Stone crushing and screening device for engineering
By installing splash guards and buffer plates in the stone crushing and screening device, combined with a multi-stage screening mechanism, the problem of stones directly impacting the crushing rollers is solved, thus protecting the crushing rollers and achieving fine screening of the stones, thereby improving the service life and screening effect of the device.
Patent Information
- Application Number
- CN202520054320.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing stone crushing and screening devices used in engineering projects cause damage to the crushing rollers due to direct impact of stones during crushing, affecting the service life of the rollers and resulting in insufficient screening.
A splash guard and a buffer plate are installed at the feed inlet to reduce the impact force of the stones. After crushing, a multi-stage screen plate and a convex tube shaking screening mechanism are installed to achieve buffering and multi-stage screening of the stones.
It effectively protects the crushing rollers, extends their service life, and enables fine multi-stage screening of stones, improving the quality and specification conformity of the stone.
Smart Images
Figure CN223788586U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to engineering construction technical field, especially, relate to a stone block crushing and screening device for engineering. BACKGROUND
[0002] In modern engineering construction, stone block as a kind of basic raw material, is widely used in road construction, bridge construction, construction engineering, mineral resources development and other fields, stone block crushing and screening are essential links in production and use process, especially in large-scale construction and road engineering, the quality and specification requirements of stone are very high, to meet these needs, stone block crushing and screening device for engineering gradually becomes one of the core equipment in stone processing industry.
[0003] When crushing stone block, stone block is put into from the inlet, then crushing stone block, but some stone block crushing and screening device for engineering usually directly drops stone block on crushing roller when crushing stone block, which makes the impact force of stone block on crushing roller larger, easily causes damage to crushing roller, thereby affecting the service life of crushing roller, therefore we propose a stone block crushing and screening device for engineering. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a stone block crushing and screening device for engineering, by setting splash plate at inlet, prevent stone block from splashing when crushing stone block, then setting buffer plate at inlet, reduce the impact force of stone block, solve the problem of damage to crushing roller due to stone block directly falling on crushing roller.
[0005] To solve the above technical problem, the utility model is realized by the following technical scheme:
[0006] The utility model relates to a stone block crushing and screening device for engineering, including the box, the inside of the box is provided with crushing mechanism, the bottom of crushing mechanism is provided with screening mechanism, the crushing mechanism includes support seat, the outer wall of support seat is fixedly connected with the outer wall of box, the top of support seat is fixedly connected with first motor, the bottom output of first motor is fixedly connected with rotating shaft no.
[0007] Through the technical scheme, the crushing roller one and the crushing roller two are driven to rotate by the rotating shaft one and the driven shaft one, so that the stone is rotated.
[0008] Further, the inner wall of the box is fixedly connected with a fixed rod, the outer surface of the fixed rod is rotatably connected with a splash plate, the outer wall of the box is fixedly connected with a feeding port, the inner wall of the box is provided with a sliding groove, the sliding groove is provided with a plurality of sliding grooves, the inside of the box is provided with a damping groove, the damping groove is provided with a plurality of damping grooves, the inner wall of the sliding groove is slidably connected with a sliding block, and the bottom of the sliding block is fixedly connected with a sliding rod.
[0009] Through the technical scheme, the fixed rod is arranged in the box, and the splash plate is arranged on the fixed rod, so that the stone is prevented from splashing out and causing harm to the workers during the crushing of the stone.
[0010] Further, the sliding rod extends through the inner wall of the sliding groove and extends to the inside of the damping groove, the end of the sliding rod away from the sliding block is fixedly connected with a sliding plate, the outer wall of the sliding plate is slidably connected with the inner wall of the damping groove, the bottom of the sliding block is fixedly connected with a first spring, the end of the first spring away from the sliding block is fixedly connected with the inner wall of the sliding groove, the sliding rod is located on the inside of the first spring, the outer wall of the sliding block is fixedly connected with a buffer plate, the inner wall of the box is fixedly connected with a guide plate, and the guide plate is provided with two guide plates.
[0011] Through the technical scheme, the buffer plate is arranged in the feeding port, so that the stone is buffered, and the crushing roller is prevented from being damaged.
[0012] Further, the screening mechanism comprises a protection plate, the outer wall of the protection plate is fixedly connected with the outer wall of the box, the inner wall of the protection plate is fixedly connected with a second motor, the bottom output end of the second motor is fixedly connected with a rotating shaft two through a shaft coupling, the outer surface of the rotating shaft two is fixedly connected with a belt pulley one, the outer surface of the belt pulley one is transmissionally connected with a belt, the end of the belt away from the belt pulley one is rotatably connected with a belt pulley two, and the outer wall of the belt pulley two is fixedly connected with a driven shaft two.
