Hydraulic trolley for docking block displacement

Abstract

The invention discloses a hydraulic trolley for docking block displacement, and relates to the technical field of shipbuilding and large equipment supporting. Comprising a vehicle body, and the vehicle body is provided with a telescopic arm mechanism which is driven by a telescopic oil cylinder and can stretch transversely; a hydraulic walking direction mechanism is mounted at the bottom of the vehicle body and integrates front wheels driven by a hydraulic motor speed reducer and an integral deflection type steering connecting rod; jacking oil cylinder assemblies with special connecting rods are symmetrically arranged at the ends of the telescopic arms. And a control cabinet integrating the hydraulic pump station and the electric control system is also arranged on the vehicle body. The overall width is adjusted through the telescopic arm, and the docking block can flexibly pass through dense docking block gaps smaller than 1 meter; and full-hydraulic driving and centralized control are adopted, so that quick alignment, stable jacking and accurate movement of the docking block are realized. The device is compact in structure, flexible in steering and high in environmental adaptability, is specially used for efficient and safe displacement operation of the docking block in the dock, and remarkably improves the adjustment efficiency and the operation safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shipbuilding and large equipment support, in particular to a transfer device, and more particularly to a hydraulic trolley for adjusting the position of a concrete or metal pier in a dock. BACKGROUND

[0002] In the shipbuilding and ship maintenance industry, the dock is the core facility for ship body construction, assembly, repair and maintenance. During this process, the pier, as a key structure for supporting the ship body assembly, its accurate and rapid arrangement and adjustment directly affect the operation efficiency and safety. The traditional pier transport and position fine adjustment mainly relies on forklifts, manual pallet trucks and other general equipment, or completely relies on manpower, which has many inherent defects.

[0003] Firstly, the spatial adaptability is seriously insufficient. The piers in the dock are arranged densely, and the working gap between adjacent piers is usually less than 1 meter. The minimum turning radius of the traditional forklift is usually more than 1.5 meters, which cannot enter such a narrow space to adjust the single pier. Although the manual pallet truck is small in size, it is easy to slip and jam in uneven ground or narrow space, and the operation is extremely inconvenient and the safety hidden danger is outstanding.

[0004] Secondly, the transport efficiency is low, which cannot meet the time limit requirements of modern dock rapid closing. The manual transport method is time-consuming and labor-intensive, and only 2 to 3 piers can be adjusted per hour. Even if the manual pallet truck is used, the efficiency is only improved to 5 to 6 per hour. This efficiency level has become a key bottleneck restricting the overall operation process of the dock.

[0005] Thirdly, the environmental adaptability is poor. The dock operation environment is complex, often accompanied by high humidity, salt spray corrosion, and temperature fluctuations. The metal structural parts of the traditional equipment lack long-term corrosion protection, and the electrical control system has low protection level, which is easy to rust and short circuit in harsh environment, and the reliability and service life of the equipment are greatly reduced.

[0006] Furthermore, although there are attempts to solve the problem of dock pier adjustment in specific scenarios in the prior art, there are obvious limitations. For example, the Chinese invention patent with publication number CN114537615A discloses a dock with underwater adjustable dock pier, which uses underwater robots for operation. Although this scheme can operate in the water injection state, the underwater robot it relies on has a complex structure, and its mobility, stability and control accuracy are insufficient in a narrow and obstacle-filled dock bottom environment, and the cost is high, which is not suitable for conventional dry docks or working conditions that require rapid and frequent adjustment. For another example, the Chinese invention patent with publication number CN112125222A discloses a multifunctional battery carrier for underground coal mines. The vehicle integrates fork loading, hoisting and other functions, but its design is aimed at underground material handling, and the structure is complex and the operation is cumbersome. When dealing with heavy and uniform specification dock piers, the multifunctional manipulator has problems such as difficult alignment, insufficient load stability and low efficiency, and its power and protection form are not suitable for dock environment.

