A protective device for mining machinery safety

Abstract

The present invention relates to the technical field of mining equipment, and is a protective device for the safety of mining machinery, comprising a support frame, wherein both sides of the upper end of the support frame are respectively fixedly connected with a conveying frame plate, a conveying belt that can rotate intermittently is arranged between the conveying frame plates, and spring-pressure structures are respectively arranged on the conveying frame plates, and the spring-pressure structures include limit support plates that can buffer displacement up and down, a support plate is fixedly connected between the limit support plates, a feeding box with an open bottom end is arranged on the upper end of the support plate, and inclined sliding plates are respectively arranged on the two ends of the inner wall of the feeding box, and a belt protection structure that can fall onto the conveyor belt in sequence according to the size of the stone is also arranged on the support plate, which effectively solves the problem in the prior art that the sharp corners of the stone directly fall on the conveyor belt, and the sharp parts of the stone may scratch or even pierce the conveyor belt under the action of gravity, and the stone may impact the feeding box under the action of gravity, thereby affecting the service life of the feeding box.

Description

Technical Field

[0001] The present invention relates to the technical field of mining equipment, and in particular to a protective device for the safety of mining machinery. Background Art

[0002] At present, when carrying out mining stone mining operations, it is necessary to use a conveying device to transport the stones so that they can be concentrated at a designated location for secondary processing.

[0003] Usually, a feeding box is set at one end of the conveyor belt, and the stones fall onto the conveyor belt through the feeding box. Since the stones are of different sizes and some larger stones have sharp corners, they are directly dropped onto the conveyor belt. Under the action of gravity, the sharp parts of the stones may scratch or even pierce the conveyor belt.

[0004] When stones are put into the feeding box, the stones will impact the feeding box under the action of gravity, affecting the service life of the feeding box. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a protective device for the safety of mining machinery, which effectively solves the problem in the prior art that larger stones have relatively sharp corners and fall directly onto the conveyor belt. Under the action of gravity, the sharp parts of the stones may scratch or even pierce the conveyor belt, and the stones may impact the feeding box under the action of gravity, thereby affecting the service life of the feeding box.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A protective device for the safety of mining machinery, comprising a support frame, with conveyor frame plates fixedly connected to both sides of the upper end of the support frame, a conveyor belt that can rotate intermittently is arranged between the conveyor frame plates, and spring-pressure structures are respectively arranged on the conveyor frame plates, and the spring-pressure structures include limit support plates that can buffer displacement up and down, and support plates are fixedly connected between the limit support plates, a feeding box with an open bottom end is arranged on the upper end of the support plate, and inclined slide plates are respectively arranged on both ends of the inner wall of the feeding box, and a belt protection structure is also arranged on the support plate, which can fall onto the conveyor belt in sequence according to the size of the stone, and the belt protection structure includes a first spreading plate and a second spreading plate corresponding to the inclined slide plate and sliding towards each other.

[0008] A motor is provided at one end of the conveying frame plate, and a first rotating rod is fixedly connected to the output end of the motor, and a rotating shaft rod, an arc wheel and a driving pulley are fixedly connected to the first rotating rod in sequence, a first latch is provided at one end of the rotating shaft rod, and a dividing wheel corresponding to the first latch and the arc wheel is provided at one end of the driving pulley, and the dividing wheel is fixedly connected to an active friction wheel corresponding to the conveyor belt, and first and second friction wheels corresponding to the active friction wheel are respectively provided at both ends of the conveyor belt, and extrusion wheels corresponding to the conveyor belt are respectively provided at both ends of the active friction wheel.

[0009] The driving pulley belt is connected to the transfer pulley, and the transfer pulley belt is connected to the driven pulley, and the driven pulley is provided with a second rotating rod rotatably connected to the support plate, and the second rotating rod is connected to the belt protection structure, and the surface of the conveying frame plate is slidably connected to the first rotating plate and the second rotating plate are rotatably connected, and the first rotating plate and the second rotating plate are rotatably connected, and the linkage between the driving pulley and the transfer pulley is arranged on the first rotating plate, and the linkage between the transfer pulley and the driven pulley is arranged on the second rotating plate, one end of the first rotating plate is rotatably connected to the first rotating rod, and one end of the second rotating plate is rotatably connected to the second rotating rod.

