Die table lifting mechanism

Abstract

The utility model is suitable for the technical field of tunnel concrete duct piece prefabrication, and provides a mold table lifting mechanism which comprises a frame, an opening and closing motor, a transmission shaft, a propelling motor, a friction wheel, a position sensing switch, a clamping guide wheel, a plurality of pairs of clamping arms, an up-down walking guide wheel, a lifting pin and a plurality of pairs of pull rods. The opening and closing motor is used for driving opening and closing actions of the holding and clamping arms; the pull rod is matched with the transmission shaft to transmit power of the opening and closing motor to the clamping arms; the propulsion motor is used for driving the friction wheel to rotate and pushing the mold table into the curing kiln; the holding and clamping arms are used for clamping the mold table; the up-down walking guide wheels are guided in the vertical guide rails; the lifting pin suspends the whole mechanism. The lifting device can be freely opened and closed and can clamp a mold table, the mold table is lifted to a two-layer or higher-layer curing kiln from a ground guide rail, and the three-dimensional layout of the curing kiln is realized, so that the space utilization rate of a factory is remarkably improved, the occupied area is reduced, the number of the curing kilns is increased, the production efficiency is improved, and the energy consumption and the resource consumption are effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel concrete segment prefabrication, in particular to a formwork platform lifting mechanism. Background Art

[0002] The core of prefabricated buildings lies in the factory prefabrication of concrete components. Given that concrete components in the construction industry are generally large in size, the factory floor space required is correspondingly large. According to the production process requirements, the components cast and formed on the formwork need to be sent to the curing kiln for a period of steam curing to ensure that their strength and hardness meet the standards. However, a major challenge facing the existing technology is that the traditional flat curing model makes the factory space utilization inefficient, and it is difficult to flexibly add more curing kilns. This not only restricts the improvement of production efficiency, but also exacerbates the problems of energy consumption and resource waste. For this reason, a formwork lifting mechanism is proposed. Utility Model Content

[0003] The purpose of the present invention is to provide a die table lifting mechanism, aiming to solve the problems raised in the above background technology.

[0004] The embodiment of the utility model is implemented as follows: a die table lifting mechanism includes a frame, an opening and closing motor, a transmission shaft, a propulsion motor, a friction wheel, a position sensing switch, a clamping guide wheel, a plurality of pairs of clamping arms, an up and down travel guide wheel, a suspension pin and a plurality of pairs of pull rods;

[0005] The opening and closing motor is fixedly mounted on the frame and is used to drive the opening and closing of the clamping arm;

[0006] The transmission shaft is used to transmit the power of the opening and closing motor to the clamping arm. A bidirectional cam is fixedly connected to the transmission shaft. Both ends of the bidirectional cam are connected to one end of a pull rod through a pin shaft, and the other end of the pull rod is rotatably connected to the clamping arm. The transmission shaft drives the bidirectional cam to rotate forward or reverse to achieve the centering and contraction or outward extension of the pull rods at both ends.

[0007] The propulsion motor is fixedly mounted on a clamping arm, and the output shaft of the propulsion motor is connected to the friction wheel for driving the friction wheel to rotate;

[0008] The friction wheel is in contact with the die table and is used to push the die table into the curing kiln through friction;

[0009] The position sensing switch is fixedly mounted on the frame and is used to detect the opening and closing position of the clamping arm and control the start and stop of the opening and closing motor;

[0010] The clamping guide wheel is rotatably mounted on the clamping arm and is used to guide the mold platform into the curing kiln;

[0011] Each pair of clamping arms is rotatably mounted on both sides of the frame, and the clamping arms are used to clamp the mold platform;

[0012] The upper and lower travel guide wheels are rotatably mounted on the frame and guided in the vertical guide rails;

[0013] The suspension pin is installed on the top of the frame and is connected to the traction motor through a steel wire rope to suspend the entire mechanism.

[0014] Furthermore, a bearing seat is fixedly mounted on the frame, and the bearing seat is used to support the transmission shaft.

[0015] Furthermore, a cylinder safety locking device is fixedly mounted on the frame, and the cylinder safety locking device is used to position and lock the mechanism.

[0016] Furthermore, each of the clamping arms is equipped with a pair of clamping guide wheels.

[0017] Furthermore, the number of pairs of the clamping arms and the pull rods is the same.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The mold pallet lifting mechanism can open and close freely and can clamp the mold pallet, lifting the mold pallet from the ground guide rail to the curing kiln on the second floor or higher, realizing a three-dimensional layout of the curing kiln, thereby significantly improving the factory space utilization rate, reducing the floor space, increasing the number of curing kilns to improve production efficiency, and effectively reducing energy consumption and resource consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the mold platform lifting mechanism.

