Rubber suspension for automobile crane

Abstract

The utility model relates to the technical field of rubber suspensions, and discloses a rubber suspension for an automobile crane, which comprises a saddle, limiting components are arranged at two ends of the outer wall of the saddle, an auxiliary component is arranged on the inner wall of the saddle, a rubber main spring is fixedly connected to the outer wall of the bottom of the saddle, and the other end of the rubber main spring is fixedly connected with a fixing frame. The outer wall of the fixing frame is fixedly connected with a balance beam, the limiting assembly comprises a limiting block, the bottom of the limiting block is fixedly connected to the outer wall of the saddle, the outer wall of the limiting block is fixedly connected with a rubber sleeve, the outer wall of the limiting block is sleeved with a first spring, and one end of the first spring is fixedly connected to the outer wall of the limiting block. According to the utility model, the limiting frame is driven by the downward acting force of the fixing frame and the equalizing beam, the limiting frame moves downwards to touch the rubber sleeve and the first spring for buffering, and the maximum distance between the equalizing beam and the saddle is limited when the limiting block is reached, so that the potential safety hazard caused by the damage of the rubber main spring due to stretching is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile crane suspension, especially relates to rubber suspension for automobile crane. BACKGROUND

[0002] In modern engineering construction, the automobile crane plays a vital role, and the rubber suspension as one of the core components of the crane, its performance is directly related to the working stability, safety and service life of the crane. With the increasingly complex engineering operation environment, higher requirements are put forward for the driving performance and operation adaptability of the crane, and the rubber suspension not only needs to ensure the smooth driving of the crane on the flat road, but also needs to maintain the stability and safety of the vehicle when facing bad road conditions.

[0003] In the prior art, the mechanical structure of the rubber suspension of the automobile crane is generally conventional. Generally, the traditional rubber main spring is used as the main elastic element, and a simple equalizing beam structure is used to realize the shock absorption and load distribution of the vehicle. Its technical principle is to buffer the vibration and impact in the driving process of the vehicle based on the elastic deformation of the rubber main spring, and the equalizing beam adjusts the stress balance of the left and right wheels to a certain extent. When the vehicle is driving, the unevenness of the road is transmitted to the rubber main spring through the wheels, and the rubber main spring deforms to absorb energy, thereby reducing the vibration impact on the vehicle body. In this structure, the components work together to maintain the normal driving posture of the vehicle.

[0004] However, the prior art has obvious defects. When the crane passes through the trench road or rises the tire for work, the structure of the existing rubber suspension cannot effectively limit the maximum distance between the equalizing beam and the saddle. When the crane encounters a deep trench, the equalizing beam will move greatly with the change of the position of the wheel, and due to the lack of effective limiting mechanism, the equalizing beam is likely to excessively stretch the rubber main spring, resulting in damage to the internal structure of the rubber main spring. Frequent overstretching can cause fatigue, cracking and other problems of the rubber main spring, seriously affecting its service life, and thus greatly increasing the maintenance cost of the rubber main spring, and even possibly causing safety hazards during the operation of the crane, threatening the safety of the workers. Therefore, the rubber suspension for automobile crane is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a rubber suspension for automobile crane, which aims to improve the problem of limiting the distance between the equalizing beam and the saddle in the prior art.

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

[0007] The utility model provides a rubber suspension for truck crane, including saddle, the both ends of saddle outer wall all are provided with limit component, the inner wall of saddle is provided with auxiliary assembly, the bottom outer wall of saddle fixedly connected with rubber main spring, the other end of rubber main spring is fixedly connected with fixed frame, the outer wall of fixed frame is fixedly connected with equalizing beam,

[0008] The limit component includes a limiting block, the bottom of the limiting block is fixedly connected to the outer wall of the saddle, a rubber sleeve is fixedly connected to the outer wall of the limiting block, a spring one is sleeved on the outer wall of the limiting block, one end of the spring one is fixedly connected to the outer wall of the limiting block, the other end of the spring one is fixedly connected to the inner wall of the top of the rubber sleeve, a limiting frame is arranged above the rubber sleeve, one end of the limiting frame is fixedly connected to the outer wall of one side of the fixed frame,

[0009] As a further description of the above technical solution:

[0010] The auxiliary assembly includes a fixed block one and a damper, the fixed block one and the damper are arranged inside the saddle, the outer wall of the fixed block one is fixedly connected with a connecting block on both sides, and the connecting block is rotatably connected with a rotating rod in the inner wall,

