Rolling type suspension arm rest stand

Abstract

The utility model provides a rolling type lazy arm rest stand which is applied to lazy arm placement of a crane and comprises a bracket and more than two carrier roller devices, limiting blocks are respectively arranged on two sides of the top of the bracket, an opening is formed between the limiting blocks, the carrier roller devices are arranged in the opening and located on one side of the limiting blocks, and the limiting blocks are arranged on the carrier roller devices. The carrier roller device comprises a support and two or more roller sets, the roller sets are detachably installed on the support in the width direction of the support, the support is arranged on one side of the limiting block in the axis direction of the opening, and the axis where the support is located inclines inwards and downwards in the axis direction where the opening is located. According to the utility model, the friction between the suspension arm and the rest stand can be reduced, so that the noise generated by the friction is reduced, and the stability of the suspension arm is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting arms, in particular to a rolling lifting arm storage rack. Background Art

[0002] With the continuous innovative development of modern industrial manufacturing, cranes have become indispensable equipment in offshore engineering, and are widely used in lifting goods on offshore platforms, and are also used in offshore replenishment, transportation transfer, underwater operations, etc. of goods between ships. When the crane does not need to work, that is, when the lifting arm of the crane is in a non-working state, the lifting arm needs to be horizontally placed on the ship to ensure that the lifting arm does not swing significantly during the ship's voyage at sea.

[0003] For example, in the patent document with the Chinese patent application number 202321514466.4 and the publication date of December 19, 2023, it discloses an auxiliary crane lifting arm storage rack, which is fixedly arranged on the outer side wall of the hull, and includes a storage rack connected to the side wall of the hull and a first inclined support plate. The first inclined support plate is located on one side of the horizontal plane of the storage rack, and the other end of the first inclined support plate is fixedly connected to the other end of the storage rack. A second inclined support plate is connected to the other end of the storage rack and is located below it.

[0004] In the above document, the storage rack is installed at the outer longitudinal wall of the hull deck, forming an independent area outside the hull deck to assist in placing the lifting arm of the crane. The first inclined support plate and the second inclined support plate are connected to the storage rack to play a supporting role, and then relatively arranged first limiting blocks and second limiting blocks are arranged on the storage rack, and wear-resistant blocks are respectively arranged on the first limiting blocks and the second limiting blocks to place the lifting arm; however, due to the long length of the lifting arm, it will undergo flexural deformation under the action of gravity. At the same time, during the ship's voyage on the sea, under the action of sea waves, there will be an acceleration in the vertical direction, so that under the action of the acceleration and its own gravity, the flexural deformation of the lifting arm will be continuously aggravated, resulting in the lifting arm moving along the length direction between the storage rack. The above structure only limits by setting friction blocks between the two limiting blocks, so that when subjected to external forces, the friction between the lifting arm and the storage rack will be increased, which is easy to wear the lifting arm and generate noise. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a rolling lifting arm storage rack, which can reduce the friction between the lifting arm and the storage rack, thereby reducing the noise generated by friction and ensuring the stability of the lifting arm placement.

[0006] To achieve the above object, a rolling boom rest is applied to the placement of the boom of a crane. It includes a bracket and more than two roller devices. On both sides of the top of the bracket, there are respectively limit blocks, and an opening is formed between the limit blocks. The roller device is arranged on one side of the limit blocks within the opening. The roller device includes a bracket and more than two roller groups. The roller groups are detachably installed on the bracket along the width direction of the bracket. The bracket is arranged on one side of the limit blocks along the axis direction of the opening, and the axis where the bracket is located is inclined inward and downward towards the axis where the opening is located.

[0007] With the above settings, by setting the limit blocks, an opening can be formed on the bracket, enabling the boom to slide into the opening along the limit blocks, thereby restricting large left - right swings of the boom and playing a role in placing and restricting the swing of the boom. By setting the bracket and installing the roller groups on the bracket at the same time, the boom lowered into the opening can achieve rolling connection through the roller groups, reducing the noise generated by friction and at the same time reducing the wear of the boom. Since rolling enables the boom to move in the axis direction of the opening, and the axis where the bracket is located is inclined inward and downward towards the axis where the opening is located, the rolling friction force generated when an external force is applied makes the boom tend to move inward and downward towards the bracket, reducing the possibility of the boom moving outward under the action of an external force, and thus being able to slow down the moving distance of the boom in the axis direction of the opening, making the placement of the boom more stable.

