Auxiliary tension adjusting device for pull rod of ship loader

Abstract

An auxiliary tension adjusting device for a pull rod of a ship loader comprises a fixing seat, a hydraulic telescopic device and an adjusting connecting plate, the hydraulic telescopic device is arranged at the end of the pull rod through the fixing seat, a telescopic rod of the hydraulic telescopic device is connected with an overhanging cantilever structure, and the tension of the pull rod is adjusted by changing the telescopic amount of the telescopic rod of the hydraulic telescopic device. Two hydraulic telescopic devices are arranged on one pull rod, the two hydraulic telescopic devices are arranged close to the two ends of the overhanging cantilever structure respectively, and the pressure of the two hydraulic telescopic devices can be controlled through a manual hydraulic pump and can also be controlled through a hydraulic pump station with a balance valve. The tension adjustment of the pull rod of the ship loader can be independently completed, the cost of the tension adjustment work is effectively reduced, different pull rod configurations can be adapted through different hydraulic sources, and the application range of the design is effectively expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ship loader pull rod tension auxiliary adjusting device, especially a ship loader pull rod tension auxiliary adjusting device. BACKGROUND

[0002] The pull rod is an important bearing component of common port mechanical equipment such as a shore crane, a grab ship unloader and a ship loader, and is used to maintain the overall stability of the main body steel structure, improve the stress state of the overhanging cantilever structure such as a beam and an arm, reduce the equipment weight and reduce the manufacturing cost, and is generally used in pairs.

[0003] The port machinery with a large overhanging distance usually uses multiple groups of pull rods such as front, middle and rear pull rods to jointly act, and the tension of each group of pull rods is distributed according to a certain proportion according to different positions. In the actual manufacturing process, due to the influence of factors such as steel structure deformation and cumulative error, the length and stress state of each group of pull rods are difficult to achieve ideal results, causing the height difference of the left and right sides of the beam or arm to exceed the standard, affecting the operation of the equipment. The tension borne by each pull rod is inconsistent, and the weak part is prone to fatigue fracture under alternating load, affecting the safety of the equipment.

[0004] In the prior art, the pull rod usually adopts an eccentric shaft, an eccentric sleeve or adjusts the length of an adjusting connecting plate to adjust the length of the pull rod, and the tension balance of the pull rod is realized by detecting the stress of the pull rod through a strain gauge.

[0005] Although this tension adjusting method can realize the tension balance of the pull rod, it still has the following defects:

[0006] 1. A lifting device needs to be used to assist in lifting to reduce the component self-weight load borne by the pull rod during the adjusting process, the operation is complicated, and the adjusting operation cost is high.

[0007] 2. The tension error of the pull rod is large through stress detection, resulting in poor tension adjusting accuracy.

[0008] The information disclosed in this background section is only intended to increase the understanding of the general background of the application and should not be considered as admitting or implying that the information constitutes prior art that is known to those of ordinary skill in the art. SUMMARY

[0009] The utility model aims at overcoming the defects of high tension adjusting work cost and poor accuracy in the prior art, and provides a ship loader pull rod tension auxiliary adjusting device with low tension adjusting work cost and high accuracy.

[0010] To achieve the above purpose, the technical solution of the utility model is as follows:

[0011] The application discloses a tension auxiliary adjusting device for a ship loader pull rod, which comprises a fixing base, a hydraulic telescopic device and an adjusting connecting plate.

[0012] The fixing base is fixedly arranged at the end of the pull rod, and the hydraulic telescopic device is fixedly arranged on the fixing base.

[0013] One end of the adjusting connecting plate is connected with the end of the pull rod, and the other end of the adjusting connecting plate is hingedly connected with the outer extension cantilever structure.

[0014] The hydraulic telescopic device adjusts the tension of the pull rod by changing the telescopic length of the telescopic rod, and the adjusting connecting plate is used for keeping the distance between the end of the pull rod and the outer extension cantilever structure.

[0015] The hydraulic telescopic device comprises a front telescopic device and a rear telescopic device, which are arranged on the two sides of the pull rod respectively.

[0016] The auxiliary adjusting device further comprises two manual hydraulic pumps, the hydraulic output ends of the two manual hydraulic pumps are respectively communicated with the oil inlet ends of the hydraulic telescopic devices, and the end of the adjusting connecting plate is hingedly connected with the end of the pull rod.

[0017] The auxiliary adjusting device further comprises a hydraulic pump station, the hydraulic output end of the hydraulic pump station is communicated with the oil inlet ends of the front telescopic device and the rear telescopic device through a synchronization valve, and the end of the adjusting connecting plate is fixedly connected with the end of the pull rod as an integral structure.

