CN214131803U - Stone sieving mechanism is used in highway construction - Google Patents

Stone sieving mechanism is used in highway construction Download PDF

Info

Publication number
CN214131803U
CN214131803U CN202022939838.0U CN202022939838U CN214131803U CN 214131803 U CN214131803 U CN 214131803U CN 202022939838 U CN202022939838 U CN 202022939838U CN 214131803 U CN214131803 U CN 214131803U
Authority
CN
China
Prior art keywords
rod
screening
wall
box
box body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN202022939838.0U
Other languages
Chinese (zh)
Inventor
孙福庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202022939838.0U priority Critical patent/CN214131803U/en
Application granted granted Critical
Publication of CN214131803U publication Critical patent/CN214131803U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

The utility model provides a stone sieving mechanism is used in highway construction. Highway construction is with stone sieving mechanism is including screening case, the extrusion subassembly, screen out the subassembly, rotary mechanism and actuating mechanism, it is connected with the bull stick to rotate on the interior roof of first box body, connecting rod threaded connection is located the pole wall of screening incasement portion at the bull stick, the both ends of connecting rod are rotated and are connected with the clamp plate that the slope set up, fixed mounting has the telescopic link between the outer wall of connecting rod and the interior roof of screening case, slide bar sliding connection is at the top of second box, elastic screen fixed mounting is between two sets of mounting strips, stay cord fixed mounting is between the top of slide bar and elastic screen's bottom, rotary mechanism installs the inside at first box body, actuating mechanism installs the inside at the second box body. The utility model has the advantages of can carry out the breakage to the bold earth in the stone, be convenient for screen out great clod, improve the quality of follow-up stone preparation concrete.

