Municipal concrete manhole cover casting device and use method

Abstract

The present invention belongs to the technical field of manhole cover casting molds, and in particular to a municipal concrete manhole cover casting device and a method of using the same. The present invention comprises: a base and a vibrating material seat, wherein the vibrating material seat is installed above the base; a material blocking mechanism, wherein a plurality of material blocking mechanisms are provided and are evenly distributed along the circumference of the vibrating material seat, and the plurality of material blocking mechanisms can jointly form circular casting troughs of different diameters; the material blocking mechanism comprises an arc-shaped first elastic plate and a second elastic plate, wherein the second elastic plate is provided with a pair of plates symmetrically and slidably connected to the two ends of the first elastic plate, and the first elastic plate is slidably connected to the vibrating material seat; the present invention drives the material blocking mechanism to move by a driving mechanism, wherein the material blocking mechanism is provided with a first elastic plate and a second elastic plate that can be bent, so that the material blocking mechanisms can jointly form circular casting troughs of different diameters, thereby producing concrete manhole covers of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of manhole cover casting moulds, and in particular to a municipal concrete manhole cover casting device and a use method thereof. Background Art

[0002] Concrete manhole covers are widely used as important components in sewer construction. At present, round manhole covers are mostly used in urban road administration. Round manhole covers are widely used because they are not easy to tilt and have good reliability and safety. Therefore, the production of manhole covers has gradually shifted from small-batch production to large-scale production. Concrete manhole covers are cast with the help of manhole cover molds during the production process, and the shaping is completed by pouring concrete on the manhole cover molds.

[0003] Most of the existing manhole cover casting molds are integrated structures, so that the manhole cover molds can only produce manhole covers of a single size during use and production. If manhole covers of different sizes are to be produced, molds of different sizes and models are required, which greatly reduces the practicality and scope of use of the manhole cover casting molds. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a municipal concrete manhole cover casting device and a method of use. By providing multiple material blocking mechanisms, casting troughs of different diameters can be enclosed to produce concrete manhole covers of different sizes, aiming to solve the problems in the background technology.

[0005] In order to achieve the above technical objectives, the specific technical scheme of the present invention is as follows: a municipal concrete manhole cover casting device proposed by the present invention comprises: a base and a vibrating material seat, the vibrating material seat is installed above the base; a material blocking mechanism, a plurality of material blocking mechanisms are provided and are evenly distributed along the circumference of the vibrating material seat, and the plurality of material blocking mechanisms can together form a circular casting trough with different diameters; the material blocking mechanism comprises an arc-shaped first elastic plate and a second elastic plate, the second elastic plate is provided with a pair of symmetrically slidably connected to the two ends of the first elastic plate, and the first elastic plate is slidably connected to the vibrating material seat; a plurality of fixed plates are fixedly connected to the vibrating material seat, a threaded rod is fixedly connected to the first elastic plate, the threaded rod is movably connected to the fixed plate, and a moving block is connected to the threaded rod, a threaded sleeve threadedly connected to the threaded rod is rotatably connected to the moving block, and a pair of support rods are rotatably connected to the two ends of the moving block and the first elastic plate; when the moving block moves along the surface of the threaded rod, the bending degree of the first elastic plate can be changed.

[0006] As a preferred technical solution of the present invention, the periphery of the material blocking mechanism is connected with multiple ropes for adjusting the bending degree of the second elastic plate, and a winch mechanism is installed on one of the material blocking mechanisms for tightening the ropes; the surface of the first elastic plate is fixedly connected with multiple first rope tubes for the ropes to pass through, and the first rope tubes are symmetrically connected to the two ends of the first elastic plate; the surface of the second elastic plate is fixedly connected with a second rope tube for the ropes to pass through.

[0007] As a preferred technical solution of the present invention, a driving mechanism is installed under the vibrating material seat to drive the material blocking mechanism to move; the driving mechanism includes: a fixed frame, fixedly connected to the vibrating material seat; a driving motor, installed on the fixed frame, and the driving motor is connected to a screw rod; a lifting seat, threadedly connected to the screw rod, and a bracket corresponding to the material blocking mechanism is fixedly connected to the lifting seat, and a connecting rod is hinged between the bracket and the threaded rod.

