European style crane with buffer mechanism

Abstract

The utility model particularly relates to a European style crane with a buffer mechanism. Comprising two main beams arranged in a spaced mode, end beams are fixed to the two ends of the bottoms of the two main beams, rails are arranged at the tops of the two main beams, trolley frames run on the rails, mounting plates are arranged at the bottoms of the trolley frames, lifting mechanisms are mounted at the tops of the mounting plates, and connecting plates are arranged at the two ends of the two trolley frames in the length direction. A first buffering mechanism is arranged in the middle of the connecting plate, mounting frames are arranged on the two sides of the tops of the main beams, the mounting frames are fixedly connected to the tops of the two main beams respectively, second buffering mechanisms are arranged on the two opposite side faces of the two mounting frames, and the first buffering mechanism and the second buffering mechanisms are oppositely arranged. The second buffer mechanism adjusts the extension length of the horizontal rod by adjusting the position of the first adjusting nut, adjusts the buffer effect of the buffer spring by adjusting the position of the second adjusting nut, and is more convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hoist, concretely relates to a european style hoist with buffer mechanism. BACKGROUND

[0002] European style hoist is a kind of medium-high end bridge gantry crane, and the bridge crane is mainly hoisting equipment across workshop, and trolley frame walks on main beam, and main beam is installed on end beam, and end beam drives whole machine to move back and forth, and trolley frame drives lifting mechanism to move horizontally, and buffer mechanism can avoid structural damage caused by rigid impact by using buffering effect, and the buffer structure of prior art can only slow down damage caused by impact, and cannot make moving mechanism such as trolley frame stop in time.

[0003] The prior art document CN214243517 discloses a bridge crane with anti-collision function, which can reduce damage caused by impact on trolley frame, but the buffer device generally cannot be adjusted. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a european style hoist with buffer mechanism.

[0005] The technical scheme of the utility model is achieved as follows: a european style hoist with buffer mechanism, which comprises two main beams arranged at intervals, end beams fixed to both ends of the bottom of the two main beams, tracks arranged on the top of the two main beams, trolley frames running on the tracks, mounting plates on the bottom of the trolley frames, lifting mechanisms mounted on the top of the mounting plates, connecting plates arranged at the two ends of the length direction of the two trolley frames, buffer mechanism one arranged at the middle position of the connecting plates, mounting racks arranged on both sides of the top of the main beams, the mounting racks being fixedly connected to the top of the two main beams respectively, buffer mechanism two arranged on the opposite two sides of the two mounting racks, and the buffer mechanism one and the buffer mechanism two being arranged oppositely.

[0006] The buffer mechanism one comprises two horizontally arranged horizontal rods, the horizontal rods are arranged through the connecting plates and extend to both ends of the horizontal rods, buffer plates are arranged on the end portions of the two horizontal rods close to the buffer mechanism one, and buffer springs one are arranged outside the horizontal rods and between the buffer plates and the connecting plates.

[0007] External threads are arranged on the horizontal rods, adjusting nuts one are arranged on the horizontal rods and at the side of the connecting plates, and adjusting nuts two are arranged on the horizontal rods and at both sides of the buffer plates.

[0008] The buffer mechanism two comprises two symmetrically arranged moving rods, the moving rods are horizontally arranged through the mounting frame, the end of the moving rod away from the trolley frame is fixedly connected with a limiting disc, the outer part of the moving rod and between the limiting disc and the mounting frame is provided with a buffer spring two, the end of the two moving rods close to the trolley frame is fixedly connected with a fixed plate, and at least two multi-stage buffer devices are arranged between the fixed plate and the mounting frame.

[0009] The multi-stage buffer device comprises a base plate, a fixed sleeve is connected to the base plate, a slidable piston rod is arranged in the fixed sleeve, an end plate is arranged at the bottom of the piston rod, the top of the piston rod passes through the top of the fixed sleeve, an activity sleeve is arranged outside the fixed sleeve, a buffer spring three is arranged between the bottom of the activity sleeve and the base plate, a buffer spring four is arranged between the bottom of the end plate and the bottom of the fixed sleeve, a connecting ring is fixedly arranged outside the fixed sleeve, and a plurality of buffer springs five are fixedly arranged between the bottom of the connecting ring and the bottom of the activity sleeve.

