A safety mechanism for preventing goods from colliding

Abstract

The present invention relates to a safety mechanism for preventing goods from colliding, belonging to the technical field of ship logistics safety equipment. The safety mechanism is arranged on the side of the goods transportation passage and includes a goods receiver at the lowest position, a pull rod, a return spring, a mechanical brake and an electronic inductor; a pull rod is vertically arranged on the goods receiver at the lowest position, a mechanical brake is arranged at the top end of the pull rod, and a return spring is sleeved on the pull rod; an electronic inductor for sensing the position change of the pull rod is arranged on the pull rod. The present invention uses the self-weight of the goods as a power source to realize a series of mechanism actions, and these mechanism actions act on electrical components, hydraulic components and other mechanical parts respectively, and finally realize the triple safety interlock protection of electricity, hydraulics and machinery; it solves the problem of avoiding the collision of two goods or workpieces, especially some special goods and workpieces, during the ship logistics transportation process and / or on the production line, and avoiding damage to the goods and workpieces and other safety problems.

Description

Technical Field

[0001] The present invention relates to a safety mechanism for preventing goods from colliding, belonging to the technical field of ship logistics safety equipment. Background Art

[0002] In storage logistics transfer equipment and product production assembly lines, the conveying processes of goods or workpieces are diverse and complex, usually including compound movements with multiple degrees of freedom such as horizontal, vertical, and rotational. At the same time, in order to ensure the transfer speed of goods and the production rhythm of the assembly line, the entire goods transfer process and the operation of the assembly line are continuous. On land, since there are no restrictions on the installation, operation, and maintenance operation space, the entire transfer process and each station of the assembly line can basically be designed to be open, and the actions of each actuator are clear at a glance. When a failure occurs, manual intervention and emergency shutdown can be used in a timely manner to prevent accidents. However, on a ship logistics conveyor line, due to the narrow space, it is difficult to meet the requirements of function, operation, and maintenance space at the same time. For example, if goods need to be transported from the superstructure deck of the hull to the cabin below the waterline, the goods transport passage needs to pass through multiple decks. Since the goods passage is required to be a fully enclosed structure, it is difficult for personnel to observe the entire transport process, and only electrical control systems and mechanical interlock protection mechanisms can be used to avoid accidents and prevent damage to goods and equipment. Especially when transporting some special materials such as ammunition and other dangerous goods, such safety interlock protection measures are even more important. Electrical and mechanical double protection is required at some key positions, and electrical, hydraulic, and mechanical triple protection is required at more critical positions. Such safety interlock protection mechanisms are required to be simple and have high effectiveness, reliability, and maintainability, and the defects of these mechanisms should not affect the efficiency, safety, and reliability of the entire logistics transportation. Summary of the Invention

[0003] The object of the present invention is to solve the technical problem of how to avoid goods from colliding when transporting goods in a closed transport passage from top to bottom on a ship.

[0004] To achieve the above object, the technical solution adopted by the present invention is to provide a safety mechanism for preventing goods from colliding, which is arranged on the side of the goods transport passage and includes the lowest goods receiver, a pull rod, a return spring, a mechanical brake, and an electronic sensor; a pull rod is vertically arranged on the lowest goods receiver perpendicular to the horizontal plane, a mechanical brake is arranged at the top of the pull rod, and a return spring is sleeved on the pull rod; an electronic sensor for sensing the position change of the pull rod is arranged on the pull rod.

[0005] Preferably, the goods receiver is set as a goods support rod or a tray.

[0006] Preferably, two parallel pull rods perpendicular to the horizontal plane are arranged at both ends of the goods receiver, and the pull rods are arranged parallel to the side of the goods transport passage.

[0007] Preferably, the mechanical brake includes a swing arm, a stop seat, and a stop block; a stop seat is provided above the top end of the pull rod, the stop seat is fixed to the side of the goods transportation channel, a chute parallel to the horizontal plane is provided on the stop seat, and a stop block that slides back and forth is provided in the chute; the top end of the pull rod is movably connected to one end of the stop block through a swing arm.

[0008] Preferably, the swing arm is L-shaped, one end of the swing arm is connected to the top end of the pull rod, and the other end of the swing arm is connected to one end of the stop block; the other end of the stop block passes through the chute of the stop seat.