[0011] As a further description of the above technical solution:

[0012] The outer wall of the rotating rod is fixedly connected with a connecting rod one, and the other end of the connecting rod one is fixedly connected with a fixed plate,

[0013] As a further description of the above technical solution:

[0014] The outer wall of the connecting rod one is slidably connected with a shell, the outer wall of the fixed plate is slidably connected to the inner wall of the shell, the outer wall of the connecting rod one is sleeved with a spring two, one end of the spring two is fixedly connected to the inner wall of one side of the shell, and the other end of the spring two is fixedly connected to the outer wall of the fixed plate,

[0015] As a further description of the above technical solution:

[0016] One end of the shell is fixedly connected with a connecting rod two, and the other end of the connecting rod two is fixedly connected with a universal shaft,

[0017] As a further description of the above technical solution:

[0018] The outer wall of the universal shaft is fixedly connected with a fixed block two, and the outer wall of the fixed block two is fixedly connected to the inner wall of the saddle,

[0019] As a further description of the above technical solution:

[0020] The bottom of the fixed block one is fixedly connected to the top of the damper, the bottom of the damper is fixedly connected with a fixed block three, and the fixed block three is fixedly connected to the top of the equalizing beam.

[0021] As a further description of the above technical solutions:

[0022] The damper sleeve is provided with a spring three, one end of the spring three is fixedly connected to the bottom of the fixed block one, and the other end of the spring three is fixedly connected to the top of the fixed block three.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1. In the utility model, when the crane passes through the groove pavement or works to lift the tire, the equalizing beam drives the limiting frame to exert downward pressure, buffers the equalizing beam when the equalizing beam touches the rubber sleeve and the spring one, and limits the equalizing beam when the limiting frame completely contacts the limiting block, thereby limiting the maximum distance between the equalizing beam and the saddle, avoiding the stretching damage of the equalizing beam to the rubber main spring and causing safety hazards, reducing the damage frequency of the rubber main spring caused by excessive stretching, reducing the maintenance cost, increasing the service life of the rubber main spring, and further ensuring the continuous, stable and safe operation of the crane under various complex working conditions.

[0025] 2. In the utility model, when the crane turns and tilts, the saddle tilts and drives the fixed block one, the fixed block one exerts a pushing force on the connecting block, the connecting block then drives the rotating rod and the connecting rod one, and then the connecting rod one drives the fixed plate to stretch the spring two, and the other end of the spring two is compressed. When the crane is running, the resistance of the damper at the bottom of the fixed block one is adjusted, the spring three buffers the saddle, thereby sharing part of the pressure of the rubber main spring, the load of the rubber main spring is shared, the rubber main spring is prevented from being subjected to transverse load when the crane tilts, the rubber main spring is prevented from failing, and the safety of the crane operator is protected. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The utility model provides a three-dimensional schematic view of a rubber suspension for a truck crane;

[0027] Figure 2 The utility model provides a structure schematic view of a limiting assembly of a rubber suspension for a truck crane;

[0028] Figure 3 The utility model provides a structure schematic view of an auxiliary assembly of a rubber suspension for a truck crane;

[0029] LEGEND:

[0030] 1 saddle; 2 fixed frame; 3 equalizing beam; 4 rubber main spring; 5 limit frame; 6 limit block; 7 spring one; 8 rubber sleeve; 9 fixed block one; 10 connecting block; 11 rotating rod; 12 connecting rod one; 13 spring two; 14 shell; 15 fixed plate; 16 connecting rod two; 17 universal shaft; 18 fixed block two; 19 damper; 20 spring three; 21 fixed block three. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] With reference to Figure 1 And Figure 2 An embodiment provided by the utility model: a rubber suspension for a truck crane, comprising a saddle 1, which is made of high-strength alloy steel material, has excellent strength and rigidity, and can stably bear the huge load generated during crane operation; the outer wall of the saddle 1 is provided with a limiting assembly at both ends; the inner wall of the saddle 1 is provided with an auxiliary assembly; the bottom outer wall of the saddle 1 is fixedly connected with a rubber main spring 4; the rubber main spring 4 is made of special rubber material, has good elasticity, can effectively buffer the vibration and impact during vehicle driving, has excellent wear resistance and aging resistance, and can ensure long-term stable working performance; the other end of the rubber main spring 4 is fixedly connected with a fixed frame 2; the outer wall of the fixed frame 2 is fixedly connected with an equalizing beam 3; the equalizing beam 3 is made of alloy structural steel material, is precisely machined and heat treated, can accurately adjust the stress balance of left and right wheels, and can ensure the stability of the crane during driving and operation.