[0008] Furthermore, the angle formed between the axis where the bracket is located and the axis where the opening is located is 9° - 13°.

[0009] With the above settings, forming an angle with the axis where the opening is located can further ensure slowing down the moving distance of the boom in the axis direction of the opening, making the placement of the boom more stable.

[0010] Furthermore, on both sides of the bottom of the bracket, there are fixedly provided support frames. The support frames include support frame one and support frame two. Support frame one is perpendicularly connected to the bracket, one end of support frame two is perpendicularly connected to the bracket, and the other end of support frame two deviates outward.

[0011] With the above settings, the bracket can be supported by the support frames, and since support frame two deviates outward, the friction between the support frame and the ship surface can be increased.

[0012] Furthermore, on one side of the limit block, there are a chamfered portion, a connecting portion, and a supporting portion. The angle formed between the top of the limit block and one end of the chamfered portion is 120° - 130°. The angle formed between the other end of the chamfered portion and one end of the connecting portion is 130° - 145°. The other end of the connecting portion is connected to one end of the supporting portion in a planar manner. The other end of the supporting portion is fixedly connected to the bracket, and the width of the other end of the supporting portion is greater than the width of one end of the supporting portion.

[0013] With the above settings, by setting the chamfered part, it can play a guiding role during the lowering process of the boom, so that the boom slides into the opening along the connecting part, and the supporting part can increase the contact area between the limiting block and the bracket, enabling the connection between the limiting block and the bracket to withstand greater stress.

[0014] Furthermore, cushion blocks are provided on both the chamfered part and the connecting part.

[0015] With the above settings, it prevents the boom from directly colliding with the limiting block and generating friction, thereby causing wear to the boom.

[0016] Furthermore, the limiting block includes a first limiting block and a second limiting block. The first limiting block and the second limiting block are symmetrically and parallelly arranged on both sides of the top of the bracket with respect to the axis where the opening is located. The width of the opening is greater than the width of the boom.

[0017] With the above settings, it is convenient for the first limiting block and the second limiting block to limit the boom, so that when the boom is lowered, it can just be placed into the opening.

[0018] Furthermore, the roller group includes a pin shaft, a limiting member, and more than two rollers. The rollers are sleeved on the pin shaft. One end of the pin shaft is provided with a perforation matching the fixing member, and the limiting member passes through the perforation and is detachably arranged on the pin shaft.

[0019] With the above settings, it is convenient to sleeve the rollers on the pin shaft for installation and disassembly.

[0020] Furthermore, the lower end of the bracket is fixed on the bracket. Along the length direction of the bracket, more than two mounting plates are fixedly provided at the upper end of the bracket. There are intervals between the mounting plates and they are arranged in parallel. More than two through holes are provided on the mounting plates, and the through holes between the mounting plates are coaxially arranged.

[0021] With the above settings, it is convenient for the pin shaft to pass through the through holes, and then the rollers are installed on the bracket.

[0022] Furthermore, the interval width between the mounting plates is greater than the width of the rollers, and the distance between the centers of two through holes on the same mounting plate is greater than the diameter of the rollers.

[0023] With the above settings, it is convenient for the rollers to be installed between the two mounting plates, and at the same time, the rotation of the rollers between adjacent roller groups does not interfere with each other.

[0024] Furthermore, the top plane of the mounting plate is lower than the top of the rollers.

[0025] With the above settings, after the boom is placed on the bracket, it can make the flat plate on the boom abut against the rollers. During the moving process, rolling occurs between the flat plate and the rollers, thereby reducing friction and reducing noise at the same time. Description of the Drawings

[0026] Figure 1 This is the front view of the present utility model.

[0027] Figure 2 This is the top view of the present utility model.

[0028] Figure 3 This is the side view of the present utility model.

[0029] Figure 4 This is the side view of the idler device in the present utility model.

[0030] Figure 5 This is the top view of the idler device in the present utility model.

[0031] Figure 6 This is the front view of the idler device in the present utility model.

[0032] Figure 7 is Figure 1 the enlarged view at position A in

[0033] Figure 8 This is the schematic diagram of the angle formed by the axis where the bracket is located and the axis where the opening is located in the present utility model. Detailed implementation manners

[0034] The following further describes the present utility model in detail with reference to the accompanying drawings and specific implementation manners.

