Windproof iron wedge and brake device of rail crane

Abstract

The utility model discloses a windproof iron wedge and a braking device of a rail crane. In order to solve the problems that an existing iron wedge device is limited in windproof effect and easy to wear, the windproof iron wedge of the rail crane comprises a wedge block, a pre-pressing plate and a stabilizing component, one end of the pre-pressing plate is fixedly connected with the wedge block, and the other end of the pre-pressing plate extends out relative to the tip part of the wedge block; the stabilizing component is fixedly arranged at the end, away from the tip end of the wedge block, of the wedge block, and the stabilizing component extends downwards relative to the lower surface of the wedge block. And a gap is formed between the pre-pressing plate and the stabilizing component. In this way, in the braking process, it is guaranteed that the wheel accurately presses the wedge block, enough friction force is generated between the iron wedge and the rail, the wheel is prevented from continuing to move, and the windproof braking effect of the iron wedge is enhanced.

Description

Technical Field

[0001] The utility model belongs to a windproof safety device for a rail crane, in particular to a windproof iron wedge and a braking device for the rail crane. Background Art

[0002] In my country's coastal ports, during sudden typhoons and other catastrophic weather events, cranes have been blown away, overturned, or even plunged into the sea, causing significant casualties and property losses. The development of a compact, high-performance, safe, and reliable windbreak for rail cranes is of great practical significance.

[0003] The windbreak wedge is one of the most widely used windbreak devices. When powered on, a pusher lifts the wedge through a transmission mechanism, allowing the crane to operate normally. When powered off, the wedge remains on the rail surface. When a sudden gust of wind blows against the crane, the wheels roll onto the inclined surface of the wedge. The crane's wheel pressure on the wedge creates sliding friction between the wedge and the rail surface, preventing the crane from creeping and ultimately wedging the entire crane into a dead stop.

[0004] Existing windbreaks, such as those described in Chinese Utility Model Patent CN2752225Y, sometimes fail to properly press the crane wheels against the wedges. Furthermore, in strong winds, the wheels can quickly move toward the wedges, sometimes even moving with the crane itself. This suggests the wedges offer limited or no windbreak protection. Furthermore, when the crane rocks back and forth due to lifting heavy objects, the wedges attached to the crane body can move with it, causing rapid wear. Summary of the Invention

[0005] The utility model provides a windproof iron wedge and a braking device for a rail crane, aiming to overcome the shortcomings of the existing iron wedge device, such as limited windproof effect and easy wear.

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

[0007] A windproof iron wedge for a rail crane, which has the structural characteristics of comprising a wedge block, a pre-compression plate and a stabilizing component; one end of the pre-compression plate is fixedly connected to the wedge block, and the other end extends relative to the tip of the wedge block;

[0008] The stabilizing component is fixedly arranged at one end of the wedge away from the tip of the wedge, and the stabilizing component extends downward relative to the lower surface of the wedge;

[0009] There is a gap between the pre-compression plate and the stabilizing component.

[0010] Therefore, the windbreak wedge of the present invention incorporates a preload plate for guidance and a stabilizing component for increased damping, increasing the friction between the windbreak wedge and the guide rail, thereby firmly securing the wheel to the rail. During braking, the crane wheel first presses against the preload plate, then against the wedge, ensuring accurate contact between the wheel and the wedge. This creates sufficient friction between the wedge and the rail, preventing further wheel movement and strengthening the windbreak braking effect of the wedge.

[0011] According to the embodiments of the present invention, the present invention can be further optimized. The following is the technical solution formed after optimization:

[0012] In order to further increase the friction between the iron wedge and the rail, in one preferred embodiment, teeth are provided on the lower surface of the wedge block between the pre-compression plate and the stabilizing component.

[0013] In a preferred embodiment, the stabilizing member comprises a plurality of prongs, with the spacing between each prong no less than the width of the guide rail on which the crane wheels rest. When the wedge is placed on the track, the prongs dig into the asphalt sand on either side of the track, damping the wedge's movement along the track and further enhancing the wedge's wind-resistant braking function.

[0014] In a preferred embodiment, the wedge is provided with a groove for engaging with the brake device. Furthermore, the groove is a waist-shaped groove. Thus, by providing the waist-shaped groove on the iron wedge, the iron wedge will not move back and forth with the back and forth movement of the crane, thereby effectively reducing the amount of wear on the iron wedge.

[0015] Based on the same inventive concept, the utility model also provides a windproof braking device for a rail crane, which includes a frame, a pusher, and a transmission mechanism. The upper ends of the frame, pusher and transmission mechanism are hingedly connected by connecting parts, and the lower end of the transmission mechanism is hingedly connected to the windproof iron wedge.

