Load control device of hydraulic trolley jacking mechanism

Abstract

The utility model relates to the technical field of hydraulic trolleys, and discloses a load control device of a hydraulic trolley jacking mechanism, which comprises a jacking device, a control valve group, an integrated pipeline and a load valve group which are arranged on a hydraulic trolley, the jacking oil cylinder assembly is composed of an upper jacking oil cylinder and a lower jacking oil cylinder, the upper jacking oil cylinder is used for jacking migration operation, the lower jacking oil cylinder is used for 90-degree rotation operation of the hydraulic trolley, and an oil port of the upper jacking oil cylinder and an oil port of the lower jacking oil cylinder are designed on the same cylinder barrel; the jacking device is connected with the control valve group and the load valve group through an integrated pipeline; according to the hydraulic trolley, the load control function and the local rotation function of the hydraulic trolley are achieved, meanwhile, the phenomena of pipeline extrusion, pulling, accumulation and mess in the rotation process of the hydraulic trolley are eliminated, the stability of the hydraulic trolley in the migration and rotation process is guaranteed, and it is guaranteed that no damage is caused to a ship by external load impact force.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic trolley technical field more specifically, the utility model relates to a kind of hydraulic trolley jacking mechanism load control device. BACKGROUND

[0002] In recent years, the production process of shipbuilding berth is applied more and more widely in the field of shipbuilding, and the production process has low construction cost, less investment in related supporting facilities, short product production cycle and high product production efficiency compared with the production process of shipbuilding dock. After the ship is manufactured on the shipbuilding berth, the product transfer system composed of multiple hydraulic trolleys is used to transfer the ship to the launching device such as ship lift, floating dock or semi-submersible barge, and the launching device and the shipbuilding berth are connected through the bridge device. During the transfer of the ship, the height difference between the launching device and the shipbuilding berth is in a floating state due to the influence of factors such as load change and sea tide change, and is constantly changing, so the jacking mechanism load control device and method of multiple hydraulic trolleys are required to be extremely strict.

[0003] At present, the commonly used hydraulic trolley jacking mechanism only has the function of upward jacking, and does not have the function of downward jacking and rotation. In the field of ship repair, when the site is limited and rotation of 90° is required, various ship lifting devices need to be arranged in advance, and all hydraulic trolleys need to be transferred to an open site for hoisting and direction changing, which is extremely cumbersome to operate. At the same time, it is likely to cause leakage of pipelines and pulling and breaking of cables, which brings serious safety hazards to construction and great risks to the transfer of ships. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a hydraulic trolley jacking mechanism load control device.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hydraulic trolley jacking mechanism load control device, comprising a jacking device, a control valve group, an integrated pipeline and a load valve group installed on the hydraulic trolley, wherein the jacking device is provided with a jacking cylinder assembly, the jacking cylinder assembly is composed of an upward jacking cylinder and a downward jacking cylinder, the upward jacking cylinder is used for jacking operation, the downward jacking cylinder is used for rotation operation of the hydraulic trolley, and the oil port of the upward jacking cylinder and the oil port of the downward jacking cylinder are designed on the same cylinder barrel; the jacking device, the control valve group and the load valve group are connected through the integrated pipeline.

[0006] As a preferred technical scheme of the utility model, the jacking oil cylinder assembly is composed of an upper jacking oil cylinder, a displacement sensor, a lower jacking oil cylinder, an oil cylinder base and an integrated oil port, wherein the displacement sensor end head is located between the upper jacking oil cylinder and the lower jacking oil cylinder, and the extension end of the displacement sensor is installed in the rodless cavity of the upper jacking oil cylinder; the oil cylinder base is arranged at the lower part of the lower jacking oil cylinder, and the integrated oil port is provided with a plurality of integrated oil ports.

[0007] As a preferred technical scheme of the utility model, the control valve group is installed on the inner side of the frame of the hydraulic trolley, and the control valve group is composed of a digital high-frequency response valve, an MB balance valve, a PT pressure sensor, a WE control valve and a Z hydraulic lock.

[0008] As a preferred technical scheme of the utility model, the load valve group is installed at the rodless cavity oil port of the upper jacking oil cylinder, and the load valve group is composed of an LB series explosion-proof pipe valve and an RD series safety valve.

