Gravel screening device for highway tunnel engineering

Abstract

The invention relates to the technical field of highway tunnels, in particular to a gravel screening device for highway tunnel engineering. A protective cover; a multi-station synchronous screening unit; a recycling box; the air control and dust collection unit is arranged on the inner side of the supporting base and connected with the multi-station synchronous screening unit; the adsorption type iron removal unit is arranged on the outer side of the multi-station synchronous screening unit, is connected with the protective cover and is connected with the multi-station synchronous screening unit; wherein the multi-station synchronous screening unit comprises a multi-item synchronous screening assembly, a multi-element driving and controlling assembly and a reciprocating type knocking assembly, by arranging the multi-station synchronous screening unit, multi-station synchronous screening of different particle size levels can be conducted on gravel according to requirements, dust can be further absorbed in the screening process, and the screening efficiency is improved. And iron blocks in the gravel can be recycled.

Description

Technical Field

[0001] The invention relates to the technical field of highway tunnels, in particular to a sand and gravel screening device for highway tunnel engineering. Background Art

[0002] Highway tunnels are passages specially used for automobile transportation. Highway tunnels play an important role in highway development. They can shorten the distance of highways and reduce the difficulty of highway construction. my country has now become a major country in highway construction, so there are many highway tunnels in my country.

[0003] Sand and gravel are needed when building highway tunnels, and when using sand and gravel, they need to be screened. The existing sand and gravel screening devices are often limited by the structure during the screening process, resulting in slow screening efficiency and lack of corresponding dust protection, resulting in poor environmental performance. Therefore, in view of the above situation, it is urgent to develop a sand and gravel screening device for highway tunnel engineering to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a sand and gravel screening device for highway tunnel engineering to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A sand and gravel screening device for highway tunnel engineering, comprising: a supporting base; a protective cover, the protective cover is fixedly connected to the outer side of the top of the supporting base; a multi-station synchronous screening unit, the multi-station synchronous screening unit is arranged on the inner side of the protective cover and is connected to the supporting base, and is used for multi-station synchronous screening of sand and gravel with different particle size levels; a recycling box, the recycling box is arranged between the multi-station synchronous screening unit and the supporting base, and is plugged into the protective cover, and is used to cooperate with the multi-station synchronous screening unit to realize the reception and storage of screened sand and gravel; an air control dust collection unit, the air control dust collection unit is arranged on the inner side of the supporting base, and is connected to the multi-station synchronous screening unit, and is used to cooperate with the multi-station synchronous screening unit to realize the absorption and collection of scattered dust; an adsorption iron removal unit, the adsorption iron removal unit is arranged on the outer side of the multi-station synchronous screening unit, and is plugged into the protective cover The protective cover is connected to the multi-station synchronous screening unit and is connected to the multi-station synchronous screening unit, and is used to cooperate with the multi-station synchronous screening unit to realize the absorption of metal impurities in sand and gravel; wherein the multi-station synchronous screening unit includes: multiple synchronous screening components, multiple drive control components and reciprocating knocking components, the multiple synchronous screening components are arranged on the inner side of the protective cover and are fixedly connected to the support base, the multiple drive control component is arranged on the inner side of the support base, the multiple drive control component is connected to the multiple synchronous screening components, and is used to drive the multiple synchronous screening components to perform multi-station synchronous screening of sand and gravel with different particle size levels, the multiple drive control component is also connected to the air control dust collection unit and the adsorption-type iron removal unit, and the multiple synchronous screening components are also provided with a reciprocating knocking component, and the reciprocating knocking component is connected to the multiple synchronous screening components, and is used to cooperate with the multiple synchronous screening components to realize knocking on the equipment.

[0006] Compared with the prior art, the present invention has the following beneficial effects: When the device is running, the sand and gravel are placed inside the multiple synchronous screening components, and the multiple drive control components can drive the multiple synchronous screening components. The multiple synchronous screening components can perform multi-station synchronous screening of sand and gravel with different particle size levels, and the screened sand and gravel fall into the corresponding recovery box. The multiple synchronous screening components can drive the reciprocating knocking components during operation, and the reciprocating knocking components can knock on the multiple synchronous screening components, which can not only improve the screening efficiency of the equipment, but also realize the jumping of sand and gravel. The adsorption-type iron removal unit can cooperate with the jumping of sand and gravel to absorb the iron in the sand and gravel, thereby facilitating the collection of iron block resources in sand and gravel and avoiding waste. The multiple drive control components can also drive the air control dust collection unit, and the air control dust collection unit can cooperate with the multiple synchronous screening components to remove dust emitted during the operation of the equipment. The multi-drive control component can drive the adsorption-type iron removal unit to perform reciprocating motion, thereby ensuring the comprehensiveness of iron removal. Compared with the prior art, the sand and gravel screening device is often subject to structural limitations during the screening process, resulting in slow screening efficiency and lack of corresponding dust protection, resulting in poor environmental performance. By setting a multi-station synchronous screening unit, cooperating with an air-controlled dust collection unit and an adsorption-type iron removal unit, not only can the sand and gravel be screened synchronously at multiple stations, but also the sand and gravel can be screened synchronously at multiple stations of different particle size levels according to needs, which greatly improves the screening efficiency and improves the flexibility of the equipment when used. It can also complete the timely absorption of dust during the screening process, and can recover the iron blocks in the sand and gravel, thus avoiding waste of resources and reducing damage to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the structure of a sand and gravel screening device for highway tunnel engineering.