[0009] Preferably, a return spring is sleeved on the outer periphery of the pull rod, and one end of a bracket sleeved on the pull rod is provided at the lower end of the return spring; the other end of the bracket is fixed to the side of the goods transportation channel.

[0010] Preferably, return springs are sleeved on both of the pull rods, and the positions and structures of the two return springs are symmetrically arranged left and right.

[0011] Preferably, a switch induction piece is provided on the pull rod above one of the return springs, and a proximity switch corresponding to the switch induction piece is fixedly provided on the side of the goods transportation channel; the switch induction piece is provided above the proximity switch.

[0012] Preferably, a stroke slide valve induction block is provided on the pull rod above the other return spring, and a stroke slide valve corresponding to the stroke slide valve induction block is fixedly provided on the side of the goods transportation channel; the stroke slide valve induction block is provided above the stroke slide valve.

[0013] Preferably, a plurality of brackets are further provided on the pull rod, and the number of brackets is greater than or equal to 2.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In view of the requirements for the safety interlock mechanism on the ship's logistics conveyor line, which requires a relatively simple structure and special requirements such as high effectiveness, reliability, and maintainability. Through simple mechanical actions, triple protection of electricity, hydraulics, and machinery on the logistics conveyor line and the product assembly line can be achieved simultaneously, solving the problem of preventing two goods or workpieces, especially some special goods and workpieces, from colliding during the logistics transportation process and / or on the assembly line, which may cause damage to the goods and workpieces and other safety issues. The present invention uses the weight of the goods themselves as the power source. Through the rotating arm, the downward movement of the pull rod is converted into the horizontal movement of the stop block. The horizontal reciprocating movement of the stop block completes the entry or exit of the stop block into the goods passage. The stop block can jam the goods conveyor line such as a chain in the goods passage to achieve mechanical stop protection. At the same time, a switch is set within the stroke range of the up and down movement of the pull rod to send a shutdown signal to the electrical control system to achieve electrical protection. If the conveyor line is driven by a hydraulic system, a stroke slide valve can also be set within the stroke range of the up and down movement of the pull rod. By opening / closing the stroke slide valve, the conveyor line is shut down to achieve the interlock protection of the hydraulic system.

[0016] The key of the present invention lies in cleverly using the weight of the goods themselves as the power source, without the need to add an additional power source to achieve triple protection of electricity, hydraulics, and machinery. This protection covers the entire process of logistics. In particular, the action rhythm of this mechanism can be consistent with the rhythm of the logistics conveyor line. During the logistics transportation and product production assembly line operations, corresponding safety protection measures need to be set for each good and each workstation. Using the goods themselves as the power source simplifies the mechanism design and improves the reliability and maintainability. The present invention can be applied to the transportation of shipboard goods, especially some special goods such as ammunition, which can improve the safety of the entire logistics equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 are the front view and side view of the present invention under normal conditions;

[0018] Wherein, Figure A is the front view and Figure B is the side view.

[0019] Figure 2 are the front view and side view of the present invention when it plays a safety protection role;

[0020] Wherein, Figure A is the front view and Figure B is the side view.

[0021] Reference numerals: 1. Goods support rod / tray; 2. Bracket; 3. Return spring; 4. Pull rod; 5. Rotating arm; 6. Stop seat; 7. Stop block; 8. Switch induction piece; 9. Stroke slide valve induction block; 10. Goods; 11. Proximity switch; 12. Stroke slide valve; 13. Chain collision block. DETAILED DESCRIPTION OF THE INVENTION

[0022] To make the present invention more obvious and understandable, the following is a detailed description with preferred embodiments and in conjunction with the accompanying drawings:

[0023] As Figure 1-2 shown, the technical solution adopted by the present invention is to provide a safety mechanism for preventing goods from colliding, which is arranged on the side of the goods transportation passage and includes the lowest goods receiver, a pull rod 4, a return spring 3, a mechanical brake and an electronic sensor; a pull rod 4 is vertically arranged on the lowest goods receiver perpendicular to the horizontal plane, a mechanical brake is arranged at the top of the pull rod 4, and a return spring 3 is sleeved on the pull rod 4; an electronic sensor for sensing the position change of the pull rod 4 is arranged on the pull rod 4. The goods receiver is set as a goods support rod or a tray 1. Two parallel pull rods 4 perpendicular to the horizontal plane are arranged at both ends of the goods receiver, and the pull rods 4 are arranged parallel to the side of the goods transportation passage. The mechanical brake includes a swing arm 5, a stop seat 6 and a stop block 7; a stop seat 6 is arranged above the top of the pull rod 4, the stop seat 6 is fixed on the side of the goods transportation passage, a chute parallel to the horizontal plane is arranged on the stop seat 6, and a stop block 7 that slides back and forth is arranged in the chute; the top of the pull rod 4 is movably connected to one end of the stop block 7 through a swing arm 5. The swing arm 5 is set as an L shape, one end of the swing arm 5 is connected to the top of the pull rod 4, and the other end of the swing arm 5 is connected to one end of the stop block 7; the other end of the stop block 7 passes through the chute of the stop seat 6. A return spring 3 is sleeved on the outer periphery of the pull rod 4, and one end of a bracket 2 sleeved on the pull rod is arranged at the lower end of the return spring 3; the other end of the bracket 2 is fixed on the side of the goods transportation passage. Return springs 3 are sleeved on both pull rods 4, and the positions and structures of the two return springs 3 are set in a left-right symmetric structural form. A switch sensing piece 8 is arranged on the pull rod above one return spring 3, and a proximity switch 11 corresponding to the switch sensing piece 8 is fixed on the side of the goods transportation passage; the switch sensing piece 8 is arranged above the proximity switch 11. A stroke slide valve sensing block 9 is arranged on the pull rod above the other return spring 3, and a stroke slide valve 12 corresponding to the stroke slide valve sensing block 9 is fixed on the side of the goods transportation passage; the stroke slide valve sensing block 9 is arranged above the stroke slide valve 12. A plurality of brackets 2 are also arranged on the pull rod 4, and the number of brackets 2 is greater than or equal to 2.

[0024] Embodiment

[0025] The present invention provides a safety mechanism for preventing goods from colliding. By using the weight of the goods 10 to drive the actions of the pull rod, spring, swing arm and stop block, electrical, hydraulic and mechanical triple protection can be achieved to prevent accidents of goods 10 from colliding.

[0026] To achieve the above object, the technical solution of the present invention is to provide a safety mechanism for preventing goods from colliding, including a goods support rod / plate 1, a bracket 2, a return spring 3, a pull rod 4, a swing arm 5, a stop seat 6, a stop block 7, a switch sensing piece 8, and a stroke slide valve sensing block 9. Among them, the return spring 3, the pull rod 4, the swing arm 5, the stop block 7, the bracket 2, and the stop seat 6 are symmetrically arranged. The support rod / plate 1 is hinged to the lower end of the pull rod 4. The pull rod 4 passes through the through hole on the bracket 2. A return spring 3 is installed on the pull rod 4. The return spring 3 is located above the bracket 2. One end of the swing arm 5 is connected to the upper end of the pull rod 4 through a pin shaft. The other end of the swing arm 5 is connected to the stop block 7. The stop block 7 can slide back and forth in the square groove / circular groove of the stop seat 6. The switch sensing piece 8 and the stroke slide valve sensing block 9 are fixed on the pull rod 4 through nuts, located above the return spring 3, and can move up and down with the pull rod 4. The switch is triggered by the switch sensing piece 8 to provide a shutdown signal for the electrical control system. The stroke slide valve sensing block 9 triggers the stroke slide valve 12 to act, cutting off the oil source of the corresponding hydraulic actuator, so that the actuator stops working. If the above switch and the stroke slide valve 12 fail to shut down and cut off the oil source in time, and the logistics conveyor line continues to run, the stop block 7 can mechanically jam the logistics conveyor line, forcing the conveyor line to stop. To achieve the last mechanical protection.

[0027] The goods bracket 2, the stop seat 6, the switch 11, and the stroke slide valve 12 can be connected or welded to the fixed structure in the goods running channel through bolts.

