A method for replacing a tie rod

Abstract

The present application provides a method for replacing a tie rod, which is applied to a bridge crane pitching system. The bridge crane pitching system includes a pitching mechanism, a tie rod structure and a front beam. The tie rod structure includes a plurality of tie rods. A tie rod support is provided on the front beam, and the tie rod is rotatably connected to the tie rod support. The method includes: after the pitching mechanism controls the front beam to be raised, a plurality of tie rods are respectively connected using channel steels; after the pitching mechanism controls the front beam to be leveled, the channel steels connecting the plurality of tie rods are removed, and the connection between the tie rods and the tie rod support is released to remove each tie rod; a new tie rod assembly is connected to the tie rod support, the angle is adjusted, and the new tie rod assembly is connected to the front beam using channel steels; after the pitching mechanism controls the front beam to be raised, the channel steels connecting the new tie rod assembly are removed. The present application reduces the construction difficulty and cost and speeds up the construction progress.

Description

Technical Field

[0001] The invention relates to the field of hoisting machinery maintenance and manufacturing, and in particular to a pull rod replacement method. Background Art

[0002] The service life of the shore container crane is not only related to the design, but also closely related to the use environment and frequency of use. As the tie rod assembly that supports the horizontal state of the front beam, it is subjected to heavy loads for a long time, and is affected by external factors such as beam vibration. It needs to be detected for cracking and wear according to the prescribed period. Once it is seriously damaged, it needs to be replaced in time. In addition, after the front extension of the bridge crane front beam is modified and lengthened, if the stress on the tie rod exceeds the allowable stress, the tie rod also needs to be replaced. The commonly used tie rod replacement method in the market is: use a modular car or lay a temporary track, and use a winch to pull the quay crane to the backyard. After moving to the designated position, the quay crane is placed on the temporary track and fixed. Use a large truck crane to complete the tie rod replacement in the air. After the replacement is completed, the quay crane needs to be moved back to its original position and the tooling needs to be removed. The above method requires the preparation of a large number of tooling, such as load-bearing beams, modular cars or temporary cart tracks, winches, water tanks, large truck cranes, etc., which is difficult and costly to construct, delaying the construction progress. Summary of the invention

[0003] In view of this, the present invention provides a tie rod replacement method, which is used to solve the problems of construction difficulty and high cost of the existing tie rod replacement method.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] According to an embodiment of the present invention, a method for replacing a tie rod is applied to a bridge crane luffing system. The bridge crane luffing system includes a luffing mechanism, a tie rod structure and a front beam. The tie rod structure includes a plurality of tie rods. A tie rod support is provided on the front beam. The tie rod is rotatably connected to the tie rod support.

[0006] Methods include:

[0007] After the pitch mechanism controls the front beam to rise, multiple tie rods are connected using channel steel;

[0008] After the pitch mechanism controls the front beam to be leveled, remove the channel steels connecting multiple tie rods, and release the connection between the tie rods and tie rod supports to remove the old tie rod assembly;

[0009] Connect the new tie rod assembly to the tie rod support, and use channel steel to connect the new tie rod assembly to the front beam;

[0010] After the pitch mechanism controls the front beam to rise, remove the channel steel connecting the front beam and the new tie rod assembly.

[0011] In one embodiment of the present application, the tie rod support includes a first tie rod support and a second tie rod support, and the old tie rod assembly includes:

[0012] A first tie rod, one end of which is connected to the first tie rod support, and the other end of which is connected to the front beam;

[0013] A second pull rod, one end of which is connected to the first pull rod support through a first pin shaft, and the other end of which is connected to the connecting plate through a second pin shaft;

[0014] A third pull rod, one end of which is connected to the second pull rod support through a third pin shaft, and the other end of which is connected to the connecting plate through a fourth pin shaft;

[0015] Use channel steel to connect multiple tie rods separately, including:

[0016] Use channel steel to fix and connect the second tie rod and the third tie rod;

[0017] Use channel steel to fix the first tie rod and the second tie rod to fix the old tie rod assembly to the front beam.