[0008] As a preferred technical solution of the present invention, the vibrating material seat is provided with elastic baffles corresponding to the material baffle mechanisms one by one, and the elastic baffles are in contact with the inner surfaces of the first elastic plate and the second elastic plate.

[0009] As a preferred technical solution of the present invention, a pressure plate cooperating with the elastic baffle is fixedly connected to the first elastic plate, and a C-shaped frame is fixedly connected to the second elastic plate, a clamping bolt is threadedly connected to the C-shaped frame, and a pressure block is connected to the lower end of the clamping bolt for clamping and fixing the elastic baffle.

[0010] As a preferred technical solution of the present invention, the inner surface of the first elastic plate is provided with a sliding groove slidably connected to the second elastic plate, the fixed plate is fixedly connected to a guide cylinder, and the first elastic plate is fixedly connected to a guide rod slidably connected to the guide cylinder.

[0011] As a preferred technical solution of the present invention, the hoisting mechanism includes a frame, a reel is rotatably connected to the frame, a rope is wound on the surface of the reel, and the reel is coaxially fixedly connected to a worm gear; a hoisting motor is installed on the frame, and a worm gear matching the worm gear is fixedly connected to the rotating shaft of the hoisting motor.

[0012] As a preferred technical solution of the present invention, a plurality of cylindrical springs are fixedly connected between the base and the vibrating material seat, and a cylinder matching with the cylindrical springs is fixedly connected to both the base and the vibrating material seat.

[0013] As a preferred technical solution of the present invention, a plurality of scale rings with different diameters are provided on the surface of the vibration material seat.

[0014] A method for using a municipal concrete manhole cover casting device comprises the following steps:

[0015] Step 1: The material blocking mechanism is driven by the driving mechanism to move to a scale circle position that is consistent with the diameter of the manhole cover, and then the bending degree of the first elastic plate is adjusted by changing the position of the moving block so that the first elastic plate coincides with the scale circle;

[0016] Step 2: Adjust the position of the second elastic plate so that the second elastic plates on adjacent material blocking mechanisms contact each other; then tighten the rope through the hoisting mechanism, and adjust the bending degree of the second elastic plate through the rope so that the bending degree of the second elastic plate matches that of the first elastic plate;

[0017] Step 3: Place the elastic baffles that match the size of the scale circle one by one inside the material blocking mechanism, tighten and fix them with the clamping bolts, so that a circular casting trough is formed between the baffles, and then lay a layer of padding paper at the bottom of the casting trough;

[0018] Step 4: Place the steel skeleton in the casting trough, and then pour concrete into the casting trough. During the pouring process, the vibrating seat maintains a vibrating state to ensure uniform concrete pouring.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention drives the retaining mechanism to move through a driving mechanism, and the retaining mechanism is provided with a first elastic plate and a second elastic plate that can be bent, so that the retaining mechanisms can jointly form circular casting troughs of different diameters, thereby producing concrete manhole covers of different sizes.

[0021] 2. The present invention provides a plurality of ropes on the periphery of the material blocking mechanism, the ropes are connected to the first elastic plate and the second elastic plate, the ropes are tightened by a hoisting mechanism, and the curvature of the second elastic plate is adjusted so that the curvature of the second elastic plate matches that of the first elastic plate, thereby ensuring the circularity of the casting trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic structural diagram of a municipal concrete manhole cover casting device.

[0023] Figure 2 This is a schematic diagram of the material vibrating seat and material blocking mechanism proposed in the present invention.

[0024] Figure 3 for Figure 2 Schematic diagram from another angle.

[0025] Figure 4 This is a schematic diagram of the material blocking mechanism proposed in the present invention.

[0026] Figure 5 This is a schematic diagram from another angle of the material blocking mechanism proposed by the present invention.

[0027] Figure 6 The figure is a schematic structural diagram of the hoisting mechanism proposed in the present invention.

[0028] Figure 7 This is a schematic diagram of the structure of the driving mechanism proposed in the present invention.

