CN219860294U - Buffer device for crawler crane - Google Patents

Abstract

The utility model provides a buffer device for a crawler crane, which comprises a mounting box, wherein an inner cavity of the mounting box is provided with a swinging ball, the periphery of the inner wall of the mounting box is provided with a buffer mechanism, the buffer mechanism is in contact with the outer wall of the swinging ball, the surface of the swinging ball is provided with a transmission rod, the surface of the mounting box is provided with a through hole, the transmission rod penetrates through the through hole and extends to the outside of the mounting box, one end of the transmission rod is fixedly provided with a hook, the hook is connected with the hook through the buffer mechanism, when the hook swings, the transmission rod drives the swinging ball to swing in the mounting box, the swinging ball swings around to drive a buffer block to move, and the buffer block pushes a travel rod to move in the pneumatic rod through the mounting plate to squeeze the buffer spring, so that the buffer spring compresses and counteracts the buffer stress received by part of the mounting plate, thereby reducing the swinging amplitude of the swinging ball, and further reducing the swinging amplitude of the transmission rod to keep the hook stable, and replacing the fixing mode of a fixing belt.

Description

Buffer device for crawler crane

Technical Field

The utility model relates to the field of buffer devices, in particular to a buffer device for a crawler crane.

Background

The crane can generate a certain impact force due to the weight of the goods at the moment of hoisting, and can cause oscillation impact to the lifting hook, the support of the crane and the goods. In order to avoid the impact force at the moment of lifting, a buffer is added at present, and after the spring in the buffer is stretched or compressed at the moment of lifting, the spring still keeps an extended or compressed state in the whole lifting process, so that the working time of the spring can be prolonged. The elasticity and strength of a spring can be reduced for a long time, the effect is lost, the lifting risk is generated, the existing buffering is not designed with different buffering forces according to different cargo weights, wherein the application number is CN202111493437.X, and the buffering device is automatically switched to rigid connection after lifting; after buffering operation, the tension spring is automatically reset, the service life of the tension spring is prolonged, the vibration below the tension spring is reduced, and the multi-section part of the ejector rod can be rotated; or the ejector rods with different sections are controlled to change the length of the ejector rods, and the positions of the adjusting nuts are correspondingly adjusted to adjust the buffer force, but the existing lifting hooks are fixed on the lifting arms by adopting fixing belts after the use is finished, and as the fixing belts do not have the buffer effect, the lifting hooks are easily torn off due to overlarge swing amplitude caused by bumping of the vehicle body in the driving process, so that the lifting hooks are not limited to swing, and the driving sight is influenced.

Disclosure of Invention

The utility model aims to provide a buffer device for a crawler crane, which aims to solve the problems that the prior lifting hook provided by the background art is fixed on a suspension arm by adopting a fixing belt after the use, and the fixing belt does not have a buffer effect, and the fixing belt is easily torn off due to overlarge swing amplitude of the lifting hook caused by bumping a vehicle body in the driving process, so that the lifting hook is not limited to swing, and the driving sight is influenced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a buffer device for crawler crane, includes the installation case, the top both sides fixed mounting of installation case have the fixed plate, the surface threaded connection of fixed plate has fixing bolt, the inner chamber of installation case is equipped with the swing ball, buffer gear is installed around the inner wall of installation case, buffer gear and the outer wall contact of swing ball, the surface mounting of swing ball has the transfer line, the through-hole has been seted up on the surface of installation case, the transfer line interlude through-hole just extends to the installation case outside, the one end fixed mounting of transfer line has the couple;

the buffer mechanism comprises a pneumatic rod, a travel rod, a limiting ring, a buffer spring, a mounting plate and a buffer block, wherein the bottom end of the pneumatic rod is hinged to the inner wall of the mounting box.

As a further description of the utility model: the inner piston of the pneumatic rod is connected with a travel rod, the surfaces of the pneumatic rod and the travel rod are fixedly connected with limiting rings, a buffer spring is fixedly connected between the limiting rings, and one end of the travel rod is fixedly connected with a mounting plate.

As a further description of the utility model: the mounting panel surface fixedly connected with buffer block, arc recess has been seted up on the surface of buffer block, swing ball's outer wall and arc recess inner wall contact.

As a further description of the utility model: the outer wall of the through hole is fixedly provided with a rubber protective sleeve, and the rubber protective sleeve is sleeved on the surface of the transmission rod.

