Crane anti-collision device

Abstract

The present invention discloses a crane anti-collision device, which belongs to the technical field of crane anti-collision mechanisms, and comprises two relatively arranged support frames, wherein a cross beam is slidably arranged on the top of the support frame, plug-in units are respectively installed on opposite sides of the two cross beams, and pressure rods matched with the plug-in units are arranged on the two cross beams, gears are installed on both sides of the bottom of the cross beams, and racks meshing with the gears are fixedly arranged on the top surface of the support frame; through the cooperation of the arranged rotating shaft and sleeve, when a single cross beam moves and approaches the other cross beam, the cross beam in a stationary state can be locked with the cross plate, thereby avoiding the situation that the two cross beams collide and move on the support frame, and when the two cross beams move simultaneously and approach each other, the insertion rod will not be inserted into the insertion hole, thereby avoiding the situation that the goods sway due to the sudden stop of the two cross beams.

Description

Technical Field

[0001] The invention relates to the technical field of crane anti-collision mechanisms, and in particular to a crane anti-collision device. Background Art

[0002] Gantry crane is a variation of bridge crane, also called gantry crane, which is mainly used for loading and unloading operations in outdoor cargo yards, material yards and bulk cargo.

[0003] Chinese patent CN215160388U discloses a gantry crane anti-collision device, which controls the distance between two hoisting trolleys through a distance meter. The alarm indicator light can be reflected according to the distance, which is convenient for users to observe. In an emergency, an alarm can be sounded through a buzzer.

[0004] The above-mentioned device prevents the two lifting trolleys from directly colliding with each other by installing buffer pads on the opposite sides of the two lifting trolleys. However, in actual use, when the moving trolley collides with the trolley stationary on the main beam, the stationary trolley will move relative to the main beam, causing the cargo under the trolley to shake, posing certain safety hazards. In summary, the above-mentioned device still has room for improvement.

[0005] Therefore, it is necessary to provide a crane anti-collision device to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a crane anti-collision device to solve the problem that the existing device proposed in the above-mentioned background technology prevents the two hoisting trolleys from directly colliding by installing buffer pads on the opposite sides of the two hoisting trolleys, but in actual use, when the moving trolley collides with the trolley stationary on the main beam, the stationary trolley will move relative to the main beam, thereby causing the cargo under the trolley to shake, posing a certain safety hazard.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a crane anti-collision device, comprising two support frames arranged opposite to each other, a crossbeam is slidably arranged on the top of the support frame, plug-in units are respectively installed on opposite sides of the two crossbeams, and pressure rods matching with the plug-in units are arranged on the two crossbeams, gears are installed on both sides of the bottom of the crossbeam, and a rack meshing with the gears is fixedly arranged on the top surface of the support frame;

[0008] Insertion rods are elastically installed on both sides of the bottom of the cross beam, a cross plate is fixedly arranged on the outside of the cross beam, and a plurality of insertion holes are evenly opened on the top surface of the cross plate. A first control component is arranged on one side of the gear, and a second control component is arranged on the opposite ends of the plug-in units on the two cross beams;

[0009] When the crossbeam moves relative to the support frame, the first control component can cause the pressure rod to press the plug-in unit on the crossbeam;

[0010] When one of the beams approaches the beam in a stationary state on the support frame, the second control component on the beam in a stationary state can cause the insertion rod on the beam to pop out and insert into the insertion hole.

[0011] As a further solution of the present invention: the plug-in unit on one of the crossbeams is a rotating shaft, and the plug-in unit on the other crossbeam is a sleeve. When the two crossbeams are close to each other, the rotating shaft can be inserted into the sleeve.

[0012] As a further solution of the present invention: the first control component and the second control component both include a turntable and a top block at the outer circumference of the turntable, the number of the top blocks is set to be multiple and is evenly distributed in a ring shape on the outside of the turntable, the top block is fan-shaped as a whole and elastically cooperates with the turntable, the turntable located at the gear can rotate synchronously with the gear, and the turntable located at the end of the plug-in unit is fixedly cooperated with the plug-in unit.

[0013] As a further solution of the present invention: a first electromagnet is arranged on the cross beam at the pressure rod, a stopper is arranged at the bottom end of the pressure rod passing downward through the first electromagnet, the stopper is made of iron, a first pressure plate is arranged above the turntable on one side of the gear, the first pressure plate can move in the vertical direction relative to the cross beam, a first switch is arranged above the first pressure plate, and the first switch is installed at the bottom surface of the cross beam, and the first switch is electrically connected to the first electromagnet.

