A horizontal type dock gate trunnion constraint tool and a mounting method thereof

Abstract

The present application relates to a kind of horizontal type dock gate trunnion restraint tool and its installation method, restraint tool is installed in the width of dock gate both ends, for accommodating and restraining trunnion, including bearing, side plate, panel, web and channel steel;Trunnion is clamped and limited using restraint tool, trunnion is installed in combination with installation method, to prevent trunnion from producing deformation or displacement in the process of welding, in this way, as long as the coaxiality and perpendicularity of two restraint tools are guaranteed before trunnion welding, the coaxiality and perpendicularity of trunnion tightened in restraint tool can be guaranteed, finally ensure that the coaxiality error of welding trunnion is within plus or minus 1 millimeter, and the welding precision is high, while greatly reduce labor intensity.

Description

Technical Field

[0001] This invention relates to the field of dock gate trunnion installation technology, and in particular to a horizontal dock gate trunnion constraint fixture and its installation method. Background Technology

[0002] The tilting dock gate mainly consists of the dock gate body, water-stopping device, trunnion, bearing seat, etc.

[0003] The trunnion, shaped like a spoon, is fixed at both ends of the dock gate body, supporting the entire weight of the dock gate. It opens and closes the dock gate through a clearance fit with the bearing seat. At this time, the precision control of the trunnion installation is particularly important.

[0004] The trunnion welding will be carried out using traditional methods. Traditional welding methods are unconstrained and usually involve measuring coaxiality and perpendicularity while welding. Due to the difficulty in controlling welding shrinkage, deformation and displacement are easily caused, and it is difficult to adjust for deviations from tolerance, which can easily lead to failure. However, rework cannot guarantee success, which requires repeated rework. Ultimately, this results in low trunnion welding accuracy and high labor intensity. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a horizontal dock trunnion constraint fixture and its installation method, which solves the problem that the deformation and displacement of the trunnion cannot be controlled during welding of the trunnion in the prior art, resulting in low welding accuracy and high labor intensity.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: a horizontal dock gate trunnion constraint fixture, installed at both ends of the width of the dock gate, for accommodating and constraining the trunnion, wherein the trunnion includes a ladle structure body, the ladle structure body including a ladle part and a handle part fixed together, wherein the bottom surface of the ladle part is an arc surface and the handle part is a straight strip, the innovation of which is: including

[0007] A bearing includes an annular body with an opening, the annular length of the annular body being L, and the vertical distance between the center of the annular body and the top wall of the opening being less than the vertical distance between the center of the annular body and the bottom wall of the opening, such that the inner diameter of the bearing is greater than L / 2Π.

[0008] Two side plates are arranged vertically and facing each other. Each side plate includes a first horizontal segment, an arc segment, a second horizontal segment, and a vertical segment that are fixed together end to end. The first horizontal segment is placed above the second horizontal segment. The structure of the arc segment is consistent with the bearing structure. The length of the first horizontal segment is less than the length of the second horizontal segment. A circular area for accommodating the trunnion spoon is formed between the arc segments of the two side plates. A horizontal area for accommodating the trunnion handle is formed between the first horizontal segment, the second horizontal segment, and the vertical segment of the two side plates. The circular area and the horizontal area are connected to form an accommodating area for placing the trunnion. The bearing is provided between the two arc segments and the trunnion. The opening of the arc segment and the opening of the bearing face the same direction.

[0009] The panel is installed between the two side panels on one side near the receiving area, and hand holes are provided on both sides of the panel's width.

[0010] Furthermore, the panel includes a first panel installed between the bottoms of the two first horizontal segments, a second panel installed between the bottoms of the two second horizontal segments, and a third panel installed on the inner wall between the two vertical segments, and hand holes are provided on both sides of the width of the first, second, and third panels.

[0011] The first and second panels are also provided with several pairs of screw holes, and bolts are connected to the screw holes.

[0012] Furthermore, stiffening plates are installed between the two side plates;

[0013] The stiffener includes a first stiffener spaced between the two side plates and located on the outside of the bearing, a second stiffener spaced between the two side plates and located on the first horizontal segment and the second horizontal segment, and a third stiffener spaced between the two side plates and located near the first horizontal segment.

[0014] Furthermore, it also includes several channel steels, with the side plate near the dock gate designated as the second side plate and the other side plate designated as the first side plate. The channel steels are spaced apart and vertically arranged on the side of the second side plate away from the first side plate. A notch is also left on the side away from the channel steel at the bottom corner of the opening of the circular body to prevent the trunnion from colliding with the bottom corner of the opening of the circular body and causing damage, thus ensuring that the surface of the trunnion is undamaged.

