A crusher and recycled concrete system

Abstract

The application discloses a crusher and recycled concrete system, including a machine body, a support installed at the bottom end of the machine body, a support assembly rotatably connected to the support, and a support leg arranged in the support assembly, the support assembly includes a first part, a second part and a third part, the first part is rotatably connected to the support, the second part and the third part are symmetrical about the first part, and the second part and the third part are connected to the first part. Due to the design of the force transmission rod in the mounting block, the gear connection between the first spring and the support column and the fixed column, etc., the crusher performs well when facing uneven ground. Even if one side of the support leg first contacts the ground, the distance between the support column and the support changes, through the action of gear transmission and elastic sheet, the effective transmission of force and the normal operation of the support assembly can still be ensured, various uneven work sites are effectively adapted, and the influence of ground conditions on equipment use is reduced.

Description

Technical Field

[0001] This application relates to the technical field of concrete recycling, and in particular to a crusher and a system for recycling concrete. Background Technology

[0002] In the rapid development of the construction industry, construction waste, if not effectively treated, will occupy a large amount of land resources. Moreover, landfilling of construction waste will pollute the soil and groundwater, affecting the ecological environment. By processing waste concrete and other construction waste into recycled aggregates for the production of recycled concrete, the environmental pressure of construction waste can be effectively reduced, and resource recycling can be achieved.

[0003] In the production of recycled concrete, the construction waste must first be crushed so that the recycled aggregate is between 0-20mm. Jaw crushers or cone crushers are generally used. However, due to the very violent vibrations that occur during the operation of the crusher, the ground may collapse, which will disrupt the entire steady-state system of the equipment. For example, the main shaft may shift, thus reducing the service life of the entire equipment. Summary of the Invention

[0004] The purpose of this application is to provide a crusher and a recycled concrete system to improve the stability of the crusher during operation.

[0005] The crusher provided in this application adopts the following technical solution: it includes a machine body;

[0006] The bracket is installed at the bottom of the machine body;

[0007] A support assembly is rotatably connected to the bracket. The support assembly includes a first part, a second part, and a third part. The first part is rotatably connected to the bracket. The second and third parts are symmetrical about the first part and are connected to the first part. The ends of the second and third parts can abut against the bracket.

[0008] The support leg is slidably connected to the second and third parts, and the support leg can move as the support assembly rotates;

[0009] When the second and third ends abut against the bracket, the outrigger retracts into the second and third parts; when the support assembly rotates, the outrigger moves outward along with the support assembly until it supports the ground.

[0010] Optionally, the first part is connected to the second part and the third part respectively. The bracket is fixedly connected to a fixed column, which passes through both ends of the first part. The fixed column is provided with a first spiral groove. The fixed column is fitted with a first block, which slides in the first spiral groove. The first block is provided with a first rod, and the two ends of the first rod are fixedly connected to mounting blocks. The mounting blocks are provided with force transmission blocks, which are rotatably connected to the support legs.

[0011] Optionally, a first column is fixedly connected inside the mounting block, and the force transmission block is slidably connected to the first column.

[0012] Optionally, the mounting block is provided with a force transmission rod, and the force transmission rod is fitted with a first spring. The first spring forces the force transmission rod to press against the ground. The force transmission rod is divided into a first section and a second section. The first section is connected to the mounting block via a sliding key, and the second section is provided with a threaded part. The threaded part is threadedly connected to a support column, and the fixed column and the support column are connected by gears.

[0013] Optionally, the support column has two annular protrusions, and an annular gear is provided between the two annular protrusions. The two annular protrusions are respectively abutted on both sides of the annular gear. Several elastic plates are provided between the annular gear and the support column. The fixed column is fixedly connected to a first gear, which meshes with the annular gear.

[0014] Optionally, the fixing column is provided with a second helical groove, the pitch of the second helical groove being greater than that of the first helical groove. The fixing column is sleeved on a second block, the second block being slidably connected to the second helical groove. A first sliding sleeve is sleeved on the first part, and the first sliding sleeve is fixedly connected to the second block. The second part and the third part are both sleeved with a second sliding sleeve and a third sliding sleeve. The third sliding sleeve is connected to the first sliding sleeve via a connecting rod. The connecting rod is rotatably connected to both the first and third sliding sleeves. The second sliding sleeve is fixedly connected to the support leg. The ends of the second sliding sleeve and the third sliding sleeve are connected by a tension spring.

