Loading, transporting and feeding device for rubble concrete construction

By designing the combination of support table, inner stop pipe and spiral guide plate, the problem that existing devices can only place stones in a single direction is solved, achieving uniform distribution of stones in concrete, and improving construction efficiency and safety .

CN119321125AActive Publication Date: 2025-01-17SHANXI ROAD & BRIDGE MUNICIPAL ENG CO LTD
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Patent Information

Application Number
CN202411878775.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2025-01-17
Estimated Expiration
2044-12-19

AI Technical Summary

Technical Problem

The existing shipping and feeding equipment for slab concrete construction can only place stones in a single direction, which is not convenient for overall horizontal movement, resulting in the inability to evenly spread the stones into the concrete.

Method used

A device including a support table, an inner barrier tube, a spiral guide plate, a fixed tube, a sleeve and a stop assembly is designed. Through the cooperation of the spiral guide plate and an inner barrier tube, the stones are evenly placed around. , and through the design of the rotating shaft and cross beam, the device is allowed to move the entire horizontal direction, adjusting the movement speed to improve the uniformity of the distribution of stones.

Benefits of technology

The uniform distribution of stones in concrete is achieved, construction efficiency and safety are improved, and the uneven distribution of stones in concrete is avoided.

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Abstract

The invention discloses a loading, transporting and feeding device for rubble concrete construction, and belongs to the technical field of stone feeding devices.The loading, transporting and feeding device comprises a supporting table and an inner blocking pipe arranged on the outer side of the supporting table in a sleeving mode, a spiral material guiding plate is arranged on the outer side of the inner blocking pipe in a sleeving mode, and a fixing pipe is arranged at the center of the supporting table; a sleeve is fixedly installed on the bottom face of the inner blocking pipe, the sleeve extends into the fixed pipe and can move in the vertical direction relative to the fixed pipe, stone blocks can be put around the inner blocking pipe by arranging a spiral material guide plate, meanwhile, when the whole device moves in the horizontal direction, the stone blocks can be evenly scattered into concrete, and therefore the stone blocks can be evenly scattered into the concrete. And the rotating shaft can drive the whole device to move in the direction of the cross beam, and meanwhile, the whole moving speed of the device can be adjusted according to the whole weight of the stone falling on the guide plate, so that the stone is more reasonably distributed in the concrete.
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Description

Technical Field

[0001] The invention relates to the technical field of stone feeding devices, in particular to a loading and feeding device used for flaky concrete construction. Background Art

[0002] Flame concrete is a retaining or protective structure made by adding a certain amount of flaks when pouring concrete. It is generally used in foundation projects or large-volume structures, such as flame concrete strip foundations, flame concrete cushions, retaining walls, large ground anchors, reservoir dams, etc.

[0003] Chinese patent CN219671350U discloses a loading and feeding device for flaky concrete construction. By setting a firm frame, the stability of the device body can be effectively guaranteed, and it is not easy to tip over during loading and transportation, reducing the occurrence of safety accidents. On the other hand, the coordinated use of a single slot door and a steel pipe net bag can effectively improve the feeding efficiency of construction workers to the flaky stones in the other hopper, realize the economy of hopper production and the controllability of feeding, change the existing feeding method of workers, reduce the safety risks of workers' operations, save labor, and improve work efficiency and safety.

[0004] The above device releases stones through the storage trough at the bottom of the hopper, but in actual use, it can only be released in a single direction, and it is not convenient to move the entire device in the horizontal direction through the above device, which causes the stones to not be evenly distributed in the concrete. In summary, there is still room for improvement in the above device.

[0005] Therefore, it is necessary to provide a loading and feeding device for rubble concrete construction to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a loading and feeding device for rubble concrete construction, so as to solve the problem that the existing device proposed in the above background technology feeds stones through a storage trough at the bottom of the hopper, but in actual use, the stones can only be fed in a single direction, and it is not convenient to move the device as a whole in the horizontal direction through the above device, which leads to the problem that the stones cannot be evenly distributed in the concrete.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a loading and feeding device for flaked concrete construction, comprising a support platform and an inner baffle tube sleeved on the outer side of the support platform, the outer side of the inner baffle tube is sleeved with a spiral material guide plate, a fixed tube is provided at the center of the support platform, a sleeve is fixedly installed on the bottom surface of the inner baffle tube, the sleeve extends into the fixed tube and can move in the vertical direction relative to the fixed tube, a spiral limiting groove is opened on the outer peripheral surface of the sleeve, and a limiting block that slides with the limiting groove is fixedly provided on the inner wall of the fixed tube; A stop assembly is provided at the bottom end of the guide plate. During the rotation of the inner stop tube, the stop assembly can intermittently move in the vertical direction. When the stop assembly is offset from the stone on the guide plate, the stone can slide off the guide plate.