[0007] In summary, the prior art, including general-purpose handling equipment and specific-purpose adjustment devices, has common problems such as poor space passability, low adjustment efficiency, weak environmental adaptability, insufficient operation safety, and lack of professional adaptability for dock pier operation when applied to dock pier displacement operations in the dock. Therefore, there is an urgent need for a dock pier displacement device specifically designed for dock environment, which can flexibly pass through narrow gaps, is efficient, stable, reliable and has good environmental protection capability. SUMMARY

[0008] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a hydraulic trolley for dock pier displacement, aiming to solve the problems of poor passability, low adjustment efficiency, weak environmental adaptability, insufficient operation safety and lack of professional adaptability for dock pier operation of traditional dock pier handling equipment in narrow spaces in the dock.

[0009] To solve the above problems, the present application provides a hydraulic trolley for dock pier displacement, comprising: a vehicle body, on which a telescopic arm mechanism is arranged, the telescopic arm mechanism comprising a telescopic arm that can be telescopically extended laterally and a telescopic power assembly that drives the telescopic arm to extend and retract; a hydraulic walking direction mechanism installed at the bottom of the vehicle body for driving and controlling the walking direction of the trolley; a jacking execution mechanism comprising at least two jacking cylinder assemblies symmetrically arranged at the ends of the telescopic arm, the jacking cylinder assemblies being opposite to the connecting ends of the dock pier, for stably abutting the dock pier to be adjusted and jacking it up; a hydraulic pump station arranged on the vehicle body for providing hydraulic power to the telescopic power assembly, the jacking cylinder assembly and the hydraulic walking direction mechanism, and providing power to the hydraulic execution elements of the whole vehicle; The overall width of the trolley is adjustable through the telescopic arm mechanism to adapt to different lengths of the dock pier and to adapt to the narrow gap, so that the trolley can flexibly pass through the narrow gap between the dock piers and can perform alignment, jacking and positioning operations on the dock piers after passing through.

[0010] As preferred, the telescopic arms are arranged in a symmetrical multi-group structure, and each group of telescopic arms is driven by a telescopic power assembly, which includes a telescopic oil cylinder piston arranged in a telescopic oil cylinder body and fixedly connected to one end of a telescopic oil cylinder rod, and the other end of the telescopic oil cylinder rod is connected to the telescopic arm, and the end of the telescopic oil cylinder body is provided with a telescopic oil cylinder cover. The symmetrical multi-group structure of the telescopic arms driven by the telescopic oil cylinder provides strong, stable and controllable width adjustment power. Compared with manual adjustment or simple mechanical adjustment, hydraulic drive can overcome the large frictional resistance in a narrow space, realize stepless and accurate width adjustment, ensure that the trolley can quickly retract to pass through the narrow gap between the dense dock piers, and reliably expand to adapt to different sizes of the dock piers and provide stable jacking support span, which fundamentally solves the core problems of poor space passability and lack of professional adaptability of traditional equipment.

[0011] As preferred, the jacking oil cylinder assembly includes a connecting rod, a support oil cylinder piston rod, a support oil cylinder body and a support oil cylinder cover, the support oil cylinder piston rod is telescopically arranged in the support oil cylinder body, the connecting rod is fixed to the end of the support oil cylinder piston rod for interfacing with the dock pier, and the end of the support oil cylinder is provided with a support oil cylinder cover. By arranging a special connecting rod fixedly connected to the support oil cylinder piston rod, fast, stable and direct interfacing with the standard interface of the dock pier is realized, and the risks of alignment difficulty, unstable support and easy slipping of the general forklift fork or spreader are avoided. The hydraulic cylinder drive ensures that the jacking process is powerful, controllable in speed and high in synchronization, greatly improves the safety and stability of heavy dock pier jacking operation, and effectively solves the defects of insufficient safety and insufficient bearing stability in traditional operation.

[0012] As preferred, the hydraulic walking direction mechanism includes: a walking support frame mounted on the front of the vehicle body; a driving wheel and a hydraulic drive assembly driving the rotation of the driving wheel, the hydraulic drive assembly being mounted on the walking support frame; the hydraulic drive assembly being a hydraulic motor speed reducer; The swing link assembly is hinged with the walking support frame at the lower part and is provided with a steering part at the upper part. The whole walking support frame and driving wheel can be deflected by swinging the steering part to realize steering. The hydraulic driving assembly of the driving end and the swing link of the steering mechanism are compactly integrated in the front support frame. The hydraulic motor reducer is used as the driving source. Compared with electric or internal combustion driving, it has stronger moisture-proof, corrosion-resistant environmental adaptability and low-speed large-torque characteristics, and is suitable for complex ground of the dock. The whole deflection type steering makes the turning radius extremely small, and even can approximate the steering in place, perfectly overcomes the fatal defect of the traditional forklift that the minimum turning radius is usually more than 1.5 meters and cannot work in a narrow space, and realizes excellent space passing performance.

