Equipment for in-situ crushing of cement concrete slabs

Abstract

The present invention relates to the technical field of concrete crushing, and discloses a device for on-site crushing of cement concrete slabs, including a main frame. A first crushing mechanism is provided in the middle of the main frame, and second crushing mechanisms are provided on both sides of the first crushing mechanism. The first crushing mechanism includes a first crushing hammer and a first hydraulic cylinder for pushing the first crushing hammer to lift and lower. The second crushing mechanism includes a second crushing hammer and a second hydraulic cylinder for pushing the second crushing hammer to lift and lower. In this technical solution, by providing a second crushing hammer with a first transmission rod, when the second crushing hammer falls from a high place driven by the second hydraulic cylinder, the second crushing hammer will be linked with the support frame through the first transmission rod, thereby promoting the downward movement of the support frame. Driven by the support frame, the steel drill will be inserted into the crushed stones to loosen them, making the subsequent crushed stone cleaning work more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete crushing, and more specifically to equipment for on-site crushing of cement concrete slabs. Background Art

[0002] As a type of pavement structure in road engineering, cement concrete pavements are extremely widely used due to characteristics such as abundant material sources, relatively simple construction processes and equipment, and relatively low maintenance costs in the initial stage of construction. However, when they reach the end of their service life, the pavements will suffer serious damages and thus lose their overall load-bearing capacity. In such a situation, due to the relatively large stiffness of cement concrete pavements, it is rather troublesome to handle them.

[0003] The conventional treatment method is to crush and demolish the concrete pavement and then lay a new concrete pavement. The multi-hammer pavement crusher is a relatively common concrete pavement crushing device. According to different structures, it can be divided into two types: the whole vehicle type and the split type. The split multi-hammer pavement crusher is generally fixed on the walking equipment by means of hitch and walks under the drag of the walking equipment. Its working principle is as follows: the crushing hammer is driven by the oil cylinder to rise; when the oil cylinder unloads, the crushing hammer falls by its own weight to impact the pavement, and this cycle repeats.

[0004] In the prior art, when the multi-hammer pavement crusher is working, it will hammer the pavement downward. Under the impact of the hammer head, the pavement is broken into blocks. Since the characteristic of the multi-hammer pavement crusher is to have multiple crushing hammers and can repeatedly hammer the pavement, with high crushing efficiency, in actual use, the pavement at the same position will be repeatedly impacted by different hammer heads. Under the impact of the hammer heads, the broken blocks will be interlocked with each other, which will make it very inconvenient to clean the pavement broken blocks subsequently. Summary of the Invention

[0005] The present invention provides equipment for on-site crushing of cement concrete slabs, which has the beneficial effect that the crushed pavement is easier to clean, and solves the problem mentioned in the above background art that under the impact of the hammer heads, the broken blocks will be interlocked with each other, which will make it very inconvenient to clean the pavement broken blocks subsequently.

[0006] The present invention provides the following technical solution: Equipment for on-site crushing of cement concrete slabs, including a main frame. A first crushing mechanism is provided in the middle of the main frame, and second crushing mechanisms are provided on both sides of the first crushing mechanism. The first crushing mechanism includes a first crushing hammer and a first hydraulic cylinder for pushing the first crushing hammer to lift and lower. The second crushing mechanism includes a second crushing hammer and a second hydraulic cylinder for pushing the second crushing hammer to lift and lower;

[0007] One side of the main frame is provided with a sub-frame, and the sub-frame is detachably connected to the main frame. A block loosening mechanism is provided on the sub-frame, and the block loosening mechanism includes a support frame. The support frame is movably connected to the sub-frame through a support component. An inner side of the support frame is provided with a fixing plate. The fixing plate is elastically connected to the support frame through a torsion spring, and a plurality of steel drills are provided on the fixing plate.

[0008] As an alternative solution of the equipment for on-site crushing of cement concrete slabs according to the present invention, wherein: both sides of the sub-frame are provided with first transmission rods. One end of the first transmission rod is fixedly connected to the second crushing hammer, and the other end of the first transmission rod abuts against the support frame. A baffle is provided on the outer side of the sub-frame.

