Tool for replacing tire of RTG

Abstract

The utility model discloses a tool for RTG tire replacement, which comprises a jacking support and a jacking mechanism, the jacking support comprises a U-shaped jacking frame body, a support plate, a connecting plate and an inner side support plate, the two ends of the U-shaped jacking frame body are arranged upwards, the two ends of the upper part of the jacking frame body are respectively connected with one end of the support plate, and the other end of the jacking frame body is connected with the inner side support plate. The other ends of the supporting plates are arranged away from each other, connecting plates are symmetrically and vertically arranged at the upper ends of the supporting plates, inner side supporting plates are symmetrically and vertically arranged at the positions, located between the connecting plates, of the upper ends of the supporting plates, and walking supporting plates on the same side of the RTG can be inserted and limited between the connecting plates and the inner side supporting plates on the same supporting plate; the jacking mechanism is used for being in butt joint with the lower end of the jacking frame body and jacking the jacking frame body. The device can avoid the problem of interference with other structures of the RTG, and the reliability of connection between the device and the walking supporting plate can be guaranteed through the arrangement of the connecting plate on the supporting plate and the inner side supporting plate, so that the jacking requirement is met.

Description

Technical Field

[0001] The utility model relates to a tire changing device, in particular to a tooling for RTG tire changing. Background Art

[0002] Rubber-tyred container gantry cranes, or RTGs for short, are the main working equipment at container terminals. The traveling mechanism of RTGs is tire-type, and their tires often need to be inspected and repaired. Currently, the existing automated RTGs have built-in hydraulic systems, but due to the high cost of hydraulic systems and high maintenance costs, they are difficult to meet market demand; and RTGs also need to be regularly inspected or repaired with tires replaced.

[0003] Therefore, at present, for conventional RTGs without hydraulic systems, the following two jacking methods are mainly used: 1. Lift the active wheel bearing seat or the driven wheel seat of each set of trolleys through conventional hydraulic devices; 2. Lift the lower surface of the balance beam box of each set of trolleys or the extended jacking seat through conventional hydraulic devices. However, the above methods have the following problems: 1. Lifting the wheel bearing seat will cause the bearing seat to deform, squeeze the bearing, and may cause bearing damage; 2. When lifting the trolley balance beam or the extended jacking seat, only the lifting part of the lower part of the balance beam is stressed, and the force is uneven, which may cause deformation of the balance beam structure and affect the structural strength. Combined with the structure of the RTG itself, the walking support plate on it can be used as a support to prop it up, but conventional hydraulic devices cannot effectively support the walking support plate.

[0004] Therefore, there is an urgent need for a tool for replacing tires of RTGs to solve the problem of inconvenience in jacking when replacing tires of RTGs without a hydraulic system. Utility Model Content

[0005] The utility model aims at the deficiencies in the prior art and provides a tool for replacing tires of an RTG, so as to solve the problem of inconvenience in lifting when replacing tires of an RTG without a hydraulic system.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An RTG tire replacement tooling, characterized in that: it includes a jacking support and a jacking mechanism. The jacking support includes a jacking frame body in a "U" shape, a support plate, a connecting plate and an inner support plate. The two ends of the "U" shape of the jacking frame body are upward. The two ends of the upper part of the jacking frame body are respectively connected to one end of a support plate, and the other ends of the two support plates are arranged away from each other. Symmetrically and vertically provided with a connecting plate at the upper ends of the two support plates, and symmetrically and vertically provided with an inner support plate between the two support plates at the upper ends of the two support plates. The walking support plate on the same side of the RTG can be inserted and limited between the connecting plate and the inner support plate on the same support plate. The jacking mechanism is used to dock with the lower end of the jacking frame body and perform jacking.

[0008] To optimize the above technical solution, the specific measures taken also include:

[0009] Further, a triangular stiffening rib plate is provided on the side of the connecting plate away from the inner support plate, and the stiffening rib plate is respectively connected to the upper end of the support plate and the side wall of the connecting plate.

[0010] Further, several vertical rows of threaded holes are provided on the connecting plate, and an adjusting bolt is threadedly connected to each threaded hole. One end of each adjusting bolt facing the inner support plate is connected with a positioning block, and the positioning block is used to press against the side wall of the walking support plate or the side wall of the saddle beam structure of the RTG.

