Buffer device for crane

Abstract

The utility model discloses a buffer device for a crane, which relates to the technical field of crane buffers and comprises a crane beam frame, a mounting plate is fixedly mounted at the left end of the crane beam frame, a buffer is fixedly connected to the left side of the mounting plate, and fixing mechanisms are arranged at four corners of the left side of the mounting plate. Through the mutual cooperation of the connecting sleeve, the hydraulic damper, the sliding pressing column, the rubber pad, the damping spring, the limiting sliding plate, the trapezoidal sliding plate and the buffer spring, when the crane collides with the track, the rubber pad is firstly extruded, and the damping spring and the hydraulic damper can be extruded through the sliding pressing column; and meanwhile, a sliding pressing column moves to drive a limiting sliding plate to extrude a trapezoidal sliding plate, so that the trapezoidal sliding plate can extrude a buffer spring, the damping and buffering effects on the crane are better, and the collision accident of the crane is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of crane buffers, in particular to a buffer device for cranes. Background Art

[0002] A crane mainly includes a lifting mechanism, a traveling mechanism, a luffing mechanism, a slewing mechanism and a metal structure. The lifting mechanism is the basic working mechanism of a crane, and is mostly composed of a hanging system and a winch. There are also those that lift heavy objects through a hydraulic system. The traveling mechanism is used to move heavy objects longitudinally and horizontally or to adjust the working position of the crane. It can be divided into a trolley traveling mechanism and a car traveling mechanism, and is generally composed of a motor, a reducer, a brake and wheels. However, when the brake fails, the trolley traveling mechanism and the car traveling mechanism cannot be braked due to inertia, and the wheels will continue to move forward, which is prone to collision accidents. In order to avoid collision accidents, buffers are usually installed on the traveling mechanism to prevent direct collision between the traveling mechanism and the end of the track.

[0003] The existing technology has the following problems:

[0004] When the existing crane buffer is in use, rubber material is directly used for buffering during collision, which has limited effect. In addition, the rubber material will be damaged due to multiple collisions, which affects the buffering effect and makes the crane prone to damage. At the same time, the existing crane buffer is inconvenient to disassemble and assemble, so when the buffer is damaged, it is not convenient to repair and replace the buffer, which is not conducive to the use of the crane buffer. Utility Model Content

[0005] The utility model provides a buffer device for a crane to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A buffer device for a crane comprises a crane beam, a mounting plate is fixedly mounted on the left end of the crane beam, a buffer is fixedly connected to the left side of the mounting plate, and fixing mechanisms are arranged at the four left corners of the mounting plate.

[0008] The buffer includes a connecting sleeve, which is fixedly connected to the right side of the mounting plate, and the right end of the inner surface of the connecting sleeve is fixedly connected to a hydraulic damper, and the right end of the hydraulic damper is fixedly connected to a sliding pressure column, and the right end of the sliding pressure column passes through the outside of the left end of the connecting sleeve and is fixedly installed with a rubber pad, and the right end of the sliding pressure column is fixedly connected to a shock-absorbing spring, and the shock-absorbing spring is arranged on the outer surface of the hydraulic damper, and the front and rear sides of the right end of the outer surface of the sliding pressure column are fixedly connected to limiting slides, and the front and rear sides of the inner surface of the connecting sleeve are provided with limiting slide grooves, and the limiting slide is slidably connected to the inside of the limiting slide groove.

[0009] A further improvement of the technical solution of the utility model is that a trapezoidal slide is slidably connected inside the limiting slide groove, a side of the trapezoidal slide away from the limiting slide is fixedly connected to a plurality of buffer springs, and a side of the buffer spring away from the trapezoidal slide is fixedly connected to the inner wall of the limiting slide groove.

[0010] A further improvement of the technical solution of the utility model is that a fixing bolt is movably connected to the middle of the rubber pad, the outer surface of the fixing bolt is threadedly connected to the middle of the left end of the sliding pressure column, and a plurality of rubber protrusions are fixedly connected to the left side of the rubber pad.

[0011] A further improvement of the technical solution of the utility model is that the fixing mechanism includes a plug-in column and a knob, the four plug-in columns are respectively fixedly connected to the four right corners of the mounting plate, the right end of the plug-in column passes through the right side of the crane beam, and the four knobs are respectively movably connected to the four left corners of the mounting plate.