[0009] As an alternative solution of the equipment for on-site crushing of cement concrete slabs according to the present invention, wherein: a wheel frame is provided on one side of the main frame close to the sub-frame. One end of the wheel frame is provided with a connecting seat, and one end of the connecting seat is provided with a wheel axle. Both ends of the wheel axle are provided with rollers.

[0010] As an alternative solution of the equipment for on-site crushing of cement concrete slabs according to the present invention, wherein: a connecting beam is provided on the lower side of the wheel frame, and transmission components are symmetrically provided on the connecting beam. The transmission components include a transmission shaft and a sliding sleeve. The sliding sleeve is fixedly connected to the connecting beam. The transmission shaft is slidably connected to the sliding sleeve, and the transmission shaft is elastically connected to the connecting beam through a first spring.

[0011] As an alternative solution of the equipment for on-site crushing of cement concrete slabs according to the present invention, wherein: a limiting seat is provided on the lower side of the connecting beam. The limiting seat is of a hollow structure, and a limiting plate is provided on the inner side of the limiting seat. The limiting plate is elastically connected to the limiting seat through a second spring, and a conical clamping protrusion is provided on the lower side of the limiting plate;

[0012] Limiting rods are provided on both sides of the limiting seat. The limiting rods are elastically connected to the limiting seat through third springs. One end of the limiting rod abuts against the conical clamping protrusion, and a limiting block is provided at the other end of the limiting rod. The limiting block is elastically connected to the limiting rod through a fourth spring, and an inclined side is provided on one side of the limiting block. A toothed portion is provided on one side of the transmission shaft, and the position of the toothed portion is opposite to that of the limiting rod.

[0013] As an alternative solution of the equipment for on-site crushing of cement concrete slabs according to the present invention, wherein: the connecting seat is of a hollow structure, and a lifting plate is provided on the inner side of the connecting seat. The lifting plate is elastically connected to the connecting seat through a fourth spring, and one end of the lifting plate extends out of the outer side of the connecting seat. An extension plate is provided on the lower side of the limiting plate, and one end of the extension plate abuts against the lifting plate.

[0014] As an alternative solution for the equipment of on-site crushing of cement concrete slabs according to the present invention, wherein: the wheel axle is rotatably connected to the connecting seat through a bearing, and a cam is provided on the wheel axle.

[0015] As an alternative solution for the equipment of on-site crushing of cement concrete slabs according to the present invention, wherein: an extension column is provided on one side of the first crushing hammer, an extension block is provided at one end of the transmission shaft close to the first crushing hammer, and an inclined surface is provided on one side of the extension block.

[0016] As an alternative solution for the equipment of on-site crushing of cement concrete slabs according to the present invention, wherein: the support assembly includes a support rod, one end of the support rod is fixedly connected to the sub-frame, and the other end of the support rod is slidably connected to the support frame. A tension spring is sleeved outside the support rod.

[0017] As an alternative solution for the equipment of on-site crushing of cement concrete slabs according to the present invention, wherein: connecting shafts are provided at both ends of the fixing plate, and the connecting shafts are rotatably connected to the support frame.

[0018] The present invention has the following beneficial effects:

[0019] 1. For the equipment of on-site crushing of cement concrete slabs, by arranging a sub-frame on one side of the main frame, a crushed block loosening mechanism is provided on the sub-frame. The crushed block loosening mechanism includes a support frame, a fixing plate is provided on the support frame, and a number of steel drills are provided on the fixing plate. The support frame and the sub-frame can move relative to each other. A support rod is provided on the sub-frame, and the support rod is slidably connected to the support frame. At the same time, the support frame is elastically connected to the sub-frame through a tension spring. First transmission rods are provided on both sides of the sub-frame. One end of the first transmission rod is fixedly connected to the second crushing hammer, and the other end abuts against the support frame. When the second crushing hammer is lifted by the second hydraulic cylinder and then falls, driven by the second crushing hammer, one end of the first transmission rod will press down the support frame. Under the abutment of the first transmission rod, the support frame will drive the steel drills to move downward together. At this time, the bottom end of the steel drill will be inserted into the crushed stones.

