JPH03261509A - Curing chamber door opening and closing device - Google Patents

Abstract

PURPOSE:To lessen the burden of a worker and enhance safety by lifting up and down a door pushing up component installed on the side of a car for carrying a mold carriage and opening and closing the door of a curing chamber. CONSTITUTION:When a car 10 for carrying a mold carriage is stopped in front of a curing chamber 1, a door pushing up component 15 is close to and faces a door 2 to be positioned right below an engaging section 4. Then, a motor 20 for opening and closing the door is driven to transmit the rotation of an output shaft 21 of the motor to the door pushing up component 15, and a slider 14A rises along a support main body 12A and the door pushing up component 15 is brought into contact with the engaging section 4 from below to push up the engaging section and open the door 2. When the motor 20 for opening and closing the door is rotated in the opposite direction after carrying in the mold carriage, the door pushing up component 15 is lowered to lower the door 2 supported by said component to close an inlet 3 again. Therefore, it is not required for a worker to open and close the door 2 directly by hand, which is safe and reduces the burden of the worker.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a door opening/closing device for a curing chamber for curing concrete products cast in formwork.

[Conventional technology J] Conventionally, when forming concrete products, concrete placed in a formwork is transported to a curing chamber and heated at a predetermined temperature (approximately 80°C) for a certain period of time (1 week to 1 month). It is cured by drying. The formwork is integrally provided on a formwork truck, and is carried into the curing room together with this formwork truck. After pouring concrete, the formwork is loaded onto the car body together with the formwork truck, transported to the curing room, and unloaded into the curing room by a cargo handling device installed on the car body.

After curing, the formwork truck is pulled out of the curing room, loaded onto the car body, and transported to the demolding process. The entrance to the curing room is usually closed by a door that can be opened and closed, and the worker manually opens and closes the door each time the formwork cart is brought in and taken out.

[Problems to be solved by the invention] However, in such conventional curing room opening and closing doors, the operator has to open and close them by hand, which is a tedious task.Moreover, the door is heavy and has a large size. Requires operating power,
There was a problem in that it placed a heavy burden on the worker and was dangerous if the operator accidentally let go of the handle.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a relatively simple structure that can be opened and closed without bothering the operator. Another object of the present invention is to provide a curing room door opening/closing device designed to improve safety.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a door that can be raised and lowered to open and close the entrance of the curing chamber, a retaining portion provided on the surface of the door, and a door for opening and closing the entrance of the curing chamber. A door opening/closing motor is installed on a column on the formwork carrier body that runs on a rail laid across the front, and the motor drives the door opening/closing motor to move up and down along the column. The door pushing member engages with the retaining portion from below to push up the door, and lowers the door when the door is lowered.

[Operation] In the present invention, when the door push-up member is moved upward by driving of the drive motor, the door push-up member contacts the engaging portion from below and pushes it up.

Therefore, the door also rises, opening the daylight of the curing room.

After rising, when the door pushing member is lowered by switching the rotational direction of the motor, the door held by this member also lowers, closing the entrance to the curing chamber.

[Implementation IN] Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Fig. 1 is a side sectional view showing an embodiment of the curing room door opening/closing device according to the present invention, Fig. 2 is a front view of main parts of the formwork truck transport vehicle body, and Fig. 3 shows the door guide mechanism and slider. FIG. In these figures, ■ is a curing chamber, and 2 is a door that can be raised and lowered to open and close the entrance 3 of the curing chamber (■), and this door 2 has a pair of left and right engagement doors that are provided at the center of the front surface of the door so as to protrude forward. 4, and slide members 6 that slide along guides 5 provided on both sides of the entrance 3 are attached to the left and right edges. The guide 5 is constituted by a pipe having a circular cross-section, and is disposed on the side edge of the artificial body 3 via a guide attachment member 7. The slide member 6 has a 7-shaped cross section, and its inner surface is in sliding contact with the outer peripheral surface of the guide 5. A noise-muffling member 8 made of rubber or the like is attached to the slide member 6 to prevent the generation of noise during elevation, and one end thereof is in contact with the guide mounting member 7.