[0012] A further improvement of the technical solution of the utility model is that a transmission screw is fixedly connected to the right side of the knob, a cross slide groove is provided inside the plug-in column, the right end of the transmission screw passes through the inside of the cross slide groove and a cross fixing plate is threadedly connected to the outer surface, and an inclined slide groove is provided on each side of the cross slide groove.

[0013] A further improvement of the technical solution of the utility model is that the cross fixing plate includes a threaded slider, a threaded hole penetrating left and right is opened in the middle of the threaded slider, and the inner surface of the threaded hole is threadedly connected to the outer surface of the cross sliding groove.

[0014] A further improvement of the technical solution of the utility model is that four connection frames are fixedly connected to the outer surface of the threaded slider, the four connection frames are respectively slidably connected to the four sides of the cross slide, and the interior of the connection frame is slidably connected to a fixed slide plate.

[0015] A further improvement of the technical solution of the utility model is that sliding columns are fixedly connected to both sides of the fixed slide, sliding grooves are opened on both sides of the connecting frame, and the sliding column is slidably connected inside the sliding groove and one end away from the fixed slide passes through the inside of the inclined sliding groove.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides a buffer device for a crane. Through the mutual cooperation among a connecting sleeve, a hydraulic damper, a sliding pressure column, a rubber pad, a shock-absorbing spring, a limiting slide plate, a trapezoidal slide plate and a buffer spring, when a collision occurs between the crane and the track, the rubber pad will be squeezed first, and the shock-absorbing spring and the hydraulic damper can be squeezed by the sliding pressure column, so that the impact on the crane can be damped. At the same time, the movement of the sliding pressure column will also drive the limiting slide plate to squeeze the trapezoidal slide plate, so that the trapezoidal slide plate can squeeze the buffer spring, thereby making the shock-absorbing and buffering effect of the crane better, and effectively avoiding the occurrence of crane collision accidents.

[0018] 2. The utility model provides a buffer device for a crane. Through the mutual cooperation among the plug-in column, the knob, the transmission screw, the cross slide, the threaded slider, the threaded hole, the connecting frame, the fixed slide plate, the sliding column, the sliding groove and the inclined slide groove, the mounting plate is placed on the crane beam frame, so that the plug-in column is inserted into the right side of the crane beam frame, and by rotating the knob, the transmission screw can drive the threaded slider to slide, so that the fixed slide plate can slide, and the sliding column can slide in the sliding groove and the inclined slide groove, so that the fixed slide plate can be clamped to the right side of the crane beam frame, so that the mounting plate and the buffer can be fixed, and at the same time, the buffer can be disassembled by only rotating the knob in the opposite direction, making the maintenance and replacement of the buffer more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the buffer of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the rubber pad of the utility model;

[0022] Figure 4 It is a schematic cross-sectional structure diagram of the fixing mechanism of the utility model;

[0023] Figure 5 It is a schematic diagram of the cross-section structure of the utility model cross fixing plate.

[0024] In the figure: 1. crane beam; 2. mounting plate; 3. buffer; 31. connecting sleeve; 32. hydraulic damper; 33. sliding pressure column; 34. rubber pad; 341. fixing bolt; 342. rubber bump; 35. shock-absorbing spring; 36. limiting slide plate; 37. trapezoidal slide plate; 38. buffer spring; 4. fixing mechanism; 41. plug-in column; 42. knob; 43. transmission screw; 44. cross slide; 45. cross fixing plate; 451. threaded slider; 452. threaded hole; 453. connecting frame; 454. fixing slide plate; 455. sliding column; 456. sliding groove; 46. inclined slide. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods:

