A coal cake thickness measuring device for a tamping coal loading vehicle

Abstract

The present invention is a coal cake thickness measuring device for a tamping coal loading vehicle, which relates to the field of coking coal production equipment. The device comprises a device support, a lifting seat, a tamping rod, a hammer head, a height sensor, a controller, and a first driving mechanism. The height sensor is used to collect the real-time distance between the lifting seat and the top of the coal box, and transmits it to the controller. The controller controls the feeding conveyor belt and the telescopic cylinder to operate. After the coal cake height reaches the standard, the controller is used to control the telescopic cylinder to contract, driving the axis of the hinge point of the support seat and the connecting rod to move to a position where the axis of the transmission gear disc coincides, and all the hammer heads are moved to a horizontal position, isolating the coal material above the hammer head from the tamped coal cake compacted by the hammer head below. After the coal cake height in the coal box reaches the standard, the coal material flowing out of the drop section between the feeding conveyor belt and the coal box will be retained on the hammer head, which significantly reduces the error in coal cake height measurement and improves measurement accuracy.

Description

Technical Field

[0001] The invention relates to the field of coking coal production equipment, and in particular to a coal cake thickness measuring device for a tamping coal charging vehicle. Background Art

[0002] Coking coal production is the process of mixing washed clean coal from different sources and types, tamping it into coal cakes, and then feeding it into the carbonization chamber of the coking oven for coking. Compared with raw coal, coke has significant advantages. It has a high carbon content, usually exceeding 85% or even more than 90%, and its volatile matter is reduced to 1.5%-3%. It can efficiently provide heat, act as a reducing agent, and reduce the impact of impurities. It has a regular silver-gray block appearance, which is convenient for transportation, storage, and quantitative use. It has a hard texture, high strength, wear resistance, high density, good thermal stability, and is not easy to break at high temperatures. It has good flammability and reducibility, and the combustion flame is short, concentrated, and fast, which can efficiently provide high temperature. It has a very wide range of uses and is a key material in many industries such as steel, casting, and chemical industry. It improves the reduction efficiency and molten iron quality in blast furnace ironmaking. It can also provide the necessary heat and reduction conditions in other industries, effectively promoting the development of industrial production.

[0003] The existing coal cake tamping device feeds the coal into the tamping coal box through a feeding conveyor belt, and uses a tamping mechanism to tamp the coal in the coal box. For example, patent CN208545360U discloses a tamping residual coal collection and return device, which discloses setting a feeding belt conveyor on the upper part of the vehicle-mounted coal hopper and using the feeding belt conveyor to load the coal hopper, and patent CN108034440A discloses a coal cake height control device and method, which discloses detecting the coal cake height through a detection device, and controlling the feeding device to stop feeding into the coal box after the height reaches the standard. Due to the height difference between the feeding belt conveyor and the coal box, after the coal cake height reaches the standard and the feeding belt conveyor stops, the coal flowing out of the drop section between the feeding belt conveyor and the coal box will still enter the coal box, thereby increasing the error in the coal cake height measurement and affecting the measurement accuracy. Summary of the Invention

[0004] The present invention aims to overcome the problem that due to the height difference between the feeding belt and the coal box, after the coal cake height reaches the standard and the feeding belt stops, the coal flowing out of the drop section between the feeding belt and the coal box will still enter the coal box, thereby increasing the error in the measurement of the coal cake height and affecting the measurement accuracy. The purpose of the present invention is to provide a coal cake thickness measuring device for a tamping coal loading car.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0006] A device for measuring the thickness of coal cakes for a tamping coal-charging vehicle is used on the tamping coal-charging vehicle. The tamping coal-charging vehicle is provided with a coal box into which coal is fed from the upper portion of the coal box by a feeding conveyor belt. The device comprises: a device bracket, a lifting seat, a tamping rod, a hammer head, a height sensor, a controller, and a first drive mechanism.

[0007] The device bracket is fixed on the tamping coal charging car, and a lifting seat is slidably installed on the device bracket. A plurality of transmission gear discs are installed on the lifting seat, and each transmission gear disc is corresponding to a tamping rod. The transmission gear disc is driven to rotate by a first driving mechanism, and a mounting groove is provided on the transmission gear disc along the radial direction. A support seat is slidably installed in the mounting groove. A telescopic cylinder is installed on the transmission gear disc, and the output end of the telescopic cylinder is connected to the support seat. The support seat is connected to one end of a connecting rod by a hinge, and the other end of the connecting rod is hinged to the tamping rod. The tamping rod is slidably installed on the lifting seat, and a hammer head is fixed at the lower end of the tamping rod.

[0008] The hammer heads connected to two adjacent tamping rods are in contact with each other, and a material guide channel is formed between the contact surface and the bottom of the hammer heads. The height sensor is arranged on the lifting seat and detects the real-time distance between the lifting seat and the top of the coal box. After receiving the height sensor signal and analyzing and processing it, the controller outputs a control signal to the feeding conveyor belt and the control end of the telescopic cylinder to operate.