[0021] In the figure: opening and closing motor 10, transmission shaft 20, seat bearing 30, cylinder safety locking device 40, propulsion motor 50, friction wheel 60, position sensing switch 70, clamping guide wheel 80, clamping arm 90, up and down walking guide wheel 100, pin 110, pull rod 120. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0024] like Figure 1The figure shows a die table lifting mechanism according to one embodiment of the present invention, comprising a frame, an opening and closing motor 10, a drive shaft 20, a seat bearing 30, a propulsion motor 50, a friction wheel 60, a position sensing switch 70, a clamping guide wheel 80, several pairs of clamping arms 90, an up and down travel guide wheel 100, a suspension pin 110, and several pairs of tie rods 120. Here, four pairs of clamping arms 90 and tie rods 120 are used.

[0025] The frame serves as the basic supporting structure of the entire lifting mechanism, carrying all other components and ensuring the stability and strength of the overall structure.

[0026] The opening and closing motor 10 is fixedly mounted on the frame and is used to drive the opening and closing of the clamping arm 90 to clamp and release the mold platform.

[0027] The transmission shaft 20 is mounted on the frame via a seated bearing 30. The transmission shaft 20 is used to transmit power from the opening and closing motor 10 to the clamping arm 90, thereby achieving the opening and closing movement of the clamping arm 90. Four bidirectional cams are fixedly connected to the transmission shaft 20. Each of the two-way cams is connected to one end of a pull rod 120 via a pin at both ends. The other end of the pull rod 120 is rotatably connected to the clamping arm 90. The transmission shaft 20 drives the two-way cams to rotate forward or reverse to achieve the centering, contraction, or outward extension of the pull rods 120 at both ends, thereby achieving power transmission, thereby enabling the pair of clamping arms 90 to achieve clamping and release actions.

[0028] The seat bearing 30 is fixedly mounted on the frame to support the transmission shaft 20 and reduce friction and wear.

[0029] The propulsion motor 50 is fixedly mounted on a clamping arm 90 , and the output shaft of the propulsion motor 50 is connected to the friction wheel 60 for driving the friction wheel 60 to rotate.

[0030] The friction wheel 60 is in contact with the mold platform and is used to push the mold platform into the curing kiln through friction.

[0031] The position sensing switch 70 is fixedly mounted on the frame and is used to detect the opening and closing position of the clamping arm 90 and control the start and stop of the opening and closing motor 10 .

[0032] The clamping guide wheels 80 are rotatably mounted on the clamping arms 90 to guide the die plate into the curing kiln and ensure that the die plate remains stable during advancement. Each clamping arm 90 is provided with a pair of clamping guide wheels 80 .

[0033] Each pair of the clamping arms 90 is rotatably mounted on both sides of the frame. The clamping arms 90 are used to clamp the die table, and the clamping and releasing actions are achieved by the drive of the opening and closing motor 10.

[0034] The up and down walking guide wheels 100 are rotatably mounted on the frame and guided in the vertical guide rails to ensure that the die table lifting mechanism remains stable during the up and down lifting process.

[0035] The suspension pin 110 is installed on the top of the frame and is connected to the traction motor through a steel wire rope to suspend the entire mechanism.

[0036] In an embodiment of the present invention, the formwork platform lifting mechanism is suspended on the suspension pin 110 by a traction motor on the large frame through a steel wire rope. Through the forward and reverse rotation of the traction motor, the upper and lower walking guide wheels 100 are guided in the vertical guide rail to achieve up and down lifting. The formwork platform lifting mechanism is located vertically above the horizontal production line and directly opposite the curing kiln mouth. When the completed formwork platform runs to the designated position along the horizontal assembly line, the formwork platform lifting mechanism slowly falls with the rotation of the traction motor (at this time the clamping arm 90 is in the open state). After falling to the designated position, the opening and closing motor 10 rotates, driving the clamping arm 90 to slowly close, and the clamping guide wheel 80 on the clamping arm 90 is used to clamp the lower part of the formwork platform. After clamping (after the clamping arm 90 is closed to a certain position), the position sensing switch 70 is triggered, and the opening and closing motor 10 stops rotating and enters the braking state. Next, the traction motor rotates in the reverse direction, driving the mold platform lifting mechanism and the mold platform to rise together. When it reaches the designated height (directly opposite the second or third-tier curing kiln entrance), the propulsion motor 50 rotates, driving the mold platform along the clamping guide wheel 80 via the friction wheel 60 and slowly entering the curing kiln. Once the mold platform is fully inside the kiln, the opening and closing motor 10 rotates in the reverse direction, causing the clamping arm 90 to slowly open to a fixed angle. After triggering the position sensor 70, the opening and closing motor 10 stops. Finally, the traction motor rotates, and the mold platform lifting mechanism slowly descends, preparing for the next work cycle.