[0035] As Figures 1 to 8 shown, a rolling boom rest is applied to the placement of the boom of a crane, and includes a bracket 1 and two idler devices. Limiting blocks are respectively arranged on both sides of the top of the bracket 1, and an opening 3 is formed between the limiting blocks. The idler device is arranged on one side of the limiting block within the opening 3. By arranging the limiting blocks, an opening 3 can be formed on the bracket 1, enabling the boom to slide into the opening 3 along the limiting blocks, thereby restricting large-scale left and right swaying of the boom and playing a role in resting and restricting the swinging of the boom. Support frames are arranged on both sides of the bottom of the bracket 1, and the support frames are fixedly welded to the bottom of the bracket 1. The support frames include a support frame one 41 and a support frame two 42. The support frame one 41 is vertically connected to the bracket 1, one end of the support frame two 42 is vertically connected to the bracket 1, and the other end of the support frame two 42 is set to deviate outward. In this way, the bracket 1 can be supported by the support frames, and the outward deviation of the support frame two 42 can increase the contact area between the support frame and the ship surface, thereby increasing the friction between the support frame and the ship surface. In this embodiment, the number of both the support frame one 41 and the support frame two 42 is set to two.

[0036] As Figure 1 and 7As shown in the figure, a chamfered portion 21, a connecting portion 22, and a supporting portion 23 are provided on one side of the limiting block. An included angle a is formed between the top of the limiting block and one end of the chamfered portion 21, and the angular range of the included angle a is 120° to 130°. An included angle b is formed between the other end of the chamfered portion 21 and one end of the connecting portion 22, and the angular range of the included angle a is 130° to 145°. In this embodiment, the angle of the included angle a is 127°, and the angle of the included angle b is 143°. The other end of the connecting portion 22 is connected to one end of the supporting portion 23 in a planar manner, that is, the upper end surfaces are flush after the other end of the connecting portion 22 is connected to one end of the supporting portion 23. The other end of the supporting portion 23 is fixedly connected to the bracket 1, and the width of the other end of the supporting portion 23 is greater than the width of one end of the supporting portion 23. By providing the chamfered portion 21, it can play a guiding role during the lowering process of the boom, so that the boom slides into the opening along the connecting portion 22, and the supporting portion 23 can increase the contact area between the limiting block and the bracket 1, enabling the connection between the limiting block and the bracket 1 to withstand greater stress. Cushion blocks 24 are provided on both the chamfered portion 21 and the connecting portion 22. In this embodiment, the cushion block 24 is a sleeper, and screw holes 25 are provided on the sleeper. The sleeper is fixed to the chamfered portion 21 and the connecting portion 22 by screws, thereby preventing the boom from directly colliding with the limiting block and causing friction, and further preventing the boom from being worn.

[0037] In this embodiment, as Figure 1 shown, the limiting block includes a limiting block one 211 and a limiting block two 222. The limiting block one 211 and the limiting block two 222 are symmetrically and parallelly arranged on both sides of the top of the bracket 1 with respect to the axis 5 where the opening 3 is located. The width of the opening 3 is greater than the width of the boom, which facilitates the limiting block one 211 and the limiting block two 222 to limit the boom, so that the boom can just be placed into the opening 3 during the lowering process.

[0038] As Figures 4 - 6 shown in FIGS. 7 and 8, the idler roller device includes a bracket 11 and more than two roller groups. The bracket 11 is arranged on one side of the limiting block along the axis 5 direction of the opening 3. An included angle c is formed between the axis 9 where the bracket 11 is located and the axis 5 where the opening 3 is located. In this embodiment, the angle of the included angle c is 10°. The roller groups are detachably installed on the bracket 11 along the width direction of the bracket 11. The roller group includes a pin shaft 12, a limiting member (not marked in the figure), and more than two rollers 13. The rollers 13 are sleeved on the pin shaft 12. One end of the pin shaft 12 is provided with a perforation matching the fixing member, and the limiting member passes through the perforation and is detachably arranged on the pin shaft 12. In this embodiment, the number of rollers in each roller group is set to three, and the limiting member is a bolt.