[0013] Through the technical scheme, the belt is arranged on the belt pulley one, so that the rotating shaft two drives the driven shaft two to rotate.
[0014] Further, the rotating shaft two extends through the outer wall of the box and extends to the inner wall, the outer wall of the rotating shaft two is fixedly connected with a convex pipe one, the driven shaft two extends through the outer wall of the box and extends to the inner wall, the outer surface of the driven shaft two is fixedly connected with a convex pipe two, the inner wall of the box is fixedly connected with a locking rod, the locking rod is provided with two locking rods, the outer surface of the locking rod is rotatably connected with a rotating ring, the outer wall of the rotating ring is fixedly connected with a sieve plate, and the inner wall of the box is provided with an arc-shaped groove.
[0015] The above technical solution achieves the effect of shaking the sieve plate by setting a convex tube on the driven shaft.
[0016] Furthermore, several arc-shaped grooves are provided, an arc-shaped rod is fixedly connected to the inner wall of the arc-shaped groove, a second spring is fixedly connected to the inner wall of the arc-shaped groove, an arc-shaped ring is fixedly connected to the end of the second spring away from the arc-shaped groove, the outer wall of the arc-shaped ring is fixedly connected to the outer wall of the sieve plate, the inner wall of the arc-shaped ring is slidably connected to the outer surface of the arc-shaped rod, the arc-shaped rod is located inside the second spring, a discharge plate is fixedly connected to the inner wall of the box, two discharge plates are provided, a discharge port one is opened at the bottom of the box, a discharge port two is fixedly connected to the outer wall of the box, and a discharge port three is fixedly connected to the outer wall of the box.
[0017] The above technical solution achieves the effect of multiple screenings of crushed stones by setting up multiple sieve plates and discharge ports.
[0018] This utility model has the following beneficial effects:
[0019] 1. This utility model, by setting a buffer plate, when it is necessary to crush stones, firstly, the first motor is started to drive the first rotating shaft to rotate, causing the first crushing roller to rotate. At the same time, the first rotating shaft drives the driving gear to rotate. When the driving gear rotates, it drives the driven gear meshing with the driving gear to rotate. The driven gear drives the second crushing roller on the driven shaft to rotate, crushing the stones entering from the feed inlet. When the stones enter the box from the feed inlet, their own weight pushes the splash guard on the fixed rod into the box. When they enter the box, they fall onto the buffer plate. On the plate, the weight of the stones causes the buffer plate to move the slider inside the groove. When the slider moves downward, it causes the slide rod below the slider to slide, which in turn causes the slide plate damping groove at the bottom of the slide rod to slide. At the same time, when the slider moves downward, it causes the first spring below it to be compressed. Then, some of the stones will fall onto the guide plate, and then the stones on the buffer plate will fall onto crushing roller one and crushing roller two, where they will be crushed. This achieves the buffering effect, preventing excessively heavy stones from falling directly onto crushing roller one and crushing roller two and causing damage, thus improving the service life of the crushing rollers.
[0020] 2. The utility model discloses a sieve plate is provided, when needing to sieve the stone piece of broken completion, the stone piece after crushing first falls on the sieve plate, at this moment, the second motor is started and drives the rotation shaft no. 2 to rotate, and the rotation shaft no. 2 drives the belt pulley no. 1 to rotate, at this moment, the belt that is wound on the outer surface of the belt pulley no. 1 and the belt pulley no. 2 can drive the belt pulley no. 2 to rotate, and the belt pulley no. 2 rotates and drives the convex pipe no. 2 on the driven shaft no. 2 to rotate, and the sieve plate above is shaken, and the rotation shaft no. 2 rotates and also drives the convex pipe no. 1 to rotate, and the sieve plate below is shaken, when the sieve plate is shaken, the sieve plate slides on the arc-shaped rod in the arc-shaped groove with the arc-shaped ring, and the arc-shaped ring is extruded the second spring when shaking, and the second spring repeats the state of extrusion and rebound, and the sieve plate is buffered, when the sieve plate is shaken up and down, the rotating ring is rotated on the locking rod, and the stone piece of different sizes is screened out through the sieve plate, the larger stone piece is screened from the discharge port no. 2, the smaller stone piece is screened from the discharge port no. 3, and the smallest stone piece falls on the discharge plate from the sieve plate and is screened from the discharge port no. 1, which realizes the effect that the stone piece of different sizes is more carefully screened.
