Limiting anti-collision mechanism of single-beam bridge crane

Abstract

The utility model discloses a limit anti-collision mechanism of a single beam bridge crane, which relates to the technical field of cranes, and comprises a track beam and a main beam, both sides of the main beam are fixedly connected with end beams, side columns are fixedly arranged below the end beams, the side surfaces of the side columns are provided with through holes I, and the lower ends of the side columns are fixedly provided with motors I; the output end of the first motor is fixedly connected with a lead screw, the lead screw is in transmission connection with a limiting column, and a transverse moving mechanism is arranged on the main beam. Buffering fixing bases are fixedly installed on the end beams, and buffering sliding pieces are inserted into the front faces of the buffering fixing bases. According to the utility model, the side column, the motor I, the screw rod, the limiting column and the movable ball are arranged in a matched manner, so that the deviation angles of the lifting hook and a suspended heavy object during collision are limited, and the danger possibly occurring in the collision process of the lifted heavy object is avoided; and through cooperative arrangement of the buffer fixing base, the buffer sliding piece, the motor switch and the reset spring, a power supply source of collision is cut off fundamentally, and collision is prevented from occurring again.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a position limiting and anti-collision mechanism of a single-beam bridge crane. Background Art

[0002] A crane refers to a multi-action lifting machinery that can vertically lift and horizontally move heavy objects within a certain range, that is, the corresponding mechanisms of material picking, transportation, unloading and other actions work alternately in one working cycle. Cranes are developing and being used more and more widely in the market. Among them, bridge cranes are erected on tracks on both sides of buildings. Since different lifting operations need to be performed on the same track, multiple groups of cranes are required on the same track. Collisions are inevitable during simultaneous work, and a buffer structure is required to protect the cranes.

[0003] A double-control switch is a switch with two contacts (a pair) at the same time, one normally open and one normally closed. Usually two double-control switches are used to control a lamp or other electrical appliance, which means that there are two switches to control the switch of lamps and other electrical appliances, for example, turn on the switch when you are downstairs and turn off the switch when you go upstairs.

[0004] The prior art CN217867793U discloses a position limiting and anti-collision device for a single-beam bridge crane, which includes a main beam, a cross rail, an electric hoist, a hook, a slider, a pulley, and an anti-collision device. A cross rail is provided at the bottom of the main beam, and an electric hoist slidably connected thereto is provided on the cross rail. A hook is provided at the bottom of the electric hoist, and a pulley is provided at the bottom of the slider. Although the utility model provides a segmented buffer to protect the crane, the utility model does not make corresponding processing measures for the anti-collision of the hoisted heavy objects, which has defects. In addition, the utility model takes the problem of power source into consideration, and the collision problem cannot be completely solved by simply providing a buffer mechanism. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a position limiting and anti-collision mechanism for a single-beam bridge crane, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a limit and anti-collision mechanism of a single-beam bridge crane, comprising a track beam and a main beam, both sides of the main beam are fixedly connected with end beams, side columns are fixedly installed below the end beams, a through hole one is provided on the side of the side column, a motor one is fixedly installed at the lower end of the side column, a screw rod is fixedly connected to the output end of the motor one, a limit column is connected to the screw rod for transmission, a through hole two is provided on the upper surface of the limit column, a circular slide groove is provided in the through hole two, a moving ball is slidably installed in the circular slide groove, a threading hole is provided in the moving ball, a transverse moving mechanism is provided on the main beam, the transverse moving mechanism includes a steel cable, and a hook is fixedly connected to the lower end of the steel cable; a buffer fixing seat is fixedly installed on the end beam, a buffer sliding member is inserted on the front of the buffer fixing seat, rubber strips are fixedly installed on the front and back of the main beam, and rubber sheets are fixedly installed on the front and back of the side column.

[0009] Optionally, a plurality of support legs equidistantly distributed are fixedly installed below the track beam, an outrigger beam is fixedly installed on the inner sides of the two track beams, and a movable track is fixedly installed on the upper surface of the outrigger beam.

[0010] Optionally, a second motor is fixedly mounted on the upper surface of the end beam, and a pulley is transmission-connected to the output end of the second motor, the pulley abuts against and fits with the movable track, a deep groove is opened on one side of the end beam, the outrigger beam is inserted into the deep groove, and the outrigger beam can slide in the deep groove.

[0011] Optionally, the two motors 1 must be started and shut down at the same time, and the screw rods are rotatably installed in the corresponding through holes 1.