Description

Stone sieving mechanism is used in highway construction
Technical Field
The utility model relates to a highway construction technical field especially relates to a stone sieving mechanism is used in highway construction.
Background
The building construction refers to production activities in the engineering construction implementation stage, is the construction process of various buildings, and also can be a process of changing various lines on a design drawing into a real object at a specified place. The method comprises foundation engineering construction, main structure construction, roofing engineering construction, decoration engineering construction and the like. The construction site is called as a construction site or construction site, and is also called as a construction site, when constructing a highway, stones with uniform sizes are generally needed, and then the stones need to be screened and then the road is laid, so that a screening device is needed.
At present, a plurality of screening devices screen out dust in stones directly through screens, but soil blocks with larger particles are doped in a plurality of stones, and the size of the large soil blocks is basically the same as that of the stones, so that the soil blocks are not easy to screen out by small-hole screens, and the quality of subsequently prepared concrete is influenced.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a stone sieving mechanism for highway construction.
The utility model adopts the following technical scheme:
the utility model provides a stone sieving mechanism for highway construction includes, screening case, extrusion subassembly, screening subassembly, rotary mechanism and actuating mechanism, the screening case has seted up the feed inlet on being close to the both ends lateral wall at top, the screening case rotates on being close to the lateral wall of bottom and is connected with sealing door, the top fixed mounting of screening case has first box body, it is connected with the bull stick to rotate on the interior roof of first box body, the bull stick passes first box body and extends to the inside of screening case, just the bull stick is located the pole wall of screening incasement portion and has seted up the external screw thread, the extrusion subassembly includes connecting rod, clamp plate and telescopic link, connecting rod threaded connection is on the pole wall that the bull stick is located screening incasement portion, the both ends of connecting rod rotate and are connected with the clamp plate that the slope set up, fixed mounting has the telescopic link between the outer wall of connecting rod and the interior roof of screening case, the screening subassembly includes the slide bar, Stay cord and elastic screen, fixed mounting has the second box body on the interior diapire of screening case, slide bar sliding connection is at the top of second box body, install the mounting bar on the both ends inner wall of screening case respectively, and a set of mounting bar fixed mounting is on the one end inner wall of screening case, another group the mounting bar passes through locking Assembly to be installed on the other end inner wall of screening case, elastic screen fixed mounting is two sets of between the mounting bar, stay cord fixed mounting is between the top of slide bar and elastic screen's bottom, rotary mechanism installs the inside at first box body, actuating mechanism installs the inside at the second box body.
Preferably, rotary mechanism includes first motor, half-gear, full gear and first torsional spring, first motor fixed mounting is on the interior diapire of first box body, half-gear and the output fixed connection of first motor, the full gear is fixed to be cup jointed on the bull stick is located the inside pole wall of first box body, first torsional spring concatenates on the bull stick is located the inside pole wall of first box body.
Preferably, actuating mechanism includes second motor, cam, ball and second spring, second motor fixed mounting is on the inside wall of second box body, the output fixed connection of cam and second motor, the ball is located the inside one end fixed connection of second box body with the slide bar, the second spring concatenates on the slide bar is located the inside pole wall of second box body.
Preferably, the connecting rod comprises a screw cylinder and screws, the screw cylinder is in threaded connection with the rod wall of the rotating rod inside the screening box, the screws are in threaded connection with the two ends of the screw cylinder, and the two sets of screws are respectively in the two sets of pressing plates in a rotating connection mode.
Preferably, the locking assembly comprises a sliding plate and a fixing bolt, a sliding groove is formed in the side wall of the screening box, the sliding plate is connected to the inside of the sliding groove in a sliding mode, the position, located inside the sliding groove, of the sliding plate is fixedly connected with the mounting strip on one side of the inside of the screening box, and the fixing bolt is connected to the side wall of the sliding plate in a threaded mode.
Preferably, two groups of guide plates which are obliquely arranged are arranged on the inner side walls of the two ends of the screening box.
The utility model has the advantages that: the stones to be screened are put in the space between the inner walls of the pressing plate and the screening box from the feeding hole, then the rotating rod is driven to rotate through the working of the rotating mechanism, the rotating rod can drive the connecting rod to move up and down, and then the pressing plate can be driven to extrude and grind the stones up and down, so that the larger soil blocks doped in the stones can be crushed. The crushed soil blocks and stones can fall on the elastic screen, and the sliding rod is driven by the driving mechanism to move up and down, so that the elastic screen can bounce up and down, and the crushed mud blocks are screened out by passing through the elastic screen. Then, remove a set of mounting bar again and make the elastic screen cloth adjust to the tilt state, open the sealing door again and can make the stone of being sieved mud piece get rid of, prevent that mud piece too big and can't be sieved and remove, improve the follow-up quality of preparing the concrete of stone.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of the stone screening apparatus for road construction according to the present invention;