[0016] In one of the preferred embodiments, the upper part of the pusher is fixedly connected to a joint, the transmission mechanism includes a connecting rod and a lever hinged to the connecting rod, the upper end of the joint and the connecting rod are hingedly connected to one end of the lever through a second hinge shaft, and one end of the lever is hingedly connected to the frame through a third hinge shaft; the lower part of the pusher is hingedly connected to the frame through a first hinge shaft, and the lower part of the connecting rod is hingedly connected to the windproof iron wedge through a fourth hinge shaft.

[0017] In order to enable the crane driver to perceive whether the windproof wedge is in a normal state, in one preferred embodiment, a striker plate is fixedly arranged on the lever, and an induction switch for sensing the movement of the striker plate is fixedly arranged on the frame. Thus, the striker plate can actuate the induction switch and send a corresponding operation signal to the crane driver. When the pusher is electrified and pushed up, the lever rotates around the third bearing. Since the striker plate is fixedly arranged on the lever, the lever drives the striker plate to rotate together. The striker plate actuates the induction switch and sends a signal to the crane driver, indicating that the crane can walk normally.

[0018] In one preferred embodiment, the pusher is an electro-hydraulic pusher.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] 1. The pre-pressure plate fixed on the windproof wedge of the present utility model can ensure that the crane wheels accurately press on the wedge-shaped limiting part, and cooperate with the tooth-shaped structure on the lower surface of the wedge block, increasing the friction between the wedge and the guide rail.

[0021] 2. The arrangement of the pins of the present utility model plays a damping role in the movement of the wedge along the track, thereby ensuring that the wedge is firmly fixed on the guide rail and will not move with the crane.

[0022] 3. The present utility model adopts a waist-shaped groove, and the pusher has sufficient reserved stroke, enabling the fourth hinge shaft to slide along the waist-shaped groove, thereby effectively reducing the wear amount of the wedge. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of an embodiment of the present utility model.

[0024] In the drawings:

[0025] 1. Wedge block; 2. Pre-pressure plate; 3. Pin; 4. Link; 5. First hinge shaft; 6. Second hinge shaft; 7. Lever; 8. Third hinge shaft; 9. Induction switch; 10. Frame; 11. Striker plate; 12. Pusher; 13. Fourth hinge shaft; 14. Joint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. For the convenience of description, words such as "upper", "lower", "left", and "right" hereinafter only indicate the same direction as the upper, lower, left, and right directions of the drawings themselves, and do not limit the structure.

[0027] As Figure 1As shown in the figure, the windproof iron wedge of the rail crane in this embodiment includes a wedge block 1, a pre-pressing plate 2, and a pin 3. One end of the pre-pressing plate 2 is fixedly connected to the lower surface of the wedge block 1, and the other end of the pre-pressing plate 2 extends relative to the wedge block 1. Two pins 3 are fixedly connected to the wedge block 1 and extend relative to the lower surface of the wedge block 1. The distance between the two pins 3 is not less than the width of the rail where the crane wheels are located, so as to ensure that the two pins 3 can fall into the asphalt sand on both sides of the rail. There are teeth on the lower surface of the wedge block 1 between the pre-pressing plate 2 and the pins 3. This structure can further increase the friction force between the iron wedge and the rail. There is a waist-shaped hinge groove on the wedge block 1 for mating connection with the braking device.

[0028] The windproof braking device of the rail crane in this embodiment includes a frame 10, a pusher 12, a connecting rod 4, a lever 7, a first hinge shaft 5, a second hinge shaft 6, a third hinge shaft 8, a fourth hinge shaft 13, an induction switch 9, a striker plate 11, a joint 14, and the above-mentioned windproof iron wedge. The pusher 12 is an electro-hydraulic type. The first hinge shaft 5 and the third hinge shaft 8 are installed on the frame 10, and the second hinge shaft 6 and the fourth hinge shaft 13 are installed on the connecting rod 4. The lower part of the pusher 12 is hinged to the frame 10 through the first hinge shaft 5. The joint 14 fixedly connected to the upper part of the pusher 12, one end of the lever 7, and the upper part of the connecting rod 4 are hinged together through the second hinge shaft 6. The other end of the lever 7 is hinged to the frame 10 through the third hinge shaft 8. The other end of the connecting rod 4 is hinged to the windproof iron wedge through the fourth hinge shaft 13 passing through the waist-shaped groove. An induction switch 9 is installed on the frame 10, and a striker plate 11 is fixedly arranged at one end of the lever 7 close to the second hinge shaft 6. The striker plate 11 can actuate the induction switch 9 and send a corresponding operation signal to the crane driver.