[0039] As Figures 4 - 7As shown in the figure, the lower end of the support 11 is fixed on the bracket 1. Along the length direction of the support 11, more than two mounting plates 14 are fixedly provided at the upper end of the support 11. There is a gap 15 between the mounting plates 14 and they are arranged in parallel. More than two through holes 16 are provided on the mounting plates 14. The through holes 16 between the mounting plates 14 are coaxially arranged. The top plane 17 of the mounting plate 14 is lower than the top of the roller 13. In this way, after the boom is placed on the bracket 1, the flat plate on the boom can be abutted against the roller 13. During the moving process, rolling is realized between the flat plate and the roller 13, thereby reducing friction and at the same time reducing noise. At the same time, the width of the gap 15 between the mounting plates 14 is greater than the width of the roller 13, and the distance between the centers of the two through holes 16 on the same mounting plate 14 is greater than the diameter of the roller 13. In this way, it is convenient for the roller 13 to be installed between the two mounting plates 14, and at the same time, the rotation of the rollers 13 between adjacent roller groups does not interfere with each other.

[0040] Working principle of the utility model: A support frame is arranged at the bottom of the bracket 1 to support the bracket 1. Then, opposite limiting blocks are arranged on both sides of the top of the bracket 1. Through the limiting blocks, an opening 2 can be formed on the bracket 1. A roller device is arranged on one side of the limiting block, so that the boom slides into the opening 3 along the limiting block. Thus, the flat plate on the boom is in rolling connection with the roller 13 on the roller device, thereby reducing friction and at the same time reducing noise, playing a role in shelving the boom, and at the same time being able to limit the large swing of the boom.

Claims

1. A rolling boom shelf, used for placing the boom of a crane, comprising a bracket and two or more roller devices, characterized in that: Limit blocks are respectively provided on both sides of the top of the bracket, and an opening is formed between the limit blocks. The roller device is arranged in the opening on one side of the limit block. The roller device includes a bracket and more than two roller groups. The roller group is detachably installed on the bracket along the width direction of the bracket. The bracket is arranged on one side of the limit block along the axial direction of the opening, and the axis of the bracket is inclined inward and downward toward the axial direction of the opening.

2. The rolling boom shelf according to claim 1, characterized in that: The angle formed between the axis where the bracket is located and the axis where the opening is located is 9°~13°.

3. The rolling boom shelf according to claim 1, characterized in that: Support frames are fixedly provided on both sides of the bottom of the bracket, and the support frames include support frame 1 and support frame 2. Support frame 1 is vertically connected to the bracket, one end of support frame 2 is vertically connected to the bracket, and the other end of support frame 2 is arranged to deviate outward.

4. The rolling boom shelf according to claim 1, characterized in that: A chamfered portion, a connecting portion and a supporting portion are provided on one side of the limit block. The angle formed between the top of the limit block and one end of the chamfered portion is 120°~130°, the angle formed between the other end of the chamfered portion and one end of the connecting portion is 130°~145°, the other end of the connecting portion is plane-connected to one end of the supporting portion, the other end of the supporting portion is fixedly connected to the bracket, and the width of the other end of the supporting portion is greater than the width of one end of the supporting portion.

5. The rolling boom shelf according to claim 4, characterized in that: Pads are provided on the chamfered portion and the connecting portion.

6. The rolling boom shelf according to claim 4, characterized in that: The limit blocks include limit block 1 and limit block 2, which are symmetrically and parallelly arranged on both sides of the top of the bracket about the axis where the opening is located, and the width of the opening is greater than the width of the boom.

7. The rolling boom shelf according to claim 1, characterized in that: The roller assembly comprises a pin shaft, a limiting member and more than two rollers, the rollers are sleeved on the pin shaft, one end of the pin shaft is provided with a through hole matching the fixing member, and the limiting member is detachably arranged on the pin shaft through the through hole.

8. The rolling boom shelf according to claim 1, characterized in that: The lower end of the bracket is fixed on the bracket, and the upper end of the bracket is fixed with more than two mounting plates along the length direction of the bracket. The mounting plates are spaced apart and arranged in parallel. The mounting plates are provided with more than two through holes, and the through holes between the mounting plates are coaxially arranged.

9. The rolling boom shelf according to claim 8, characterized in that: The spacing width between the mounting plates is greater than the width of the roller, and the distance between the centers of two through holes on the same mounting plate is greater than the diameter of the roller.

10. The rolling boom shelf according to claim 9, characterized in that: The top plane of the mounting plate is lower than the top of the roller.

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