[0014] As a further solution of the present invention: a second pressure plate is provided at the turntable at one end of the plug-in unit, a second switch is installed on the beam on the side of the second pressure plate away from the turntable, a second electromagnet is provided on the beam, the second switch is electrically connected to the second electromagnet, the top end of the insertion rod passes through the second electromagnet upward and is provided with a stop block, and the stop block is made of iron.

[0015] As a further solution of the present invention: a limit block is elastically installed on the inner wall of the sleeve, a limit groove matching the limit block is opened on the outer circumference of the rotating shaft, the limit groove is arranged in a spiral shape, a horizontal straight groove is opened on the outer circumference of the rotating shaft, the straight groove is located at the end of the limit groove away from the cross beam and is connected with the limit groove, the end of the straight groove away from the limit groove extends to the end face of the rotating shaft away from the cross beam, and the end face of the rotating shaft away from the cross beam is provided with a chamfer.

[0016] As a further solution of the present invention: a pressure head is fixedly provided on the top end of the pressure rod, and the pressure head is made of rubber material.

[0017] As a further solution of the present invention: a groove which is slidably matched with the top block is provided on the outer peripheral surface of the turntable.

[0018] As a further solution of the present invention: buffers are installed on opposite sides of the two beams.

[0019] As a further solution of the present invention: rotating wheels are installed on both sides of the bottom of the beam, and a horizontal axis is fixedly set at the center position of the rotating wheel, so that the rotating wheel can rotate with the beam through the horizontal axis, and a track that matches the rotating wheel is fixedly set on the support frame. A motor is installed on the beam at the rotating wheel, and the output shaft of the motor is matched with the horizontal axis on the rotating wheel for transmission, and a brake pad is set at the rotating wheel.

[0020] Compared with the prior art, the beneficial effect of the present invention is that: this device cooperates with the sleeve through the arranged rotating shaft, and when a single beam moves and approaches another beam, the beam in a stationary state can be locked with the cross plate, thereby avoiding the situation where the two beams collide and move on the support frame, and when the two beams move at the same time and approach each other, the insertion rod will not be inserted into the insertion hole, thereby avoiding the situation where the goods sway due to the sudden stop of the two beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the position of the buffer of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the plug-in unit of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the limiting block and the limiting groove of the present invention;

[0026] Figure 5 It is a schematic diagram of the cooperation between the limit block and the sleeve of the present invention;

[0027] Figure 6 The present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0028] Figure 7 is a cross-sectional view of the rotating shaft and the cross beam of the present invention;

[0029] Figure 8 is a cross-sectional view of the sleeve and the crossbeam of the present invention;

[0030] Fig. 9 The present invention Figure 7 A schematic diagram of the enlarged structure at B;

[0031] Fig.10It is a schematic diagram of the top block structure of the present invention;

[0032] Fig.11 It is a schematic diagram of the buffer structure of the present invention.

[0033] In the figure: 1, support frame; 2, cross plate; 201, jack; 3, rack; 4, cross beam; 5, turntable; 501, top block; 502, connecting rod; 6, gear; 7, rotating shaft; 701, limit groove; 702, chamfer; 703, straight groove; 8, sleeve; 9, plug rod; 901, stop block; 10, reflector; 11, laser generator; 12, buffer; 1201, slide bar; 1202, sleeve; 13, rotating wheel; 14, limit block; 15, first switch; 16, first pressure plate; 17, hanging plate; 1701, slide groove; 18, connecting shaft; 19, pressure rod; 1901, stop part; 20, pressure head; 21, second pressure plate; 22, second switch; 23, guide hole; 24, second electromagnet; 25, first electromagnet; 26, slider. DETAILED DESCRIPTION

[0034] like Figure 1-Figure 8 As shown, a crane anti-collision device includes two supporting frames 1 arranged relatively to each other, and a crossbeam 4 is slidably arranged on the top of the supporting frame 1. The crossbeam 4 can slide along the length direction of the supporting frame 1, and a lifting unit similar to a winch can be installed on the crossbeam 4. Of course, according to actual production needs, a trolley for installing the lifting unit can be slidably assembled on the crossbeam 4, and the trolley can move along the length direction of the crossbeam 4. Through this structure, materials can be lifted and transported.

