Automatic double-drum rope rail type container crane

Abstract

The invention provides an automatic double-winding-drum rope rail type container crane which comprises a stand column, a cross beam installed on the stand column and a walking assembly arranged between the stand column and the cross beam, lifting assemblies are further arranged on the cross beam, a safety assembly is further arranged between the lifting assemblies, and the lifting assemblies are connected with a lifting tool; through a corrugated shaft, a gear and a ratchet wheel mechanism, it is ensured that when a lifting assembly breaks down, locking can be conducted immediately, a container is prevented from falling accidentally, the corrugated shaft moves under driving of a first gear, connection and separation of an output shaft and a driven shaft are achieved, and a pawl rotates under control of a push rod motor and locks a ratchet wheel in the clockwise direction; the combination of the driving motor and the rollers realizes the movement of the crane along the cross beam, so that the operation range and efficiency are improved; the first winch and the second winch which are symmetrically arranged guarantee load balance, and mechanical damage caused by unbalance loading is reduced.

Description

Technical Field

[0001] The invention relates to an automated double-drum rope rail container crane, in particular to the technical field of double drums. Background Art

[0002] Container cranes are important equipment for modern port logistics and cargo handling. They are used to lift containers from ships, trains or trucks and move them to designated locations. Traditional container cranes usually use a single drum system to lift and lower containers. However, with the growth of global trade and the increasing requirements for efficiency and safety, traditional crane designs can no longer meet the growing demand.

[0003] The double-drum rope rail-mounted container crane is an innovative design that uses two winches to lift and lower containers for smoother operation, higher load capacity and better control precision. This type of crane is also equipped with an automated travel component that allows the crane to move on its own on the dock rails, further improving operating efficiency.

[0004] In the prior art, when encountering an emergency (such as a power failure or a mechanical failure), the traditional crane may not be able to stop the descent and ascent of the container in time, which poses a safety hazard. Therefore, a safety device is needed to ensure that the container can be stably supported under any circumstances. The traditional double drum cannot switch between single and double drums as needed to meet different working conditions.

[0005] The two drums need to maintain highly consistent movements to ensure a stable load; any asynchrony will result in the risk of the cargo tilting or even falling; although traditional safety mechanisms such as mechanical brakes can play a certain role, they have a slow response speed when dealing with emergencies and are difficult to adapt to complex changes in working conditions. Summary of the invention

[0006] Purpose of the invention: To propose an automated double-drum rope rail container crane to solve the above problems existing in the prior art;

[0007] Technical solution: An automated double-drum rope rail container crane, comprising:

[0008] A column, a crossbeam mounted on the column, a walking assembly arranged between the column and the crossbeam, a lifting assembly is also arranged on the crossbeam, a safety assembly is also arranged between the lifting assemblies, and the lifting assembly is connected to the sling;

[0009] The safety component includes a shell arranged between the lifting components, a corrugated shaft connected to the lifting component and a first gear meshing with the corrugated shaft are provided in the shell, a transmission shaft supporting the first gear and movably connected to the shell, two ends of the corrugated shaft are symmetrically arranged and sequentially provided with a ratchet and a second gear sleeved on the lifting component, the second gear meshes with a third gear installed in the shell, the third gear meshes with a fourth gear installed in the shell, a pawl cooperating with the ratchet is also provided in the shell, and a push rod motor installed in the shell is provided at a position of the pawl close to the fourth gear.

[0010] In a further embodiment, the walking assembly includes a drive motor installed on the crossbeam and a roller installed on an output shaft of the drive motor.

[0011] In a further embodiment, the lifting assembly includes a first capstan and a second capstan movably mounted on the crossbeam, the first capstan and the second capstan are symmetrically arranged on both sides of the shell, the first capstan is sleeved on the output shaft of the first motor, the second capstan is sleeved on the driven shaft, the output shaft and the driven shaft are on the same axis and a gap is left between the two, the corrugated shaft is sleeved in the gap between the output shaft and the driven shaft and the corrugated shaft is slidably matched with the driven shaft and the output shaft, the first capstan is fixedly connected to the output shaft, and the second capstan is fixedly connected to the driven shaft.