[0026] like Figure 1-3 As shown, the utility model provides a buffer device for a crane, including a crane beam 1, a mounting plate 2 is fixedly installed on the left end of the crane beam 1, a buffer 3 is fixedly connected to the left side of the mounting plate 2, and a fixing mechanism 4 is arranged at the four corners of the left side of the mounting plate 2. The buffer 3 includes a connecting sleeve 31, the connecting sleeve 31 is fixedly connected to the right side of the mounting plate 2, a hydraulic damper 32 is fixedly connected to the right end of the inner surface of the connecting sleeve 31, a sliding pressure column 33 is fixedly connected to the right end of the hydraulic damper 32, the right end of the sliding pressure column 33 passes through the left end of the connecting sleeve 31 and is fixedly installed with a rubber pad 34, the right end of the sliding pressure column 33 is fixedly connected to a damping spring 35, the damping spring 35 is arranged on the outer surface of the hydraulic damper 32, and the sliding pressure column 33 is fixedly connected to the right end of the hydraulic damper 32. The right end of the outer surface of the column 33 is fixedly connected to the limiting slide plate 36 on both sides, and the inner surface of the connecting sleeve 31 is provided with limiting slide grooves on both sides. The limiting slide plate 36 is slidably connected to the inside of the limiting slide groove. The inside of the limiting slide groove is slidably connected with a trapezoidal slide plate 37. The side of the trapezoidal slide plate 37 away from the limiting slide plate 36 is fixedly connected with a plurality of buffer springs 38. The side of the buffer spring 38 away from the trapezoidal slide plate 37 is fixedly connected to the inner wall of the limiting slide groove. The middle part of the rubber pad 34 is movably connected with a fixing bolt 341. The outer surface of the fixing bolt 341 is threadedly connected to the middle part of the left end of the sliding pressure column 33. The left side of the rubber pad 34 is fixedly connected with a plurality of rubber protrusions 342. The rubber protrusions 342 can improve the buffering effect of the rubber pad 34.

[0027] When the buffer 3 is in use, it will be installed on the crane beam 1 through the mounting plate 2 and the fixing mechanism 4. When the crane collides with the track, the rubber pad 34 will be squeezed first, and the shock-absorbing spring 35 can be squeezed through the sliding pressure column 33, so that the impact on the crane can be reduced. At the same time, the sliding pressure column 33 will also squeeze the hydraulic damper 32, so as to reduce the shaking of the crane. In addition, the sliding of the sliding pressure column 33 will also drive the limiting slide plate 36 to slide inside the limiting slide groove, and can squeeze the trapezoidal slide plate 37, so that the trapezoidal slide plate 37 can squeeze the buffer spring 38, thereby making the shock-absorbing and buffering effect of the crane better, and effectively avoiding the occurrence of crane collision accidents.

[0028] like Figure 4-5 As shown, the utility model provides a buffer device for a crane, the fixing mechanism 4 includes a plug-in column 41 and a knob 42, the four plug-in columns 41 are respectively fixedly connected to the four right corners of the mounting plate 2, the right end of the plug-in column 41 penetrates to the right side of the crane beam frame 1, the four knobs 42 are respectively movably connected to the four left corners of the mounting plate 2, the right side of the knob 42 is fixedly connected with a transmission screw 43, the inside of the plug-in column 41 is provided with a cross slide 44, the right end of the transmission screw 43 penetrates into the inside of the cross slide 44 and the outer surface is threadedly connected with a cross fixing plate 45, each side of the cross slide 44 is provided with an inclined slide 46, the cross fixing plate 45 includes a threaded slider 4 51, a threaded hole 452 is provided in the middle of the threaded slider 451, which penetrates from left to right. The inner surface of the threaded hole 452 is threadedly connected to the outer surface of the cross slide 44. Four connecting frames 453 are fixedly connected to the outer surface of the threaded slider 451. The four connecting frames 453 are respectively slidably connected to the four sides of the cross slide 44. A fixed slide 454 is slidably connected inside the connecting frame 453. Both sides of the fixed slide 454 are fixedly connected to sliding columns 455. Both sides of the connecting frame 453 are provided with sliding grooves 456. The sliding column 455 is slidably connected inside the sliding groove 456 and the end away from the fixed slide 454 penetrates into the interior of the inclined slide 46.

[0029] When installing the buffer 3, the mounting plate 2 is placed on the left side of the crane beam 1, and the plug-in column 41 is inserted into the right side of the crane beam 1. By rotating the knob 42, the transmission screw 43 can be rotated, so that the threaded slider 451 can be driven to slide through the threaded cooperation with the threaded hole 452, and the fixed slide plate 454 can be driven to slide through the connecting frame 453. The sliding of the sliding column 455 in the sliding groove 456 and the inclined sliding groove 46 can clamp the fixed slide plate 454 to the right side of the crane beam 1, so that the mounting plate 2 and the buffer 3 can be fixed, which facilitates the use of the buffer 3.

[0030] The working principle of the buffer device for the crane is described in detail below.

