Shoreside container crane and pull rod adjusting device thereof

Abstract

The invention discloses a quayside container crane and a pull rod adjusting device thereof. The pull rod adjusting device comprises a first shaft sleeve connected to the first pull rod, a second shaft sleeve connected to the second pull rod, a first screw rod connected to one end of the first shaft sleeve, a second screw rod connected to the second shaft sleeve, and a force measuring unit arranged between the first screw rod and the second screw rod; the two first nuts are arranged on the inner side and the outer side of the force measuring unit respectively, the second screw rod is connected with two second nuts in a meshed mode, and the two second nuts are arranged on the inner side and the outer side of the force measuring unit respectively; by arranging the force measuring unit, loads of the first pull rods and the second pull rods on the two sides can be directly collected and visually displayed, the load conditions of the two first pull rods and the two second pull rods can be known in real time, and the distance between the first pull rods and the second pull rods on the two sides can be adjusted by analyzing the load values of the two sets of pull rods; and the loads of the pull rods on the two sides are balanced.

Description

Technical Field

[0001] The invention belongs to the technical field of crane tie rods, and in particular relates to a shore container crane and a tie rod adjusting device thereof. Background Art

[0002] Shore container cranes are special cranes for loading and unloading containers between container ships and the front of the wharf. Their loading and unloading capacity and speed directly determine the productivity of terminal operations. As the main equipment for port container loading and unloading, shore container cranes have been constantly updated and replaced in recent years along with the vigorous development of large-scale container transport ships and technological progress. The technological content is getting higher and higher, and they are developing towards large-scale, high-speed, automated and intelligent, as well as high reliability, long life, low energy consumption and environmental protection.

[0003] like Figure 1 As shown, in the prior art, due to the large outreach of the shore container crane, the main beam 100 is heavy, the trolley and the load running on the main beam 100 are heavy, and the main beam needs to be pulled by the front tie rod system to maintain balance. The front tie rod system is generally designed as two groups of left-right symmetrical front tie rods 400, which are connected between the ladder frame 200 and the main beam 100. In order to ensure a certain adjustment amount, the hinge shaft between the front tie rod 400 and the main beam 100 is often designed in the form of an eccentric shaft sleeve 300. In actual use, due to the two front tie rods 40 0 is relatively long, and manufacturing and installation deviations are difficult to guarantee. The adjustment amount of the eccentric sleeve 300 is limited, resulting in the inability to achieve the required adjustment range after installation. At the same time, due to the inconsistent manufacturing and installation deviations of the two groups of front tie rods 400 on the left and right sides, the loads of the two groups of front tie rods 400 are inconsistent, which leads to uneven force and torsion on the left and right sides of the main beam 100, and uneven force on the left and right sides of the hinge 500, which increases the risk of damage, reduces the service life, and causes adverse effects on use. In summary, there is an urgent need for a shore container crane and a tie rod adjustment device thereof. Summary of the invention

[0004] In order to solve part or all of the technical problems existing in the above-mentioned prior art, the present invention provides a shore container crane and a pull rod adjusting device thereof.

[0005] On the one hand, the present invention provides a rod adjustment device for a shore container crane, the shore container crane comprises a main beam, a ladder frame vertically arranged above the main beam, two mutually parallel first rods arranged between the ladder frame and the main beam, and two mutually parallel second rods arranged between the ladder frame and the main beam, the rod adjustment device is arranged between the first rod and the second rod, and the rod adjustment device comprises a first sleeve connected to the first rod, a second sleeve connected to the second rod, a first screw connected to one end of the first sleeve, a second screw connected to the second sleeve, and a force measuring unit arranged between the first screw and the second screw, wherein:

[0006] One end of the first pull rod is hinged on the top of the main beam, and the other end is hinged to the first shaft sleeve through a first hinge shaft. One end of the second pull rod is hinged to one side of the top of the ladder frame, and the other end is hinged to the second shaft sleeve through a second hinge shaft. Two first nuts are meshed and connected to the first screw rod, and the two first nuts are respectively arranged on the inner and outer sides of the force measuring unit. Two second nuts are meshed and connected to the second screw rod, and the two second nuts are respectively arranged on the inner and outer sides of the force measuring unit.

[0007] Furthermore, in the above-mentioned tie rod adjustment device for the shore container crane, two first ear plates parallel to each other are provided at one end of the first tie rod away from the main beam, and the two first ear plates are correspondingly provided with first fixing holes matching the inner hole of the first sleeve, the first sleeve is arranged between the two first ear plates, and the first hinge shaft passes through the first fixing hole to be fixed to the inner hole of the first sleeve.