[0009] Furthermore, of the two adjacent hammer heads, one of the hammer heads is provided with a dovetail groove on its side, and the other hammer head is provided with a trapezoidal block on its side, the trapezoidal block is located in the dovetail groove, and the material guide channel runs through the trapezoidal block and the dovetail groove on the side of the hammer head.

[0010] Furthermore, the first driving mechanism includes a transmission shaft, a transmission bevel gear, a driving motor, a driving shaft, and a connecting shaft. The transmission shaft is rotatably mounted on the lifting seat, the transmission bevel gear is mounted on the transmission shaft, the driving shaft is rotatably mounted on the lifting seat, the driving motor drives the driving shaft to rotate, a worm gear is provided at the shaft end of the transmission shaft, and the worm gear and the driving shaft form a worm gear mechanism. There are multiple connecting shafts, which are coaxially mounted in parallel on the lifting seat, and each connecting shaft is connected to a corresponding transmission gear plate, and the transmission gear plate engages with the transmission bevel gear.

[0011] Furthermore, a vertical section is provided at the lower part of the material guide channel, and the bottom of the vertical section is in a trumpet shape. A supporting top rod is installed in the vertical section, and a sealing block that matches the trumpet shape of the bottom of the vertical section is fixed at the lower end of the supporting top rod. The supporting top rod passes through the vertical section, and the upper end is slidably installed on the hammer head.

[0012] Furthermore, a lifting slide is fixedly installed on the device bracket, the lifting slide is located on the upper part of the coal box, the lifting seat is slidably installed on the lifting slide, and is driven to lift and lower by a second driving mechanism, the second driving mechanism includes a lifting rack, a lifting gear plate, and a lifting motor, the lifting rack is located inside the lifting slide, the lifting rack is installed on the lifting seat, the lifting gear plate is rotatably installed on the device bracket, the lifting gear plate engages the lifting rack, and the lifting motor drives the lifting gear plate to rotate.

[0013] Furthermore, floating grooves are respectively provided on both sides of the lifting seat, and the lifting rack is slidably installed in the floating grooves. A limiting groove is provided on the lifting seat, and a limiting splint is slidably installed in the limiting groove. The limiting splint is provided with an anti-slip strip on the side of the limiting splint close to the tamping rod, and a tension spring is provided between the limiting splint and the limiting groove. Push screws are slidably installed at both ends of the lifting seat, one end of the pushing screw is inserted into the limiting groove and is connected to a push block, and an upper portion of the limiting splint is provided with an oblique surface corresponding to the push block, and the other end of the pushing screw is limited by a threaded ring. The limiting gear is rotatably installed on the side of the lifting seat, and the limiting gear engages with the lifting rack.

[0014] Furthermore, the hammer heads are arranged in pairs and adjacent to each other, and an upper and lower friction wheels are respectively installed on the side surface of one side of the dovetail groove on one hammer head and on the side surface of the trapezoidal block on the other hammer head, and the side surface of the friction wheel on the trapezoidal block and the side surface of the friction wheel on the dovetail groove are non-coplanar, and the friction wheels on the same side are connected to the same friction shaft, and a linkage cavity is provided inside the hammer head, and a linkage mechanism is installed inside the linkage cavity, and the linkage mechanism includes a one-way ratchet assembly that works alternately, and a support sleeve is rotatably installed on the hammer head, and a shift plate is provided in an annular array on the outer ring side of the upper end portion of the support sleeve, and a driven gear ring is installed at the lower end of the support sleeve, and the friction shaft drives the driven gear ring to rotate through the linkage mechanism.

[0015] Furthermore, the linkage mechanism includes a driven shaft, a linkage shaft, a first one-way ratchet, a second one-way ratchet, a first transmission gear ring, a second transmission gear ring, an intermediate shaft, an intermediate wheel, a first transmission wheel, and a second transmission wheel. The first one-way ratchet and the second one-way ratchet are respectively installed on the linkage shaft, one end of the linkage shaft is connected to the friction shaft through gear meshing, the locking directions of the first one-way ratchet and the second one-way ratchet are opposite, the outer ring of the first one-way ratchet has a first transmission gear ring, the outer ring of the second one-way ratchet has a second transmission gear ring, the first transmission gear ring meshes with the first transmission wheel, the first transmission wheel is fixedly installed on the driven shaft, the second transmission gear ring meshes with the intermediate wheel, the intermediate wheel is rotatably installed on the intermediate shaft, the intermediate shaft is fixedly installed in the transmission cavity, the intermediate wheel meshes with the second transmission wheel, and the second transmission wheel is fixedly installed on the driven shaft.