[0021] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.
[0023] Figure 1 It is the whole structure schematic diagram of the utility model;
[0024] Figure 2 It is the crushing mechanism structure schematic diagram of the utility model;
[0025] Figure 3 It is the inlet structure schematic diagram of the utility model;
[0026] Figure 4 It is the buffer plate structure schematic diagram of the utility model;
[0027] Figure 5 It is the screening mechanism structure schematic diagram of the utility model;
[0028] Figure 6 It is the arc-shaped ring structure schematic diagram of the utility model.
[0029] In the drawings, the component list represented by each sign is as follows:
[0030] 101, box; 2, crushing mechanism; 201, support seat; 202, first motor; 203, rotating shaft one; 204, driving gear; 205, driven gear; 206, driven shaft one; 207, crushing roller one; 208, crushing roller two; 209, fixed rod; 210, splash plate; 211, inlet; 212, chute; 213, sliding block; 214, sliding rod; 215, first spring; 216, damping groove; 217, sliding plate; 218, buffer plate; 219, guide plate; 3, screening mechanism; 301, protection plate; 302, second motor; 303, rotating shaft two; 304, pulley one; 305, pulley two; 306, belt; 307, driven shaft two; 308, convex tube one; 309, locking rod; 310, rotating ring; 311, arc-shaped groove; 312, arc-shaped rod; 313, second spring; 314, arc-shaped ring; 315, sieve plate; 316, discharge plate; 317, discharge port one; 318, discharge port two; 319, discharge port three; 320, convex tube two. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0032] Please refer to Figures 1-6The utility model discloses an engineering stone block crushing and screening device, which comprises a box body 101, a crushing mechanism 2 arranged in the box body 101, and a screening mechanism 3 arranged at the bottom of the crushing mechanism 2. The crushing mechanism 2 comprises a support seat 201, the outer wall of the support seat 201 is fixedly connected with the outer wall of the box body 101, the first motor 202 is supported by the support seat 201, and when the first motor 202 is started, the rotating shaft one 203 is driven to rotate, thereby achieving the effect that the rotating shaft one 203 drives the driving gear 204 to rotate. The first motor 202 is fixedly connected to the top of the support seat 201, the rotating shaft one 203 is fixedly connected to the bottom output end of the first motor 202 through a shaft coupling, the driving gear 204 is fixedly connected to the outer surface of the rotating shaft one 203, the rotating shaft one 203 penetrates through the outer wall of the box body 101 and extends to the inner wall, the rotating shaft one 203 is arranged at the output end of the first motor 202, and the rotating shaft one 203 rotates in the box body 101, thereby driving the crushing roller one 207 on the rotating shaft one 203 to rotate. The crushing roller one 207 is fixedly connected to the outer surface of the end of the rotating shaft one 203 away from the first motor 202, the driven shaft one 206 is rotatably connected to the outer wall of the box body 101, the driven shaft one 206 penetrates through the box body 101 and extends to the inner wall, the driven shaft one 206 is arranged on the outer wall of the box body 101, and the driven shaft one 206 is rotatably connected to the inner wall of the box body 101, thereby supporting the driven shaft one 206. When the driven shaft one 206 rotates, the crushing roller two 208 on the driven shaft one 206 also rotates, thereby crushing the stone block. The driven gear 205 is fixedly connected to the outer surface of the driven shaft one 206, the outer wall of the driving gear 204 is engaged with the outer wall of the driven gear 205, the crushing roller two 208 is fixedly connected to the outer wall of the end of the driven shaft one 206 away from the driven gear 205, the driven gear 205 is arranged on the driven shaft one 206, when the driving gear 204 rotates with the rotating shaft one 203, the driving gear 204 drives the driven gear 205 to rotate, and the driven gear 205 drives the driven shaft one 206 to rotate, thereby making the crushing roller one 207 and the crushing roller two 208 rotate to crush the stone block. The fixed rod 209 is fixedly connected to the inner wall of the box body 101, the splash plate 210 is rotatably connected to the outer surface of the fixed rod 209, the feeding port 211 is fixedly connected to the outer wall of the box body 101, the splash plate 210 is supported by the fixed rod 209 arranged on the inner wall of the box body 101, the stone block enters from the feeding port 211, the splash plate 210 is driven to rotate on the fixed rod 209 by the weight of the stone block, and then the stone block enters the box body 101.