[0008] Furthermore, in the above-mentioned tie rod adjustment device for the shore container crane, two second ear plates parallel to each other are provided at one end of the second tie rod away from the ladder frame, and the two second ear plates are correspondingly provided with second fixing holes matching the inner hole of the second sleeve, the second sleeve is arranged between the two second ear plates, and the second hinge shaft passes through the second fixing hole to be fixed to the inner hole of the second sleeve.

[0009] Furthermore, in the above-mentioned tie rod adjustment device for the shore container crane, a vibration-damping element is provided between the first nut and the force measuring unit, and between the second nut and the force measuring unit.

[0010] As a specific implementation, in the above-mentioned tie rod adjustment device for a shore container crane, the vibration-damping element is a butterfly spring.

[0011] As a specific implementation, in the above-mentioned tie rod adjustment device for a shore container crane, a strain gauge is provided in the force measuring unit.

[0012] As a specific implementation, in the above-mentioned tie rod adjustment device for a shore container crane, the force measuring unit is connected to a display unit.

[0013] On the other hand, the present invention further provides a shore container crane, wherein the shore container crane comprises the above-mentioned tie rod adjusting device.

[0014] The shore container crane and the tie rod adjustment device thereof of the present invention have the following advantages and positive effects:

[0015] (1) The present invention can directly collect and intuitively display the loads of the first tie rods and the second tie rods on both sides by setting a force measuring unit, so as to understand the load conditions of the two first tie rods and the two second tie rods in real time during the operation of the crane, so as to balance the loads of the tie rods on both sides, make the left and right sides of the main beam bear the force evenly, and make the left and right sides of the hinge bear the force evenly, reduce the risk of damage, and increase the service life of the entire device;

[0016] (2) The present invention has a simple structure and is easy to assemble and disassemble. By adjusting the distance between the first screw and the second screw, the distance between the first sleeve and the second sleeve is adjusted, thereby achieving the effect of adjusting the distance between the first pull rod and the second pull rod. The present invention has the advantages of a large adjustable range and convenient adjustment.

[0017] (3) The present invention arranges elastic elements between the first nut and the first screw rod, and between the second nut and the second screw rod, and arranges vibration-damping elements between the first nut and the force measuring unit, and between the second nut and the force measuring unit. The vibration-damping elements and the elastic elements can well absorb the vibration of the first tie rod and the second tie rod caused by load changes, thereby improving the working performance of the crane and the comfort level of the operator, and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of a front pull rod system in the prior art;

[0020] Figure 2 It is a structural schematic diagram of a pull rod adjustment device for a shore container crane of the present invention;

[0021] Figure 3It is a structural schematic diagram of a force measuring unit in a tie rod adjusting device for a shore container crane of the present invention;

[0022] Figure 4 This is a diagram of actual use of the tie rod adjustment device for a shore container crane according to the present invention.

[0023] Description of reference numerals:

[0024] 1-first tie rod, 11-first bushing, 12-first ear plate, 13-first hinge shaft, 2-second tie rod, 21-second bushing, 22-second ear plate, 23-second hinge shaft, 3-first screw rod, 4-second screw rod, 5-force measuring unit, 6-first nut, 7-second nut, 8-vibration damping element, 100-main beam, 200-trapezoidal frame, 300-eccentric bushing, 400-front tie rod, 500-hinge point. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 4 As shown, the present invention provides a shore container crane and a pull rod adjusting device thereof.

[0027] On the one hand, the present invention discloses a rod adjustment device for a shore container crane, the shore container crane comprises a main beam 100, a ladder frame 200 vertically arranged above the main beam 100, two mutually parallel first rods 1 arranged between the ladder frame 200 and the main beam 100, and two mutually parallel second rods 2 arranged between the ladder frame 200 and the main beam 100. The rod adjustment device is arranged between the first rod 1 and the second rod 2. By sequentially connecting the first rod 1, the device, and the second rod 2, the main beam 100 can be effectively provided with tension to ensure the horizontal state of the main beam 100. The rod adjustment device comprises a rod connected to the first rod 1, the rod adjustment device, and the second rod 2. A first sleeve 11 of the pull rod 1, a second sleeve 21 connected to the second pull rod 2, a first screw 3 connected to one end of the first sleeve 11, a second screw 4 connected to the second sleeve 21, and a force measuring unit 5 arranged between the first screw 3 and the second screw 4. The lengths of the first screw 3 and the second screw 4 can be designed according to the actual required lengths to meet the requirements of the adjustment amount, wherein one end of the first pull rod 1 is hinged to the top of the main beam 100, and the other end is hinged to the first sleeve 11 through the first hinge shaft 13, one end of the second pull rod 2 is hinged to one side of the top of the ladder frame 200, and the other end is hinged to the second sleeve 21 through the second hinge shaft 23, and the first sleeve 11 and the second sleeve 21 are all made of self-lubricating material. Such arrangement ensures good lubrication between the first sleeve 11 and the first hinge shaft 13, the second sleeve 21 and the second hinge shaft 23, improves wear resistance, and reduces friction between the components. The first screw rod 3 is meshed with two first nuts 6, and the two first nuts 6 are respectively arranged on the inner and outer sides of the force measuring unit 5. The second screw rod 4 is meshed with two second nuts 7, and the two second nuts 7 are respectively arranged on the inner and outer sides of the force measuring unit 5. One end of the first screw rod 3 is connected to the first sleeve 11, and the other end passes through one side of the force measuring unit 5. The first screw rod 3 and the force measuring unit 5 are defined by the synchronous tightening of the two first nuts 6. The relative position between them, one end of the second screw rod 4 is connected to the second sleeve 21, and the other end passes through the other side of the force measuring unit 5. The relative position between the second screw rod 4 and the force measuring unit 5 is limited by the synchronous tightening of the two second nuts 7. By adjusting the meshing connection between the first screw rod 3 and the first nut 6, and between the second screw rod 4 and the second nut 7, the spacing between the first screw rod 3 and the second screw rod 4 can be controlled, and then the distance between the first sleeve 11 and the second sleeve 21 can be adjusted to achieve the effect of adjusting the spacing between the first tie rod 1 and the second tie rod 2. As an embodiment, the tie rod adjustment device of the present invention can also be used for similar structures such as bridge grab ship unloaders.

