Rail clamping device of port gantry crane

Abstract

The utility model relates to a rail clamping device, in particular to a rail clamping device of a port gantry crane, which comprises a support frame. Two groups of mounting plates are symmetrically arranged on the supporting frame; a brake block is fixed on the mounting plate; a brake mechanism is arranged on the supporting frame and can drive the mounting plates to be close to or far away from each other so as to drive the brake blocks to be close to or far away from the track; when the locomotive drives the rail clamping device to walk together, the brake block and the rail are in a separated state, so that the rail clamping device does not hinder normal walking of the locomotive in the walking process, loss of the brake block can be reduced, and the service life of the rail clamping device is prolonged; when the locomotive stops walking, the brake blocks on the two sides of the rail can abut against the rail at the same time, so that the braking capacity is improved, abrasion of the two brake blocks can be synchronized to the maximum extent, the situation that due to different abrasion of the brake blocks, the force for extruding the rail has too large deviation is avoided, and the safety and reliability of the rail clamping device are improved.

Description

Technical Field

[0001] This utility model relates to a rail clamp, specifically a rail clamp for a port gantry crane. Background Technology

[0002] A rail clamp is a safety device used to prevent rail-mounted machinery from moving freely along the track. It is commonly used in large freight yards and coal yards for bucket wheel excavators, stacker-reclaimers, and various bridge and gantry container cranes. When the machinery stops operating, the rail clamp automatically clamps the rails to prevent slippage caused by wind or other external forces.

[0003] Common rail clamps include small rail clamps and hydraulic rail clamps. Small rail clamps are often used on small locomotives and are usually single-sided, meaning they can only clamp one side of the rail, with relatively small clamping force (and thus less braking capacity). Hydraulic rail clamps are often used on large locomotives and are usually double-sided, meaning they can clamp both sides of the rail; they have a larger clamping force and are controlled by a hydraulic system, providing greater clamping force; for locomotives with heavy loads, hydraulic rail clamps can provide excellent braking capacity.

[0004] Due to the humid and windy conditions at ports, while hydraulic rail clamps provide good braking capability, the sealing performance of the hydraulic system cannot be effectively guaranteed after long-term use. Routine inspections often fail to detect its sealing performance. When the sealing performance of the hydraulic system weakens, the braking capacity of the rail clamps decreases significantly, which is detrimental to safe production. Furthermore, port locomotives bear heavy loads, making small rail clamps unsuitable for braking port locomotives. Utility Model Content

[0005] The purpose of this utility model is to provide a rail clamp for a port gantry crane to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A rail clamp for a port gantry crane, comprising a support frame;

[0008] Two sets of mounting plates are symmetrically arranged on the support frame; brake blocks are fixed on the mounting plates.

[0009] The support frame has a braking mechanism that can move the mounting plates closer to or further apart, thereby moving the brake block closer to or further away from the track.

[0010] The rail clamp of the port gantry crane described above includes: a braking mechanism comprising a connecting plate mounted on the support frame; a lifting groove provided on the connecting plate; a connecting shaft slidably fitted within the lifting groove; a tray mounted on the connecting shaft; a spring provided on the support frame; the two ends of the spring respectively abutting against the tray and the support frame; multiple sets of connecting rods rotatably mounted on the connecting shaft; the multiple sets of connecting rods symmetrically arranged; a lever rotatably mounted on the connecting rod; a slider mounted on the lever; a pressing groove provided on the support frame for slidably fitting with the slider; and a lever fixedly connected to the mounting plate.

[0011] The rail clamp of the port gantry crane as described above: the extrusion chute is set with a vertical rail.

[0012] The rail clamp of the port gantry crane as described above: the braking mechanism further includes a telescopic column installed on the support frame; a telescopic sleeve is slidably fitted on the telescopic column, and a mounting base is installed on the telescopic sleeve; a motor is installed on the mounting base, and a first bevel gear is installed on the output end of the motor; a rotating shaft is rotatably installed on the mounting base, and a second bevel gear meshing with the first bevel gear is installed on the rotating shaft; external thread grooves are opened on both ends of the rotating shaft; an internal thread sleeve that is threadedly connected to the external thread groove is rotatably installed on the lever.

[0013] The rail clamp of the port gantry crane as described above: multiple sets of pads are installed between the mounting plate and the brake block.

