Crane suspension arm support

Abstract

The utility model relates to a crane jib support which comprises an adjusting mechanism and an anti-abrasion mechanism. The adjusting mechanism comprises a correction support, a supporting block arranged at the top of the supporting frame and an adjusting assembly arranged at the bottom of the supporting frame. The adjusting assembly comprises a bottom plate and a height-adjustable connecting piece; the height-adjustable connecting piece is used for connecting the correction bracket and the bottom plate; the height-adjustable connecting piece comprises an adjusting screw rod and a fixing nut which is in threaded fit with the adjusting screw rod. The anti-abrasion mechanism comprises a steel wire rope carrier roller and a mounting plate used for fixing the steel wire rope carrier roller to the correction support. And the steel wire rope carrier roller comprises a pin shaft and a nylon roller which is arranged on the pin shaft and is in running fit with the pin shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and particularly relates to a boom support of a crane. Background Art

[0002] The boom support is an important component of a truck crane. When the truck crane is in a traveling state, it plays a role in carrying and supporting the boom to ensure the stability of the whole vehicle and the boom.

[0003] Due to factors such as the manufacturing error of the vehicle frame, the manufacturing error of the boom support itself, and the installation error, the existing boom supports often have inconsistent heights on the left and right sides, resulting in insufficient contact between the boom and the support surface of the support, thus causing uneven stress on both sides of the boom, and further affecting the stability of the boom and the integrity of the paint on the boom surface when the truck crane is in a traveling state. The above factors will also cause inconsistent heights of the boom support surfaces of different vehicles, resulting in inconsistent heights of the whole vehicle when in a traveling state, affecting the overall external dimensions of the vehicle, and seriously affecting the user's vehicle license plate registration.

[0004] When the truck crane is in a traveling state, the hook is placed on the walkway plate of the vehicle frame, and the hoisting wire rope passes through the boom support and is placed above the support crossbeam. Due to the self-weight of the wire rope, there is relative movement between the wire rope and the support crossbeam. Before and after the hoisting operation, the hook needs to be removed and placed back above the vehicle frame respectively. During this process, the wire rope has the actions of retracting and releasing, and there is also relative movement with the boom support. All these will cause large friction between the boom support and the wire rope, not only causing wear, paint peeling, and rusting of the boom support crossbeam, but also causing abnormal wear of the hoisting wire rope, affecting the appearance on the one hand and having potential safety hazards on the other hand. Content of the Utility Model

[0005] In order to solve the deficiencies in the prior art, the purpose of the utility model is to provide a boom support of a crane.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A boom support of a crane, the support includes an adjustment mechanism and an anti-wear mechanism.

[0008] The adjustment mechanism includes a correction support, a support block arranged at the top of the support frame, and an adjustment component arranged at the bottom of the support frame; the adjustment component includes a bottom plate and a height-adjustable connecting piece; the height-adjustable connecting piece is used to connect the correction support and the bottom plate; the height-adjustable connecting piece includes an adjustment screw rod and a fixing nut threadedly matched with the adjustment screw rod.

[0009] The anti-wear mechanism includes a wire rope idler and a mounting plate for fixing the wire rope idler on the correction bracket; the wire rope idler includes a pin shaft and a nylon roller mounted on the pin shaft and rotatably engaged with the pin shaft.

[0010] Further, the support block is made of nylon material.

[0011] Further, the correction bracket includes a bracket connecting plate, and a first leg and a second leg symmetrically arranged on both sides of the bracket body; a first groove is provided at the top of the bracket connecting plate, a second groove is provided at the bottom, and a through hole is provided in the middle.

[0012] Further, a foot plate is respectively provided at the bottom of the first leg and the second leg, and a waist-shaped hole is provided on the foot plate.

[0013] Further, both ends of the pin shaft are installed on the bracket connecting plate through a mounting plate.

[0014] Further, the mounting plate is fixed on the bracket connecting plate, the end of the pin shaft is installed on the mounting plate, and is limited by an opening pin.

[0015] Further, the pin shaft is a smooth shaft, and opening pin holes are provided at both ends to prevent the pin shaft from moving outwards.

[0016] Further, both the inside and outside of the nylon roller are cylindrical structures.