[0008] As a further solution of the present invention: a connection block is fixedly provided at the top end surface of the fixed pipe, a cross beam is provided below the connection block, and the connection block is installed on the cross beam.

[0009] As a further solution of the present invention: the stop assembly includes a baffle bar arranged at the bottom end of the material guide plate, the baffle bar passes through the material guide plate and slides with the baffle bar, a boss is arranged under the material guide plate, rod sleeves are fixedly installed on both sides of the top surface of the boss, a sliding rod is elastically installed on the top of the rod sleeve, the sliding rod is fixedly connected to the baffle bar, a second electromagnet is fixedly installed on the bottom end of the rod sleeve, the sliding rod is made of iron, a plurality of magnetic strips are fixedly embedded on the inner wall of the inner baffle tube, a magnetic block is elastically installed on the outer circumferential surface of the support platform, the side of the magnetic block opposite to the magnetic strip has the same magnetic pole, a switch is arranged at the end of the magnetic block away from the inner baffle tube, and the switch is electrically connected to the second electromagnet.

[0010] As a further solution of the present invention: a rotating shaft is arranged in the sleeve, the top end of the rotating shaft passes through the connecting block and rotates with it, a gear is fixedly sleeved on one end of the rotating shaft passing through the connecting block, and a rack meshing with the gear is fixedly installed on the top of the crossbeam.

[0011] As a further solution of the present invention: a strip-shaped positioning groove is provided on the outer peripheral surface of the rotating shaft, and a positioning strip slidably matched with the positioning groove is fixedly provided on the inner wall of the sleeve.

[0012] As a further solution of the present invention: bumps are fixedly provided on both sides of the top of the crossbeam, a guide rod is fixedly provided between the two bumps, and the guide rod passes through the connecting block and slidably cooperates with the connecting block.

[0013] As a further solution of the present invention: a sealing block is fixedly installed on the top end of the sleeve, the sealing block is sealed with the fixed tube, and a guide hole is opened on the outer side surface of the fixed tube near the top end.

[0014] As a further solution of the present invention: an outer retaining tube is sleeved on the outer side of the inner retaining tube, and the material guide plate is fixedly installed between the inner retaining tube and the outer retaining tube.

[0015] As a further solution of the present invention: a support spring is fixedly arranged between the slide rod and the second electromagnet.

[0016] As a further solution of the present invention: a mounting hole is provided on the outer peripheral surface of the support platform, a shell is provided on the outer side of the switch, and the shell is fixedly arranged in the mounting hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are: this device can put stones around the inner baffle tube by setting a spiral guide plate. At the same time, when the device as a whole moves in the horizontal direction, the stones can be evenly distributed in the concrete, and the setting of the rotating shaft can drive the device as a whole to move along the direction of the beam. At the same time, the speed of the overall movement of the device can be adjusted according to the overall weight of the stones falling on the guide plate, so that the distribution of the stones in the concrete is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the guide plate and the baffle structure of the present invention; Figure 3 It is a schematic diagram of the inner baffle tube and the sleeve structure of the present invention; Figure 4 It is a schematic diagram of the pull rope structure of the present invention; Figure 5 The present invention Figure 3 A schematic diagram of the enlarged structure at point A; Figure 6 The present invention Figure 4 A schematic diagram of the enlarged structure at B; Figure 7 It is a schematic diagram of the cooperation between the gear and the rack of the present invention; Figure 8 It is a cross-sectional view of the inner baffle tube, the outer baffle tube and the material guide plate of the present invention; Fig. 9 The present invention Figure 8 A schematic diagram of the enlarged structure at C; Fig.10 The present invention Figure 8 A schematic diagram of the structure at D of FIG. Fig.11 The present invention Figure 8 A schematic diagram of the structure at E of FIG. Fig.12It is a schematic diagram of the sliding rod and the rod sleeve structure of the present invention.