[0033] The limiting assembly comprises a limiting block 6 made of cast iron material with high hardness and wear resistance, the bottom of the limiting block 6 is fixedly connected to the outer wall of the saddle 1 by bolt fastening, so that the limiting block 6 will not be loose and separated during long-term use, the outer wall of the limiting block 6 is fixedly connected with a rubber sleeve 8 made of high-quality natural rubber, the rubber sleeve 8 has good flexibility and buffering performance, a spring 7 is sleeved on the outer wall of the limiting block 6, the spring 7 is made of high-carbon steel material and has high elastic limit and fatigue strength after special heat treatment process, one end of the spring 7 is fixedly connected to the outer wall of the limiting block 6, the other end of the spring 7 is fixedly connected to the inner wall of the top of the rubber sleeve 8, the spring 7 is wrapped by the rubber sleeve 8 to prevent corrosion and rust of the spring 7 during long-term use, a limiting frame 5 made of high-strength aluminum alloy material is arranged above the rubber sleeve 8, the limiting frame 5 effectively reduces the weight while ensuring the structural strength, one end of the limiting frame 5 is fixedly connected to the outer wall of one side of the fixed frame 2 by bolt fastening;

[0034] Referring to Figure 1 and Figure 3The auxiliary assembly comprises the fixed block one 9 and the damper 19, the fixed block one 9 and the damper 19 are arranged inside the saddle 1, the fixed block one 9 is made of high-strength cast steel material, the outer wall of the fixed block one 9 is fixedly connected with the connecting block 10 on both sides through a precise welding process, the connecting block 10 is made of aluminum alloy material, the material has good strength and light weight, which can ensure the structural stability and help to reduce the load of the overall device, the inner wall of the connecting block 10 is rotatably connected with the rotating rod 11, the rotating rod 11 is made of alloy steel and has excellent strength and toughness, and can withstand complex torsional and bending stress, the outer wall of the rotating rod 11 is fixedly connected with the connecting rod one 12, the connecting rod one 12 is also made of alloy steel and has high strength and good fatigue resistance, the other end of the connecting rod one 12 is fixedly connected with the fixed plate 15, the fixed plate 15 is made of stainless steel plate and has a polished surface, which has strong corrosion resistance and can slide smoothly on the inner wall of the shell 14, the outer wall of the connecting rod 12 is slidably connected with the shell 14, the shell 14 is made of aluminum alloy extrusion forming process and has good strength and light weight characteristics, the outer wall of the connecting rod one 12 is sleeved with the spring two 13, one end of the spring two 13 is fixedly connected to the inner wall of one side of the shell 14, the other end of the spring two 13 is fixedly connected to the outer wall of the fixed plate 15, one end of the shell 14 is fixedly connected with the connecting rod two 16, the other end of the connecting rod two 16 is fixedly connected with the universal shaft 17, the connecting rod two 16 is made of high-strength alloy structural steel and is finely processed to ensure accurate and reliable connection with the shell 14 and the universal shaft 17, the outer wall of the universal shaft 17 is fixedly connected with the fixed block two 18, the fixed block two 18 is made of the same cast steel material as the fixed block one 9, the outer wall of the fixed block two 18 is fixedly connected to the inner wall of the saddle 1, the bottom of the fixed block one 9 is fixedly connected to the top of the damper 19, the bottom of the damper 19 is fixedly connected with the fixed block three 21, the fixed block three 21 is also made of cast steel material, and the fixed block three 21 is fixedly connected to the top of the equalizing beam 3, the damper 19 is sleeved with the spring three 20, the spring three 20 is made of high-quality spring steel and has a suitable elastic coefficient and a high fatigue life, one end of the spring three 20 is fixedly connected to the bottom of the fixed block one 9, and the other end of the spring three 20 is fixedly connected to the top of the fixed block three 21;

[0035] Working principle: when the crane encounters a deep groove or lifts the tire, the equalizing beam 3 drives the fixed frame 2 to move downward due to gravity, then the fixed frame 2 drives the limiting frame 5 to move downward, and when the limiting frame 5 moves downward and touches the rubber sleeve 8 and the spring one 7, the spring one 7 buffers the limiting frame 5, until the limiting frame 5 completely touches the limiting block 6, the limiting frame 5 limits the fixed frame 2 and the equalizing beam 3, thereby limiting the maximum distance between the equalizing beam 3 and the saddle 1, and when the crane tire does not leave the ground, the limiting assembly does not interfere with the damping effect of the rubber main spring 4.