[0013] As preferred, the swing link assembly comprises a center link, and the steering part is a direction handle fixed on the center link; and the lower end of the center link is movably connected with a hinge seat fixed on the walking support frame through a hinge joint. The mechanical link type steering control mechanism has simple structure, is reliable and intuitive. The operator swings the direction handle to directly drive the front wheel assembly to steer through the center link and the hinge joint, so that precise and direct mechanical feedback and control are realized. Compared with the complex steering wheel steering system or remote control mode of the traditional vehicle, better space position sense and control accuracy are provided for the operator in the narrow and obstacle-rich dock environment, the operation safety and professional adaptability are improved, and the mechanical structure is more corrosion-resistant and easy to maintain.

[0014] As preferred, a control box is fixed at the top end of the center link, one end of the hydraulic driving assembly is electrically connected with the control box, and the control box is electrically connected with the forward control button and the backward control button through the inner end circuit of the steering part, for controlling the running direction of the hydraulic driving assembly, for controlling the forward rotation and reverse rotation of the hydraulic driving assembly, so as to realize the forward movement and backward movement of the driving wheel. The electrical control elements for forward movement and backward movement of the walking driving, the control box and the buttons are highly integrated near the steering control part, i.e. the direction handle, so that the centralization and convenience of human-computer interaction are realized. The operator can control the steering and walking direction with one hand, without frequent shifting of the line of sight or operation position, so that the operation complexity and labor intensity are greatly reduced, and the operation efficiency and safety in the complex environment are improved. It is a special design for the dock to frequently adjust the operation process.

[0015] As preferred, a damping element, i.e. a spring shock absorber, is arranged at the connection between the hinge joint and the hinge seat. The damping element effectively absorbs the impact and vibration caused by the unevenness of the dock ground. This not only protects the mechanical parts such as the steering link mechanism and the hinge joint, prolongs the service life of the equipment, but also significantly improves the comfort of the steering handle and reduces the vibration transmitted to the operator. The environmental adaptability and running stability of the trolley in the typical rough ground working condition of the dock are enhanced, and the related problems such as easy skidding and jamming of the traditional equipment on the bumpy ground are solved.

[0016] As preferably, the bottom end of the telescopic arm is fixedly provided with an axle, and the axle is connected with a driven wheel. The driven wheel is arranged at the bottom of the telescopic arm, and constitutes a stable multi-wheel supporting structure. The weight of the vehicle body and the load is reasonably distributed, and local overload of the vehicle body is avoided. The driven wheel is synchronously telescoped with the telescopic arm, and always maintains good ground contact and supporting stability. Whether the trolley is in the state of contraction for passing through or in the state of expansion for operation, the moving stability can be ensured, and overturning is prevented, and the safety and stability of the device in the load moving process are further improved.

[0017] As preferably, a control cabinet is further arranged on the vehicle body, the hydraulic pump station is integrated in the control cabinet, and an electric control system is integrated in the control cabinet, and is used for controlling the cooperative action of the hydraulic pump station, the hydraulic walking direction mechanism, the telescopic arm mechanism and the jacking execution mechanism.

[0018] Compared with the prior art, the present application has the following beneficial technical effects: The present application breaks through the operation limitation in a narrow space, realizes excellent passability and flexibility, and the telescopic arm mechanism can be telescoped laterally, so that the overall working width of the trolley can be flexibly adjusted according to the actual operation gap. The problem that the traditional forklift cannot enter the narrow channel between the dense piers due to the too large minimum turning radius is fundamentally solved, and the operational difficulty that the manual pallet truck is difficult to accurately turn and align in the extreme space is also solved, so that the space adaptation and passability of the device in the complex and compact dock layout are significantly improved.