FIG. 2 is a schematic view of the internal structure of a screening box of the stone screening device for highway construction provided by the present invention;
FIG. 3 is an interior elevational view of the screen box of FIG. 1;
FIG. 4 is a schematic view of the internal structure of the first container shown in FIG. 1;
fig. 5 is a schematic view of the internal structure of the second container shown in fig. 3.
Reference numbers in the figures: 1. a screening box; 101. a feed inlet; 102. a sealing door; 103. a chute; 2. a material guide plate; 3. a first case; 4. a rotating rod; 5. an extrusion assembly; 51. a connecting rod; 511. a screw cylinder; 512. a screw; 52. Pressing a plate; 53. a telescopic rod; 6. a rotation mechanism; 61. a first motor; 62. a half gear; 63. all-gear; 64. a first torsion spring; 7. a second box body; 8. a screening assembly; 81. a slide bar; 82. pulling a rope; 83. an elastic screen; 9. a drive mechanism; 91. a second motor; 92. a cam; 93. a ball bearing; 94. a second spring; 9a, mounting bars; 9b, a locking assembly; 9b1, a sled; 9b2, fixing bolts.
Detailed Description
The embodiment provides a stone sieving mechanism for highway construction.
Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of the stone screening apparatus for road construction according to the present invention; FIG. 2 is a schematic view of the internal structure of a screening box of the stone screening device for highway construction provided by the present invention; FIG. 3 is an interior elevational view of the screen box of FIG. 1; FIG. 4 is a schematic view of the internal structure of the first container shown in FIG. 1; fig. 5 is a schematic view of the internal structure of the second container shown in fig. 3. The method comprises the following steps: screening case 1, extrusion component 5, screening subassembly 8, rotary mechanism 6 and actuating mechanism 9, have seted up feed inlet 101 on the both ends lateral wall that screening case 1 is close to the top, and screening case 1 rotates on being close to the lateral wall of bottom and is connected with sealing door 102.
In the specific implementation process, as shown in fig. 2, fig. 3 and fig. 4, the top of the screening box 1 is fixedly provided with a first box body 3, the inner top wall of the first box body 3 is rotatably connected with a rotating rod 4, the rotating rod 4 passes through the first box body 3 and extends towards the inside of the screening box 1, and the rotating rod 4 is positioned on the rod wall inside the screening box 1 and is provided with an external thread. The extrusion assembly 5 comprises a connecting rod 51, a pressing plate 52 and an expansion rod 53, wherein the connecting rod 51 is in threaded connection with the rod wall of the rotating rod 4 inside the screening box 1, the pressing plate 52 obliquely arranged is rotatably connected to two ends of the connecting rod 51, and the expansion rod 53 is fixedly installed between the outer wall of the connecting rod 51 and the inner top wall of the screening box 1.
The rotating mechanism 6 comprises a first motor 61, a half gear 62, a full gear 63 and a first torsion spring 64, the first motor 61 is fixedly installed on the inner bottom wall of the first box body 3, the half gear 62 is fixedly connected with the output end of the first motor 61, the full gear 63 is fixedly sleeved on the rod wall of the rotating rod 4 inside the first box body 3, and the first torsion spring 64 is connected in series on the rod wall of the rotating rod 4 inside the first box body 3.
The connecting rod 51 comprises a screw cylinder 511 and screws 512, the screw cylinder 511 is connected with the rod wall of the rotating rod 4 inside the screening box 1 in a threaded manner, the screws 512 are connected with both ends of the screw cylinder 511 in a threaded manner, and the two sets of screws 512 are respectively connected with the two sets of pressing plates 52 in a rotating manner.
It should be noted that: according to the quantity of the stones to be rolled, the screw 512 is rotated to move out of the screw barrel 511, then the distance between the pressing plate 52 and the inner wall of the screening box 1 is adjusted to a proper position, and the stones to be screened are thrown between the pressing plate 52 and the inner wall of the screening box 1 from the feeding hole 101. Then, the first motor 61 is started to work to drive the half gear 62 fixedly connected with the output end of the first motor to rotate. When the half gear 62 rotates to the toothed side to contact with the full gear 63, the full gear 63 and the rotary rod 4 are driven to rotate, and the first torsion spring 64 is forced to rotate. When the half gear 62 rotates to the side without teeth to contact with the full gear 63, the first torsion spring 64 is relieved and drives the rotary rod 4 and the full gear 63 to rotate reversely and reset, so that the rotary rod 4 can rotate back and forth. Because connecting rod 51 not only with 4 threaded connection of bull stick, still with the interior roof of screening case 1 between fixed mounting have a telescopic link 53, so bull stick 4 round trip to rotate can drive connecting rod 51 and reciprocate, and then can drive clamp plate 52 and reciprocate and rub the stone and roll to can prevent the too big stone crushing in the stone, prevent that the mud piece is too big and can't be sieved.