[0017] Compared with the prior art, the advantages of the present utility model are as follows:

[0018] The crane boom bracket described in the present utility model includes an adjustment mechanism and an anti-wear mechanism, which can effectively solve the problems existing in the existing brackets, such as difficult adjustment, serious wear of the bracket and the wire rope, or numerous anti-wear parts. The adjustment mechanism is simple and convenient to operate. It can not only ensure the alignment of the bracket and the vehicle frame and the same height on both sides, avoid insufficient contact between the boom and the support block of the bracket and uneven force, resulting in instability and damage to the paint surface, but also effectively ensure the consistency of the overall dimensions of different vehicles, especially the consistency with the record value. The anti-wear mechanism does not have too many installation parts, has a simple structure, is convenient and fast for maintenance and replacement, can effectively avoid the wear of the bracket and the wire rope, and improve the service life of the wire rope. The present utility model has a simple structure, is easy to operate, and has high reliability; it can ensure uniform force on the boom during driving, improve the stability of the boom and the whole vehicle; it can protect the paint surface of the fixed structural parts intact and improve the service life of the hoisting wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the crane boom bracket in the present utility model;

[0020] Figure 2It is a schematic structural view of the supporting foot plate of the boom support in the present utility model.

[0021] Wherein:

[0022] 1. Bottom plate, 2. Correction bracket, 3. Support block, 4. Mounting plate, 5. Pin shaft, 6. Nylon roller, 7. Split pin, 8. Adjusting screw, 9. Fixed nut, 10. Supporting foot plate. Specific embodiments

[0023] The present utility model will be further described below with reference to the accompanying drawings:

[0024] As Figure 1 - Figure 2 shown, a crane boom support includes an adjustment mechanism and an anti-wear mechanism.

[0025] The adjustment mechanism includes a correction bracket 2, a support block 3 provided at the top of the support frame, and an adjustment component provided at the bottom of the support frame. The adjustment component includes a bottom plate 1 and a height-adjustable connecting member; the height-adjustable connecting member is used to connect the correction bracket 2 and the bottom plate 1. The support block 3 is made of nylon. The height-adjustable connecting member includes an adjusting screw 8 and a fixed nut 9 that is threadedly engaged with the adjusting screw 8. The correction bracket 2 includes a bracket connecting plate, a first leg and a second leg symmetrically provided on both sides of the bracket body; a first groove is provided at the top of the bracket connecting plate, a second groove is provided at the bottom, and a through hole is provided in the middle. A supporting foot plate is respectively provided at the bottom of the first leg and the second leg, and a waist-shaped hole is provided on the supporting foot plate.

[0026] The anti-wear mechanism includes a wire rope roller and a mounting plate for fixing the wire rope roller on the correction bracket; the wire rope roller includes a pin shaft 5 and a nylon roller 6 mounted on the pin shaft 5 and rotatably engaged with the pin shaft 5. Both ends of the pin shaft 5 are respectively mounted on the bracket connecting plate through a mounting plate 4. The mounting plate 4 is fixed on the bracket connecting plate, the end of the pin shaft 5 is mounted on the mounting plate, and is limited by a split pin 7.

[0027] The pin shaft 5 is a smooth shaft, and opening pin holes are provided at both ends to prevent the pin shaft from moving outwards. The nylon roller 6 has a cylindrical structure both inside and outside. According to different vehicle models, different numbers of nylon rollers 6 and a pin shaft 4 are selected to jointly form a wire rope roller. The mounting plate 4 is fixed to the bracket 2. The pin shaft 5 passes through the mounting plate 4 and the nylon roller 6 in sequence, and then is positioned by a split pin 7. When the wire rope roller needs to be replaced after long-term use, only need to remove the split pin 7 on one side, pull out the pin shaft 5, replace the severely worn nylon roller 6, and then operate in reverse to restore.

[0028] The working principle of the present utility model is:

[0029] The bottom plate 1 is fixed to the vehicle frame, and the correction bracket 2 and the bottom plate 1 are connected by adjusting the screw 8 and the fixing nut 9. The support foot plate of the bracket 2 is provided with a waist-shaped hole, so that the correction bracket 2 can move left and right relative to the bottom plate 1, ensuring that the central plane of the bracket 2 coincides with the central plane of the vehicle, and further ensuring coincidence with the central plane of the boom, and ensuring that the support block 3 fits against the boom. After the correction bracket 2 is initially fixed, the height on the left and right sides of the correction bracket 2 can be corrected by adjusting the screw 8. When one side is too high, finely adjust the three adjusting screws 8 on this side to make the heights on the left and right sides of the correction bracket 2 the same, and then fix the adjusting screw 8 and the fixing nut 9, lock the adjusted height, tighten the fixing nut 9, and fix the correction bracket 2 to ensure the positioning and height of the bracket 2.