[0037] like Figure 1 As shown in FIG. 1 , as a preferred embodiment of the present invention, a cylinder safety locking device 40 is fixedly mounted on the frame, and the cylinder safety locking device 40 is used to position and lock the mechanism.

[0038] In this embodiment of the present invention, the cylinder safety locking device 40 comprises a cylinder and a pin. A mounting bracket is provided on the main frame. When the entire mechanism is raised or lowered to an appropriate height, and before the clamping arms 90 are opened or closed, the cylinder safety locking device 40, through the cylinder's propulsion, pushes the pin out, which then snaps into the mounting bracket provided on the main frame, securing the mechanism in place and preventing significant shaking when the clamping arms 90 are opened or closed.

[0039] The working principle of this utility model is:

[0040] When the completed formwork platform moves along the horizontal assembly line to the designated position, the formwork platform lifting mechanism slowly descends as the traction motor rotates (the clamping arm 90 is now open). Once it reaches the designated position, the opening and closing motor 10 rotates, driving the clamping arm 90 to slowly close, clamping the lower portion of the formwork platform using the clamping guide rollers 80 on the clamping arm 90. Once the clamping arm 90 is closed to a certain position, the position sensor switch 70 is triggered, causing the opening and closing motor 10 to stop and enter the brake mode. Next, the traction motor rotates in the reverse direction, raising the formwork platform lifting mechanism and the formwork platform together. When the formwork platform reaches the designated height (aligned with the second or third-level curing kiln entrance), the propulsion motor 50 rotates, driving the formwork platform along the clamping guide rollers 80 via the friction wheel 60 and slowly entering the curing kiln. Once the formwork platform is fully inside the kiln, the opening and closing motor 10 rotates in the reverse direction, causing the clamping arm 90 to slowly open to a predetermined angle. After the position sensor switch 70 is triggered, the opening and closing motor 10 stops. Finally, the traction motor rotates and the die table lifting mechanism slowly falls down, preparing for the next working cycle.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A die table lifting mechanism, comprising a frame, characterized in that: It also includes an opening and closing motor, a transmission shaft, a propulsion motor, a friction wheel, a position sensing switch, a clamping guide wheel, several pairs of clamping arms, an up and down travel guide wheel, a suspension pin and several pairs of pull rods; The opening and closing motor is fixedly mounted on the frame and is used to drive the opening and closing of the clamping arm; The transmission shaft is used to transmit the power of the opening and closing motor to the clamping arm. A bidirectional cam is fixedly connected to the transmission shaft. Both ends of the bidirectional cam are connected to one end of a pull rod through a pin shaft, and the other end of the pull rod is rotatably connected to the clamping arm. The transmission shaft drives the bidirectional cam to rotate forward or reverse to achieve the centering and contraction or outward extension of the pull rods at both ends. The propulsion motor is fixedly mounted on a clamping arm, and the output shaft of the propulsion motor is connected to the friction wheel for driving the friction wheel to rotate; The friction wheel is in contact with the die table and is used to push the die table into the curing kiln through friction; The position sensing switch is fixedly mounted on the frame and is used to detect the opening and closing position of the clamping arm and control the start and stop of the opening and closing motor; The clamping guide wheel is rotatably mounted on the clamping arm and is used to guide the mold platform into the curing kiln; Each pair of clamping arms is rotatably mounted on both sides of the frame, and the clamping arms are used to clamp the mold platform; The upper and lower travel guide wheels are rotatably mounted on the frame and guided in the vertical guide rails; The suspension pin is installed on the top of the frame and is connected to the traction motor through a steel wire rope to suspend the entire mechanism.

2. The die table lifting mechanism according to claim 1, characterized in that: A bearing seat is fixedly mounted on the frame and is used to support the transmission shaft.

3. The die table lifting mechanism according to claim 1, characterized in that: A cylinder safety locking device is fixedly mounted on the frame, and the cylinder safety locking device is used to position and lock the mechanism.

4. The die table lifting mechanism according to claim 1, characterized in that: A pair of clamping guide wheels are installed on each of the clamping arms.

5. The die table lifting mechanism according to claim 1, characterized in that: The number of pairs of the clamping arms and the pull rods is the same.

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