[0028] Furthermore, in the tie rod adjustment device for a shore container crane of the present invention, two first ear plates 12 parallel to each other are provided at one end of the first tie rod 1 away from the main beam 100, and the two first ear plates 12 are correspondingly provided with first fixing holes matching the inner hole of the first sleeve 11, the first sleeve 11 is arranged between the two first ear plates 12, and the first hinge shaft 13 passes through the first fixing hole to be fixed to the inner hole of the first sleeve 11.

[0029] Furthermore, in the tie rod adjustment device for a shore container crane of the present invention, two second ear plates 22 parallel to each other are provided at one end of the second tie rod 2 away from the ladder frame 200, and the two second ear plates 22 are correspondingly provided with second fixing holes matching the inner hole of the second sleeve 21, the second sleeve 21 is arranged between the two second ear plates 22, and the second hinge shaft 23 passes through the second fixing hole and is fixed to the inner hole of the second sleeve 21.

[0030] Furthermore, in the tie rod adjustment device for the shore container crane of the present invention, a vibration-damping element 8 is provided between the first nut 6 and the force measuring unit 5 and between the second nut 7 and the force measuring unit 5. This arrangement is so that the vibration-damping element 8 can well absorb the vibration of the first tie rod 1 and the second tie rod 2 caused by load changes, thereby improving the working performance of the crane and improving the comfort level of the operator.

[0031] As a specific embodiment, in the tie rod adjustment device for a shore container crane of the present invention, elastic elements (not shown in the figure) are further arranged between the first screw rod 3 and the first nut 6, and between the second screw rod 4 and the second nut 7. This arrangement is to allow the elastic elements to well absorb the vibration of the first tie rod 1 and the second tie rod 2 caused by load changes, thereby improving the working performance of the crane and the comfort level of the operator.

[0032] As a specific implementation, in the tie rod adjustment device for a shore container crane of the present invention, the vibration-damping element 8 is a butterfly spring. Of course, the vibration-damping element 8 can also adopt other structures as long as it meets its vibration-damping effect, which is not limited here.

[0033] As a specific embodiment, in the tie rod adjustment device for a shore container crane of the present invention, a strain gauge (not shown in the figure) is arranged in the force measuring unit 5. Of course, other stress sensing modules can also be arranged in the force measuring unit 5, as long as the detection of the loads of the first tie rod 1 and the second tie rod 2 is satisfied. Through the force measuring unit 5, the load values ​​of the first tie rod 1 and the second tie rod 2 on both sides can be collected respectively, and the distance between the first tie rod 1 and the second tie rod 2 on both sides can be adjusted according to the load values, so that the loads of the tie rods on both sides are balanced, and the left and right sides of the main beam 100 are evenly stressed, thereby reducing the risk of damage and improving the overall service life of the device.

[0034] As a specific embodiment, in the tie rod adjustment device for a shore container crane of the present invention, the force measuring unit 5 is connected to a display unit (not shown in the figure). With such a configuration, the load of the tie rod can be displayed in real time through the display unit, so that the operator can collect load data more intuitively.