[0016] Furthermore, a hollow cavity is provided inside the tamping rod, an exhaust hole communicating with the internal hollow cavity is provided on the upper side wall of the tamping rod, and the lower end of the hollow cavity is communicated with the material guide channel.

[0017] The beneficial effects of the present invention are:

[0018] 1. Use the height sensor to collect the real-time distance between the lifting seat and the top of the coal box and transmit it to the controller. The controller controls the feeding conveyor belt and the telescopic cylinder. After the coal cake height reaches the standard, the controller controls the telescopic cylinder to retract, driving the axis of the hinge point of the support seat and the connecting rod to move to the position where the axis of the transmission gear plate coincides, moving all the hammer heads to a horizontal position, isolating the coal above the hammer heads from the compacted coal cakes below the hammer heads. After the coal cake height in the coal box reaches the standard, the coal flowing out of the drop section between the feeding conveyor belt and the coal box will be retained on the hammer heads, significantly reducing the error in coal cake height measurement and improving measurement accuracy.

[0019] 2. The second driving mechanism is used to drive the lifting seat, tamping rod and hammer head to move together. When the hammer head tends to a horizontal position, the second driving mechanism is lifted and the lifting seat is released. The hammer head at the same level can compact the briquettes again, reducing the height difference of the upper layer of the briquettes. Furthermore, the second driving mechanism moves to separate the hammer head from the upper layer of the briquettes, making it easier to unload the briquettes.

[0020] 3. A rotating dial plate is provided on the upper part of the hammer head. The rotation of the dial plate can push the coal material on the upper part of the hammer head into the material guide channel, which is conducive to the coal material on the upper part of the hammer head moving to the lower part of the hammer head. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the installation of the lifting seat of the present invention;

[0023] Figure 3 This is a schematic diagram of the installation of the lifting rack of the present invention;

[0024] Figure 4 It is a schematic diagram of the hammer structure of the present invention;

[0025] Figure 5 A top view of the lifting seat of the present invention;

[0026] Figure 6 It is a cross-sectional view of the hammer head of the present invention;

[0027] Figure 7 This is a schematic diagram of the installation of the limiting splint of the present invention;

[0028] Figure 8 This is a schematic diagram of the hammer head connection of the present invention;

[0029] Figure 9 Schematic diagram of the linkage mechanism of the present invention.

[0030] In the figure: 1. Tamping coal-charging car; 2. Coal box; 3. Device bracket; 12. Lifting seat; 13. Tamping rod; 14. Hammer; 15. Height sensor; 16. Controller; 17. First drive mechanism; 18. Transmission gear plate; 21. Mounting slot; 22. Support seat; 23. Telescopic cylinder; 24. Connecting rod; 25. Material guide channel; 31. Dovetail groove; 32. Trapezoidal block; 41. Transmission shaft; 42. Transmission bevel gear; 43. Drive motor; 44. Drive shaft; 45. Connecting shaft; 46. Worm gear; 51. Vertical section; 52. Supporting top rod; 53. Sealing block; 61. Lifting slide; 62. Lifting rack; 63. Lifting gear plate; 64. Lifting motor; 65 , floating groove; 66, second driving mechanism; 71, limiting groove; 72, limiting splint; 73, anti-slip strip; 74, tension spring; 75, push screw; 76, push block; 77, beveled surface; 78, limiting gear; 81, friction wheel; 82, friction shaft; 83, linkage cavity; 84, linkage mechanism; 85, supporting sleeve; 86, shift plate; 87, driven gear ring; 88, driven shaft; 89, linkage shaft; 91, first one-way ratchet; 92, second one-way ratchet; 93, first transmission gear ring; 94, second transmission gear ring; 95, intermediate shaft; 96, intermediate wheel; 97, first transmission wheel; 98, second transmission wheel; 99, hollow cavity; 100, exhaust hole. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0032] Example 1:

[0033] like Figure 1-4 As shown, a briquette thickness measuring device for a tamping coal-charging vehicle 1 is applied to the tamping coal-charging vehicle 1. The tamping coal-charging vehicle 1 is provided with a coal box 2, into which coal is fed from the upper portion of the coal box 2 by a feeding conveyor belt. The device comprises: a device bracket 3, a lifting seat 12, a tamping rod 13, a hammer head 14, a height sensor 15, a controller 16, and a first drive mechanism 17.

[0034] The device bracket 3 is fixed on the tamping coal charging car 1, and a lifting seat 12 is slidably installed on the device bracket 3. A plurality of transmission gear discs 18 are installed on the lifting seat 12. Each transmission gear disc 18 corresponds to a tamping rod 13. The transmission gear disc 18 is driven to rotate by the first driving mechanism 17. A mounting groove 21 is provided on the transmission gear disc 18 along the radial direction. A support seat 22 is slidably installed in the mounting groove 21. A telescopic cylinder 23 is installed on the transmission gear disc 18. The output end of the telescopic cylinder 23 is connected to the support seat 22. The support seat 22 is connected to one end of a connecting rod 24 through a hinge. The other end of the connecting rod 24 is hinged to the tamping rod 13. The tamping rod 13 is slidably installed on the lifting seat 12. The lower end of the tamping rod 13 is fixed with a hammer head 14.