[0011] Further, a nut is provided at each threaded hole, and the adjusting bolt correspondingly passes through the nut and the corresponding threaded hole in a threaded manner.

[0012] Further, the height of the inner support plate itself is not higher than the height of the walking support plate itself.

[0013] Further, the height of the connecting plate itself is not lower than the height of the walking support plate itself.

[0014] Further, pads for docking the jacking mechanism are respectively provided at the lower ends of the jacking frame body.

[0015] Further, the jacking mechanism includes a jack and a jacking base. A top seat is provided at the upper end of the jacking base, and a jack is installed on the top seat. The jack is used to abut against the lower end of the jacking frame body.

[0016] Further, the bottom end of the jacking base is in the shape of a rectangular plate, and a walking wheel is provided at each of the four ends of the bottom end. An installation plate is provided at the upper end of each walking wheel, and the installation plate is respectively connected to the side of the rectangular plate-shaped bottom end through a hinge. The walking wheel can be rotated to be above the bottom end through the hinge connected to the installation plate.

[0017] Furthermore, threaded connection holes are provided on the mounting plate, and corresponding connection holes are provided at the bottom end of the jacking base. The threaded connection holes on the mounting plate and the corresponding connection holes at the bottom end of the jacking base can be connected by fastening bolts.

[0018] The beneficial effects of the present utility model are as follows:

[0019] By setting the "U"-shaped jacking frame body in the device of the present utility model, and the structure that one end of the support plate is connected to the jacking frame body and the other end is far away from each other, the interference problem with other structures of the RTG itself is avoided, and the traveling support plate on the RTG can be effectively butt-jointed and supported; through the setting of the connecting plate and the inner support plate on the support plate, the reliability of the connection between the device and the traveling support plate can be ensured to meet the jacking requirements; through the non-fixed connection method between the jacking mechanism and the jacking bracket, it is convenient for the device to be respectively stored, moved, disassembled and assembled for use.

[0020] When the present utility model is used, there is no need to consider the parking position of the RTG trolley, and no interference will occur. The saddle beam structure is directly stressed and the stress is uniform, and the stressed part is reasonable, avoiding situations such as bearing damage or balance beam structure deformation that may be caused by the conventional jacking method. The installation operation is simple, the cost is low, and the tire replacement speed is fast and the time is short. The jacking base is equipped with handrails and walking wheels, which is convenient for workers to move the jacking base to the working location. The jacking bracket clamps the traveling support plates on both sides of the saddle beam through adjusting bolts and positioning blocks, and the connection method is simple and effective, ensuring the stability during the jacking process. Description of the Drawings

[0021] Figure 1 It is a schematic use diagram of a tool for replacing tires of an RTG proposed by the present utility model;

[0022] Figure 2 It is a schematic structural diagram of a jacking bracket of a tool for replacing tires of an RTG proposed by the present utility model;

[0023] Figure 3 It is a side view of the structure of a jacking bracket of a tool for replacing tires of an RTG proposed by the present utility model;

[0024] Figure 4 It is a schematic structural diagram of a jacking base of a tool for replacing tires of an RTG proposed by the present utility model;

[0025] Figure 5 It is a schematic storage diagram of the walking wheels of a jacking base of a tool for replacing tires of an RTG proposed by the present utility model;

[0026] Figure 6 It is a schematic use diagram of a jacking bracket of a tool for replacing tires of an RTG proposed by the present utility model;

[0027] Figure 7 Partial enlarged view of the lifting support of a tooling for replacing tires of an RTG proposed by the present utility model;

[0028] Figure 8 Schematic illustration of the situation of the method for replacing tires of an RTG Figure 1 ;

[0029] Fig. 9 Schematic illustration of the situation of the method for replacing tires of an RTG Figure 2 ;

[0030] Fig.10 Schematic illustration of the situation of the method for replacing tires of an RTG Figure 3 .