[0012] Optionally, the moving ball is adapted to the circular slide groove, and the diameter of the moving ball is greater than the width of the second through hole.

[0013] Optionally, the steel cable passes through the second through hole and the threading hole, and the hook is arranged below the limiting column.

[0014] Optionally, a plurality of thin grooves and a thick groove are formed on the front of the buffer fixing seat, and a plurality of thin inserts and a thick insert are fixedly connected to one side of the buffer sliding member, the thin inserts are inserted into the thin grooves, and the thick inserts are inserted into the thick grooves, and a return spring is fixedly installed at the bottom of the thin grooves, and one end of the return spring away from the bottom of the thin grooves is fixedly connected to the thin inserts, and a motor switch is fixedly installed at the bottom of the thick groove, the motor switch is one of the two switches of the double-control switch, and the motor switch is electrically connected to the motor through a wire, and the height of the motor switch is two-thirds of the original length of the return spring.

[0015] Optionally, the main beam is an I-beam, the transverse moving mechanism is slidably mounted on a lower crossbeam of the main beam, and the rubber strip is fixedly mounted on an upper crossbeam of the main beam.

[0016] (III) Beneficial effects

[0017] The utility model provides a limit anti-collision mechanism for a single-beam bridge crane, which has the following beneficial effects:

[0018] 1. The limit anti-collision mechanism of the single-beam bridge crane provides another limit point for the steel cable in addition to the lateral movement mechanism through the coordinated arrangement of the side column, motor 1, screw rod, limit column and moving ball, which limits the deviation angle of the hook and the suspended weight when a collision occurs, avoids the danger that may occur to the suspended weight during the collision process, and expands the target surface of limit anti-collision;

[0019] 2. The limit anti-collision mechanism of the single-beam bridge crane, through the coordinated setting of the buffer fixed seat, buffer sliding part, motor switch and reset spring, cuts off the power supply source of the impact from the root, avoids the recurrence of the impact, and utilizes the principle of double-control switch to reduce the negative impact of the impact on the crane without affecting the normal operation of the crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0022] Figure 3 It is a right side cross-sectional structural schematic diagram of the utility model;

[0023] Figure 4 It is a schematic diagram of the side cross-sectional structure of the buffer fixing seat of the utility model;

[0024] Figure 5 It is a schematic diagram of the front cross-sectional structure of the forehead buffer fixing seat of the utility model.

[0025] In the figure: 1. track beam; 2. main beam; 3. end beam; 4. side column; 5. limit column; 6. motor one; 7. rubber sheet; 8. moving ball; 9. lateral moving mechanism; 10. motor two; 11. buffer fixing seat; 12. buffer sliding member; 13. motor switch; 14. reset spring; 101. support leg; 102. extension beam; 103. moving track; 201. rubber strip; 301. deep groove; 401. through hole one; 501. through hole two; 502. circular slide groove; 601. screw rod; 801. threading hole; 901. steel cable; 902. hook; 1001. pulley; 1101. thin groove; 1102. thick groove; 1201. thin insert; 1202. thick insert. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Example 1

[0028] See also Figures 1 to 3 The utility model provides a technical solution: a limit anti-collision mechanism of a single-beam bridge crane, comprising a track beam 1 and a main beam 2, a plurality of support legs 101 equidistantly distributed are fixedly installed below the track beam 1, an outrigger beam 102 is fixedly installed on the inner side of the two track beams 1, a movable track 103 is fixedly installed on the upper surface of the outrigger beam 102, a motor 10 is fixedly installed on the upper surface of the end beam 3, a pulley 1001 is transmission-connected to the output end of the motor 10, the pulley 1001 abuts and fits with the movable track 103, a deep groove 301 is provided on one side of the end beam 3, the outrigger beam 102 is inserted into the deep groove 301, and the outrigger beam 102 can slide in the deep groove 301, both sides of the main beam 2 are fixedly connected with the end beam 3, a side column 4 is fixedly installed below the end beam 3, a through hole 1 401 is provided on the side of the side column 4, and an electric motor 10 is fixedly installed at the lower end of the side column 4 Machine 1 6, the output end of motor 1 6 is fixedly connected with a screw rod 601, and the two motors 1 6 must be started and stopped at the same time. The screw rod 601 is rotatably installed in the corresponding through hole 1 401, and the screw rod 601 is transmission-connected to the limit column 5. The upper surface of the limit column 5 is provided with a through hole 2 501, and a circular slide groove 502 is provided in the through hole 2 501. A moving ball 8 is slidably installed in the circular slide groove 502, and a threading hole 801 is provided in the moving ball 8. A transverse moving mechanism 9 is provided on the main beam 2, and the transverse moving mechanism 9 includes a steel cable 901. The lower end of the steel cable 901 is fixedly connected with a hook 902, and the moving ball 8 is adapted to the circular slide groove 502. The diameter of the moving ball 8 is larger than the width of the through hole 2 501. The steel cable 901 passes through the through hole 2 501, and the steel cable 901 passes through the threading hole 801, and the hook 902 is arranged below the limit column 5.

