Combined high-strength slewing platform of portal crane

Abstract

The utility model relates to the technical field of locking support, concretely to a combined high-strength portal crane slewing platform. The utility model discloses a support seat, bearing, gear ring, gear, motor and fixed platform, the outside of support seat is equipped with locking device, the locking device includes fixed seat, one end of fixed seat is fixedly connected with support seat, one side fixedly connected with hydraulic cylinder of fixed seat, the output of hydraulic cylinder is fixedly connected with assembly block, one end fixedly connected with the block of assembly block, the outside fixedly connected with antiskid pad of block, one side fixedly connected with two limit cylinders of fixed seat. The locking scheme of traditional combined high-strength portal crane slewing platform is solved, and the bolt locking structure is generally adopted, but the bolt and the pin hole are easy to cause the "virtual insertion" phenomenon during locking due to the cooperation gap and the long-term plugging and unplugging abrasion, and the problem of increasing the risk of accidental rotation of the slewing platform.

Description

Technical Field

[0001] This utility model relates to the field of locking bracket technology, and in particular to a combined high-strength gantry crane slewing platform. Background Technology

[0002] Gantry cranes are a common type of large lifting equipment, widely used in ports, docks, shipyards, and other places. They are mainly used for loading, unloading, and handling of goods, and can adapt to different operational needs. They can lift goods of various weights and sizes. The slewing platform is a key component of the gantry crane. It connects the upper rotating part and the lower fixed part of the crane. Its main function is to provide support for the upper rotating part and realize the rotation of the upper structure relative to the lower structure through the slewing mechanism, thereby enabling the crane to carry out cargo lifting operations within a large range.

[0003] In the existing technology, the locking scheme of the slewing platform of the combined high-strength gantry crane generally adopts a pin locking structure. However, due to the fit clearance between the pin and the pin hole and the wear from long-term insertion and removal, the "loose insertion" phenomenon is prone to occur when locking, which increases the risk of accidental rotation of the slewing platform. Summary of the Invention

[0004] The purpose of this utility model is to solve the problem of the traditional locking scheme of the slewing platform of the combined high-strength gantry crane in the prior art, which generally adopts a pin locking structure. However, the pin and the pin hole have disadvantages due to the gap in fit and wear due to long-term insertion and removal. Therefore, a combined high-strength gantry crane slewing platform is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a combined high-strength gantry crane slewing platform, comprising a support base, bearings, a gear ring, gears, a motor, and a fixed platform. The support base is provided with a locking device on its exterior. The locking device includes a fixed base, one end of which is fixedly connected to the support base. A hydraulic cylinder is fixedly connected to one side of the fixed base. An assembly block is fixedly connected to the output end of the hydraulic cylinder. A stop block is fixedly connected to one end of the assembly block. An anti-slip pad is fixedly connected to the outer side of the stop block.

[0006] The effect achieved by the above components is as follows: the motor starts and drives the gear to rotate, causing the meshing gear ring to rotate synchronously and drive the outer ring of the bearing to rotate. The rotation of the gear ring causes the fixed platform to rotate synchronously. After the motor is turned off, the fixed platform stops rotating. The hydraulic cylinder starts and drives the assembly block to move, causing the abutment block to move against the anti-slip pad and abut against the fixed platform, thereby creating a restriction effect on the fixed platform.

[0007] Preferably, two limiting cylinders are fixedly connected to one side of the fixed base, and limiting rods are slidably connected inside the limiting cylinders. One end of each limiting rod is fixedly connected to the abutment block.

[0008] The effect achieved by the above components is that the movement of the abutment causes the limiting rod to slide on the limiting cylinder. Since the limiting cylinder is fixed on the fixed base, the position of the abutment is prevented from shifting during movement.

[0009] Preferably, a cylinder is fixedly connected to the arc surface of the limiting cylinder, and a support plate is fixedly connected to the arc surface of the cylinder, with one end of the two support plates fixedly connected to a fixed seat.

[0010] The effect achieved by the above components is that the cylinder is fixed on the limiting cylinder, the cylinder is fixed on the support plate, and since the support plate is fixed on the fixed seat, the position of the limiting cylinder is fixed.

[0011] Preferably, a stabilizing frame is fixedly connected to the inner side of the fixing base.