[0029] In the figure: 1. base; 2. vibrating material seat; 3. material blocking mechanism; 31. first elastic plate; 32. second elastic plate; 321. second rope tube; 322. C-shaped frame; 323. clamping bolt; 324. pressing block; 33. fixing plate; 34. threaded rod; 35. moving block; 351. threaded sleeve; 36. support rod; 37. guide cylinder; 38. guide rod; 39. pressing plate; 310. first rope tube; 311. slide groove; 4. cylindrical spring; 5. driving mechanism; 501. fixing frame; 502. lifting seat; 503. driving motor; 504. bracket; 505. connecting rod; 506. screw rod; 6. hoisting mechanism; 601. frame; 602. reel; 603. hoisting motor; 604. worm; 605. worm wheel; 7. elastic baffle; 8. scale ring; 9. rope; 10. cylinder. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Embodiment: This embodiment discloses a municipal concrete manhole cover casting device, such as Figure 1-Figure 7 As shown, it includes: a base 1 and a vibrating material seat 2, the vibrating material seat 2 is installed above the base 1, and the vibrating material seat 2 is circular; a vibration motor is installed at the bottom of the vibrating material seat 2 to drive the vibrating material seat 2 to vibrate, so that the concrete is poured evenly, and a plurality of cylindrical springs 4 are fixedly connected between the base 1 and the vibrating material seat 2, and four cylindrical springs 4 are provided to ensure the vibration stability of the vibrating material seat 2, and a cylinder 10 matched with the cylindrical spring 4 is fixedly connected to the base 1 and the vibrating material seat 2 to ensure the stability of the cylindrical spring 4; a material blocking mechanism 3, a plurality of material blocking mechanisms 3 are provided and are evenly distributed along the circumference of the vibrating material seat 2, and the plurality of material blocking mechanisms 3 can together form a circular casting trough with different diameters, so that manhole covers of different sizes can be produced.

[0032] like Figure 4-Figure 5As shown, the material blocking mechanism 3 includes an arc-shaped first elastic plate 31 and a second elastic plate 32, both of which have certain bending deformation properties and can be made of plastic material. The second elastic plate 32 is provided with a pair of second elastic plates 32 that are symmetrically slidably connected to the two ends of the first elastic plate 31, and the second elastic plates 32 on adjacent material blocking mechanisms 3 are in contact with each other. The inner surface of the first elastic plate 31 is provided with a sliding groove 311 that is slidably connected to the second elastic plate 32, thereby ensuring that the second elastic plate 32 will not be separated from the first elastic plate 31, wherein the first elastic plate 31 is slidably connected to the vibration material seat 2, and the moving direction of the first elastic plate 31 is toward the center of the vibration material seat 2; a plurality of fixed plates 33 are fixedly connected to the vibration material seat 2, and a threaded rod 34 is fixedly connected to the first elastic plate 31, and the threaded rod 34 is movably connected to the fixed plate 33, and one end of the threaded rod 34 passes through the fixed plate 3 3, and the threaded rod 34 is connected to a moving block 35, and a threaded sleeve 351 threadedly connected to the threaded rod 34 is rotatably connected to the moving block 35, and a pair of struts 36 are rotatably connected to the two ends of the moving block 35 and the first elastic plate 31; the moving block 35 can be driven to move by rotating the threaded sleeve 351, and when the moving block 35 moves along the surface of the threaded rod 34, the bending degree of the first elastic plate 31 can be changed. When the diameter of the casting groove to be surrounded is larger, the bending degree of the first elastic plate 31 is smaller; similarly, when the diameter of the casting groove to be surrounded is smaller, the bending degree of the first elastic plate 31 is larger; this embodiment can enclose casting grooves of different diameters and produce concrete manhole covers of different sizes by moving the position of the first elastic plate 31, adjusting the bending degrees of the first elastic plate 31 and the second elastic plate 32, and changing the protruding length of the second elastic plate 32.