[0019] In the figure: 1, inner baffle tube; 2, outer baffle tube; 101, magnetic strip; 3, crossbeam; 4, connecting block; 5, traction rope; 6, pull plate; 7, guide plate; 701, baffle strip; 8, sleeve; 801, limit groove; 9, reel; 10, pull rope; 11, fixed tube; 1101, guide hole; 12, connecting tube; 13, first electromagnet; 14, connecting plate; 15, pressure rod; 16, winding shaft; 17, guide rod; 18, rack; 19, rotating shaft; 1901, positioning groove; 20, gear; 21, sealing block; 22, support platform; 23, magnetic block; 24, switch; 25, limit block; 26, positioning strip; 27, slide rod; 28, rod sleeve; 29, second electromagnet. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 8 As shown, a loading and feeding device for rubble concrete construction includes a support platform 22 and an inner baffle tube 1 sleeved on the outside of the support platform 22, and a spiral material guide plate 7 is sleeved on the outside of the inner baffle tube 1. In actual use, when the inner baffle tube 1 moves downward relative to the support platform 22, the stones accumulated above the support platform 22 can fall onto the material guide plate 7, and then slide downward along the spiral material guide plate 7.

[0021] The top end surface of the support platform 22 is a conical structure, which is conducive to the sliding of stones, and a fixed pipe 11 is fixedly installed at the center of the support platform 22. The bottom of the inner retaining pipe 1 is a closed structure, and a sleeve 8 is fixedly installed on the bottom surface of the inner retaining pipe 1. The sleeve 8 is coaxially arranged with the fixed pipe 11, so that the sleeve 8 extends into the fixed pipe 11 and can move in the vertical direction relative to the fixed pipe 11. Furthermore, a spiral limiting groove 801 is provided on the outer peripheral surface of the sleeve 8, and a limiting block 25 that slidably cooperates with the limiting groove 801 is fixedly provided on the inner wall of the fixed tube 11. Through this structure, when the inner blocking tube 1 drives the sleeve 8 to move downward, the inner blocking tube 1 and the guide plate 7 on the outer side can rotate, so that stones are evenly placed around the inner blocking tube 1. Furthermore, a stop assembly is provided at the bottom end of the guide plate 7, so that during the rotation of the inner stop tube 1, the stop assembly can intermittently move in the vertical direction. In actual use, when the stop assembly is offset from the stone on the guide plate 7, the stone can slide off the guide plate 7. This structure can further improve the uniformity of stone distribution.

[0022] like Figure 1-Figure 5 , Figure 8-Figure 11As shown, a connecting block 4 is fixedly provided at the top end surface of the fixed tube 11, and a crossbeam 3 is provided below the connecting block 4, so that the connecting block 4 is installed on the crossbeam 3. In actual use, the rope of the crane can be connected to the hooks at the four corners of the top of the crossbeam 3 to drive the overall movement of the device.

[0023] The above-mentioned stopper assembly includes a stopper bar 701 arranged at the bottom end of the guide plate 7, the stopper bar 701 passes through the guide plate 7 and slides with it, a boss is arranged below the guide plate 7, the boss is fixedly connected to the inner stopper tube 1, and a rod sleeve 28 is fixedly installed on both sides of the top surface of the boss, and a slide bar 27 is elastically installed on the top of the rod sleeve 28, and the slide bar 27 is fixedly connected to the stopper bar 701. Fig.12 As shown, a second electromagnet 29 is fixedly installed at the bottom end of the rod sleeve 28, and the slide bar 27 is made of iron. When the second electromagnet 29 is in the energized state, the blocking bar 701 can be attracted and move downward, thereby staggering with the stones on the guide plate 7; Furthermore, a plurality of magnetic strips 101 are fixedly embedded on the inner wall of the inner barrier tube 1, and the plurality of magnetic strips 101 are evenly distributed in a circular array, and a magnetic block 23 is elastically installed on the outer circumferential surface of the support platform 22, and the magnetic block 23 has the same magnetic pole on the side opposite to the magnetic strip 101, and a switch 24 is provided at the end of the magnetic block 23 away from the inner barrier tube 1, and the switch 24 is electrically connected to the above-mentioned second electromagnet 29.

