Anti-falling protection device for coal compaction mechanism

Abstract

An anti-falling protection device for a coal compaction mechanism. The two open ends of the U-shaped beam of the present invention are hinged to the column Ⅰ on one side of the structure frame, and the other end swings around the hinge shaft; both ends of the compaction roller are connected to the two side plates of the U-shaped beam; one end of the steel wire rope is wound around the winch drum, and the other end is connected to the cross plate of the U-shaped beam; a dynamometer is installed on the steel wire rope, and the control system controls the ratchet protection device according to the data transmitted by the dynamometer; the ratchet of the ratchet protection device is connected to the U-shaped beam, and the swing rod assembly is connected to the structure frame; when the value measured by the dynamometer exceeds the set safety value, the pawl of the control ratchet protection device is inserted into the tooth groove of the ratchet to prevent the compaction roller from falling; when the value measured by the dynamometer is within the safe value range, the ratchet of the ratchet protection device is separated from the pawl. The beneficial effect is that it can effectively prevent the compaction roller from falling from a height caused by problems with the steel wire rope in real time, eliminate potential safety hazards, and ensure the safety of coal compaction operations.

Description

Technical Field

[0001] The present invention relates to a coal compaction mechanism, in particular to a fall protection device for a coal compaction mechanism, belonging to the technical field of coal transportation. Background Art

[0002] The coal compaction mechanism is a device for leveling and compacting the coal in the train carriage. After the coal in the carriage is leveled and compacted by this device, it can meet the requirements of long-distance railway transportation and solve the problem of transportation shortfall in trade. In the coal compaction mechanism, a hydraulic winch or an electric hoist is a common traction form for lifting and lowering the compaction roller, and the compaction roller is lifted and lowered by winding and unwinding the steel wire rope. During the lifting and lowering process, the steel wire rope bears the full weight of the compaction roller. Once the steel wire rope shows a broken strand phenomenon, the heavy object falling from a high place will hurt people or objects below, resulting in a safety accident, which is a hidden danger to safe production. Summary of the Invention

[0003] In order to overcome the deficiency that once the steel wire rope of the existing coal compaction mechanism shows a broken strand phenomenon, the compaction roller falling from a high place will hurt people or objects below, resulting in a safety accident and there being a hidden danger to safe production, the present invention provides a fall protection device for a coal compaction mechanism.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a fall protection device for a coal compaction mechanism, including a structural frame, a winch, a compaction roller, and a control system. A winch is fixedly installed on the upper cross beam of the structural frame. The two open ends of the U-shaped beam are hinged to the column Ⅰ on one side of the structural frame, and the other end swings around the hinge shaft; both ends of the compaction roller are connected to the two side plates of the U-shaped beam; one end of the steel wire rope is wound around the winch drum, and the other end is connected to the cross plate of the U-shaped beam.

[0005] A dynamometer is installed on the steel wire rope, and the control system controls the ratchet protection device according to the data transmitted by the dynamometer; the ratchet of the ratchet protection device is connected to the U-shaped beam, and the swing rod assembly is connected to the structural frame.

[0006] When the value measured by the dynamometer exceeds the set safety value, the pawl of the ratchet protection device is inserted into the tooth groove of the ratchet to prevent the compaction roller from falling; when the value measured by the dynamometer is within the safe value range, the ratchet of the ratchet protection device is separated from the pawl.

[0007] The ratchet of the ratchet protection device is arranged in the middle of the cross plate of the U-shaped beam. One end of the ratchet is fixedly connected to the cross plate of the U-shaped beam. The middle of the ratchet is supported by the guide wheel of the guide wheel assembly, and the guide wheel assembly is fixedly installed on the upper cross beam; the center point of the ratchet is coaxial with the two hinge shafts of the U-shaped beam.

[0008] The ratchet is an outer edge ratchet with a 90° arc, and the guide wheel supports the inner edge of the ratchet, and the inner edge of the ratchet slides along the guide wheel groove.

[0009] The lower end of the bracket of the guide wheel assembly is fixedly connected to the upper cross beam, and a support is fixedly installed at the upper end of the bracket; both ends of the guide wheel shaft are installed in the shaft holes of the support.

[0010] The number of the guide wheel assemblies is more than 1; more than 2 guide wheel assemblies are arranged in sequence along the upper cross beam.