[0012] In a further embodiment, the first capstan has the same structure as the second capstan, wherein the first capstan is further provided with a reciprocating screw and a guide rod movably mounted on the cross beam, a guide block sleeved on the guide rod and the rope, and a roller frame movably mounted on the guide block, the roller frame rollingly engages with a groove on the reciprocating screw; a gap is left between the rope and the guide block, and the guide block is a split structure; the reciprocating screw and the guide rod are both parallel to the axis of the first capstan, one end of the reciprocating screw is interference fit with the fourth gear and movably connected to the shell, the other end of the reciprocating screw is movably connected to the cross beam, the guide block slidingly engages with the guide rod, and the reciprocating screw and the first capstan are parallel to each other.

[0013] In a further embodiment, the output shaft and the driven shaft are both movably connected to the housing, and the first capstan and the second capstan are both provided with ropes connected to the sling, and the ropes pass through the pulley blocks arranged on the beam and the sling in sequence.

[0014] In a further embodiment, a limit frame and a twist lock are provided at the diagonal parts of the sling, the limit frame is arc-shaped with the arc opening facing the outside of the sling, the twist lock includes a support rod installed in the sling, a locking pin sleeved in the support rod, a pull rod installed on the locking pin, and one end of the pull rod is provided with a pull rod motor installed in the sling; an indicator plate is provided on the locking pin, the indicator plate extends out of the sling for a certain distance, and the indicator plate is threadedly connected to the locking pin and is movably connected to the sling.

[0015] In a further embodiment, the transmission shaft is interference fit with the first gear, one end of the transmission shaft is provided with a second motor mounted on the housing, the ratchet and the second gear are both interference fit with the output shaft, and the middle section of the ratchet is movably connected to the housing.

[0016] Beneficial effects: The present invention proposes an automated double-drum rope rail container crane, which ensures that when a lifting component fails, it can be locked immediately to prevent the container from accidentally falling through a corrugated shaft, gear and ratchet mechanism. The corrugated shaft moves under the drive of the first gear to achieve the connection and separation of the output shaft and the driven shaft. The ratchet rotates under the control of the push rod motor to lock the ratchet in the clockwise direction. The combination of the drive motor and the roller realizes the movement of the crane along the crossbeam, improving the operating range and efficiency. The symmetrically arranged first capstan and second capstan ensure load balance and reduce mechanical damage caused by eccentric loading. The guide rod is parallel to the axes of the two capstans, and the ropes are kept in the correct arrangement under the action of the reciprocating screw to prevent entanglement.

[0017] The arc-shaped limit frame can better fit the corner fittings of the container and provide more reliable fixation; the pull rod motor controls the rotation angle of the twist lock to automatically lock and unlock the container, and the indicator plate rotates with the twist lock to allow the operator to intuitively see the position status of the lock pin, increasing safety;

[0018] Two winches are used to achieve smoother operation and higher load capacity. To ensure the consistency of the two drum movements, a safety component is introduced. The safety component can monitor and adjust the speed difference between the two winches in real time to prevent the risk of cargo tilting or falling due to asynchrony. In addition, the safety component also provides a mechanical locking function. In the event of an emergency, the pawl can immediately lock the ratchet to prevent accidental movement of the sling and load.

[0019] The switchable single / double drum operation mode and the control of the transmission shaft on the rotation direction of the first gear allow the crane to automatically select single-drum or double-drum operation mode according to the actual working conditions. For example, using the single-drum mode under light loads or special working conditions can save energy; while the double-drum mode is enabled in heavy loads or situations requiring higher stability, which helps to optimize resource utilization while ensuring the best working performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the present invention.

[0021] Figure 2 It is a left view of the present invention.

[0022] Figure 3 It is a top view of the present invention.

[0023] Figure 4 It is a partial stereoscopic schematic diagram of the present invention.

[0024] Figure 5 It is a partial enlarged view of the safety component of the present invention.

[0025] Figure 6 It is a front view half-section schematic diagram of the present invention.