Referring to fig. 1, 3 and 5, the screening assembly 8 includes a sliding rod 81, a pulling rope 82 and an elastic screen 83, the second box 7 is fixedly installed on the inner bottom wall of the screening box 1, and the sliding rod 81 is slidably connected to the top of the second box 7. Install mounting bar 9a on the both ends inner wall of screening case 1 respectively, and a set of mounting bar 9a fixed mounting is on the one end inner wall of screening case 1, and another group of mounting bar 9a passes through locking Assembly 9b to be installed on the other end inner wall of screening case 1. The elastic screen 83 is fixedly installed between the two sets of mounting bars 9a, and the pull rope 82 is fixedly installed between the top of the sliding rod 81 and the bottom of the elastic screen 83.
The driving mechanism 9 includes a second motor 91, a cam 92, a ball 93 and a second spring 94, the second motor 91 is fixedly installed on the inner side wall of the second box 7, the cam 92 is fixedly connected with the output end of the second motor 91, the ball 93 is fixedly connected with one end of the sliding rod 81 located inside the second box 7, and the second spring 94 is connected in series to the rod wall of the sliding rod 81 located inside the second box 7.
Locking subassembly 9b includes slide 9b1 and fixing bolt 9b2, has seted up spout 103 on the lateral wall of screening case 1, and slide 9b1 sliding connection is in the inside of spout 103, and slide 9b1 is located the inside position of spout 103 and is connected with the mounting bar 9a fixed connection of screening case 1 inside one side, and threaded connection has fixing bolt 9b2 on the lateral wall of slide 9b 1.
Two groups of guide plates 2 which are obliquely arranged are arranged on the inner side walls of the two ends of the screening box 1.
It should be noted that: the stones and crushed mud pieces fall down onto the guide plate 2 and then roll off the guide plate 2 onto the elastic screen 83. At this time, the second motor 91 is started again to drive the cam 92 fixedly connected with the output end thereof to rotate. When the cam 92 rotates to make the small end contact with the ball 93, the pressing rod 81 slides to the outside of the second box 7, and the second spring 94 is compressed. When the cam 92 rotates to a large end to contact with the ball 93, the second spring 94 is relieved of force to drive the sliding rod 81 to move downwards and reset, so that the sliding rod 81 continuously slides up and down and drives the elastic screen 83 to bounce up and down through the pull rope 82, stones falling on the elastic screen 83 are bounced, and crushed mud blocks can pass through the elastic screen 83 to be sieved. Then, the mounting bars 9a connected with the sliding plate 9b1 are slid to move up and down, the elastic screen 83 is pulled to be inclined, the fixing bolts 9b2 are rotated to abut against the outer wall of the screening box 1, the sliding plate 9b1 and the mounting bars 9a are fixed, and at the moment, the sealing door 102 is opened, so that the stones removed from the mud can roll out of the inclined elastic screen 83.
The utility model provides a stone sieving mechanism is used in highway construction's theory of operation as follows: according to the amount of crushed stones, the screw 512 is rotated to move out of the screw barrel 511, and then the distance between the pressing plate 52 and the inner wall of the screening box 1 is adjusted to a proper position. The stones to be screened are put between the pressure plate 52 and the inner wall of the screening box 1 from the feeding hole 101, and then the first motor 61 is started to work to drive the half gear 62 fixedly connected with the output end of the first motor to rotate. When the half gear 62 rotates to the side with teeth to contact with the full gear 63, the full gear 63 and the rotating rod 4 are driven to rotate, and the first torsion spring 64 is forced to twist, and when the half gear 62 rotates to the side without teeth to contact with the full gear 63, the first torsion spring 64 is relieved from the force and drives the rotating rod 4 and the full gear 63 to rotate reversely and reset, so that the rotating rod 4 can rotate back and forth. Because the connecting rod 51 is not only in threaded connection with the rotating rod 4, but also is fixedly provided with the telescopic rod 53 between the connecting rod 51 and the inner top wall of the screening box 1, the rotating rod 4 rotates back and forth to drive the connecting rod 51 to move up and down, and further can drive the pressing plate 52 to move up and down to rub and roll the stones, thereby crushing large stones in the stones and preventing the mud blocks from being too large to be screened out; the stones and crushed mud pieces fall down onto the guide plate 2 and then roll off the guide plate 2 onto the elastic screen 83. At this time, the second motor 91 is started again to operate to drive the cam 92 fixedly connected with the output end thereof to rotate, and when the cam 92 rotates to a small end to contact with the ball 93, the sliding rod 81 is extruded to slide towards the outside of the second box body 7, and the second spring 94 is stressed and compressed. When the cam 92 rotates to a large end to contact with the ball 93, the second spring 94 is relieved of force to drive the sliding rod 81 to move downwards and reset, so that the sliding rod 81 continuously slides up and down and drives the elastic screen 83 to bounce up and down through the pull rope 82, stones falling on the elastic screen 83 are bounced, and crushed mud blocks can pass through the elastic screen 83 to be screened out of the stones. Then, a group of mounting bars 9a connected with the sliding plate 9b1 is slid to move up and down, the elastic screen 83 is pulled to be in an inclined state, the fixing bolt 9b2 is rotated to abut against the outer wall of the screening box 1, the sliding plate 9b1 and the mounting bars 9a are fixed, and the sealing door 102 is opened again, so that stones with mud blocks screened out can roll out of the inclined elastic screen 83, large soil blocks in the stones can be crushed, screening of large soil blocks is facilitated, and the quality of concrete prepared by the following stones is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (6)

