Modular mechanical auxiliary tool of refrigerating machine room

By designing modular mechanical auxiliary tooling, the portability and installation challenges of Z-tube installation and pressure testing in refrigeration rooms were solved, enabling portable equipment and efficient installation of Z-tubes in low-entry environments, ensuring installation accuracy and safety.

CN224258173UActive Publication Date: 2026-05-19POWERCHINA RAILWAY CONSTR +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
POWERCHINA RAILWAY CONSTR
Filing Date
2025-05-15
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In the refrigeration room, during the installation and pressure testing of Z-shaped pipes, existing equipment is difficult to access in the high basement and is inconvenient to carry and install.

Method used

A modular mechanical auxiliary tooling was designed, comprising an equipment base, a lifting beam, a support mechanism, and a hoisting mechanism. Through a combination of a worm gear driven lead screw and a motor driven wire rope, the equipment height can be adjusted and the Z-shaped tube can be precisely positioned.

Benefits of technology

This technology enables the equipment to be portable in low-entry environments and allows for efficient installation using Z-shaped tubes, ensuring installation accuracy and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a modularized mechanical auxiliary tool of a refrigerating machine room, which relates to the technical field of refrigerating machine room installation, and comprises an equipment base, movable wheels are rotatably arranged at the bottom of the equipment base, a cable hole is arranged on the upper surface of the equipment base, a lifting cross beam is arranged above the equipment base, and a supporting mechanism is arranged between the lifting cross beam and the equipment base. The supporting mechanism comprises a positioning sleeve fixedly installed on the equipment base and a telescopic rod installed in the positioning sleeve in a sliding mode, a driving lead screw is rotatably installed in the positioning sleeve, a lead screw nut is fixedly installed on the telescopic rod and installed on the driving lead screw in a threaded mode, and a hoisting mechanism is arranged between the equipment base and the lifting cross beam. According to the modularized mechanical auxiliary tool of the refrigerating machine room, through cooperative use of the hoisting mechanism and the supporting mechanism, a Z-shaped pipe can be hoisted to a main conveying pipe, installation operation is convenient to carry out, the height of the whole device can be adjusted, and the whole device can conveniently penetrate through certain low-height inlets.
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Description

Technical Field

[0001] This utility model relates to the field of refrigeration room installation technology, specifically a modular mechanical auxiliary tooling for refrigeration rooms. Background Technology

[0002] In the current installation of chiller units in chiller rooms, the installation of Z-shaped pipes is often encountered. Z-shaped pipes are mainly used to connect water pumps and main delivery pipes. Since the main delivery pipes are generally suspended from the ceiling of the chiller room, while the water pumps and chillers are fixed on the floor, Z-shaped pipes are needed to connect the two. However, since chiller rooms are mostly basements with high ceilings, typically 3 to 4 meters, it is often inconvenient for construction workers to install Z-shaped pipes.

[0003] After installation, a crucial testing step is required: applying pressure to the inside of the pipes to diagnose any leaks at the Z-connectors. This process is critical for ensuring the safe operation of the piping system, as leaks can not only waste resources but also pose safety hazards. Pressure testing allows for the timely detection and repair of potential problems, thus guaranteeing the stability and reliability of the entire system.

[0004] In the prior art, the authorized announcement number CN218708830U discloses an auxiliary installation device for refrigeration room pipes, including: a frame, a lifting mechanism on the frame, and a pipe fixing mechanism on the lifting mechanism for fixing the pipes, the pipes being able to move up and down with the lifting mechanism.