[0010] The belt protection structure also includes a first inner groove wheel and a second inner groove wheel fixedly connected to two ends of the second rotating rod, and limit blocks are respectively arranged at two ends of the feeding box, and the first fixing rod and the second fixing rod are respectively slidably connected in the limit blocks, and one end of the first fixing rod and the second fixing rod are respectively provided with a second pin that meshes with the inner groove of the first inner groove wheel and the second inner groove wheel. The first fixing rod is fixedly connected to the first spreading plate, and the second fixing rod is fixedly connected to the second spreading plate. One end of the first spreading plate and the second spreading plate are respectively provided with a first sliding block slidably connected to the inner wall of the feeding box, and the opposite surfaces of the first spreading plate and the second spreading plate are respectively fixedly connected with mounting shaft blocks, and a number of rotating wheels are evenly arranged on the mounting shaft blocks, and the lower end of the feeding box is provided with a discharging cylinder connected to the support plate.

[0011] The spring-pressing structure also includes a limit plate arranged at two ends of the support plate, and the lower ends of the limit plate are respectively provided with a first support rod and a second support rod that are rotatably connected to the support plate, and the one end of the first support rod and the other end of the second support rod are respectively provided with a fixing pin that is fixedly connected to the limit plate and the conveying frame plate, and the other end of the first support rod and the other end of the second support rod are respectively provided with a sliding pin that is slidably connected to the limit plate and the conveying frame plate. The conveying frame is also provided with an axis frame that is slidably connected to the sliding rod. A spring that is sleeved with the sliding rod is arranged between the axis frame and the conveying frame plate. A second collecting plate is fixedly connected to the conveying frame plate by the sliding pin side at one end of the second support rod. The first collecting plate is provided at one end of the second collecting plate, and the sliding pin at one end of the second support rod is also coaxially fixedly connected to a support shaft block, and the support shaft block is provided with a third latch that is slidably connected to the inclined sliding groove opened on the second collecting plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention sets a belt protection structure, and under the action of the inclined sliding plate, all the stones on the first spreading plate and the second spreading plate will fall from between the first spreading plate and the second spreading plate, and the smaller stones will fall onto the conveyor belt first. Since the conveyor belt rotates intermittently, the small stones will stay on the conveyor belt at the lower end of the discharge barrel. With the expansion of the first spreading plate and the second spreading plate, the larger stones will fall on the small stones on the conveyor belt, and the small stones will act as buffers for the large stones, preventing the sharp ends of the large stones from falling directly on the conveyor belt, causing the conveyor belt to be worn or punctured, thereby affecting the service life of the conveyor belt.

[0014] 2. By setting up a spring pressure structure, a spring is used to buffer the pressure rotation of the first support rod and the second support rod, thereby buffering the impact force of the stone, which can effectively prevent the first and second spreading plates from being damaged by the impact of the stone. At the same time, the sliding pin at one end of the second support rod also drives the support shaft block to move when sliding, and the support shaft block drives the third pin to slide along the inclined slide groove on the second collecting plate. A baffle plate slidably connected to the conveyor belt is also provided at one end of the feeding box. On the one hand, the baffle plate can be used to scrape off the dust stuck on the conveyor belt, and on the other hand, it can also prevent The fallen stones are thrown out from the conveyor belt due to inertia. Since the second collecting plate is fixedly connected to the first collecting plate at one end, and the first collecting plate is provided with a second sliding block slidably connected to the inner wall of the baffle at one end, the first collecting plates at both ends of the conveyor frame plate move to the center under the action of the third latch. When small stones fall on the conveyor belt, the position of the small stones is not centered enough due to the elasticity of the conveyor belt. Therefore, the first collecting plate is provided to push the small stones on the edge side of the conveyor belt to the center, ensuring that the thickness is sufficient to buffer the large stones. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a first axonometric view of the present invention;

[0016] Figure 2 is a second axonometric view of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the conveyor belt of the present invention;

[0018] Figure 4 It is a schematic diagram of the first structure of the protective structure of the present invention;

[0019] Figure 5 It is a schematic diagram of the structure of the first rotating plate and the second rotating plate of the present invention;

[0020] Figure 6 It is a structural schematic diagram of the inclined sliding plate of the present invention;

[0021] Figure 7 It is a schematic structural diagram of the first spreading plate and the second spreading plate of the present invention;

[0022] Figure 8 It is a schematic structural diagram of the rotating wheel of the present invention;