[0012] The effect achieved by the above components is to stabilize the frame and prevent the fixed base from deforming.

[0013] Preferably, a U-shaped plate is fixedly connected to one side of the fixed base, and one side of the U-shaped plate is fixedly connected to the hydraulic cylinder.

[0014] The effect achieved by the above-mentioned components is that the U-shaped plate, positioned between the hydraulic cylinder and the fixed seat, stabilizes the installation position of the hydraulic cylinder.

[0015] Preferably, the fixing base is provided with protective devices on both sides. The protective devices include two L-shaped plates. The side of the two L-shaped plates that are close to each other is fixedly connected to the fixing base, and a connecting plate is fixedly connected to one end of the two L-shaped plates.

[0016] The above components achieve the following effect: the connecting plate is fixed on the L-shaped plate, and the L-shaped plate is fixed on the fixing base.

[0017] Preferably, a protective plate is slidably connected to the inner side of the L-shaped plate.

[0018] The effect achieved by the above components is that the protective plate and the L-shaped plate are compatible.

[0019] Preferably, the inner side of the protective plate is slidably connected with threaded rods, and the ends of the two threaded rods that are close to each other are fixedly connected to the support base.

[0020] The effect achieved by the above components is that the protective plate and the threaded rod are compatible.

[0021] Preferably, a washer is slidably connected to the arc surface of the threaded rod, and a nut is threadedly connected to the arc surface of the threaded rod.

[0022] The effect achieved by the above components is that the nut and washer are compatible with the threaded rod.

[0023] In summary, the beneficial effects of this utility model are as follows: In this invention, a locking device is used to start the motor when the fixed platform needs to be rotated or locked. The motor drives the gear ring and bearing outer ring to rotate via gear transmission, causing the fixed platform to rotate synchronously. After reaching the target position, the motor is turned off, and the fixed platform stops. Then, the hydraulic cylinder is started to move the assembly block and drive the abutment block to move, so that the anti-slip pad fits against the fixed platform, forming a mechanical limit. The locking device solves the problem of the traditional locking scheme for the rotating platform of a combined high-strength gantry crane, which generally uses a pin locking structure. However, due to the clearance between the pin and the pin hole and the wear from long-term insertion and removal, the "loose insertion" phenomenon is prone to occur during locking, increasing the risk of accidental rotation of the rotating platform.

[0024] In this utility model, when the gear ring needs protection, the pre-set positioning hole of the protective plate is aligned with the threaded rod for assembly, the washer is fitted onto the threaded rod, and the nut is screwed in to fix it. Then, the L-shaped plate is placed on the surface of the protective plate and abuts against the connecting plate, so that the L-shaped plate is installed on the fixed seat, and the protective plate forms a protective barrier around the gear ring. Through the protective device, when the gear ring needs protection, the problem of traditional combined high-strength gantry crane slewing platforms being inconvenient to protect the gear ring, and the irreversible damage such as tooth tip cracking and tooth surface deformation caused by heavy tools accidentally falling and impacting the gear ring is easily solved. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the locking structure of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the three-dimensional structure of this utility model; Figure 4 This is a schematic diagram of the protective structure of this utility model.

[0026] Legend: 1. Support base; 2. Locking device; 201. Fixed base; 202. Hydraulic cylinder; 203. Abutment block; 204. Anti-slip pad; 205. Limiting cylinder; 206. Limiting rod; 207. Cylinder; 208. Support plate; 209. Stabilizing frame; 210. U-shaped plate; 211. Assembly block; 3. Protective device; 31. L-shaped plate; 32. Connecting plate; 33. Protective plate; 34. Threaded rod; 35. Washer ring; 36. Nut; 4. Bearing; 5. Gear ring; 6. Gear; 7. Motor; 8. Fixed platform. Detailed Implementation

[0027] Reference Figure 1 and Figure 3As shown, this utility model provides a technical solution: a combined high-strength gantry crane slewing platform, including a support base 1, a bearing 4, a gear ring 5, a gear 6, a motor 7 and a fixed platform 8. The support base 1 is provided with a locking device 2 on its outside, and the fixed base 201 is provided with protective devices 3 on both sides.

[0028] The specific design and function of the locking device 2 and the protective device 3 will be explained in detail below.

