A container spreader end beam bottom plate replacement device

Abstract

This utility model discloses a container spreader end beam bottom plate replacement device, relating to the field of port machinery maintenance technology. It includes: a positioning shaft; one end of the positioning shaft is equipped with a positioning block and a pressure plate; a first fixing nut is installed on the outer side of the pressure plate for fixation; a support plate is also installed on the positioning block, with the support plate and pressure plate respectively positioned on both sides of the positioning block; the other end of the positioning shaft is equipped with an inner washer and an outer washer, with a second fixing nut installed on the outer side of the outer washer for fixation; the positioning block passes through a slotted hole in the twist-lock bottom plate of the container spreader, and the pressure plate and support plate cooperate to fix the twist-lock bottom plate; the other end of the positioning shaft passes through a locking pin hole in the end beam load-bearing plate of the container spreader, with the inner and outer washers respectively positioned on both sides of the end beam load-bearing plate and cooperating to fix the end beam load-bearing plate to the positioning shaft. This utility model alleviates the technical problems of large positioning deviation, high operational risk, and low efficiency associated with traditional manual replacement.

Description

Technical Field

[0001] This utility model relates to the field of port machinery maintenance technology, specifically a container spreader end beam bottom plate replacement device. Background Technology

[0002] Currently, container spreader floor plate maintenance faces two major technical bottlenecks. Wear on the slotted holes in the spreader floor plate is unavoidable. After several years of use, if the slotted holes are worn and enlarged, the spreader floor plate can be repaired or replaced through welding. However, due to the irregular wear pattern of the slotted holes and the limited working space, actual welding operations are difficult to achieve ideal results and can only be used as a temporary emergency measure.

[0003] When replacing the base plate, positioning is the first step. However, positioning presents the following difficulties: the welding of the new base plate must simultaneously meet the coaxiality requirement of ≤0.4mm between the pivot pin's waist-shaped hole and the end beam's load-bearing plate's locking pin hole, as well as the positional tolerance of ±0.5mm for the top pin fixing hole. Traditionally, the telescopic beam and end beam of the lifting device are not yet assembled together, and the end beam base plate is welded through positioning. However, traditional manual positioning suffers from technical problems such as large deviations (>5mm), high operational risks, and low efficiency, making it unsuitable for maintenance scenarios of in-service equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a container spreader end beam bottom plate replacement device in order to solve at least one of the above-mentioned technical problems.

[0005] In a first aspect, this utility model provides a container spreader end beam bottom plate replacement device, comprising: a positioning shaft, one end of which is provided with a positioning block and a pressure plate, the outer side of which is provided with a first fixing nut for fixing, and a support plate provided on the positioning block, the support plate and the pressure plate being respectively provided on both sides of the positioning block; the other end of the positioning shaft is provided with an inner washer and an outer washer, the outer side of which is provided with a second fixing nut for fixing; the positioning block passes through a waist-shaped hole in the swivel lock bottom plate of the container spreader, the pressure plate and the support plate cooperating to fix the swivel lock bottom plate; the other end of the positioning shaft passes through a locking pin hole in the end beam load-bearing plate of the container spreader, the inner washer and the outer washer being respectively provided on both sides of the end beam load-bearing plate and cooperating to fix the end beam load-bearing plate on the positioning shaft.

[0006] Furthermore, the positioning shaft is a stepped shaft structure comprising multiple diameter segments, with steps provided between adjacent diameter segments. The positioning block, the inner washer, and the outer washer are respectively fitted onto the stepped shaft structure and respectively secured to different steps.

[0007] Furthermore, the positioning shaft includes a first diameter segment, a second diameter segment, a third diameter segment, and a fourth diameter segment arranged sequentially from top to bottom; wherein, the outer diameter of the first diameter segment is smaller than the outer diameter of the second diameter segment, and the outer diameters of the second diameter segment, the third diameter segment, and the fourth diameter segment decrease sequentially; the positioning block is fitted onto the first diameter segment and engaged on the step between the first diameter segment and the second diameter segment; the pressure plate is fitted onto the first diameter segment and presses against the upper surface of the positioning block; the inner washer is fitted onto the third diameter segment and engaged on the step between the second diameter segment and the third diameter segment; and the outer washer is fitted onto the fourth diameter segment and engaged on the step between the third diameter segment and the fourth diameter segment.

[0008] Furthermore, external threads are provided at both ends of the positioning shaft, and the two ends of the positioning shaft are matched with the first fixing nut and the second fixing nut through the external threads.