[0033] Preferably, a guide cylinder 37 is fixedly connected to the fixed plate 33, and a guide rod 38 slidably connected to the guide cylinder 37 is fixedly connected to the first elastic plate 31, so that the first elastic plate 31 can move stably, the inner diameter of the guide cylinder 37 is slightly larger than the diameter of the guide rod 38, and the guide rod 38 is close to the center position of the first elastic plate 31. When the bending degree of the first elastic plate 31 changes, the position deviation of the guide rod 38 is negligible, and the guide rod 38 is always movably connected to the guide cylinder 37.

[0034] Among them, Figure 2 and Figure 4As shown, in order to adjust the bending degree of the second elastic plate 32 to be the same as that of the first elastic plate 31, a plurality of ropes 9 are connected to the periphery of the material blocking mechanism 3 for adjusting the bending degree of the second elastic plate 32. In this embodiment, the number of ropes 9 is two and they are distributed up and down, and the ropes are steel wire ropes to improve the limiting stretching effect on the second elastic plate 32, and a winch mechanism 6 is installed on one of the material blocking mechanisms 3 for tightening the ropes 9; a plurality of first rope tubes 310 for the ropes 9 to pass through are fixedly connected to the surface of the first elastic plate 31, and the first rope tubes 310 are symmetrically connected to the first elastic plate The second elastic plate 32 has two ends, and the second rope tube 321 for the rope 9 to pass through is fixedly connected to the surface of the second elastic plate 32. The inner diameters of the first rope tube 310 and the second rope tube 321 are slightly larger than the diameter of the rope 9. The two ends of the rope 9 are connected to the hoisting mechanism 6. The rope 9 is tightened by the hoisting mechanism 6. The rope 9 applies an outward pulling force or an inward pressure to the second elastic plate 32, driving the second elastic plate 32 to bend outward or inward, so that the bending degree of the second elastic plate 32 is consistent with the bending degree of the first elastic plate 31, ensuring that the circular degree of the casting trough is high.

[0035] like Figure 6 As shown, the hoisting mechanism 6 includes a frame 601, which is fixedly installed in the middle position of the first elastic plate 31. A reel 602 is rotatably connected to the frame 601, and both ends of the rope 9 are wound on the surface of the reel 602. When the reel 602 rotates, the rope 9 is tightened or loosened. The reel 602 is coaxially fixedly connected with a worm gear 605; a hoisting motor 603 is installed on the frame 601, and a worm 604 cooperating with the worm gear 605 is fixedly connected to the rotating shaft of the hoisting motor 603. The design of the worm gear 604 and the worm gear 605 prevents the reel 602 from reversing and causing the rope 9 to loosen; in this embodiment, the hoisting motor 603 drives the reel 602 to rotate, thereby tightening the rope 9 and adjusting the curvature of the second elastic plate 32.

[0036] Preferably, the vibrating seat 2 is provided with an elastic baffle 7 corresponding to the baffle mechanism 3 one by one, the elastic baffle 7 has a certain bending performance, the elastic baffle 7 can be made of steel plate, and the elastic baffle 7 is in contact with the inner surfaces of the first elastic plate 31 and the second elastic plate 32; in this embodiment, the number of elastic baffles 7 is four, and when concrete manhole covers of different sizes are produced, the elastic baffles 7 of corresponding sizes can be directly replaced without replacing the baffle mechanism 3; during pouring, the elastic baffle 7 is tightly fitted with the inner surfaces of the first elastic plate 31 and the second elastic plate 32 under the pressure of concrete, and the peripheral surface of the concrete manhole cover is plasticized by the elastic baffle 7, so that the peripheral surface of the concrete manhole cover is smooth and the demolding process is convenient.

[0037] Preferably, a pressure plate 39 cooperating with the elastic baffle plate 7 is fixedly connected to the first elastic plate 31 to limit the elastic baffle plate 7, and a C-shaped frame 322 is fixedly connected to the second elastic plate 32, and a clamping bolt 323 is threadedly connected to the C-shaped frame 322, and a pressure block 324 is connected to the lower end of the clamping bolt 323 to clamp and fix the elastic baffle plate 7; the elastic baffle plate 7 is clamped by the clamping bolt 323, so that the lower end of the elastic baffle plate 7 maintains a sealed and close contact with the surface of the vibrating material seat 2 to avoid concrete leakage.