[0009] Compared with the prior art, the utility model has the beneficial effects that: the utility model realizes the load control function and the local rotation function of the hydraulic trolley, eliminates the phenomena of pipeline extrusion, pulling, accumulation and disorder of the hydraulic trolley in the rotation process, guarantees the stability of the hydraulic trolley in the migration and rotation process, guarantees the non-damage of the external load impact force to the ship, guarantees the safety of the operating personnel and the diversity of the berth production line, and greatly improves the safety and migration efficiency of the ship migration operation. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structural schematic view of the utility model;

[0011] Figure 2 It is a front view of the utility model;

[0012] Figure 3 It is a top view of the utility model;

[0013] Figure 4 It is a structural schematic view of the control valve group of the utility model;

[0014] Figure 5 It is a front view of the control valve group of the utility model;

[0015] Figure 6 It is a top view of the control valve group of the utility model;

[0016] Figure 7 It is a structural schematic view of the jacking oil cylinder assembly of the utility model;

[0017] Figure 8 It is a sectional view of the jacking oil cylinder assembly of the utility model;

[0018] In the diagram: 1. Lifting device; 2. Control valve assembly; 3. Integrated piping; 4. Load valve assembly; 5. Lifting cylinder assembly; 6. Upper lifting cylinder; 7. Displacement sensor; 8. Lower lifting cylinder; 9. Cylinder base; 10. Integrated oil port; 11. Digital high-frequency response valve; 12. MB balance valve; 13. PT pressure sensor; 14. WE control valve; 15. Z hydraulic lock; 16. RD series safety valve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4 As shown, this utility model provides a load control device for a hydraulic trolley lifting mechanism, including a lifting device 1, a control valve group 2, an integrated pipeline 3, and a load valve group 4 installed on the hydraulic trolley. The lifting device 1 is provided with a lifting cylinder assembly 5, which consists of an upper lifting cylinder 6 and a lower lifting cylinder 8. The upper lifting cylinder 6 is used for lifting and moving operations, and the lower lifting cylinder 8 is used for 90° rotation of the hydraulic trolley. The oil ports of the upper lifting cylinder 6 and the lower lifting cylinder 8 are designed on the same cylinder. The lifting device 1 is connected to the control valve group 2 and the load valve group 4 through the integrated pipeline 3.

[0021] The lifting cylinder assembly 5 is designed as an integrated unit, consisting of an upper lifting cylinder 6 and a lower lifting cylinder 8. The upper lifting cylinder 6 is used for lifting and moving the ship, while the lower lifting cylinder 8 is used for rotating the hydraulic trolley 90°. At the same time, the oil ports of the upper lifting cylinder 6 and the lower lifting cylinder 8 are designed on the same cylinder, avoiding messy and disordered pipelines and rotation pulling phenomena.

[0022] The lifting cylinder assembly 5 consists of an upper lifting cylinder 6, a displacement sensor 7, a lower lifting cylinder 8, a cylinder base 9, and integrated oil ports 10. The displacement sensor 7 is located between the upper and lower lifting cylinders 6 and 8, with its extended end installed in the rodless cavity of the upper lifting cylinder 6 for real-time monitoring of the lifting displacement. Cable routing holes are provided on the cylinder sidewall for convenient cable routing, saving installation space and ensuring the safety of the displacement sensor 7. The cylinder base 9 is located below the lower lifting cylinder 8, and multiple integrated oil ports 10 are provided.

[0023] The upper lifting oil cylinder 6, the displacement sensor 7, the PT pressure sensor 13, the control valve group 2, the load valve group 4 and the like constitute a lifting load control system; the control valve group 2 is installed on the inner side of the frame, and is composed of a digital high-frequency response valve 11, an MB balance valve 12 and the PT pressure sensor 13; and the load valve group 4 is installed at the rodless cavity oil port of the upper lifting oil cylinder 6 and is composed of an LB series anti-explosion pipe valve and an RD series safety valve 16.

[0024] The lower lifting oil cylinder 8, the oil cylinder base 9 and the control valve group 2 constitute a rotating control system for 90° rotation operation of the hydraulic trolley.