[0008] Figure 2 A cross-sectional view of a sand and gravel screening device for highway tunnel engineering.

[0009] Figure 3 This is a schematic diagram of the structure of multiple synchronous screening components in a sand and gravel screening device for highway tunnel engineering.

[0010] Figure 4 This is a schematic diagram of the structure of the movable frame in the sand and gravel screening device for highway tunnel engineering.

[0011] Figure 5 This is a schematic diagram of the structure of the multi-element drive control component in the sand and gravel screening device for highway tunnel engineering.

[0012] Figure 6 This is a schematic diagram of the structure of a reciprocating hammer assembly in a sand and gravel screening device for highway tunnel engineering.

[0013] Figure 7 This is a schematic diagram of the structure of the air-controlled dust collection unit in the sand and gravel screening device for highway tunnel engineering.

[0014] Figure 8 This is a schematic diagram of the structure of the adsorption-type iron removal unit in the sand and gravel screening device for highway tunnel engineering.

[0015] In the figure: 1-protective cover, 2-support base, 3-multi-station synchronous screening unit, 4-recovery box, 5-adsorption iron removal unit, 6-gas control dust collection unit, 7-multi-synchronous screening components, 8-multi-drive control components, 9-reciprocating knocking components, 10-support seat, 11-regulating rod, 12-rotating wheel, 13-control wheel, 14-movable frame, 15-positioning slider, 16-screen frame, 17-block, 18-adjusting tooth, 19-positioning slide, 20-placing slot, 21-power source, 22-power rod, 23-eccentric wheel, 24-transmission control plate, 25-control teeth, 26-transmission seat, 27-pressure control groove, 28-pressure stabilizing chamber, 29-reset part, 30-pressure control part, 31-lifting plate, 32-steering gear, 33-turning rod, 34-flipping wheel, 35-fixing rod, 36-knocking rod, 37-rotating wheel, 38-air control box, 39-dust collecting box, 40-air supply pipe, 41-intake pipe, 42-support rod, 43-fan, 44-cleaning brush, 45-connecting slide bar, 46-dust removal frame, 47-sensing seat, 48-sensing groove, 49-pressure stabilizing tube, 50-pressure sensing part, 51-adsorption plate, 52-positioning guide plate. DETAILED DESCRIPTION

[0016] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0017] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0018] See also Figure 1 and Figure 2In one embodiment of the present invention, a sand and gravel screening device for highway tunnel engineering includes: a support base 2; a protective cover 1, the protective cover 1 is fixedly connected to the outer side of the top of the support base 2; a multi-station synchronous screening unit 3, the multi-station synchronous screening unit 3 is arranged on the inner side of the protective cover 1 and connected to the support base 2, and is used for multi-station synchronous screening of sand and gravel of different particle size levels; a recovery box 4, the recovery box 4 is arranged between the multi-station synchronous screening unit 3 and the support base 2, and is plugged into the protective cover 1, and is used to cooperate with the multi-station synchronous screening unit 3 to receive and store the screened sand and gravel; an air control dust collection unit 6, the air control dust collection unit 6 is arranged on the inner side of the support base 2, and is connected to the multi-station synchronous screening unit 3, and is used to cooperate with the multi-station synchronous screening unit 3 to absorb and collect the scattered dust; an adsorption iron removal unit 5, the adsorption iron removal unit 5 is arranged on the outer side of the multi-station synchronous screening unit 3 , connected to the protective cover 1, and connected to the multi-station synchronous screening unit 3, used to cooperate with the multi-station synchronous screening unit 3 to realize the absorption of metal impurities in sand and gravel; wherein, the multi-station synchronous screening unit 3 includes: multiple synchronous screening components 7, multiple drive control components 8 and reciprocating knocking components 9, the multiple synchronous screening components 7 are arranged on the inner side of the protective cover 1, and are fixedly connected to the support base 2, the multiple drive control component 8 is arranged on the inner side of the support base 2, the multiple drive control component 8 is connected to the multiple synchronous screening components 7, used to drive the multiple synchronous screening components 7 to perform multi-station synchronous screening of sand and gravel with different particle size levels, the multiple drive control component 8 is also connected to the air control dust collection unit 6 and the adsorption-type iron removal unit 5, the multiple synchronous screening components 7 are also provided with a reciprocating knocking component 9, the reciprocating knocking component 9 is connected to the multiple synchronous screening components 7, used to cooperate with the multiple synchronous screening components 7 to realize the knocking of the equipment.