[0029] When the crane starts, the pusher 12 is energized and pushed up. The lever 7 rotates around the third hinge shaft 8. Since the striker plate 11 is fixed on the lever 7, the lever 7 will drive the striker plate 11 to rotate together. The striker plate 11 thus actuates the induction switch 9 and sends a signal to the crane driver, indicating that the crane can walk normally. Next, the iron wedge is lifted through the lever 7 and the connecting rod 4, so that the iron wedge leaves the track. During the process of the crane lifting heavy objects, it often sways back and forth. Since the hinge hole between the wedge block 1 and the fourth hinge shaft 13 is a waist-shaped groove, and the pusher 12 has enough reserved stroke, the fourth hinge shaft 13 can slide along the waist-shaped groove. This structure can prevent the iron wedge from moving back and forth with the back-and-forth swaying of the crane, thus effectively reducing the wear amount of the iron wedge.

[0030] When the crane stops lifting heavy objects, the pusher 12 is powered off and drops. The iron wedge falls on the track under the action of gravity. The two pins 3 of the iron wedge are inserted into the asphalt sand on both sides of the track, which plays a damping role in preventing the iron wedge from moving along the track and keeps the iron wedge in a stable state.

[0031] When the crane is blown by the wind, the wheels of the crane move towards the iron wedge. Since the pre-pressure plate 2 is fixed on the iron wedge, the wheels first press on the pre-pressure plate 2 and then press on the wedge block 1, thus ensuring that the wheels can accurately press on the wedge block 1. At the same time, the wedge block 1 generates sufficient friction with the track through the teeth provided on the lower surface of the pre-pressure plate 2 and the wedge block 1, thereby preventing the wheels from moving further. The wedge block 1 will not move with the crane and plays a role in windproof braking.

[0032] The content illustrated in the above embodiments should be understood that these embodiments are only used to more clearly illustrate the present invention, rather than to limit the scope of the present invention. After reading the present invention, various equivalent forms of modification of this embodiment by those skilled in the art all fall within the scope defined by the appended claims of the present invention.

Claims

1. A windproof iron wedge for a rail crane, characterized in that, It includes a wedge block (1), a pre-pressure plate (2) and a stabilizing component; one end of the pre-pressure plate (2) is fixedly connected to the wedge block (1), and the other end extends out relative to the tip of the wedge block (1). The stabilizing component is fixedly arranged at one end of the wedge block (1) away from the tip of the wedge block (1), and the stabilizing component extends downward relative to the lower surface of the wedge block (1). There is a gap between the pre-pressure plate (2) and the stabilizing component.

2. The anti-wind iron wedge for the rail crane according to claim 1, characterized in that, Teeth are provided on the lower surface of the wedge block (1) between the pre-pressure plate (2) and the stabilizing component.

3. The anti-wind iron wedge of the rail crane according to claim 1, characterized in that, The stabilizing component is a number of pins (3), and the distance between two pins (3) is not less than the width of the rail where the crane wheel is located.

4. The windproof iron wedge of the rail crane according to any one of claims 1-3, characterized in that A groove for cooperating and connecting with the braking device is provided on the wedge block (1).

5. The anti-wind iron wedge for the rail crane according to claim 4, characterized in that, The groove is a waist-shaped groove.

6. A windproof braking device for a rail crane, comprising a frame (10), a pusher (12), and a transmission mechanism. The upper ends of the frame (10), the pusher (12), and the transmission mechanism are hinged and connected by a connecting member. It is characterized in that, The lower end of the transmission mechanism is hinged and connected with the windproof iron wedge according to one of claims 1-5.

7. The windproof braking device of the rail crane according to claim 6, characterized in that, A joint (14) is fixedly connected to the upper part of the pusher (12). The transmission mechanism includes a connecting rod (4) and a lever (7) hinged to the connecting rod. The joint (14), the upper end of the connecting rod (4) and one end of the lever (7) are hinged and connected through a second hinge shaft (6). One end of the lever (7) is hinged and connected to the frame (10) through a third hinge shaft (8); the lower part of the pusher (12) is hinged and connected to the frame (10) through a first hinge shaft (5), and the lower part of the connecting rod (4) is hinged and connected to the windproof iron wedge through a fourth hinge shaft (13).

8. The wind-proof braking device for the rail crane according to claim 7, characterized in that, A striker plate (11) is fixedly arranged on the lever (7), and an induction switch (9) for sensing the action of the striker plate (11) is fixedly arranged on the frame (10).

9. The windproof braking device of the rail crane according to any one of claims 6-8, characterized in that, The pusher (12) is an electro-hydraulic pusher.

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