Centrifugal device for pipe pile mold

Abstract

The utility model relates to the technical field of tubular pile production, and discloses a centrifugal device for a tubular pile mold, which comprises a support, a plurality of rotating shafts, a first driving device, a friction wheel, a movable seat, a pressing wheel, a second driving device, a third driving device and a locking component, and the rotating shafts are provided with a plurality of rollers which are used for supporting the tubular pile mold. The centrifugal machine has the advantages that after centrifugal operation is finished, the third driving device drives the movable seat to move so that the pressing wheel can be tightly pressed on the friction wheel, the second driving device drives the pressing wheel to rotate, and the friction wheel, the rotating shaft, the rolling wheel and the mold are driven to rotate; when the mold rotates until the screw of the mold closing bolt is vertically downward and the upper mold is just above the lower mold, the third driving device drives the movable seat to move so as to enable the pressing wheel to leave the friction wheel, and the friction plate in the locking assembly abuts against the end face of the friction wheel to lock the positions of the friction wheel, the rotating shaft, the rolling wheel and the mold; the effect that the position of the mold can be rotationally adjusted after centrifugal operation is finished is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe pile production, and particularly relates to a centrifugal device for a pipe pile mold. Background Technique

[0002] Prestressed high-strength concrete pipe piles are hollow cylindrical concrete precast members made by the pre-tensioned centrifugal forming process and steam curing at about 180°C under 10 atmospheres. During the production of concrete pipe piles, the steel strands are first cut short, straightened, and then high-strength wires are welded to the steel strands through a rolling welding machine to form a steel reinforcement cage. End plates are respectively installed at both ends of the steel reinforcement cage, and then the steel reinforcement cage is placed into the pipe pile mold. The pipe pile mold includes an upper mold and a lower mold, and the upper mold and the lower mold are fixed by clamping bolts. After the mold is clamped, the steel reinforcement cage is located inside the mold, and then concrete is injected into the mold. After prestress tensioning, the mold is transferred to the centrifugal device, and two rollers in the centrifugal device drive the mold to rotate at a high speed. Under the action of centrifugal force, the concrete gathers on the inner wall of the mold to form a hollow concrete pipe pile.

[0003] In the prior art, after the centrifugal device completes the centrifugal treatment of the mold, the position of the clamping bolt is random when the mold stops, which will affect the subsequent demolding operation. In this case, on-site operators generally choose to jog the centrifuge multiple times until the screw of the clamping bolt faces downwards and the upper mold is exactly above the lower mold. The operation is very cumbersome and time-consuming, seriously affecting the production efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a centrifugal device for a pipe pile mold, which has the effect of being able to rotate and adjust the position of the mold after the centrifugal operation is completed.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: A centrifugal device for a pipe pile mold includes a support, a plurality of rotating shafts rotatably arranged on the support, a first driving device for driving the rotating shafts to rotate, a plurality of rollers installed on the rotating shafts, the rollers are used to support the pipe pile mold, and further includes a friction wheel fixed on the rotating shafts, a movable seat, a pressing wheel rotatably installed on the movable seat, a second driving device for driving the pressing wheel to rotate, a third driving device for driving the movable seat to move so that the pressing wheel abuts against or leaves the friction wheel, and a locking assembly. The locking assembly includes a friction plate and a locking hydraulic cylinder for driving the friction plate to abut against the friction wheel.

[0006] By adopting the above technical solution, the roller supports the mold, the first driving device drives the rotating shaft to rotate, the roller on the rotating shaft drives the mold to rotate, and centrifugal operation is carried out. After the centrifugal operation is completed. The third driving device drives the movable seat to approach the friction wheel until the pressing wheel presses tightly on the friction wheel, the second driving device drives the pressing wheel to rotate, and then drives the friction wheel, the rotating shaft and the roller to rotate, so that the mold rotates until the mold closing bolt screw on the mold is in a vertically downward state, and the upper mold is exactly above the lower mold. At this time, the third driving device drives the movable seat away from the friction wheel, and the locking hydraulic cylinder moving rod acts to drive the friction plate to press tightly against the end face of the friction wheel, locking the positions of the friction wheel, the rotating shaft and the mold.

[0007] A further setting of the present utility model is that: the second driving device is a radial piston hydraulic motor.

[0008] By adopting the above technical solution, the radial piston hydraulic motor can output power with low speed and large torque, which is suitable for adjusting the position of a mold with a large weight.

[0009] A further setting of the present utility model is that: the third driving device is a driving hydraulic cylinder.

[0010] A further setting of the present utility model is that: the third driving device is installed and fixed on the support.

[0011] By adopting the above technical solution, the support provides an installation position for the third driving device.

[0012] A further setting of the present utility model is that: it further includes two slide rails, each slide rail is slidably connected with a slider, and both of the two sliders are fixed on the movable seat.

