Device for preventing traction steel cable from falling

Abstract

A device for preventing a traction steel cable from falling comprises a supporting frame, gears are rotationally connected to the two sides of the supporting frame respectively, a rack frame is arranged on the upper portion of the supporting frame, racks on the two sides of the rack frame are meshed with the gears on the two sides, release blocks are slidably connected to the two sides of the supporting frame respectively, a shaft is arranged between the two release blocks, and a pulley is fixedly connected to the outer side of the shaft. The steel cable is rotationally connected with the pulley, a swash plate is arranged on the side, connected with the canvas, of the steel cable, the inclined face of the swash plate makes contact with the inclined face of a wedge block in the middle of the rack frame to drive the rack frame to rise, and the release block, the gear and the rack frame are matched to position the shaft in the release block or release the shaft from the release block. The shaft is positioned at a high position by the supporting frames, the releasing blocks and the gears on the two sides, the steel cable is lifted when bypassing the pulleys on the shaft, the steel cable and the slope of the coal pile form a certain dip angle, the steel cable and canvas cannot sink into the coal pile, the slope of the swash plate makes contact with the slope of the rack frame, the swash plate pushes the rack frame upwards, and when the rack frame moves upwards, the racks on the two sides drive the gears to rotate. When the gear rotates, the half shaft rotates into the shaft hole in the opposite side of the semicircular hole from one side of the semicircular hole, the release block and the shaft roll down from the release groove under the action of gravity, and at the moment, the steel cable pulls the canvas to penetrate through the bottom of the supporting frame without obstacles.

Description

Technical Field

[0001] The invention relates to the field of thermal power generation, and in particular to a device for preventing a traction steel cable from falling. Background Art

[0002] Domestic coal stockpiles are divided into open-air and closed types. Due to environmental protection requirements, open-air coal yards should take measures to prevent coal dust from damaging the environment. Covering with rainproof and dustproof canvas is the most commonly used technical measure. The dustproof plastic sheet is covered and uncovered manually. When using it, the staff must climb to the top of the coal pile in advance, and the canvas must be pulled to the coal pile with a rope at the top. The canvas is covered manually on site. When covering manually, employees need to climb up and down the coal mountain according to weather conditions, etc., which is labor-intensive and has high safety risks.

[0003] At present, the mechanical canvas covering device has been used in some power plants. Its principle is to directly connect the canvas with the steel cable on the winch. After starting the winch, the canvas is turned over the coal pile with the steel cable to cover the entire coal pile. However, when the canvas reaches the outside of the top of the coal pile, it is subjected to a horizontal tension, causing the connecting steel cable to sink into the coal surface at the top of the coal pile. After the steel cable sinks into the coal pile, it generates great resistance, causing the canvas to be unable to cross the top of the coal pile. Therefore, workers must go to the sunken place and pull out the steel cable by hand, which increases the workload and reduces work efficiency.

[0004] When the winch cable is used to pull the canvas to cover the coal pile, the friction between the canvas and the coal pile surface is large, and the tension on the cable is also large. Since the coal on the outer side of the top of the coal pile is relatively soft, the cable will inevitably drill into the coal pile on the outer side of the top of the coal pile when subjected to a large tension. The greater the tension, the greater the porosity of the coal pile, and the greater the depth of the cable. After the cable drills into the coal pile, the cable pulls the canvas over the coal pile, which will inevitably cause the canvas to be inserted into the coal pile. The resistance to the canvas is getting greater and greater, and eventually the canvas will no longer be able to move upward.

[0005] In view of the above problems, the purpose of the present invention is to provide a device for preventing the steel cable from drilling into the coal pile. When in use, the patent of the present invention is laid on the outer side of the top of the coal pile to prevent the steel cable from sinking into the coal pile, thereby ultimately preventing the canvas from sinking into the coal pile when the canvas is climbing over the coal pile. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides a device for preventing a traction steel cable from sinking, which can prevent the steel cable and canvas from sinking into a coal pile by increasing the inclination angle of the steel cable.

[0007] The purpose of the present invention is to be achieved through the following technical solutions: A device for preventing a traction steel cable from falling comprises a support frame, wherein gears are rotatably connected on both sides of the support frame, a rack frame is provided on the upper part of the support frame, the racks on both sides of the rack frame are meshed with the gears on both sides, and release blocks are slidably connected on both sides of the support frame, a shaft is provided in the middle of the two release blocks, a pulley is fixedly connected to the outer side of the shaft, the steel cable is rotatably connected to the pulley, and a slant plate is provided on the side where the steel cable is connected to the canvas, and the rack frame is driven to rise when the inclined surface of the slant plate contacts the inclined surface of the wedge block in the middle of the rack frame, and the release block, the gear and the rack frame cooperate with each other to position the shaft in the release block or release it from the release block.