[0023] Fig. 9 It is a first structural schematic diagram of the spring-pressing structure of the present invention;

[0024] Fig.10 It is a second structural schematic diagram of the spring-pressing structure of the present invention;

[0025] Fig.11 It is a structural schematic diagram of the feeding box of the present invention;

[0026] Fig.12 For the present invention Fig.10 A partial enlarged view of area A;

[0027] In the figure: 1, support frame, 2, conveyor frame plate, 3, feeding box, 4, inclined slide plate, 5, conveyor belt, 6, support plate, 7, limit support plate, 8, indexing wheel, 9, first latch, 10, driving pulley, 11, motor, 12, first inner groove wheel, 13, second inner groove wheel, 14, second rotating rod, 15, driving friction wheel, 16, extrusion wheel, 17, first friction wheel, 18, second friction wheel, 19, first rotating rod, 20, first rotating plate, 21, arc wheel, 22, transfer pulley, 23, second rotating plate, 24, driven pulley, 25, rotating shaft rod, 26, The first fixed rod, 27, the limit block, 28, the second latch, 29, the first spreading plate, 30, the second spreading plate, 31, the first slider, 32, the second fixed rod, 33, the mounting shaft block, 34, the rotating wheel, 35, the first support rod, 36, the second support rod, 37, the sliding pin, 38, the fixing pin, 39, the sliding rod, 40, the spring, 41, the shaft frame, 42, the first collecting plate, 43, the second collecting plate, 44, the third latch, 45, the inclined slide, 46, the discharge barrel, 47, the second slider, 48, the supporting shaft block, 49, the baffle, 50, the first transmission belt, 51, the second transmission belt. DETAILED DESCRIPTION

[0028] like Figure 1-12 As shown, a protective device for the safety of mining machinery comprises a support frame 1, and conveying frame plates 2 are fixedly connected to both sides of the upper end of the support frame 1, and a conveyor belt 5 that can rotate intermittently is arranged between the conveying frame plates 2, and spring-pressure structures are respectively arranged on the conveying frame plates 2, and the spring-pressure structures include limit support plates 7 that can buffer the displacement up and down, and support plates 6 are fixedly connected between the limit support plates 7, and a feeding box 3 with an open bottom is arranged on the upper end of the support plate 6, and inclined slide plates 4 are respectively arranged at both ends of the inner wall of the feeding box 3, and a belt protection structure is also arranged on the support plate 6, which can fall onto the conveyor belt 5 in sequence according to the size of the stone, and the belt protection structure includes a first spreading plate 29 and a second spreading plate 30 corresponding to the inclined slide plate 4 and sliding towards each other.

[0029] When the present invention is in use, the support frame 1 supports the conveying frame plate 2, and the conveying frame plate 2 supports and limits the conveying belt 5, and the edge of the conveying belt 5 is slidably connected to the inner surface of the conveying frame plate 2, which can prevent stones from mixing in from the gap between the two and causing damage to the conveying belt 5. The conveying belt 5 rotates intermittently to transport the stones. When the stones are put into the feeding box 3, the stones will fall on the first and second spreading plates 29 and 30 in the feeding box 3, and the first and second spreading plates 29 and 30 are driven toward each other. During the process of the first and second spreading plates 29 and 30 moving toward each other, since the inclined slide plate 4 is fixed in position and respectively arranged at the two ends of the feeding box 3, when the first and second spreading plates 29 and 30 move toward each other, the gap between the two gradually increases. Since the surfaces of the first and second spreading plates 29 and 30 are slidably connected to the inclined slide plate 4, the stones on the first and second spreading plates 29 and 30 are moved away from the feeding box 3. All the materials fall between the first spreading plate 29 and the second spreading plate 30, and the smaller stones will fall onto the conveyor belt 5 first. Since the conveyor belt 5 rotates intermittently, the small stones will stay on the conveyor belt 5 at the lower end of the discharge tube 46. As the first spreading plate 29 and the second spreading plate 30 are unfolded, the larger stones will fall on the small stones on the conveyor belt 5, and the small stones will be used to buffer the large stones to prevent the sharp ends of the large stones from falling directly on the conveyor belt 5, causing the conveyor belt 5 to be worn or punctured, thereby affecting the service life of the conveyor belt 5. When the stone falls on the first spreading plate 29 and the second spreading plate 30 through the feeding box 3, the first spreading plate 29 and the second spreading plate 30 will be impacted due to gravity. Therefore, when the stone falls on the first spreading plate 29 and the second spreading plate 30, under the influence of gravity, the support plate 6 and the limit support plates 7 at both ends of the support plate 6 will buffer the elastic downward movement, thereby buffering the impact force of the stone.