[0019] In this embodiment, when the device is running, sand and gravel are placed inside the multiple synchronous screening components 7, and the multiple drive control components 8 can drive the multiple synchronous screening components 7. The multiple synchronous screening components 7 can perform multi-station synchronous screening of sand and gravel with different particle size levels, and the screened sand and gravel fall into the corresponding recovery box 4. The multiple synchronous screening components 7 can drive the reciprocating knocking component 9 during operation, and the reciprocating knocking component 9 can knock on the multiple synchronous screening components 7, which can not only improve the screening efficiency of the equipment, but also realize the jumping of sand and gravel. The adsorption-type iron removal unit 5 can cooperate with the jumping of sand and gravel to absorb the iron in the sand and gravel, thereby facilitating the collection of iron block resources in the sand and gravel and avoiding waste. The multiple drive control component 8 can also drive the air control dust collection unit 6, and the air control dust collection unit 6 can cooperate with the multiple synchronous screening components 7 to control the operation of the equipment. The dust scattered during the operation is absorbed to avoid pollution to the environment. The multi-drive control component 8 can drive the adsorption-type iron removal unit 5 to perform reciprocating motion, thereby ensuring the comprehensiveness of iron removal. Compared with the prior art, the sand and gravel screening device in the screening process is often limited by the structure, resulting in slow screening efficiency and lack of corresponding dust protection, resulting in poor environmental protection performance. By setting a multi-station synchronous screening unit 3, cooperating with the air control dust collection unit 6 and the adsorption-type iron removal unit 5, not only can the sand and gravel be screened synchronously at multiple stations, but also the sand and gravel can be screened synchronously at multiple stations of different particle size levels according to needs, which greatly improves the screening efficiency and improves the flexibility of the equipment when used. It can also complete the timely absorption of dust during the screening process, and can recover the iron blocks in the sand and gravel, avoiding waste of resources and reducing damage to the environment.

[0020] In one embodiment of the present invention, please refer to Figure 3 and Figure 4The multiple synchronous screening components 7 include: a support seat 10, a regulating rod 11, a rotating wheel 12, a control wheel 13, a movable frame 14, a screen frame 16, a block 17 and an adjusting tooth 18. The support seat 10 is arranged on the inner side of the protective cover 1, and the bottom end is fixedly connected to the support base 2. The movable frame 14 runs through the support seat 10 and is slidably connected to the support seat 10. Positioning slide grooves 19 are arranged on the outer walls on both sides of the movable frame 14. The inner side of the positioning slide groove 19 is slidably connected to a positioning slider 15 fixedly connected to the support seat 10. The movable frame 14 is symmetrically provided with placement grooves 20. The placement grooves 20 are arranged on both sides of the support seat 10. The screen frame 16 is connected to the placement The movable frame 14 is inserted into the groove 20, and a plurality of blocks 17 are slidably connected on the frame wall of the movable frame 14, and a spring is fixedly connected between the block 17 and the movable frame 14, and a card slot engaged with the block 17 is arranged on the outer wall of the screen frame 16. The regulating rod 11 is rotatably connected to the support seat 10, and a rotating wheel 12 connected to the multi-drive control component 8 is fixedly connected to the outer side of the bottom end. A control wheel 13 is also fixedly connected to the outer side of the regulating rod 11, and the control wheel 13 is meshed with the regulating teeth 18 fixedly connected to the inner side of the movable frame 14, and is used to cooperate with the multi-drive control component 8 to drive the movable frame 14 to reciprocate, so as to realize the rapid screening of the sand and gravel located on the inner side of the screen frame 16.