[0008] The support frame has rectangular grooves on both sides, the inner side of the rectangular grooves has openings, and one side of the rectangular grooves has shaft holes. The release block is slidably connected to the rectangular grooves, and the gear shaft in the middle of the gear is rotatably connected to the shaft hole.

[0009] The shaft hole passes through only half of the hole of the rectangular slot portion.

[0010] The release block has a release block hole at the lower front part, and one side of the release block hole has a release groove which is inclined downward and extends to the side of the release block, and both ends of the shaft enter into the release block hole along the release groove opening.

[0011] A semicircular hole is provided on the side of the release block, and a half shaft is provided on the outer side of the gear shaft, which is smaller than half of the gear shaft. When the semicircular hole and the shaft hole are kept concentric and the half shaft rotates to one side of the semicircular hole in the shaft hole, the opening of the release groove is closed by the inner side of the rectangular groove, and the shaft is stuck in the openings on both sides, and the release block and the shaft will not fall. When the semicircular hole and the shaft hole are kept concentric and the half shaft rotates to the opposite side of the semicircular hole in the shaft hole, the release block loses its obstruction, and the release block and the shaft fall. When the release block falls to the lowest position, the opening of the release groove leaks out of the rectangular groove, and the shaft rolls out of the release groove under the action of gravity.

[0012] The rack sliders on both sides of the rack frame are slidably connected with the sliding grooves on both sides of the support frame.

[0013] One side of the support frame is provided with a limiting plate for limiting the upper limit position of the rack frame.

[0014] Two side plates are movably connected to the two sides of the bottom of the support frame, and each side plate is threadedly connected with a group of fixing rods, and the fixing rods fix the support frame in the coal pile.

[0015] Beneficial effects: When the winch is working, the shaft is positioned at a high place by the support frames, release blocks and gears on both sides. The steel cable is lifted when it passes around the pulley on the shaft. The steel cable and the inclined surface of the coal pile have a certain inclination angle, and the steel cable and the canvas will not sink into the coal pile. The inclined surface of the inclined plate is in contact with the inclined surface of the rack frame, and the inclined plate pushes the rack frame upward. When the rack frame moves upward, the racks on both sides drive the gears to rotate. When the gears rotate, the half shaft rotates from one side of the semicircular hole to the shaft hole on the opposite side of the semicircular hole. The release block and the shaft roll down from the release groove under the action of gravity. At this time, the steel cable pulls the canvas through the bottom of the support frame without obstacles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram of the structure of the device for preventing the traction cable from falling.

[0017] Figure 2 It is a schematic diagram of the release block, gear, rack frame and shaft connection structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the support frame structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the rectangular groove described in the present invention.

[0020] Figure 5 This is a schematic diagram of the release block structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the gear structure of the present invention.

[0022] Figure 7 This is a schematic diagram of the rack structure of the present invention. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below according to the accompanying drawings and embodiments: refer to Figure 1 , 2 The device includes a support frame 110, and the support frame 110 has a plate-shaped side panel 120 hinged on both sides. A group of fixing rods 130 are respectively threadedly connected to each side panel 120. When in use, the device is placed on the top of the coal pile, and the side panels 120 on both sides are placed on the coal pile. The fixing rods 130 are rotated and penetrated into the coal pile, so that the device can be stably fixed on the coal pile.

[0024] refer to Figures 3 to 5 Two symmetrical support rods 111 are respectively provided on both sides of the support frame 110, and a rectangular support block 112 is provided on the upper part of each support rod 111, and each support block 112 has a rectangular groove 114, and the inner side of the rectangular groove 114 has an opening 115 that penetrates the rectangular groove 114, and each rectangular groove 114 has a rectangular release block 140, and the upper part of the release block 140 has a baffle to prevent the release block 140 from falling from the support block 112, and the lower part of the front of the release block 140 has a release block hole 141, and the release block hole 141 is a blind hole. One side of the release block hole 141 has a groove release groove 142 that is inclined downward and extends to the side of the release block 140, and shafts 170 are provided in the release blocks 140 on both sides, and both ends of the shaft 170 enter the release block hole 141 along the opening of the release groove 142.