[0011] The swing rod assembly of the ratchet protection device includes a support rotating shaft, a swing rod, a return spring, and a stretching oil cylinder, and the swing rod is connected to the column II opposite to the column I.

[0012] The support rotating shaft is suspended, and the upper end of the support rotating shaft is fixedly connected to the upper cross beam.

[0013] One end of the return spring is connected to the column II, and the other end is connected to the upper end of the swing rod; the middle of the swing rod is hinged to the lower end of the support rotating shaft through a pin shaft; the ratchet pawl is arranged at the lower end of the swing rod.

[0014] The stretching oil cylinder is horizontally and fixedly installed on the side surface of the column II, and the stretching oil cylinder is located below the return spring; the front end of the piston of the stretching oil cylinder is connected to the swing rod through a soft rope.

[0015] When the compaction mechanism works safely and normally, the control system controls the piston of the stretching oil cylinder to retract, and drives the lower part of the swing rod through the soft rope, the return spring is stretched, the ratchet pawl is disengaged from the ratchet wheel, and the ratchet wheel swings with the U-shaped beam.

[0016] When the control system activates the protection function of the ratchet protection device, the control system controls the piston of the stretching oil cylinder to extend, the soft rope no longer restrains the swing rod, the swing rod swings and the return spring retracts, and the ratchet pawl at the lower end of the swing rod is inserted into the tooth groove of the ratchet wheel.

[0017] The beneficial effects of the present invention are that the structure is reasonably designed, safe and reliable, solves the problem that the conventional steel wire rope cannot be monitored and protected in real time, can effectively prevent the compaction roller from falling from a high place due to the steel wire rope problem in real time, eliminates potential safety hazards, and ensures the safety of coal compaction operations. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the protection state of the anti-falling protection device of the coal compaction mechanism of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the anti-falling protection device in the normal working state of the coal compaction mechanism of the present invention.

[0020] Figure 3 It is a top view of the U-shaped beam in the present invention.

[0021] In the figure: 1. Dynamometer, 2. Support rotating shaft, 3. Swing rod, 4. Return spring, 5. Tensile oil cylinder, 6. Soft rope, 7. Pawl, 8. Swing rod assembly, 9. Ratchet wheel, 10. U-shaped beam, 11. Side plate, 12. Cross plate, 13. Steel wire rope, 14. Hinge shaft, 20. Guide wheel assembly, 21. Guide wheel, 22. Bracket, 23. Support, 24. Guide wheel shaft, 100. Structure frame, 101. Upper cross beam, 102. Column Ⅰ, 103. Column Ⅱ, 200. Winch, 300. Compaction roller, 400. Ratchet protection device. Detailed implementation manners

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. However, those skilled in the art should know that the present invention is not limited to the specific implementation manners listed. As long as it conforms to the spirit of the present invention, it should be included within the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "left", "right", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing or simplifying the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention.

[0024] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected", "sealed" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, a direct connection, an indirect connection, or an integral connection; it can be a mechanical connection, can also be indirectly connected through an intermediate medium, and can also be the communication inside two elements. The sealing can be oil seal, packing seal or other forms of sealing. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See the attached Figures 1-3 A coal compaction mechanism anti-falling protection device of the present invention includes a structure frame 100, a winch 200, a compaction roller 300, a ratchet protection device 400 and a control system of the compaction mechanism. The structure frame is a steel structure frame or a reinforced concrete structure frame. The upper cross beam 101 of the structure frame 100 is fixedly installed with a winch 200, and the winch 200 can also be replaced by a hoist. When the winch 200 or the hoist operates, the compaction roller 300 is lifted or lowered through the steel wire rope 13.

[0026] Both open ends of the U-shaped beam 10 are hinged to the column I 102 on one side of the structural frame 100, and the other end swings around the hinge shaft 14. The two hinge shafts 14 are coaxially arranged. Both ends of the compaction roller 300 are respectively connected to the two side plates 11 of the U-shaped beam 10; one end of the steel wire rope 13 is wound around the drum of the winch 200, and the other end is connected to the cross plate of the U-shaped beam 10. The winch 200 drives the U-shaped beam 10 and its compaction roller 300 to swing through the steel wire rope 13. Preferably, a lifting ring is fixedly arranged on the cross plate of the U-shaped beam 10, and the steel wire rope 13 is connected to the lifting ring.