[0013] By adopting the above technical solution, the slide rails are used to guide the movement track of the movable seat.

[0014] A further setting of the present utility model is that: the movable seat includes a seat body and a mounting shaft, both ends of the mounting shaft are installed on the seat body through cylindrical roller bearings, and the pressing wheel is fixed on the mounting shaft.

[0015] By adopting the above technical solution, the pressure between the pressing wheel and the friction wheel needs to be large enough so that the generated friction force can drive the rotating shaft and the mold to rotate. Therefore, cylindrical roller bearings are provided, which can bear a large radial load.

[0016] A further setting of the present utility model is that: the first driving device includes an AC asynchronous motor.

[0017] By adopting the above technical solution, after the AC asynchronous motor is powered off, its power output shaft can rotate freely, which is convenient for adjusting and locking the position of the mold.

[0018] A further setting of the utility model is that a plurality of the rotating shafts are divided into two groups, and a plurality of rotating shafts in each group are coaxially arranged.

[0019] A further setting of the utility model is that a plurality of rotating shafts in each group are sequentially connected through couplings.

[0020] A further setting of the utility model is that power is transmitted between the two groups of rotating shafts through chain drive to realize linkage.

[0021] The beneficial effect of the utility model is that after the centrifugal operation is completed, the third driving device drives the movable seat to move so that the pressing wheel presses against the friction wheel, and the second driving device drives the pressing wheel to rotate, driving the friction wheel, the rotating shaft, the roller and the mold to rotate. When the mold rotates to the position where the die closing bolt screw is vertically downward and the upper mold is exactly above the lower mold, the third driving device drives the movable seat to move so that the pressing wheel leaves the friction wheel, and the friction plate in the locking assembly abuts against the end face of the friction wheel to lock the positions of the friction wheel, the rotating shaft, the roller and the mold, achieving the effect that the mold position can be rotated and adjusted after the centrifugal operation is completed. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a structural schematic diagram of the present utility model.

[0024] Figure 2 It is a schematic diagram of the structural relationship among the first driving device, the second driving device and the third driving device of the present utility model Figure 1 .

[0025] Figure 3 It is a schematic diagram of the structural relationship among the first driving device, the second driving device and the third driving device of the present utility model Figure 2 .

[0026] Figure 4 It is Figure 3 an enlarged view of part A of

[0027] In the figure, 1, support; 11, slide rail; 2, rotating shaft; 21, roller; 22, friction wheel; 3, first driving device; 4, movable seat; 41, seat body; 42, mounting shaft; 5, pressing wheel; 6, second driving device; 7, third driving device; 8, locking assembly; 81, locking hydraulic cylinder; 82, friction plate; 9, pipe pile mold; 91, upper mold; 92, lower mold; 93, die closing bolt. Detailed implementation mode

[0028] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work belong to the scope of protection of the present utility model.

[0029] A centrifugal device for a pipe pile mold, as Figure 1 、 Figure 2 、 Figure 3 shown, includes a support 1, a plurality of rotating shafts 2 rotatably arranged on the support 1, and a first driving device 3 for driving the rotating shafts 2 to rotate. The plurality of rotating shafts 2 are divided into two groups, and the plurality of rotating shafts 2 within each group are arranged coaxially. The plurality of rotating shafts 2 within each group are sequentially connected by couplings. A first sprocket is fixed on one of the rotating shafts 2 within each group, and a second sprocket is fixed on one of the rotating shafts 2 within the other group. A chain is installed between the first sprocket and the second sprocket. The first driving device 3 includes an AC asynchronous motor, and the output shaft of the AC asynchronous motor is used to drive one of the rotating shafts 2 in one group to rotate, thereby driving all the rotating shafts 2 to rotate. The pipe pile mold 9 includes an upper mold 91, a lower mold 92, and a mold closing bolt 93. The upper mold 91 and the lower mold 92 are fastened by the mold closing bolt 93.

[0030] As Figure 2 、 Figure 3 shown, the centrifugal device for the pipe pile mold further includes two slide rails 11, two sliders, a second driving device 6, and a third driving device 7. The two sliders are respectively slidably connected to the two slide rails 11. An activity seat 4 is provided above the two sliders, and the activity seat 4 is fixedly connected to the two sliders. The third driving device 7 is a driving hydraulic cylinder installed on the support 1, and the piston rod of the driving hydraulic cylinder is fixedly connected to the activity seat 4, and it can drive the activity seat 4 to slide along the guide rail. The activity seat 4 includes a seat body 41 and a mounting shaft 42. The two ends of the mounting shaft 42 are installed on the seat body 41 through cylindrical roller bearings. A pressing wheel 5 is fixed on the mounting shaft 42. The second driving device 6 is a radial piston hydraulic motor installed and fixed on the seat body 41, and it is used to drive the mounting shaft 42 and the pressing wheel 5 to rotate.