[0026] Figure 7 It is a partial enlarged front view of the lifting assembly of the present invention.

[0027] Figure 8 It is a front cross-sectional view of the lifting assembly of the present invention.

[0028] Fig. 9 It is the front view of the sling of the present invention.

[0029] Fig.10 It is a partially enlarged schematic diagram of the left view of the sling of the present invention.

[0030] The accompanying drawings are marked as follows: 1. beam; 2. walking assembly; 3. lifting assembly; 4. safety assembly; 5. sling; 21. driving motor; 22. roller; 31. first motor; 32. rope; 33. guide rod; 34. pulley block; 35. guide block; 36. roller; 37. reciprocating screw; 41 ratchet; 42. third gear; 43. fourth gear; 44. transmission shaft; 45. first gear; 46. corrugated shaft; 47. driven shaft; 48. push rod motor; 49. housing; 51. limit frame; 52. indicator plate; 53. pull rod; 54. support rod; 55. locking pin; 411. output shaft; 412. second gear; 413. pawl. DETAILED DESCRIPTION

[0031] In order to solve the problems existing in the prior art, the present invention adopts an automated double-drum rope rail container crane, which ensures that when the lifting component fails, it can be locked immediately through a corrugated shaft, gears and ratchet mechanism to prevent the container from accidentally falling. The corrugated shaft moves under the drive of the first gear to achieve the connection and separation of the output shaft and the driven shaft. The following is a further detailed description of this scheme through embodiments and in combination with the accompanying drawings.

[0032] In this application, we propose an automated double-drum rope rail-mounted container crane, comprising:

[0033] A column, a beam 1 installed on the column, and a walking assembly 2 arranged between the column and the beam 1, the walking assembly 2 includes a driving motor 21 installed on the beam 1, and a roller 22 installed on the output shaft 411 of the driving motor 21; the output shaft 411 and the driven shaft 47 are both movably connected to the housing 49, and the first winch and the second winch are both provided with a rope 32 connected to the sling 5, and the rope 32 passes through the pulley block 34 arranged on the beam 1 and the sling 5 in sequence.

[0034] The crossbeam 1 is also provided with a lifting assembly 3, and the lifting assembly 3 includes a first capstan and a second capstan movably mounted on the crossbeam 1, the first capstan and the second capstan are symmetrically arranged on both sides of the shell 49, the first capstan is sleeved on the output shaft 411 of the first motor 31, the second capstan is sleeved on the driven shaft 47, the output shaft 411 and the driven shaft 47 are on the same axis and a gap is left between the two, the corrugated shaft 46 is sleeved in the gap between the output shaft 411 and the driven shaft 47 and the corrugated shaft 46 is slidably matched with the driven shaft 47 and the output shaft 411, the first capstan is fixedly connected to the output shaft 411, and the second capstan is fixedly connected to the driven shaft 47.

[0035] The first capstan has the same structure as the second capstan, wherein the first capstan is further provided with a reciprocating screw rod 37 and a guide rod 33 movably mounted on the cross beam 1, a guide block 35 sleeved on the guide rod 33 and the rope 32, and a roller 36 movably mounted on the guide block 35, wherein the roller 36 rolls with the groove on the reciprocating screw rod 37; a gap is left between the rope 32 and the guide block 35, and the guide block 35 is a split structure; the reciprocating screw rod 37 and the guide rod 33 are both parallel to the axis of the first capstan, one end of the reciprocating screw rod 37 is interference fit with the fourth gear 43 and is movably connected to the housing 49, the other end of the reciprocating screw rod 37 is movably connected to the cross beam 1, the guide block 35 is slidably fitted with the guide rod 33, and the reciprocating screw rod 37 is parallel to the first capstan.