[0035] In order to drive the cross beam 4 to move on the support frame 1, in actual use, rotating wheels 13 can be installed on both sides of the bottom of the cross beam 4, and a horizontal axis is fixedly set at the center position of the rotating wheel 13, so that the rotating wheel 13 can rotate with the cross beam 4 through the horizontal axis, and a track matching the rotating wheel 13 is fixedly set on the support frame 1, and a motor is installed on the cross beam 4 at the rotating wheel 13, and the output shaft of the motor is matched with the horizontal axis transmission on the rotating wheel 13, and a brake pad is set at the rotating wheel 13, and the rotating wheel 13 can be braked by the brake pad. Of course, the specific structure and working principle of the brake pad are mature technical means in the industry, and they are not described here. In actual use When the two beams 4 are close to each other, a laser generator 11 and a reflector 10 are installed on both beams 4, so that the laser generator 11 on one beam 4 can be aligned with the reflector 10 on the other beam 4. The laser generator 11 can be connected to the above-mentioned motor through a controller (such as a single-chip microcomputer or a PLC structure). When the two beams 4 are close to each other, the motor can be controlled by the laser generator 11 to cut off the power of the motor. At the same time, the brake pad is controlled to brake the rotating wheel 13. In actual application, when the motor is cut off, the brake pad at the rotating wheel 13 will be in working state. The circuit connection structure is a mature technical means in the electrical field and will not be described in detail here.

[0036] In addition, an audible and visual alarm connected to the laser generator 11 can be installed on the beam 4. When the two beams 4 are close to each other, the audible and visual alarm can be activated by the laser generator 11 to remind the staff and control the motor and other components.

[0037] In order to prevent the two beams 4 from colliding with each other, buffers 12 are installed on the opposite sides of the two beams 4;

[0038] Furthermore, plug-in units are respectively installed on opposite sides of the two beams 4. Specifically, the plug-in unit on one beam 4 is a rotating shaft 7, and the plug-in unit on the other beam 4 is a sleeve 8. When the two beams 4 are close to each other, the rotating shaft 7 can be inserted into the sleeve 8.

[0039] A pressure rod 19 is provided on each of the two cross beams 4. The friction force of the pressure rod 19 on the plug-in unit can prevent the plug-in unit from rotating relative to the cross beam 4. Gears 6 are installed on both sides of the bottom of the cross beam 4. A rack 3 meshing with the gear 6 is fixedly provided on the top surface of the support frame 1. Insertion rods 9 are elastically installed on both sides of the bottom of the cross beam 4. A cross plate 2 is fixedly provided on the outer side of the cross beam 4. A plurality of insertion holes 201 are evenly opened on the top surface of the cross plate 2. When the bottom end of the insertion rod 9 is inserted into the inside of the insertion hole 201, the cross beam 4 is locked with the cross plate 2. A first control component is provided on one side of the gear 6. A second control component is provided on the opposite ends of the plug-in units on the two cross beams 4. Control component, when the beam 4 moves relative to the support frame 1, the first control component can prompt the pressure rod 19 to press the plug-in unit on the beam 4, thereby preventing the plug-in unit on the beam 4 from rotating. In the process of one of the beams 4 approaching the beam 4 in a stationary state on the support frame 1, the second control component on the beam 4 in a stationary state can prompt the plug-in rod 9 on the beam 4 to pop out and cooperate with the socket 201 on the cross plate 2, so as to lock the beam 4 in a stationary state on the cross plate 2. Through this structure, when the two beams 4 collide, the beam 4 originally stationary on the support frame 1 will not move, thereby making the construction operation safer.

[0040] like Figure 1-Figure 10 As shown, the first control assembly and the second control assembly both include a turntable 5 and a top block 501 on the outer peripheral surface of the turntable 5. The top blocks 501 are arranged in a plurality and are evenly distributed on the outer side of the turntable 5 in a ring array. The top blocks 501 are fan-shaped as a whole and are elastically matched with the turntable 5.

[0041] The rotating disk 5 located at the gear 6 can rotate synchronously with the gear 6, while the rotating disk 5 located at the end of the plug-in unit is fixedly matched with the plug-in unit.

