diagram of the first rolling device in the device of the utility model;

[0033] Fig.10 It is a structural schematic diagram of the hinge ear in the device of the utility model.

[0034] In the attached drawings: 1-barge, 2-hull limiting pipe piles, 3-base structure layer, 4-first section of bridge body, 5-second section of bridge body, 6-third section of bridge body, 7-fourth section of bridge body, 8-fifth section of bridge body, 9-power unit, 10-second lifting device (4 pcs.), 11-first lifting device (2 pcs.), 12-gantry bracket, 13-limiting mechanism, 14-limiting device slide rail group, 15-bridge tail slide rail, 16-hinged ear, 17-lifting ring, 18-first rolling device, 19-stepped support frame, 20-driving mechanism, 21-screw reducer, 22-motor, 23-screw, 24-gantry bracket embedded parts, 25-top horizontal bracket, 26-vertical guide plate, 27-bearing, 28-cylindrical roller. DETAILED DESCRIPTION

[0035] The utility model is described in detail below in conjunction with the accompanying drawings and specific implementation methods. The embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions of the utility model described in the claims.

[0036] A barge unloading approach bridge, comprising a plurality of hull limiting pipe piles 2, a base structure layer 3, a bridge body, 12 groups of gantry brackets, and a limiting device group. The plurality of hull limiting pipe piles 2 are arranged on the seabed on both sides of the barge 1 for limiting the hull. Preferably, the number of the hull limiting pipe piles 2 is an even number, and they are symmetrically arranged in pairs on both sides of the bow of the barge 1 close to the approach bridge. The distance between the hull limiting pipe piles 2 on both sides should be slightly larger than the width of the bow, so as to ensure that the barge 1 can dock smoothly and effectively realize the limiting function. A limiting device slide rail group 14 and a bridge tail slide rail 15 are arranged on the base structure layer 3. The specific number and shape of the slide rails in the limiting device slide rail group 14 and the bridge tail slide rail 15 can be set according to actual needs and will not be limited too much here. The bridge body is arranged on the base structure layer. The bridge body includes a front section bridge body, a middle section bridge body, and a rear section bridge body. One end of the front section bridge body extends out of the front end of the base structure layer 3, and the other end is rotatably connected to one end of the middle section bridge body. The extended end of the front section bridge body is placed on the bow of the barge 1 for connecting the barge 1 and the bridge body. Two groups of first rolling devices 18 are arranged on both sides of the middle section bridge body. The first rolling devices 18 are in contact with the vertical guide plates 26 on the gantry brackets 12, playing a guiding role during the lifting and lowering of the bridge body. At the same time, since it is a rolling connection, it will not increase the resistance of the lifting and lowering. One end of the rear section bridge body is rotatably connected to the other end of the middle section bridge body, and the other end is slidably connected to the base structure layer 3 through the bridge tail slide rail 15. The 12 groups of gantry brackets are arranged on the base structure layer 3. The 12 groups of gantry brackets include two gantry brackets 12 respectively arranged on both sides of the middle section bridge body. The gantry bracket 12 is of a "冂" type structure. The gantry bracket 12 includes a top horizontal bracket 25 and two vertical brackets respectively connected to both ends of the top horizontal bracket 25. To improve the strength, reinforcing support rods, reinforcing plates, reinforcing ribs and other structures can be arranged around the vertical brackets according to needs. A first lifting device 11 and a second lifting device 10 are arranged on the top horizontal bracket 25. Among them, the first lifting device 11 is preferably arranged at one end close to the front section bridge body, and the second lifting device 10 preferably includes at least two second lifting mechanisms, and the two second lifting mechanisms are respectively arranged at positions close to the head and tail ends of the middle section bridge body. The first lifting device 11 is connected to the front section bridge body for driving the front section bridge body to rise and fall, and the second lifting device 10 is connected to the middle section bridge body for driving the middle section bridge body to rise and fall. Vertical guide plates 26 are arranged on the vertical brackets, and the vertical guide plates 26 are in contact with the first rolling devices 18 on both sides of the middle section bridge body. The limiting device group is arranged on the base structure layer 3 and is slidably connected to the base structure layer 3 through the limiting device slide rail group 14. The limiting device slide rail group 14 is horizontally arranged compared with the two gantry brackets 12, and the main body part is located between the two gantry brackets 12, and both ends extend out of the outer sides of the two gantry brackets 12.When the middle section of the bridge body descends to contact the base structure layer 3, the limiter 13 slides along the limiter slide rail set 14 to the outside of the gantry support 12, which can prevent the bridge body from being blocked from descending. When the middle section of the bridge body rises to a certain height, the limiter 13 slides along the limiter slide rail set 14 to both sides of the middle section of the bridge body and rests against the bottom of the middle section of the bridge body, playing a supporting role, which can improve the strength of the bridge body and prevent the bridge body from being damaged due to load bearing.