[0035] The hammer heads 14 connected to two adjacent tamping rods 13 are in contact, forming a material guide channel 25 between the contact surface and the bottom of the hammer heads 14. The height sensor 15 is installed on the lifting seat 12 and detects the real-time distance between the lifting seat 12 and the top of the coal box 2. The controller 16 receives the signal from the height sensor 15, analyzes it, and outputs a control signal to the feed conveyor belt and the control end of the telescopic cylinder 23 to operate.

[0036] By setting the hammer heads 14 in contact, the coal fed into the coal box 2 by the feeding conveyor belt falls directly onto the upper part of the hammer heads 14;

[0037] When the coal box 2 is feeding, the telescopic cylinder pushes out the movement to the maximum stroke, and moves the support seat 22 along the mounting groove 21 to an eccentric position with the transmission gear disc 18. As the first driving mechanism 17 drives the transmission gear disc 18 to rotate, the transmission gear disc 18 drives the support seat 22 to rotate around the axis of the transmission gear disc 18. When the support seat 22 rotates, the connecting rod 24 hinged thereon forms a crank-connecting rod 24 mechanism. As the transmission gear disc 18 rotates, the connecting rod 24 pulls the tamping rod 13 to do a reciprocating lifting and lowering movement. When the tamping rod 13 rises, it drives the hammer head 14 to rise. When the telescopic cylinder is extended, due to the different heights of the support seat 22 on each transmission gear disc 18, the displacement difference of the tamping rod 13 corresponding to the connecting rod 24 on the two adjacent transmission gear discs 18 is generated, so that the two tamping rods 13 drive the two hammer heads 14 to move, so that the two hammer heads 14 are moved. The two hammer heads 14 are dislocated, and as the two hammer heads 14 are dislocated, the guide channel 25 end on the side of the hammer head 14 with the higher position moves to the upper part of the adjacent hammer head 14, and the coal material on the upper part of the hammer head 14 can enter the guide channel 25 and fall from the guide channel 25 to the lower part of the hammer head 14. Then, as the transmission gear plate 18 rotates, the two adjacent hammer heads 14 alternately rise and fall to complete the tamping operation of the coal material. As the coal material enters the lower part of the hammer head 14, the thickness of the coal seam under the hammer head 14 increases. During the rising and falling process, the hammer head 14 will also drive the lifting seat 12 to move upward as a whole as the thickness of the coal seam increases. The height sensor 15 on the lifting seat 12 collects and detects the distance information between the lifting seat 12 and the top of the coal box 2 in real time, and transmits it to the controller 16. The controller 16 compares the collected distance information with the set threshold value.

[0038] When the set threshold is reached, the controller 16 outputs a control instruction to the control end of the feeding conveyor belt to control the feeding conveyor belt to stop working, and at the same time outputs a control signal to the control end of the telescopic cylinder to control the telescopic cylinder to shrink. After the telescopic cylinder shrinks, it drives the support seat 22 to move, and moves the axis of the hinge point of the support seat 22 and the connecting rod 24 to the position where the axis of the transmission gear plate 18 coincides. At this time, the rotation of the transmission gear plate 18 cannot drive the connecting rod 24 to deflect, and all the connecting rods 24 on the transmission gear plate 18 tend to move under the action of their own gravity and the tamping rod 13. In a coaxial state with the tamping rod 13, all the hammer heads 14 are moved to a horizontal position. At this time, there is no relative drop between the hammer heads 14, and the port of the material guide channel 25 on the side of the hammer head 14 will not be exposed to the outside. The coal material on the upper part of the hammer head 14 can be isolated from the tamped coal cake compacted by the lower part of the hammer head 14. After the coal cake height in the coal box 2 meets the standard, the coal material flowing out of the drop section between the feeding conveyor belt and the coal box 2 will be retained on the hammer head 14, which reduces the error of coal cake height measurement and improves measurement accuracy.