[0031] Reference numerals: 1. Saddle beam structure, 2. Gantry traveling mechanism, 3. Lifting support, 31. Lifting frame body, 32. Connecting plate, 33. Nut, 34. Spacer block, 35. Adjusting bolt, 36. Positioning block, 37. Inner support plate, 4. Jack, 5. Lifting base, 51. Mounting plate, 52. Handrail, 53. Traveling wheel, 54. Hinge, 55. Fastening bolt, 56. Top seat, 6. Traveling support plate, 7. Connecting bolt, 8. Steering hinge point, 9. Fixed plate, 10. Copper sleeve, 11. Hinge shaft, 12. Shaft clamping plate. Specific embodiments

[0032] The present utility model will be described in detail below with reference to the accompanying drawings.

[0033] As shown in the attached Figure 1 and attached Figure 2 figures, a tooling for replacing tires of an RTG according to an embodiment of the present utility model includes a lifting support 3 and a lifting mechanism. The lifting support 3 includes a lifting frame body 31 in a "U" shape, a support plate, a connecting plate 32, and an inner support plate 37. The two separated and symmetric ends of the "U" shaped structure of the lifting frame body 31 are arranged upward. The two ends of the upper part of the lifting frame body 31 are horizontally connected to one end of a support plate respectively, and the other ends of the two support plates are arranged away from each other. One connecting plate 32 is vertically provided symmetrically at the upper ends of the two support plates respectively. One inner support plate 37 is vertically provided symmetrically between the two connecting plates 32 at the upper ends of the two support plates. The traveling support plate 6 on the same side as the RTG can be inserted and limited between the connecting plate 32 and the inner support plate 37 on the same support plate. The inner support plate 37 is closely attached to the inner side of the traveling support plate 6. The lifting mechanism is used to butt against the lower end of the lifting frame body 31 and lift the whole lifting support 3.

[0034] The device of the utility model, through the setting of the "U"-shaped lifting frame body 31 and the structural setting that one end of the support plate is connected to the lifting frame body 31 and the other end is far away from each other, avoids the interference problem with other structures of the RTG itself, and can effectively dock and support the traveling support plate 6 on the RTG; through the setting of the connecting plate 32 and the inner support plate 37 on the support plate, the reliability of the connection between the device and the traveling support plate 6 can be ensured to meet the lifting requirements; through the non-fixed connection method between the lifting mechanism and the lifting bracket 3, it is convenient for the device to be respectively stored, moved, disassembled and assembled for use.

[0035] Among them, a triangular stiffening rib plate is provided on the side of the connecting plate 32 away from the inner support plate 37, and the stiffening rib plate is respectively connected to the upper end of the support plate and the side wall of the connecting plate 32. In this way, the reliability of the connection between the support plate and the connecting plate 32 is increased through the triangular stiffening rib plate, and the structural strength of the device is increased.

[0036] As shown in the Figure 7 accompanying drawings, in another specific embodiment, several rows of threaded holes arranged vertically are provided on the connecting plate 32, and each threaded hole is respectively threadedly connected with an adjusting bolt 35. One end of the adjusting bolt 35 facing the inner support plate 37 is connected with a positioning block 36, and the positioning block 36 is used to press against the side wall of the traveling support plate 6 or the side wall of the saddle beam structure 1 of the RTG. In this way, during use, the distance between the positioning block 36 and the side wall of the traveling support plate 6 or the side wall of the saddle beam structure 1 of the RTG can be adjusted by rotating the adjusting bolt 35, so as to ensure the clamping and fixing of the traveling support plate 6 through the positioning block 36 and the inner support plate 37.

[0037] In this embodiment, two rows of vertical threaded holes can be set as required and are respectively arranged on the front and back sides of the above-mentioned triangular stiffening rib plate. In this way, while ensuring the structural strength, the adjustability of the structure can be increased.

[0038] Among them, in a further embodiment, a nut 33 is provided at each threaded hole, and the adjusting bolt 35 correspondingly passes through the nut 33 and the corresponding threaded hole in a threaded manner. In this way, through the cooperation of the nut 33 and the threaded hole, the adjusting bolt 35 can be effectively supported, and the stability and support strength of the structure are increased.

[0039] In another specific embodiment, the height of the inner support plate 37 itself is not higher than the height of the traveling support plate 6 itself. In this way, while effectively and closely supporting the traveling support plate 6, interference with other structures of the RTG can be avoided.