1. The utility model provides a stone sieving mechanism is used in highway construction which characterized in that includes:
the screening box (1), the side walls of two ends, close to the top, of the screening box (1) are provided with feed inlets (101), and the side wall, close to the bottom, of the screening box (1) is rotatably connected with a sealing door (102);
the device comprises an extrusion assembly (5), a first box body (3) is fixedly mounted at the top of the screening box (1), a rotating rod (4) is rotatably connected to the inner top wall of the first box body (3), the rotating rod (4) penetrates through the first box body (3) and extends towards the inside of the screening box (1), an external thread is formed on the rod wall of the rotating rod (4) located inside the screening box (1), the extrusion assembly (5) comprises a connecting rod (51), a pressing plate (52) and a telescopic rod (53), the connecting rod (51) is in threaded connection with the rod wall of the rotating rod (4) located inside the screening box (1), the pressing plate (52) which is obliquely arranged is rotatably connected to two ends of the connecting rod (51), and the telescopic rod (53) is fixedly mounted between the outer wall of the connecting rod (51) and the inner top wall of the screening box (1);
the screening component (8) comprises a sliding rod (81), a pull rope (82) and an elastic screen (83), a second box body (7) is fixedly installed on the inner bottom wall of the screening box (1), the sliding rod (81) is connected to the top of the second box body (7) in a sliding mode, mounting strips (9a) are installed on the inner walls of the two ends of the screening box (1) respectively, one group of the mounting strips (9a) are fixedly installed on the inner wall of one end of the screening box (1), the other group of the mounting strips (9a) are installed on the inner wall of the other end of the screening box (1) through a locking component (9b), the elastic screen (83) is fixedly installed between the two groups of the mounting strips (9a), and the pull rope (82) is fixedly installed between the top of the sliding rod (81) and the bottom of the elastic screen (83);
the rotating mechanism (6), the said rotating mechanism (6) is installed inside the first box body (3);
and the driving mechanism (9), wherein the driving mechanism (9) is installed inside the second box body (7).
2. The stone screening device for highway construction according to claim 1, wherein said rotating mechanism (6) comprises a first motor (61), a half gear (62), a full gear (63) and a first torsion spring (64), said first motor (61) is fixedly installed on the inner bottom wall of the first box (3), said half gear (62) is fixedly connected with the output end of the first motor (61), said full gear (63) is fixedly sleeved on the rod wall of the rotating rod (4) inside the first box (3), said first torsion spring (64) is serially connected on the rod wall of the rotating rod (4) inside the first box (3).
3. The stone screening device for highway construction according to claim 1, wherein the driving mechanism (9) comprises a second motor (91), a cam (92), a ball (93) and a second spring (94), the second motor (91) is fixedly installed on the inner side wall of the second box body (7), the cam (92) is fixedly connected with the output end of the second motor (91), the ball (93) is fixedly connected with one end of the sliding rod (81) located inside the second box body (7), and the second spring (94) is connected in series with the rod wall of the sliding rod (81) located inside the second box body (7).
4. The stone screening apparatus for road construction according to claim 1, 2 or 3, wherein the connecting rod (51) comprises a screw cylinder (511) and a screw rod (512), the screw cylinder (511) is connected to the rod wall of the rotating rod (4) inside the screening box (1) in a threaded manner, the screw rod (512) is connected to both ends of the screw cylinder (511) in a threaded manner, and the two sets of screw rods (512) are respectively connected to the two sets of pressing plates (52) in a rotating manner.
5. The stone screening apparatus for road construction according to claim 1, 2 or 3, wherein the locking assembly (9b) comprises a sliding plate (9b1) and a fixing bolt (9b2), a sliding groove (103) is formed in a side wall of the screening box (1), the sliding plate (9b1) is slidably connected to the inside of the sliding groove (103), a part of the sliding plate (9b1) located inside the sliding groove (103) is fixedly connected with a mounting bar (9a) on one side inside the screening box (1), and the fixing bolt (9b2) is screwed on the side wall of the sliding plate (9b 1).
6. The stone screening apparatus for road construction according to claim 1, 2 or 3, wherein two sets of the guide plates (2) are installed on the inner side walls of both ends of the screening box (1).
CN202022939838.0U 2020-12-10 2020-12-10 Stone sieving mechanism is used in highway construction Expired - Fee Related CN214131803U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022939838.0U CN214131803U (en) 2020-12-10 2020-12-10 Stone sieving mechanism is used in highway construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022939838.0U CN214131803U (en) 2020-12-10 2020-12-10 Stone sieving mechanism is used in highway construction