[0042] Reference Figure 3 , Figure 5-Figure 10 As shown, the cross beam 4 is provided with a first electromagnet 25 at the pressure rod 19, and the bottom end of the pressure rod 19 passes downward through the first electromagnet 25 and is integrally formed with a stopper 1901, which is made of iron. Figure 6As shown, a hanging plate 17 is provided on one side of the gear 6, and the hanging plate 17 is fixedly arranged on the bottom surface of the beam 4, and a connecting shaft 18 is fixedly assembled on the gear 6, and the connecting shaft 18 passes through the hanging plate 17 and is rotatably connected thereto, and the above-mentioned turntable 5 is located on the side of the hanging plate 17 away from the gear 6 and is fixedly sleeved on the connecting shaft 18, and a first pressing plate 16 is slidably provided on the side of the hanging plate 17 away from the gear 6 and at an upper position, and the first pressing plate 16 can move in the vertical direction relative to the hanging plate 17, and a first switch 15 matching with the first pressing plate 16 is provided at the bottom of the beam 4, and the first switch 15 is located The first pressure plate 16 is above the first electromagnet 25 and is electrically connected to the first electromagnet 25. In actual use, when the crossbeam 4 moves relative to the support frame 1, the engagement of the gear 6 and the rack 3 can drive the gear 6 and the turntable 5 on one side of the gear 6 to rotate synchronously, and the top block 501 on the outside of the turntable 5 can be thrown outward under the action of centrifugal force and squeeze the first pressure plate 16 to move upward. When the first pressure plate 16 squeezes the first switch 15, the first electromagnet 25 can be controlled to be in an energized state through the first switch 15, and the suction force of the first electromagnet 25 on the stopper 1901 can drive the pressure rod 19 to move upward and press the plug-in unit.

[0043] Similarly, a second pressure plate 21 is provided at the turntable 5 at one end of the plug-in unit, and a second switch 22 is installed on the side of the second pressure plate 21 away from the turntable 5 on the beam 4. A second electromagnet 24 is provided on the beam 4, and the second switch 22 is electrically connected to the second electromagnet 24. In actual use, when the plug-in unit rotates relative to the beam 4, the plug-in unit can drive the turntable 5 at one end thereof to rotate, thereby causing the top block 501 outside the turntable 5 to be thrown out and trigger the second switch 22 through the second pressure plate 21, so that the second electromagnet 24 is in a powered state. Figure 7 As shown, the top end of the insertion rod 9 passes through the second electromagnet 24 upward and is integrally formed with a stop block 901, which is made of iron. When the second electromagnet 24 is energized, the suction force of the second electromagnet 24 on the stop block 901 can drive the insertion rod 9 to move downward, thereby prompting the bottom end of the insertion rod 9 to be inserted into the socket 201.

[0044] Reference Figure 4-Figure 7 As shown, a limit block 14 is elastically installed on the inner wall of the sleeve 8, and a limit groove 701 matching with the limit block 14 is opened on the outer peripheral surface of the rotating shaft 7. The limit groove 701 is set in a spiral shape. Figure 7As shown, a horizontal straight groove 703 is provided on the outer circumferential surface of the rotating shaft 7, and the straight groove 703 is located at the end of the limiting groove 701 away from the beam 4 and is connected to the limiting groove 701. The end of the straight groove 703 away from the limiting groove 701 extends to the end face of the rotating shaft 7 away from the beam 4, and the end face of the rotating shaft 7 away from the beam 4 is provided with a chamfer 702. Through this structure, when one end of the rotating shaft 7 is inserted into the sleeve 8, the limiting block 14 will contact and squeeze the chamfer 702 on the end face of the rotating shaft 7, thereby prompting the limiting block 14 to shrink into the sleeve 8, and when the limiting block 14 coincides with the limiting groove 701, the limiting block 14 can pop out and be inserted into the limiting groove 701, and through the provided straight groove 703, the limiting block 14 can be moved out of the limiting groove 701.