[0020] In this technical solution, by arranging a second crushing hammer with a first transmission rod, when the second crushing hammer falls from a high place driven by the second hydraulic cylinder, the second crushing hammer will be linked with the support frame through the first transmission rod, thereby promoting the support frame to move downward. Driven by the support frame, the steel drills will be inserted into the crushed stones to loosen them, making the subsequent crushed stone cleaning work more convenient.

[0021] 2. The equipment for on-site crushing of the cement concrete slab is provided with a connecting beam on the wheel frame, and a transmission component is arranged on the connecting beam. The transmission component includes a transmission shaft and a sliding sleeve. The transmission shaft is movable. Correspondingly, an extension column is arranged on one side of the first crushing hammer. When the first crushing hammer moves upward, it will drive the extension column to move together. An extension block is arranged at one end of the transmission shaft. When the extension column moves upward, it will contact the transmission shaft. Under the push of the extension column, the transmission shaft moves towards the fixed plate. The fixed plate is rotatably connected to the support frame through a connecting shaft. Under the push of the transmission shaft, the fixed plate will overcome the resistance of the torsion spring and deflect. When the steel drill rod is inserted into the broken block, if the fixed plate and the steel drill rod deflect, then the steel drill rod will pry up the broken block, further improving the loosening effect.

[0022] In this technical solution, a transmission component is arranged on the wheel frame. Correspondingly, an extension column that cooperates with the transmission component is arranged on the first crushing hammer. When the first crushing hammer moves upward under the push of the first hydraulic cylinder, the extension column will contact the extension block at the end of the transmission shaft. Since a slope is arranged on one side of the extension block, under the push of the extension column, the transmission shaft will contact the fixed plate. Under the push of the transmission shaft, the fixed plate will drive the steel drill rod to deflect. During this process, the steel drill rod originally inserted in the broken road surface will pry up some broken blocks, effectively improving the loosening effect.

[0023] 3. The equipment for on-site crushing of the cement concrete slab is provided with a limit seat on the lower side of the connecting beam, and a limit plate and a limit rod are arranged on the limit seat. The limit rod is movably connected to the limit seat, and a limit block is arranged at the end of the limit rod. The limit block is elastically connected to the limit rod. When the transmission shaft moves towards the fixed plate, since a slope is arranged on one side of the limit block, when the tooth on the transmission shaft contacts the limit block, under the push of the tooth, the limit block will overcome the resistance of the fourth spring and move towards the limit rod. At this time, the limit block will not block the tooth and the transmission shaft.

[0024] When the transmission shaft returns to its original position under the pull of the first spring, the tooth on the transmission shaft will contact the limit block. Under the restriction of the limit block, the transmission shaft stops moving. At this time, if the first crushing hammer freely falls downward, during its movement, the extension column will not contact the extension block, so that it will not impact the extension block and the transmission shaft, effectively improving the service life of the transmission shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention.

[0026] Figure 2 is a schematic structural diagram of the sub-frame of the present invention.

[0027] Figure 3 is a side view of the present invention.

[0028] Figure 4 Schematic structural diagram of the transmission component of the present invention.

[0029] Figure 5 Schematic internal structure diagram of the limit seat of the present invention.

[0030] Figure 6 Schematic internal structure diagram of the connecting seat of the present invention.