[0033] The inner wall of the box body 101 is provided with a plurality of sliding grooves 212, and the inner part of the box body 101 is provided with a plurality of damping grooves 216. The sliding grooves 212 are arranged to support the sliding blocks 213, so that the sliding blocks 213 can slide in the sliding grooves 212. The inner wall of the sliding groove 212 is slidably connected with the sliding block 213. The bottom of the sliding block 213 is fixedly connected with a sliding rod 214. The sliding rod 214 penetrates the inner wall of the sliding groove 212 and extends into the damping groove 216. The sliding rod 214 is arranged at the bottom of the sliding block 213. When the sliding block 213 slides in the sliding groove 212, the sliding rod 214 also slides downward, so that the sliding block 213 can slide more easily in the sliding groove 212. One end of the sliding rod 214, away from the sliding block 213, is fixedly connected with a sliding plate 217. The outer wall of the sliding plate 217 is slidably connected with the inner wall of the damping groove 216. The bottom of the sliding block 213 is fixedly connected with a first spring 215. One end of the first spring 215, away from the sliding block 213, is fixedly connected with the inner wall of the sliding groove 212. The sliding plate 217 is arranged at the bottom of the sliding rod 214. When the sliding block 213 slides downward in the damping groove 216, the sliding plate 217 also slides in the damping groove 216. At the same time, the sliding block 213 presses the first spring 215 downward, so as to buffer the sliding block 213. The sliding rod 214 is located inside the first spring 215. The outer wall of the sliding block 213 is fixedly connected with a buffer plate 218. The inner wall of the box body 101 is fixedly connected with two guide plates 219. The buffer plate 218 is arranged at the outer wall of the sliding block 213. When the stone falls on the buffer plate 218, the stone is buffered, so that the stone cannot directly fall on the crushing roller one 207, thereby protecting the crushing roller one 207.
[0034] The screening mechanism 3 comprises a protection plate 301, the outer wall of the protection plate 301 is fixedly connected with the outer wall of the box body 101, the inner wall of the protection plate 301 is fixedly connected with a second motor 302, the bottom output end of the second motor 302 is fixedly connected with a rotating shaft two 303 through a shaft coupling, the second motor 302 is protected by being arranged on the protection plate 301, starting the second motor 302 will rotate the rotating shaft two 303, the outer surface of the rotating shaft two 303 is fixedly connected with a belt pulley one 304, the outer surface of the belt pulley one 304 is drivingly connected with a belt 306, one end, away from the belt pulley one 304, of the belt 306 is rotatably connected with a belt pulley two 305, the outer wall of the belt pulley two 305 is fixedly connected with a driven shaft two 307, the belt pulley one 304 is arranged on the rotating shaft two 303, when the belt pulley one 304 rotates, the belt 306 drives the belt pulley two 305 to rotate, the belt pulley two 305 rotates with the driven shaft two 307, the rotating shaft two 303 penetrates through the outer wall of the box body 101 and extends to the inner wall, the outer wall of the rotating shaft two 303 is fixedly connected with a convex pipe one 308, the driven shaft two 307 penetrates through the outer wall of the box body 101 and extends to the inner wall, the outer surface of the driven shaft two 307 is fixedly connected with a convex pipe two 320, the convex pipe one 308 is arranged on the rotating shaft two 303, when the convex pipe one 308 rotates, the sieve plate 315 shakes, facilitating subsequent screening of broken stone, the inner wall of the box body 101 is fixedly connected with a locking rod 309, the locking rod 309 is provided with two, the outer surface of the locking rod 309 is rotatably connected with a rotating ring 310, the outer wall of the rotating ring 310 is fixedly connected with a sieve plate 315, the locking rod 309 is arranged inside the box body 101, when the sieve plate 315 shakes, the sieve plate 315 drives the rotating ring 310 to rotate on the locking rod 309, and the sieve plate 315 is positioned, arc-shaped grooves 311 are formed in the inner wall of the box body 101, the arc-shaped grooves 311 are provided with a plurality of arc-shaped rods 312, the inner wall of the arc-shaped groove 311 is fixedly connected with a second spring 313, the arc-shaped grooves 311 are formed in the box body 101, so that the arc-shaped ring 314 slides on the arc-shaped rod 312 in the arc-shaped groove 311, when the convex pipe one 308 shakes the sieve plate 315, the sieve plate 315 slides with the arc-shaped ring 314 on the arc-shaped rod 312, one end, away from the arc-shaped groove 311, of the second spring 313 is fixedly connected with an arc-shaped ring 314, the outer wall of the arc-shaped ring 314 is fixedly connected with the outer wall of the sieve plate 315, the inner wall of the arc-shaped ring 314 is slidably connected with the outer surface of the arc-shaped rod 312, the arc-shaped rod 312 is located on the inner side of the second spring 313, the second spring 313 is arranged on the arc-shaped rod 312, when the arc-shaped ring 314 slides on the arc-shaped rod 312, the second spring 313 is pressed, and the arc-shaped ring 314 is buffered, the inner wall of the box body 101 is fixedly connected with a discharge plate 316, the discharge plate 316 is provided with two, a discharge port one 317 is formed in the bottom of the box body 101,The outer wall of the box body 101 is fixedly connected with the discharge port two 318, the outer wall of the box body 101 is fixedly connected with the discharge port three 319, by setting the sieve plate 315, the stone is screened, the larger stone is screened from the discharge port two 318, the medium stone is screened from the discharge port three 319, and the smallest stone is screened from the discharge port one 317.