[0015] Optionally, a fixing block is fixedly connected to the first part, and a limiting rod is provided through the fixing block. The bracket is provided with a limiting hole, and a second spring is sleeved on the limiting rod. The second spring forces the limiting rod to move downward. When the support assembly rotates 90°, the limiting rod falls into the limiting hole under the action of the second spring.

[0016] A recycled concrete system includes a crusher, a screening device, a cleaning and activation device, and a mixing device. Waste concrete blocks are first crushed by the crusher, and then screened by the screening device to separate recycled coarse aggregate and recycled fine aggregate. The recycled coarse aggregate and recycled fine aggregate are respectively fed into the cleaning and activation device for cleaning and activation. After activation, the recycled coarse aggregate and recycled fine aggregate are fed into the mixing device for mixing. During the mixing process, water, cement, sand, and stone raw materials are added to achieve the recycling of concrete.

[0017] Optionally, the recycled coarse aggregate and the recycled fine aggregate are washed, spun dry, and dried in the washing and activation device.

[0018] Optionally, the regenerated micro powder is mechanically ground in the cleaning and activation device to activate its activity. The grinding time is 3-4 hours. The ground regenerated micro powder is then calcined to further activate its activity. The calcination temperature is controlled at 650-800℃.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. The connection design between the force transmission block and the outriggers, the first rod, the mounting block, and the first column effectively distributes and transmits the load on the outriggers in both horizontal and vertical directions. For example, when one outrigger is under greater stress, the horizontal force can be transferred to the other outrigger through the force transmission block and the first rod, preventing the fixed rod from bending due to excessive stress on one side. This greatly improves the stability and reliability of the entire support structure, ensuring that the crusher can still operate stably under complex working conditions.

[0021] 2. Due to the design of the internal force transmission rod, the first spring, and the gear connection between the support column and the fixed column, the crusher performs excellently when facing uneven ground. Even if one outrigger contacts the ground first, changing the distance between the support column and the bracket, the effective transmission of force and the normal operation of the support components can still be ensured through gear transmission and the action of the elastic plate. This effectively adapts to various uneven working sites and reduces the impact of ground conditions on equipment use.

[0022] 3. The cooperation between the limiting rod in the first part, the limiting hole of the bracket, and the second spring reliably locks the outrigger position after the support assembly rotates 90°, preventing accidental rotation of the support assembly during operation and ensuring operational safety. Simultaneously, the connection between the second sliding sleeve and the tension spring at the end of the outrigger provides locking force when the outrigger extends and touches the ground, further enhancing the stability of the outrigger and providing a certain degree of cushioning protection, thus extending the service life of the outrigger and related components. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0024] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this application;

[0025] Figure 3 This is a schematic diagram of the overall structure of the support in Embodiment 2 of this application;

[0026] Figure 4 This is a schematic diagram of the overall structure of the support component in Embodiment 2 of this application;

[0027] Figure 5 This is a cross-sectional structural diagram of the support component in Embodiment 2 of this application;

[0028] Figure 6 This is a cross-sectional front view of the support component in Embodiment 2 of this application;

[0029] Figure 7 This is a schematic diagram of the ring gear in Embodiment 2 of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Crusher; 11. Machine body; 12. Support frame; 13. Support assembly; 131. First part; 132. Second part; 133. Third part; 134. Support leg; 1341. Second sliding sleeve; 1342. Third sliding sleeve; 1343. Second block; 1344. First sliding sleeve; 1345. Connecting rod; 1346. Tension spring; 135. Fixed shaft; 1351. Second spiral groove; 1352. First spiral groove 136. Limiting rod; 1361. Second spring; 1362. Fixing block; 137. Force transmission rod; 138. First block; 1381. First rod; 1382. Mounting block; 1383. Force transmission block; 1384. First column; 1385. First spring; 1386. First gear; 1387. Ring gear; 1388. Elastic sheet; 1389. Support column; 2. Screening device; 3. Cleaning and activation device; 4. Stirring device. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail.