[0031] In the figure: 1, main frame; 2, first breaker; 3, first hydraulic cylinder; 4, second breaker; 5, second hydraulic cylinder; 6, sub-frame; 7, support frame; 8, fixing plate; 9, steel drill rod; 10, first transmission rod; 11, baffle; 12, wheel frame; 13, connecting seat; 14, wheel axle; 15, roller; 16, connecting beam; 17, transmission shaft; 18, sliding sleeve; 19, first spring; 20, limit seat; 21, limit plate; 22, second spring; 23, conical convex; 24, limit rod; 25, third spring; 26, tooth; 27, lifting plate; 28, fifth spring; 29, extension plate; 30, cam; 31, extension column; 32, extension block; 33, support rod; 34, tension spring; 35, connecting shaft; 36, torsion spring; 37, limit block; 38, fourth spring. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] Please refer to Figures 1 to 6 , the present invention provides a device for on-site crushing of cement concrete slabs, including a main frame 1. A first crushing mechanism is provided in the middle of the main frame 1, and second crushing mechanisms are provided on both sides of the first crushing mechanism. The first crushing mechanism includes a first breaker 2 and a first hydraulic cylinder 3 for pushing the first breaker 2 up and down. The second crushing mechanism includes a second breaker 4 and a second hydraulic cylinder 5 for pushing the second breaker 4 up and down;

[0035] A sub-frame 6 is provided on one side of the main frame 1, and the sub-frame 6 is detachably connected to the main frame 1. A broken block loosening mechanism is provided on the sub-frame 6. The broken block loosening mechanism includes a support frame 7. The support frame 7 is movably connected to the sub-frame 6 through a support assembly. A fixing plate 8 is provided inside the support frame 7. The fixing plate 8 is elastically connected to the support frame 7 through a torsion spring 36, and a plurality of steel drill rods 9 are provided on the fixing plate 8.

[0036] A first crushing mechanism and a second crushing mechanism are provided on the main frame 1. The first hydraulic cylinder 3 can push the first crushing hammer 2 upward. Subsequently, the hydraulic column of the first hydraulic cylinder 3 quickly returns to its original position, and the first crushing hammer 2 falls under the influence of its own gravity, forming an impact on the road surface. The second hydraulic cylinder 5 can push the second crushing hammer 4 upward. Subsequently, the hydraulic column of the second hydraulic cylinder 5 quickly returns to its original position, and the second crushing hammer 4 falls under the influence of its own gravity, forming an impact on the road surface. This cycle repeats. Under the influence of the first crushing hammer 2 and the second crushing hammer 4, after the road surface is crushed, the broken blocks will be wedged together and difficult to clean up. To solve the above problems, a sub-frame 6 is provided on one side of the main frame 1, and a broken block loosening mechanism is provided on the sub-frame 6. The broken block loosening mechanism can loosen the crushed road surface to make it easier to clean up.

[0037] It should be noted that: both the first hydraulic cylinder 3 and the second hydraulic cylinder 5 are fixedly connected to the main frame 1. Hammer head connection components are provided at the ends of the first hydraulic cylinder 3 and the second hydraulic cylinder 5. The hammer head connection component includes a connection head, and the connection head is rotatably connected to the hydraulic column. Flexible straps are provided on both sides of the connection head. One end of the strap is fixedly connected to the crushing hammer, and the other end is movably connected to the connection head.

[0038] Embodiment 2

[0039] This embodiment is an explanatory note based on Embodiment 1. Specifically, please refer to Figures 1 to 6 , first transmission rods 10 are provided on both sides of the sub-frame 6. One end of the first transmission rod 10 is fixedly connected to the second crushing hammer 4, and the other end of the first transmission rod 10 abuts against the support frame 7. A baffle 11 is provided on the outside of the sub-frame 6.

[0040] The support assembly includes a support rod 33. One end of the support rod 33 is fixedly connected to the sub-frame 6, and the other end of the support rod 33 is slidably connected to the support frame 7. A tension spring 34 is sleeved on the outside of the support rod 33.

[0041] Both ends of the fixing plate 8 are provided with connecting shafts 35, and the connecting shafts 35 are rotatably connected to the support frame 7.

[0042] The fragment loosening mechanism includes a support frame 7, on which a fixed plate 8 is provided, and on which a plurality of steel chisels 9 are provided. The support frame 7 and the auxiliary frame 6 can be relatively movable, and a support rod 33 is provided on the auxiliary frame 6, and the support rod 33 is slidably connected to the support frame 7. At the same time, the support frame 7 is elastically connected to the auxiliary frame 6 through a tension spring 34. A first transmission rod 10 is provided on both sides of the auxiliary frame 6, and one end of the first transmission rod 10 is fixedly connected to the second breaker 4, and the other end is in contact with the support frame 7. When the second breaker 4 is lifted up by the second hydraulic cylinder 5 and then falls, driven by the second breaker 4, one end of the first transmission rod 10 will press the support frame 7 downward, and under the contact of the first transmission rod 10, the support frame 7 will move downward with the fixed plate 8 and the steel chisel 9. At this time, the bottom end of the steel chisel 9 will be inserted into the gravel, thereby playing a role in loosening the gravel.