[0024] In actual use, the device is moved as a whole to the top of the poured concrete by a crane and the inner retaining tube 1 is released, so that the inner retaining tube 1 can move downward relative to the support platform 22. As the inner retaining tube 1 gradually moves downward, the stones piled up on the support platform 22 can fall outward from the top of the inner retaining tube 1 and be placed on the top of the guide plate 7. Of course, an outer retaining tube 2 can be sleeved on the outside of the inner retaining tube 1, and the guide plate 7 is fixedly installed between the inner retaining tube 1 and the outer retaining tube 2. This structure can prevent stones from falling from the side of the guide plate 7. When the inner retaining tube 1 drives the sleeve 8 When moving downward, the limit block 25 will slide along the limit groove 801, and the cooperation between the limit block 25 and the limit groove 801 can drive the sleeve 8, the inner stop tube 1 and the guide plate 7 to rotate. During the rotation of the inner stop tube 1, the magnetic strip 101 embedded in the inner wall of the inner stop tube 1 will be aligned with the magnetic block 23 on the support platform 22 within a certain period of time. The repulsive force between the magnetic strip 101 and the magnetic block 23 can cause the magnetic block 23 to move inward relative to the support platform 22 and squeeze the switch 24, thereby causing the second electromagnet 29 to be in an energized state through the switch 24. The suction force of the second electromagnet 29 on the slide bar 27 can drive the stop bar 701 to move downward, and when the stop bar 701 is offset from the stone on the guide plate 7, the stone can pass over the stop bar 701 and finally fall from the bottom end of the guide plate 7. At the same time, when the magnetic strip 101 rotates with the inner stop tube 1 and is offset from the magnetic block 23, the magnetic block 23 is reset and leaves the switch 24, so that the second electromagnet 29 is in a power-off state, so that the stop bar 701 can bounce upward and limit the stone on the guide plate 7 again. In the process of dropping stones, the guide plate 7 is In a rotating state, the stones can be evenly placed around the inner retaining tube 1, and the setting of the retaining bar 701 can avoid continuous placement of multiple stones, thereby further improving the uniformity of placement. Of course, as the inner retaining tube 1 moves downward, it gradually approaches the top surface of the concrete. At this time, the device can be driven upward as a whole by the rope of the crane to avoid contact between the inner retaining tube 1 and the concrete surface. In addition, during actual operation, the staff can drive the device as a whole to move in the horizontal direction, thereby causing the stones to be evenly distributed on the concrete surface.

[0025] like Figure 4 , Figure 7-Figure 11 As shown, as a further development of the above scheme, when installing the connecting block 4, it can be slidably assembled on the top of the beam 3. At this time, the support platform 22 and the inner baffle tube 1 and other components can be moved on the horizontal plane along the length direction of the beam 3, so that the stones can be evenly placed on the concrete.

[0026] Further, in order to drive the connecting block 4 to slide on the crossbeam 3, refer to Figure 8As shown, a rotating shaft 19 is arranged in the sleeve 8, the top end of the rotating shaft 19 passes through the connecting block 4 and rotates with it through a bearing, and a gear 20 is fixedly sleeved on one end of the rotating shaft 19 passing through the connecting block 4, and a rack 18 meshing with the gear 20 is fixedly installed on the top of the crossbeam 3; A strip-shaped positioning groove 1901 is provided on the outer circumferential surface of the rotating shaft 19, and a positioning strip 26 that slidably cooperates with the positioning groove 1901 is fixedly provided on the inner wall of the sleeve 8. Through this structure, the rotating shaft 19 can be driven to rotate synchronously during the rotation of the sleeve 8, so that the connecting block 4 can slide above the beam 3 through the engagement of the gear 20 and the rack 18, so that the entire device can move horizontally along the beam 3; in actual use, due to the different sizes of stones, and as the inner baffle tube 1 moves downward, the number of stones falling on the guide plate 7 will also be different, Through this structure, when larger stones fall onto the guide plate 7 or the amount of stones falling onto the guide plate 7 increases, the overall weight of the guide plate 7 and the inner retaining tube 1 and other structures increases, so that the inner retaining tube 1 can move downward at a faster speed. At this time, the rotation speed of the sleeve 8 and the rotating shaft 19 is increased through the cooperation of the limit block 25 and the limit groove 801, so that the movement speed of the connecting block 4 at the top of the beam 3 is increased through the cooperation of the gear 20 and the rack 18, which causes the larger stones to be placed farther apart during the process of being placed into the concrete, which is beneficial to further improve the uniformity of stone placement.