[0015] An innovative method for installing a horizontal dock gate trunnion constraint fixture includes the following steps:

[0016] S1. Prepare constraint tooling;

[0017] S2. Adopt the method of initial installation followed by precise adjustment to ensure the concentricity and perpendicularity of the arc segments of the two constraint fixtures installed on both sides of the dock gate width;

[0018] S3. Weld the side of the constraint fixture without channel steel to the structures at both ends of the dock gate.

[0019] S4. Set up the boring equipment on the circular constraint fixture and bore the inner wall of the bearing in the constraint fixture so that the inner diameter of the bearing is consistent with the outer diameter of the shank.

[0020] S5. Open the channel steel, push the trunnion into the receiving area and tighten it so that the trunnion handle is parallel to the first horizontal section and the arc surface of the trunnion spoon is in close contact with the inner wall of the bearing.

[0021] S6. After preheating the weld bead, perform trunnion welding and keep the weld bead warm until it cools naturally.

[0022] S7. Remove the constraint fixtures and check that the concentricity and perpendicularity of the trunnions on both sides meet the standards. The trunnion installation is now complete.

[0023] Furthermore, in S5, the trunnion handle is tightened with bolts, the spoon is compacted with a jack, and steel shims are used to pave the contact parts between the bolt and the trunnion handle, and between the jack and the spoon.

[0024] Furthermore, in S2, the initial installation involves first installing the constraint fixtures at approximate positions at both ends of the dock gate width. Then, precise adjustment is achieved through precise positioning using instruments. The two constraint fixtures are then finely adjusted based on the precise positioning to ensure the concentricity and perpendicularity of the arc segments of the two constraint fixtures, ultimately guaranteeing the trunnion welding accuracy.

[0025] The advantages of this invention are:

[0026] 1) In this invention, the trunnion is installed by clamping and limiting the trunnion with a constraint fixture, thereby preventing deformation or displacement of the trunnion during the welding process. In this way, as long as the coaxiality and perpendicularity of the two constraint fixtures are ensured before the trunnion is welded, the coaxiality and perpendicularity of the trunnion tightened in the constraint fixture can be guaranteed. Ultimately, the coaxiality error of the welded trunnion is ensured to be within ±1 mm, resulting in high welding accuracy and greatly reducing labor intensity.

[0027] 2) In this invention, the accommodating area of ​​the constraint fixture includes a circular placement area and a horizontal placement area. The vertical distance between the center of the bearing's annular body and the top wall of its opening is less than the vertical distance between the center of the annular body and the bottom wall of its opening. When the trunnion scoop is placed in the circular placement area, there is still sufficient space above the trunnion in the circular placement area to install a jack and press the trunnion firmly into the bearing, ensuring that the axis of the trunnion will not deform or shift during welding. Several pairs of screw holes are also provided on the first and second panels, and bolts are connected to the screw holes. When the trunnion shank is placed in the horizontal placement area, the verticality of the trunnion shank is ensured by adjusting the bolts up and down, ultimately ensuring the welding accuracy of the trunnion. The trunnion positioning and installation process is simple to operate and reduces the labor intensity of the operator.

[0028] 3) In this invention, the constraint fixture has a panel and stiffening plate between the two side plates, which can improve the structural stability of the constraint fixture. Hand holes are provided on both sides of the width of the first, second and third panels to provide operating space for subsequent welding of trunnions. Channel steel is also provided at intervals and vertically between the dock gate and the side plate near the dock gate to improve the ease of installation between the dock gate and the constraint fixture.

[0029] 4) In this invention, the installation method involves initial installation followed by precise adjustment. First, the constraint fixtures are installed at approximate positions at both ends of the dock gate width. Then, precise positioning is achieved using instruments. After fine adjustment based on the precise positioning, the constraint fixtures are welded onto the structures at both ends of the dock gate. This ensures the concentricity and perpendicularity of the arc segments of the two constraint fixtures, ultimately guaranteeing the trunnion welding accuracy. At the same time, it simplifies the trunnion positioning process and significantly reduces labor intensity. Attached Figure Description

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] Figure 1 This is a front view of a horizontal dock gate trunnion constraint fixture according to the present invention.

[0032] Figure 2 This is a perspective view of a horizontal dock gate trunnion constraint fixture according to the present invention.

[0033] Figure 3 This is a structural diagram of the first side plate of a horizontal dock gate trunnion constraint fixture according to the present invention.

[0034] Figure 4 The first illustration shows the installation method of a horizontal dock gate trunnion constraint fixture according to the present invention.

[0035] Figure 5 Figure 2 illustrates the installation method of a horizontal dock gate trunnion constraint fixture according to the present invention.

[0036] Figure 6Figure 3 illustrates the installation method of a horizontal dock gate trunnion constraint fixture according to the present invention.