[0039] Example 2:

[0040] On the basis of Example 1, Figure 1-7As shown, two adjacent hammer heads 14 are provided with a dovetail groove 31 on the side of one hammer head 14, and a trapezoidal block 32 is provided on the side of the other hammer head 14. The trapezoidal block 32 is located in the dovetail groove 31, and the material guide channel 25 passes through the trapezoidal block 32 and the dovetail groove 31 on the side of the hammer head 14. The two adjacent hammer heads 14 are connected by the cooperation of the trapezoidal block 32 and the dovetail groove 31, thereby reducing the amplitude of the two hammer heads 14 shaking when they are lifted up and down;

[0041] The first driving mechanism 17 includes a transmission shaft 41, a transmission bevel gear 42, a driving motor 43, a driving shaft 44, and a connecting shaft 45. The transmission shaft 41 is rotatably mounted on the lifting base 12, the transmission bevel gear 42 is mounted on the transmission shaft 41, and the driving shaft 44 is rotatably mounted on the lifting base 12. The driving motor 43 drives the driving shaft 44 to rotate. A worm gear 46 is provided at the shaft end of the transmission shaft 41. The worm gear 46 and the driving shaft 44 form a worm gear 46-worm mechanism. There are multiple connecting shafts 45, which are coaxially mounted in parallel on the lifting base 12. Each connecting shaft 45 is connected to a corresponding transmission gear plate 18. The transmission gear plate 18 engages with the transmission bevel gear 42. The driving motor 43 drives the driving shaft 44 to rotate. The rotation of the driving shaft 44 drives the turbine to rotate, and then drives the transmission shaft 41 to rotate. The rotation of the transmission shaft 41 drives the transmission bevel gear 42 to rotate. The transmission bevel gear 42 drives the transmission gear plate 18 to rotate. The transmission gear plate 18 rotates through the support base 22 and the connecting rod 24, driving the tamping rod 13 to move up and down.

[0042] The guide channel 25 is provided with a vertical section 51 at the bottom, and the bottom of the vertical section 51 is in the shape of a trumpet. A supporting rod 52 is installed in the vertical section 51. The lower end of the supporting rod 52 is fixed with a sealing block 53 that matches the trumpet shape at the bottom of the vertical section 51. The supporting rod 52 passes through the vertical section 51, and the upper end is slidably installed on the hammer head 14. When the hammer head 14 rises, the supporting rod 52 and the sealing block 53 will move downward due to their own gravity, so that the sealing block 53 is separated from the trumpet at the bottom of the vertical section 51. At this time, the guide channel The coal in 25 can fall from the bell mouth to the lower part of the hammer head 14. When the hammer head 14 moves downward to the upper part of the coal cake, the sealing block 53 contacts the upper surface of the coal cake in advance. Supported by the coal cake, the sealing block 53 moves upward to block the bell mouth. After the hammer head 14 completely falls, the applied pressure is transmitted through the sealing block 53, which can also compact the coal at the bottom of the sealing block 53. As a result, multiple hammer heads 14 and the sealing blocks 53 thereon can completely cover all positions on the inner plane of the coal box 2, reducing the phenomenon of uneven compaction.

[0043] A lifting slide 61 is fixedly installed on the device bracket 3. The lifting slide 61 is located on the upper part of the coal box 2. The lifting seat 12 is slidably installed on the lifting slide 61 and is driven to rise and fall by the second driving mechanism 66. The second driving mechanism 66 includes a lifting rack 62, a lifting gear disc 63, and a lifting motor 64. The lifting rack 62 is located inside the lifting slide 61. The lifting rack 62 is installed on the lifting seat 12. The lifting gear disc 63 is rotatably installed on the device bracket 3. The lifting gear disc 63 engages with the lifting rack 62. The lifting motor 64 drives the lifting gear disc 63 to rotate. The lifting gear disc 63 drives the lifting rack 62 to move, thereby driving the lifting seat 12 to move upward along the lifting slide 61, and the lifting seat 12, the tamping rod 13 and the hammer head 14 to move upward as a whole, separating the hammer head 14 from the coal cakes in the coal box 2;

[0044] Floating grooves 65 are provided on both sides of the lifting seat 12, and the lifting rack 62 is slidably installed in the floating grooves 65. A limiting groove 71 is provided on the lifting seat 12, and a limiting splint 72 is slidably installed in the limiting groove 71. The limiting splint 72 is provided with an anti-slip strip 73 on the side close to the tamping rod 13. A tension spring 74 is provided between the limiting splint 72 and the limiting groove 71. Push screws 75 are slidably installed at both ends of the lifting seat 12. One end of the pushing screw 75 is inserted into the limiting groove 71 and connected to a push block 76. The upper part of the limiting splint 72 is provided with an oblique surface 77 corresponding to the push block 76. The other end of the pushing screw 75 is provided with a limiting gear 78 through a threaded ring. The limiting gear 78 is rotatably installed on the side of the lifting seat 12, and the limiting gear 78 engages the lifting rack 62;

