Stabilizing device for big arm of crane

Abstract

The utility model discloses a crane big arm stabilizing device which comprises a lifting assembly and a buffering assembly, the lifting assembly is installed on the top of the buffering assembly, the buffering assembly comprises a base, the top of the base is fixedly connected with a supporting column, a damper is arranged in the supporting column, the bottom of the damper is fixedly connected with the base, and the buffering assembly is installed on the base. The top of the damper is fixedly connected with a loading plate, the loading plate is located over the supporting column, the outer side of the damper is sleeved with a buffer spring, and four telescopic rods are arranged in the supporting column. The buffer assembly adopts the combined design of the damper, the buffer spring and the telescopic rod, so that the device can absorb and disperse the impact force caused by the weight of the large arm of the crane and the huge impact force caused by the falling of the large arm due to the fault of the crane, the large arm of the crane and the crane are effectively protected from being damaged, and the service life of the crane is prolonged. And the safety of a driver and an operator is prevented from being endangered.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane auxiliary device technical field, concretely relates to a kind of stabilizing device of crane jib. BACKGROUND

[0002] Crane, also known as hoist, is a kind of hoisting machinery, which is a kind of mechanical that makes cyclic and intermittent motion, mainly used for vertical lifting and horizontal transport of heavy objects within a certain range. Crane jib is a key hoisting mechanism on the crane, usually composed of main arm, auxiliary arm and top lever, etc. Crane jib, especially the jib of caterpillar crane, can stably carry heavy objects due to its strong load-bearing capacity during operation. However, when the crane is in a non-operating state, a reliable stabilizing device is needed to provide effective support when the jib is idle, so as to ensure the stability and safety of the crane jib.

[0003] The crane telescopic arm support frame disclosed in the publication No. CN210366734U can control the lifting of the crane by controlling the first and second hydraulic telescopic arms, and the first and second inclined support plates set on the first and second sides of the main beam can support the first and second hydraulic telescopic arms. At the same time, the first and second inclined support plates can also serve as mudguards for the crane wheels. Furthermore, the first and second protection seats protrude from the top surface of the main beam, so when the first and second hydraulic telescopic arms are damaged and the crane frame falls, the first and second protection seats can support the crane frame and prevent it from collapsing the suspension cabin in the suspension slot, thus protecting the safety of the driver.

[0004] Although the first and second protection seats of the above-mentioned patent play a key supporting role in the crane telescopic arm support frame, they can provide additional support when the crane frame may fall due to damage to the hydraulic telescopic arms, prevent the crane frame from collapsing the suspension cabin in the suspension slot, and thus protect the safety of the driver, but the overall device still has some deficiencies in design, especially in terms of shock absorption and damping.

[0005] In the case that the crane frame may fall due to various reasons such as hydraulic telescopic arm failure, operation error, etc., although the first and second protection seats can provide some support, the overall device does not have any buffer or damping structure to absorb or disperse these impact forces. This may cause damage to the support frame and the crane itself even if the crane frame is supported due to excessive impact force, and even may endanger the safety of the driver and operator.

[0006] Therefore, it is necessary to invent a stabilizing device for crane jib to solve the above-mentioned problems. Utility Model Content

[0007] The purpose of this invention is to provide a stabilizing device for a crane boom to solve the problems mentioned above.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a stabilizing device for a crane boom, comprising a lifting assembly and a buffer assembly. The lifting assembly is installed on top of the buffer assembly. The buffer assembly includes a base, a support column is fixedly connected to the top of the base, a damper is provided inside the support column, the bottom of the damper is fixedly connected to the base, a loading plate is fixedly connected to the top of the damper, the loading plate is located directly above the support column, a buffer spring is sleeved on the outside of the damper, and four telescopic rods are provided inside the support column. The four telescopic rods are respectively located around the outside of the damper, the bottom of the telescopic rods is fixedly connected to the base, and the top of the telescopic rods is fixedly connected to the loading plate.

[0009] Combining lifting and cushioning components, it effectively supports and stabilizes the crane boom, improving operational safety and efficiency.

[0010] Preferably, the bottom end of the buffer spring abuts against the base, and the top end of the buffer spring abuts against the loading plate.

[0011] The contact position of the buffer spring is clearly defined, ensuring that the buffer spring can fully exert its buffering effect when subjected to pressure.

[0012] Preferably, the outer wall of the support column is fixedly connected with reinforcing ribs, and the bottom of the reinforcing ribs is fixedly connected to the base.

[0013] By fixing the reinforcing ribs, the structural strength of the support column is enhanced, and the load-bearing capacity and deformation resistance of the device are improved.