[0025] The working principle and use process of the utility model are as follows:

[0026] The plurality of hydraulic trolleys arranged on the product ship bottom according to the process layout are set in the application, adopt an active control mode, are automatically divided into four areas, the load pressure of the upper lifting oil cylinder 6 in each area is automatically adjusted to the same pressure according to the pre-set program, and the total pressure of each area can be set to the same pressure or different pressure according to the different product ships. After the synchronous lifting with load reaches the required set value, the digital high-frequency response valve 11 is automatically closed, and the upper lifting oil cylinder 6 stops moving. The digital high-frequency response valve 11, the displacement sensor 7 installed in the rodless cavity of the upper lifting oil cylinder 6 and the PT pressure sensor 13 installed on the control valve group 2 constitute a closed-loop control system, and the system has the function of actively adjusting the ship posture. The MB balance valve 12 is used for pressure maintaining of a single lifting system, the LB series anti-explosion pipe valve is automatically closed when the rubber pipe bursts, so that the upper lifting oil cylinder 6 does not appear pressure loss, and the RD series safety valve 16 ensures that the upper lifting oil cylinder 6 does not appear cylinder burst after the LB series anti-explosion pipe valve is closed.

[0027] In the process of moving the product ship from the ship lift to the dock, the lifting system automatically monitors the pressure of the lifting oil cylinder of each hydraulic trolley in real time, simultaneously calculates the uniform load pressure of the four areas, and actively sends a signal to the hydraulic trolley to perform pressure increasing or pressure reducing operation in the case of excessive pressure fluctuation, so that the system operates under the uniform load condition. When moving to the cross rail, the product ship is placed on the ship lifting device at this time, the upper lifting oil cylinder 6 is retracted, the lower lifting oil cylinder 8 is operated to be deep, the oil cylinder base 9 can lift the hydraulic trolley from the ground, the hydraulic trolley is rotated by 90° to the other side rail of the cross rail, the lower lifting oil cylinder 8 is retracted after being rotated in place, and then the upper lifting oil cylinder 6 is lifted in place, so that the next stage of moving operation is performed.

[0028] Because the active control automatic equal load function is adopted, the single trolley is an independent system and also forms an equal load system with other trolleys, real-time dynamic monitoring, and operation is extremely simple. At the same time, there is no connection of the series pipeline between the trolleys, the leakage danger point of the series pipeline is eliminated, and the operation difficulty is eliminated, the operation safety and the operation efficiency are improved, the product ship is provided with the guarantee for the migration. Even in the extreme working condition, when the single trolley has a problem, because the single trolley is an independent system, only the clutch of the trolley is opened, and the trolley is in the follow-up state, at this time, the trolley does not participate in the migration operation, the system actively excludes the trolley, and the grouping calculation is re-performed, so the migration operation of the whole system is not affected.

[0029] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or action from another entity or action, and do not necessarily require or imply that these entities or actions have any such actual relationship or order. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or inherent to such a process, method, article or device.

[0030] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A load control device for a hydraulic trolley lifting mechanism, characterized in that, The device includes a lifting device (1), a control valve group (2), an integrated pipeline (3), and a load valve group (4) installed on a hydraulic trolley. The lifting device (1) is equipped with a lifting cylinder assembly (5), which consists of an upper lifting cylinder (6) and a lower lifting cylinder (8). The upper lifting cylinder (6) is used for lifting and moving operations, and the lower lifting cylinder (8) is used for 90° rotation of the hydraulic trolley. The oil ports of the upper lifting cylinder (6) and the lower lifting cylinder (8) are designed on the same cylinder. The lifting device (1) is connected to the control valve group (2) and the load valve group (4) through the integrated pipeline (3).

2. The load control device for a hydraulic trolley lifting mechanism according to claim 1, characterized in that: The lifting cylinder assembly (5) consists of an upper lifting cylinder (6), a displacement sensor (7), a lower lifting cylinder (8), a cylinder base (9), and an integrated oil port (10). The displacement sensor (7) is located between the upper lifting cylinder (6) and the lower lifting cylinder (8), and the extended end of the displacement sensor (7) is installed in the rodless cavity of the upper lifting cylinder (6). The cylinder base (9) is located at the lower part of the lower lifting cylinder (8), and multiple integrated oil ports (10) are provided.

3. The load control device for a hydraulic trolley lifting mechanism according to claim 1, characterized in that: The control valve assembly (2) is installed inside the frame of the hydraulic trolley. The control valve assembly (2) consists of a digital high-frequency response valve (11), an MB balance valve (12), a PT pressure sensor (13), a WE control valve (14), and a Z hydraulic lock (15).

4. The load control device for a hydraulic trolley lifting mechanism according to claim 1, characterized in that: The load valve assembly (4) is installed at the rodless chamber oil port of the upper lifting cylinder (6). The load valve assembly (4) consists of an LB series explosion-proof pipe valve and an RD series safety valve (16).

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