[0029] Reference Figure 2 As shown, in this embodiment: the locking device 2 includes a fixed base 201, one end of which is fixedly connected to the support base 1. A hydraulic cylinder 202 is fixedly connected to one side of the fixed base 201. An assembly block 211 is fixedly connected to the output end of the hydraulic cylinder 202. A stop block 203 is fixedly connected to one end of the assembly block 211. An anti-slip pad 204 is fixedly connected to the outer side of the stop block 203. When the motor 7 starts, the output end drives the gear 6 to rotate, causing the meshing gear ring 5 to rotate synchronously, which in turn drives the outer ring of the bearing 4 to rotate. The rotation of the gear ring 5 simultaneously causes the fixed platform 8 to rotate synchronously. When the motor 7 is turned off, the fixed platform 8 stops rotating. The output end of the hydraulic cylinder 202 drives the assembly block 211 to move, causing the stop block 203 to drive the anti-slip pad 204 to abut against the fixed platform 8, thereby creating a restraining effect on the fixed platform 8. Two limiting cylinders 205 are fixedly connected to one side of the fixed base 201. Limiting rods 206 are slidably connected inside the limiting cylinders 205. One end of the two limiting rods 206 is fixedly connected to the stop block 203. The movement of the abutment 203 causes the limiting rod 206 to slide on the limiting cylinder 205. Since the limiting cylinder 205 is fixed to the fixed base 201, the position of the abutment 203 is prevented from shifting during movement. A cylinder 207 is fixedly connected to the arc surface of the limiting cylinder 205, and a support plate 208 is fixedly connected to the arc surface of the cylinder 207. One end of the two support plates 208 is fixedly connected to the fixed base 201. This achieves the effect of fixing the cylinder 207 to the limiting cylinder 205 and the support plate 208. Since the support plate 208 is fixed to the fixed base 201, the position of the limiting cylinder 205 is fixed. A stabilizing frame 209 is fixedly connected to the inner side of the fixed base 201. This achieves the effect of stabilizing the frame 209 to prevent the fixed base 201 from deforming. A U-shaped plate 210 is fixedly connected to one side of the fixed base 201, and one side of the U-shaped plate 210 is fixedly connected to the hydraulic cylinder 202. The U-shaped plate 210 is positioned between the hydraulic cylinder 202 and the fixed seat 201, which stabilizes the installation position of the hydraulic cylinder 202.

[0030] Reference Figure 4As shown in this embodiment: the protective device 3 includes two L-shaped plates 31. The sides of the two L-shaped plates 31 that are close to each other are fixedly connected to the fixing base 201. A connecting plate 32 is fixedly connected to one end of each L-shaped plate 31. This achieves the effect of the connecting plate 32 being fixed to the L-shaped plate 31, and the L-shaped plate 31 being fixed to the fixing base 201. A protective plate 33 is slidably connected to the inner side of the L-shaped plate 31. This achieves the effect of the protective plate 33 and the L-shaped plate 31 being compatible. A threaded rod 34 is slidably connected to the inner side of the protective plate 33. The ends of the two threaded rods 34 that are close to each other are fixedly connected to the support base 1. This achieves the effect of the protective plate 33 and the threaded rod 34 being compatible. A washer 35 is slidably connected to the arc surface of the threaded rod 34, and a nut 36 is threadedly connected to the arc surface of the threaded rod 34. This achieves the effect of the nut 36 and washer 35 being compatible with the threaded rod 34.

[0031] Working principle: When the fixed platform 8 needs to be rotated or locked via the locking device 2, the operator first starts the motor 7. The output end of the motor 7 drives the gear 6 to rotate, which in turn drives the meshing gear ring 5 to rotate synchronously, thereby driving the outer ring of the bearing 4 to rotate, so that it rotates together with the fixed platform 8 set on the gear ring 5. After the fixed platform 8 is adjusted to the target position, the motor 7 is turned off, and the fixed platform 8 stops and remains in position. Then, the hydraulic cylinder 202 is started, and its output end pushes the assembly block 211 to move, which in turn drives the stop block 203 and the anti-slip pad 20 4. Apply pressure to the fixed platform 8 to form a mechanical limit on the fixed platform 8. During the movement of the abutment block 203, the limit rod 206 slides along the inner wall of the limit cylinder 205 to ensure the stability of the movement trajectory of the abutment block 203 and avoid deviation. Through the locking device 2, the traditional locking scheme of the slewing platform of the combined high-strength gantry crane is solved. The traditional lock structure is generally a pin locking structure. However, due to the fit gap between the pin and the pin hole and the long-term wear of insertion and removal, the "false insertion" phenomenon is easy to occur when locking, which increases the risk of accidental rotation of the slewing platform.