[0021] In this embodiment, the placement groove 20 is arranged on the left and right end frame walls of the movable frame 14, and the front and rear side frame walls of the movable frame 14 are provided with positioning slide grooves 19, and the inner side of the positioning slide groove 19 is slidably connected with a positioning slider 15, and the positioning slider 15 is fixedly connected to the support seat 10. In addition, the bottom end of the screen frame 16 is fixedly connected with a screen. By setting different types of screens, sand and gravel with different particle size levels can be screened synchronously at multiple stations. The screen frame 16 is inserted into the inner side of the placement groove 20, and the block 17 cooperates with the movable frame 14 to realize the positioning and fixation of the screen frame 16. The multi-drive control component 8 cooperates with the rotating wheel 12 to drive the regulating rod 11 to rotate alternately clockwise and counterclockwise, and the regulating rod 11 drives the control wheel 13 to rotate synchronously, and the control wheel 13 cooperates with the adjusting tooth 18 to drive the movable frame 14 to perform lateral reciprocating motion along the positioning slider 15, and the movable frame 14 drives the screen frames 16 on both sides to move synchronously. The screen frames 16 on both sides can perform multi-station synchronous screening of sand and gravel with different particle sizes during movement, and the screened sand and gravel fall into the corresponding inner side of the recovery box 4. By setting multiple synchronous screening components 7, it can cooperate with the multiple drive control component 8 to realize multi-station synchronous screening of sand and gravel, thereby improving the screening efficiency of the equipment, and can perform screening of different particle sizes at two stations according to needs, thereby improving the flexibility of the equipment when in use, facilitating people to carry out subsequent processing, and enhancing the diversity of the equipment.

[0022] In one embodiment of the present invention, please refer to Figure 5 The multi-drive control component 8 includes: a power source 21, a power rod 22, an eccentric wheel 23, a transmission control plate 24, a control tooth 25, a transmission seat 26, a pressure control groove 27, a pressure stabilizing chamber 28 and a pressure control member 30. The power source 21 is fixedly connected to the top of the inner side of the support base 2, and the power rod 22 connected to the air control dust collection unit 6 is fixedly connected to the outer side of the output end of the power source 21. The eccentric wheel 23 is also fixedly connected to the outer side of the power rod 22. The transmission control plate 24 slidably connected to the inner wall of the support base 2 is abutted on the outer side of the eccentric wheel 23. The transmission control plate 24 is fixedly connected to the outer side of the end away from the power rod 22. The control tooth 25 is fixedly connected to the rotating wheel 1 2 meshing connection, the transmission plate 24 is also provided with a transmission seat 26 fixedly connected to the support base 2 on the outside, a plurality of pressure control grooves 27 are provided on the inside of the transmission seat 26, a pressure stabilizing chamber 28 connected to each pressure control groove 27 is also provided on the inside of the transmission seat 26, and the pressure stabilizing chamber 28 is also connected to the adsorption type iron removal unit 5, and a pressure control member 30 fixedly connected to the transmission plate 24 is provided on the inside of the pressure control groove 27 in a sliding connection, and a reset member 29 is fixedly connected between the pressure control member 30 and the transmission seat 26, which is used to cooperate with the rotation of the eccentric wheel 23 to drive the transmission plate 24 to reciprocate, realize the rotation of the regulating rod 11, and complete the driving of the adsorption type iron removal unit 5.

[0023] In this embodiment, the power source 21 is a driving motor, the output end of the power source 21 is fixedly connected to the power rod 22, and the eccentric wheel 23 is fixedly connected to the outer side of the power rod 22. In addition, the pressure control member 30 includes a first piston slidably connected to the inner side of the pressure control groove 27 and a first push rod fixedly connected to the first piston, the other end of the first push rod is fixedly connected to the transmission control plate 24, and the reset member 29 is a spring, one end of which is fixedly connected to the first piston, and the other end is fixedly connected to the inner wall of the pressure stabilizing chamber 28. By setting a multi-drive control component 8, the power source 21 drives the power rod 22 to rotate, and the power rod 22 can complete the control of the air dust collection unit when it rotates. 6, the power rod 22 can also drive the eccentric wheel 23 to rotate, the eccentric wheel 23 can push the control plate 24 to move, and cooperate with the spring set between the first piston and the transmission seat 26 to realize the reciprocating motion of the control plate 24, and the control plate 24 drives the control tooth 25 to move, and the control tooth 25 cooperates with the rotating wheel 12 to realize the rotation of the regulating rod 11, thereby realizing the shaking of the screen frame 16, and the first piston can reciprocate on the inside of the pressure control groove 27 synchronously with the control plate 24, realize the diversion of the air inside the pressure stabilizing chamber 28, and then realize the driving of the adsorption-type iron removal unit 5, so that the adsorption-type iron removal unit 5 can fully absorb the iron blocks inside the sand and gravel to avoid waste.