[0027] A dynamometer 1 is installed on the steel wire rope 13. The dynamometer 1 is connected to the control system. The control system presets a safety threshold value of the steel wire rope 13 and controls the ratchet protection device 400 according to the data transmitted by the dynamometer 1. When the value measured by the dynamometer 1 exceeds the set safety value, the control ratchet protection device 400 enters the protection mode to prevent the compaction roller 300 from falling; when the value measured by the dynamometer 1 is within the safe value range, the ratchet 9 of the ratchet protection device 400 is separated from the pawl 7, and the compaction mechanism operates normally.

[0028] The ratchet protection device 400 includes a swing rod assembly 8, a ratchet 9, and a guide wheel assembly 20; preferably, the ratchet 9 is an outer-edge ratchet with a 90° arc.

[0029] The ratchet 9 is arranged in the middle of the cross plate 12 of the U-shaped beam 10. One end of the ratchet 9 is fixedly connected to the cross plate 12 of the U-shaped beam 10 and can be fixedly connected by welding; preferably, the lower end of the ratchet 9 is fixedly connected to the cross plate 12 of the U-shaped beam 10. The center point of the ratchet 9 is coaxial with the two hinge shafts 14 of the U-shaped beam 10. The middle part of the ratchet 9 is supported by the guide wheel 21 of the guide wheel assembly 20, and the guide wheel assembly 20 is fixedly installed on the upper cross beam 101.

[0030] The guide wheel assembly 20 includes a guide wheel 21, a bracket 22, a support 23, and a guide wheel shaft 24.

[0031] The lower end of the bracket 22 is fixedly connected to the upper cross beam 101, and the upper end is fixedly installed with a support 23; both ends of the guide wheel shaft 24 are installed in the shaft holes of the support 23.

[0032] The number of the guide wheel assemblies 20 is more than 1; more than 2 guide wheel assemblies 20 are arranged in sequence along the upper cross beam 101. By adjusting the position of the guide wheel assembly 20, it is ensured that the center point of the ratchet 9 is coaxial with the two hinge shafts 14 of the U-shaped beam 10.

[0033] The guide wheel 21 supports the inner edge of the ratchet 9. A guide wheel groove is arranged on the outer circumference of the guide wheel 21, and the inner edge of the ratchet 9 is located in the guide wheel groove and slides along the guide wheel groove.

[0034] The swing rod assembly 8 is connected to the structural frame 100 and is located on the side of the column II 103 opposite to the column I 102.

[0035] The swing rod assembly 8 includes a support rotating shaft 2, a swing rod 3, a return spring 4, and a stretching oil cylinder 5. The swing rod 3 is connected to the column II 103.

[0036] Furthermore, the support rotating shaft 2 is suspended, and the upper end of the support rotating shaft 2 is fixedly connected to the lower surface of the upper cross beam 101.

[0037] Furthermore, one end of the return spring 4 is connected to the column II 103, and the other end is connected to the upper end of the swing rod 3. The middle part of the swing rod 3 is hinged to the lower end of the support rotating shaft 2 through a pin shaft. The ratchet pawl 7 is arranged at the lower end of the swing rod 3.

[0038] Furthermore, the stretching oil cylinder 5 is horizontally and fixedly installed on the side surface of the column II 103. The stretching oil cylinder 5 is located below the return spring 4. The front end of the piston of the stretching oil cylinder 5 is connected to the swing rod 3 through a soft rope 6. The length of the soft rope 6 should be in a slack state when the oil cylinder is fully extended to ensure that the return spring 4 can drive the ratchet pawl 7 at the front end of the swing rod 3 to insert into the tooth groove of the ratchet wheel 9 and enter the protection working position.

[0039] When the force data of the steel wire rope 13 measured by the dynamometer 1 is normal and the compaction mechanism works safely and normally, the control system controls the piston of the stretching oil cylinder 5 to retract, pulls the lower part of the swing rod 3 through the soft rope 6, stretches the return spring 4, the ratchet pawl 7 disengages from the ratchet wheel 9, the ratchet wheel 9 swings with the U-shaped beam 10, and the compaction mechanism performs compaction operations.