[0005] The aforementioned device can be used to lift the Z-shaped pipe interface to the main delivery pipe, facilitating installation. To lift the Z-shaped pipe interface to the main delivery pipe, the entire device should be at least 4 meters tall. Although the height of a refrigeration room is typically 3-4 meters, the entrance height of most rooms is generally around 2 meters, making it difficult to move the auxiliary device into the room. Furthermore, the overall length of the auxiliary device is also inconvenient for carrying. Therefore, a modular mechanical auxiliary tooling for refrigeration rooms is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a modular mechanical auxiliary tooling for refrigeration rooms to solve the problems in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a modular mechanical auxiliary tooling for a refrigeration room, including an equipment base, with movable wheels rotatably mounted on the bottom of the equipment base, cable holes opened on the upper surface of the equipment base, a lifting beam provided above the equipment base, a support mechanism provided between the lifting beam and the equipment base, the support mechanism including a positioning sleeve fixedly mounted on the equipment base and a telescopic rod slidably mounted in the positioning sleeve, a drive screw rotatably mounted in the positioning sleeve, a screw nut fixedly mounted on the telescopic rod, and the screw nut threaded onto the drive screw, and a hoisting mechanism provided between the equipment base and the lifting beam.

[0008] Preferably, the support mechanism further includes a worm gear fixedly mounted on the drive screw, a worm is rotatably mounted on one side of the worm gear and the worm gear meshes with the worm, and a crank is fixedly mounted on one end of the worm.

[0009] Preferably, a limiting groove is provided inside the positioning sleeve, and the telescopic rod is slidably installed inside the positioning sleeve through the limiting groove.

[0010] Preferably, the equipment base is provided with a retainer, the worm gear is rotatably mounted in the equipment base through the retainer, and the upper end of the telescopic rod is fixed on the lifting beam.

[0011] Preferably, the hoisting mechanism includes a fixed pulley fixedly installed at the bottom of the lifting beam and a linkage shaft rotatably installed in the equipment base. Both ends of the linkage shaft are fixedly installed with winches. A brake disc and a large gear are fixedly installed on the linkage shaft. A motor is fixedly installed on one side of the linkage shaft. A small gear is fixedly installed at the output end of the motor, and the small gear meshes with the large gear. A caliper is provided below the brake disc. A wire rope is provided between the winch and the fixed pulley. A hoisting sleeve is fixedly installed at the end of the wire rope.

[0012] Preferably, the linkage shaft is provided with a bearing, and the linkage shaft is rotatably mounted in the equipment base through the bearing.

[0013] Preferably, the winch is rotatably mounted inside the equipment base via a linkage shaft, and the wire rope extends out of the equipment base through a cable hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this application, a rotating handle drives a worm gear to rotate. The rotation of the worm gear is then transmitted to the worm wheel, causing it to rotate. The rotation of the worm wheel ultimately drives the rotation of the lead screw. The rotation of the lead screw causes the lead screw nut to move along the lead screw axis, achieving vertical movement. When the lead screw nut moves downward, the telescopic rod retracts, thereby reducing the overall height of the equipment, facilitating carrying and passage through some low-height entrances. Conversely, when the lead screw nut moves upward, the telescopic rod extends, pushing the lifting beam to a higher position.

[0016] 2. In this application, after the lifting beam is raised to the highest position, the hoisting clamp can be fixed onto the Z-shaped tube. Subsequently, the start of the motor will cause the pinion to rotate, which in turn drives the rotation of the large gear and the winches at both ends of the linkage shaft. This process realizes the winding of the wire rope, causing the Z-shaped tube to move towards the main conveying pipe at the higher position. When the interface of the Z-shaped tube is precisely aligned with the main conveying pipe, the brake disc is fixed by clamps to ensure that the Z-shaped tube is stable in the appropriate position for subsequent installation operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the support mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the hoisting mechanism of this utility model.

[0021] The following are the labeling elements in the diagram: 1. Equipment base; 2. Casters; 3. Cable hole; 4. Lifting beam; 5. Support mechanism; 501. Telescopic rod; 502. Drive screw; 503. Positioning sleeve; 504. Screw nut; 505. Worm gear; 506. Handle; 507. Worm; 6. Lifting mechanism; 601. Lifting clamp; 602. Fixed pulley; 603. Wire rope; 604. Brake disc; 605. Motor; 606. Pinion; 607. Gear; 608. Caliper; 609. Linkage shaft; 610. Winch. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a modular mechanical auxiliary tooling for a refrigeration room, including an equipment base 1, with movable wheels 2 rotatably mounted on the bottom of the equipment base 1, cable holes 3 opened on the upper surface of the equipment base 1, a lifting beam 4 above the equipment base 1, a support mechanism 5 between the lifting beam 4 and the equipment base 1, and a hoisting mechanism 6 between the equipment base 1 and the lifting beam 4. Through the cooperation of the hoisting mechanism 6 and the support mechanism 5, the Z-shaped pipe can be hoisted to the main delivery pipe, which is convenient for installation. Moreover, the height of the entire device can be adjusted to facilitate its passage through some low-height entrances.