[0018] The hydraulic telescopic device comprises a jack, a connecting screw rod and a screw rod hinged support, the jack is fixedly arranged on the fixing base, a pressure gauge is arranged in series on the oil inlet of the jack, the telescopic end of the jack is fixedly connected with one end of the connecting screw rod, the other end of the connecting screw rod is hingedly connected with the screw rod hinged support, the screw rod hinged support is fixedly arranged on the outer extension cantilever structure, and the connecting screw rod is arranged in parallel with the pull rod.

[0019] The adjusting connecting plate comprises a connecting plate, an eccentric sleeve and a connecting plate hinged support, one end of the connecting plate is hingedly connected with the end of the pull rod, the other end of the connecting plate is hingedly connected with the connecting plate hinged support through the eccentric sleeve, and the connecting plate hinged support is fixedly arranged on the outer extension cantilever structure.

[0020] The eccentric sleeve is used for keeping the distance between the end of the pull rod and the outer extension cantilever structure by eccentric rotation.

[0021] The screw rod hinge support is a double lug plate structure, the fixed seat is a U-shaped fork structure, and the opening direction of the fixed seat is away from the pull rod;

[0022] The jack is arranged in the fixed seat, one end of the connecting screw rod is a lug structure, the connecting screw rod is hinged to the screw rod hinge support through the lug structure thereon, and the other end of the connecting screw rod is connected to the telescopic end of the jack through a fixing nut.

[0023] The end face of the fixed seat, away from the screw rod hinge support, is a mounting end face, the jack is fixed on the mounting end face, a boss is arranged on the mounting end face, away from the pull rod, and the boss is used for preventing the jack from slipping.

[0024] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0025] 1. In the tension auxiliary adjusting device for the pull rod of the ship loader, the hydraulic telescopic device is arranged at the end of the pull rod through the fixed seat, the telescopic rod of the hydraulic telescopic device is connected to the outer extension cantilever structure, the tension of the pull rod is adjusted by changing the telescopic amount of the telescopic rod of the hydraulic telescopic device, and the distance between the end of the pull rod and the outer extension cantilever structure is fixed through the adjusting connecting plate after the tension of the pull rod is adjusted, and the lifting equipment is not needed to assist. Therefore, the tension of the pull rod of the ship loader can be independently adjusted, and the cost of the tension adjusting work is effectively reduced.

[0026] 2. In the tension auxiliary adjusting device for the pull rod of the ship loader, two hydraulic telescopic devices are arranged on one pull rod, and the two hydraulic telescopic devices are arranged near the two ends of the outer extension cantilever structure. When the pull rod is a plate type pull rod, the pressure of the two hydraulic telescopic devices is controlled by one manual hydraulic pump, the tension on the two sides of the pull rod can be accurately adjusted, and the angle of the pull rod can be finely adjusted. When the pull rod is an H type or a round pipe type pull rod, the pressure of the two hydraulic telescopic devices is controlled by one hydraulic pump station with a balance valve, the balance valve keeps the pressure of the two hydraulic telescopic devices the same, the hydraulic pump station outputs higher hydraulic pressure, and the higher tension of the H type or the round pipe type pull rod can be adjusted. Therefore, the different pull rods can be matched by different hydraulic sources, and the application range of the design is effectively expanded.

[0027] 3. In the tension auxiliary adjusting device for the pull rod of the ship loader, the pressure table is arranged in series on the oil inlet of the jack, the tension value of the pull rod can be accurately calculated by multiplying the pressure value displayed on the pressure table by the piston sectional area of the jack, the error is small, and the tension adjusting accuracy is high. Therefore, the tension value of the pull rod can be accurately calculated by the internal pressure of the jack, and the accuracy of the tension adjusting is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the installation position of the utility model.

[0029] Figure 2 is a schematic diagram of the structure of the utility model in example 1.

[0030] Figure 3 is a schematic diagram of the structure of the utility model in example 2.

[0031] Figure 4 is Figure 2 a schematic diagram of the structure of the hydraulic telescopic device.

[0032] Figure 5 is Figure 2 a schematic diagram of the structure of the connecting screw rod.

[0033] In the figure: drawbar 1, outer extension cantilever structure 2, fixed seat 3, installation end face 31, boss 32, hydraulic telescopic device 4, jack 41, connecting screw rod 42, screw rod hinge support 43, fixed nut 44, adjusting connecting plate 5, connecting plate 51, eccentric sleeve 52, connecting plate hinge support 53, hand-operated hydraulic pump 6, hydraulic pump station 7. DETAILED DESCRIPTION

[0034] The utility model is further explained in detail in combination with the description and specific implementation mode of the accompanying drawings.