[0024] In one embodiment of the present invention, please refer to Figure 6 The reciprocating knocking assembly 9 includes: a lifting plate 31, a steering tooth 32, a rotating rod 33, a flip wheel 34, a fixed rod 35, a knocking rod 36 and a rotating wheel 37. The lifting plate 31 is slidably connected to the shell wall of the support seat 10 and is threadedly connected to the regulating rod 11. The bottoms of both ends of the lifting plate 31 are fixedly connected with steering teeth 32. The outer side of the steering tooth 32 is provided with a rotating rod 33 rotatably connected to the support seat 10. The outer side of the rotating rod 33 is fixedly connected with a flip wheel 34. The flip wheel 34 is meshedly connected with the steering tooth 32 on the same side, and is used to cooperate with the movement of the lifting plate 31 to realize the reciprocating rotation of the rotating rod 33. Fixed rods 35 are fixedly connected on both sides of the rotating rod 33. A knocking rod 36 is slidably connected to the inner side of the other end of the fixed rod 35. A spring is fixedly connected between the knocking rod 36 and the fixed rod 35. A rotating wheel 37 is rotatably connected to the inner side of the other end of the knocking rod 36, which is used to cooperate with the rotation of the rotating rod 33 to realize knocking on the movable frame 14.

[0025] In this embodiment, the lifting plate 31 is threadedly connected to the regulating rod 11, and the two sides are slidably connected to the shell wall of the support seat 10. The rotating rod 33 is symmetrically arranged at the bottom of both ends of the lifting plate 31 and is rotatably connected to the support seat 10. A fixing rod 35 is arranged between the rotating rod 33 and the screen frames 16 on both sides. The fixing rod 35 is fixedly connected to the rotating rod 33. As the regulating rod 11 rotates alternately clockwise and counterclockwise, the regulating rod 11 drives the lifting plate 31 to reciprocate up and down along the shell wall of the support seat 10, and the lifting plate 31 drives the steering gear 32 to move synchronously, cooperating with the flip wheel 34 drives the rotating rod 33 to rotate alternately clockwise and counterclockwise, and the rotating rod 33 drives the knocking rod 36 to move through the fixed rod 35. The knocking rods 36 on both sides knock on the movable frame 14 respectively. On the one hand, it can improve the screening efficiency of the screen frame 16, and on the other hand, it can make the sand and gravel inside the screen frame 16 jump, which is convenient for the adsorption-type iron removal unit 5 to absorb the iron blocks inside the sand and gravel, thereby ensuring the effectiveness of iron removal. By setting a reciprocating knocking component 9, the movable frame 14 can be knocked in conjunction with the rotation of the regulating rod 11, which can not only improve the screening efficiency of the equipment, but also improve the iron removal effect of the equipment.

[0026] In one embodiment of the present invention, please refer to Figure 2 and Figure 7The air control and dust collection unit 6 includes: an air control box 38, a dust collection box 39, an air delivery pipe 40, an air suction pipe 41, a support rod 42, a fan 43 and a dust removal frame 46. The air control box 38 is fixedly connected to the inner side of the support base 2. A support rod 42 is rotatably connected to the bottom wall of the air control box 38. The support rod 42 is fixedly connected to the fan 43 arranged inside the air control box 38, and is connected to the power rod 22 through a power transmission member. Both sides of the air control box 38 are provided with a support rod 42 connected to the support base. 2, a dust collecting box 39 is fixedly connected, a dust removal frame 46 is fixedly connected inside the dust collecting box 39, the dust collecting box 39 is connected to the top box wall of the air control box 38 through an air delivery pipe 40, the other end box wall of the dust collecting box 39 is connected to an air suction pipe 41, and the air suction pipe 41 is connected to a dust suction cavity arranged inside the support base 10, a plurality of dust suction pipes connected to the dust suction cavity are fixedly connected on the top shell wall of the support base 10, and a plurality of exhaust pipes are also fixedly connected on the bottom box wall of the air control box 38.

[0027] In this embodiment, the power transmission part includes a pulley fixedly connected to the outside of the power rod 22 and the support rod 42, and the pulleys are connected by belts. The dust suction pipe is symmetrically arranged on both sides of the top of the support seat 10 and is fixedly connected to the support seat 10. The power rod 22 drives the support rod 42 to rotate through the pulley and the belt, and the support rod 42 drives the fan 43 to rotate. The dust suction pipe 41 absorbs dust in the air, and the dust enters the inner side of the dust collecting box 39 along the dust suction cavity and the suction pipe 41. The dust removal frame 46 filters the dust. The air after dust removal enters the inner side of the air control box 38 along the air supply pipe 40 and is discharged from the exhaust pipe. By setting the air control dust collection unit 6, it can cooperate with the multi-drive control component 8 to realize the absorption of dust generated during screening, and can collect dust to avoid dust diffusion, thereby greatly improving the environmental protection performance in the sand and gravel screening process.