[0014] Preferably, the surface of the support column is provided with a through groove, and a perforated plate is installed inside the through groove.

[0015] Through grooves are made on the surface of the support column and perforated plates are installed to facilitate the rapid expulsion of air from inside the support column when it is subjected to impact.

[0016] Preferably, the lifting assembly includes a lifting frame, which is mounted on top of the loading plate.

[0017] The lifting frame is fixed by the loading plate, thus assembling the lifting and cushioning components.

[0018] Preferably, a buffer rubber pad is fixedly connected to the inner wall of the support frame, and grooves are provided on both sides of the buffer rubber pad, with a limit plate provided inside the groove.

[0019] The setting of the buffer rubber pad can play a certain buffering effect, and protects the crane jib from being damaged.

[0020] Preferably, the outer wall of the lifting frame is provided with an electric push rod on both sides, and the working end of the electric push rod extends into the groove and is fixedly connected with the limiting pressing plate.

[0021] The design of the electric push rod and the limiting pressing plate enables the device to automatically adjust the clamping force on the crane jib, and ensures the stability of the crane jib in the static state.

[0022] Preferably, the surface of the limiting pressing plate is provided with an antiskid rubber pad, and the surface of the antiskid rubber pad is provided with antiskid lines.

[0023] The setting of the antiskid rubber pad and the antiskid lines increases the friction between the limiting pressing plate and the crane jib, prevents the crane jib from sliding on the lifting frame, and further improves the stability and safety of the device.

[0024] In the above technical solution, the technical effects and advantages of the utility model are provided:

[0025] 1. The combination design of the damper, the buffer spring and the telescopic rod of the buffer assembly enables the device to absorb and disperse the impact force caused by the weight of the crane jib, and the huge impact force caused by the falling of the jib due to the crane failure, effectively protects the crane jib and the crane itself from being damaged, and avoids endangering the safety of the driver and the operator;

[0026] 2. Through the synergistic effect of the lifting assembly and the buffer assembly, the device can provide stable support for the crane jib, ensure the stability of the jib during the operation of the crane, and thus improve the safety and efficiency of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic view of the overall structure of the utility model;

[0028] Figure 2 It is a partial structure sectional view of the utility model;

[0029] Figure 3 It is a schematic view of the structure when the utility model does not lift the crane jib;

[0030] Figure 4 It is a schematic view of the structure when the utility model lifts the crane jib.

[0031] EXPLANATION OF REFERENCE NUMBERS:

[0032] 1, lifting assembly; 2, buffer assembly; 3, base; 4, support column; 5, damper; 6, loading plate; 7, buffer spring; 8, telescopic rod; 9, reinforcing rib; 10, punched plate; 11, lifting frame; 12, buffer rubber pad; 13, groove; 14, limiting pressing plate; 15, electric push rod; 16, anti-skid rubber pad. DETAILED DESCRIPTION

[0033] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0034] The utility model provides a kind of crane boom's stabilizing device as Figures 1-4 As shown in a kind of crane boom's stabilizing device, including lifting assembly 1 and buffer assembly 2, lifting assembly 1 is installed in buffer assembly 2 top, buffer assembly 2 includes base 3, base 3 top is fixedly connected with support column 4, support column 4 inside is provided with damper 5, damper 5 bottom is fixedly connected with base 3, damper 5 top is fixedly connected with loading plate 6, loading plate 6 is located in support column 4 directly above, damper 5 outside is sleeved with buffer spring 7, support column 4 inside is provided with four telescopic rods 8, four telescopic rods 8 are located respectively at damper 5 outside four around, telescopic rod 8 bottom is fixedly connected with base 3, telescopic rod 8 top is fixedly connected with loading plate 6.

[0035] In one aspect of the embodiment, the bottom end of the buffer spring 7 abuts against the base 3, the top end of the buffer spring 7 abuts against the loading plate 6, the reinforcing rib 9 is fixedly connected around the outer wall of the support column 4, the bottom end of the reinforcing rib 9 is fixedly connected with the base 3, a through slot is formed on the surface of the support column 4, the punched plate 10 is installed in the through slot, the lifting assembly 1 includes the lifting frame 11, the lifting frame 11 is installed on the top of the loading plate 6, the buffer rubber pad 12 is fixedly connected to the inner wall of the lifting frame 11, the grooves 13 are formed on both sides of the buffer rubber pad 12, the limiting pressing plate 14 is arranged in the grooves 13, the electric push rod 15 is installed on both sides of the outer wall of the lifting frame 11, the working end of the electric push rod 15 extends into the groove 13 and is fixedly connected with the limiting pressing plate 14, the anti-skid rubber pad 16 is installed on the surface of the limiting pressing plate 14, and the anti-skid pattern is arranged on the surface of the anti-skid rubber pad 16.