[0010] The center of the end of the fixed plate close to the trolley frame is fixedly connected with a buffer column.

[0011] The fixed plate is provided with an infrared receiver on the side close to the mounting frame, the mounting frame is provided with an infrared laser displacement sensor on the side close to the fixed plate, and the infrared laser displacement sensor corresponds to the infrared receiver.

[0012] The technical scheme of the utility model has the following positive effects: the utility model discloses two trolley frames are connected through the connecting plate, two main beams are connected through the mounting frame, the connecting plate and the mounting frame are provided with buffer mechanism one and buffer mechanism two, buffer mechanism one and buffer mechanism two can convert impact energy, thereby realizing energy dissipation, buffer mechanism two adjusts the extension length of the horizontal rod by adjusting the position of adjusting nut one, adjusts the buffering effect of the buffer spring by adjusting the position of adjusting nut two, and is more convenient to use for the buffer device that cannot be adjusted; the infrared laser displacement sensor can make the controller cut off the power source of the trolley frame, stop walking, then under the action of buffer mechanism one and buffer mechanism two, avoid the trolley frame from colliding violently, and improve the safety of the crane operation. ACCURACY OF DRAWINGS

[0013] Figure 1 It is the structure of the utility model.

[0014] Figure 2 It is the structure of the utility model.

[0015] Figure 3 It is the connection schematic view of the multi-stage buffer device and the mounting frame and the fixed plate.

[0016] Figure 4 It is the structure schematic view of the multi-stage buffer device in Figure 3 .

[0017] Fig. 1 is a main beam; 2 is an end beam; 3 is a track; 4 is a trolley frame; 5 is a connecting plate; 6 is a horizontal rod; 7 is a buffer plate; 8 is a buffer spring one; 9 is a mounting bracket; 10 is a bottom plate; 11 is a moving rod; 12 is a limiting disc; 13 is a fixed plate; 14 is a base plate; 15 is a buffer column; 16 is a buffer spring two; 17 is an infrared laser displacement sensor; 18 is an adjusting nut one; 19 is an adjusting nut two; 20 is an infrared receiver; 21 is a fixed sleeve; 22 is a piston rod; 23 is an end plate; 24 is a movable sleeve; 25 is a buffer spring three; 26 is a buffer spring four; 27 is a connecting ring; 28 is a buffer spring five. DETAILED DESCRIPTION

[0018] As Figures 1-2 shown, a European style crane with a buffer mechanism, including two main beams 1 arranged at intervals, the two ends of the bottom of the two main beams 1 are fixed with end beams 2, the top of the two main beams 1 is provided with tracks 3, the tracks 3 are provided with trolley frames 4, the bottom of the trolley frames 4 is provided with mounting plates, the top of the mounting plates is provided with lifting mechanisms, the length direction of the two trolley frames 4 is provided with connecting plates 5, the middle position of the connecting plates 5 is provided with buffer mechanism one, the top of the two main beams 1 is provided with mounting brackets 9, the mounting brackets 9 are respectively fixedly connected to the top of the two main beams 1, the opposite two sides of the two mounting brackets 9 are provided with buffer mechanism two, and the buffer mechanism one and the buffer mechanism two are oppositely arranged.

[0019] Specifically, the connecting plate 5 connects the two trolley frames 4, the connecting plate 5 can be fixed on the end of the trolley frame 4 through conventional bolts and nuts, the mounting bracket 9 is located on the top of the two main beams 1, as Figure 1 and Figure 2 shown, the bottom of the mounting bracket 9 is integrally welded with a bottom plate 10, the bottom plate 10 is fixed on the top of the main beam 1 through bolts and nuts, the buffer mechanism one and the buffer mechanism two are respectively arranged on the opposite two sides of the mounting bracket 9 and the connecting plate 5, when the trolley frame 4 moves on the track 3 of the main beam 1 to the two ends of the main beam 1, the buffer mechanism one and the buffer mechanism two collide, thereby preventing the trolley frame 4 from causing rigid collision and causing damage to the trolley frame 4.