[0037] In one embodiment of the utility model, the number of the hull limiting pipe piles 2 is four; the inner layer of the hull limiting pipe piles 2 is a reinforced concrete structure, the middle layer is a thick-walled spiral steel pipe, and the outer layer is coated with an anti-corrosion coating; the bottom end of the hull limiting pipe pile 2 is deeply buried in the seabed by a pile driver.

[0038] In an embodiment of the present invention, the base structure layer 3 is a concrete structure; and / or the bridge body is formed by welding H-shaped steel.

[0039] In one embodiment of the present invention, the first rolling device 18 includes two ribs arranged opposite to each other, two bearings 27 and a cylindrical roller 28 with a hollow interior, wherein the two bearings 27 are respectively arranged on the inner sides of the two ribs and the inner rings of the bearings 27 are fixedly connected to the corresponding ribs, and the two ends of the cylindrical roller 28 are respectively sleeved on the outer rings of the two bearings 27. Here, a specific structural example of the first rolling device 18 is given, and it should be noted that the first rolling device 18 can also be replaced by other reasonable specific structures as long as the functions defined in the present invention can be achieved.

[0040] In one embodiment of the utility model, at least one set of second rolling devices are provided at each end of the middle bridge body. The structure of the second rolling device is the same as the first rolling device 18. The second rolling device is arranged at the connection between the middle bridge body and other bridge bodies. During the lifting process of the middle bridge body, relative rotation will occur between the middle bridge body and other bridge bodies. The second rolling device can play a role of support and rotation.

[0041] In one embodiment of the utility model, the front bridge body includes a first bridge body 4 and a second bridge body 5, the middle bridge body includes a third bridge body 6, and the last bridge body includes a fourth bridge body 7 and a fifth bridge body 8; the first to fifth bridge bodies 8 are rotationally connected in sequence through hinge ears 16; the ends of the five bridge bodies are slidably connected to the base structure layer 3 through a bridge tail slide rail 15. It should be noted that the bridge bodies can also be connected by other connection methods such as shaft rotation connection, bearing rotation connection, hinge rotation connection, etc., as long as the rotation connection can be achieved and the strength requirements of the device are met. In addition, the specific connection method in which the ends of the five bridge bodies are slidably connected to the base structure layer 3 through the bridge tail slide rail 15 can be set according to actual conditions. For example, it can be a connection method through a slide rail + pulley, or a connection method through a slide rail + slider.

[0042] In one embodiment of the utility model, the first lifting device 11 and the second lifting device 10 are both electric hoists; the two-stage bridge body and the three-stage bridge body are respectively provided with lifting rings 17, and the two-stage bridge body and the three-stage bridge body are respectively connected to the electric hoists through the lifting rings 17.

[0043] In one embodiment of the utility model, the gantry bracket 12 further includes a plurality of gantry bracket embedded parts 24, the gantry bracket embedded parts 24 are embedded in the base structure layer 3, and the vertical bracket is connected to the gantry bracket embedded parts 24. The specific number, shape and embedded depth of the embedded parts can be set according to actual needs, and the role of the embedded parts is to increase the stability of the connection between the gantry bracket 12 and the base structure layer 3.

[0044] In one embodiment of the utility model, the limit device group includes two limit devices 13 respectively arranged under the two gantry brackets 12, the limit device 13 includes a step-type support frame 19 and a driving mechanism 20, the driving mechanism 20 includes a transmission device and a power device 9, the step-type support frame 19 is stepped toward the side between the two gantry brackets 12, the bottom end of the step-type support frame 19 is slidably connected to the base structure layer 3 through the limit device slide rail group 14; the step-type support frame 19 is connected to the power device 9 through the transmission device. When the middle section of the bridge body is raised to different heights, the step-type support frame 19 can select different step-support bridge bodies to adapt to different height requirements.

[0045] In one embodiment of the utility model, the limiting device 13 also includes a control device, the transmission device includes a screw reducer 21 and a screw 23, and the power device 9 is a motor 22; the input end of the screw reducer 21 is connected to the motor 22, and the output end is connected to the screw 23; the control device is connected to the motor 22 signal for remotely controlling the motor 22.

[0046] The barge unloading approach bridge provided by the utility model is provided with a plurality of hull limiting pipe piles 2 on the seabed on both sides of the barge 1, which are used to limit the hull, and can effectively solve the shaking of the hull caused by excessive wind and waves during the process of stopping and unloading, and can improve the safety of stopping and unloading. The entire bridge body is welded with high-strength H-shaped steel, which has high strength and large load-bearing capacity, and can allow excavators and heavy vehicles to directly enter the ship through the approach bridge for operation, which can effectively reduce cargo turnover and improve efficiency. The second-section bridge body 5 and the third-section bridge body 6 can adjust the height according to the draft depth of the barge 1, so that the angle between the hull and the ground becomes smaller, and the safety of passing vehicles is improved. The barge unloading approach bridge provided by the utility model can realize full electric operation, with a high degree of automation, reduce the labor intensity of workers, and improve work efficiency.