[0025] refer to Figure 2 , 3 arrive Figure 6 , an axial hole 116 is provided on the side of the rectangular groove 114, and only half of the hole is formed when the axial hole 116 passes through the rectangular groove 114, a semicircular hole 143 is provided on the side of the release block 140, and a gear 150 is provided in the axial hole 116, and a gear shaft 151 is provided in the middle of the gear 150, and a semi-shaft 152 is provided on the outer side of the gear shaft 151, and the semi-shaft 152 is smaller than half of the gear shaft 151, and the gear shaft 151 is rotatably connected to the axial hole 116, and the semi-shaft 152 can rotate in the axial hole 116 and the semi-circular hole 143. When the semi-circular hole 143 and the axial hole 116 are kept concentric, and the semi-shaft 152 rotates to one side of the semi-circular hole 143 in the axial hole 116, the release blocks 140 on both sides are at the upper part of the rectangular groove 114, and the opening of the release groove 142 is closed by the inner side of the rectangular groove 114, and the shaft 170 is stuck in the openings 115 on both sides, and the release block 140 and the shaft 170 will not fall. When the semicircular hole 143 and the shaft hole 116 remain concentric, when the half shaft 152 rotates in the shaft hole 116 to the side opposite to the semicircular hole 143, the release block 140 loses its obstruction, and the release block 140 and the shaft 170 fall. When the release block 140 falls to the lowest position, the opening of the release groove 142 leaks out of the rectangular groove 114, and the shaft 170 rolls down from the release groove 142 under the action of gravity.

[0026] refer to Figure 3 , Figure 7 The support rod 111 has a vertical slide groove 113 on the outside, and rack racks 160 are arranged in the slide grooves 113 on both sides. Rack racks 161 are arranged on both sides of the rack rack 160, and each rack 161 has a rack slider 162 on the outside. The rack slider 162 is slidably connected to the slide groove 113 on the corresponding side, and the matching clearance between the rack slider 162 and the slide groove 113 is controlled so that the rack slider 162 and the slide groove 113 form a transition fit. When there is no external force on the rack rack 160, the rack slider 162 will not move in the slide groove 113. When the rack rack 160 is pushed, the rack rack 160 can move in the slide groove 113, and each rack 161 is meshed with the gear 150 on the corresponding side.

[0027] refer to Figure 1A pulley 180 is provided in the middle of the shaft 170, and a steel cable 190 is passed around the outside of the pulley 180. A swash plate 210 is provided on the side of the steel cable 190 close to the canvas. The swash plate 210 is a disc-shaped structure with a slanted surface at the edge. A wedge block 163 with a slanted surface at the bottom is provided in the middle of the rack frame 160. When the swash plate 210 is close to the rack frame 160, the slanted surface of the swash plate 210 contacts the slanted surface of the wedge block 163, and the swash plate 210 pushes the rack frame 160 upward. When the rack frame 160 moves upward, the racks 161 on both sides drive the gear 150 to rotate. When 150 rotates, the half shaft 152 rotates from the shaft hole 116 on one side of the semicircular hole 143 to the shaft hole 116 on the opposite side of the semicircular hole 143, and the shaft 170 rolls down from the release groove 142 under the action of gravity. At this time, the steel cable 190 pulls the canvas through the bottom of the support frame 110. Therefore, when the inclined plate 210 does not hit the wedge block 163, the steel cable 190 bypasses the outside of the pulley 180. The steel cable 190 pulls the canvas from a high place, and there is a certain inclination angle between the wire rope and the inclined surface of the coal pile, and the steel cable 190 and the canvas will not fall into the coal pile.

[0028] refer to Figure 3 A limit plate 117 is provided on the upper part of one side of the support rod 111. When the rack frame 160 is raised, the limit plate 117 will limit the position of the uppermost part of the rack frame 160, ensuring that the half shaft 152 rotates to the shaft hole 116 opposite the semicircular hole 143 and remains stationary. At this time, the steel cable 190 is deformed by force, and the swash plate 210 slides over the lower part of the rack frame 160.

[0029] In the initial state of the device, the release blocks 140 on both sides are at the lowest position, the release slot 142 opens out of the rectangular slot 114, and the half shaft 152 is on the opposite side of the semicircular hole 143. The shaft 170 is pushed from the release slots 142 on both sides into the release block hole 141, and the shaft 170 is lifted to move the release blocks 140 on both sides upward. When the semicircular hole 143 and the shaft hole 116 are concentric, the rack frame 160 is pushed to rotate the half shaft 152 to the side of the semicircular hole 143. At this time, the release block 140 is positioned by the gear 150, and the shaft 170 is stuck in the openings 115 on both sides. One side of the steel cable is connected to the canvas, and the other side of the steel cable bypasses the steel cable 190 and is connected to the winch. When the winch is working, it pulls the steel cable 190, and the steel cable When 190 passes around the pulley 180, it is lifted up. There is a certain inclination angle between the steel cable 190 and the inclined surface of the coal pile. The steel cable 190 and the canvas will not sink into the coal pile. When the canvas is pulled to the upper part of the coal pile, the inclined surface of the swash plate 210 contacts the inclined surface of the rack rack 160. The swash plate 210 pushes the rack rack 160 upward. When the rack rack 160 moves upward, the racks 161 on both sides drive the gear 150 to rotate. When the gear 150 rotates, the half shaft 152 rotates from the shaft hole 116 on one side of the semicircular hole 143 to the shaft hole 116 on the opposite side of the semicircular hole 143. The release block 140 and the shaft 170 roll down from the release groove 142 under the action of gravity. At this time, the steel cable 190 pulls the canvas to pass through the bottom of the support frame 110 without obstacles.