[0030] A motor 11 is provided at one end of the conveying frame plate 2, and a first rotating rod 19 is fixedly connected to the output end of the motor 11, and a rotating shaft rod 25, an arc wheel 21 and a driving pulley are fixedly connected to the first rotating rod 19 in sequence, a first latch 9 is provided at one end of the rotating shaft rod 25, and a dividing wheel 8 corresponding to the first latch 9 and the arc wheel 21 is provided at one end of the driving pulley 10, and the dividing wheel 8 is fixedly connected to an active friction wheel 15 corresponding to the conveyor belt 5, and a first friction wheel 17 and a second friction wheel 18 corresponding to the active friction wheel 15 are respectively provided at both ends of the conveyor belt 5, and an extrusion wheel 16 corresponding to the conveyor belt 5 is respectively provided at both ends of the active friction wheel 15.

[0031] like Figure 4As shown, the motor 11 is working, and the output end of the motor 11 drives the first rotating rod 19 to rotate. The first rotating rod 19 simultaneously drives the rotating shaft rod 25, the arc wheel 21 and the active pulley 10 to rotate. The rotating shaft rod 25 drives the first latch 9 to rotate in a circle when rotating. During the circular rotation of the first latch 9, the arc wheel 21 drives the indexing wheel 8 to rotate intermittently. During the rotation of the indexing wheel 8, the active friction wheel 15 is driven to rotate. During the rotation, the active friction wheel 15 cooperates with the first friction wheels 17 and the second friction wheels 18 at both ends to jointly drive the conveyor belt 5 to rotate intermittently, so as to transport the stones on the conveyor belt 5. The extrusion wheel 16 can increase the contact area between the active friction wheel 15 and the conveyor belt 5, so as to ensure that the active friction wheel 15 can drive the conveyor belt 5 to rotate when rotating.

[0032] The active pulley 10 is connected to a transfer pulley 22, and the transfer pulley 22 is connected to a driven pulley 24. The driven pulley 24 is provided with a second rotating rod 14 rotatably connected to the support plate 6, and the second rotating rod 14 is connected to the belt protection structure. The surface of the conveying frame plate 2 is respectively slidably connected to the first rotating plate 20 and the second rotating plate 23, and the first rotating plate 20 and the second rotating plate 23 are rotatably connected. The linkage between the active pulley 10 and the transfer pulley 22 is arranged on the first rotating plate 20, and the linkage between the transfer pulley 22 and the driven pulley 24 is arranged on the second rotating plate 23. One end of the first rotating plate 20 is rotatably connected to the first rotating rod 19, and one end of the second rotating plate 23 is rotatably connected to the second rotating rod 14.

[0033] like Figure 4 and 5 As shown, the driving pulley 10 and the transfer pulley 22 are provided with a first transmission belt 50, and the driving pulley 10 drives the transfer pulley 22 to rotate through the first transmission belt 50, and the transfer pulley 22 and the driven pulley 24 are provided with a second transmission belt 51, and the transfer pulley 22 drives the driven pulley 24 to rotate through the second transmission belt 51, and the driven pulley 24 drives the second rotating rod 14 to rotate, and the second rotating rod 14 drives the belt protection structure to work, and the first rotating plate 20 and the second rotating plate 23 respectively support the first transmission belt 50 and the second transmission belt 51, and the angle between the first rotating plate 20 and the second rotating plate 23 can be changed to ensure that the normal transmission of the first transmission belt 50 and the second transmission belt 51 will not be affected when the feeding box 3 is subjected to pressure buffering.

[0034] The belt protection structure also includes a first inner groove wheel 12 and a second inner groove wheel 13 fixedly connected to both ends of the second rotating rod 14, and limit blocks 27 are respectively provided at both ends of the feeding box 3, and the first fixed rod 26 and the second fixed rod 32 are respectively slidably connected in the limit blocks 27, and one end of the first fixed rod 26 and the second fixed rod 32 is respectively provided with a second pin 28 meshing with the inner groove of the first inner groove wheel 12 and the second inner groove wheel 13, the first fixed rod 26 is fixedly connected to the first spreading plate 29, and the second fixed rod 32 is fixedly connected to the second spreading plate 30, and one end of the first spreading plate 29 and the second spreading plate 30 is respectively provided with a first slider 31 slidably connected to the inner wall of the feeding box 3, and the first spreading plate 29 and the second spreading plate 30 are respectively fixedly connected to the opposite surfaces of the first spreading plate 29 and the second spreading plate 30. A plurality of rotating wheels 34 are evenly arranged on the mounting shaft block 33, and the lower end of the feeding box 3 is provided with a discharge cylinder 46 connected to the support plate 6.