[0019] The present application greatly improves the efficiency of the pier displacement operation, meets the requirement of rapid production rhythm, integrates the full-hydraulic driving and the cooperative control of the electric control system, realizes the full-process mechanization and integrated operation from the autonomous passing through and positioning, the automatic alignment of the telescopic arm, the hydraulic stable-speed jacking, the stable movement of the load to the accurate pier landing and placement. Compared with the traditional manual carrying or the manual pallet truck carrying, the device can compress the single operation cycle time to several minutes, and is expected to efficiently adjust 12-20 piers per hour, so that the operation efficiency is significantly improved, and the time requirement of the modern dock rapid closing is effectively supported.

[0020] The present application comprehensively guarantees the safety and stability of the heavy load operation, the jacking execution mechanism is driven by the hydraulic cylinder and has reliable stable support and lifting performance, the risk of accidental falling of the pier during jacking is fundamentally eliminated, the posture of the pier during jacking and moving is ensured to be stable, and the safety hidden danger of the pier tilting or sliding caused by the deformation of the device is eliminated.

[0021] This invention achieves specialization and high adaptability for dockwork operations. This device is not a simple application of general-purpose handling equipment, but rather a specialized structure tailored to the structural characteristics and adjustment procedures of docks. The telescopic boom spacing is infinitely adjustable to accommodate docks of different sizes and specifications; the lifting mechanism's connecting rod can directly and securely connect to the dock's standard interface, making operation simple and reliable. The entire system deeply integrates mechanical, hydraulic, and electrical controls, ensuring a smooth process and significantly reducing the skill requirements and labor intensity for operators. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the hydraulic trolley used for dock pier displacement according to the present invention.

[0023] Figure 2 This is a schematic diagram of the forward structure of the hydraulic trolley used for dock pier displacement according to the present invention.

[0024] Figure 3 This is a schematic diagram of the downward structure of the hydraulic trolley used for dock pier displacement according to the present invention.

[0025] Figure 4 This is a schematic diagram of the telescopic power assembly.

[0026] Figure 5 for Figure 4 Cross-sectional view of AA.

[0027] Figure 6 This is a schematic diagram of the lifting cylinder assembly.

[0028] Figure 7 for Figure 6 Cross-sectional view of BB in the middle.

[0029] Figure 8 This is a schematic diagram of the hydraulic travel direction mechanism.

[0030] Figure 9 This is a schematic diagram of the forward structure of the hydraulic travel direction mechanism.

[0031] Figure 10 This is a schematic diagram of the lateral structure of the hydraulic travel direction mechanism.

[0032] 1. Vehicle body; 2. Telescopic boom mechanism; 21. Telescopic boom; 22. Telescopic power assembly; 221. Telescopic cylinder body; 222. Telescopic cylinder piston rod; 223. Telescopic cylinder head; 224. Telescopic cylinder piston; 225. Sealing assembly; 3. Hydraulic travel direction mechanism; 30. Driven wheel; 31. Central connecting rod; 32. Control unit; 33. Hinge joint; 34. Hinge seat; 35. Travel support frame; 36. Hydraulic drive assembly; 37. Drive wheel; 38. Control box; 39. Shock absorber; 391. Forward control button; 392. Reverse control button; 4. Lifting actuator; 41. Lifting cylinder assembly; 42. Connecting rod; 43. Support cylinder piston rod; 44. Support cylinder body; 45. Support cylinder head; 5. Hydraulic pump station; 6. Dock block; 7. Control cabinet. Detailed Implementation

[0033] The present invention will be further explained and described below with reference to the accompanying drawings and embodiments.

[0034] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. It should be noted that the embodiments described below are intended to explain the invention and not to limit the scope of protection of the present invention.

[0035] like Figures 1 to 3 As shown, the present invention provides a hydraulic trolley for dock pier displacement, which mainly includes a trolley body 1, a telescopic arm mechanism 2, a hydraulic walking direction mechanism 3, a lifting execution mechanism 4, a hydraulic pump station 5, and a control cabinet 7.