[0032] This application discloses a crusher and a recycled concrete system.

[0033] Example 1, referring to Figure 1 A recycled concrete system includes a crusher 1, a screening device 2, a washing and activation device 3, and a mixing device 4. First, waste concrete blocks are transported to the crusher 1 for crushing. The crushed waste concrete blocks are then transported to the screening device 2 via a conveyor belt. The screening device 2 uses a screen and vibration to separate the crushed waste concrete blocks into recycled coarse aggregate, recycled fine aggregate, and recycled micro powder. The coarse screen has a 5mm aperture, and the fine screen has a 0.16mm aperture. The recycled coarse aggregate and recycled fine aggregate are then transported separately to different washing and activation devices 3 via conveyor belts. The washing and activation device 3 includes a recycled coarse aggregate washing tank, a recycled fine aggregate washing tank, and a recycled micro powder activation box.

[0034] The recycled coarse aggregate is stirred and washed in the recycled coarse aggregate washing tank. After washing, it is spun dry by centrifugal force provided by the motor. The water is spun out from the inner chamber of the centrifugal spun dryer and then discharged through the water outlet. The recycled coarse aggregate after being spun dry is dried by the drying blower and enters the mixing device through the discharge port.

[0035] The recycled fine aggregate is stirred and washed in the recycled fine aggregate washing tank. After washing, it is spun dry by centrifugal force provided by the motor. The water is spun out from the inner chamber of the centrifugal spun dryer and then discharged through the water outlet. The recycled fine aggregate after being spun dry is dried by the drying blower and enters the mixing device through the discharge port.

[0036] The regenerated micro powder is first mechanically ground by gravity balls in the regenerated micro powder activation box to activate its activity. The grinding time is controlled at 3 to 4 hours. After grinding, it is calcined to further activate its activity. The calcination temperature is 650 to 800℃.

[0037] After being activated by the washing and activation device 3, the recycled coarse aggregate, recycled fine aggregate, and recycled micro powder enter the mixing device 4. The recycled concrete is then uniformly mixed through stirring. During the mixing process, water, cement, sand, and other materials are added. This achieves efficient recycling and reuse of waste concrete, transforming it into usable recycled concrete. This reduces reliance on natural sand and gravel resources, helps alleviate resource shortages, and promotes the sustainable development of the construction industry.

[0038] The strength of recycled concrete satisfies the following formula:

[0039] ;

[0040] In the formula, x represents the amount of recycled fine aggregate; y represents the amount of recycled coarse aggregate; z represents the amount of recycled micro powder; fce represents the actual strength of the added cement, MPa; C represents the total amount of cement and recycled micro powder per cubic meter of recycled concrete, kg; W represents the amount of water per cubic meter of recycled concrete, kg; A and B represent empirical coefficients, crushed stone: A=0.46, B=0.07, gravel: A=0.48, B=0.33, when recycled coarse aggregate and / or recycled fine aggregate are added, A=0.46, B=0.07 are selected.

[0041] Example 2, Reference Figure 2 and Figure 3A crusher 1 includes a body 11, a bracket 12 mounted on the bottom of the body 11, a support assembly 13 rotatably connected to the bracket 12, and support legs 134 disposed within the support assembly 13. The support assembly 13 includes a first part 131, a second part 132, and a third part 133. The first part 131 is rotatably connected to the bracket 12. The second part 132 and the third part 133 are symmetrical about the first part 131, and the second part 132 and the third part 133 are connected to the first part 131. The end of the 33 can abut against the bracket 12. The second part 132 and the third part 133 are inclined. In embodiment 2, the first part 131 is a cylindrical tube, and the second part 132 and the third part 133 are square tubes. In the initial state, the ends of the second part 132 and the third part 133 are in abutment with the bracket 12. At this time, the support leg 134 is completely retracted into the second part 132 and the third part 133. When the support assembly 13 is rotated 90°, the support leg 134 moves outward along the second part 132 and the third part 133 until it abuts against the ground.