[0043] This technical solution is provided with a second breaker 4 with a first transmission rod 10. When the second breaker 4 falls from a high place driven by the second hydraulic cylinder 5, the second breaker 4 will be linked with the support frame 7 through the first transmission rod 10, thereby prompting the support frame 7 to move downward. Driven by the support frame 7, the steel chisel 9 will be inserted into the gravel to loosen it, making the subsequent gravel cleaning work more convenient.

[0044] The function of the baffle 11 is to prevent the fragments from splashing when the steel chisel 9 lifts up the fragments.

[0045] Example 3

[0046] This embodiment is an explanation based on the embodiment 1. For details, please refer to Figures 1 to 6 A wheel frame 12 is provided on one side of the main frame 1 close to the auxiliary frame 6 , a connecting seat 13 is provided at one end of the wheel frame 12 , and a wheel axle 14 is provided at one end of the connecting seat 13 , and rollers 15 are provided at both ends of the wheel axle 14 .

[0047] A connecting beam 16 is provided at the lower side of the wheel frame 12, and a transmission assembly is symmetrically provided on the connecting beam 16, the transmission assembly includes a transmission shaft 17 and a sliding sleeve 18, the sliding sleeve 18 is fixedly connected to the connecting beam 16, the transmission shaft 17 is slidably connected to the sliding sleeve 18, and the transmission shaft 17 is elastically connected to the connecting beam 16 through a first spring 19. An extension column 31 is provided at one side of the first breaker 2, and an extension block 32 is provided at one end of the transmission shaft 17 close to the first breaker 2, and a slope is provided on one side of the extension block 32.

[0048] A wheel frame 12 is provided on the main frame 1, a connecting beam 16 is provided on the wheel frame 12, a transmission assembly is provided on the connecting beam 16, and the transmission assembly includes a transmission shaft 17 and a sliding sleeve 18. The transmission shaft 17 is movable. Correspondingly, an extension column 31 is provided on one side of the first breaker 2. When the first breaker 2 moves upward, the extension column 31 will be driven to move together. An extension block 32 is provided at one end of the transmission shaft 17. When the extension column 31 moves upward, it will conflict with the transmission shaft 17. Under the push of the extension column 31, the transmission shaft 17 moves toward the fixed plate 8. The fixed plate 8 is rotatably connected to the support frame 7 through the connecting shaft 35. Under the push of the transmission shaft 17, the fixed plate 8 will overcome the resistance of the torsion spring 36 and deflect. When the steel drill 9 is inserted into the fragments, if the fixed plate 8 and the steel drill 9 are deflected, the steel drill 9 will lift the fragments, further improving the loosening effect.

[0049] In the present technical solution, a transmission assembly is arranged on the wheel frame 12, and correspondingly, an extension column 31 used in conjunction with the transmission assembly is arranged on the first breaker 2. When the first breaker 2 moves upward under the push of the first hydraulic cylinder 3, the extension column 31 will conflict with the extension block 32 at the end of the transmission shaft 17. Since a slope is provided on one side of the extension block 32, the transmission shaft 17 will conflict with the fixed plate 8 under the push of the extension column 31. Under the push of the transmission shaft 17, the fixed plate 8 will deflect with the steel bar 9. In this process, the steel bar 9 originally inserted in the broken road surface will lift up some of the broken pieces, thereby effectively improving the loosening effect.