[0020] Further, the buffer mechanism one includes two horizontally arranged horizontal rods 6, the horizontal rods 6 pass through the connecting plate 5 and extend to the two ends of the horizontal rods 6, the two horizontal rods 6 are provided with buffer plates 7 near the ends of the buffer mechanism one, and the outside of the horizontal rods 6 and between the buffer plates 7 and the connecting plate 5 are provided with buffer spring one 8; specifically, when the trolley frame 4 moves to the left end, the working process of the buffer mechanism one is that: the buffer plate 7 is made of rubber material, the buffer mechanism one extrudes the buffer plate 7, the buffer spring one 8 is compressed to deform, and the buffer plate 7 is extruded to the right.

[0021] Furthermore, the horizontal rod 6 is provided with external threads, and an adjusting nut 18 is provided on the horizontal rod 6 and on the side of the connecting plate 5. Adjusting nuts 29 are provided on both sides of the horizontal rod 6 and on both sides of the buffer plate 7. Specifically, depending on the specific usage, the extension length of the horizontal rod 6, i.e. the distance between it and the buffer mechanism 1, can be adjusted by adjusting the position of the adjusting nut 18 on the horizontal rod 6, and the buffering effect of the buffer spring 8 can be adjusted by adjusting the position of the adjusting nut 29.

[0022] Furthermore, the second buffer mechanism includes two symmetrically arranged movable rods 11, which are horizontally arranged through the mounting frame 9. The ends of the movable rods 11 away from the trolley frame 4 are fixedly connected to the limiting plate 12. A second buffer spring 16 is provided outside the movable rods 11 and between the limiting plate 12 and the mounting frame 9. The ends of the two movable rods 11 near the trolley frame 4 are fixedly connected to the fixing plate 13. At least two multi-stage buffer devices are provided between the fixing plate 13 and the mounting frame 9.

[0023] Specifically, when the trolley frame 4 moves to the left, the buffer mechanism 1 at the end of the trolley frame moves to contact the buffer mechanism 2. The buffer mechanism 1 presses against the fixed plate 13, causing the moving rod 11 to move to the left. The buffer spring 2 16 is stretched, and the recovery of deformation will drive the moving rod 11 to move to the right. When the fixed plate 13 is pressed to move to the left, the multi-stage buffer device starts to work at the same time.

[0024] Furthermore, the multi-stage buffer device includes a chassis 14, a fixed sleeve 21 connected to the chassis 14, a slidable piston rod 22 inside the fixed sleeve 21, an end plate 23 installed at the bottom of the piston rod 22, the top of the piston rod 22 passing through the top of the fixed sleeve 21, a movable sleeve 24 fitted outside the fixed sleeve 21, a buffer spring 25 between the bottom of the movable sleeve 24 and the chassis 14, a buffer spring 26 between the bottom of the end plate 23 and the bottom of the fixed sleeve 21, a connecting ring 27 fixedly fitted outside the fixed sleeve 21, and several evenly distributed buffer springs 28 fixed between the bottom of the connecting ring 27 and the bottom of the movable sleeve 24.

[0025] Specifically, the fixed plate 13 moves to the left to compress the piston rod 22, and the piston rod 22 compresses the buffer spring 26 to the left. When the piston rod 22 moves to the end face of the movable sleeve 24, the movable sleeve 24 also begins to move to the left. The buffer spring 25 is compressed and the buffer spring 28 is stretched, thus achieving multi-stage buffering and improving the buffering effect.

[0026] Furthermore, a buffer post 15 is fixedly connected to the center of one end of the fixed plate 13 near the trolley frame 4; specifically, the buffer post 15 is made of polyurethane material and comes into contact with the buffer plate 7.