[0028] As Figures 1 to 2 shown, a safety mechanism for preventing goods from colliding includes a goods support rod / plate 1, a bracket 2, a return spring 3, a pull rod 4, a swing arm 5, a stop seat 6, a stop block 7, a switch sensing piece 8, and a stroke slide valve sensing block 9.

[0029] Four brackets 2 and two stop seats 6 are respectively symmetrically installed on both sides of the goods channel. Two pull rods 4 are respectively connected to the support rod / plate 1 through joints. The pull rods pass through the through holes on the brackets 2. Return springs 3 are installed on the two pull rods 4. The two return springs 3 are located above the two brackets 2. The switch sensing piece 8 and the stroke slide valve sensing block 9 are located above the return springs 3. One end of the two swing arms 5 is connected to the upper end of the pull rod 4 through a pin shaft. The other end of the swing arm 5 is connected to the stop block 7. The stop block 7 can slide back and forth in the square groove / circular groove of the stop seat 6.

[0030] Under normal circumstances (as Figure 1 shown), the two stop blocks 7 are in the retracted position, the two return springs 3 are in the released state, the support rod / plate 1 is in the normal state, and the switch and the stroke slide valve are in the released position;

[0031] When the goods 10 are conveyed from top to bottom, the first goods 10 reach the position of the support rod / plate 1 (as Figure 2As shown, the weight of the goods 10 exerts a downward force on the support rod / tray 1. The support rod / tray 1 drives the pull rod 4 to move downward through the hinge joint. The downward movement of the pull rod 4 drives the swing arm 5 to rotate, while compressing the return spring 3. During the rotation of the swing arm 5, the stop block 7 is pushed out and enters the chain channel, which can jam the striker 13 on the chain and prevent the chain from continuing to move downward, thus preventing the second goods 10 from continuing to be conveyed downward and avoiding the accident of two goods 10 colliding with each other. When the pull rod 4 moves downward, the switch sensing piece 8 and the stroke slide valve sensing block 9 also move downward with the pull rod 4. The proximity switch 11 and the stroke slide valve 12 act to send a stop signal to the electrical control system and the hydraulic control system, completing the electrical and hydraulic interlock protection. When the goods 10 on the support rod / tray 1 are transferred, under the action of the elastic force of the return spring 3, the pull rod 4 moves upward, driving the switch sensing piece 8 and the stroke slide valve sensing block 9 to release the proximity switch 11 and the stroke slide valve 12, and at the same time driving the swing arm 5 to reset the stop block 7 (as Figure 1 shown).

[0032] To improve the conveying speed and efficiency of the goods, the conveyor line is usually designed to operate continuously. Such a safety mechanism for preventing goods from colliding is provided on the conveyor line, using the own weight of the goods as the power source for the movement of the mechanism. The movement rhythm of the mechanism is consistent with the conveying rhythm of the goods, which can prevent the accident of two goods colliding with each other when the goods are conveyed to the support rod / tray part and for various reasons, the goods cannot be normally transferred away.

[0033] On a ship, it is often necessary to complete the vertical transportation of goods between the cargo hold and the superstructure deck, including vertical upward and downward transportation. An electric motor is used to drive the chain to carry the rod / tray in a circular motion to complete the vertical downward and upward transportation of goods. Considering safety, the entire cargo transportation channel is designed as a closed channel. When transporting goods downward, the goods enter the cargo channel from the cargo entrance on the superstructure deck and run along the continuously moving chain to carry the rod / tray to the exit part of the cargo hold. Under normal circumstances, the goods should be removed from the exit part according to the rhythm requirements of each part of the transportation line. Usually, due to switch signal failures or incorrect operations by operators, the goods are not taken out or transferred in time, and the continuously moving chain to carry the rod / tray transports the next cargo vertically downward to the exit position of the cargo hold. If no electrical, mechanical, or hydraulic protection is set here, an accident of two goods colliding will occur. If a safety mechanism to prevent goods from colliding is set at the exit part of the cargo hold, this accident can be avoided. The safety mechanism to prevent goods from colliding simultaneously triggers the action of switch 11, the action of stroke slide valve 12, and the action of stop block 7. Switch 11 sends a signal, and the electrical control system should stop the operation of the transportation line. This is electrical protection. The stroke slide valve 12 cuts off the working oil circuit of the oil transportation line to stop the operation of the transportation line. This is hydraulic protection. If the above electrical and hydraulic protections both fail and the transportation line still fails to stop working, the stop block 7 can mechanically jam the transportation line to achieve mechanical braking and force the transportation line to stop. This is mechanical protection. If the goods are removed from the exit position of the cargo hold according to the normal process requirements, the safety mechanism to prevent goods from colliding does not work and does not affect the normal operation of the entire cargo transportation line. For the transportation of special goods such as ammunition, triple protection of electricity, hydraulics, and machinery can be achieved through this mechanism.