[0035] The working principle of the pull rod adjustment device for a shore container crane of the present invention is as follows:

[0036] By adjusting the meshing connection between the first screw 3 and the first nut 6, and between the second screw 4 and the second nut 7, the effect of adjusting the distance between the first tie rod 1 and the second tie rod 2 can be achieved. Since the positions of the force measuring unit 5 and the first screw 3 and the second screw 4 are relatively fixed, the load values ​​of the first tie rod 1 and the second tie rod 2 can be collected in real time by the force measuring unit 5. By analyzing the load values ​​of the two groups of tie rods, the distance between the first tie rod 1 and the second tie rod 2 on both sides can be adjusted, so that the left and right sides of the main beam 100 are evenly stressed, and the left and right sides of the hinge are evenly stressed.

[0037] On the other hand, the present invention further provides a shore container crane, wherein the shore container crane comprises the above-mentioned tie rod adjusting device.

[0038] In summary, compared with the prior art, the shore container crane and the tie rod adjustment device of the present invention have the following advantages and positive effects:

[0039] (1) The present invention can directly collect and intuitively display the loads of the first tie rods 1 and the second tie rods 2 on both sides by setting a force measuring unit 5, so as to understand the load conditions of the two first tie rods 1 and the two second tie rods 2 in real time during the operation of the crane, so as to balance the loads of the tie rods on both sides, make the left and right sides of the main beam 100 and the left and right sides of the hinge 500 evenly stressed, reduce the risk of damage, and increase the service life of the entire device;

[0040] (2) The present invention has a simple structure and is easy to assemble and disassemble. By adjusting the distance between the first screw 3 and the second screw 4, the distance between the first sleeve 11 and the second sleeve 21 is adjusted, thereby achieving the effect of adjusting the distance between the first tie rod 1 and the second tie rod 2. The present invention has the advantages of a large adjustable range and convenient adjustment.

[0041] (3) In the present invention, elastic elements are arranged between the first nut 6 and the first screw rod 3, and between the second nut 7 and the second screw rod 4. Vibration-damping elements 8 are arranged between the first nut 6 and the force measuring unit 5, and between the second nut 7 and the force measuring unit 5. The vibration-damping elements 8 and the elastic elements can well absorb the vibration of the first tie rod 1 and the second tie rod 2 caused by load changes, thereby improving the working performance of the crane and the comfort level of the operator, and having good practicality.

[0042] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants 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 also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rod adjustment device for a shore container crane, the shore container crane comprising a main beam, a ladder frame vertically arranged above the main beam, two mutually parallel first rods arranged between the ladder frame and the main beam, and two mutually parallel second rods arranged between the ladder frame and the main beam, the rod adjustment device being arranged between the first rod and the second rod, characterized in that: The tie rod adjustment device comprises a first sleeve connected to the first tie rod, a second sleeve connected to the second tie rod, a first screw connected to one end of the first sleeve, a second screw connected to the second sleeve, and a force measuring unit disposed between the first screw and the second screw, wherein: One end of the first pull rod is hinged on the top of the main beam, and the other end is hinged to the first shaft sleeve through a first hinge shaft. One end of the second pull rod is hinged to one side of the top of the ladder frame, and the other end is hinged to the second shaft sleeve through a second hinge shaft. Two first nuts are meshed and connected to the first screw rod, and the two first nuts are respectively arranged on the inner and outer sides of the force measuring unit. Two second nuts are meshed and connected to the second screw rod, and the two second nuts are respectively arranged on the inner and outer sides of the force measuring unit.

2. The pull rod adjustment device for a shore container crane according to claim 1, characterized in that: The first pull rod is provided with two first ear plates parallel to each other at one end away from the main beam, and the two first ear plates are respectively provided with first fixing holes matching the inner hole of the first sleeve. The first sleeve is arranged between the two first ear plates, and the first hinge shaft passes through the first fixing hole to be fixed to the inner hole of the first sleeve.

3. The pull rod adjustment device for a shore container crane according to claim 1, characterized in that: The second pull rod is provided with two second ear plates parallel to each other at one end away from the ladder frame, and the two second ear plates are respectively provided with second fixing holes matching the inner hole of the second sleeve, the second sleeve is arranged between the two second ear plates, and the second hinge shaft passes through the second fixing hole to be fixed to the inner hole of the second sleeve.

4. The pull rod adjustment device for a shore container crane according to claim 1, characterized in that: A vibration-damping element is disposed between the first nut and the force measuring unit, and between the second nut and the force measuring unit.

5. The pull rod adjustment device for a shore container crane according to claim 1, characterized in that: The vibration reduction element is a butterfly spring.

6. The pull rod adjustment device for a shore container crane according to claim 1, characterized in that: A strain gauge is arranged in the force measuring unit.

7. The pull rod adjustment device for a shore container crane according to claim 1, characterized in that: The force measuring unit is connected with a display unit.

8. A shore container crane, characterized in that: The shore container crane comprises the tie rod adjustment device according to any one of claims 1-7.

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