As a further description of the utility model: one end of the rubber protective sleeve is connected with a locking ring.

As a further description of the utility model: the back of the swing ball is provided with a universal joint which is fixedly arranged in the installation box.

Compared with the prior art, the utility model has the beneficial effects that: through the buffer gear who is equipped with, the couple with lifting hook and transfer line one end installation articulates, drive the transfer line swing when the lifting hook appears swinging, the transfer line drives swing ball at the inside swing of mounting box, thereby the arc recess contact with buffer block surface drives buffer block and removes when swing ball is to swing all around, the buffer block passes through the mounting panel and promotes the stroke pole to the inside removal of pneumatic rod, stroke pole surface mounting's spacing ring extrudees buffer spring when moving to the pneumatic rod is inside, the buffer stress that buffer spring compression offset part mounting panel received this moment, thereby reduce the swing range of swing ball, further make the transfer line reduce swing range and make the lifting hook keep stable, compare with the comparison document, the device can reduce the swing of lifting hook when driving, the fixed mode of fixed band has been replaced, avoid influencing the driving field simultaneously, and rubber protection sleeve is installed to the outer wall of through-hole, rubber protection sleeve establishes at the transfer line surface makes and avoids the dust to get into the mounting box inside, rubber protection sleeve's one end is connected with the locking ring for rubber protection sleeve and transfer line fixed connection.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a schematic view of a buffer mechanism according to the present utility model;

FIG. 4 is a schematic view of the rubber boot structure of the present utility model.

In the figure: 1. a mounting box; 2. a fixing plate; 3. a fixing bolt; 4. a swing ball; 5. a buffer mechanism; 51. a pneumatic lever; 52. a travel bar; 53. a limiting ring; 54. a buffer spring; 55. a mounting plate; 56. a buffer block; 561. an arc-shaped groove; 6. a transmission rod; 7. a through hole; 8. a hook; 9. a rubber protective sleeve; 10. a locking ring; 11. and a universal joint.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a buffer device for crawler crane, including installation case 1, the top both sides fixed mounting of installation case 1 have fixed plate 2, the surface threaded connection of fixed plate 2 has fixing bolt 3, the inner chamber of installation case 1 is equipped with swing ball 4, buffer gear 5 is installed around the inner wall of installation case 1, buffer gear 5 and the outer wall contact of swing ball 4, the surface mounting of swing ball 4 has transfer line 6, through-hole 7 has been seted up on the surface of installation case 1, transfer line 6 alternates through-hole 7 and extends to the installation case 1 outside, the one end fixed mounting couple 8 of transfer line 6;

the buffer mechanism 5 comprises a pneumatic rod 51, a travel rod 52, a limiting ring 53, a buffer spring 54, a mounting plate 55 and a buffer block 56, wherein the bottom end of the pneumatic rod 51 is hinged to the inner wall of the mounting box 1.

In this embodiment: the inside piston of pneumatic rod 51 is connected with stroke pole 52, and the surface of pneumatic rod 51 and stroke pole 52 is all fixedly connected with spacing ring 53, fixedly connected with buffer spring 54 between two spacing rings 53, and the one end fixedly connected with mounting panel 55 of stroke pole 52, mounting panel 55 fixedly connected with buffer block 56, arc recess 561 has been seted up on the surface of buffer block 56, and the outer wall and the arc recess 561 inner wall contact of swing ball 4.

The specific use is as follows: the lifting hook is connected with the hanging hook 8 arranged at one end of the transmission rod 6 in a hanging mode, when the lifting hook swings, the transmission rod 6 drives the swinging ball 4 to swing in the installation box 1, the swinging ball 4 contacts with the arc-shaped groove 561 on the surface of the buffer block 56 when swinging around, so that the buffer block 56 is driven to move, the buffer block 56 pushes the travel rod 52 to move towards the inside of the pneumatic rod 51 through the installation plate 55, the buffer spring 54 is extruded by the limiting ring 53 arranged on the surface of the travel rod 52 when the travel rod 52 moves towards the inside of the pneumatic rod 51, at the moment, the buffer spring 54 compresses and counteracts buffering stress received by the installation plate 55, so that the swing amplitude of the swinging ball 4 is reduced, the swing amplitude of the transmission rod 6 is further reduced, the lifting hook is kept stable, and compared with a comparison document, the device can reduce the swing of the lifting hook when driving, and the fixing mode of a fixing belt is replaced.