[0038] like Figure 3 and Figure 7 As shown, a driving mechanism 5 is installed below the vibrating seat 2 for driving each material blocking mechanism 3 to move; the driving mechanism 5 includes: a fixed frame 501, fixedly connected to the vibrating seat 2; a driving motor 503, installed on the fixed frame 501, and the driving motor 503 is connected to a screw rod 506; a lifting seat 502, threadedly connected to the screw rod 506, and a bracket 504 corresponding to the material blocking mechanism 3 is fixedly connected to the lifting seat 502, and a connecting rod 505 is hinged between the bracket 504 and the threaded rod 34; the screw rod 506 is driven to rotate by the driving motor 503, and the lifting seat 502 is driven to rise and fall, thereby driving the four material blocking mechanisms 3 to move synchronously at the same time, and the moving distance is the same, so as to facilitate the formation of a circular casting trough.

[0039] Preferably, a plurality of scale rings 8 of different diameters are provided on the surface of the vibrating base 2. By setting the scale rings 8, it is convenient to accurately move the material blocking mechanism 3 to a specified position, thereby producing concrete manhole covers of different sizes.

[0040] This embodiment also discloses a method for using a municipal concrete manhole cover casting device, based on the above casting device, comprising the following steps:

[0041] Step 1: The material blocking mechanism 3 is driven by the driving mechanism 5 to move to the position of the scale circle 8 which is consistent with the diameter of the manhole cover, and then the bending degree of the first elastic plate 31 is adjusted by changing the position of the moving block 35 so that the first elastic plate 31 coincides with the scale circle 8;

[0042] Step 2: Adjust the position of the second elastic plate 32 so that the second elastic plates 32 on adjacent material blocking mechanisms 3 are in contact with each other; then tighten the rope 9 through the hoisting mechanism 6, and adjust the bending degree of the second elastic plate 32 through the rope 9 so that the bending degree of the second elastic plate 32 is adapted to that of the first elastic plate 31;

[0043] Step 3: Place the elastic baffles 7 that match the size of the scale ring 8 one by one inside the material blocking mechanism 3, and tighten and fix them by the tightening bolts 323, so that the elastic baffles 7 form a circular casting groove, and the elastic baffles 7 are in contact and sealed with each other, and then lay a layer of padding paper at the bottom of the casting groove to facilitate the demoulding of the concrete manhole cover;

[0044] Step 4: Place the steel bar skeleton in the casting trough, and then pour concrete into the casting trough. During the pouring process, the vibrating base 2 maintains a vibrating state to ensure uniform concrete pouring.

[0045] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A municipal concrete manhole cover casting device, characterized in that: include: A base (1) and a vibrating material base (2), wherein the vibrating material base (2) is mounted above the base (1); A material blocking mechanism (3), wherein a plurality of the material blocking mechanisms (3) are provided and are evenly distributed along the circumference of the vibrating base (2), and the plurality of material blocking mechanisms (3) can together form a circular casting trough with different diameters; The material blocking mechanism (3) comprises an arc-shaped first elastic plate (31) and a second elastic plate (32), the second elastic plate (32) being provided with a pair of symmetrically slidably connected to the two ends of the first elastic plate (31), and the first elastic plate (31) being slidably connected to the material vibration seat (2); A plurality of fixed plates (33) are fixedly connected to the vibrating material seat (2); a threaded rod (34) is fixedly connected to the first elastic plate (31); the threaded rod (34) is movably connected to the fixed plate (33); a moving block (35) is connected to the threaded rod (34); a threaded sleeve (351) threadably connected to the threaded rod (34) is rotatably connected to the moving block (35); a pair of support rods (36) are rotatably connected to both ends of the moving block (35) and the first elastic plate (31); when the moving block (35) moves along the surface of the threaded rod (34), the bending degree of the first elastic plate (31) can be changed; The periphery of the material blocking mechanism (3) is connected to a plurality of ropes (9) for adjusting the bending degree of the second elastic plate (32), and a winch mechanism (6) is installed on one of the material blocking mechanisms (3) for tightening the ropes (9); a plurality of first rope tubes (310) for the ropes (9) to pass through are fixedly connected to the surface of the first elastic plate (31), and the first rope tubes (310) are symmetrically connected to the two ends of the first elastic plate (31); a second rope tube (321) for the ropes (9) to pass through is fixedly connected to the surface of the second elastic plate (32); A driving mechanism (5) is installed below the vibrating material seat (2) for driving the material blocking mechanism (3) to move; the driving mechanism (5) comprises: a fixing frame (501) fixedly connected to the vibrating material seat (2); a driving motor (503) installed on the fixing frame (501), the driving motor (503) being connected to a screw rod (506); a lifting seat (502) being threadedly connected to the screw rod (506), a bracket (504) corresponding to each of the material blocking mechanisms (3) being fixedly connected to the lifting seat (502), a connecting rod (505) being hingedly connected between the bracket (504) and the threaded rod (34); The vibrating material seat (2) is provided with an elastic baffle (7) corresponding one-to-one to the material baffle mechanism (3), and the elastic baffle (7) is in contact with the inner surfaces of the first elastic plate (31) and the second elastic plate (32).