[0034] The present invention uses the self-weight of the goods as the power source to realize a series of mechanism actions, and these mechanism actions act on electrical components, hydraulic components, and other mechanical parts respectively, and finally realize the triple safety interlock protection of electricity, hydraulics, and machinery.

[0035] As described above, it is only the preferred embodiment of the present invention and does not impose any formal or substantial limitations on the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the premise of the present invention, several improvements and supplements can still be made, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any equivalent changes, such as slight modifications, decorations, and evolutions made by those skilled in the art who are familiar with this specialty without departing from the spirit and scope of the present invention by using the technical content disclosed above, are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the substantial technology of the present invention still fall within the scope of the technical solutions of the present invention.

Claims

1. A safety mechanism for preventing goods from colliding, characterized in that: It is arranged on the side of the goods transportation channel and includes the lowest goods receiver, a pull rod, a return spring, a mechanical brake, and an electronic inductor; a pull rod is vertically arranged on the lowest goods receiver perpendicular to the horizontal plane, a mechanical brake is arranged at the top of the pull rod, and a return spring is sleeved on the pull rod; an electronic inductor for sensing the position change of the pull rod is arranged on the pull rod; The mechanical brake includes a swing arm, a stop seat, and a stop block; a stop seat is arranged above the top of the pull rod, the stop seat is fixed to the side of the goods transportation channel, a chute parallel to the horizontal plane is arranged on the stop seat, the chute is a square groove or a circular groove, and a stop block that slides back and forth is arranged in the chute; the top of the pull rod is movably connected to one end of the stop block through a swing arm; the swing arm is set as an L shape, one end of the swing arm is connected to the top of the pull rod, and the other end of the swing arm is connected to one end of the stop block; the other end of the stop block passes through the chute of the stop seat, and the swing arm can drive the stop block to slide in the chute of the stop seat and extend out to jam the collision block on the chain in the chain channel under the action of the pull rod, realizing mechanical protection; There are two pull rods, return springs are sleeved on both pull rods, the positions and structures of the two return springs are set in a left-right symmetric structure form, a switch induction piece is arranged on the pull rod above one return spring, and a proximity switch corresponding to the switch induction piece is fixedly arranged on the side of the goods transportation channel; the switch induction piece is arranged above the proximity switch, a stroke slide valve induction block is arranged on the pull rod above the other return spring, and a stroke slide valve corresponding to the stroke slide valve induction block is fixedly arranged on the side of the goods transportation channel; the stroke slide valve induction block is arranged above the stroke slide valve, and the pull rod can drive the switch induction piece to contact the proximity switch and the stroke slide valve induction block to contact the stroke slide valve respectively, realizing electrical and hydraulic protection.

2. The safety mechanism for preventing goods from colliding according to claim 1, characterized in that: The goods receiver is set as a goods support rod or a tray.

3. The safety mechanism for preventing goods from colliding according to claim 2, characterized in that: Two parallel pull rods are vertically arranged at both ends of the goods receiver perpendicular to the horizontal plane, and the pull rods are arranged parallel to the side of the goods transportation channel.

4. The safety mechanism for preventing goods from colliding according to claim 3, characterized in that: A return spring is sleeved on the outer periphery of the pull rod, and one end of a bracket sleeved on the pull rod is arranged at the lower end of the return spring; the other end of the bracket is fixed to the side of the goods transportation channel.

5. The safety mechanism for preventing goods from colliding according to claim 4, characterized in that: Multiple brackets are also arranged on the pull rod, and the number of brackets is greater than or equal to 2.

Images