[0037] Figure 7 Figure 4 illustrates the installation method of a horizontal dock gate trunnion constraint fixture according to the present invention.

[0038] Figure 8 This is a schematic diagram of the structure after the trunnion of the present invention is installed. Detailed Implementation

[0039] like Figure 1-3 The above-displayed horizontal dock gate trunnion constraint fixture is installed at both ends of the width of the dock gate 16 to accommodate and constrain the trunnion 9. It includes a bearing 1, two side plates, a panel, a stiffening plate, and a channel steel 11.

[0040] The trunnion 9 includes a spoon structure body, which includes a spoon part 91 and a handle part 92 fixed together, and the bottom surface of the spoon part 91 is an arc surface, while the handle part 92 is a straight strip.

[0041] The bearing 1 includes an annular body with an opening. The length of the annular body is L, and the vertical distance between the center of the annular body and the top wall of the opening is less than the vertical distance between the center of the annular body and the bottom wall of the opening, such that the inner diameter of the bearing 1 is greater than L / 2Π.

[0042] The two side plates are a first side plate 5 and a second side plate 6, which are arranged vertically and facing each other. The side plate closer to the dock gate 16 is designated as the second side plate 6, and the other side plate is designated as the first side plate 5.

[0043] The channel steel 11 has a U-shaped structure and is spaced apart and vertically arranged on the side of the second side plate 6 away from the first side plate 5.

[0044] There is a notch on the side away from the channel steel 11 at the bottom corner of the opening of the ring body.

[0045] The first side plate 5 includes a first horizontal section 51, an arc section 52, a second horizontal section 53 and a vertical section 54 that are fixed together end to end, with the first horizontal section 51 positioned above the second horizontal section 53.

[0046] The structure of the arc segment 52 is consistent with that of the bearing 1. The length of the first horizontal segment 51 is less than the length of the second horizontal segment 53. A circular placement area 131 for accommodating the trunnion 9 spoon 91 is formed between the arc segments 52 of the first side plate 5 and the second side plate 6. A horizontal placement area 132 for accommodating the trunnion 9 handle 92 is formed between the first horizontal segment 51, the second horizontal segment 53 and the vertical segment 54 of the first side plate 5 and the second side plate 6.

[0047] The circular placement area 131 and the horizontal placement area 132 are connected to form a receiving area 13 for accommodating the trunnion 9. A bearing 1 is provided between the two arc segments 52 and the trunnion 9, and the opening of the arc segment 52 and the opening of the bearing 1 are aligned.

[0048] The panel is installed between the first side plate 5 and the second side plate 6 on the side near the receiving area 13, and hand holes 14 are provided on both sides of the panel width.

[0049] The panel includes a first panel 2 installed between the bottoms of the two first horizontal sections 51, a second panel 3 installed between the bottoms of the two second horizontal sections 53, and a third panel 4 installed on the inner wall between the two vertical sections 54, with hand holes 14 on both sides of the width of the first, second and third panels.

[0050] The first and second panels are provided with two pairs of screw holes along the length direction. Each pair of screw holes includes two screw holes distributed in the width direction of the first or second panel, and each screw hole is connected to a bolt 12.

[0051] The stiffener is installed between the first side plate 5 and the second side plate 6. The stiffener includes a first stiffener 7 installed at intervals between the first side plate 5 and the second side plate 6 on the outside of the bearing 1, a second stiffener 8 installed at intervals between the first side plate 5 and the second side plate 6 on the first horizontal section 51 and the second horizontal section 53, and a third stiffener 10 installed between the first side plate 5 and the second side plate 6 near the first horizontal section 51.

[0052] A method for installing a horizontal dock gate trunnion constraint fixture includes the following steps:

[0053] S1. Prepare constraint tooling.

[0054] S2. Adopt the method of initial installation followed by precise adjustment: such as... Figure 4 As shown, the initial installation involves first installing the constraint fixtures at approximately the two ends of the 16-width dock gate, as follows: Figure 5 As shown, the subsequent precise adjustment is achieved by using instruments for precise positioning, and then the two constraint fixtures are finely adjusted according to the precise positioning to ensure that the concentricity of the arc segments 52 of the two constraint fixtures installed on both sides of the width of the dock gate 16 is within ±0.5° and that they are kept perpendicular. Then, the side of the constraint fixture without the channel steel 11 is welded to the structure at both ends of the dock gate 16.

[0055] S3, such as Figure 6 As shown, a boring device is set up on the circular constraint fixture and the inner wall of the bearing 1 of the constraint fixture is bored so that the inner diameter of the bearing 1 is consistent with the outer diameter of the shank 92.