[0027] In summary, this device can put stones around the inner baffle tube 1 by setting a spiral guide plate 7. At the same time, when the device as a whole moves in the horizontal direction, the stones can be evenly distributed in the concrete. The rotating shaft 19 can drive the device as a whole to move along the direction of the beam 3. At the same time, the speed of the overall movement of the device can be adjusted according to the overall weight of the stones falling on the guide plate 7, so that the distribution of the stones in the concrete is more reasonable.

[0028] like Figure 1-Figure 4 As shown, as another embodiment of the lifting device moving in the vertical direction as a whole, a pull plate 6 can be arranged above the cross beam 3, and a traction rope 5 is arranged between the pull plate 6 and the cross beam 3. Specifically, the bottom end of the traction rope 5 is fixedly connected to the cross beam 3, and the top end of the traction rope 5 passes through the pull plate 6 and slides with it. Figure 4 As shown, a reel 9 is provided above the pull plate 6, and the traction rope 5 passes through one end of the pull plate 6 and is fixedly connected to the reel 9, and a motor can be installed on the pull plate 6, and the output shaft of the motor is transmission-connected to the reel 9. Through this structure, the staff can control the motor during the process of throwing stones, thereby adjusting the height of the beam 3 to avoid the contact between the inner retaining tube 1 and the concrete.

[0029] Drawstrings 10 can be fixedly installed on both sides of the top surface of the inner baffle tube 1. Figure 4 , Figure 6 As shown, a connecting tube 12 is fixedly installed on the bottom surface of the crossbeam 3, and a winding shaft 16 is rotatably installed at one end of the connecting tube 12, and the top of the pull rope 10 is fixedly connected to the winding shaft 16. In actual use, a handle can be installed on one end of the winding shaft 16 passing through the connecting tube 12, so that it is convenient for the staff to drive the winding shaft 16 to rotate. A mounting frame is fixedly installed on the top of the connecting tube 12, and a first electromagnet 13 is fixedly installed at the bottom end of the mounting frame. The first electromagnet 13 is a ring-shaped structure. A pressure rod 15 is arranged at the center of the first electromagnet 13. The bottom end of the pressure rod 15 passes through the mounting frame and the connecting tube 12 and slides with the two. The first electromagnet 13 is away from the winding shaft 1 6 is provided with a connecting plate 14 at one end, and the above-mentioned pressure rod 15 is fixedly connected to the connecting plate 14, the connecting plate 14 is made of iron, and a spring is fixedly provided between the connecting plate 14 and the top surface inside the mounting frame. Through this structure, when the electromagnet is in an energized state, it can drive the connecting plate 14 and the pressure rod 15 to move downward, so that the bottom end of the pressure rod 15 presses the winding shaft 16, so as to lock the inner baffle tube 1 and other structures. Of course, in order to further improve the stability, a plurality of circular holes matching with the pressure rod 15 can be evenly opened on the outer circumference of the winding shaft 16. When the bottom end of the pressure rod 15 is inserted into the inside of the circular hole, the winding shaft 16 can be limited more stably.

[0030] Reference Figure 7 As shown, protrusions are fixedly provided on both sides of the top of the cross beam 3, and a guide rod 17 is fixedly provided between the two protrusions. The guide rod 17 passes through the connecting block 4 and slidably cooperates with the connecting block 4.

[0031] Reference Figure 8 As shown, a sealing block 21 can be fixedly installed at the top of the sleeve 8, so that the sealing block 21 and the fixed tube 11 are sealed together, and a guide hole 1101 is opened on the outer side surface of the fixed tube 11 near the top. Through this structure, when the sleeve 8 moves downward, the external gas can enter the fixed tube 11 through the guide hole 1101, so that the sleeve 8 can move slowly downward. Of course, this effect can also be achieved by adjusting the pressure between the above-mentioned pressure rod 15 and the winding shaft 16.