[0009] Furthermore, the positioning block is a waist-shaped plate structure that matches the waist-shaped hole of the rotary lock base plate; a through hole is provided in the middle of the positioning block, and bolt grooves are symmetrically provided on both sides of the through hole.

[0010] Furthermore, the support plate is a rectangular plate structure, with a groove provided in the middle of one long side of the rectangular plate structure, and the positioning shaft is inserted into the groove; bolt holes are symmetrically provided at both ends of the support plate, and the support plate is fixed to the bottom of the positioning block by fixing bolts passing through the bolt holes and the bolt groove.

[0011] Furthermore, the pressure plate is a rectangular plate structure, and the length direction of the pressure plate is perpendicular to the length direction of the positioning block.

[0012] Furthermore, there are two support plates, symmetrically arranged on both sides of the positioning shaft.

[0013] Furthermore, both the inner washer and the outer washer are annular washers.

[0014] This utility model provides a container spreader end beam bottom plate replacement device. It uses a positioning block, a pressure plate, and a support plate to form a triple positioning reference. When installing the twistlock bottom plate, it is fixed with bolts in conjunction with the pressure plate and the support plate, ensuring the horizontality of the twistlock bottom plate during installation. The cooperation of inner and outer washers with the end beam load-bearing plate ensures the relative height and horizontality between the end beam load-bearing plate and the twistlock bottom plate, effectively avoiding welding deformation and improving work efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A side view of a container spreader end beam bottom plate replacement device provided in an embodiment of this utility model;

[0017] Figure 2 A cross-sectional view along the AA direction of a container spreader end beam bottom plate replacement device provided in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram illustrating the application of a container spreader end beam bottom plate replacement device provided in this embodiment of the utility model;

[0019] Figure 4 A side view of the application of a container spreader end beam bottom plate replacement device provided in an embodiment of this utility model;

[0020] Figure 5 A schematic diagram of the structure of a positioning shaft provided in an embodiment of this utility model;

[0021] Figure 6 A schematic diagram of the structure of a positioning block provided in an embodiment of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of a support plate provided in an embodiment of the present utility model.

[0023] In the diagram: 1. First fixing nut, 2. Pressure plate, 3. Fixing bolt, 4. Positioning block, 41. Through hole, 42. Bolt groove, 5. Support plate, 51. Groove, 52. Bolt hole, 6. Positioning shaft, 61. First diameter section, 62. Second diameter section, 63. Third diameter section, 64. Fourth diameter section, 65. Step, 7. Inner washer, 8. Outer washer, 9. Second fixing nut, 10. Twisted lock base plate, 11. End beam load-bearing plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Figure 1 This is a side view of a container spreader end beam bottom plate replacement device according to an embodiment of the present utility model. Figure 2 This is a cross-sectional view along the AA direction of a container spreader end beam bottom plate replacement device provided according to an embodiment of this utility model. Figure 1 and Figure 2 As shown, it includes: a positioning shaft 6, a positioning block 4 and a pressure plate 2 at one end of the positioning shaft 6, a first fixing nut 1 on the outside of the pressure plate 2 for fixing, a support plate 5 on the positioning block 4, the support plate 5 and the pressure plate 2 are respectively located on both sides of the positioning block 4; an inner washer 7 and an outer washer 8 at the other end of the positioning shaft 6, a second fixing nut 9 on the outside of the outer washer 8 for fixing.

[0026] Figure 3 This is an application diagram of a container spreader end beam bottom plate replacement device according to an embodiment of the present utility model. Figure 4 This is an application side view of a container spreader end beam bottom plate replacement device provided according to an embodiment of this utility model. Figure 3 and Figure 4 As shown, the positioning block 4 passes through the waist-shaped hole of the swivel lock base plate 10 of the container spreader, and the pressure plate 2 and the support plate 5 cooperate to fix the swivel lock base plate 10.

[0027] In this embodiment of the utility model, the positioning block 4, the pressure plate 2, and the support plate 5 form a triple positioning reference. When installing the new rotary lock base plate 10, it is fixed with the pressure plate 2 and the support plate 5 using the fixing bolts 3 to ensure the levelness of the new rotary lock base plate 10 during installation.

[0028] The other end of the positioning shaft 6 passes through the locking pin hole on the end beam load-bearing plate 11 of the container spreader. The inner washer 7 and the outer washer 8 are respectively set on both sides of the end beam load-bearing plate 11 and cooperate to fix the end beam load-bearing plate 11 on the positioning shaft 6.