[0050] Example 4

[0051] This embodiment is an explanation based on the embodiment 1. For details, please refer to Figures 1 to 6 A limit seat 20 is provided at the lower side of the connecting beam 16. The limit seat 20 is a hollow structure, and a limit plate 21 is provided on the inner side of the limit seat 20. The limit plate 21 is elastically connected to the limit seat 20 through a second spring 22, and a conical clamping protrusion 23 is provided on the lower side of the limit plate 21;

[0052] Limit rods 24 are provided on both sides of the limit seat 20, and the limit rods 24 are elastically connected to the limit seat 20 through a third spring 25. One end of the limit rod 24 abuts against the conical cam 23, and a limit block 37 is provided at the other end of the limit rod 24. The limit block 37 is elastically connected to the limit rod 24 through a fourth spring 38, and a bevel is provided on one side of the limit block 37. A latch tooth 26 is provided on one side of the transmission shaft 17, and the position of the latch tooth 26 is opposite to the limit rod 24.

[0053] The connecting seat 13 is of a hollow structure, and a lifting plate 27 is provided inside the connecting seat 13. The lifting plate 27 is elastically connected to the connecting seat 13 through a fifth spring 28, and one end of the lifting plate 27 extends to the outside of the connecting seat 13. An extension plate 29 is provided on the lower side of the limiting plate 21, and one end of the extension plate 29 abuts against the lifting plate 27. The wheel axle 14 is rotatably connected to the connecting seat 13 through a bearing, and a cam 30 is provided on the wheel axle 14.

[0054] When the first hydraulic cylinder 3 pushes the first breaker 2 upward, the moving speed of the first breaker 2 is slow, and the impact on the extension block 32 and the transmission shaft 17 is small. When the first breaker 2 falls by its own weight, the speed is fast, and the impact on the extension block 32 and the transmission shaft 17 is large, which is likely to cause damage to the transmission shaft 17. Therefore, in this technical solution, a limiting seat 20 is provided on the lower side of the connecting beam 16. A limiting plate 21 and a limiting rod 24 are provided on the limiting seat 20. The limiting rod 24 is elastically connected to the limiting seat 20. A limiting block 37 is provided at the end of the limiting rod 24. The limiting block 37 is elastically connected to the limiting rod 24. When the transmission shaft 17 moves towards the fixed plate 8, since one side of the limiting block 37 is provided with an inclined surface, when the engaging teeth 26 on the transmission shaft 17 abut against the limiting block 37, under the push of the engaging teeth 26, the limiting block 37 will overcome the resistance of the fourth spring 38 and move towards the limiting rod 24. At this time, the limiting block 37 will not block the engaging teeth 26 and the transmission shaft 17;

[0055] When the transmission shaft 17 returns to its original position under the pull of the first spring 19, the engaging teeth 26 on the transmission shaft 17 will abut against the limiting block 37. Under the limitation of the limiting block 37, the transmission shaft 17 stops moving. At this time, if the first breaker 2 freely falls downward, during its movement, the extension column 31 will not abut against the extension block 32, so that the extension block 32 and the transmission shaft 17 will not be impacted, effectively improving the service life of the transmission shaft 17.

[0056] A lifting plate 27 that cooperates with the limiting seat 20 is provided at the connecting seat 13. The lifting plate 27 is elastically connected to the connecting seat 13 through a fifth spring 28. Correspondingly, a cam 30 is provided on the wheel axle 14. As the wheel axle 14 rotates, the cam 30 rotates. Under the push of the cam 30, the lifting plate 27 will move up and down reciprocally. One end of the lifting plate 27 abuts against the extension plate 29, and one end of the extension plate 29 is fixedly connected to the limiting plate 21. Under the push of the lifting plate 27, the limiting plate 21 will also move upward;

[0057] A conical clamping projection 23 is provided on the lower side of the limit plate 21. The conical clamping projection 23 abuts against the limit rod 24. The limit rods 24 are symmetrically arranged on both sides of the conical clamping projection 23. The conical clamping projection 23 is fixedly connected to the limit plate 21. As the conical clamping projection 23 moves, the gap between the limit rods 24 becomes smaller. That is to say, the limit rods 24 will move inwardly towards the limit seat 20 under the pulling of the third spring 25. As the limit rods 24 move, the limit blocks 37 will also move. At this time, the cogs 26 are separated from the limit blocks 37, and the transmission shaft 17 returns to its original position. When the first breaker 2 moves upward again, the transmission shaft 17 can be urged to move through the extension column 31, and so on.