[0036] The utility model working principle is:

[0037] Referring to the drawings Figures 1-4 When using the utility model, first, the device is placed stably on the lifting platform of the crane, ensuring that the device is located directly below the crane boom, so that the stabilizing device can accurately receive the boom when the crane boom needs to be supported, the base 3 is fixed firmly on the lifting platform by a suitable fixing method, ensuring that the stabilizing device does not move or shake during the crane operation, thereby ensuring the stability of the crane boom.

[0038] When the crane is in a non-working state, the crane boom is horizontally placed on the lifting frame 11, the electric push rod 15 is started to move the limiting pressing plate 14 to the crane boom, the limiting pressing plate 14 fixes the position by clamping the crane boom, thereby ensuring the stability of the crane boom in the static state, at the same time, the anti-skid rubber pad 16 and the anti-skid lines on its surface can increase the friction to prevent the crane boom from sliding on the lifting frame;

[0039] When the crane boom is placed on the lifting frame, the damper 5, the buffer spring 7 and the telescopic rod 8 will be under pressure and start to contract, under the joint action of these components, the impact force caused by the weight of the crane boom can be absorbed and dispersed, thereby ensuring that the loading plate 6 stably drops to the position abutting against the top end of the support column 4, the support column 4 provides stable support for the crane boom through its solid structure and the reinforcing effect of the reinforcing rib 9;

[0040] When the crane boom falls due to damage of the hydraulic telescopic arm or other reasons, the crane boom will first fall on the buffer rubber pad 12 of the lifting frame 11, this rubber pad can further absorb the impact force and reduce the noise, then the huge impact force will make the damper 5 and the buffer spring 7 further contract, thereby absorbing and dispersing the impact force, ensuring that the loading plate 6 and the lifting frame 11 will not suddenly fall when impacted, the joint action of these components can prevent damage to the crane boom and the crane itself caused by excessive impact force, and avoid endangering the safety of the driver and the operator.

Claims

1. A stabilizing device for a crane jib, comprising a lifting assembly (1) and a damping assembly (2), characterized in that: The lifting assembly (1) is installed on the top of the buffer assembly (2), the buffer assembly (2) comprises a base seat (3), the top of the base seat (3) is fixedly connected with a supporting column (4), the supporting column (4) is internally provided with a damper (5), the bottom of the damper (5) is fixedly connected with the base seat (3), the top of the damper (5) is fixedly connected with a loading plate (6), the loading plate (6) is located directly above the supporting column (4), the damper (5) is sleeved with a buffer spring (7) on the outside, the supporting column (4) is internally provided with four telescopic rods (8), the four telescopic rods (8) are located at the four sides of the damper (5) respectively, the bottom of the telescopic rod (8) is fixedly connected with the base seat (3), and the top of the telescopic rod (8) is fixedly connected with the loading plate (6).

2. A stabilising device for a crane jib as claimed in claim 1, characterised in that: The bottom end of the buffer spring (7) is in abutment with the base seat (3), and the top end of the buffer spring (7) is in abutment with the loading plate (6).

3. A stabilising device for a crane jib as claimed in claim 1, characterised in that: The supporting column (4) is fixedly connected with a reinforcing rib (9) around the outer wall, and the reinforcing rib (9) is fixedly connected with the base seat (3) at the bottom.

4. A stabilising arrangement for a crane jib as claimed in claim 1, characterised in that: The supporting column (4) is provided with a through groove on the surface, and the through groove is internally provided with a punched plate (10).

5. A stabilising device for a crane jib as claimed in claim 1, characterised in that: The lifting assembly (1) comprises a lifting frame (11), and the lifting frame (11) is installed on the top of the loading plate (6).

6. A stabilising arrangement for a crane jib as claimed in claim 5, characterised in that: The lifting frame (11) is fixedly connected with a buffer rubber pad (12) on the inner wall, recesses (13) are formed on the two sides of the buffer rubber pad (12), and the recesses (13) are internally provided with limiting pressing plates (14).

7. A stabilising arrangement for a crane jib as claimed in claim 6, characterised in that: The two sides of the outer wall of the lifting frame (11) are provided with electric push rods (15), and the working end of the electric push rod (15) extends into the recess (13) and is fixedly connected with the limiting pressing plate (14).

8. A stabilising arrangement for a crane jib as claimed in claim 6, characterised in that: The surface of the limiting pressing plate (14) is provided with an antiskid rubber pad (16), and the surface of the antiskid rubber pad (16) is provided with antiskid lines.

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