[0024] like Figure 2 and Figure 3 As shown, the support mechanism 5 includes a positioning sleeve 503 fixedly installed on the equipment base 1 and a telescopic rod 501 slidably installed inside the positioning sleeve 503. A drive screw 502 is rotatably installed inside the positioning sleeve 503. A screw nut 504 is fixedly installed on the telescopic rod 501 and threaded onto the drive screw 502. The support mechanism 5 also includes a worm gear 505 fixedly installed on the drive screw 502. A worm 507 is rotatably installed on one side of the worm gear 505 and meshes with the worm gear 507. A crank handle 506 is fixedly installed at one end of the worm gear 507. A limiting groove is provided inside the positioning sleeve 503, and the telescopic rod 501 is slidably installed inside the positioning sleeve 503 through the limiting groove.

[0025] Specifically, the rotation of the crank handle 506 is transmitted to the worm gear 507, causing it to rotate. The rotation of the worm gear 507 further drives the meshing worm wheel 505 to rotate. The rotation of the worm wheel 505 is transmitted to the drive screw 502, causing it to rotate as well. As the drive screw 502 rotates, the connected screw nut 504 moves up and down along the screw thread. When the screw nut 504 moves downwards along the screw, it applies force to the telescopic rod 501, causing it to retract. This retraction lowers the overall height of the device, making it easier for the user to carry. Conversely, when the screw nut 504 moves upwards along the screw, it pushes the telescopic rod 501 outwards, allowing the lifting beam 4 to move to a higher position.

[0026] like Figure 2 and Figure 4As shown, the hoisting mechanism 6 includes a fixed pulley 602 fixedly installed at the bottom of the lifting beam 4 and a linkage shaft 609 rotatably installed in the equipment base 1. Both ends of the linkage shaft 609 are fixedly installed with winches 610. A brake disc 604 and a large gear 607 are fixedly installed on the linkage shaft 609. A motor 605 is fixedly installed on one side of the linkage shaft 609. A small gear 606 is fixedly installed at the output end of the motor 605, and the small gear 606 meshes with the large gear 607. A caliper 608 is provided below the brake disc 604. A wire rope 603 is provided between the winch 610 and the fixed pulley 602. A hoisting sleeve 601 is fixedly installed at the end of the wire rope 603. A bearing is provided on the linkage shaft 609, and the linkage shaft 609 is rotatably installed in the equipment base 1 through the bearing.

[0027] Specifically, when the lifting beam 4 is moved to a higher position, the lifting clamp 601 can be securely fixed to the Z-shaped tube. Then, the motor 605 can be started. Once the motor 605 starts working, it will drive the pinion 606 to rotate. The rotation of the pinion 606 will be transmitted to the large gear 607, causing it to rotate as well. The rotation of the large gear 607 will further drive the winches 610 at both ends of the linkage shaft 609 to rotate, thereby realizing the winding action of the wire rope 603. As the wire rope 603 is wound, the Z-shaped tube will gradually move closer to the main conveying pipe at a higher position. When the interface of the Z-shaped tube is precisely aligned with the main conveying pipe, the brake disc 604 can be fixed by operating the clamp 608, ensuring that the Z-shaped tube is stably held in the proper position. This operation greatly facilitates subsequent installation work and ensures the smooth progress of the entire process.