[0040] In another specific embodiment, the height of the connecting plate 32 itself is not lower than or higher than the height of the walking support plate 6 itself. In this way, the connecting plate 32 with a height not lower than that of the walking support plate 6 itself can be used to simultaneously limit the walking support plate 6 and provide synchronous auxiliary limitation to the side wall of the saddle beam structure 1 of the RTG, thereby increasing the stability and reliability of the device during use.

[0041] In another specific embodiment, stiffening ribs are respectively provided at the corners of the "U"-shaped jacking frame body 31. In this way, the strength of the structure of the jacking frame body 31 itself can be increased.

[0042] As shown in the Figure 3 accompanying drawings, in another specific embodiment, cushion blocks 34 for docking the jacking mechanism are respectively provided at the lower ends of the jacking frame body 31. In this embodiment, three cushion blocks 34 are provided, which are respectively located directly below the two vertical structures of the "U"-shaped jacking frame body 31 and at the middle of the lower end of the "U"-shaped jacking frame body 31. In this way, it is convenient for the jacking mechanism to be positioned and docked during use, while increasing the frictional force of contact, thereby ensuring the stability and safety of use.

[0043] In another specific embodiment, the jacking mechanism includes a jack 4 and a jacking base 5. A top seat 56 is provided at the upper end of the jacking base 5, and a jack 4 is installed on the top seat 56. The jack 4 is used to abut against the lower end of the jacking frame body 31. In this embodiment, several jacking mechanisms can be used as needed during use. Each jacking mechanism is provided with a jacking base 5 and a jack 4 thereon. During use, by adjusting the position of the jacking base 5, the jack 4 is adjusted to be docked with the above-mentioned cushion block 34.

[0044] As shown in the Figure 4 accompanying drawings, among them, in a specific embodiment, the bottom plate of the jacking base 5 can be in the shape of a rectangular plate, and a walking wheel 53 is respectively provided at the four ends of the bottom end. An installation plate 51 is provided at the upper end of each walking wheel 53. The installation plate 51 is respectively connected to the side edge of the rectangular plate-shaped bottom end through a hinge 54. The walking wheel 53 can be rotated to be located above the bottom end through the hinge 54 connected to the installation plate 51. In this way, during use, the walking wheel 53 can be rotated to the lower end of the jacking base 5 as needed to move the entire jacking base 5. When reaching the designated position, the walking wheel 53 is rotated to the upper end or side of the bottom plate of the jacking base 5, so that the walking wheel 53 does not participate in the support of the jacking bracket 3, thereby realizing the convenient movement of the jacking base 5 and avoiding affecting the stability of the support during use. During use, since the installation plate 51 will abut against the end face of the bottom end of the jacking base 5, it will not affect the movement and use of the walking wheel 53.

[0045] In a further embodiment, a threaded connection hole is provided on the mounting plate, and a connection hole is provided at the bottom end of the lifting base 5. When the mounting plate is located below the bottom end of the lifting base 5, the threaded connection hole of the mounting plate and the connection hole corresponding to the bottom end of the lifting base 5 can be connected and reinforced by a fastening bolt 55. In this way, when in use, the stability of the travel wheel 53 when supporting movement can be increased by fastening the bolt 55.

[0046] A specific implementation of the device of the utility model is that two rows of four nuts 33, totaling eight nuts, can be welded on each of the two connecting plates 32 of the jacking bracket 3. The side walls of the connecting plates 32 are respectively connected by two triangular ribs to increase the structural strength. There are three pads 34 under the bracket, that is, there are three jacking positions for the jacks 4. The main body of the jacking base 5 is spliced ​​by steel plates, and handrails 52 can be provided on both sides as required. Four detachable and rotatable walking wheels 53 connected by fastening bolts 55 and hinges 54 are installed at the bottom to facilitate the transfer and movement of the jacking base 5 without affecting the stability during support. Among them, the positioning block 36 on the jacking bracket 3 has an internal thread. The adjusting bolt 35 is passed through the nut 33 and the threaded hole on the connecting plate 32 and then connected to the positioning block 36. The horizontal movement of the positioning block 36 can be controlled by rotating the adjusting bolt 35, and it is adjusted to the positioning block 36 and the walking support plate 6 to tighten, so as to ensure the stability of the jacking bracket 3 during jacking. The friction between the positioning block 36 and the walking support plate 6, as well as the effect of the support plate, enables the lifting bracket 3 to be clamped on both sides of the saddle beam structure 1 and will not fall off.