[0035] like Figure 6 and 7 As shown in 8 and 11, the second rotating rod 14 drives the first inner groove wheel 12 and the second inner groove wheel 13 to rotate respectively when rotating, and the first inner groove wheel 12 and the second inner groove wheel 13 respectively engage with the second latch 28 on the first fixed rod 26 and the second fixed rod 32 when rotating, thereby driving the first fixed rod 26 and the second fixed rod 32 to slide toward each other under the limit of the limit block 27, and the first fixed rod 26 and the second fixed rod 32 respectively drive the first spreader plate 29 and the second spreader plate 30 to move toward each other, because the stone will fall onto the first spreader plate 29 and the second spreader plate 30 after passing through the feeding box 3, when the first spreader plate 29 and the second spreader plate 30 move outward toward each other, because the surfaces of the first spreader plate 29 and the second spreader plate 30 are slidably connected with the inclined slide plate 4, the distance between the first spreader plate 29 and the second spreader plate 30 changes from small to large, due to The inclined slide plate 4 is respectively fixed at the two ends of the feeding box 3, and the inclined slide plate 4 acts to make all the stones on the first spread plate 29 and the second spread plate 30 fall from between the first spread plate 29 and the second spread plate 30, and the smaller stones will fall onto the conveyor belt 5 first. Since the conveyor belt 5 rotates intermittently, the small stones will stay on the conveyor belt 5 at the lower end of the discharge cylinder 46. As the first spread plate 29 and the second spread plate 30 are unfolded, the larger stones will fall on the small stones on the conveyor belt 5, and the small stones will act as a buffer for the large stones to prevent the sharp ends of the large stones from falling directly on the conveyor belt 5, causing the conveyor belt 5 to be worn or punctured, thereby affecting the service life of the conveyor belt 5. The slider acts as a limit movement for the first spread plate 29 and the second spread plate 30 to ensure the horizontal reciprocating sliding of the first spread plate 29 and the second spread plate 30.

[0036] The spring-pressing structure also includes a limit support plate 7 arranged at both ends of the support plate 6, and the lower ends of the limit support plate 7 are respectively provided with a first support rod 35 and a second support rod 36 that are rotatably connected, and one end of the first support rod 35 and the second support rod 36 is respectively provided with a fixed pin 38 fixedly connected to the limit support plate 7 and the conveying frame plate 2, and the other ends of the first support rod 35 and the second support rod 36 are respectively provided with a sliding pin 37 that is slidably connected to the limit support plate 7 and the conveying frame plate 2, and the sliding pin 37 at one end of the second support rod 36 is provided with a sliding rod that is slidably connected to the inner wall of the conveying frame plate 2 39, the conveying frame plate 2 is also provided with an axis frame 41 slidably connected to the slide rod 39, a spring 40 sleeved and connected to the slide rod 39 is provided between the axis frame 41 and the conveying frame plate 2, a second collecting plate 43 fixedly connected to the conveying frame plate 2 is provided on the side of the sliding pin 37 at one end of the second support rod 36, a first collecting plate 42 is provided at one end of the second collecting plate 43, a support shaft block 48 is coaxially fixedly connected to the sliding pin 37 at one end of the second support rod 36, and a third latch 44 slidably connected to the inclined sliding groove 45 opened on the second collecting plate 43 is provided on the support shaft block 48.