[0045] During the feeding stage of the coal box 2, the lifting motor 64 does not work, and the lifting gear disc 63 does not exert force on the lifting rack 62. At this time, the lifting rack 62 is located at the bottom of the floating groove 65 under the action of its own gravity. When the coal cakes in the coal box 2 reach the set height, the controller 16 controls the lifting motor 64 to work, driving the lifting gear disc 63 to rotate. The rotation of the lifting gear disc 63 drives the lifting rack 62 to move upward in the floating groove 65. At this time, the lifting rack 62 moves upward, while the lifting seat 12 remains stationary. As the lifting rack 62 moves, it drives the limit gear 78 to rotate. The positioning gear 78 drives the pushing screw 75 to rotate, and the pushing screw 75 pushes the pushing block 76 to squeeze the beveled surface 77 on the limiting clamping plate 72, pushing the limiting clamping plate 72 to the side of the tamping rod 13. The anti-slip strip 73 on the limiting clamping plate 72 contacts the tamping rod 13, thereby limiting the vertical displacement of the tamping rod 13 and achieving the positioning of the tamping rod 13. When the lifting rack 62 moves to the uppermost end of the floating groove 65, the lifting toothed disc 63 continues to push the lifting rack 62 to move, thereby pushing the lifting seat 12 to move upward, thereby driving the hammer head 14 to separate from the coal cakes in the coal box 2;

[0046] When the lifting base 12 descends, the lifting base 12 and the tamping rod 13 and hammer head 14 thereon move downward under the action of gravity, while the lifting rack 62 remains at the uppermost end of the floating groove 65 due to the resistance of the lifting toothed disc 63. At this time, the lifting rack 62 does not move relative to the lifting base 12 and does not drive the limit gear 78 to rotate. Therefore, the push screw 75 pushes the push block 76 to always exert a thrust on the limit clamping plate 72, and the limit clamping plate 72 maintains the clamping state of the tamping rod 13.

[0047] When the lifting seat 12 falls to the bottom, the lifting rack 62 maintains its original downward movement under the action of inertia and its own gravity. At this time, the lifting rack 62 moves in the floating groove 65, and is displaced relative to the lifting seat 12. The movement of the lifting rack 62 drives the limit gear 78 to rotate, which in turn drives the push screw 75 to rotate, pulling the push block 76 to the chamfered surface 77 on the limit clamp 72. The limit clamp 72 is separated from the tamping rod 13 under the action of the tension spring 74. At this time, the tamping rod 13 can slide freely on the lifting seat 12 again.

[0048] When the controller 16 determines that the thickness of the coal cakes in the coal box 2 meets the standard based on the collected height information, it controls the telescopic cylinder 23 to retract, so that the hammer head 14 tends to the same horizontal height position, and the lifting seat 12 is driven upward by the second driving mechanism 66, thereby driving the lifting seat 12, the tamping rod 13, and the hammer head 14 to move upward as a whole. When the lifting seat 12 moves to the highest point, the second driving mechanism 66 stops working. Without the driving force, the lifting seat 12, the tamping rod 13, and the hammer head 14 move upward under the action of gravity. It freely falls into the coal box 2. Since all the hammer heads 14 tend to a horizontal position at this time, after falling, they can perform an overall squeezing operation on the upper end surface of the coal cake in the coal box 2 to optimize the flatness of the upper end surface of the coal cake. During the falling process of the lifting seat 12, the tamping rod 13 is clamped by the limiting splint 72. When the tamping rod 13 is subjected to axial impact, the clamping of the tamping rod 13 by the limiting splint 72 can buffer the impact force and reduce the impact force on the connecting rod 24 and the transmission gear disc 18.

[0049] Example 3:

[0050] On the basis of Example 1, Figure 1-9As shown, the hammer heads 14 are arranged in pairs and adjacent to each other. An upper and lower friction wheel 81 is installed on the side surface of the dovetail groove 31 on one hammer head 14 and on the side surface of the trapezoidal block 32 on the other hammer head 14. The side surface of the friction wheel 81 provided on the trapezoidal block 32 is non-coplanar with the side surface of the friction wheel 81 provided on the dovetail groove 31. The friction wheels 81 on the same side are connected to the same friction shaft 82. A linkage cavity 83 is provided inside the hammer head 14, and a linkage mechanism 84 is installed inside the linkage cavity 83. A support sleeve 85 is rotatably installed on the hammer head 14. A dial plate 86 is provided in an annular array on the outer ring side of the upper end of the support sleeve 85. A driven gear ring 87 is installed on the lower end of the support sleeve 85. The friction shaft 82 drives the driven gear ring 87 to rotate through the linkage mechanism 84. The friction wheel 81 on each hammer head 14 contact the side of the hammer head 14 with which it is paired; when relative displacement occurs between two adjacent hammer heads 14, the friction wheel 81 on the hammer head 14 is affected by the friction force of the adjacent hammer head 14 side and rotates, the rotation of the friction wheel 81 drives the friction shaft 82 to rotate, the friction shaft 82 drives the driven gear ring 87 to rotate through the linkage mechanism 84, and then drives the support sleeve 85 to rotate, pushing the paddle 86 to move on the upper part of the hammer head. When the paddle moves, it can push the coal material on the upper part of the hammer head 14 to move, and can push the coal material on the upper part of the hammer head 14 to the side of the hammer head 14. When the two adjacent hammer heads 14 are misaligned and the end of the guide channel 25 is exposed, the coal material is pushed into the guide channel 25;