[0047] The working method of the utility model is as follows:

[0048] 1. As attached Figure 6 As shown, two lifting brackets 3 are respectively installed at the two balance beam hinge points of the saddle beam structure 1 on the side of the tire to be replaced through positioning blocks 36 and adjusting bolts 35, so that the lifting brackets 3 clamp and fix the corresponding walking support plates 6 respectively;

[0049] 2. Move the four lifting bases 5 to the bottom of the corresponding pads 34 of the installed lifting brackets 3, remove the fastening bolts 55 of the running wheels 53, and rotate the running wheels 53 to the position as shown in the attached figure through the hinges 54. Figure 5 The position shown is fixed;

[0050] 3. Use the jack 4 at the center of the jacking base 5 to place the jack 4 directly below the pads 34 on the left and right sides of the jacking bracket 3, as shown in the attached figure. Figure 1 As shown;

[0051] 4. Lift the lifting brackets 3 of the two sets of trolleys at the same time to make the tires suspended off the ground;

[0052] 5. Remove the flange connection bolts 7 between the connecting beam and the active frame assembly, and between the connecting beam and the driven frame assembly. The existence of the steering hinge 8 allows the frame assembly and the balance beam to remain connected. The frame will not fall or move left or right, but can rotate around the hinge axis. Figure 8 and attached Fig. 9 As shown;

[0053] 6. Press Attachment Fig.10 , rotating walking active frame and driven frame assembly;

[0054] 7. Remove and replace tires;

[0055] 8. Rotate the active traveling frame and the driven traveling frame assembly to the initial state, and tighten the flange connection bolts 7.

[0056] 9. Retract the jack 4 to return to the initial state, remove the jack 4 and the lifting base 5, rotate the walking wheel 53 of the lifting base 5 to the original position, tighten the fastening bolts 55, and move it; remove the lifting bracket 3, loosen the positioning block 36, and the RTG quick tire replacement is completed.

[0057] The utility model is suitable for RTG without hydraulic or electric lifting, RTG without reversing push rod and lifting, RTG without walking steering device or RTG with reversing push rod and lifting. And it has the following advantages:

[0058] 1. Four jacks 4 with a weight greater than 35 tons can be placed on one side of the jacking of the utility model. The jacking force is large, and there is no need to consider the parking position of the RTG trolley, and no interference will occur. Under the current conditions: the total weight QG of the RTG is 150 tons, and the total weight of the trolley assembly (including the hanger and the sling) is QC, which is 38 tons. Assuming that the trolley is parked on the side where the tire needs to be replaced, the force on a single jacking bracket is FN = ((QG-QC) / 2+QC) / 2 = 47 tons, which is decomposed to the jacking points on both sides of the jacking bracket 3. FN / 2 = 23.5 tons. At this time, a jack 4 with a jacking force greater than 23.5×1.5 = 35.25 tons is selected.

[0059] 2. If the trolley is on the opposite side of the tire that needs to be replaced, only two jacks 4 are needed to support the middle pads 34 of the two jacking brackets 3 to complete the tire replacement. Under this condition: the total weight QG of the RTG is 150 tons, the total weight of the trolley assembly (including the hanger and the sling) is QC, which is 38 tons. Assuming that the trolley is parked on the side where the tire needs to be replaced, the force on the single jacking bracket 3 is FN = (QG-QC) / 4 = 28 tons, which is decomposed to the middle jacking point of the jacking bracket 3. FN = 28 tons. At this time, a jack 4 with a jacking force greater than 28×1.5 = 42 tons is selected.

[0060] 3. The saddle beam structure 1 is directly and evenly stressed, and the stress-bearing position is reasonable, thus avoiding the bearing damage or balance beam structure deformation that may be caused by conventional jacking methods.

[0061] 4. The installation operation is simple, the cost is low, and the tire replacement is fast and the time is short.