[0029] When in use, the moving power source of the transverse moving mechanism 9 and the hoisting mechanism of the steel cable 901 are not drawn. They are ordinary structures commonly seen in the market and are not described here. When it is necessary to lift a heavy object, the steel cable 901 is extended outward by controlling the transverse moving mechanism 9, so that the hook 902 is lowered. After the hook 902 hangs the heavy object, the rise of the heavy object is controlled by the transverse moving mechanism 9, and the movement of the main beam 2 on the track beam 1 drives the heavy object to move in the direction of the track beam 1. The circular slide groove 502 prevents the moving ball 8 from escaping from the limit column 5. When the transverse moving mechanism 9 moves in the direction of the main beam 2, the movement of the moving ball 8 in the circular slide groove 502 is used to meet the use needs. At the same time as the heavy object rises and falls, the two must be controlled The motor 6 makes the limit column 5 and the hook 902 keep in sync, and keeps the distance between the lower edge of the limit column 5 and the hook 902 small enough but not affecting the lifting. It needs to be adjusted accordingly according to the actual situation. The closer the distance is, the better the anti-collision effect is. After the collision, the heavy object continues to maintain the original moving trend under the action of inertia. If there is no limit column 5, the heavy object will deflect at a large angle, which is a great test for the strength of the steel cable 901 and may cause danger to the staff. However, under the action of the limit column 5, the inertial force is borne by the limit column 5. Under the action of the limit column 5, even if the heavy object still deflects, its stroke will be greatly weakened, which increases the safety when the collision occurs.

[0030] Example 2

[0031] See also Figure 1 to Figure 2 , Figures 4 to 5 The utility model provides a technical solution: a limit anti-collision mechanism of a single-beam bridge crane, a buffer fixing seat 11 is fixedly installed on the end beam 3, a buffer sliding member 12 is plugged into the front of the buffer fixing seat 11, a plurality of thin grooves 1101 and a thick groove 1102 are opened on the front of the buffer fixing seat 11, a plurality of thin inserts 1201 and a thick insert 1202 are fixedly connected to one side of the buffer sliding member 12, the thin insert 1201 is plugged into the thin groove 1101, the thick insert 1202 is plugged into the thick groove 1102, a reset spring 14 is fixedly installed at the bottom of the thin groove 1101, and the reset spring 14 is away from the thin groove 1 One end of the bottom of 101 is fixedly connected to the thin insert 1201, and a motor switch 13 is fixedly installed at the bottom of the thick groove 1102. This motor switch 13 is one of the two switches of the double-control switch, and the motor switch 13 is electrically connected to the motor 2 10 through a wire. The height of the motor switch 13 is two-thirds of the original length of the reset spring 14. The front and back of the main beam 2 are fixedly installed with a rubber strip 201, and the front and back of the side column 4 are fixedly installed with a rubber sheet 7. The main beam 2 is an I-beam, and the lateral moving mechanism 9 is slidably installed on the lower crossbeam of the main beam 2. The rubber strip 201 is fixedly installed on the upper crossbeam of the main beam 2.