[0051] The linkage mechanism 84 includes a driven shaft 88, a linkage shaft 89, a first one-way ratchet 91, a second one-way ratchet 92, a first transmission gear ring 93, a second transmission gear ring 94, an intermediate shaft 95, an intermediate wheel 96, a first transmission wheel 97, and a second transmission wheel 98. The first one-way ratchet 91 and the second one-way ratchet 92 are respectively mounted on the linkage shaft 89. One end of the linkage shaft 89 is connected to the friction shaft 82 through gear meshing. The locking directions of the first one-way ratchet 91 and the second one-way ratchet 92 are opposite. The outer ring of the first one-way ratchet 91 has a first transmission gear ring 93, and the outer ring of the second one-way ratchet 92 has a second transmission gear ring 94. The first transmission gear ring 93 meshes with the first transmission wheel 97. The first transmission wheel 97 is fixedly mounted on the driven shaft 88. The second transmission gear ring 94 meshes with the intermediate wheel 96. The intermediate wheel 96 is rotatably mounted in the intermediate On the shaft 95, the intermediate shaft 95 is fixedly installed in the linkage cavity 83, the intermediate wheel 96 meshes with the second transmission wheel 98, and the second transmission wheel 98 is fixedly installed on the driven shaft 88. By setting the first one-way ratchet 91 and the second one-way ratchet 92 with opposite locking directions, no matter whether the linkage shaft 89 rotates forward or reversed, only one of the first one-way ratchet 91 and the second one-way ratchet 92 can provide transmission output to the outside, and the intermediate wheel 96 meshes with the second transmission gear ring 94 on the second one-way ratchet 92 to change the rotation direction, so that the linkage shaft 89 will drive the driven shaft 88 to rotate in one direction regardless of whether it rotates forward or reverse. As a result, the relative displacement between adjacent hammer heads 14, whether it is rising or falling, the support sleeve 85 drives the paddle 86 to rotate only in one direction, avoiding the coal material from moving toward the middle of the hammer head 14 due to reverse rotation;

[0052] When the hammer head 14 rises or falls, the space between the hammer head 14 and the upper part of the coal cake in the coal box 2 is constantly changing. The pressure change caused by the space change will produce resistance to the movement of the hammer head 14. A hollow cavity 99 is provided inside the tamping rod 13, and an exhaust hole 100 is provided on the upper side wall of the tamping rod 13 to communicate with the internal hollow cavity 99. The lower end of the hollow cavity 99 is connected to the material guide channel 25; the hollow cavity 99 and the exhaust hole 100 are used to connect the material guide channel 25. When the hammer head 14 moves, the airflow at the bottom of the hammer head 14 can be exchanged with the outside world through the hollow cavity 99 and the exhaust hole 100, thereby reducing the resistance to the movement of the hammer head 14.

[0053] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A briquette thickness measuring device for a tamping coal-charging vehicle, which is applied to a tamping coal-charging vehicle having a coal box, into which coal is fed from the upper portion of the coal box by a feeding conveyor belt; characterized in that: include: Device bracket, lifting seat, tamping rod, hammer head, height sensor, controller, first drive mechanism; The device bracket is fixed on the tamping coal charging car, and a lifting seat is slidably installed on the device bracket. A plurality of transmission gear discs are installed on the lifting seat, and each transmission gear disc is corresponding to a tamping rod. The transmission gear disc is driven to rotate by a first driving mechanism, and a mounting groove is provided on the transmission gear disc along the radial direction. A support seat is slidably installed in the mounting groove. A telescopic cylinder is installed on the transmission gear disc, and the output end of the telescopic cylinder is connected to the support seat. The support seat is connected to one end of a connecting rod by a hinge, and the other end of the connecting rod is hinged to the tamping rod. The tamping rod is slidably installed on the lifting seat, and a hammer head is fixed at the lower end of the tamping rod. The hammer heads connected to two adjacent tamping rods are in contact, and a material guide channel is formed between the contact surface and the bottom of the hammer heads. The height sensor is installed on the lifting seat and detects the real-time distance between the lifting seat and the top of the coal box. The controller receives the height sensor signal, analyzes and processes it, and outputs a control signal to the feeding conveyor belt and the control end of the telescopic cylinder to operate; Two adjacent hammer heads, one of which is provided with a dovetail groove on its side, and the other is provided with a trapezoidal block on its side, the trapezoidal block is located in the dovetail groove, and the material guide channel runs through the trapezoidal block and the dovetail groove on the side of the hammer head, and the two adjacent hammer heads are connected by the cooperation of the trapezoidal block and the dovetail groove; The hammer heads are arranged in pairs and adjacent to each other. An upper and lower friction wheel are respectively installed on the side surface of one side of the dovetail groove of one hammer head and on the side surface of the trapezoidal block on the other hammer head. The side surface of the friction wheel on the trapezoidal block and the side surface of the friction wheel on the dovetail groove are non-coplanar. The friction wheels on the same side are connected to the same friction shaft. A linkage cavity is provided inside the hammer head, and a linkage mechanism is installed inside the linkage cavity. A support sleeve is rotatably installed on the hammer head, and a paddle is provided in an annular array on the outer ring side of the upper end of the support sleeve. A driven gear ring is installed on the lower end of the support sleeve. The friction shaft drives the driven gear ring to rotate through the linkage mechanism. The friction wheel on each hammer head contacts the side surface of the hammer head with which it is paired.