[0018] In one embodiment of the present application, after the pitch mechanism controls the front beam to be leveled, the channel steel connecting the multiple tie rods is removed, including:

[0019] After the pitch mechanism controls the front beam to be leveled, the second pin shaft is removed so that the second tie rod is rotatably connected to the first tie rod support;

[0020] The fourth pin is removed to enable the third tie rod to be rotatably connected to the second tie rod support.

[0021] In one embodiment of the present application, after the pitch mechanism controls the front beam to be leveled, the channel steels connecting the plurality of first tie rods are removed, including:

[0022] Remove the channel steel connecting the second pull rod and the third pull rod, and remove the channel steel connecting the first pull rod and the second pull rod.

[0023] In one embodiment of the present application, releasing the connection between the tie rod and the tie rod support to remove the old tie rod assembly includes:

[0024] Remove the first pin shaft and transport the second tie rod out of the construction site;

[0025] Remove the third pin shaft and transport the third tie rod out of the construction site;

[0026] Remove the first tie rod and transport it out of the construction site.

[0027] In one embodiment of the present application, the new tie rod assembly includes a fourth tie rod, a fifth tie rod, and a sixth tie rod;

[0028] Attach the new tie rod assembly to the tie rod support, including:

[0029] Connect the fourth tie rod to the first tie rod support and the front beam respectively;

[0030] Connecting the fifth tie rod to the first tie rod support;

[0031] Connect the sixth tie rod to the second tie rod support.

[0032] In one embodiment of the present application, a new tie rod assembly is connected to a front beam using a channel steel, including:

[0033] The fifth tie rod and the sixth tie rod are fixedly connected by channel steel;

[0034] Use channel steel to securely connect the fourth tie rod and the fifth tie rod to securely connect the new tie rod assembly to the front beam.

[0035] In one embodiment of the present application, after the pitch mechanism controls the front beam to be raised, the channel steel connecting the front beam and the new tie rod assembly is removed, including:

[0036] Connecting the fifth pull rod to the connecting plate via a fifth pin;

[0037] The sixth pull rod is connected to the connecting plate through the sixth pin shaft.

[0038] In one embodiment of the present application, after the pitch mechanism controls the front beam to be raised, the channel steel connecting the front beam and the new tie rod assembly is removed, including:

[0039] Remove the channel steel connecting the fourth tie rod and the fifth tie rod;

[0040] Remove the channel steel connecting the fifth tie rod and the sixth tie rod.

[0041] The above technical solution of the present invention has at least one of the following beneficial effects:

[0042] 1. The tie rod replacement method of the embodiment of the present invention connects multiple tie rods of the old tie rod assembly with each other using channel steel, so that the old tie rod assembly and the front beam are lowered together for replacement, which reduces the construction difficulty and cost and improves the construction efficiency;

[0043] 2. The tie rod replacement method of the embodiment of the present invention does not need to shift the quay crane when replacing the tie rod, thereby reducing the impact on the terminal operation and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A flowchart of a pull rod replacement method according to an embodiment of the present invention;

[0045] Figure 2 It is a schematic diagram of using channel steel to connect the old tie rod assembly when the front beam is raised in the tie rod replacement method of an embodiment of the present invention;

[0046] Figure 3 It is a schematic diagram of removing the old tie rod assembly when the front beam is lowered in the tie rod replacement method according to an embodiment of the present invention;

[0047] Figure 4 It is a schematic diagram of installing a new tie rod assembly when the front beam is lowered in the tie rod replacement method according to an embodiment of the present invention;

[0048] Figure 5 It is a schematic diagram of removing the channel steel connected to the second tie rod when the front beam is raised in the tie rod replacement method according to an embodiment of the present invention.