[0028] In one embodiment of the present invention, the air-controlled dust collection unit 6 also includes: a cleaning brush 44 and a connecting slide rod 45. The cleaning brush 44 is arranged between the dust removal frame 46 and the air intake pipe 41, and abuts against the dust removal frame 46. A connecting slide rod 45 is fixedly connected to the outer side of the cleaning brush 44. The other end of the connecting slide rod 45 passes to the outside of the dust collection box 39 and is fixedly connected to the transmission and control plate 24. The connecting slide rod 45 is slidably connected to the wall of the dust collection box 39, so as to cooperate with the movement of the transmission and control plate 24 to realize the cleaning of the dust removal frame 46.

[0029] In this embodiment, the cleaning brush 44 is arranged in contact with the outside of the dust removal frame 46, and a connecting slide rod 45 is fixedly connected between the cleaning brush 44 and the transmission and control plate 24. The connecting slide rod 45 is slidably connected to the box wall of the dust box 39. In addition, a sealing ring is fixedly connected on the inner side of the connection between the box wall of the dust box 39 and the connecting slide rod 45. By arranging the cleaning brush 44, the dust removal frame 46 can be automatically cleaned in coordination with the movement of the transmission and control plate 24, thereby avoiding dust accumulation on the dust removal frame 46 and ensuring the effectiveness of dust removal of the equipment.

[0030] In one embodiment of the present invention, please refer to Figure 8 The adsorption-type iron removal unit 5 includes: a sensing seat 47, a sensing groove 48, a voltage-stabilizing tube 49, an adsorption plate 51 and a positioning guide plate 52. The sensing seat 47 is fixedly connected to the outside of the protective cover 1, and a sensing groove 48 is arranged on the inside of the sensing seat 47. The voltage-stabilizing tube 49 is fixedly connected to the sensing seat 47, and one end is connected to the sensing groove 48, and the other end is connected to the multi-element drive-control component 8. A pressure sensing part 50 is slidably connected to the inside of the sensing groove 48. An adsorption plate 51 is arranged on the outside of the screen frame 16. The adsorption plate 51 is connected to the pressure sensing part 50 to realize the adsorption of iron blocks in sand and gravel. The adsorption plate 51 is slidably connected to the positioning guide plate 52 fixedly connected to the protective cover 1, and the bottom end of the adsorption plate 51 is fixedly connected to the pressure sensing part 50 to cooperate with the multi-element drive-control component 8 to realize the reciprocating motion of the adsorption plate 51.

[0031] In this embodiment, the adsorption plate 51 is arranged on the outer side of the top of the placement groove on both sides, and the adsorption plate 51 is made of magnetic material. The pressure sensing component 50 includes a second piston slidably connected to the inner side of the sensing groove 48 and a second push rod fixedly connected to the second piston. The other end of the second push rod is connected to the adsorption plate 51 by bolts. The positioning guide plate 52 can cooperate with the protective cover 1 to support and guide the adsorption plate 51. By setting the adsorption type iron removal unit 5, as the first piston moves inside the pressure control groove 27, the air inside the pressure stabilizing chamber 28 enters the inner side of the sensing groove 48 along the pressure stabilizing tube 49, driving the second piston to move inside the sensing groove 48, and then driving the adsorption plate 51 to reciprocate along the positioning guide plate 52. During the movement, the iron blocks jumping on the inner side of the screen frame 16 are adsorbed. When unloading, the adsorption plate 51 is removed, and the adsorbed iron blocks are scraped off by a scraper, thereby completing the recovery of the iron blocks and avoiding waste of resources.

[0032] The sand and gravel screening device for highway tunnel engineering, by setting a multi-station synchronous screening unit 3, cooperating with the air-controlled dust collection unit 6 and the adsorption-type iron removal unit 5, can not only perform multi-station synchronous screening on sand and gravel, but also perform multi-station synchronous screening on sand and gravel of different particle sizes according to needs, which greatly improves the screening efficiency and the flexibility of the equipment when in use, and can also complete the timely absorption of dust during the screening process, and can recover the iron blocks in the sand and gravel, avoiding waste of resources and reducing damage to the environment. By setting a plurality of synchronous screening components 7, it can cooperate with the said multiple The multi-drive control component 8 can realize the multi-station synchronous screening of sand and gravel, thereby improving the screening efficiency of the equipment, and can screen different particle sizes at two stations according to needs, improving the flexibility of the equipment when in use, facilitating people to carry out subsequent processing, and enhancing the diversity of the equipment. By setting the multi-drive control component 8, the power source 21 drives the power rod 22 to rotate, and the power rod 22 can complete the driving of the air control dust collection unit 6 when rotating. The power rod 22 can also drive the eccentric wheel 23 to rotate, and the eccentric wheel 23 can push the transmission control plate 24 to move, and cooperate with the first piston and the transmission seat 26. The spring between can realize the reciprocating motion of the transmission plate 24, and the transmission plate 24 drives the control tooth 25 to move. The control tooth 25 cooperates with the rotating wheel 12 to realize the rotation of the regulating rod 11, thereby realizing the shaking of the screen frame 16, and the first piston can reciprocate on the inner side of the pressure control groove 27 synchronously with the transmission plate 24, thereby realizing the diversion of the air inside the pressure stabilizing chamber 28, thereby realizing the driving of the adsorption-type iron removal unit 5, so that the adsorption-type iron removal unit 5 can fully absorb the iron blocks inside the sand and gravel to avoid waste. By setting a reciprocating knocking component 9, it can cooperate with the regulating rod 11 The rotation of the movable frame 14 can achieve the knocking of the movable frame 14, which can not only improve the screening efficiency of the equipment, but also improve the iron removal effect of the equipment. By setting the air control dust collection unit 6, it can cooperate with the multi-element drive control component 8 to absorb the dust generated during screening, and can collect the dust to avoid dust diffusion, which greatly improves the environmental protection performance in the sand and gravel screening process. By setting the adsorption iron removal unit 5, the iron blocks jumping on the inside of the screen frame 16 can be adsorbed. When unloading, the adsorption plate 51 is removed, and the adsorbed iron blocks are scraped off with a scraper, thereby completing the recovery of the iron blocks and avoiding waste of resources.