Reference numeral 10 denotes a conventionally known formwork trolley transport vehicle for carrying the formwork trolley 11 on which concrete has been cast into the curing chamber 1 through the entrance 3, and for pulling out the formwork trolley 11 after curing from the curing chamber 1. In the traverser, this formwork carriage transport body 1O is connected to the rail 9 laid across the front of the curing chamber 1.
It is configured to run on its own. Further, at the front end of the formwork trolley transport vehicle body 10, a pair of left and right pillar bodies 12A,
12B, and a beam member 12C extending between the upper ends of the pair of support main bodies 12A and 12B.
2 are erected. The pair of support main bodies 12A, 12
A pair of left and right sliders 14 are provided on the mutually opposing inner surfaces of B.
A and 14B are arranged so as to be able to move up and down, respectively. These sliders 14A, 14B are connected to each other by a door push-up member 15 for opening and closing the door 2, and roll along guide grooves 16 recessed in the inner surface of each support main body 12A, 12B. A pair of upper and lower rollers]7 are provided. These rotors 17 are rotatably arranged on a support shaft 18.

Furthermore, a shaft 19 is horizontally suspended between the upper ends of the pair of support main bodies 12A and 12B, and this shaft 19 has an output shaft 2 of a door opening/closing motor 20 installed on the beam member 12C.
(2) A driven sprocket 24 to which rotation of a driving sprocket 22 provided at the shaft 1 is transmitted via a chain 23;
A pair of left and right transmission sprockets 25 (25A, 25B) are attached to transmit the rotation of 9 to the sliders 14A, 14B. On the other hand, sprockets 26 (26A, 26B) are rotatably disposed at the lower ends of each of the pillar bodies 12A, 1.2B in correspondence with the transmission sprockets 25A, 26A, and these sprockets 25A, 25B, 2
An endless chain 27 (27
A, 27B) are stretched. Each end of the door pushing member 15 is connected to each of the endless chains 27A, 27B so as to be horizontal.

The reason why the door opening/closing motor 20 is installed on the support column 12 is to prevent it from interfering with the loading and unloading of the formwork cart 11, and to that extent, if another suitable location can be secured, it may be placed in the above position. It is not limited to.

Next, the operation of the curing chamber door r#4 closing/lid device having such a configuration will be explained. An entrance 3 of the curing chamber 1 is normally closed by a door 2. When the formwork cart transport body 10 stops in front of the curing room 1 to carry the formwork cart 11 into the curing chamber 1, the door push-up member 15 closely faces and engages with the door 2, as shown in FIG. The 0th order located directly below the section 4 drives the door opening/closing motor 20 and rotates its output shaft 21 through the drive sprocket 22 - chain 23 - driven sprocket 2
4-Transmission sprocket 25.26 and endless chain 2
7 to the door pushing member 15, the slider 1
4 rises along the support main bodies 12A, 12B, and the door pushing member 15 abuts on the retaining part 4 from below and pushes it up. Therefore, the door 2 opens as the door pushing member 15 rises, and when it is fully opened, it stops at the uppermost position by stopping the door opening/closing motor 20, allowing the formwork cart 1■ to be carried into the curing chamber 1. Make it.

After carrying in the formwork truck 11, when the door opening/closing motor 20 is rotated in the opposite direction to that described above, the door pushing member 15 descends, so the door 2 held by it also descends, and the entrance 3 is opened again. close.

Therefore, there is no need for the operator to open or close the door 2 directly by hand, which is safe and reduces the burden on the operator.

[Effects of the Invention] As explained above, in the curing room door opening/closing device according to the present invention, the door pushing member provided on the side of the vehicle body for transporting the formwork trolley is raised and lowered by the door opening/closing motor, and the door pushing up member is used for curing. Since the structure is configured to open and close the room door, the operator only needs to confirm that the door push-up member is positioned below the engaging part provided on the door and then drive the door opening/closing motor. The burden on the operator is significantly reduced, and the safety of opening/closing operations can be improved.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing an embodiment of the curing room door opening/closing device according to the present invention, Fig. 2 is a front view of main parts of the formwork truck transport vehicle body, and Fig. 3 shows the door guide mechanism and slider. FIG. 1...Curing room, 2...Door, 3...Entrance, 4...
Engagement portion, 9... Rail, 10... Formwork trolley transport body, 11... Formwork trolley, 12... Support column, 1/i A, 14B... Slider, 15... Door push-up member, 20... Door opening/closing motor, 22... Drive sprocket, 23... Chain, 24... Driven sprocket, 26A, 26B... Sprocket, 2
7A, 27B...Endless chain. Figure 3

Claims (1)

[Claims] A door that can be raised and lowered to open and close the entrance of the curing chamber, an engaging portion provided on the surface of the door, and a formwork truck transport vehicle body that runs on a rail laid across the front of the curing chamber. A door opening/closing motor is installed on a pillar of the door, and when the motor is driven, the door is moved up and down along the pillar, and when it moves up, it abuts and engages the engaging part from below to push up the door, and when it goes down, it moves up and down the door. A curing room door opening/closing device comprising: a door pushing member that lowers the door.