[0035] A ship loader drawbar tension auxiliary adjusting device, the auxiliary adjusting device includes: fixed seat 3, hydraulic telescopic device 4 and adjusting connecting plate 5;

[0036] The fixed seat 3 is fixedly arranged at the end of the drawbar 1, the hydraulic telescopic device 4 is fixedly arranged on the fixed seat 3, and the telescopic rod of the hydraulic telescopic device 4 is connected with the outer extension cantilever structure 2;

[0037] One end of the adjusting connecting plate 5 is connected with the end of the drawbar 1, and the other end of the adjusting connecting plate 5 is hingedly connected with the outer extension cantilever structure 2.

[0038] The hydraulic telescopic device 4 adjusts the tension of the drawbar 1 by changing the telescopic amount of the telescopic rod, and the adjusting connecting plate 5 is used to keep the distance between the end of the drawbar 1 and the outer extension cantilever structure 2.

[0039] The hydraulic telescopic device 4 includes a front telescopic device and a rear telescopic device, the front telescopic device and the rear telescopic device are arranged on the two sides of the drawbar 1 respectively, the connection positions of the front telescopic device, the rear telescopic device and the drawbar 1 with the outer extension cantilever structure 2 are located in the same straight line, and the straight line is parallel to the central axis of the outer extension cantilever structure 2.

[0040] The auxiliary adjusting device further comprises two manual hydraulic pumps 6, the hydraulic output ends of the two manual hydraulic pumps 6 are communicated with the oil inlet ends of the hydraulic telescopic devices 4 respectively, and the end of the adjusting connecting plate 5 is hinged with the end of the pull rod 1.

[0041] The auxiliary adjusting device further comprises a hydraulic pump station 7, the hydraulic output end of the hydraulic pump station 7 is communicated with the oil inlet ends of the front telescopic device and the rear telescopic device through synchronization valves respectively, and the end of the adjusting connecting plate 5 is fixedly connected with the end of the pull rod 1 as an integral structure.

[0042] The hydraulic telescopic device 4 comprises a jack 41, a connecting screw rod 42 and a screw rod hinge support 43, the jack 41 is fixedly arranged on the fixed seat 3, a pressure gauge is arranged in series on the oil inlet of the jack 41, the telescopic end of the jack 41 is fixedly connected with one end of the connecting screw rod 42, the other end of the connecting screw rod 42 is hinged with the screw rod hinge support 43, the screw rod hinge support 43 is fixedly arranged on the outer stretching cantilever structure 2, and the connecting screw rod 42 is arranged in parallel with the pull rod 1.

[0043] The adjusting connecting plate 5 comprises a connecting plate 51, an eccentric sleeve 52 and a connecting plate hinge support 53, one end of the connecting plate 51 is hinged with the end of the pull rod 1, the other end of the connecting plate 51 is hinged with the connecting plate hinge support 53 through the eccentric sleeve 52, and the connecting plate hinge support 53 is fixedly arranged on the outer stretching cantilever structure 2.

[0044] The eccentric sleeve 52 is used for keeping the distance between the end of the pull rod 1 and the outer stretching cantilever structure 2 through eccentric rotation.

[0045] The screw rod hinge support 43 is a double-ear plate structure, the fixed seat 3 is a U-shaped fork structure, and the opening direction of the fixed seat 3 is arranged away from the pull rod 1.

[0046] The jack 41 is arranged in the fixed seat 3, one end of the connecting screw rod 42 is an ear ring structure, the connecting screw rod 42 is hinged with the screw rod hinge support 43 through the ear ring structure, and the other end of the connecting screw rod 42 is connected with the telescopic end of the jack 41 through a fixing nut 44.

[0047] The end face of the fixed seat 3, away from the screw rod hinge support 43, is an installation end face 31, the jack 41 is fixed on the installation end face 31, the installation end face 31 is provided with a boss 32 away from the pull rod 1, and the boss 32 is used for preventing the jack 41 from slipping.