[0030] The pin shaft 5 is a smooth shaft with opening pin holes at both ends to prevent the pin shaft from slipping out. The nylon rollers 6 are cylindrical structures both inside and outside. According to different vehicle models, different numbers of nylon rollers 6 and a pin shaft 4 are selected to jointly form a wire rope idler. The mounting plate 4 is fixed to the correction bracket 2. The pin shaft 5 passes through the mounting plate 4 and the nylon rollers 6 in sequence, and then is positioned with an opening pin 7. When the idler needs to be replaced after long-term use, only need to remove the opening pin 7 on one side, pull out the pin shaft 5, replace the severely worn nylon rollers 6, and then operate in reverse to restore.

[0031] When the vehicle is being retracted or driven, the hoisting wire rope is placed above the wire rope idler, which can avoid the direct contact between the wire rope and the fixed structural parts of the correction bracket 2, thus avoiding the wear of the structural parts and the hoisting wire rope. At the same time, the nylon rollers 6 can rotate freely relative to the pin shaft 5, which can avoid the relative movement between the wire rope and the nylon rollers 6, reduce the wear of the wire rope and the nylon rollers 6, protect the wire rope, and extend the service life of the wire rope.

[0032] In summary, the utility model includes an adjustment mechanism and an anti-wear mechanism, which can effectively solve the problems existing in the existing brackets, such as difficult adjustment, serious wear of the brackets and wire ropes, or numerous anti-wear parts: The adjustment mechanism is simple and convenient to operate, can ensure the centering of the bracket and the vehicle frame and the same height on the left and right, avoid insufficient contact between the boom and the support block of the bracket and uneven force, resulting in instability and damage to the paint surface; it can effectively ensure the consistency of the overall dimensions of different vehicles, especially in line with the recorded values. The anti-wear mechanism does not have too many installation parts, has a simple structure, is convenient for maintenance and replacement, can effectively avoid the wear of the bracket and the wire rope, and extend the service life of the wire rope. The utility model has a simple structure, is convenient to operate, and has high reliability; it can ensure uniform force on the boom during driving, improve the stability of the boom and the whole vehicle; it can protect the paint surface of the fixed structural parts and improve the service life of the hoisting wire rope.

[0033] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A crane boom support, characterized in that, The bracket includes an adjustment mechanism and an anti-wear mechanism; The adjustment mechanism includes a correction bracket (2), a support block (3) arranged at the top of the support frame, and an adjustment component arranged at the bottom of the support frame; the adjustment component includes a bottom plate (1) and a height-adjustable connecting member; the height-adjustable connecting member is used to connect the correction bracket (2) and the bottom plate (1); the height-adjustable connecting member includes an adjustment screw (8) and a fixing nut (9) threadedly engaged with the adjustment screw (8); The anti-wear mechanism includes a wire rope idler and a mounting plate for fixing the wire rope idler on the correction bracket; the wire rope idler includes a pin shaft (5) and a nylon roller (6) mounted on the pin shaft (5) and rotatably engaged with the pin shaft (5).

2. The crane boom bracket according to claim 1, wherein The support block (3) is made of nylon material.

3. The crane boom bracket according to claim 1, wherein The correction bracket (2) includes a bracket connecting plate, a first leg and a second leg symmetrically arranged on both sides of the bracket body; A first groove is provided at the top of the bracket connecting plate, a second groove is provided at the bottom, and a through hole is provided in the middle.

4. The crane boom bracket according to claim 3, wherein A foot plate is respectively provided at the bottom of the first leg and the second leg, and a kidney-shaped hole is provided in the foot plate.

5. The crane boom bracket according to claim 1, wherein Both ends of the pin shaft (5) are mounted on the bracket connecting plate through a mounting plate (4).

6. The crane boom bracket according to claim 5, wherein The mounting plate (4) is fixed on the bracket connecting plate, the end of the pin shaft (5) is mounted on the mounting plate, and is limited by a split pin (7).

7. The crane boom bracket according to claim 1 or 5, wherein The pin shaft (5) is a smooth shaft, and split pin holes are provided at both ends to prevent the pin shaft from moving outwards.

8. The crane boom bracket according to claim 1, wherein Both the inside and outside of the nylon roller (6) are cylindrical structures.

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