[0031] like Figure 1-5 As shown, when the buffer 3 is in use, the mounting plate 2 is placed on the left side of the crane beam 1, and the plug-in column 41 is inserted into the right side of the crane beam 1. The knob 42 can drive the transmission screw 43 to rotate, so that the threaded slider 451 can drive the connecting frame 453 and the fixed slide plate 454 to slide, and the sliding column 455 slides in the sliding groove 456 and the inclined slide groove 46, so that the fixed slide plate 454 can clamp the right side of the crane beam 1, so that the mounting plate 2 and the buffer 3 can be fixed. When the crane collides with the track, the rubber pad 34 will be squeezed first, and the shock-absorbing spring 35 can be squeezed by the sliding pressure column 33, so that the impact on the crane can be damped. In addition, the sliding of the sliding pressure column 33 will also drive the limiting slide plate 36 to squeeze the trapezoidal slide plate 37, so that the trapezoidal slide plate 37 can squeeze the buffer spring 38, so that the shock-absorbing and buffering effect of the crane is better, and the occurrence of crane collision accidents is effectively avoided.

[0032] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A buffer device for a crane, comprising a crane beam (1), a mounting plate (2) being fixedly mounted on the left end of the crane beam (1), characterized in that: A buffer (3) is fixedly connected to the left side of the mounting plate (2), and fixing mechanisms (4) are provided at the four left corners of the mounting plate (2); The buffer (3) comprises a connecting sleeve (31), wherein the connecting sleeve (31) is fixedly connected to the right side of the mounting plate (2), the right end of the inner surface of the connecting sleeve (31) is fixedly connected to a hydraulic damper (32), the right end of the hydraulic damper (32) is fixedly connected to a sliding pressure column (33), the right end of the sliding pressure column (33) passes through the outside of the left end of the connecting sleeve (31) and is fixedly installed with a rubber pad (34), the right end of the sliding pressure column (33) is fixedly connected to a shock absorbing spring (35), the shock absorbing spring (35) is arranged on the outer surface of the hydraulic damper (32), the front and rear sides of the right end of the outer surface of the sliding pressure column (33) are fixedly connected to a limiting slide plate (36), the front and rear sides of the inner surface of the connecting sleeve (31) are provided with limiting sliding grooves, and the limiting slide plate (36) is slidably connected inside the limiting sliding grooves.

2. A buffer device for a crane according to claim 1, characterized in that: A trapezoidal slide plate (37) is slidably connected inside the limiting slide groove, a side of the trapezoidal slide plate (37) away from the limiting slide plate (36) is fixedly connected to a plurality of buffer springs (38), and a side of the buffer spring (38) away from the trapezoidal slide plate (37) is fixedly connected to the inner wall of the limiting slide groove.

3. A buffer device for a crane according to claim 1, characterized in that: The middle part of the rubber pad (34) is movably connected with a fixing bolt (341), the outer surface of the fixing bolt (341) is threadedly connected with the middle part of the left end of the sliding pressure column (33), and the left side of the rubber pad (34) is fixedly connected with a plurality of rubber protrusions (342).

4. A buffer device for a crane according to claim 1, characterized in that: The fixing mechanism (4) comprises a plug-in column (41) and a knob (42), wherein the four plug-in columns (41) are respectively fixedly connected to the four right corners of the mounting plate (2), the right end of the plug-in column (41) passes through the right side of the crane beam frame (1), and the four knobs (42) are respectively movably connected to the four left corners of the mounting plate (2).

5. A buffer device for a crane according to claim 4, characterized in that: A transmission screw (43) is fixedly connected to the right side of the knob (42), a cross slide groove (44) is provided inside the plug-in column (41), the right end of the transmission screw (43) passes through the inside of the cross slide groove (44) and a cross fixing plate (45) is threadedly connected to the outer surface, and an oblique slide groove (46) is provided on each side of the cross slide groove (44).

6. A buffer device for a crane according to claim 5, characterized in that: The cross fixing plate (45) comprises a threaded slider (451), a threaded hole (452) penetrating left and right is provided in the middle of the threaded slider (451), and the inner surface of the threaded hole (452) is threadedly connected to the outer surface of the cross sliding groove (44).

7. A buffer device for a crane according to claim 6, characterized in that: Four connection frames (453) are fixedly connected to the outer surface of the threaded slider (451), and the four connection frames (453) are respectively slidably connected to the four sides of the cross slide groove (44), and the interior of the connection frame (453) is slidably connected to a fixed slide plate (454).

8. A buffer device for a crane according to claim 7, characterized in that: Sliding columns (455) are fixedly connected to both sides of the fixed slide plate (454), sliding grooves (456) are provided on both sides of the connecting frame (453), and the sliding columns (455) are slidably connected inside the sliding grooves (456) and one end away from the fixed slide plate (454) passes through the inside of the inclined sliding groove (46).

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