[0037] like Fig. 9 and 10As shown in Figure 12, when the stone falls on the first and second spreading plates 29 and 30 through the feeding box 3, the first and second spreading plates 29 and 30 will be impacted due to gravity. Therefore, when the stone falls on the first and second spreading plates 29 and 30, the support plate 6 and the limit support plates 7 at both ends of the support plate 6 will move downward under the influence of gravity. During the downward movement of the limit support plate 7, the middle part of the first support rod 35 and the second support rod 36 rotates as an axis, and the sliding pins 37 at one end of the first support rod 35 and the second support rod 36 slide along the limit support plate 7 and the inner wall of the conveying frame plate 2 respectively, and the second support rod 36 at one end When the sliding pin 37 slides along the conveying frame plate 2, it drives the sliding rod 39 to slide along the inner wall of the conveying frame plate 2. Since one end of the sliding rod 39 is slidably connected to the inner wall of the shaft frame 41, the spring 40 is compressed, and the spring 40 is used to buffer the compressed rotation of the first support rod 35 and the second support rod 36, thereby buffering the impact force of the stone, which can effectively prevent the stone impact from causing damage to the first and second stalling plates 29 and 30. At the same time, the sliding pin 37 at one end of the second support rod 36 also drives the support shaft block 48 to move when sliding, and the support shaft block 48 drives the third latch 44 to move along the inclined slide groove 4 on the second collecting plate 43. 5 is slidable, and a baffle 49 is also provided at one end of the feeding box 3 and is slidably connected to the conveyor belt 5. On the one hand, the baffle 49 can be used to scrape off the dust stuck on the conveyor belt 5, and on the other hand, it can also prevent the fallen stones from being thrown out of the conveyor belt 5 due to the action of inertia. Since one end of the second collecting plate 43 is fixedly connected to the first collecting plate 42, and one end of the first collecting plate 42 is provided with a second slider 47 slidably connected to the inner wall of the baffle 49, the first collecting plates 42 at both ends of the conveying frame plate 2 move in the middle under the action of the third latch 44. When small stones fall on the conveyor belt 5, due to the elasticity of the conveyor belt 5, the small stones are The position of the stone is not centered enough, so a first collecting plate 42 is set up to push the small stones on the edge side of the conveyor belt 5 to the center, ensuring that the thickness is sufficient to buffer the large stones, and the expansion and contraction direction of the spring 40 is perpendicular to the direction of the stone's gravity falling. Compared with the expansion and contraction direction of the spring 40 being the same as the stone's gravity direction, the spring 40 can be protected to avoid repeated stretching of the spring 40 and causing elastic failure. Moreover, since the expansion and contraction direction of the spring 40 is opposite to the gravity direction of the stone, the spring 40 can also be prevented from repeatedly bouncing the feeding box 3 due to the elastic force, thereby affecting the feeding.

[0038] The working process of the present invention is as follows: when the present invention is in use, the support frame 1 supports the conveying frame plate 2, the conveying frame plate 2 supports and limits the conveyor belt 5, and the edge of the conveyor belt 5 is slidably connected to the inner surface of the conveying frame plate 2, which can prevent stones from mixing in from the interval between the two and causing damage to the conveyor belt 5. The motor 11 is working, and the output end of the motor 11 drives the first rotating rod 19 to rotate, and the first rotating rod 19 simultaneously drives the rotating shaft rod 25, the arc wheel 21 and the active pulley to rotate. The rotating shaft rod 25 drives the first latch 9 to rotate in a circle when rotating. During the circular rotation of the first latch 9, the arc wheel 21 drives the indexing wheel 8 to rotate intermittently. During the rotation of the indexing wheel 8, the active friction wheel 15 is driven to rotate. During the rotation, the active friction wheel 15 cooperates with the first friction wheel 17 and the second friction wheel 18 at both ends to jointly drive the conveyor belt 5 to rotate intermittently, so as to transport the stones on the conveyor belt 5.