[0030] When the winch is working, the shaft 170 is positioned at a high place by the support frames 110, the release block 140 and the gear 150 on both sides. The steel cable 190 is lifted when it passes around the pulley 180 on the shaft 170. The steel cable 190 and the inclined surface of the coal pile have a certain inclination angle, and the steel cable 190 and the canvas will not fall into the coal pile. The inclined surface of the swash plate 210 contacts the inclined surface of the rack frame 160, and the swash plate 210 pushes the rack frame 160 upward. When the rack frame 160 moves upward, the racks 161 on both sides drive the gear 150 to rotate. When the gear 150 rotates, the half shaft 152 rotates from one side of the semicircular hole 143 to the shaft hole 116 on the opposite side of the semicircular hole 143. The release block 140 and the shaft 170 roll down from the release groove 142 under the action of gravity. At this time, the steel cable 190 pulls the canvas to pass through the bottom of the support frame 110 without obstacles.

Claims

1. A device for preventing a traction cable from falling, characterized in that : It comprises a support frame (110), the two sides of the support frame (110) are respectively rotatably connected to the gears (150), the upper part of the support frame (110) is provided with a rack frame (160), the racks (161) on both sides of the rack frame (160) and the gears (150) on both sides are meshed with each other, the two sides of the support frame (110) are respectively slidably connected to the release blocks (140), the middle of the two release blocks (140) is provided with a shaft (170), the outer side of the shaft (170) is fixedly connected to the pulley (18 0), the steel cable (190) rotates to connect the pulley (180), and a swash plate (210) is provided on one side of the steel cable (190) connected to the canvas. When the inclined surface of the swash plate (210) contacts the inclined surface of the wedge block (163) in the middle of the rack frame (160), the rack frame (160) is driven to rise, and the release block (140), the gear (150), and the rack frame (160) cooperate with each other to position the shaft (170) in the release block (140) or release it from the release block (140).

2. A device for preventing a traction cable from falling according to claim 1, characterized in that : The support frame (110) has rectangular grooves (114) on both sides, the inner side of the rectangular groove (114) has an opening (115), one side of the rectangular groove (114) has an axial hole (116), the release block (140) is slidably connected to the rectangular groove (114), and the gear shaft (151) in the middle of the gear (150) is rotatably connected to the axial hole (116).

3. A device for preventing a traction cable from falling according to claim 2, characterized in that The shaft hole (116) passes through only half of the rectangular slot (114).

4. The device for preventing a traction cable from falling according to claim 1, characterized in that The release block (140) has a release block hole (141) at the lower front portion, and one side of the release block hole (141) has a release groove (142) that is inclined downward and extends to the side of the release block (140), and both ends of the shaft (170) enter the release block hole (141) along the opening of the release groove (142).

5. The device for preventing a traction cable from falling according to claim 1, characterized in that The release block (140) is provided with a semicircular hole (143) on the side thereof, and a half shaft (152) is provided on the outside of the gear shaft (151), and the half shaft (152) is smaller than half of the gear shaft (151). When the semicircular hole (143) and the shaft hole (116) are kept concentric, and the half shaft (152) rotates in the shaft hole (116) to one side of the semicircular hole (143), the opening of the release groove (142) is closed by the inner side of the rectangular groove (114), and the shaft (170) is stuck in the openings (115) on both sides, and the release block ( 140) and the shaft (170) will not fall. When the semicircular hole (143) and the shaft hole (116) remain concentric and the half shaft (152) rotates in the shaft hole (116) to the side opposite to the semicircular hole (143), the release block (140) loses its obstruction, and the release block (140) and the shaft (170) fall. When the release block (140) falls to the lowest position, the opening of the release groove (142) leaks out of the rectangular groove (114), and the shaft (170) rolls out of the release groove (142) under the action of gravity.

6. The device for preventing a traction cable from falling according to claim 1, characterized in that The rack sliders (162) on both sides of the rack frame (160) and the slide grooves (113) on both sides of the support frame (110) are slidably connected.

7. The device for preventing a traction cable from falling according to claim 1, characterized in that One side of the support frame (110) has a limit plate (117) for limiting the upper limit position of the rack frame (160).

8. The device for preventing a traction cable from falling according to claim 1, characterized in that The two sides of the bottom of the support frame (110) are movably connected to two side plates (120), and each side plate (120) is threadedly connected to a group of fixing rods (130), and the fixing rods (130) fix the support frame (110) in the coal pile.

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