In this embodiment: the outer wall of the through hole 7 is fixedly provided with a rubber protective sleeve 9, the rubber protective sleeve 9 is sleeved on the surface of the transmission rod 6, and one end of the rubber protective sleeve 9 is connected with a locking ring 10.

The specific use is as follows: the rubber protection sleeve 9 is installed on the outer wall of the through hole 7, the rubber protection sleeve 9 is sleeved on the surface of the transmission rod 6 so as to prevent dust from entering the installation box 1 through the through hole 7, and one end of the rubber protection sleeve 9 is connected with the locking ring 10 so as to enable the rubber protection sleeve 9 to be fixedly connected with the transmission rod 6.

In this embodiment: the back of the swing ball 4 is provided with a universal joint 11, and the universal joint 11 is fixedly arranged inside the mounting box 1.

The specific use is as follows: the back of the swing ball 4 is provided with a universal joint 11, so that the swing ball 4 can swing at any angle along with the transmission rod 6.

Working principle: the lifting hook is hung with the hook 8, when the lifting hook swings, the driving rod 6 is driven to swing, the driving rod 6 drives the swinging ball 4 to swing in the installation box 1, the universal joint 11 is installed at the back of the swinging ball 4, the swinging ball 4 can swing at any angle along with the driving rod 6, the swinging ball 4 swings around to drive the buffer block 56 to move, the buffer block 56 pushes the travel rod 52 to move towards the inside of the pneumatic rod 51 through the installation plate 55 to squeeze the buffer spring 54, and at the moment, the buffer spring 54 compresses and counteracts buffering stress received by the installation plate 55, so that the swinging amplitude of the swinging ball 4 is reduced, and the driving rod 6 is further enabled to reduce the swinging amplitude to enable the lifting hook to be stable.

Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art may modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features thereof, and any modifications, equivalent substitutions, improvements and the like within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims (6)

1. Buffer for crawler crane, including mounting box (1), its characterized in that: the novel high-speed swing type automobile is characterized in that fixing plates (2) are fixedly arranged on two sides of the top of the installation box (1), fixing bolts (3) are connected to the surfaces of the fixing plates (2) in a threaded mode, swing balls (4) are arranged in the inner chamber of the installation box (1), buffer mechanisms (5) are arranged on the periphery of the inner wall of the installation box (1), the buffer mechanisms (5) are in contact with the outer wall of the swing balls (4), transmission rods (6) are arranged on the surfaces of the swing balls (4), through holes (7) are formed in the surfaces of the installation box (1), the transmission rods (6) penetrate through the through holes (7) and extend to the outer portion of the installation box (1), and hooks (8) are fixedly arranged at one ends of the transmission rods (6);

the buffer mechanism (5) comprises a pneumatic rod (51), a travel rod (52), a limiting ring (53), a buffer spring (54), a mounting plate (55) and a buffer block (56), wherein the bottom end of the pneumatic rod (51) is hinged to the inner wall of the mounting box (1).

2. The buffer device for a crawler crane according to claim 1, wherein: the pneumatic device is characterized in that a travel rod (52) is connected to an inner piston of the pneumatic rod (51), limiting rings (53) are fixedly connected to the surfaces of the pneumatic rod (51) and the travel rod (52), buffer springs (54) are fixedly connected between the two limiting rings (53), and a mounting plate (55) is fixedly connected to one end of the travel rod (52).

3. The buffer device for a crawler crane according to claim 2, wherein: the mounting plate (55) surface fixedly connected with buffer block (56), arc recess (561) have been seted up on the surface of buffer block (56), the outer wall and the contact of arc recess (561) inner wall of swing ball (4).

4. The buffer device for a crawler crane according to claim 1, wherein: the outer wall of the through hole (7) is fixedly provided with a rubber protective sleeve (9), and the rubber protective sleeve (9) is sleeved on the surface of the transmission rod (6).

5. The buffer device for a crawler crane according to claim 4, wherein: one end of the rubber protective sleeve (9) is connected with a locking ring (10).

6. The buffer device for a crawler crane according to claim 1, wherein: the back of the swing ball (4) is provided with a universal joint (11), and the universal joint (11) is fixedly arranged in the installation box (1).