[0039] When the stone is put into the feeding box 3, the stone will fall on the first spreading plate 29 and the second spreading plate 30 in the feeding box 3, the active pulley 10 drives the transfer pulley 22 to rotate through the first transmission belt 50, the transfer pulley 22 drives the driven pulley 24 to rotate through the second transmission belt 51, the driven pulley 24 drives the second rotating rod 14 to rotate, and the second rotating rod 14 drives the first inner groove wheel 12 and the second inner groove wheel 13 to rotate respectively when rotating, and the first inner groove wheel 12 and the second inner groove wheel 13 respectively engage with the second latch 28 on the first fixed rod 26 and the second fixed rod 32 when rotating, and then drive the first fixed rod 26 and the second fixed rod 32 to slide toward each other under the limit of the limit block 27, and the first fixed rod 26 and the second fixed rod 32 respectively drive the first spreading plate 29 and the second spreading plate 30 to move toward each other. Since the mine will fall on the first spreading plate 29 and the second spreading plate 30 after passing through the feeding box 3, when the first When the spreading plate 29 and the second spreading plate 30 move outwardly toward each other, since the surfaces of the first spreading plate 29 and the second spreading plate 30 are slidingly connected with the inclined sliding plate 4, the distance between the first spreading plate 29 and the second spreading plate 30 changes from small to large. Since the inclined sliding plate 4 is respectively fixed at the two ends of the feeding box 3, the inclined sliding plate 4 acts to make all the stones on the first spreading plate 29 and the second spreading plate 30 fall from between the first spreading plate 29 and the second spreading plate 30, and the smaller stones will fall onto the conveyor belt 5 first. Since the conveyor belt 5 rotates intermittently, the small stones will stay on the conveyor belt 5 at the lower end of the discharge barrel 46. As the first spreading plate 29 and the second spreading plate 30 are unfolded, the larger stones will fall on the small stones on the conveyor belt 5, and the small stones will act as buffers for the large stones, preventing the sharp ends of the large stones from falling directly on the conveyor belt 5, causing the conveyor belt 5 to be worn or punctured, thereby affecting the service life of the conveyor belt 5.

[0040] When the stone falls on the first spreading plate 29 and the second spreading plate 30 through the feeding box 3, the first spreading plate 29 and the second spreading plate 30 will be impacted due to gravity. Therefore, when the stone falls on the first spreading plate 29 and the second spreading plate 30, the support plate 6 and the limit support plates 7 at both ends of the support plate 6 will move downward under the influence of gravity impact. During the downward movement of the limit support plates 7, the middle parts of the first support rod 35 and the second support rod 36 rotate as the axis, and the sliding pins 37 at one end of the first support rod 35 and the second support rod 36 are separated. The first support rod 35 and the second support rod 36 slide along the inner wall of the conveying frame plate 2, respectively. The sliding pin 37 at one end of the second support rod 36 drives the sliding rod 39 to slide along the inner wall of the conveying frame plate 2 when sliding along the conveying frame plate 2. Since one end of the sliding rod 39 is slidably connected to the inner wall of the shaft frame 41, the spring 40 is compressed, and the spring 40 is used to buffer the compressed rotation of the first support rod 35 and the second support rod 36, thereby buffering the impact force of the stone, which can effectively prevent the stone impact from causing damage to the first and second spreading plates 29 and 30 At the same time, the sliding pin 37 at one end of the second support rod 36 also drives the support shaft block 48 to move when sliding, and the support shaft block 48 drives the third latch 44 to slide along the inclined slide groove 45 on the second collecting plate 43. A baffle 49 slidably connected to the conveyor belt 5 is also provided at one end of the feeding box 3. On the one hand, the baffle 49 can be used to scrape off the dust stuck on the conveyor belt 5, and on the other hand, it can also prevent the fallen stones from being thrown out of the conveyor belt 5 under the action of inertia. Since the first collecting plate 42 is fixedly connected to one end of the second collecting plate 43, and the second sliding block 47 slidably connected to the inner wall of the baffle 49 is provided at one end of the first collecting plate 42, the first collecting plates 42 at both ends of the conveying frame plate 2 move in the center under the action of the third latch 44. When small stones fall on the conveyor belt 5, due to the elasticity of the conveyor belt 5, the position of the small stones is not centered enough. Therefore, by providing the first collecting plate 42, the small stones on the edge side of the conveyor belt 5 are pushed in the center by the first collecting plate 42 to ensure that the thickness is sufficient to buffer the large stones.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for the safety of mining machinery, comprising a support frame (1), characterized in that: The upper ends of the support frame (1) are respectively fixedly connected with conveying frame plates (2), and an intermittently rotatable conveyor belt (5) is arranged between the conveying frame plates (2). Both ends of the conveying frame plates (2) are respectively provided with spring-pressing structures, and the spring-pressing structures include limit support plates (7) that can buffer displacement up and down. A support plate (6) is fixedly connected between the limit support plates (7). A feeding box (3) with an open bottom is arranged at the upper end of the support plate (6), and inclined slide plates (4) are respectively arranged at both ends of the inner wall of the feeding box (3). The support plate (6) is also provided with a belt protection structure that can fall onto the conveyor belt (5) in sequence according to the size of the stone, and the belt protection structure includes a first spreading plate (29) corresponding to the inclined slide plate (4) and sliding toward each other. and a second spreading plate (30), one end of the conveying frame plate (2) is provided with a motor (11), the output end of the motor (11) is fixedly connected to a first rotating rod (19), the first rotating rod (19) is respectively and sequentially fixedly connected to a rotating shaft rod (25), an arc wheel (21) and a driving pulley (10), one end of the rotating shaft rod (25) is provided with a first latch (9), one end of the driving pulley is provided with a dividing wheel (8) corresponding to the first latch (9) and the arc wheel (21), the dividing wheel (8) is fixedly connected to an active friction wheel (15) corresponding to the conveying belt (5), and the two ends of the conveying belt (5) are respectively provided with a first friction wheel (17) and a second friction wheel (18) corresponding to the active friction wheel (15), The two ends of the active friction wheel (15) are respectively provided with extrusion wheels (16) corresponding to the conveyor belt (5); the spring pressure structure also includes limit support plates (7) arranged at the two ends of the support plate (6); the lower ends of the limit support plates (7) are respectively provided with a first support rod (35) and a second support rod (36) which are rotatably connected to each other; one end of the first support rod (35) and the second support rod (36) are respectively provided with a fixed pin (38) which is fixedly connected to the limit support plate (7) and the conveyor frame plate (2); the other ends of the first support rod (35) and the second support rod (36) are respectively provided with a sliding pin (37) which is slidably connected to the limit support plate (7) and the conveyor frame plate (2); and the sliding pin (37) at one end of the second support rod (36) is provided with a A slide bar (39) is slidably connected to the inner wall of the conveying frame plate (2); the conveying frame plate (2) is also provided with an axis frame (41) slidably connected to the slide bar (39); a spring (40) sleeved and connected to the slide bar (39) is provided between the axis frame (41) and the conveying frame plate (2); a second collecting plate (43) fixedly connected to the conveying frame plate (2) is provided on the side of the sliding pin (37) at one end of the second support rod (36); a first collecting plate (42) is provided at one end of the second collecting plate (43); a support shaft block (48) is coaxially fixedly connected to the sliding pin (37) at one end of the second support rod (36); and the support shaft block (48) is provided with a third latch (44) slidably connected to an inclined sliding groove (45) provided on the second collecting plate (43).