[0045] Here Figure 1 The working principle of the present invention is described in the following example, with the right beam 4 being stationary and the left beam 4 being moving: when the left beam 4 approaches the right beam 4, the laser sensor on the left beam 4 can cause the motor on the left beam 4 to be powered off and brake the rotating wheel 13 through the brake pad, thereby preventing the two beams 4 from colliding with each other;

[0046] When the brake pads are worn or the rotating wheel 13 slips on the track, the braking distance of the beam 4 will increase, especially when the rotating wheel 13 slips on the track, the risk of collision between the two tracks will be greatly increased. In the present scheme, when the rotating wheel 13 of the left beam 4 does not stop in time during the braking process, the left beam 4 will be close to the right beam 4, so that the sleeve 8 is sleeved on the outside of the rotating shaft 7. When the limit block 14 on the inner wall of the sleeve 8 is aligned with the limit groove 701, the limit block 14 will pop out and insert into the limit groove 701, so that the limit block 14 slides along the limit groove 701. Since the left beam 4 is moving relative to the support frame 1, the gear 6 under the left beam 4 can mesh with the rack 3 and cause the turntable 5 on one side of the gear 6 to rotate. Under the action of centrifugal force, the top block 501 on the outer side of the turntable 5 will be thrown out and squeeze the first switch 15 under the left beam 4, so that the first electromagnet 2 5 is in the energized state, and the suction force of the first electromagnet 25 on the stopper 1901 can cause the pressure rod 19 to press the sleeve 8, so as to prevent the sleeve 8 from rotating. Therefore, in the process of sleeve 8 being sleeved on the outer side of the rotating shaft 7, the cooperation between the limit block 14 and the limit groove 701 can drive the rotating shaft 7 to rotate, and the rotating shaft 7 can drive the turntable 5 at the end of the rotating shaft 7 to rotate, so that the top block 501 on the outer side of the turntable 5 is thrown out and squeezes the second switch 22 through the second pressure plate 21, so that the second electromagnet 24 is in the energized state, and the suction force of the second electromagnet 24 on the stopper 901 can drive the insertion rod 9 to move downward and insert into the insertion hole 201, so as to lock the right side beam 4 on the cross plate 2. At this time, even if the left side beam 4 is not stopped in time and hits the right side beam 4, the right side beam 4 can remain stationary relative to the support frame 1, so as to prevent the goods suspended under the right side beam 4 from shaking;

[0047] When the motor on the left crossbeam 4 drives the left crossbeam 4 away from the right crossbeam 4, the gear 6 under the left crossbeam 4 will mesh with the rack 3 again. According to the above analysis, at this time, the sleeve 8 on the left crossbeam 4 is still pressed by the pressure rod 19 to prevent rotation, so that in the process of the left crossbeam 4 moving away from the right crossbeam 4, the sleeve 8 can still drive the rotating shaft 7 and the turntable 5 at one end of the rotating shaft 7 to rotate, so that the top block 501 on the turntable 5 at the end of the rotating shaft 7 is thrown out again and the second switch 22 is squeezed again by the second pressure plate 21, so that the second electromagnet 24 is in a de-energized state, which is conducive to the insertion rod 9 of the right crossbeam 4 to reset upward and disengage from the socket 201.

[0048] In addition to the above-mentioned scenario where one beam 4 is stationary and the other beam 4 is moving, in actual use, the two beams 4 may also approach each other at the same time. The following explanation is made for this situation: when the two beams 4 approach each other synchronously, since the two beams 4 are in a moving state relative to the support frame 1, at this time, although the pressure rod 19 is pressed tightly on the rotating shaft 7 and the sleeve 8, when the two beams 4 are close to each other, the force between the rotating shaft 7 and the sleeve 8 is greater than the friction force of the pressure rod 19 on the sleeve 8 and the rotating shaft 7, so that when the rotating shaft 7 is inserted into the sleeve 8, the rotating shaft 7 and the sleeve 8 can rotate relative to the beam 4. Since the rotating shaft 7 and the sleeve 8 can rotate at the same time, the rotation speed of the rotating shaft 7 and the sleeve 8 relative to the beam 4 will be reduced. For the convenience of comparison, the right side is When the crossbeam 4 is stationary and the left crossbeam 4 approaches the right crossbeam 4, the speed at which the sleeve 8 drives the shaft 7 to rotate is recorded as V1. When the two crossbeams 4 are approaching each other at the same time, the rotation speed of the sleeve 8 and the shaft 7 is recorded as V2. From the above analysis, it can be seen that V2 is smaller than V1. Therefore, when the two crossbeams 4 move and approach each other at the same time, the rotation of the turntable 5 driven by the shaft 7 and the sleeve 8 is not enough to drive the second pressure plate 21 to press the second switch 22, thereby preventing the insertion rod 9 on the two crossbeams 4 from popping out and being inserted into the socket 201. On the one hand, it avoids the large force between the insertion rod 9 and the cross plate 2 caused by the sudden insertion of the insertion rod 9 into the socket 201. On the other hand, it also avoids the swing of goods caused by the sudden stop of the crossbeam 4.