[0033] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A sand and gravel screening device for highway tunnel engineering, characterized in that: include: Support base; A protective cover, the protective cover is fixedly connected to the outer side of the top end of the support base; A multi-station synchronous screening unit, which is arranged inside the protective cover and connected to the support base, and is used for performing multi-station synchronous screening of sand and gravel of different particle size levels; A recovery box, which is arranged between the multi-station synchronous screening unit and the supporting base, plugged with the protective cover, and used to cooperate with the multi-station synchronous screening unit to receive and store the screened sand and gravel; An air-controlling dust-collecting unit, which is arranged on the inner side of the supporting base and connected to the multi-station synchronous screening unit, and is used to cooperate with the multi-station synchronous screening unit to absorb and collect the scattered dust; An adsorption-type iron removal unit, which is arranged outside the multi-station synchronous screening unit, connected to the protective cover and the multi-station synchronous screening unit, and is used to cooperate with the multi-station synchronous screening unit to absorb metal impurities in sand and gravel; Among them, the multi-station synchronous screening unit includes: multiple synchronous screening components, multiple drive control components and reciprocating knocking components. The multiple synchronous screening components are arranged on the inner side of the protective cover and fixedly connected to the support base. The multiple drive control components are arranged on the inner side of the support base. The multiple drive control components are connected to the multiple synchronous screening components to drive the multiple synchronous screening components to perform multi-station synchronous screening of sand and gravel with different particle size levels. The multiple drive control components are also connected to the air control dust collection unit and the adsorption-type iron removal unit. The multiple synchronous screening components are also provided with reciprocating knocking components, which are connected to the multiple synchronous screening components to cooperate with the multiple synchronous screening components to realize knocking on the equipment.

2. The sand and gravel screening device for highway tunnel engineering according to claim 1, characterized in that: The multiple synchronous screening components include: a support seat, a regulating rod, a rotating wheel, a control wheel, a movable frame, a screen frame, a block and an adjusting tooth. The support seat is arranged on the inner side of the protective cover, and the bottom end is fixedly connected to the support base. The movable frame passes through the support seat and is slidably connected to the support seat. Positioning slide grooves are arranged on the outer walls on both sides of the movable frame. The inner side of the positioning slide groove is slidably connected to a positioning slider fixedly connected to the support seat. The movable frame is symmetrically provided with placement grooves, and the placement grooves are arranged on both sides of the support seat. The screen frame is plugged into the placement grooves. A plurality of blocks are provided on the frame wall of the movable frame in a sliding connection, a spring is fixedly provided between the block and the movable frame, a slot engaged with the block is provided on the outer wall of the screen frame, the regulating rod is rotatably connected to the support seat, a rotating wheel connected to the multi-drive control component is fixedly provided on the outer side of the bottom end, a control wheel is also fixedly provided on the outer side of the regulating rod, the control wheel is meshed with regulating teeth fixedly provided on the inner side of the movable frame, and is used for cooperating with the multi-drive control component to drive the movable frame to reciprocate, thereby realizing rapid screening of sand and gravel located inside the screen frame.