2. A protective device for mining machinery safety according to claim 1, characterized in that: The driving pulley (10) is connected to a transfer pulley (22), and the transfer pulley (22) is connected to a driven pulley (24). The driven pulley (24) is provided with a second rotating rod (14) rotatably connected to the support plate (6), and the second rotating rod (14) is connected to the belt protection structure. The surface of the conveying frame plate (2) is slidably connected to a first rotating plate (20) and a second rotating plate (23), respectively, and the first rotating plate (20) and the second rotating plate (23) are rotatably connected. The linkage between the driving pulley (10) and the transfer pulley (22) is arranged on the first rotating plate (20), and the linkage between the transfer pulley (22) and the driven pulley (24) is arranged on the second rotating plate (23). One end of the first rotating plate (20) is rotatably connected to the first rotating rod (19), and one end of the second rotating plate (23) is rotatably connected to the second rotating rod (14).

3. A protective device for mining machinery safety according to claim 2, characterized in that: The belt protection structure further comprises a first inner groove wheel (12) and a second inner groove wheel (13) fixedly connected to both ends of the second rotating rod (14); limit blocks (27) are respectively arranged at both ends of the feeding box (3); a first fixed rod (26) and a second fixed rod (32) are respectively slidably connected in the limit blocks (27); one end of the first fixed rod (26) and the second fixed rod (32) are respectively provided with a second latch (28) meshing with the inner grooves of the first inner groove wheel (12) and the second inner groove wheel (13); the first fixed rod (26) is fixedly connected to the first rotating rod (14); On the first spreading plate (29), the second fixing rod (32) is fixedly connected to the second spreading plate (30), one end of the first spreading plate (29) and the second spreading plate (30) are respectively provided with a first sliding block (31) slidably connected to the inner wall of the feeding box (3), the first spreading plate (29) and the second spreading plate (30) are respectively fixedly connected on the opposite surfaces thereof with a mounting shaft block (33), a plurality of rotating wheels (34) are evenly arranged on the mounting shaft block (33), and the lower end of the feeding box (3) is provided with a discharging cylinder (46) connected to the support plate (6).

Images