Trial core-pulling equipment with automatic lifting function

Abstract

The utility model discloses trial core-pulling equipment with an automatic lifting function, which comprises a box body, a plurality of telescopic devices are arranged on the box body, the tops of the telescopic devices are connected to the bottom surface of a steel plate platform, and the top surface of the steel plate platform is used for being connected with a core-pulling machine base; rollers for moving the equipment are arranged at the bottom of the box body. The risk of misoperation of workers is avoided, through automatic operation of equipment, the construction efficiency and accuracy are greatly improved, meanwhile, the labor cost is saved, and the operation safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a heat exchanger maintenance device with automatic control lifting function. Background Technology

[0002] Currently, heat exchanger tube bundles are installed under some frame structures, making it inconvenient to use equipment such as cranes, and conventional core-pulling machines cannot be used. Summary of the Invention

[0003] To overcome the shortcomings of the aforementioned background technology, this utility model provides a core extraction device with automatic lifting function, which has low manufacturing cost and high construction efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A core-pulling device with automatic lifting function includes a housing with several telescopic devices on it. The top of the telescopic devices is connected to the bottom surface of a steel plate platform, and the top surface of the steel plate platform is used to connect to the core-pulling machine base. The bottom of the housing is provided with rollers for moving the equipment.

[0006] Preferably, it includes four telescopic devices, which are respectively located at the four top corners of the steel plate platform.

[0007] Preferably, the bottom of the housing is connected to the base of the core-pulling machine by bolts.

[0008] Preferably, the telescopic device includes a hollow telescopic column with a nut at the bottom and a lead screw that engages with the nut; the lead screw and the output shaft of the motor are provided with meshing gear structures.

[0009] Preferably, a brake and a clutch are also provided on the lead screw at a position between the gear structure and the nut.

[0010] Preferably, the control terminals of each motor are connected in series.

[0011] The beneficial effects of this utility model are: avoiding the risk of worker misoperation during heat exchanger construction, greatly improving construction efficiency and accuracy through automated equipment operation, saving labor costs, and improving operational safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure between the telescopic rod and the motor in an embodiment of this utility model;

[0014] Figure 3This is a schematic diagram of a single motor circuit in an embodiment of this utility model.

[0015] In the diagram: 1-bolt, 2-core-pulling machine base, 3-steel plate platform, 4-telescopic device, 5-box, 6-telescopic column, 7-nut, 8-lead screw, 9-brake, 10-clutch, 11-gear structure, 12-motor. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] A core-pulling device with automatic lifting function includes a housing 5, on which several telescopic devices 4 are provided. The top of the telescopic devices 4 is connected to the bottom surface of a steel plate platform 3. The top surface of the steel plate platform 3 is used to connect the core-pulling machine base 2 of the heat exchanger. The bottom of the housing 5 is provided with rollers for moving the equipment.

[0018] It includes four telescopic devices 4, which are respectively set at the four top corners near the steel plate platform 3.

[0019] The bottom of the housing 5 is connected to the core-pulling machine base 2 by bolts 1.

[0020] The telescopic device 4 includes a hollow telescopic column 6, with a nut 7 at the bottom of the telescopic column 6, and a lead screw 8 that cooperates with the nut 7; the lead screw 8 and the output shaft of the motor 12 are provided with a gear structure 11 that meshes with each other.

[0021] A brake 9 and a clutch 10 are also provided on the lead screw 8, located between the gear structure 11 and the nut 7.

[0022] The control terminals of each motor 12 are connected in series.

[0023] The electric telescopic device 4 drives the lead screw 8 through meshing gears, which in turn drives the nut 7 to move upward on the lead screw 8 through threaded movement, thus completing the push rod action on the telescopic column 6.

[0024] Automatic power-off braking allows the four motors 12 to be connected to the power supply simultaneously via series, enabling them to rise at the same time. The forward and reverse rotation of the motors 12 is controlled by the circuit to control the upward and downward direction of the push rod. A steel plate platform 3 is welded to the top of the four telescopic columns 6 to serve as a support for the core-pulling machine. The height reached is determined by observing the scale on the telescopic columns 6. Each motor 12 is equipped with a sensor switch device, which allows for individual fine-tuning of one of the top columns to achieve the desired angle. The motors 12 are installed in the base of the housing 5, and rollers are installed under the base of the housing 5 for easy angle adjustment.

[0025] The motor 12 and the telescopic column 6 are located on the same bearing. The rotation of the motor 12 drives the gear to rotate, which in turn drives the bearing to push the screw rod 8 to move. The height and smoothness of the extension and retraction are controlled by the brake 9 and the clutch 10.

[0026] Figure 3 This is a schematic diagram of a single motor with 12 circuits. QS is a circuit breaker, KM1 is a forward contactor, KM2 is a reverse contactor, FR is a thermal relay for overload and overheat protection, SB1 is a stop button, SB2 is a forward start button, and SB3 is a reverse start button. The four motors (12) are connected in parallel to the following control system, which can realize the micro-adjustment function of raising and lowering a single telescopic column (6).

[0027] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A core shooting apparatus having an automatic lifting function, characterized by: It comprises a box (5) with several telescopic devices (4) connected to the bottom of a steel platform (3) whose top is used to connect the base of a core pulling machine (2); the bottom of the box (5) is provided with rollers for moving the equipment.

2. A core shooting apparatus with automatic lifting function according to claim 1, characterized in that: It comprises four telescopic devices (4) respectively arranged near the four corners of the steel platform (3).

3. The core shooting apparatus with automatic lifting function according to claim 1, characterized in that: The bottom of the box (5) is connected to the base of the core pulling machine (2) through bolts (1).

4. The core shooting apparatus with automatic lifting function according to claim 1, characterized in that: The telescopic device (4) comprises a hollow telescopic column (6) with a nut (7) at its bottom and a screw rod (8) matched with the nut (7); the screw rod (8) and the output shaft of a motor (12) are provided with gear structures (11) engaged with each other.

5. A core shooting apparatus with automatic lifting function according to claim 4, characterized in that: The screw rod (8) is further provided with a brake (9) and a clutch (10) between the gear structure (11) and the nut (7).

6. A core shooting apparatus with automatic lifting function according to claim 4, characterized in that: The control ends of the motors (12) are connected in series.

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