3. The sand and gravel screening device for highway tunnel engineering according to claim 2, characterized in that: The multi-element drive control component includes: a power source, a power rod, an eccentric wheel, a transmission control plate, a control tooth, a transmission seat, a pressure control groove, a pressure stabilizing chamber and a pressure control member. The power source is fixedly connected to the top of the inner side of the support base, and the power source output end is fixedly connected to the outer side of the power rod connected to the air control dust collection unit. The eccentric wheel is also fixedly connected to the outer side of the power rod. The transmission control plate slidably connected to the inner wall of the support base is abutted on the outer side of the eccentric wheel. The transmission control plate is fixedly connected to the outer side of one end away from the power rod, and the control tooth is meshed with the rotating wheel. A transmission seat fixedly connected to the support base is also provided on the outer side of the transmission plate, and a plurality of pressure control grooves are provided on the inner side of the transmission seat. A pressure-stabilizing chamber connected to each pressure control groove is also provided on the inner side of the transmission seat. The pressure-stabilizing chamber is also connected to the adsorption-type iron removal unit. A pressure control piece fixedly connected to the transmission plate is provided in a sliding connection on the inner side of the pressure control groove. A reset piece is fixedly connected between the pressure control piece and the transmission seat, which is used to cooperate with the rotation of the eccentric wheel to drive the transmission plate to reciprocate, realize the rotation of the regulating rod, and complete the driving of the adsorption-type iron removal unit.

4. The sand and gravel screening device for highway tunnel engineering according to claim 3, characterized in that: The reciprocating knocking assembly comprises: a lifting plate, a steering tooth, a rotating rod, a flip wheel, a fixed rod, a knocking rod and a rotating wheel. The lifting plate is slidably connected to the shell wall of the support seat and is threadedly connected to the regulating rod. The bottoms of both ends of the lifting plate are fixedly connected with steering teeth, the outer side of the steering tooth is provided with a rotating rod rotatably connected to the support seat, the outer side of the rotating rod is fixedly connected with a flip wheel, and the flip wheel is meshed with the steering tooth on the same side, so as to cooperate with the movement of the lifting plate to realize the reciprocating rotation of the rotating rod, the fixing rods are fixedly connected on both sides of the rotating rod, and a knocking rod is slidably connected to the inner side of the other end of the fixed rod, a spring is fixedly connected between the knocking rod and the fixed rod, and the inner side of the other end of the knocking rod is rotatably connected with a rotating wheel, so as to cooperate with the rotation of the rotating rod to realize the knocking of the movable frame.

5. The sand and gravel screening device for highway tunnel engineering according to claim 4, characterized in that: The air control dust collection unit comprises: an air control box, a dust collecting box, an air supply pipe, an air suction pipe, a support rod, a fan and a dust removal frame, the air control box being fixedly connected to the inner side of the support base, a support rod being rotatably connected to the box wall at the bottom end of the air control box, the support rod being fixedly connected to the fan arranged on the inner side of the air control box, and being connected to the power rod through a power transmission member, dust collecting boxes fixedly connected to the support base are arranged on both sides of the air control box, a dust removal frame is fixedly connected to the inner side of the dust collecting box, the dust collecting box is connected to the top box wall of the air control box through an air supply pipe, the box wall at the other end of the dust collecting box is connected to the air suction pipe, the air suction pipe is connected to the dust suction chamber arranged on the inner side of the support seat, a plurality of dust suction pipes connected to the dust suction chamber are fixedly connected to the shell wall at the top end of the support seat, and a plurality of exhaust pipes are also fixedly connected to the box wall at the bottom end of the air control box.

6. The sand and gravel screening device for highway tunnel engineering according to claim 5, characterized in that: The air-controlled dust collection unit also includes: a cleaning brush and a connecting slide rod. The cleaning brush is arranged between the dust removal frame and the air intake pipe and abuts against the dust removal frame. A connecting slide rod is fixedly connected to the outer side of the cleaning brush. The other end of the connecting slide rod leads to the outer side of the dust collection box and is fixedly connected to the transmission and control plate. The connecting slide rod is slidably connected to the wall of the dust collection box to cooperate with the movement of the transmission and control plate to realize the cleaning of the dust removal frame.

7. The sand and gravel screening device for highway tunnel engineering according to claim 2, characterized in that: The adsorption-type iron removal unit includes: a sensing seat, a sensing groove, a voltage-stabilizing tube, an adsorption plate and a positioning guide plate. The sensing seat is fixedly connected to the outside of the protective cover, and a sensing groove is arranged on the inside of the sensing seat. The voltage-stabilizing tube is fixedly connected to the sensing seat, and one end is connected to the sensing groove, and the other end is connected to the multi-element drive-control component. A pressure sensing part is slidingly connected to the inside of the sensing groove, and an adsorption plate is arranged on the outside of the screen frame for realizing the adsorption of iron blocks in sand and gravel. The adsorption plate is slidably connected to the positioning guide plate fixedly connected to the protective cover, and the bottom end of the adsorption plate is fixedly connected to the pressure sensing part, which is used to cooperate with the multi-element drive-control component to realize the reciprocating motion of the adsorption plate.

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