[0036] A safety component 4 is also provided between the lifting components 3, and the lifting components 3 are connected to the sling 5; a limit frame 51 and a twist lock are provided at the diagonal portion of the sling 5, the limit frame 51 is arc-shaped with the arc opening facing the outside of the sling 5, the twist lock comprises a support rod 54 installed in the sling 5, a locking pin 55 sleeved in the support rod 54, a pull rod 53 installed on the locking pin 55, and one end of the pull rod 53 is provided with a pull rod motor installed in the sling 5; an indicator plate 52 is provided on the locking pin 55, the indicator plate 52 extends out of the sling 5 for a distance, the indicator plate 52 is threadedly connected to the locking pin 55 and is movably connected to the sling 5.

[0037] The safety component 4 includes a shell 49 arranged between the lifting components 3, and a corrugated shaft 46 connected to the lifting component 3 and a first gear 45 meshing with the corrugated shaft 46 are provided in the shell 49, and a transmission shaft 44 supports the first gear 45 and is movably connected to the shell 49, and the two ends of the corrugated shaft 46 are symmetrically arranged and sequentially provided with a ratchet and a second gear 412 sleeved on the lifting component 3, the second gear 412 is meshed with a third gear 41 ratchet 42 installed in the shell 49, and the third gear 41 ratchet 42 is meshed with a fourth gear 43 installed in the shell 49, and a pawl 413 cooperating with the ratchet is also provided in the shell 49, and a push rod motor 48 installed in the shell 49 is provided at a position of the pawl 413 close to the fourth gear 43.

[0038] The transmission shaft 44 is interference fit with the first gear 45 , and one end of the transmission shaft 44 is provided with a second motor mounted on the housing 49 . The ratchet and the second gear 412 are both interference fit with the output shaft 411 , and the middle section of the ratchet 413 is movably connected to the housing 49 .

[0039] Working principle: First, according to the task requirements (such as load weight, working conditions), the single-roller or double-roller operation mode is selected through the control system; if the double-roller mode is selected, the push rod motor 48 is reset to drive the pawl 413 to lock the position of the ratchet wheel, and when the transmission shaft 44 drives the first gear 45 to rotate, the corrugated shaft 46 smoothly connects the output shaft 411 and the driven shaft 47, thereby realizing the alignment of the tooth grooves between the output shaft 411 and the driven shaft 47; if it is a single-roller mode, the corrugated shaft 46 is moved to separate from the driven shaft 47 and is located on the output shaft 411;

[0040] When moving to the target position, the drive motor 21 in the travel assembly 2 is activated, driving the roller 22 to move along the beam 1, positioning the crane to the position where the container needs to be lifted;

[0041] During the descent process, the push rod motor 48 pushes the pawl 413 to separate from the ratchet wheel, and then the spreader 5 aligns with and locks the container. After the spreader 5 approaches the container, the limit frame 51 helps to align the container corner fittings, and then the pull rod motor controls the twist lock action to automatically lock the container; at this time, the indicator plate 52 will rotate with the lock pin 55 to provide visual confirmation for the operator;

[0042] When lifting the container, the first capstan and the second capstan (depending on the selected working mode) rotate synchronously under the drive of the first motor 31, and the rope 32 is tightened through the pulley block 34, and the container begins to be lifted smoothly; under the rotation of the first capstan, the second gear 412 drives the third gear 42 and the fourth gear 43 to rotate, so that the reciprocating screw rod 37 rotates and drives the roller frame 36 to reciprocate. At this time, the guide block 35 guides the direction of the rope 32 so that the rope 32 is evenly wound on the first capstan;

[0043] During the lifting process, the push rod motor 48 is reset, so that the pawl 413 is engaged with the ratchet wheel, and the reverse rotation of the ratchet wheel is locked to prevent the risk of the cargo tilting or falling;

[0044] When transporting containers, the crane uses the traveling assembly 2 again to move to the unloading point, during which the corrugated shaft 46 and the gear system ensure the stable connection or separation between the output shaft 411 and the driven shaft 47, which is adjusted according to the working mode; the pawl 413 quickly locks the ratchet wheel according to the abnormal response situation to prevent accidental descent;

[0045] When the container is firmly placed, the pull rod motor reverses to unlock the twist lock, and the indicator plate 52 returns to the initial position, indicating that the unlocking is completed;

[0046] Finally, the crane returns to the starting position or moves to the next task location, ready to perform a new lifting operation;

[0047] If a power failure or other emergency occurs during operation, the push rod motor 48 is reset, so that the pawl 413 engages with the ratchet wheel, instantly locking the output shaft 411 and the driven shaft 47 to prevent the container from continuing to move and ensure safe operation.