[0042] refer to Figure 4 and Figure 5 The bracket 12 is fixedly connected to a fixed column, which passes through both ends of the first part 131. The fixed column has a first spiral groove 1352. A first block 138 is sleeved on the fixed column. The support leg 134 is rotatably connected to the first block 138. The first block 138 slides in the first spiral groove 1352, so that the first block 138 can rotate with the support assembly 13. Under the restriction of the first spiral groove 1352, the first block 138 can move up and down, thereby pushing the support leg 134 to move in the second part 132 / third part 133. A first rod 1381 passes through the first block 138, and mounting blocks are fixedly connected to both ends of the first rod 1381. 1382, the mounting block 1382 is equipped with a force transmission block 1383, which is rotatably connected to the support leg 134. This allows the horizontal load on one support leg 134 to be transferred to the other side. For example, when the support leg 134 in the second part 132 is subjected to a relatively large load, the force will be transmitted to the force transmission block 1383 along the direction of the support leg 134. The load force on the force transmission block 1383 can be seen to have two components in the vertical and horizontal directions. The horizontal component will be transmitted to the support leg 134 on the other side along the first rod 1381. In this way, the fixed rod will not be subjected to horizontal load and thus will not bend.

[0043] refer to Figure 5 and Figure 6The mounting block 1382 is fixedly connected to the first column 1384. The force transmission block 1383 is slidably connected to the first column 1384. The mounting block 1382 is provided with a force transmission rod 137, and the force transmission rod 137 is fitted with a first spring 1385. The first spring 1385 forces the force transmission rod 137 to press firmly. In this way, the two support legs 134 do not interfere with each other during the rotation of the support assembly 13. For example, when one support leg 134 comes into contact with the outside, the mounting block 1382 can continue to move downward. At this time, the force transmission block 1383 can slide on the first column 1384, so that the support leg 134 on this side and the mounting block 1382 still have room to continue moving, thereby avoiding affecting the movement of the support leg 134 on the other side. The first spring 1385 is equivalent to the preload force set between the support leg 134 and the mounting block 1382. When the preload force between the support leg 134 and the mounting block 1382 exceeds the elastic force of the spring, it indicates that the support leg 134 on this side has come into contact with the outside.

[0044] refer to Figure 6 and Figure 7 The force transmission rod 137 is divided into a first section and a second section. The first section is connected to the mounting block 1382 via a sliding key. The second section has a threaded part, and the threaded part is threadedly connected to the support column 1389. Under the action of the first section, the force transmission rod 137 can move vertically. The support column 1389 can transmit the vertical component force received by the force transmission block 1383 to the bracket 12. The fixed column and the support column 1389 are connected by gears. When the support assembly 13 rotates, the support column 1389 rotates through the gears. Thus, the support column 1389 can move on the force transmission rod 137 and abut against the bracket 12, transmitting the vertical force received by the support leg 134 to the bracket 12. The support column 1389 has two annular protrusions, and an annular gear 1387 is positioned between the two annular protrusions. The annular gear 1387 abuts against the two annular protrusions on both sides. Several elastic plates 1388 are positioned between the annular gear 1387 and the support column 1389. A first gear 1386 is fixedly connected to the fixed column, and the first gear 1386 meshes with the annular gear 1387. Due to uneven external terrain, one side of the support leg 134 may touch the ground first. This causes a change in the distance between the support column 1389 and the bracket 12 under the influence of force transmission. The spacing between the two support columns 1389 and the bracket 12 is different. When there is a gap between the support column 1389 and the bracket 12, the support column 1389 rotates and moves upward through the meshing of the first gear 1386 and the ring gear 1387. When the support column 1389 abuts against the bracket 12, there will be a large force between the first gear 1386 and the ring gear 1387. This force will cause the elastic plate 1388 to bend and the ring gear 1387 to become eccentric. In this way, the ring gear 1387 can bypass the first gear 1386 and achieve avoidance.