2. The briquettes thickness measuring device for a tamping coal-charging vehicle according to claim 1, characterized in that: The first driving mechanism includes a transmission shaft, a transmission bevel gear, a driving motor, a driving shaft, and a connecting shaft. The transmission shaft is rotatably mounted on the lifting seat, the transmission bevel gear is mounted on the transmission shaft, and the driving shaft is rotatably mounted on the lifting seat. The driving motor drives the driving shaft to rotate. A worm gear is provided at the shaft end of the transmission shaft. The worm gear and the driving shaft form a worm gear mechanism. There are multiple connecting shafts, which are coaxially mounted in parallel on the lifting seat. Each connecting shaft is connected to a corresponding transmission gear plate, and the transmission gear plate engages with the transmission bevel gear.

3. The briquettes thickness measuring device for a tamping coal-charging vehicle according to claim 1, characterized in that: A vertical section is provided at the lower part of the material guide channel, and the bottom of the vertical section is in a trumpet shape. A supporting top rod is installed in the vertical section, and a sealing block that matches the trumpet shape of the bottom of the vertical section is fixed at the lower end of the supporting top rod. The supporting top rod passes through the vertical section, and the upper end is slidably installed on the hammer head.

4. The briquettes thickness measuring device for a tamping coal-charging vehicle according to claim 1, characterized in that: A lifting slide is fixedly installed on the device bracket, and the lifting slide is located on the upper part of the coal box. The lifting seat is slidably installed on the lifting slide and is driven to lift by a second driving mechanism. The second driving mechanism includes a lifting rack, a lifting gear plate, and a lifting motor. The lifting rack is located inside the lifting slide, the lifting rack is installed on the lifting seat, the lifting gear plate is rotatably installed on the device bracket, the lifting gear plate engages with the lifting rack, and the lifting motor drives the lifting gear plate to rotate.

5. The briquettes thickness measuring device for a tamping coal-charging vehicle according to claim 4, characterized in that: There are floating grooves on both sides of the lifting seat, and the lifting rack is slidably installed in the floating groove. The lifting seat is provided with a limit groove, and a limit splint is slidably installed in the limit groove. The limit splint is provided with an anti-slip strip on the side of the limit splint close to the tamping rod, and a tension spring is provided between the limit splint and the limit groove. Push screws are slidably installed at both ends of the lifting seat, and one end of the push screw is inserted into the limit groove and is connected to a push block. The upper part of the limit splint is provided with a chamfered surface corresponding to the push block, and the other end of the push screw is limited by a threaded ring. The limit gear is rotatably installed on the side of the lifting seat, and the limit gear meshes with the lifting rack.

6. The briquettes thickness measuring device for a tamping coal-charging vehicle according to claim 1, characterized in that: The linkage mechanism includes a driven shaft, a linkage shaft, a first one-way ratchet, a second one-way ratchet, a first transmission gear ring, a second transmission gear ring, an intermediate shaft, an intermediate wheel, a first transmission wheel, and a second transmission wheel. The first one-way ratchet and the second one-way ratchet are respectively installed on the linkage shaft, one end of the linkage shaft is connected to the friction shaft through gear meshing, the locking directions of the first one-way ratchet and the second one-way ratchet are opposite, the outer ring of the first one-way ratchet has a first transmission gear ring, the outer ring of the second one-way ratchet has a second transmission gear ring, the first transmission gear ring meshes with the first transmission wheel, the first transmission wheel is fixedly installed on the driven shaft, the second transmission gear ring meshes with the intermediate wheel, the intermediate wheel is rotatably installed on the intermediate shaft, the intermediate shaft is fixedly installed in the transmission cavity, the intermediate wheel meshes with the second transmission wheel, and the second transmission wheel is fixedly installed on the driven shaft.

7. The briquettes thickness measuring device for a tamping coal-charging vehicle according to claim 1, characterized in that: A hollow cavity is provided inside the tamping rod, an exhaust hole communicating with the hollow cavity is provided on the upper side wall of the tamping rod, and the lower end of the hollow cavity is communicated with the material guiding channel.

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