[0048] The principle of the utility model is as follows:

[0049] The design comprises the following steps in use:

[0050] S1, install the jack 41 to the installation end face 31, when the jack 41 is installed, through the pin shaft, install the one end of the connecting screw 42 with the ear ring to the screw hinge support 43, at the same time, pass the other end of the connecting screw 42 through the jack 41 and fix through the fixed nut 44, when the connecting screw 42 is installed, connect the jack 41 with the hand hydraulic pump 6 or the hydraulic pump station 7 through the hydraulic oil pipe, at this time, enter S2;

[0051] S2, input the hydraulic oil into the jack 41 through the hand hydraulic pump 6 or the hydraulic pump station 7, the jack 41 drives the connecting screw 42 to move, make the end of the pull rod 1 move to the direction of the outer stretching cantilever structure 2, at this time, the tension of the pull rod 1 increases, observe the pressure of the jack 41 through the pressure gauge on the jack 41, and calculate the tension value of the pull rod through the pressure value displayed on the pressure gauge multiplied by the piston sectional area of the jack, when the tension value of the pull rod reaches the demand, enter S3;

[0052] S3, rotate the eccentric sleeve 52, make the eccentric sleeve 52 respectively close to the connecting plate 51 and the connecting plate hinge support 53, at this time, the distance adjustment between the pull rod 1 and the outer stretching cantilever structure 2 is completed, remove the hydraulic telescopic device 4. Embodiment

[0053] Reference Figure 1The auxiliary adjusting device of the ship loader pull rod tension comprises a fixed seat 3, a hydraulic telescopic device 4 and an adjusting connecting plate 5, the fixed seat 3 is fixedly arranged at the end of the pull rod 1, the hydraulic telescopic device 4 is fixedly arranged on the fixed seat 3, the telescopic rod of the hydraulic telescopic device 4 is connected with the outer extension cantilever structure 2, one end of the adjusting connecting plate 5 is connected with the end of the pull rod 1, the other end of the adjusting connecting plate 5 is hingedly connected with the outer extension cantilever structure 2, the hydraulic telescopic device 4 adjusts the tension of the pull rod 1 by changing the telescopic amount of the telescopic rod, the adjusting connecting plate 5 is used for keeping the distance between the end of the pull rod 1 and the outer extension cantilever structure 2, the hydraulic telescopic device 4 comprises a front telescopic device and a rear telescopic device, the front telescopic device and the rear telescopic device are arranged on the two sides of the pull rod 1 respectively, the front telescopic device, the rear telescopic device and the connecting position of the pull rod 1 and the outer extension cantilever structure 2 are located in the same straight line, and the straight line is parallel to the central axis of the outer extension cantilever structure 2, the auxiliary adjusting device further comprises two manual hydraulic pumps 6, the hydraulic output ends of the two manual hydraulic pumps 6 are respectively communicated with the oil inlet ends of the hydraulic telescopic devices 4, the end of the adjusting connecting plate 5 is hingedly connected with the end of the pull rod 1, the hydraulic telescopic device 4 comprises a jack 41, a connecting screw rod 42 and a screw rod hinged support 43, the jack 41 is fixedly arranged on the fixed seat 3, a pressure gauge is serially arranged on the oil inlet of the jack 41, the telescopic end of the jack 41 is fixedly connected with one end of the connecting screw rod 42, the other end of the connecting screw rod 42 is hingedly connected with the screw rod hinged support 43, the screw rod hinged support 43 is fixedly arranged on the outer extension cantilever structure 2, and the connecting screw rod 42 is arranged in parallel to the pull rod 1, the adjusting connecting plate 5 comprises a connecting plate 51, an eccentric sleeve 52 and a connecting plate hinged support 53, one end of the connecting plate 51 is hingedly connected with the end of the pull rod 1, the other end of the connecting plate 51 is hingedly connected with the connecting plate hinged support 53 through the eccentric sleeve 52, and the connecting plate hinged support 53 is fixedly arranged on the outer extension cantilever structure 2, the eccentric sleeve 52 is used for keeping the distance between the end of the pull rod 1 and the outer extension cantilever structure 2 through eccentric rotation, the screw rod hinged support 43 is a double lug plate structure, the fixed seat 3 is a U-shaped fork structure, the opening direction of the fixed seat 3 is away from the pull rod 1, the jack 41 is arranged in the fixed seat 3, one end of the connecting screw rod 42 is a lug structure, the connecting screw rod 42 is hingedly connected with the screw rod hinged support 43 through the lug structure thereon, and the other end of the connecting screw rod 42 is connected with the telescopic end of the jack 41 through a fixing nut 44. Embodiment

[0054] The auxiliary adjusting device further comprises a hydraulic pump station 7, the hydraulic output ends of the hydraulic pump station 7 are respectively communicated with the oil inlet ends of the front telescopic device and the rear telescopic device through synchronous valves, and the end of the adjusting connecting plate 5 is fixedly connected with the end of the pull rod 1 as an integral structure. Embodiment

[0055] The end face of the fixed seat 3 away from the screw rod hinged seat 43 side is a mounting end face 31, the jack 41 is fixed on the mounting end face 31, the mounting end face 31 is provided with a boss 32 away from the pull rod 1 side, and the boss 32 is used for preventing the jack 41 from slipping.