2. A municipal concrete manhole cover casting device according to claim 1, characterized in that: A pressing plate (39) cooperating with the elastic baffle (7) is fixedly connected to the first elastic plate (31), and a C-shaped frame (322) is fixedly connected to the second elastic plate (32). A clamping bolt (323) is threadedly connected to the C-shaped frame (322), and a pressing block (324) is connected to the lower end of the clamping bolt (323) for clamping and fixing the elastic baffle (7).

3. A municipal concrete manhole cover pouring device according to claim 2, characterized in that: The inner surface of the first elastic plate (31) is provided with a sliding groove (311) slidably connected to the second elastic plate (32); the fixed plate (33) is fixedly connected to a guide cylinder (37); and the first elastic plate (31) is fixedly connected to a guide rod (38) slidably connected to the guide cylinder (37).

4. A municipal concrete manhole cover casting device according to claim 3, characterized in that: The hoisting mechanism (6) comprises a frame (601), a reel (602) is rotatably connected to the frame (601), a rope (9) is wound on the surface of the reel (602), and the reel (602) is coaxially and fixedly connected to a worm gear (605); a hoisting motor (603) is mounted on the frame (601), and a worm (604) cooperating with the worm gear (605) is fixedly connected to the rotating shaft of the hoisting motor (603).

5. A municipal concrete manhole cover casting device according to claim 4, characterized in that: A plurality of cylindrical springs (4) are fixedly connected between the base (1) and the vibrating material seat (2), and a cylinder (10) matching the cylindrical springs (4) is fixedly connected to both the base (1) and the vibrating material seat (2).

6. A municipal concrete manhole cover casting device according to claim 5, characterized in that: The surface of the vibrating material seat (2) is provided with a plurality of scale rings (8) of different diameters.

7. A method for using a municipal concrete manhole cover casting device, using the municipal concrete manhole cover casting device as claimed in claim 6, characterized in that: The following steps are involved: Step 1: The material blocking mechanism (3) is driven by the driving mechanism (5) to move to the position of the scale circle (8) having the same size as the diameter of the manhole cover, and then the bending degree of the first elastic plate (31) is adjusted by changing the position of the moving block (35) so that the first elastic plate (31) coincides with the scale circle (8); Step 2: adjusting the position of the second elastic plate (32) so that the second elastic plates (32) on adjacent material blocking mechanisms (3) are in contact with each other; then tightening the rope (9) through the hoisting mechanism (6), and adjusting the bending degree of the second elastic plate (32) through the rope (9) so that the bending degree of the second elastic plate (32) matches that of the first elastic plate (31); Step 3: Place the elastic baffles (7) that match the size of the scale ring (8) one by one on the inner side of the material blocking mechanism (3), and tighten and fix them by means of the tightening bolts (323) so that a circular casting trough is formed between the elastic baffles (7), and then lay a layer of padding paper at the bottom of the casting trough; Step 4: Place the steel bar skeleton in the casting trough, and then pour concrete into the casting trough. During the pouring process, the vibrating base (2) maintains a vibrating state to ensure uniform concrete pouring.

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