[0049] In summary, this device cooperates with the rotating shaft 7 and the sleeve 8 through the arrangement. When a single beam 4 moves and approaches another beam 4, the beam 4 in a stationary state can be locked with the cross plate 2, thereby preventing the two beams 4 from colliding and moving on the support frame 1. When the two beams 4 move simultaneously and approach each other, the insertion rod 9 will not be inserted into the insertion hole 201, thereby preventing the goods from swaying due to the sudden stop of the two beams 4.

[0050] like Figure 1 As shown, the support frame 1 is configured to be U-shaped, and baffles are fixedly provided at both ends of the track. Of course, elastic limiting components can also be installed inside the baffles to prevent the crossbeam 4 from hitting the baffles.

[0051] Reference Figure 5 As shown, a groove which is slidably matched with the limit block 14 is formed on the inner wall of the sleeve 8, and a first spring is fixedly arranged between the inner end surface of the groove and the limit block 14.

[0052] Reference Figure 6 As shown, since the top block 501 is arranged in a fan shape and there are multiple top blocks 501 distributed therein, when the turntable 5 throws out the top block 501 , there is always at least one top block 501 at the bottom of the first pressure plate 16 , thereby ensuring the stability of the state of the first pressure plate 16 .

[0053] Reference Figure 7-Figure 8 As shown, a first stepped hole is opened on one side of the beam 4, one end of the rotating shaft 7 and the sleeve 8 both extend into the first stepped hole and rotatably cooperate with the beam 4 through the bearing, and the turntable 5 at the end of the plug-in unit is rotatably set in the first stepped hole, the second switch 22 is installed on the inner wall of the first stepped hole, and a limit spring is fixedly arranged between the second pressure plate 21 and the inner wall of the first stepped hole.

[0054] A second stepped hole is provided on the cross beam 4, the top end of the insertion rod 9 extends into the second stepped hole, and the stop block 901 is slidably set in the second stepped hole. The second electromagnet 24 is fixedly installed at the bottom end of the second stepped hole, and a support spring is provided between the second electromagnet 24 and the stop block 901.

[0055] The cross beam 4 is provided with a third step hole which slides with the pressure rod 19 and the stop portion 1901. The third step hole is connected with the first step hole. The first electromagnet 25 is fixedly arranged on the top wall inside the third step hole, and a spring is fixedly arranged between the first electromagnet 25 and the stop portion 1901.

[0056] A pressure head 20 is fixedly disposed at the top of the pressure rod 19 . The pressure head 20 may be made of rubber material to increase the friction between the pressure rod 19 and the rotating shaft 7 and the sleeve 8 .

[0057] Reference Fig. 9 As shown, the hanging plate 17 is provided with a slide groove 1701, and a slider 26 slidably matched with the slide groove 1701 is fixedly provided on the first pressing plate 16, and a vertical rod is fixedly provided in the slide groove 1701, and the vertical rod passes through the slider 26 and slidably matches with it.

[0058] Reference Fig.10 As shown, a groove that slides with the top block 501 is opened on the outer circumferential surface of the turntable 5, and a T-slot is opened on the inner end surface of the groove. A connecting rod 502 that slides with the T-slot is fixedly arranged on the top block 501, and a second spring is sleeved on the outer side of the connecting rod 502. The second spring is located between the inner end surface of the T-slot and the end surface of the connecting rod 502. Through this structure, the elastic fit between the top block 501 and the turntable 5 can be achieved.

[0059] like Fig.11As shown, the buffer 12 includes a slide rod 1201 and a sleeve 1202 slidably mounted on the outside of the slide rod 1201. The slide rod 1201 is fixedly mounted on one side of the two beams 4 that are opposite to each other. A plunger is fixedly mounted on one end of the slide rod 1201 that extends into the sleeve 1202. The plunger is sealed with the sleeve 1202, and a third spring is arranged between the plunger and the inner end surface of the sleeve 1202. A through guide hole 23 is provided on the outer peripheral surface of the sleeve 1202, which is beneficial for discharging the gas in the sleeve 1202. Through this structure, when the two beams 4 collide, the cooperation between the slide rod 1201 and the sleeve 1202 can achieve a buffering effect.