[0036] When the crane turns and the vehicle body tilts to one side, the saddle 1 drives the fixed block two 18 to move, the fixed block two 18 drives the universal shaft 17 to move, then the universal shaft 17 drives the shell 14 to slide on the outer wall of the connecting rod 12, the connecting rod 12 drives the fixed plate 15 to slide in the inner wall of the shell 14, then the connecting rod 12 drives the spring two 13 to stretch, the other end of the spring is compressed, thereby sharing the lateral load of the crane on the rubber main spring 4 when turning and tilting, avoiding the rubber main spring 4 from being damaged too early to affect the driving safety, when driving normally, the equalizing beam 3 drives the fixed block three 21, the fixed block three 21 drives the damper 19 to move, the damper 19 adjusts the spring three 20 to buffer the saddle 1, thereby sharing part of the pressure of the rubber main spring 4, prolonging the service life of the rubber main spring.

[0037] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. Rubber suspension for a lorry crane, comprising a saddle (1), characterised in that: The saddle (1) outer wall both ends are provided with limiting assembly, the saddle (1) inner wall is provided with auxiliary assembly, the saddle (1) bottom outer wall is fixedly connected with rubber main spring (4), the rubber main spring (4) other end is fixedly connected with fixed frame (2), the fixed frame (2) outer wall is fixedly connected with equalizing beam (3); The limiting assembly includes limiting block (6), the limiting block (6) bottom is fixedly connected on the saddle (1) outer wall, the limiting block (6) outer wall is fixedly connected with rubber sleeve (8), the limiting block (6) outer wall is equipped with spring one (7), the spring one (7) one end is fixedly connected on the limiting block (6) outer wall, the spring one (7) other end is fixedly connected on the rubber sleeve (8) top inner wall, the rubber sleeve (8) top is provided with limiting frame (5), the limiting frame (5) one end is fixedly connected on the fixed frame (2) one side outer wall.

2. Rubber suspension for a lorry crane according to claim 1, characterized in that: The auxiliary assembly includes fixed block one (9) and damper (19), the fixed block one (9) and damper (19) are arranged in the saddle (1), the fixed block one (9) outer wall both sides are fixedly connected with connecting block (10), the connecting block (10) inner wall is rotatably connected with rotating stick (11).

3. Rubber suspension for a lorry crane according to claim 2, characterized in that: The rotating stick (11) outer wall is fixedly connected with connecting rod one (12), the connecting rod one (12) other end is fixedly connected with fixed plate (15).

4. Rubber suspension for a lorry crane according to claim 3, characterized in that: The connecting rod one (12) outer wall is slidably connected with shell (14), the fixed plate (15) outer wall is slidably connected on the shell (14) inner wall, the connecting rod one (12) outer wall is equipped with spring two (13), the spring two (13) one end is fixedly connected on the shell (14) one side inner wall, the spring two (13) other end is fixedly connected on the fixed plate (15) outer wall.

5. Rubber suspension for a lorry crane according to claim 4, characterized in that: The shell (14) one end is fixedly connected with connecting rod two (16), the connecting rod two (16) other end is fixedly connected with universal shaft (17).

6. Rubber suspension for a lorry crane according to claim 5, characterized in that: The universal shaft (17) outer wall is fixedly connected with fixed block two (18), the fixed block two (18) outer wall is fixedly connected on the saddle (1) inner wall.

7. The rubber suspension for a truck crane according to claim 2, characterized in that: The fixed block one (9) bottom is fixedly connected on the damper (19) top, the damper (19) bottom is fixedly connected with fixed block three (21), the fixed block three (21) is fixedly connected on the equalizing beam (3) top.

8. Rubber suspension for a lorry crane according to claim 7, characterized in that: The damper (19) is equipped with spring three (20), the spring three (20) one end is fixedly connected on the fixed block one (9) bottom, the spring three (20) other end is fixedly connected on the fixed block three (21) top.

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