[0047] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] Unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A barge unloading approach bridge, characterized in that: It includes multiple hull limiting pipe piles, a base structure layer, a bridge body, a gantry support group, and a limiting device group. The multiple hull limiting pipe piles are arranged on the seabed on both sides of the barge and are used to limit the hull. A limiting device slide rail group and a bridge tail slide rail are arranged on the base structure layer. The bridge body is arranged on the base structure layer. The bridge body includes a front section bridge body, a middle section bridge body, and a rear section bridge body. One end of the front section bridge body extends out of the front end of the base structure layer, and the other end is rotatably connected to one end of the middle section bridge body. Two groups of first rolling devices are arranged on both side surfaces of the middle section bridge body. One end of the rear section bridge body is rotatably connected to the other end of the middle section bridge body, and the other end is slidably connected to the base structure layer through the bridge tail slide rail. The gantry support group is arranged on the base structure layer. The gantry support group includes two gantry supports respectively arranged on both sides of the middle section bridge body. The gantry support is of a "冂"-shaped structure. The gantry support includes a top horizontal support and two vertical supports respectively connected to both ends of the top horizontal support. A first lifting device and a second lifting device are arranged on the top horizontal support. The first lifting device is connected to the front section bridge body and is used to drive the front section bridge body to rise and fall. The second lifting device is connected to the middle section bridge body and is used to drive the middle section bridge body to rise and fall. Vertical guide plates are arranged on the vertical supports, and the vertical guide plates are in contact with the first rolling devices on both side surfaces of the middle section bridge body. The limiting device group is arranged on the base structure layer and is slidably connected to the base structure layer through the limiting device slide rail group. The middle part of the limiting device slide rail group is horizontally arranged between the two gantry supports, and both ends respectively extend to the outside of the two gantry supports.

2. The barge unloading approach bridge according to claim 1, characterized in that: The number of the hull limiting pipe piles is four; and / or, the inner layer of the hull limiting pipe pile is a reinforced concrete structure, the middle layer is a thick-walled spiral steel pipe, and the outer layer is coated with an anti-corrosion coating; and / or, the bottom end of the hull limiting pipe pile is deeply buried in the seabed by a pile driver.

3. The barge unloading approach bridge according to claim 1, characterized in that: The base structure layer is a concrete structure; and / or, the bridge body is welded by H-shaped steel.

4. The barge unloading approach bridge according to claim 1, characterized in that: The first rolling device includes two relatively arranged rib plates, two bearings, and a cylindrical roller with a hollow interior. The two bearings are respectively arranged on the inner sides of the two rib plates, and the inner rings of the bearings are fixedly connected to the corresponding rib plates. Both ends of the cylindrical roller are respectively sleeved on the outer rings of the two bearings.

5. The barge unloading approach bridge according to claim 4, characterized in that: At least one group of second rolling devices is further arranged at both ends of the middle section bridge body, and the structure of the second rolling device is the same as that of the first rolling device.

6. The barge unloading approach bridge according to claim 1, characterized in that: The front section bridge body includes a first section bridge body and a second section bridge body. The middle section bridge body includes a third section bridge body. The rear section bridge body includes a fourth section bridge body and a fifth section bridge body. The first to fifth section bridge bodies are sequentially rotatably connected through hinge ears. The end of the fifth section bridge body is slidably connected to the base structure layer through the bridge tail slide rail.

7. The barge unloading approach bridge according to claim 6, characterized in that: The first lifting device and the second lifting device are both electric hoists. Hoisting rings are arranged on the second section bridge body and the third section bridge body respectively. The second section bridge body and the third section bridge body are respectively connected to the electric hoists through the hoisting rings.

8. The barge unloading approach bridge according to claim 7, characterized in that: The gantry support further comprises a plurality of gantry support embedded parts, the gantry support embedded parts are embedded in the base structure layer, and the vertical support is connected to the gantry support embedded parts.

9. The barge unloading approach bridge according to any one of claims 1 to 8, characterized in that: The limiting device group includes two limiting devices respectively arranged under the two gantry supports, and the limiting device includes a stepped support frame, a transmission device and a power device. The stepped support frame is stepped toward the side between the two gantry supports, and the bottom end of the stepped support frame is slidably connected to the base structure layer through the limiting device slide rail group; the stepped support frame is connected to the power device through the transmission device.

10. The barge unloading approach bridge according to claim 9, characterized in that: The limiting device also includes a control device, the transmission device includes a screw reducer and a screw, and the power device is a motor; the input end of the screw reducer is connected to the motor, and the output end is connected to the screw; the control device is connected to the motor signal for remotely controlling the motor.

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