[0045] refer to Figure 6 The fixed column is provided with a second spiral groove 1351, the pitch of which is greater than that of the first spiral groove 1352. The fixed column is fitted with a second piece 1343, which is slidably connected to the second spiral groove 1351. The first part 131 is fitted with a first sliding sleeve 1344, which is fixedly connected to the second piece 1343. The second part 132 and the third part 133 are both fitted with a second sliding sleeve 1341 and a third sliding sleeve 1342. The third sliding sleeve 1342 is connected to the first sliding sleeve 1344 via a connecting rod 1345. The connecting rod 1345 is rotatably connected to both the first sliding sleeve 1344 and the third sliding sleeve 1342. The second sliding sleeve 1341 is fixedly connected to the support leg 134. The ends of the second sliding sleeve 1341 and the third sliding sleeve 1342 are connected via a tension spring 1346. When the support assembly 13 rotates by the same angle, the third sliding sleeve 1342 moves a greater distance than the second sliding sleeve 1341, which causes the tension spring 1346 to be stretched, thus causing the outrigger 134 to be subjected to a locking force when it touches the ground.

[0046] refer to Figure 6 The first part 131 is fixedly connected to a fixing block 1362, and a limiting rod 136 is provided through the fixing block 1362. The bracket 12 is provided with a limiting hole. The limiting rod 136 is fitted with a second spring 1361. The second spring 1361 forces the limiting rod 136 to move downward. When the support assembly 13 rotates 90°, the limiting rod 136 falls into the limiting hole under the action of the second spring 1361. When the limiting rod 136 is pulled upward, the rotation restriction of the support assembly 13 is released.

[0047] Working principle: When the crusher 1 is working, in the initial state, the ends of the second part 132 and the third part 133 abut against the support 12, and the support leg 134 is retracted within them. When it is necessary to change the state, the support assembly 13 starts to rotate. Because the fixed column passes through the first part 131 and is provided with the first spiral groove 1352, the first block 138, which is fitted onto the fixed column, slides and moves up and down in the first spiral groove 1352 under the rotation of the support assembly 13, pushing the support leg 134, which is rotatably connected to it, to move outward within the inclined second part 132 and the third part 133. The force transmission block 1383 inside the mounting block 1382 is rotatably connected to the support leg 134 and slidably connected to the first column 1384 fixedly connected inside the mounting block 1382. The force transmission rod 137 passes through the mounting block 1382 and is fitted with the first spring 1385. Its first section is connected to the mounting block 1382 via a sliding key, and its second section is threadedly connected to the support column 1389. The fixed column and the support column 1389 are connected by gears. When one support leg 134 is subjected to a large load, the force is decomposed and transmitted through the force transmission block 1383. When the support assembly 13 rotates, the gears cause the support column 1389 to rotate and move to abut against the bracket 12 to transmit vertical force. When the support leg 134 touches the ground first due to unevenness in the external environment, causing the spacing of the support column 1389 to change, the first gear 1386 and the ring gear 1387 mesh to make the support column 1389 rotate and move upward. When abutting, the elastic plate 1388 bends, causing the ring gear 1387 to eccentrically avoid. The second spiral groove 1351 of the fixed column slides into the second block 1343. The first sliding sleeve 1344 of the first part 131 moves with the second block 1343. The second sliding sleeves 1341 of the second part 132 and the third part 133 are connected to the tension spring 1346 at the end of the support leg 134. When the support assembly 13 rotates, the tension spring 1346 is stretched, so that the support leg 134 has a locking force when it touches the ground. When the support assembly 13 rotates 90°, the limiting rod 136 on the fixing block 1362 inside the first part 131 falls into the limiting hole of the bracket 12 and locks under the action of the second spring 1361. Pulling the limiting rod 136 upward releases the rotation restriction.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A crusher, characterized in that: Includes a body (11); a bracket (12) installed at the bottom of the body (11); a support assembly (13) rotatably connected to the bracket (12), the support assembly (13) including a first part (131), a second part (132) and a third part (133), the first part (131) being rotatably connected to the bracket (12), the second part (132) and the third part (133) being symmetrical about the first part (131), and the second part (132) and the third part (133) being connected to the first part (131), the ends of the second part (132) and the third part (133) being able to abut against the bracket (12); and a leg (134) slidably connected within the second part (132) and the third part (133), the leg (134) being able to move as the support assembly (13) rotates; When the end of the second part (132) and the end of the third part (133) abut against the bracket (12), the support leg (134) retracts into the second part (132) and the third part (133); when the support assembly (13) rotates, the support leg (134) moves outward following the rotation of the support assembly (13) until the support leg (134) supports the ground; The first part (131) is connected to the second part (132) and the third part (133) respectively. The bracket (12) is fixedly connected to a fixed column, which passes through both ends of the first part (131). The fixed column is provided with a first spiral groove (1352). The fixed column is fitted with a first block (138). The first block (138) slides in the first spiral groove (1352). The first block (138) is provided with a first rod (1381) which passes through it. The first rod (1381) is fixedly connected to both ends of an mounting block (1382). The mounting block (1382) is provided with a force transmission block (1383). The force transmission block (1383) is rotatably connected to the support leg (134). The mounting block (1382) is fixedly connected to the first column (1384), and the force transmission block (1383) is slidably connected to the first column (1384); The mounting block (1382) is provided with a force transmission rod (137) through it. The force transmission rod (137) is fitted with a first spring (1385). The first spring (1385) forces the force transmission rod (137) to abut against each other. The force transmission rod (137) is divided into a first section and a second section. The first section is connected to the mounting block (1382) by a sliding key. The second section is provided with a threaded part. The threaded part is threadedly connected to a support column (1389). The fixed column and the support column (1389) are connected by gears. The support column (1389) is provided with two annular protrusions, and an annular gear (1387) is provided between the two annular protrusions. The two annular protrusions are respectively abutted on both sides of the annular gear (1387). A number of elastic plates (1388) are provided between the annular gear (1387) and the support column (1389). The fixing column is fixedly connected to the first gear (1386), and the first gear (1386) meshes with the annular gear (1387). The fixing post is provided with a second spiral groove (1351), the pitch of which is greater than that of the first spiral groove (1352). The fixing post is sleeved on a second block (1343), which slides with the second spiral groove (1351). The first part (131) is sleeved with a first sliding sleeve (1344), which is fixedly connected to the second block (1343). The second part (132) and the third part (133) are both sleeved with... The second sliding sleeve (1341) and the third sliding sleeve (1342) are connected to the first sliding sleeve (1344) via a connecting rod (1345). The connecting rod (1345) is rotatably connected to both the first sliding sleeve (1344) and the third sliding sleeve (1342). The second sliding sleeve (1341) is fixedly connected to the support leg (134). The ends of the second sliding sleeve (1341) and the third sliding sleeve (1342) are connected via a tension spring (1346).