[0035] One specific application of the embodiment is:
[0036] When the stone needs to be crushed, first start the first motor 202 to drive the rotating shaft 203 to rotate, so that the crushing roller 207 rotates, and the rotating shaft 203 drives the driving gear 204 to rotate, and the driving gear 204 drives the driven gear 205 to rotate when the driving gear 204 rotates, and the driven gear 205 drives the crushing roller 208 on the driven shaft 206 to rotate, and the stone entering the inlet 211 is crushed, and when the stone enters the box 101, the splash plate 210 on the fixed rod 209 is pushed into the box 101 by its own weight, and when it enters the box 101, it falls on the buffer plate 218, and the weight of the stone makes the buffer plate 218 drive the sliding block 213 to slide in the sliding groove 212, and when the sliding block 213 slides downward, the sliding rod 214 below the sliding block 213 slides, so that the sliding plate 217 at the bottom of the sliding rod 214 slides in the damping groove 216, and when the sliding block 213 slides downward, the first spring 215 below the sliding block 213 is compressed, and then part of the stone falls on the guide plate 219, and then the stone on the buffer plate 218 falls on the crushing roller 207 and the crushing roller 208, and the stone is crushed, achieving the effect of buffering, preventing the heavy stone from directly falling on the crushing roller 207 and the crushing roller 208, and improving the service life of the crushing roller. When the crushed stone needs to be screened, the crushed stone first falls on the screen plate 315, and then the second motor 302 is started to drive the rotating shaft 303 to rotate, and the rotating shaft 303 drives the belt pulley 304 to rotate, and the belt 306 wound around the outer surfaces of the belt pulley 304 and the belt pulley 305 drives the belt pulley 305 to rotate, and the belt pulley 305 drives the convex tube 320 on the driven shaft 307 to rotate, and the screen plate 315 above is shaken, and the rotating shaft 303 also drives the convex tube 308 to rotate, and the screen plate 315 below is shaken, and when the screen plate 315 is shaken, the arc-shaped ring 314 slides on the arc-shaped rod 312 in the arc-shaped groove 311, and the arc-shaped ring 314 squeezes the second spring 313 when it is shaken, so that the second spring 313 repeatedly squeezes and rebounds, and the screen plate 315 is buffered, and when the screen plate 315 is shaken up and down, the rotating ring 310 rotates on the locking rod 309, so that stones of different sizes are screened out through the screen plate 315, larger stones are screened out from the discharge port 318, smaller stones are screened out from the discharge port 319, and the smallest stones fall on the discharge plate 316 from the screen plate 315, and then are screened out from the discharge port 317, achieving the effect of more detailed screening of stones of different sizes.
[0037] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0038] The preferred embodiments of the utility model disclosed above are only used for helping to explain the utility model. The preferred embodiments do not describe all the details exhaustively, and also limit the utility model to only the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited only by the claims and the entire scope and equivalents thereof.