[0036] The vehicle body 1, serving as the basic load-bearing frame of the entire device, is welded from high-strength steel and its surface is treated with rust prevention and salt spray resistance to adapt to the humid and corrosive working environment of the dock. The hydraulic travel direction mechanism 3 is installed at the front of the vehicle body 1; the control cabinet 7 is fixedly installed on the upper middle part of the vehicle body 1.

[0037] Reference Figure 1 and Figure 3 As shown, the telescopic boom mechanism 2 is arranged symmetrically on both sides of the vehicle body 1. Each telescopic boom mechanism 2 includes a laterally extendable telescopic boom 21 and a telescopic power assembly 22 for driving the telescopic boom 21 to extend and retract. The telescopic boom 21 adopts a multi-layered nested box-shaped structure to ensure its rigidity and stability under load. Figure 4 and Figure 5As shown, the telescopic power assembly 22 specifically includes a telescopic cylinder body 221, a telescopic cylinder piston rod 222, a telescopic cylinder head 223, and a telescopic cylinder piston 224 arranged in the cylinder body. The telescopic cylinder body 221 is fixedly installed on the frame of the vehicle body 1. One end of the telescopic cylinder piston rod 222 is fixedly connected with the telescopic cylinder piston 224, and the other end is hingedly or fixedly connected with the root of the innermost telescopic arm 21. When hydraulic oil enters the rodless chamber or the rod chamber of the telescopic cylinder body 221 through the pipeline, the telescopic cylinder piston 224 and the piston rod 222 are driven to move, thereby driving the telescopic arms 21 on both sides to synchronously contract inward or extend outward, achieving stepless adjustment of the overall working width of the trolley. The telescopic cylinder head 223 is provided with a sealing assembly 225 between the cylinder body 221 to prevent hydraulic oil leakage. In this way, the trolley can be contracted to the smallest width when not working, and can flexibly pass through the densely arranged piers 6 with a gap usually less than 1 meter; after reaching the target pier position, the telescopic arms 21 can be extended so that the jacking execution mechanism 4 is aligned with the docking points on both sides of the pier.

[0038] As shown in Figure 6 and Figure 7 The jacking execution mechanism 4 includes at least two jacking cylinder assemblies 41 symmetrically arranged at the outer ends of the left and right telescopic arms 21. Each jacking cylinder assembly 41 includes a connecting rod 42, a support cylinder piston rod 43, a support cylinder body 44, and a support cylinder head 45. The support cylinder body 44 is fixedly installed at the end of the telescopic arm 21. The support cylinder piston rod 43 is telescopically arranged in the support cylinder body 44, and the top end is fixedly connected with the connecting rod 42. The connecting rod 42 is specially designed according to the standard interface of the pier 6 to be adjusted, such as a socket or a lifting lug, which can achieve quick and stable insertion or hanging, ensuring that a rigid connection is formed between the load and the trolley during jacking, avoiding slipping. When jacking the pier, hydraulic oil enters the rodless chamber of the support cylinder body 44, pushing the support cylinder piston rod 43 and the connecting rod 42 to extend upward, thereby stably jacking the pier 6 off the ground.

[0039] As shown in Figures 8 to 10 The hydraulic walking direction mechanism 3 is integrally installed at the front bottom of the vehicle body 1. It mainly includes a walking support frame 35, a hydraulic drive assembly 36, a driving wheel 37, and a swing link assembly. The walking support frame 35 is connected with the front part of the vehicle body 1 through a rotary support or a main shaft, and can rotate horizontally relative to the vehicle body 1. The hydraulic drive assembly 36 is a hydraulic motor reducer, and its shell is fixedly installed on the walking support frame 35. Its output shaft drives the driving wheel 37 to rotate, providing power for the trolley to walk. The use of a hydraulic motor for driving has the advantages of low speed, large torque, explosion-proof, anti-pollution, and strong environmental adaptability, especially suitable for dock working conditions.