[0027] Further, the infrared receiver 20 is installed on one side of the fixed plate 13 close to the mounting frame 9, the infrared laser displacement sensor 17 is installed on the side of the mounting frame 9 close to the fixed plate 13, and the infrared laser displacement sensor 17 corresponds to the infrared receiver 20; the infrared laser displacement sensor 17 and the infrared receiver 20 can be fixedly installed through bolts, which is a conventional installation mode, and will not be repeated here, specifically, when the buffer mechanism one and the buffer mechanism two interact, when the fixed plate 13 moves to the left, the infrared laser displacement sensor 17 senses the distance change between the infrared receiver 20 on the mounting frame 9, sends the displacement signal to the controller, the controller cuts off the power source of the trolley frame 4, and makes it stop walking, then under the action of the buffer mechanism one and the buffer mechanism two, the trolley frame is avoided from colliding violently, and the safety of the crane operation is improved.

[0028] In the description of the utility model, it is understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.

[0029] The above examples are descriptions of the utility model, not limitations of the utility model, and any simple transformation of the utility model belongs to the protection scope of the utility model.

Claims

1. A European style crane with a buffering mechanism, comprising two main beams arranged at intervals, end beams are fixed at both ends of the bottom of the two main beams, tracks are arranged at the top of the two main beams, carriages are arranged on the tracks, the bottom of the carriages is provided with mounting plates, and hoisting mechanisms are arranged on the top of the mounting plates, characterized in that: The two ends of the length direction of the two trolley frames are provided with connecting plates, the middle positions of the connecting plates are provided with buffer mechanisms one, the top of the main beam is provided with mounting racks on both sides, the mounting racks are fixedly connected to the top of the two main beams respectively, the two opposite sides of the two mounting racks are provided with buffer mechanisms two, and the buffer mechanism one and the buffer mechanism two are oppositely arranged.

2. A European crane with a buffer mechanism according to claim 1, characterized in that: The buffer mechanism one comprises two horizontally arranged horizontal rods, the horizontal rods are arranged through the connecting plates and extend to the two ends of the horizontal rods, the horizontal rods are provided with buffer plates on the ends close to the buffer mechanism one, and the horizontal rods are provided with buffer springs one outside the horizontal rods and between the buffer plates and the connecting plates.

3. A European crane with a buffer mechanism according to claim 2, characterized in that: The horizontal rods are provided with external threads, the horizontal rods are provided with adjusting nuts one on the sides of the connecting plates, and the horizontal rods are provided with adjusting nuts two on the two sides of the buffer plates.

4. A European crane with a buffer mechanism according to claim 2, characterized in that: The buffer mechanism two comprises two symmetrically arranged moving rods, the moving rods are arranged horizontally through the mounting racks, the ends of the moving rods away from the trolley frame are fixedly connected with limiting discs, the moving rods are provided with buffer springs two outside the moving rods and between the limiting discs and the mounting racks, the ends of the two moving rods close to the trolley frame are fixedly connected with a fixed plate, and at least two multistage buffer devices are arranged between the fixed plate and the mounting rack.

5. A European crane with a buffer mechanism according to claim 4, characterized in that: The multistage buffer device comprises a base plate, the base plate is connected with a fixed sleeve, the fixed sleeve is provided with a slidable piston rod, the bottom of the piston rod is provided with an end plate, the top of the piston rod passes through the top of the fixed sleeve, the fixed sleeve is provided with a movable sleeve outside, the bottom of the movable sleeve and the base plate are provided with a buffer spring three, the bottom of the end plate and the bottom of the fixed sleeve are provided with a buffer spring four, the fixed sleeve is fixedly provided with a connecting ring outside, and the bottom of the connecting ring and the bottom of the movable sleeve are fixedly provided with a plurality of equally distributed buffer springs five.

6. A European crane with a buffer mechanism according to claim 4, characterized in that: The fixed plate is fixedly connected with a buffer column at the center of the end close to the trolley frame.

7. A European crane with a buffer mechanism according to claim 5, characterized in that: The fixed plate is provided with an infrared receiver on one side close to the mounting rack, the mounting rack is provided with an infrared laser displacement sensor on the side close to the fixed plate, and the infrared laser displacement sensor corresponds to the infrared receiver.

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