[0029] In this embodiment of the utility model, when the base plate is replaced, the positioning shaft 6 ensures that the coaxiality of the locking pin hole on the base plate 10 and the end beam load plate 11 is accurate. The positioning shaft 6 adopts a stepped shaft design, with the large diameter section forming a fit with the locking pin hole of the end beam load plate 11 and the small diameter section forming a floating fit with the positioning block 4.

[0030] like Figure 3 As shown, the pressure plate 2 is a rectangular plate structure, and the length direction of the pressure plate 2 is set perpendicular to the length direction of the positioning block 4.

[0031] Figure 5 This is a structural schematic diagram of a positioning shaft provided according to an embodiment of the present utility model. For example... Figure 5As shown, the positioning shaft 6 is a stepped shaft structure with multiple diameter segments. Steps 65 are set between adjacent diameter segments. The positioning block 4, inner washer 7 and outer washer 8 are respectively fitted onto the stepped shaft structure and respectively locked onto different steps 65.

[0032] Specifically, such as Figure 5 As shown, the positioning shaft 6 includes a first diameter segment 61, a second diameter segment 62, a third diameter segment 63 and a fourth diameter segment 64 arranged sequentially from top to bottom; wherein, the outer diameter of the first diameter segment 61 is smaller than the outer diameter of the second diameter segment 62, and the outer diameters of the second diameter segment 62, the third diameter segment 63 and the fourth diameter segment 64 are arranged in descending order.

[0033] Specifically, the positioning block 4 is fitted onto the first diameter section 61 and locked onto the step 65 between the first diameter section 61 and the second diameter section 62, and the pressure plate 2 is fitted onto the first diameter section 61 and pressed against the upper surface of the positioning block 4.

[0034] The inner washer 7 is fitted on the third diameter section 63 and is secured on the step 65 between the second diameter section 62 and the third diameter section 63. The outer washer 8 is fitted on the fourth diameter section 64 and is secured on the step 65 between the third diameter section 63 and the fourth diameter section 64.

[0035] Specifically, external threads are provided at both ends of the positioning shaft 6, and the two ends of the positioning shaft 6 are matched with the first fixing nut 1 and the second fixing nut 9 through the external threads.

[0036] Figure 6 This is a structural schematic diagram of a positioning block according to an embodiment of the present utility model. Figure 6 As shown, the positioning block 4 is a waist-shaped plate structure that matches the waist-shaped hole of the rotary lock base plate 10; a through hole 41 is provided in the middle of the positioning block 4, and bolt grooves 42 are symmetrically provided on both sides of the through hole 41.

[0037] Figure 7 This is a structural schematic diagram of a support plate according to an embodiment of the present utility model. Figure 7 As shown, the support plate 5 is a rectangular plate structure. A groove 51 is provided in the middle of one long side of the rectangular plate structure, and the positioning shaft 6 is stuck in the groove 51. Bolt holes 52 are symmetrically provided at both ends of the support plate 5. The support plate 5 is fixed to the bottom of the positioning block 4 by fixing bolts 3 passing through the bolt holes 52 and the bolt groove 42.

[0038] Specifically, the support plate 5 and the positioning block 4 are fastened together with fixing bolts 3 using a torque-angle combination method to ensure that the pressure plate 2 is evenly pressed and locked. The pressure plate 2 is placed above the screw-lock base plate 10 at a 90-degree angle and locked together using the first fixing nut 1 to form a whole. The entire device ensures the flatness of the mating surfaces and the perpendicularity between the reference surfaces in the positioning block 4, the pressure plate 2 and the support plate 5.

[0039] Preferably, such as Figure 1 As shown, there are two support plates 5, which are symmetrically arranged on both sides of the positioning shaft 6.

[0040] In this embodiment of the invention, both the inner washer 7 and the outer washer 8 are annular washers. Preferably, the area of ​​the inner washer 7 is larger than the area of ​​the outer washer 8.

[0041] Specifically, the inner washer 7 is installed onto the positioning shaft 6, passing through the locking pin hole on the end beam bearing plate 11 from the bottom of the end beam whose base plate needs to be replaced, and the outer washer 8 and the second fixing nut 9 are installed and locked. At this time, the second diameter section 62 of the positioning shaft 6 and the locking pin hole of the end beam bearing plate 11 adopt a clearance fit based on the hole system to ensure the coaxiality positioning reference accuracy.

[0042] During installation, a level is used to monitor the installation height and levelness in real time. After positioning, welding deformation control measures are implemented, using a segmented welding process combined with symmetrical skip welding to reduce welding deformation. This invention effectively solves the problems existing in the prior art through accurate positioning control, greatly improving the reliability and ease of maintenance of the equipment.