[0040] The swing linkage assembly is used to realize steering, which includes a center linkage 31, a direction handle as a steering part 32, a hinge joint 33 and a hinge base 34. The lower end of the center linkage 31 is movably connected with the hinge base 34 fixed on the walking support frame 35 through the hinge joint 33 to form a hinge point. The direction handle 32 is fixed on the top end of the center linkage 31. The operator pushes or pulls the direction handle 32, and through the transmission of the center linkage 31 and the hinge point, the whole walking support frame 35, the hydraulic drive assembly 36 and the driving wheel 37 are directly driven to deflect around the connecting point with the vehicle body 1, so as to realize the steering of the trolley. The overall deflection type steering mechanism has extremely small turning radius and excellent maneuverability. Preferably, a spring shock absorber is arranged as a damping element 39 at the connection between the hinge joint 33 and the hinge base 34, so as to buffer the ground impact, protect the steering mechanism and improve the operation comfort.

[0041] Further, a control box 38 is fixedly arranged at the top end of the center linkage 31. The hydraulic drive assembly 36 is electrically connected with the control box 38 through a line. The forward control button 391 and the backward control button 392 are integrally arranged on the direction handle 32, and the lines thereof are also connected to the control box 38. The operator holds the direction handle 32 with one hand, and the thumb can conveniently press the forward or backward button, so as to control the forward rotation or reverse rotation of the hydraulic drive assembly 36 through the circuit in the control box 38, thereby realizing the forward movement, backward movement and speed regulation of the trolley, and realizing the high concentration and humanization of the walking driving and steering control.

[0042] As shown in Figure 1 and Figure 2 A wheel shaft is further fixedly arranged at the bottom end of the telescopic arm 21, and the wheel shaft is connected with the driven wheel 30. The driven wheel 30 does not provide power, and only plays a supporting and following role. The arrangement makes the trolley always maintain stable support of at least four points, i.e. two driving wheels 37 and at least two driven wheels 30, when the telescopic arm 21 is stretched or retracted, reasonably distributes the vehicle body and load weight, and ensures the stability and smooth movement of the equipment in various states, effectively preventing overturning.

[0043] The hydraulic pump station 5 generally includes a motor, a hydraulic pump, an oil tank, a valve group and the like, and the electric control system of the whole vehicle including PLC, a controller, electrical elements and the like are integrally installed in the control cabinet 7. The control cabinet 7 has high protection level, can effectively prevent dust and water splashing, and protects the internal precise hydraulic and electrical elements from the influence of the harsh environment of the dock. The electric control system is used to receive operation instructions, coordinate the output of the hydraulic pump station 5, and then accurately control the hydraulic drive assembly 36 of the telescopic power assembly 22, the jacking oil cylinder assembly 41 and the hydraulic walking direction mechanism 3 to act in a predetermined order and parameters, so as to realize the automatic and process-oriented displacement operation of the dock pier.

[0044] In order to facilitate the understanding of the above technical solutions of the present application, the above technical solutions of the present application are described in detail below through specific use modes.

[0045] The specific working process is as follows: first, the operator starts the trolley, controls the telescopic power assembly 22 to make the two telescopic arms 21 shrink to the minimum width. The operator holds the direction handle 32 to control the trolley to flexibly pass through the dense array of piers 6 with the minimum turning radius, and reaches the pier position to be adjusted. Then, the operator fine-tunes the position of the trolley, so that the jacking oil cylinder assemblies 41 at the ends of the two telescopic arms 21 are basically aligned with the docking points on the two sides of the pier 6. Then, the telescopic arms 21 are controlled to extend outward until the connecting rods 42 are accurately inserted or hung on the interfaces of the pier 6. After confirming the stable docking, the jacking actuator 4 is controlled to make the jacking oil cylinder assemblies 41 act synchronously to stably jack the pier 6 off the ground to a certain height. Then, the operator controls the trolley to move the pier 6 to the target position through the direction handle 32. After reaching the target position, the jacking oil cylinder assemblies 41 are controlled to slowly retract to accurately place the pier 6 in place. Then, the connecting rods 42 are disconnected from the pier 6, the telescopic arms 21 are retracted, and the trolley can drive away to prepare for the adjustment operation of the next pier.