[0056] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments, but any equivalent modifications or changes made by those skilled in the art according to the disclosed content of the present application shall be included in the protection scope recorded in the claims.

Claims

1. A kind of auxiliary adjusting device of ship loader pull rod tension, it is characterized in that: The auxiliary adjusting device includes fixed seat (3), hydraulic telescopic device (4) and adjusting connecting plate (5); The fixed seat (3) is fixedly arranged at the end of pull rod (1), the hydraulic telescopic device (4) is fixedly arranged on fixed seat (3), and the telescopic rod of the hydraulic telescopic device (4) is connected with outer extension cantilever structure (2); One end of the adjusting connecting plate (5) is connected with the end of pull rod (1), and the other end of the adjusting connecting plate (5) is hinged with outer extension cantilever structure (2); The hydraulic telescopic device (4) adjusts the tension of pull rod (1) by changing the telescopic amount of its telescopic rod, and the adjusting connecting plate (5) is used to keep the distance between the end of pull rod (1) and outer extension cantilever structure (2).

2. The auxiliary adjusting device of ship loader pull rod tension according to claim 1, it is characterized in that: The hydraulic telescopic device (4) includes front telescopic device and rear telescopic device, and the front telescopic device and the rear telescopic device are arranged on the two sides of pull rod (1) respectively, the connection position of the front telescopic device, the rear telescopic device and pull rod (1) and outer extension cantilever structure (2) is in the same straight line, and the straight line is parallel to the central axis of outer extension cantilever structure (2).

3. The auxiliary adjusting device of ship loader pull rod tension according to claim 2, it is characterized in that: The auxiliary adjusting device further includes two manual hydraulic pumps (6), the hydraulic output end of two manual hydraulic pumps (6) is communicated with the oil inlet end of one hydraulic telescopic device (4) respectively, and the end of the adjusting connecting plate (5) is hinged with the end of pull rod (1).

4. The auxiliary adjusting device of ship loader pull rod tension according to claim 2, it is characterized in that: The auxiliary adjusting device further includes hydraulic pump station (7), the hydraulic output end of hydraulic pump station (7) is communicated with the oil inlet end of front telescopic device and rear telescopic device respectively through synchronization valve, and the end of the adjusting connecting plate (5) is fixedly connected with the end of pull rod (1) as an integral structure.

5. The auxiliary adjusting device of ship loader pull rod tension according to any one of claims 2 to 4, it is characterized in that: The hydraulic telescopic device (4) includes jack (41), connecting screw rod (42) and screw rod hinged support (43), the jack (41) is fixedly arranged on fixed seat (3), a pressure gauge is connected in series on the oil inlet of the jack (41), the telescopic end of the jack (41) is fixedly connected with one end of connecting screw rod (42), the other end of connecting screw rod (42) is hinged with screw rod hinged support (43), the screw rod hinged support (43) is fixedly arranged on outer extension cantilever structure (2), and connecting screw rod (42) is arranged parallel to pull rod (1).

6. The auxiliary adjusting device of ship loader pull rod tension according to claim 5, it is characterized in that: The adjusting connecting plate (5) comprises a connecting plate (51), an eccentric sleeve (52) and a connecting plate hinge support (53), one end of the connecting plate (51) is hingedly connected with the end of the pull rod (1), the other end of the connecting plate (51) is hingedly connected with the connecting plate hinge support (53) through the eccentric sleeve (52), and the connecting plate hinge support (53) is fixedly arranged on the outer cantilever structure (2). The eccentric sleeve (52) is used for keeping the distance between the end of the pull rod (1) and the outer cantilever structure (2) through eccentric rotation.

7. The tension auxiliary adjusting device for a pull rod of a ship loader according to claim 6, characterized in that: The screw hinge support (43) is a double-ear plate structure, the fixed seat (3) is a U-shaped fork structure, and the opening direction of the fixed seat (3) is away from the pull rod (1); The jack (41) is arranged in the fixed seat (3), one end of the connecting screw (42) is an ear ring structure, the connecting screw (42) is hingedly connected with the screw hinge support (43) through the ear ring structure thereon, and the other end of the connecting screw (42) is connected with the telescopic end of the jack (41) through a fixing nut (44).

8. The tension auxiliary adjusting device for a pull rod of a ship loader according to claim 7, characterized in that: The end face of the fixed seat (3) away from the screw hinge support (43) is an installation end face (31), the jack (41) is fixed on the installation end face (31), the installation end face (31) is provided with a boss (32) away from the pull rod (1), and the boss (32) is used for preventing the jack (41) from slipping.

Images