[0032] When in use, the rubber sheet 7 and the rubber strip 201 are more protruding than the lateral moving mechanism 9 after installation, that is, after a collision occurs, the rubber sheet 7 collides with the rubber sheet 7, and the rubber strip 201 collides with the rubber strip 201, to avoid damage to the lateral moving mechanism 9 caused by the collision, the buffer sliding member 12 is flush with the rubber sheet 7 and the rubber strip 201, and the two buffer fixing seats 11 are respectively located on the front and back of the main beam 1; the existing limit anti-collision mechanism for single-beam bridge cranes is mostly based on buffering, but none of them analyzes and considers the real reasons for the collision, one is that the motor is not shut down in time due to human negligence, and the other is that the control is not effective due to mechanical failure; for situation one, the utility model is first touched by the buffer sliding member 12 after the collision. Object, under the action of impact, the thin insert 1201 and the thick insert 1202 slide in the thin groove 1101 and the thick groove 1102 respectively, the return spring 14 in the thin groove 1101 absorbs the buffering force to prevent the buffer sliding member 12 from being displaced too much and causing damage to the motor switch 13, and the thick insert 1202 triggers the motor switch 13 to stop the motor 10 and cut off the power source of the collision; for situation 2, the setting of the double-control switch is equivalent to having two independent switches for cutting off the circuit of the motor 10, which increases the safety redundancy. Compared with the two ordinary switches connected in series, the setting of the double-control switch has the advantage of flexible control, so the utility model has better innovative and practical effects; it is also desirable for the utility model to be parallel with the common anti-collision structure on the market.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A limit and anti-collision mechanism for a single-beam bridge crane, comprising a track beam and a main beam, characterized in that: The two sides of the main beam are fixedly connected with end beams, and side columns are fixedly installed under the end beams. A through hole 1 is provided on the side of the side column, and a motor 1 is fixedly installed at the lower end of the side column. A screw rod is fixedly connected to the output end of the motor 1, and a limit column is connected to the screw rod for transmission. A through hole 2 is provided on the upper surface of the limit column, and a circular slide groove is provided in the through hole 2. A moving ball is slidably installed in the circular slide groove, and a threading hole is provided in the moving ball. A transverse moving mechanism is provided on the main beam, and the transverse moving mechanism includes a steel cable, and a hook is fixedly connected to the lower end of the steel cable; a buffer fixing seat is fixedly installed on the end beam, and a buffer sliding member is inserted on the front of the buffer fixing seat, rubber strips are fixedly installed on the front and back of the main beam, and rubber sheets are fixedly installed on the front and back of the side column.

2. The position limiting and anti-collision mechanism of a single-beam bridge crane according to claim 1 is characterized in that: A plurality of support legs which are evenly distributed are fixedly installed below the track beam, an outrigger beam is fixedly installed on the inner side of the two track beams, and a movable track is fixedly installed on the upper surface of the outrigger beam.

3. The position limiting and anti-collision mechanism of a single-beam bridge crane according to claim 2 is characterized in that: A second motor is fixedly mounted on the upper surface of the end beam, and a pulley is transmission-connected to the output end of the second motor. The pulley abuts against and fits the movable track. A deep groove is opened on one side of the end beam, and the outrigger beam is inserted into the deep groove, and the outrigger beam can slide in the deep groove.

4. The position limiting and anti-collision mechanism of a single-beam bridge crane according to claim 1 is characterized in that: The two motors must be started and shut down at the same time, and the screw rods are rotatably installed in the corresponding through holes.

5. The position limiting and anti-collision mechanism of a single-beam bridge crane according to claim 1 is characterized in that: The moving ball is adapted to the circular slide groove, and the diameter of the moving ball is greater than the width of the second through hole.

6. The position limiting and anti-collision mechanism of a single-beam bridge crane according to claim 1, characterized in that: The steel cable passes through the second through hole, and the steel cable passes through the threading hole, and the hook is arranged below the limiting column.

7. The position limiting and anti-collision mechanism of a single-beam bridge crane according to claim 1, characterized in that: The front side of the buffer fixing seat is provided with a plurality of thin grooves and a thick groove, and one side of the buffer sliding member is fixedly connected with a plurality of thin inserts and a thick insert, the thin inserts are inserted into the thin grooves, and the thick inserts are inserted into the thick grooves, and a return spring is fixedly installed at the bottom of the thin grooves, and one end of the return spring away from the bottom of the thin grooves is fixedly connected to the thin inserts, and a motor switch is fixedly installed at the bottom of the thick groove, the motor switch is one of the two switches of the double-control switch, and the motor switch is electrically connected to the motor through a wire, and the height of the motor switch is two-thirds of the original length of the return spring.

8. The position limiting and anti-collision mechanism of a single-beam bridge crane according to claim 1, characterized in that: The main beam is an I-beam, the transverse moving mechanism is slidably installed on the lower cross beam of the main beam, and the rubber strip is fixedly installed on the upper cross beam of the main beam.

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