Claims

1. A crane anti-collision device, comprising two supporting frames arranged opposite to each other, with a crossbeam slidably arranged on the top of the supporting frames, characterized in that: The two beams are respectively provided with plug-in units on the opposite sides thereof, and the two beams are provided with pressure rods matched with the plug-in units, gears are installed on both sides of the bottom of the beams, and a rack meshing with the gears is fixedly provided on the top surface of the support frame; Insertion rods are elastically installed on both sides of the bottom of the cross beam, a cross plate is fixedly arranged on the outside of the cross beam, and a plurality of insertion holes are evenly opened on the top surface of the cross plate. A first control component is arranged on one side of the gear, and a second control component is arranged on the opposite ends of the plug-in units on the two cross beams; When the crossbeam moves relative to the support frame, the first control component can cause the pressure rod to press the plug-in unit on the crossbeam; When one of the beams approaches the beam in a stationary state on the support frame, the second control component on the beam in a stationary state can cause the insertion rod on the beam to pop out and insert into the insertion hole.

2. A crane anti-collision device according to claim 1, characterized in that: The plug-in unit on one of the crossbeams is a rotating shaft, and the plug-in unit on the other crossbeam is a sleeve. When the two crossbeams are close to each other, the rotating shaft can be inserted into the sleeve.

3. A crane anti-collision device according to claim 2, characterized in that: The first control component and the second control component both include a turntable and a top block at the outer circumference of the turntable. The number of the top blocks is set to be multiple and is evenly distributed in a ring shape on the outer side of the turntable. The top block is fan-shaped as a whole and elastically cooperates with the turntable. The turntable located at the gear can rotate synchronously with the gear, and the turntable located at the end of the plug-in unit is fixedly cooperated with the plug-in unit.

4. A crane anti-collision device according to claim 3, characterized in that: A first electromagnet is arranged on the cross beam at the pressure rod, and a stopper is arranged at the bottom end of the pressure rod passing downward through the first electromagnet, and the stopper is made of iron. A first pressure plate is arranged above the turntable on one side of the gear, and the first pressure plate can move in the vertical direction relative to the cross beam. A first switch is arranged above the first pressure plate, and the first switch is installed at the bottom surface of the cross beam, and the first switch is electrically connected to the first electromagnet.

5. The anti-collision device for a crane according to claim 4, characterized in that: A second pressure plate is provided at the turntable at one end of the plug-in unit, and a second switch is installed on the side of the second pressure plate away from the turntable on the beam. A second electromagnet is provided on the beam, and the second switch is electrically connected to the second electromagnet. The top end of the insertion rod passes through the second electromagnet upward and is provided with a stop block, which is made of iron.

6. The anti-collision device for a crane according to claim 5, characterized in that: A limit block is elastically installed on the inner wall of the sleeve, and a limit groove matching the limit block is opened on the outer circumference of the rotating shaft, and the limit groove is arranged in a spiral shape. A horizontal straight groove is opened on the outer circumference of the rotating shaft, and the straight groove is located at the end of the limit groove away from the cross beam and is connected with the limit groove. The end of the straight groove away from the limit groove extends to the end face of the rotating shaft away from the cross beam, and the end face of the rotating shaft away from the cross beam is provided with a chamfer.

7. The anti-collision device for a crane according to claim 1, characterized in that: A pressure head is fixedly arranged on the top end of the pressure rod, and the pressure head is made of rubber material.

8. The anti-collision device for a crane according to claim 3, characterized in that: The outer peripheral surface of the rotating disk is provided with a notch which is slidably matched with the top block.

9. The anti-collision device for a crane according to claim 1, characterized in that: Buffers are installed on the opposite sides of the two beams.

10. The anti-collision device for a crane according to claim 1, characterized in that: Rotating wheels are installed on both sides of the bottom of the cross beam, and a horizontal axis is fixedly set at the center position of the rotating wheel, so that the rotating wheel can rotate with the cross beam through the horizontal axis, and a track that matches the rotating wheel is fixedly set on the support frame. A motor is installed on the cross beam at the rotating wheel, and the output shaft of the motor is in transmission cooperation with the horizontal axis on the rotating wheel. A brake pad is set at the rotating wheel.

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