Publications (1)

Publication Number Publication Date
CN214131803U true CN214131803U (en) 2021-09-07

Family

ID=77587085

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022939838.0U Expired - Fee Related CN214131803U (en) 2020-12-10 2020-12-10 Stone sieving mechanism is used in highway construction

Country Status (1)

Country Link
CN (1) CN214131803U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114054128A (en) * 2021-10-29 2022-02-18 付文凯 Rice milling device capable of screening broken rice
CN115055232A (en) * 2022-07-22 2022-09-16 广州市龙粤环保机械设备有限公司 Double-roller crusher for ore crushing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114054128A (en) * 2021-10-29 2022-02-18 付文凯 Rice milling device capable of screening broken rice
CN114054128B (en) * 2021-10-29 2022-11-04 双峰县衡通机械有限公司 Rice milling device capable of screening broken rice
CN115055232A (en) * 2022-07-22 2022-09-16 广州市龙粤环保机械设备有限公司 Double-roller crusher for ore crushing
CN115055232B (en) * 2022-07-22 2023-03-10 广州市龙粤环保机械设备有限公司 Double-roller crusher for ore crushing

Similar Documents

Publication Publication Date Title
CN214131803U (en) Stone sieving mechanism is used in highway construction
CN211726467U (en) Roller screening device for drying sand
CN208959965U (en) A kind of crusher for construction garbage brick
CN111346816A (en) Screening sand device for construction
CN208527219U (en) A kind of civil engineering sandstone screening plant
CN111229377B (en) Grit screening plant for construction
CN210752875U (en) Quick sieving mechanism of building reclaimed materials
CN108636784B (en) Sand screening device for building construction
CN112024398A (en) Building grit screening equipment
CN116099754A (en) Screening machine with screen granularity adjustable mechanism for luminescent ceramic recovery
CN215465880U (en) Aggregate edulcoration device is used in plaster processing
CN216172679U (en) Recycled concrete crushing and screening device
CN2577952Y (en) Multifunctional crushing and shrinkage dividing combined sampler
CN213102359U (en) Stone reducing mechanism for building engineering
CN111804581A (en) A hierarchical grit sieving mechanism for mining
CN113731788A (en) But sand stone sieve separator is used in processing of building construction concrete of grading screening
CN217774739U (en) A raw materials screening plant for cement concrete production
CN112871398A (en) Crushing and sorting equipment for waste building structures
CN111514968A (en) Soil material preparation device and method for geotechnical laboratory
CN220346509U (en) Vibrating screen for producing medium element water-soluble fertilizer
CN221288679U (en) Graded screening vibration feeding device of sand making machine
CN221086292U (en) Square hole sieve for concrete preparation
CN212633363U (en) Screening plant for building
CN220277085U (en) Mineral aggregate reducing mechanism
CN217699286U (en) Screening and crushing integrated machine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210907