Claims
1. An engineering stone crushing and screening device, comprising a housing (101), characterized in that: The box (101) is equipped with a crushing mechanism (2) inside, and a screening mechanism (3) is provided at the bottom of the crushing mechanism (2); The crushing mechanism (2) includes a support base (201), the outer wall of which is fixedly connected to the outer wall of the housing (101). A first motor (202) is fixedly connected to the top of the support base (201). A rotating shaft (203) is fixedly connected to the bottom output end of the first motor (202) via a coupling. A drive gear (204) is fixedly connected to the outer surface of the rotating shaft (203). The rotating shaft (203) penetrates the outer wall of the housing (101) and extends to the inner wall. A crushing roller is fixedly connected to the outer surface of the end of the rotating shaft (203) away from the first motor (202). A driven shaft (206) is rotatably connected to the outer wall of the housing (101). The driven shaft (206) penetrates the housing (101) and extends to the inner wall. A driven gear (205) is fixedly connected to the outer surface of the driven shaft (206). The outer wall of the driving gear (204) meshes with the outer wall of the driven gear (205). A crushing roller (208) is fixedly connected to the outer wall of the end of the driven shaft (206) away from the driven gear (205). A fixing rod (209) is fixedly connected to the inner wall of the housing (101). A crushing roller (208) is rotatably connected to the outer surface of the fixing rod (209). A splash guard (210) is provided. An inlet (211) is fixedly connected to the outer wall of the housing (101). A sliding groove (212) is provided on the inner wall of the housing (101), and several sliding grooves (212) are provided. A damping groove (216) is provided inside the housing (101), and several damping grooves (216) are provided. A slider (213) is slidably connected to the inner wall of the sliding groove (212). A sliding rod (214) is fixedly connected to the bottom of the slider (213). The sliding rod (214) penetrates the inner wall of the sliding groove (212) and extends into the damping groove (216). The sliding rod (214) is far from... A slide plate (217) is fixedly connected to one end of the slider (213). The outer wall of the slide plate (217) is slidably connected to the inner wall of the damping groove (216). A first spring (215) is fixedly connected to the bottom of the slider (213). The end of the first spring (215) away from the slider (213) is fixedly connected to the inner wall of the slide groove (212). The slide rod (214) is located inside the first spring (215). A buffer plate (218) is fixedly connected to the outer wall of the slider (213). A guide plate (219) is fixedly connected to the inner wall of the box (101). There are two guide plates (219).
2. The engineering stone crushing and screening device according to claim 1, characterized in that, The screening mechanism (3) includes a protective plate (301), the outer wall of the protective plate (301) is fixedly connected to the outer wall of the box (101), and a second motor (302) is fixedly connected to the inner wall of the protective plate (301). The bottom output end of the second motor (302) is fixedly connected to a rotating shaft (303) through a coupling.
3. The engineering stone crushing and screening device according to claim 2, characterized in that, The outer surface of the rotating shaft 2 (303) is fixedly connected to the pulley 1 (304), and the outer surface of the pulley 1 (304) is connected to the belt (306).
4. The engineering stone crushing and screening device according to claim 3, characterized in that, The end of the belt (306) away from the pulley one (304) is rotatably connected to the pulley two (305), and the outer wall of the pulley two (305) is fixedly connected to the driven shaft two (307).
5. The engineering stone crushing and screening device according to claim 4, characterized in that, The second rotating shaft (303) penetrates the outer wall of the housing (101) and extends to the inner wall. A convex tube (308) is fixedly connected to the outer wall of the second rotating shaft (303). The second driven shaft (307) penetrates the outer wall of the housing (101) and extends to the inner wall. A convex tube (320) is fixedly connected to the outer surface of the second driven shaft (307).
6. The engineering stone crushing and screening device according to claim 5, characterized in that, The inner wall of the box (101) is fixedly connected with a locking rod (309), and there are two locking rods (309). A rotating ring (310) is rotatably connected to the outer surface of the locking rod (309). A sieve plate (315) is fixedly connected to the outer wall of the rotating ring (310). An arc groove (311) is opened on the inner wall of the box (101).
7. The engineering stone crushing and screening device according to claim 6, characterized in that, The arc-shaped groove (311) is provided in several parts. An arc-shaped rod (312) is fixedly connected to the inner wall of the arc-shaped groove (311). A second spring (313) is fixedly connected to the inner wall of the arc-shaped groove (311). An arc-shaped ring (314) is fixedly connected to the end of the second spring (313) away from the arc-shaped groove (311). The outer wall of the arc-shaped ring (314) is fixedly connected to the outer wall of the sieve plate (315). The inner wall of the arc-shaped ring (314) is slidably connected to the outer surface of the arc-shaped rod (312). The arc-shaped rod (312) is located inside the second spring (313).
8. The engineering stone crushing and screening device according to claim 7, characterized in that, The inner wall of the box (101) is fixedly connected to a discharge plate (316), and there are two discharge plates (316). The bottom of the box (101) is provided with a discharge port one (317), the outer wall of the box (101) is fixedly connected to a discharge port two (318), and the outer wall of the box (101) is fixedly connected to a discharge port three (319).