[0056] S4, such as Figure 7As shown, the trunnion 9 is pushed into the receiving area 13, and the handle 92 of the trunnion 9 is pressed with the bolt 12. The spoon 91 is pressed with the jack 17, and steel shims are used between the contact parts of the bolt 12 and the handle 92 of the trunnion 9, and between the contact parts of the jack 17 and the spoon 91.

[0057] This makes the handle 92 of the trunnion 9 parallel to the first horizontal section 51, and the arc surface of the spoon part 91 of the trunnion 9 fits tightly against the inner wall of the bearing 1.

[0058] S5. After preheating the weld bead, weld the trunnion 9 and keep the weld bead warm until it cools naturally.

[0059] S6. Remove the constraint fixtures and check that the concentricity and perpendicularity of the trunnions 9 on both sides meet the standards. The installation of the trunnions 9 is now complete. Figure 8 As shown.

[0060] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal dock gate trunnion constraint fixture, installed at both ends of the dock gate's width, for accommodating and constraining the trunnion, wherein the trunnion includes a ladle-shaped structural body, the ladle-shaped structural body comprising a ladle portion and a handle portion fixed together, wherein the bottom surface of the ladle portion is an arc surface and the handle portion is a straight strip, characterized in that: include A bearing includes an annular body with an opening, the annular length of the annular body being L, and the vertical distance between the center of the annular body and the top wall of the opening being less than the vertical distance between the center of the annular body and the bottom wall of the opening, such that the inner diameter of the bearing is greater than L / 2Π. Two side plates are arranged vertically and facing each other. Each side plate includes a first horizontal segment, an arc segment, a second horizontal segment, and a vertical segment that are fixed together end to end. The first horizontal segment is placed above the second horizontal segment. The structure of the arc segment is consistent with the bearing structure, and the opening of the arc segment faces the same direction as the opening of the bearing. The length of the first horizontal segment is less than the length of the second horizontal segment. A circular area for accommodating the trunnion spoon is formed between the arc segments of the two side plates. A horizontal area for accommodating the trunnion handle is formed between the first horizontal segment, the second horizontal segment, and the vertical segment of the two side plates. The circular area and the horizontal area are connected to form a receiving area for accommodating the trunnion. The bearing is provided between the two arc segments and the trunnion. The panel is installed between the two side panels on one side near the receiving area, and hand holes are provided on both sides of the panel's width.

2. The horizontal dock gate trunnion constraint fixture according to claim 1, characterized in that: The panel includes a first panel installed between the bottoms of the two first horizontal sections, a second panel installed between the bottoms of the two second horizontal sections, and a third panel installed on the inner wall between the two vertical sections, with hand holes provided on both sides of the width of the first, second, and third panels. The first and second panels are also provided with several pairs of screw holes, and bolts are connected to the screw holes.

3. The horizontal dock gate trunnion constraint fixture according to claim 1, characterized in that: A stiffening rib is also installed between the two side plates; The stiffener includes a first stiffener spaced between the two side plates and located on the outside of the bearing, a second stiffener spaced between the two side plates and located on the first horizontal segment and the second horizontal segment, and a third stiffener spaced between the two side plates and located near the first horizontal segment.

4. A horizontal dock gate trunnion constraint fixture according to claim 1 or 2, characterized in that: It also includes several channel steels, with the side plate near the dock gate designated as the second side plate and the other side plate designated as the first side plate. The channel steels are spaced apart and vertically arranged on the side of the second side plate away from the first side plate, and a notch is left on the side away from the channel steel at the bottom corner of the opening of the circular body.

5. A method for installing the horizontal dock gate trunnion constraint fixture according to claims 1-4, characterized in that: Includes the following steps: S1. Create the constraint fixture; S2. Adopt the method of initial installation followed by precise adjustment to ensure the concentricity and perpendicularity of the arc segments of the two constraint fixtures installed on both sides of the dock gate width; S3. Weld the side of the constraint fixture without channel steel to the structures at both ends of the dock gate. S4. Boring the inner wall of the bearing in the constraint fixture to make the inner diameter of the bearing consistent with the outer diameter of the shank; S5. Open the channel steel, push the trunnion into the receiving area and tighten it so that the trunnion shank is parallel to the first horizontal section and the arc surface of the trunnion spoon is in close contact with the inner wall of the bearing. S6. After preheating the weld bead, perform trunnion welding and keep the weld bead warm until it cools naturally. S7. Remove the constraint fixtures and check that the concentricity and perpendicularity of the trunnions on both sides meet the standards. The trunnion installation is now complete.

6. The installation method of the horizontal dock gate trunnion constraint fixture according to claim 5, characterized in that: In step S4, the trunnion handle is tightened with bolts, and the spoon is compacted with a jack. Steel shims are used to pave the contact parts between the bolts and the trunnion handle, and between the jack and the spoon.

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