[0014] The rail clamp of the port gantry crane described above: the brake block has multiple sets of slots on the side near the rail.

[0015] The rail clamp of the port gantry crane as described above: multiple sets of rollers are rotatably mounted on the support frame.

[0016] The rail clamp of the port gantry crane as described above: a limit rod is installed on one end of the support frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: When the locomotive drives the rail clamp together, the brake block is separated from the rail, thus ensuring that the rail clamp will not obstruct the normal movement of the locomotive during the movement, and also reducing the wear of the brake block, thereby improving the service life of the rail clamp; when the locomotive stops moving, the threaded engagement of the external thread groove and the internal thread sleeve enables the two levers to move synchronously, so that the two brake blocks can simultaneously abut against the guide rail, thereby improving the braking capacity and maximizing the synchronization of the wear of the two brake blocks, avoiding excessive deviation in the force of squeezing the rail due to different wear of the brake blocks, thereby improving the safety and reliability of the rail clamp; and since the external thread groove is directly exposed, the inspection personnel can easily detect the overall performance of the rail clamp, which is conducive to safe production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the rail clamp of a port gantry crane.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure at point A in the middle.

[0020] Figure 3 for Figure 1 A structural diagram from another perspective.

[0021] Figure 4 for Figure 3 A schematic diagram of the structure from the perspective of an explosion.

[0022] Figure 5 This is a schematic diagram of the connecting rod and brake block in the rail clamp of a port gantry crane.

[0023] In the diagram: 1. Support frame; 101. Extrusion groove; 102. Telescopic column;

[0024] 2. Connecting plate; 201. Lifting slide rail;

[0025] 3. Coupling;

[0026] 4. Pallet;

[0027] 5. Spring;

[0028] 6. Connecting rod;

[0029] 7. Lever; 701. Sliding block;

[0030] 8. Mounting plate;

[0031] 9. Brake block; 901. Groove;

[0032] 10. Mounting base; 1001. Telescopic sleeve;

[0033] 11. Electric motor; 1101. First bevel gear;

[0034] 12. Shaft; 1201. Second bevel gear; 1202. External thread groove;

[0035] 13. Internal threaded sleeve;

[0036] 14. Limiting rod;

[0037] 15. Rollers;

[0038] 16. Spacer blocks. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0040] See also Figures 1-5 As an embodiment of the present utility model, the rail clamp of the port gantry crane includes a support frame 1;

[0041] Two sets of mounting plates 8 are symmetrically arranged on the support frame 1; brake blocks 9 are fixed on the mounting plates 8;

[0042] The support frame 1 has a braking mechanism that can move the mounting plates 8 closer to or further away from each other, thereby moving the brake block 9 closer to or further away from the track.

[0043] In this embodiment, the rail clamp is a safety device used to prevent track-mounted machinery from moving freely along the track direction. It is commonly used in large freight yards and coal yards for bucket wheel excavators, stacker-reclaimers, and various bridge and gantry container cranes. The rail clamp is usually connected to the locomotive. When the locomotive moves, the rail clamp moves synchronously. Automatic control is achieved through a PLC system, further enhancing safety and reliability.

[0044] When the locomotive moves with the rail clamp, the spacing between the mounting plates 8 remains unchanged, thus ensuring that the brake block 9 is separated from the rail. This ensures that the rail clamp will not obstruct the normal movement of the locomotive during travel, and also reduces the wear of the brake block 9, thereby increasing the service life of the rail clamp.

[0045] When the locomotive stops moving, the PIC system controls the designated mechanism on the rail clamp to move, causing the two mounting plates 8 to move closer together, thereby causing the brake block 9 to come into contact with the rail and thus brake, preventing the locomotive from moving autonomously under the influence of external interference factors and causing dangerous accidents.

[0046] The two mounting plates 8 move synchronously, causing the brake blocks 9 on both sides of the rail to contact the rail simultaneously, thereby improving the braking ability and maximizing the synchronization of the wear of the two brake blocks 9. This avoids excessive deviation in the force of squeezing the rail due to different wear of the brake blocks 9, thus improving the safety and reliability of the rail clamp.