[0031] As Figure 2 、 Figure 3 shown, a friction wheel 22 is fixed on one of the rotating shafts 2. When the piston rod of the driving hydraulic cylinder extends, it drives the activity seat 4 to approach the friction wheel 22, and the pressing wheel 5 is pressed against the friction wheel 22. When the piston rod of the driving hydraulic cylinder retracts, it drives the activity seat 4 to move away from the friction wheel 22, and the pressing wheel 5 is separated from the friction wheel 22.

[0032] As Figure 3 、 Figure 4As shown in the figure, the centrifugal device for the pipe pile mold further includes a locking assembly 8. The locking assembly 8 includes a friction plate 82 and a locking hydraulic cylinder 81 that drives the friction plate 82 to press against the friction wheel 22. When the piston rod of the locking hydraulic cylinder 81 extends, the friction plate 82 presses against the end face of the friction wheel 22 to lock the position of the friction wheel 22. When the piston rod of the locking hydraulic cylinder 81 retracts, the friction plate 82 moves away from the end face of the friction wheel 22 to unlock the position of the friction wheel 22.

[0033] Working principle: The roller 21 supports the pipe pile mold 9. The first driving device 3 drives the rotating shaft 2 to rotate. The roller 21 on the rotating shaft 2 drives the pipe pile mold 9 to rotate for centrifugal operation. After the centrifugal operation is completed, the third driving device 7 drives the movable seat 4 to approach the friction wheel 22 until the pressing wheel 5 presses tightly against the friction wheel 22. The second driving device 6 drives the pressing wheel 5 to rotate, thereby driving the friction wheel 22, the rotating shaft 2, and the roller 21 to rotate, causing the pipe pile mold 9 to rotate until the screw of the mold closing bolt 93 on the pipe pile mold 9 is vertically downward and the upper mold 91 is exactly above the lower mold 92. At this time, the third driving device 7 drives the movable seat 4 away from the friction wheel 22, and the movable rod of the locking hydraulic cylinder 81 acts to drive the friction plate 82 to press against the end face of the friction wheel 22 to lock the positions of the friction wheel 22, the rotating shaft 2, and the pipe pile mold 9.

Claims

1. A centrifugal device for a pipe pile mold, comprising a support (1), a plurality of rotating shafts (2) rotatably arranged on the support (1), and a first driving device (3) for driving the rotating shafts (2) to rotate, wherein the rotating shafts (2) are provided with a plurality of rollers (21), and the rollers (21) are used to support the pipe pile mold (9), characterized in that: The invention also comprises a friction wheel (22) fixed on the rotating shaft (2), a movable seat (4), a pressure wheel (5) rotatably mounted on the movable seat (4), a second driving device (6) for driving the pressure wheel (5) to rotate, a third driving device (7) for driving the movable seat (4) to move so that the pressure wheel (5) is pressed against or separated from the friction wheel (22), and a locking assembly (8), wherein the locking assembly (8) comprises a friction plate (82) and a locking hydraulic cylinder (81) for driving the friction plate (82) to press against the friction wheel (22).

2. The centrifugal device for a pipe pile mold according to claim 1, characterized in that: The second driving device (6) is a radial piston hydraulic motor.

3. The centrifugal device for a pipe pile mold according to claim 1, characterized in that: The third driving device (7) is a driving hydraulic cylinder.

4. The centrifugal device for a pipe pile mold according to claim 3, characterized in that: The third driving device (7) is mounted and fixed on the support (1).

5. The centrifugal device for a pipe pile mold according to claim 1, characterized in that: It also comprises two slide rails (11), each of which is slidably connected to a slider, and both of the sliders are fixed to the movable seat (4).

6. The centrifugal device for a pipe pile mold according to claim 1, characterized in that: The movable seat (4) comprises a seat body (41) and a mounting shaft (42); both ends of the mounting shaft (42) are mounted on the seat body (41) via cylindrical roller bearings; and the pressure wheel (5) is fixed on the mounting shaft (42).

7. The centrifugal device for a pipe pile mold according to claim 1, characterized in that: The first driving device (3) comprises an AC asynchronous motor.

8. The centrifugal device for a pipe pile mold according to claim 1, characterized in that: The plurality of rotating shafts (2) are divided into two groups, and the plurality of rotating shafts (2) in each group are coaxially arranged.

9. A centrifugal device for a pipe pile mold according to claim 8, characterized in that: A plurality of rotating shafts (2) in each group are connected in sequence via couplings.

10. A centrifugal device for a pipe pile mold according to claim 9, characterized in that: The two sets of rotating shafts (2) are linked by transmitting power through chain transmission.

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