[0048] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. An automated double-drum rope rail container crane, comprising: A column, a crossbeam mounted on the column, a walking assembly arranged between the column and the crossbeam, a lifting assembly is also arranged on the crossbeam, a safety assembly is also arranged between the lifting assemblies, and the lifting assembly is connected to the sling; It is characterized in that the safety component includes a shell arranged between the lifting components, a corrugated shaft connected to the lifting component and a first gear meshing with the corrugated shaft are provided in the shell, a transmission shaft supporting the first gear and movably connected to the shell, the two ends of the corrugated shaft are symmetrically arranged and sequentially provided with a ratchet and a second gear sleeved on the lifting component, the second gear meshes with a third gear installed in the shell, the third gear meshes with a fourth gear installed in the shell, a pawl cooperating with the ratchet is also provided in the shell, and a push rod motor installed in the shell is provided at a position of the pawl close to the fourth gear.

2. The automatic double-drum rope rail-mounted container crane according to claim 1, characterized in that: The walking assembly comprises a driving motor installed on the crossbeam and a roller installed on an output shaft of the driving motor.

3. The automatic double-drum rope rail-mounted container crane according to claim 1, characterized in that: The lifting assembly includes a first capstan and a second capstan movably mounted on the crossbeam, the first capstan and the second capstan are symmetrically arranged on both sides of the shell, the first capstan is sleeved on the output shaft of the first motor, the second capstan is sleeved on the driven shaft, the output shaft and the driven shaft are on the same axis with a gap between them, the corrugated shaft is sleeved in the gap between the output shaft and the driven shaft and the corrugated shaft is slidably matched with the driven shaft and the output shaft, the first capstan is fixedly connected to the output shaft, and the second capstan is fixedly connected to the driven shaft.

4. The automatic double-drum rope rail-mounted container crane according to claim 3, characterized in that: The first capstan has the same structure as the second capstan, wherein the first capstan is further provided with a reciprocating screw and a guide rod movably mounted on the cross beam, a guide block sleeved on the guide rod and the rope, and a roller frame movably mounted on the guide block, the roller frame rollingly cooperates with the groove on the reciprocating screw; a gap is left between the rope and the guide block, and the guide block is a split structure; the reciprocating screw and the guide rod are both parallel to the axis of the first capstan, one end of the reciprocating screw is interference fit with the fourth gear and movably connected to the shell, the other end of the reciprocating screw is movably connected to the cross beam, the guide block slidingly cooperates with the guide rod, and the reciprocating screw and the first capstan are parallel to each other.

5. The automatic double-drum rope rail-mounted container crane according to claim 3, characterized in that: The output shaft and the driven shaft are both movably connected to the housing, and the first capstan and the second capstan are both provided with ropes connected to the sling, and the ropes pass through the pulley blocks arranged on the crossbeam and the sling in sequence.

6. The automatic double-drum rope rail-mounted container crane according to claim 1, characterized in that: A limit frame and a twist lock are provided at the diagonal parts of the sling, the limit frame is arc-shaped with the arc opening facing the outside of the sling, the twist lock comprises a support rod installed in the sling, a locking pin sleeved in the support rod, a pull rod installed on the locking pin, and a pull rod motor installed in the sling is provided at one end of the pull rod; an indicator plate is provided on the locking pin, the indicator plate extends out of the sling for a certain distance, and the indicator plate is threadedly connected to the locking pin and movably connected to the sling.

7. The automated double-drum rope rail-mounted container crane according to claim 1, characterized in that: The transmission shaft is interference fit with the first gear, one end of the transmission shaft is provided with a second motor mounted on the housing, the ratchet and the second gear are both interference fit with the output shaft, and the middle section of the ratchet is movably connected to the housing.

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