2. The crusher according to claim 1, characterized in that: A fixing block (1362) is fixedly connected inside the first part (131). A limiting rod (136) is provided through the fixing block. The bracket (12) is provided with a limiting hole. A second spring (1361) is sleeved on the limiting rod (136). The second spring (1361) forces the limiting rod (136) to move downward. When the support assembly (13) rotates 90°, the limiting rod (136) falls into the limiting hole under the action of the second spring (1361).

3. A recycled concrete system, characterized in that: The system includes a crusher (1), a screening device (2), a cleaning and activation device (3), and a mixing device (4) as described in any one of claims 1-2. Waste concrete blocks are first crushed by the crusher (1), and then screened by the screening device (2) to separate recycled coarse aggregate, recycled fine aggregate, and recycled micro powder. The recycled coarse aggregate, recycled fine aggregate, and recycled micro powder are respectively sent to the cleaning and activation device (3) for cleaning and activation. After activation, the recycled coarse aggregate, recycled fine aggregate, and recycled micro powder are sent to the mixing device (4) for mixing. During the mixing process, water, cement, sand, and stone raw materials are added to achieve the recycling of concrete.

4. The recycled concrete system according to claim 3, characterized in that: The recycled coarse aggregate and the recycled fine aggregate are washed, spun dry and dried in the washing and activation device (3).

5. The recycled concrete system according to claim 4, characterized in that: The regenerated micro powder is mechanically ground in the cleaning and activation device (3) to activate its activity. The grinding time is 3 to 4 hours. The ground regenerated micro powder is then calcined to further activate its activity. The calcination temperature is controlled at 650 to 800°C.

Images