[0046] In the description of the present application, it should be noted that the positions or position relationships indicated by the terms "upper", "lower", etc. are based on the positions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the present application. Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0047] It should be noted that, in the present application, the relational terms such as "first" and "second", and the like, are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0048] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Accordingly, the scope of the application is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A hydraulic trolley for dock pier displacement, characterized in that, include: The vehicle body (1) is provided with a telescopic arm mechanism (2), which includes a telescopic arm (21) that can be extended laterally and a telescopic power assembly (22) that drives the telescopic arm (21) to extend and retract. The hydraulic travel direction mechanism (3) is installed at the bottom of the vehicle body (1) and is used to drive and control the travel direction of the trolley; The lifting actuator (4) includes at least two lifting cylinder assemblies (41) symmetrically arranged at the end of the telescopic boom (21), the lifting cylinder assemblies (41) being connected to the dock pier (6) and used to lift and support the dock pier (6). A hydraulic pump station (5) is installed on the vehicle body (1) to provide hydraulic power to the telescopic power assembly (22), the lifting cylinder assembly (41) and the hydraulic travel direction mechanism (3); The telescopic arm mechanism (2) can adjust the overall width of the trolley to adapt to the needs of docks (6) of different lengths and to pass through narrow gaps. It can also perform alignment, lifting and displacement actions on the docks (6) after passing through.

2. The hydraulic trolley for dock pier displacement according to claim 1, characterized in that, The telescopic arms (21) are arranged in multiple symmetrical structures. Each telescopic arm (21) is driven by a telescopic power assembly (22). The telescopic power assembly (22) includes a telescopic cylinder piston (224). The telescopic cylinder piston (224) is located inside the telescopic cylinder body (221) and one end of the telescopic cylinder piston rod (222) is fixedly connected. The other end of the telescopic cylinder piston rod (222) is connected to the telescopic arm (21). The end of the telescopic cylinder body (221) is provided with a telescopic cylinder cover (223).

3. The hydraulic trolley for dock pier displacement according to claim 1, characterized in that, The lifting cylinder assembly (41) includes a connecting rod (42), a supporting cylinder piston rod (43), a supporting cylinder body (44), and a supporting cylinder cover (45). The supporting cylinder piston rod (43) is telescopically disposed inside the supporting cylinder body (44). The connecting rod (42) is fixed to the end of the supporting cylinder piston rod (43) for docking with the dock pier (6). The end of the supporting cylinder (44) is provided with a supporting cylinder cover (45).

4. The hydraulic trolley for dock pier displacement according to claim 1, characterized in that, The hydraulic travel direction mechanism (3) includes: The running support frame (35) is installed at the front of the vehicle body (1); The drive wheel (37) and the hydraulic drive assembly (36) that drives its rotation are mounted on the walking support frame (35); the hydraulic drive assembly (36) is a hydraulic motor reducer. The swing linkage assembly is hinged to the walking support frame (35) at its lower part and has an operating part (32) at its upper part. By swinging the operating part (32), the walking support frame (35) and the drive wheel (37) can be driven to deflect as a whole to achieve steering.

5. The hydraulic trolley for dock pier displacement according to claim 4, characterized in that, The swing linkage assembly includes a central link (31), and the operating part (32) is a direction handle fixed on the central link (31); the lower end of the central link (31) is movably connected to the hinge seat (34) fixed on the walking support frame (35) through a hinge joint (33).

6. The hydraulic trolley for dock pier displacement according to claim 5, characterized in that, A control box (38) is fixedly installed at the top of the central connecting rod (31). One end of the hydraulic drive assembly (36) is electrically connected to the control box (38). The control box (38) is electrically connected to the forward control button (391) and the backward control button (392) through the internal wiring of the operating part (32) to control the operating direction of the hydraulic drive assembly (36).

7. The hydraulic trolley for dock pier displacement according to claim 4, characterized in that, A damping element (39) is also provided at the connection between the hinge joint (33) and the hinge seat (34).

8. The hydraulic trolley for dock pier displacement according to claim 6, characterized in that, The telescopic arm (21) is fixedly provided with a wheel axle at its bottom end, and the wheel axle is connected to the driven wheel (30).

9. The hydraulic trolley for dock pier displacement according to claim 1, characterized in that, The vehicle body (1) is also equipped with a control cabinet (7), and the hydraulic pump station (5) is integrated in the control cabinet (7). The control cabinet (7) is equipped with an electrical control system for controlling the coordinated action of the hydraulic pump station (5), the hydraulic walking direction mechanism (3), the telescopic arm mechanism (2) and the lifting execution mechanism (4).

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