[0062] 5. The lifting base 5 is equipped with handrails 52 and four running wheels 53, which are convenient for workers to move the lifting base 5 to the work site.

[0063] 6. The lifting bracket 3 clamps the walking support plates 6 on both sides of the saddle beam through the adjusting bolts 35 and the positioning blocks 36. The connection method is simple and effective, ensuring the stability during the lifting process.

[0064] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. used in the utility model are only for the convenience of description and are not used to limit the scope of implementation of the utility model. Changes or adjustments in their relative relationships should be regarded as the scope of implementation of the utility model without substantially changing the technical content.

[0065] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A tool for replacing tires of RTG, characterized by: It includes a jacking support (3) and a jacking mechanism. The jacking support (3) includes a "U"-shaped jacking frame body (31), a support plate, a connecting plate (32), and an inner support plate (37). The two ends of the "U"-shaped jacking frame body (31) are upwardly provided. The two ends of the upper part of the jacking frame body (31) are respectively connected to one end of a support plate, and the other ends of the two support plates are arranged away from each other. On the upper ends of the two support plates, a connecting plate (32) is symmetrically and vertically provided respectively. Between the two connecting plates (32) on the upper ends of the two support plates, an inner support plate (37) is symmetrically and vertically provided respectively. Between the connecting plate (32) and the inner support plate (37) on the same support plate, the walking support plate (6) on the same side of the RTG can be inserted and limited. The jacking mechanism is used to dock with the lower end of the jacking frame body (31) and perform jacking.

2. The tool for replacing a tire of RTG according to claim 1, characterized in that: On the side of the connecting plate (32) away from the inner support plate (37), triangular stiffening rib plates are provided, and the stiffening rib plates are respectively connected to the upper end of the support plate and the side wall of the connecting plate (32).

3. The tool for replacing a tire of RTG according to claim 1, characterized in that: On the connecting plate (32), several rows of several threaded holes are provided in the vertical direction. In each of the threaded holes, an adjusting bolt (35) is threadedly connected respectively. One end of each adjusting bolt (35) facing the inner support plate (37) is connected with a positioning block (36), and the positioning block (36) is used to press against the side wall of the walking support plate (6) or the side wall of the saddle beam structure (1) of the RTG.

4. The tool for replacing a tire of an RTG according to claim 3, characterized in that: At each threaded hole, a nut (33) is provided, and the adjusting bolt (35) correspondingly threadedly passes through the nut (33) and the corresponding threaded hole.

5. The tool for replacing a tire of an RTG according to claim 1, characterized in that: The height of the inner support plate (37) itself is not higher than the height of the walking support plate (6) itself.

6. The tool for replacing a tire of an RTG according to claim 1, characterized in that: The height of the connecting plate (32) itself is not lower than the height of the walking support plate (6) itself.

7. The tool for replacing a tire of an RTG according to claim 1, characterized in that: At the lower ends of the jacking frame body (31), pads (34) for docking with the jacking mechanism are respectively provided.

8. The tool for replacing a tire of an RTG according to claim 1, characterized in that: The jacking mechanism includes a jack (4) and a jacking base (5). On the upper end of the jacking base (5), a top seat (56) is provided, and a jack (4) is installed on the top seat (56). The jack (4) is used to abut against the lower end of the jacking frame body (31).

9. The tool for replacing a tire of an RTG according to claim 8, characterized in that: The bottom end of the jacking base (5) is in the shape of a rectangular plate, and at the four ends of the bottom end, a walking wheel (53) is provided respectively. On the upper end of each walking wheel (53), a mounting plate (51) is provided. The mounting plate (51) is respectively connected to the side edge of the rectangular plate-shaped bottom end through a hinge (54). The walking wheel (53) can be rotated to be above the bottom end through the hinge (54) connected to the mounting plate (51).

10. The tool for replacing a tire of RTG according to claim 9, characterized in that: Threaded connection holes are provided on the mounting plate, and connection holes are correspondingly provided at the bottom end of the jacking base (5). The threaded connection holes on the mounting plate and the corresponding connection holes at the bottom end of the jacking base (5) can be connected through fastening bolts (55).

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