[0032] When the gear ring 5 needs protection using the protective device 3, the operator first aligns the positioning hole on the protective plate 33 with the threaded rod 34 fixed on the support seat 1. Then, the protective plate 33 is moved axially along the threaded rod 34 until the threaded rod 34 passes through the positioning hole to complete the initial positioning. Next, the washer 35 is put into the threaded rod 34 and the nut 36 is tightened to fix the protective plate 33. Finally, the L-shaped plate 31 is placed on the surface of the protective plate 33 so that the protective plate 33 and the connecting plate 32 abut against each other, and the L-shaped plate 31 is installed on the fixed seat 201 to stabilize the position of the protective plate 33 and make the protective plate 33 form protection around the gear ring 5. By using the protective device 3, when the gear ring 5 needs protection, the problem of the traditional combined high-strength gantry crane slewing platform being inconvenient to protect the gear ring 5 is solved. If heavy tools accidentally fall and impact the gear ring 5, irreversible damage such as tooth tip cracking and tooth surface deformation can easily occur.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A combined high-strength gantry crane slewing platform, comprising a support base (1), a bearing (4), a gear ring (5), a gear (6), a motor (7), and a fixed platform (8), characterized in that: The support base (1) is provided with a locking device (2) on its outside. The locking device (2) includes a fixed base (201). One end of the fixed base (201) is fixedly connected to the support base (1). A hydraulic cylinder (202) is fixedly connected to one side of the fixed base (201). An assembly block (211) is fixedly connected to the output end of the hydraulic cylinder (202). A stop block (203) is fixedly connected to one end of the assembly block (211). An anti-slip pad (204) is fixedly connected to the outside of the stop block (203).

2. The combined high-strength gantry crane slewing platform according to claim 1, characterized in that: Two limiting cylinders (205) are fixedly connected to one side of the fixed base (201). Limiting rods (206) are slidably connected inside the limiting cylinders (205). One end of the two limiting rods (206) is fixedly connected to the abutment block (203).

3. The combined high-strength gantry crane slewing platform according to claim 2, characterized in that: The arc surface of the limiting cylinder (205) is fixedly connected to a cylinder (207), and the arc surface of the cylinder (207) is fixedly connected to a support plate (208). One end of the two support plates (208) is fixedly connected to the fixing seat (201).

4. The combined high-strength gantry crane slewing platform according to claim 3, characterized in that: A stabilizing frame (209) is fixedly connected to the inner side of the fixing base (201).

5. The combined high-strength gantry crane slewing platform according to claim 4, characterized in that: A U-shaped plate (210) is fixedly connected to one side of the fixed base (201), and one side of the U-shaped plate (210) is fixedly connected to the hydraulic cylinder (202).

6. The combined high-strength gantry crane slewing platform according to claim 5, characterized in that: The fixed base (201) is provided with protective devices (3) on both sides. The protective devices (3) include two L-shaped plates (31). The side of the two L-shaped plates (31) that are close to each other is fixedly connected to the fixed base (201). A connecting plate (32) is fixedly connected to one end of the two L-shaped plates (31).

7. The combined high-strength gantry crane slewing platform according to claim 6, characterized in that: The inner side of the L-shaped plate (31) is slidably connected to a protective plate (33).

8. The combined high-strength gantry crane slewing platform according to claim 7, characterized in that: The inner side of the protective plate (33) is slidably connected with threaded rods (34), and the two threaded rods (34) are fixedly connected to the support base (1) at their close ends.

9. A combined high-strength gantry crane slewing platform according to claim 8, characterized in that: The arc surface of the threaded rod (34) is slidably connected to a washer (35), and the arc surface of the threaded rod (34) is threadedly connected to a nut (36).

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