[0047] As a further embodiment of this utility model, the braking mechanism includes a connecting plate 2 mounted on the support frame 1; a lifting groove 201 is provided on the connecting plate 2; a connecting shaft 3 is slidably fitted in the lifting groove 201; a tray 4 is mounted on the connecting shaft 3; a spring 5 is provided on the support frame 1; the two ends of the spring 5 respectively abut against the tray 4 and the support frame 1; multiple sets of connecting rods 6 are rotatably mounted on the connecting shaft 3; the multiple sets of connecting rods 6 are symmetrically arranged; a lever 7 is rotatably mounted on the connecting rod 6; a slider 701 is mounted on the lever 7; a compression groove 101 is provided on the support frame 1 that slidably fits into the slider 701; the lever 7 is fixedly connected to the mounting plate 8.

[0048] In this embodiment, when the locomotive stops moving, the system controls the ends of the two levers 7 away from the slider 701 to move away from each other. At this time, the levers 7 will rotate in conjunction with the connecting rod 6, thereby driving the slider 701 to slide in the extrusion groove 101 to move closer to each other, thereby driving the mounting plates 8 to move closer to each other, thereby driving the brake block 9 to synchronously abut against the track.

[0049] When brake block 9 contacts the track, the tops of lever 7 will still move away from each other. At this time, lever 7 will move further towards support frame 1, thereby driving tray 4 towards support frame 1 through connecting rod 6, thus compressing spring 5. At this time, the various structures are relatively close together, which can avoid excessive pressure causing damage to the device structure, thereby improving the safety and stability of the device.

[0050] As a further embodiment of this utility model, the extrusion chute 101 is provided with a vertical track.

[0051] In this embodiment, the vertical track setting of the extrusion groove 101 maximizes the contact area between the brake block 9 and the track, effectively improving the braking effect. It can maintain the relative flatness of the contact surface between the brake block 9 and the track over a long period of time, avoiding irregular wear such as bevels that could reduce the safety of the device.

[0052] As a further embodiment of this utility model, the braking mechanism further includes a telescopic column 102 mounted on the support frame 1; a telescopic sleeve 1001 is slidably fitted on the telescopic column 102, and a mounting base 10 is mounted on the telescopic sleeve 1001; a motor 11 is mounted on the mounting base 10, and a first bevel gear 1101 is mounted on the output end of the motor 11; a rotating shaft 12 is rotatably mounted on the mounting base 10, and a second bevel gear 1201 that meshes with the first bevel gear 1101 is mounted on the rotating shaft 12; external threaded grooves 1202 are provided on both ends of the rotating shaft 12; and an internal threaded sleeve 13 that is threadedly connected to the external threaded groove 1202 is rotatably mounted on the lever 7.

[0053] In this embodiment, when the locomotive stops, the system controls the motor 11 to rotate, thereby driving the first bevel gear 1101 to rotate. Through meshing, the second bevel gear 1201 rotates, thus causing the shaft 12 to rotate.

[0054] The rotating shaft 12 will drive the external threaded grooves 1202 at both ends to rotate synchronously; and through the threaded engagement, it will drive the internal threaded sleeve 13 to move along the length direction of the shaft 12; since the thread directions of the external threaded grooves 1202 at both ends of the shaft 12 are opposite, the two internal threaded sleeves 13 will move synchronously in opposite directions, thereby driving the top of the lever 7 to move away from each other; and the internal threaded sleeve 13 will rotate and engage with the lever 7.

[0055] As the distance between the top of lever 7 and support frame 1 gradually decreases, the internal threaded sleeve 13 will drive the mounting base 10 to move closer to support frame 1 via the rotating shaft 12. At this time, the telescopic column 102 will slide inward within the telescopic sleeve 1001.

[0056] The threaded engagement between the external threaded groove 1202 and the internal threaded sleeve 13 enables the two levers 7 to move synchronously, allowing the two brake blocks 9 to contact the guide rail simultaneously. This improves braking capability and maximizes the synchronization of wear between the two brake blocks 9, preventing excessive deviation in the force applied to the rail due to uneven wear of the brake blocks 9. This enhances the safety and reliability of the rail clamp. Furthermore, since the external threaded groove 1202 is directly exposed, inspectors can easily assess the overall performance of the rail clamp, which is beneficial for safe production.

[0057] As a further embodiment of this utility model, multiple sets of pads 16 are installed between the mounting plate 8 and the brake block 9.