[0032] Reference Fig.11 As shown, a mounting hole is opened on the outer peripheral surface of the support platform 22, a shell is arranged on the outer side of the switch 24, the shell is fixedly arranged in the mounting hole, and a limit spring is fixedly arranged between the magnetic block 23 and the end surface of the shell.

[0033] Reference Fig.12 As shown, a supporting spring is fixedly arranged between the slide rod 27 and the second electromagnet 29 .

Claims

1. A loading and feeding device for flaky concrete construction, comprising a support platform and an inner baffle tube sleeved on the outer side of the support platform, characterized in that: The outer side of the inner baffle tube is sleeved with a spiral material guide plate, a fixed tube is arranged at the center of the support platform, a sleeve is fixedly installed on the bottom surface of the inner baffle tube, the sleeve extends into the fixed tube and can move in the vertical direction relative to the fixed tube, a spiral limiting groove is opened on the outer circumferential surface of the sleeve, and a limiting block that slides with the limiting groove is fixedly arranged on the inner wall of the fixed tube; A stop assembly is provided at the bottom end of the guide plate. During the rotation of the inner stop tube, the stop assembly can intermittently move in the vertical direction. When the stop assembly is offset from the stone on the guide plate, the stone can slide off the guide plate.

2. A loading and feeding device for rubble concrete construction according to claim 1, characterized in that: A connection block is fixedly arranged at the top end surface of the fixed pipe, a cross beam is arranged below the connection block, and the connection block is installed on the cross beam.

3. A loading and feeding device for rubble concrete construction according to claim 2, characterized in that: The stop assembly includes a baffle arranged at the bottom end of the guide plate, the baffle passes through the guide plate and slides with the guide plate, a boss is arranged under the guide plate, rod sleeves are fixedly installed on both sides of the top surface of the boss, a sliding rod is elastically installed on the top of the rod sleeve, the sliding rod is fixedly connected to the baffle, a second electromagnet is fixedly installed on the bottom end of the rod sleeve, the sliding rod is made of iron, a plurality of magnetic strips are fixedly embedded on the inner wall of the inner baffle tube, a magnetic block is elastically installed on the outer circumferential surface of the support platform, the magnetic block has the same magnetic pole on a side opposite to the magnetic strip, a switch is arranged at the end of the magnetic block away from the inner baffle tube, and the switch is electrically connected to the second electromagnet.

4. A loading and feeding device for rubble concrete construction according to claim 3, characterized in that: A rotating shaft is arranged in the sleeve, the top end of the rotating shaft passes through the connecting block and rotates with it, a gear is fixedly sleeved on one end of the rotating shaft passing through the connecting block, and a rack meshing with the gear is fixedly installed on the top of the crossbeam.

5. A loading and feeding device for rubble concrete construction according to claim 4, characterized in that: A strip-shaped positioning groove is provided on the outer peripheral surface of the rotating shaft, and a positioning strip which is slidably matched with the positioning groove is fixedly provided on the inner wall of the sleeve.

6. A loading and feeding device for rubble concrete construction according to claim 2, characterized in that: Both sides of the top of the crossbeam are fixedly provided with protrusions, and a guide rod is fixedly provided between the two protrusions. The guide rod passes through the connecting block and is slidably matched with the connecting block.

7. The loading and feeding device for rubble concrete construction according to claim 1 is characterized by: A sealing block is fixedly installed on the top end of the sleeve, and the sealing block is in sealing cooperation with the fixed tube. A flow guide hole is opened at a position near the top end on the outer side of the fixed tube.

8. The loading and feeding device for rubble concrete construction according to claim 1, characterized in that: An outer retaining tube is sleeved on the outer side of the inner retaining tube, and the material guide plate is fixedly installed between the inner retaining tube and the outer retaining tube.

9. A loading and feeding device for rubble concrete construction according to claim 3, characterized in that: A supporting spring is fixedly arranged between the sliding rod and the second electromagnet.

10. The loading and feeding device for rubble concrete construction according to claim 3, characterized in that: A mounting hole is provided on the outer peripheral surface of the support platform, and a shell is provided on the outer side of the switch, and the shell is fixedly arranged in the mounting hole.

Citation Information

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