[0058] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0059] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. Equipment for in-situ crushing of cement concrete slabs, including a main frame, characterized in that: A first crushing mechanism is provided in the middle of the main frame, and second crushing mechanisms are provided on both sides of the first crushing mechanism. The first crushing mechanism includes a first crushing hammer and a first hydraulic cylinder for pushing the first crushing hammer up and down. The second crushing mechanism includes a second crushing hammer and a second hydraulic cylinder for pushing the second crushing hammer up and down; A sub-frame is provided on one side of the main frame, and the sub-frame is detachably connected to the main frame. A block loosening mechanism is provided on the sub-frame. The block loosening mechanism includes a support frame. The support frame is movably connected to the sub-frame through a support assembly. A fixing plate is provided inside the support frame. The fixing plate is elastically connected to the support frame through a torsion spring. A plurality of steel drills are provided on the fixing plate; First transmission rods are provided on both sides of the sub-frame. One end of the first transmission rod is fixedly connected to the second crushing hammer; A wheel frame is provided on one side of the main frame close to the sub-frame; A connecting beam is provided below the wheel frame. Transmission components are symmetrically provided on the connecting beam. The transmission component includes a transmission shaft and a sliding sleeve. The sliding sleeve is fixedly connected to the connecting beam. The transmission shaft is slidably connected to the sliding sleeve. The transmission shaft is elastically connected to the connecting beam through a first spring; An extension column is provided on one side of the first crushing hammer. An extension block is provided at one end of the transmission shaft close to the first crushing hammer. An inclined surface is provided on one side of the extension block; The support assembly includes a support rod.

2. The equipment for on-site crushing of cement concrete slabs according to claim 1, characterized in that: The other end of the first transmission rod abuts against the support frame. A baffle is provided on the outer side of the sub-frame.

3. The equipment for in-situ crushing of cement concrete slabs according to claim 2, characterized in that: A connecting seat is provided at one end of the wheel frame. A wheel shaft is provided at one end of the connecting seat. Rollers are provided at both ends of the wheel shaft.

4. The equipment for in-situ crushing of cement concrete slabs according to claim 3, characterized in that: A limiting seat is provided below the connecting beam. The limiting seat is of a hollow structure. A limiting plate is provided inside the limiting seat. The limiting plate is elastically connected to the limiting seat through a second spring. A conical convex is provided below the limiting plate; Limiting rods are provided on both sides of the limiting seat. The limiting rods are elastically connected to the limiting seat through third springs. One end of the limiting rod abuts against the conical convex. A limiting block is provided at the other end of the limiting rod. The limiting block is elastically connected to the limiting rod through a fourth spring. An inclined side is provided on one side of the limiting block. A tooth is provided on one side of the transmission shaft. The position of the tooth is opposite to that of the limiting rod.

5. The equipment for on-site crushing of cement concrete slabs according to claim 4, characterized in that: The connecting seat is of a hollow structure. A lifting plate is provided inside the connecting seat. The lifting plate is elastically connected to the connecting seat through a fifth spring. One end of the lifting plate extends out of the connecting seat. An extension plate is provided below the limiting plate. One end of the extension plate abuts against the lifting plate.

6. The equipment for in-situ crushing of cement concrete slabs according to claim 5, characterized in that: The wheel shaft is rotatably connected to the connecting seat through a bearing. A cam is provided on the wheel shaft.

7. The equipment for on-site crushing of cement concrete slabs according to claim 6, characterized in that: One end of the support rod is fixedly connected to the sub-frame. The other end of the support rod is slidably connected to the support frame. A tension spring is sleeved on the outer side of the support rod.

8. The equipment for in-situ crushing of cement concrete slabs according to claim 1, characterized in that: Connecting shafts are provided at both ends of the fixing plate. The connecting shafts are rotatably connected to the support frame.

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