[0058] In this embodiment, by increasing or decreasing the number of pads 16, the force of the brake block 9 pressing against the rail can be increased or decreased. By adjusting the number of pads 16, the distance between the two brake blocks 9 and the rail can be maximized to be the same, thereby improving the braking ability and maximizing the synchronization of the wear of the two brake blocks 9, avoiding excessive deviation in the force of pressing against the rail due to different wear of the brake blocks 9, thereby improving the safety and reliability of the rail clamp.

[0059] As a further improvement of this utility model, the brake block 9 has multiple sets of slots 901 on the side near the track.

[0060] In this embodiment, the groove 901 can increase the friction coefficient of the brake block 9, thereby increasing the braking ability of the rail clamp; it can also determine the condition of the brake block 9 by detecting the depth of the groove 901 during maintenance.

[0061] As a further embodiment of this utility model, multiple sets of rollers 15 are rotatably mounted on the support frame 1.

[0062] In this embodiment, when the locomotive drives the rail clamp to move, it will cause the roller 15 to roll and cooperate with the rail, thereby reducing the difficulty of the rail clamp to move and reducing the resistance of the locomotive to move; and by supporting the rail clamp with the roller 15, the rail clamp can avoid direct contact between the rail clamp and the rail, thereby reducing the frictional wear of the rail clamp and thus improving the service life of the device.

[0063] As a further embodiment of this utility model, a limiting rod 14 is installed on one end of the support frame 1.

[0064] In this embodiment, the limiting rod 14 can abut against the limiting block fixed on the track when the locomotive drives the rail clamp to the end of its travel, so as to prevent the locomotive from crashing, derailing or other accidents.

[0065] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A rail clamp for a port gantry crane, comprising a support frame (1). Its features are, Two sets of mounting plates (8) are symmetrically arranged on the support frame (1); brake blocks (9) are fixed on the mounting plates (8); The support frame (1) has a braking mechanism that can drive the mounting plates (8) to move closer or further apart, thereby driving the brake block (9) closer or further away from the track.

2. The rail clamp for a port gantry crane according to claim 1, characterized in that, The braking mechanism includes a connecting plate (2) mounted on the support frame (1); a lifting groove (201) is provided on the connecting plate (2); a connecting shaft (3) is slidably fitted in the lifting groove (201); a tray (4) is mounted on the connecting shaft (3); a spring (5) is provided on the support frame (1); the two ends of the spring (5) respectively abut against the tray (4) and the support frame (1); multiple sets of connecting rods (6) are rotatably mounted on the connecting shaft (3); the multiple sets of connecting rods (6) are symmetrically arranged; a lever (7) is rotatably mounted on the connecting rod (6); a slider (701) is mounted on the lever (7); a compression groove (101) is provided on the support frame (1) that slidably fits into the slider (701); the lever (7) is fixedly connected to the mounting plate (8).

3. The rail clamp for a port gantry crane according to claim 2, characterized in that, The extrusion chute (101) is set with a vertical track.

4. The rail clamp for a port gantry crane according to claim 3, characterized in that, The braking mechanism further includes a telescopic column (102) mounted on the support frame (1); a telescopic sleeve (1001) is slidably fitted on the telescopic column (102), and a mounting base (10) is mounted on the telescopic sleeve (1001); a motor (11) is mounted on the mounting base (10), and a first bevel gear (1101) is mounted on the output end of the motor (11); a rotating shaft (12) is rotatably mounted on the mounting base (10), and a second bevel gear (1201) meshing with the first bevel gear (1101) is mounted on the rotating shaft (12); external thread grooves (1202) are provided on both ends of the rotating shaft (12); and an internal thread sleeve (13) that is threadedly connected to the external thread groove (1202) is rotatably mounted on the lever (7).

5. The rail clamp for a port gantry crane according to claim 1, characterized in that, Multiple sets of pads (16) are installed between the mounting plate (8) and the brake block (9).

6. The rail clamp for a port gantry crane according to claim 1, characterized in that, The brake block (9) has multiple slots (901) on the side near the track.

7. The rail clamp for a port gantry crane according to claim 1, characterized in that, Multiple sets of rollers (15) are rotatably mounted on the support frame (1).

8. The rail clamp for a port gantry crane according to claim 1, characterized in that, A limit rod (14) is installed on one end of the support frame (1).

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