[0049] : 101, front beam; 102, ladder frame top maintenance platform; 103, sea side upper crossbeam tie rod maintenance platform; 104, first channel steel; 105, second channel steel; 106, first tie rod; 107, second tie rod; 108, third channel steel; 109, fourth channel steel; 110, third tie rod; 113, first pin; 114, second pin; 115, third pin; 116, fourth pin; 202, fourth tie rod; 203, fifth tie rod; 204, sixth tie rod; 205, fifth channel steel; 206, sixth channel steel; 207, seventh channel steel; 208, eighth channel steel; 210, fifth pin; 211, sixth pin. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0051] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0052] The commonly used tie rod replacement method in the market is: use a modular car or lay a temporary track, and use a winch to pull the quay crane to the backyard. After moving to the designated position, the quay crane is placed on the temporary track and fixed. Use a large truck crane to complete the tie rod replacement in the air. After the replacement is completed, the quay crane needs to be moved back to its original position and the tooling needs to be removed. The above method requires the preparation of a large number of tooling, such as load-bearing beams, modular cars or temporary trolley tracks, winches, water tanks, large truck cranes, etc., which makes the construction difficult and costly, delaying the construction progress. In addition, when replacing the tie rod type, since a large truck crane is required to cooperate, the quay crane needs to be moved out of the temporary site as a whole, which takes up a large amount of dock space and affects the normal operation of the dock. In order to solve the above problems, the present invention provides a tie rod replacement method.

[0053] The following first describes in detail the pull rod replacement method according to an embodiment of the present invention with reference to the accompanying drawings.

[0054] like Figure 1 As shown, Figure 1 The present invention is a flowchart of a method for replacing a tie rod according to an embodiment of the present invention. The method is applied to a bridge crane pitch mechanism, which includes a pitch mechanism (not shown), a tie rod structure and a front beam. The front beam includes: a front beam 101 with a pitch structure, and an old tie rod assembly arranged on the front beam 101, the old tie rod assembly includes a plurality of tie rods, and a tie rod support is arranged on the front beam 101, and the tie rod is rotatably connected to the tie rod support; the method includes:

[0055] S100, after the pitch mechanism controls the front beam to be raised, multiple tie rods are connected respectively using channel steel;

[0056] Specifically, in one embodiment of the present application, the tie rod support includes a first tie rod 106 support and a second tie rod 107 support, and the old tie rod assembly includes: a first tie rod 106, a second tie rod 107 and a third tie rod 110. Among them, one end of the first tie rod 106 is connected to the first tie rod 106 support, and the other end is connected to the front beam 101; one end of the second tie rod 107 is connected to the first tie rod 106 support through a first pin 113, and the other end is connected to the connecting plate through a second pin 114; one end of the third tie rod 110 is connected to the second tie rod 107 support through a third pin 115, and the other end is connected to the connecting plate through a fourth pin 116.

[0057] When using channel steels to connect multiple tie rods respectively, construction workers can climb onto the ladder frame top maintenance platform 102 on the quay crane that is horizontal with the ends of the second tie rod 107 and the third tie rod 110 and the sea side upper beam tie rod maintenance platform 103 that is horizontal with the other end of the second tie rod 107, and use the third channel steel 108 and the fourth channel steel 109 to fix the second tie rod 107 and the third tie rod 110 at both ends of the second tie rod 107 and the third tie rod 110 respectively; then the first channel steel 104 and the second channel steel 105 can be used to fix the first tie rod 106 and the second tie rod 107 to fix the old tie rod assembly to the front beam 101.

[0058] Therefore, by fixedly connecting the first tie rod 106 with the second tie rod 107, and the second tie rod 107 with the third tie rod 110, the old tie rod assembly is fixedly connected to the front beam 101. When the pitch mechanism controls the front beam 101 to be lowered, the old tie rod assembly can be lowered together with the front beam 101 without additional fixation, thereby avoiding the second tie rod 107 and the third tie rod 110, which have one end as a free end, from shaking and causing safety hazards.

[0059] S200. After the pitch mechanism controls the front beam to be leveled, remove the channel steels connecting the multiple tie rods, and release the connection between the tie rods and the tie rod supports to remove the old tie rod assembly.

[0060] Specifically, in one embodiment of the present application, after the pitch mechanism controls the front beam 101 to be leveled, the construction workers can climb onto the front beam 101 and remove the second pin 114 to allow the second tie rod 107 to be rotatably connected to the support of the first tie rod 106; and remove the fourth pin 116 to allow the third tie rod 110 to be rotatably connected to the support of the second tie rod 107.