[0040] When there is a problem with the steel wire rope 13 (such as broken strands), the dynamometer 1 installed on the steel wire rope 13 measures abnormal data. The abnormal data of the dynamometer 1 is transmitted to the control system. When the abnormal data of the dynamometer 1 exceeds the preset safety threshold of the steel wire rope 13, the control system activates the protection function of the ratchet protection device 400. The control system controls the piston of the stretching oil cylinder 5 to extend, the soft rope 6 no longer restrains the swing rod 3, the swing rod 3 swings, the upper end of the swing rod 3 presses the return spring 4 to retract, and the ratchet pawl 7 at the lower end of the swing rod 3 inserts into the tooth groove of the ratchet wheel 9 to prevent the ratchet wheel 9 from swinging, and the compaction roller 300 also stops swinging accordingly, and the compaction roller 300 no longer continues to fall, avoiding the occurrence of accidents of the compaction roller 300 falling.

[0041] It should be noted that the above embodiments are examples rather than limiting the present invention, and those skilled in the art will be able to design many alternative embodiments without departing from the scope of the claims of this patent.

Claims

1. A fall protection device for a coal compaction mechanism, comprising a structural frame, a winch, a compaction roller, and a control system. A winch is fixedly installed on the upper crossbeam of the structural frame. It is characterized in that: The two open ends of the U-shaped beam are hinged to the column I on one side of the structural frame, and the other end swings around the hinge axis; both ends of the compaction roller are connected to the two side plates of the U-shaped beam; one end of the steel wire rope is wound around the winch drum, and the other end is connected to the cross plate of the U-shaped beam. A dynamometer is installed on the steel wire rope, and the control system controls the ratchet protection device according to the data transmitted by the dynamometer; the ratchet of the ratchet protection device is connected to the U-shaped beam, and the swing rod assembly is connected to the structural frame. When the value measured by the dynamometer exceeds the set safety value, the pawl of the control ratchet protection device inserts into the tooth groove of the ratchet to prevent the compaction roller from falling; when the value measured by the dynamometer is within the safety value range, the ratchet of the ratchet protection device is separated from the pawl. The ratchet of the ratchet protection device is arranged in the middle of the cross plate of the U-shaped beam. One end of the ratchet is fixedly connected to the cross plate of the U-shaped beam. The middle of the ratchet is supported by the guide wheel of the guide wheel assembly, and the guide wheel assembly is fixedly installed on the upper crossbeam; the center point of the ratchet is coaxial with the two hinge axes of the U-shaped beam. The ratchet is an outer edge ratchet with a 90° arc, and the guide wheel supports the inner edge of the ratchet. The inner edge of the ratchet slides along the guide wheel groove. The swing rod assembly of the ratchet protection device includes a support rotating shaft, a swing rod, a return spring, and a stretching oil cylinder. The swing rod is connected to the column II opposite to the column I. The support rotating shaft is suspended, and the upper end of the support rotating shaft is fixedly connected to the upper crossbeam. One end of the return spring is connected to the column II, and the other end is connected to the upper end of the swing rod; the middle of the swing rod is hinged to the lower end of the support rotating shaft through a pin shaft; the pawl is arranged at the lower end of the swing rod. The stretching oil cylinder is horizontally and fixedly installed on the side of the column II, and the stretching oil cylinder is located below the return spring; the front end of the piston of the stretching oil cylinder is connected to the swing rod through a soft rope.

2. The fall protection device for a coal compaction mechanism according to claim 1, It is characterized in that: The lower end of the bracket of the guide wheel assembly is fixedly connected to the upper crossbeam, and a support is fixedly installed at the upper end of the bracket; both ends of the guide wheel shaft are installed in the shaft holes of the support.

3. The fall protection device for a coal compaction mechanism according to claim 2, It is characterized in that: The number of the guide wheel assemblies is more than 1.

4. The fall protection device for a coal compaction mechanism according to claim 3, It is characterized in that: When there are more than 2 guide wheel assemblies, the guide wheel assemblies are arranged in sequence along the upper crossbeam.

5. The fall protection device for a coal compaction mechanism according to claim 4, It is characterized in that: When the compaction mechanism works normally and safely, the control system controls the piston of the stretching oil cylinder to retract, and drives the lower part of the swing rod through the soft rope. The return spring is stretched, and the pawl is separated from the ratchet. The ratchet swings with the U-shaped beam. When the control system activates the protection function of the ratchet protection device, the control system controls the piston of the stretching oil cylinder to extend, the soft rope no longer restrains the swing rod, the swing rod swings and the return spring retracts, and the pawl at the lower end of the swing rod inserts into the tooth groove of the ratchet.

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