[0043] In this embodiment of the invention, the second diameter section 62 of the positioning shaft 6 and the locking pin hole of the end beam load-bearing plate 11 adopt a clearance fit based on the hole system to ensure the coaxiality positioning datum accuracy; the positioning block 4, pressure plate 2 and support plate 5 are positioned to ensure the flatness of the mating surfaces and the perpendicularity between the datum surfaces. When the new base plate to be replaced is installed on the positioning block 4, the pressure plate 2 and support plate 5 are fixed by the first fixing nut 1 and fixing bolt 3 respectively, and the positioning shaft 6 is used for installation to ensure the height and levelness between the end beam load-bearing plate 11 and the lock base plate 10. The weld seam at the base plate can then be welded in sections, and the welding deformation problem can be effectively avoided after fixing.

[0044] This utility model provides a container spreader end beam bottom plate replacement device, which effectively solves various problems encountered during spreader end beam bottom plate replacement, such as positioning accuracy issues: a positioning shaft system using a hole-based fit controls coaxiality error within 0.4mm; flatness is ensured through the combination of positioning blocks and pressure plates. For example, welding deformation control: an innovative segmented welding process combined with symmetrical skip welding reduces welding deformation. The device provided by this utility model can shorten the average maintenance time from 72 hours to 24 hours, improving work efficiency and saving costs.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A container spreader end beam floor changing device, characterized by, It includes: a positioning shaft, one end of which is provided with a positioning block and a pressure plate, a first fixing nut is provided on the outer side of the pressure plate for fixing, a support plate is also provided on the positioning block, and the support plate and the pressure plate are respectively provided on both sides of the positioning block; the other end of the positioning shaft is provided with an inner washer and an outer washer, and a second fixing nut is provided on the outer side of the outer washer for fixing. The positioning block passes through the waist-shaped hole in the spinlock bottom plate of the container spreader, and the pressure plate and the support plate cooperate to fix the spinlock bottom plate; The other end of the positioning shaft passes through the locking pin hole on the end beam load-bearing plate of the container spreader. The inner washer and the outer washer are respectively set on both sides of the end beam load-bearing plate and cooperate to fix the end beam load-bearing plate on the positioning shaft.

2. The container spreader end beam floor replacement device of claim 1, wherein: The positioning shaft is a stepped shaft structure comprising multiple diameter segments, with steps between adjacent diameter segments. The positioning block, the inner washer, and the outer washer are respectively fitted onto the stepped shaft structure and respectively secured to different steps.

3. The container spreader end beam floor replacement device of claim 2, wherein: The positioning shaft includes a first diameter segment, a second diameter segment, a third diameter segment, and a fourth diameter segment arranged sequentially from top to bottom; wherein, the outer diameter of the first diameter segment is smaller than the outer diameter of the second diameter segment, and the outer diameters of the second diameter segment, the third diameter segment, and the fourth diameter segment decrease sequentially. The positioning block is fitted onto the first diameter segment and locked onto the step between the first diameter segment and the second diameter segment; the pressure plate is fitted onto the first diameter segment and pressed against the upper surface of the positioning block. The inner washer is fitted onto the third diameter segment and secured on the step between the second and third diameter segments, and the outer washer is fitted onto the fourth diameter segment and secured on the step between the third and fourth diameter segments.

4. The container spreader end beam floor replacement device of claim 1, wherein: The two ends of the positioning shaft are respectively provided with external threads, and the two ends of the positioning shaft are matched with the first fixing nut and the second fixing nut through the external threads.

5. The container spreader end beam bottom plate replacement device according to claim 1, characterized in that: The positioning block is a waist-shaped plate structure that matches the waist-shaped hole of the rotary lock base plate; a through hole is provided in the middle of the positioning block, and bolt grooves are symmetrically provided on both sides of the through hole.

6. The container spreader end beam floor replacement device of claim 5, wherein: The support plate is a rectangular plate structure, with a groove in the middle of one long side of the rectangular plate structure, and the positioning shaft is inserted into the groove; bolt holes are symmetrically arranged at both ends of the support plate, and the support plate is fixed to the bottom of the positioning block by fixing bolts passing through the bolt holes and the bolt groove.

7. The container spreader end beam floor replacement device of claim 1, wherein: The pressure plate is a rectangular plate structure, and the length direction of the pressure plate is perpendicular to the length direction of the positioning block.

8. The container spreader end beam floor replacement device of claim 1, wherein: There are two support plates, which are symmetrically arranged on both sides of the positioning shaft.

9. The container spreader end beam floor replacement device of claim 1, wherein: Both the inner washer and the outer washer are annular washers.

Images