[0061] At this time, since the second tie rod 107 and the third tie rod 110 are in a rigid connection state with the front beam 101 when the front beam 101 is lowered, the second tie rod 107 and the third tie rod 110 will not move during the process of the pitch mechanism controlling the front beam 101 to be leveled, which effectively improves the construction safety. In addition, after the second pin 114 and the fourth pin 116 are removed, the second tie rod 107 and the third tie rod 110 will be rotatably connected to the first tie rod 106 support and the second tie rod 107 support, respectively.

[0062] At this time, the construction personnel can remove the third channel steel 108 and the fourth channel steel 109 connecting the second tie rod 107 and the third tie rod 110, and remove the first channel steel 104 and the second channel steel 105 connecting the first tie rod 106 and the second tie rod 107, so that the first tie rod 106, the second tie rod 107 and the third tie rod 110 can be restored to an active state. Then the construction personnel remove the first pin 113, the third pin 115 and the first tie rod 106 respectively, and hoist the first tie rod 106, the second tie rod 107 and the third tie rod 110 onto a trolley respectively, transport them to the weight by the trolley, and then use a car crane to hoist the old tie rod assembly to the ground to complete the removal of the old tie rod assembly, i.e., the old tie rod. As a result, there is no need to use large-scale hoisting equipment or move the quay crane, which effectively reduces the construction difficulty and cost, speeds up the construction progress, and reduces safety hazards.

[0063] S300. Connect the new tie rod assembly to the tie rod support, and use channel steel to connect the new tie rod assembly to the front beam.

[0064] Specifically, in one embodiment of the present application, the new tie rod assembly includes a fourth tie rod 202, a fifth tie rod 203, and a sixth tie rod 204; when the construction personnel install the new tie rod assembly, the fourth tie rod 202 can be connected to the first tie rod 106 support and the front beam 101 respectively on the front beam 101; at the same time, the fifth tie rod 203 and the sixth tie rod 204 are rotatably connected to the first tie rod 106 support and the second tie rod 107 support respectively through the pin shaft, and the angle of the fifth tie rod 203 and the sixth tie rod 204 is adjusted to the right position. Then, the fifth tie rod 203 and the sixth tie rod 204 are rigidly connected using the fifth channel steel 205 and the sixth channel steel 206; then, the fourth tie rod 202 and the fifth tie rod 203 are rigidly connected using the seventh channel steel 207 and the eighth channel steel 208, so as to fix the new tie rod assembly to the front beam 101. Therefore, when the pitch mechanism controls the front beam 101 to rise, the new tie rod assembly is rigidly connected to the front beam 101 and will not move, thereby effectively improving construction safety.

[0065] S400. After the pitch mechanism controls the front beam to rise, remove the channel steel connecting the front beam and the new tie rod assembly.

[0066] Specifically, in one embodiment of the present application, after the pitch mechanism controls the front beam 101 to be raised, the construction personnel can remove the channel steel connecting the front beam 101 and the new tie rod assembly. First, before the front beam 101 is raised, the construction personnel can connect the fifth tie rod 203 to the connecting plate through the fifth pin 210, and connect the sixth tie rod 204 to the connecting plate through the sixth pin 211. In this way, the fifth tie rod 203 and the sixth tie rod 204 can be installed in place.

[0067] In one embodiment of the present application, after the pitch mechanism controls the front beam 101 to tilt up, the construction personnel can board the ladder frame top maintenance platform 102 on the quay crane that is horizontal with the ends of the second tie rod 107 and the third tie rod 110 and the sea side upper crossbeam tie rod maintenance platform 103 that is horizontal with the other end of the second tie rod 107, and remove the seventh channel steel 207 and the eighth channel steel 208 connecting the fourth tie rod 202 and the fifth tie rod 203; and remove the fifth channel steel 205 and the sixth channel steel 206 connecting the fifth tie rod 203 and the sixth tie rod 204. Thus, the new tie rod assembly, i.e., the installation of the new tie rod assembly, is completed.

[0068] The tie rod replacement method of the embodiment of the present invention connects multiple tie rods of the old tie rod assembly to each other using channel steel, so that the old tie rod assembly and the front beam can be lowered together for replacement, which reduces the construction difficulty and cost and improves the construction efficiency; at the same time, the tie rod replacement method of the embodiment of the present invention does not need to shift the quay crane when replacing the tie rod, which reduces the impact on the terminal operation and shortens the construction period.

[0069] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for replacing a tie rod, applied to a bridge crane luffing system, characterized in that: The bridge crane luffing system comprises a luffing mechanism, a tie rod structure and a front beam, wherein the tie rod structure comprises a plurality of tie rods, a tie rod support is arranged on the front beam, the tie rod is rotatably connected to the tie rod support, and the tie rod support comprises a first tie rod support and a second tie rod support; The method comprises: After the pitch mechanism controls the front beam to tilt up, multiple tie rods are connected respectively using channel steels, and the old tie rod assembly includes a first tie rod, a second tie rod and a third tie rod, one end of the first tie rod is connected to the first tie rod support, and the other end is connected to the front beam, one end of the second tie rod is connected to the first tie rod support through a first pin shaft, and the other end is connected to a connecting plate through a second pin shaft, one end of the third tie rod is connected to the second tie rod support through a third pin shaft, and the other end is connected to a connecting plate through a fourth pin shaft, and the use of channel steels to respectively connect multiple tie rods includes: using channel steels to fix the second tie rod and the third tie rod, and using channel steels to fix the first tie rod and the second tie rod to fix the old tie rod assembly to the front beam; After the pitch mechanism controls the front beam to be leveled, the channel steels connecting the plurality of tie rods are removed, and the connection between the tie rods and the tie rod supports is released to remove the old tie rod assembly; Connect a new tie rod assembly to the tie rod support, the new tie rod assembly includes a fourth tie rod, a fifth tie rod and a sixth tie rod, the fourth tie rod is connected to the first tie rod support and the front beam respectively, the fifth tie rod is connected to the first tie rod support, the sixth tie rod is connected to the second tie rod support, and the new tie rod assembly is connected to the front beam using channel steel, the fifth tie rod and the sixth tie rod are fixedly connected using channel steel, and the fourth tie rod and the fifth tie rod are fixedly connected using channel steel to fix the new tie rod assembly to the front beam; After the pitch mechanism controls the front beam to be raised, the channel steel connecting the front beam and the new tie rod assembly is removed.

2. The tie rod replacement method according to claim 1, characterized in that: After the pitch mechanism controls the front beam to be leveled, the channel steels connecting the plurality of tie rods are removed, including: After the pitch mechanism controls the front beam to be leveled, the second pin shaft is removed so that the second tie rod is rotatably connected to the first tie rod support; The fourth pin is removed to enable the third tie rod to be rotatably connected to the second tie rod support.

3. The tie rod replacement method according to claim 2, characterized in that: After the pitch mechanism controls the front beam to be leveled, the channel steels connecting the plurality of first tie rods are removed, including: The channel steel connecting the second pull rod and the third pull rod is removed, and the channel steel connecting the first pull rod and the second pull rod is removed.

4. The tie rod replacement method according to claim 3, characterized in that: Releasing the connection between the tie rod and the tie rod support to remove the old tie rod assembly includes: Removing the first pin shaft and transporting the second tie rod out of the construction site; Removing the third pin shaft and transporting the third tie rod out of the construction site; The first tie rod is removed and transported out of the construction site.

5. The tie rod replacement method according to claim 4, characterized in that: After the pitch mechanism controls the front beam to be raised, the channel steel connecting the front beam and the new tie rod assembly is removed, including: Connecting the fifth pull rod to the connecting plate via a fifth pin; The sixth pull rod is connected to the connecting plate via a sixth pin.

6. The method for replacing a tie rod according to claim 5, characterized in that: After the pitch mechanism controls the front beam to be raised, the channel steel connecting the front beam and the new tie rod assembly is removed, including: Dismantle the channel steel connecting the fourth tie rod and the fifth tie rod; The channel steel connecting the fifth tie rod and the sixth tie rod is removed.

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