[0028] Working principle: When in use, first turn the crank handle 506. Turning the crank handle 506 will drive the worm gear 507 to rotate. After the worm gear 507 rotates, it will drive the worm wheel 505 to rotate. After the worm wheel 505 rotates, it will drive the drive screw 502 to rotate. After the drive screw 502 rotates, it will drive the screw nut 504 to move up and down along the screw. When the screw nut 504 moves down along the screw, it will drive the telescopic rod 501 to retract, thereby reducing the height of the entire device for easy carrying by the user. When the screw nut 504 moves up along the screw, it will drive the telescopic rod 501 to extend, causing the lifting beam 4 to move to a higher position. After the lifting beam 4 is moved to a high position, the hoisting clamp 601 can be fixed to the Z-shaped tube. Then, the motor 605 can be started. After the motor 605 is started, it will drive the pinion 606 to rotate. After the pinion 606 rotates, it will drive the large gear 607 to rotate. After the large gear 607 rotates, it will drive the winches 610 at both ends of the linkage shaft 609 to rotate, thereby winding the wire rope 603 and moving the Z-shaped tube to the main conveying pipe at a higher position. When the interface of the Z-shaped tube is aligned with the main conveying pipe, the brake disc 604 can be fixed by the clamp 608 to keep the Z-shaped tube in a suitable position for easy installation.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A modular mechanical auxiliary tooling for a refrigeration room, comprising an equipment base (1), wherein the bottom of the equipment base (1) is rotatably mounted with casters (2), and the upper surface of the equipment base (1) is provided with cable holes (3), characterized in that: A lifting beam (4) is provided above the equipment base (1). A support mechanism (5) is provided between the lifting beam (4) and the equipment base (1). The support mechanism (5) includes a positioning sleeve (503) fixedly installed on the equipment base (1) and a telescopic rod (501) slidably installed in the positioning sleeve (503). A drive screw (502) is rotatably installed in the positioning sleeve (503). A screw nut (504) is fixedly installed on the telescopic rod (501), and the screw nut (504) is threaded onto the drive screw (502). A hoisting mechanism (6) is provided between the equipment base (1) and the lifting beam (4).

2. The modular mechanical auxiliary tooling for a refrigeration room according to claim 1, characterized in that: The support mechanism (5) further includes a worm wheel (505) fixedly installed on the drive screw (502), a worm (507) is rotatably installed on one side of the worm wheel (505), and the worm wheel (505) and the worm (507) mesh together, and a crank (506) is fixedly installed at one end of the worm (507).

3. The modular mechanical auxiliary tooling for a refrigeration room according to claim 2, characterized in that: The positioning sleeve (503) has a limiting groove, and the telescopic rod (501) is slidably installed in the positioning sleeve (503) through the limiting groove.

4. The modular mechanical auxiliary tooling for a refrigeration room according to claim 3, characterized in that: The equipment base (1) is provided with a retainer, the worm gear (507) is rotatably installed in the equipment base (1) through the retainer, and the upper end of the telescopic rod (501) is fixed on the lifting beam (4).

5. The modular mechanical auxiliary tooling for a refrigeration room according to claim 4, characterized in that: The hoisting mechanism (6) includes a fixed pulley (602) fixedly installed at the bottom of the lifting beam (4) and a linkage shaft (609) rotatably installed in the equipment base (1). Both ends of the linkage shaft (609) are fixedly installed with winches (610). A brake disc (604) and a large gear (607) are fixedly installed on the linkage shaft (609). A motor (605) is fixedly installed on one side of the linkage shaft (609). A small gear (606) is fixedly installed at the output end of the motor (605), and the small gear (606) meshes with the large gear (607). A caliper (608) is provided below the brake disc (604). A wire rope (603) is provided between the winch (610) and the fixed pulley (602). A hoisting sleeve (601) is fixedly installed at the end of the wire rope (603).

6. The modular mechanical auxiliary tooling for a refrigeration room according to claim 5, characterized in that: The linkage shaft (609) is provided with a bearing, and the linkage shaft (609) is rotatably mounted in the equipment base (1) through the bearing.

7. A modular mechanical auxiliary tooling for a refrigeration room according to claim 6, characterized in that: The winch (610) is rotatably mounted inside the equipment base (1) via a linkage shaft (609), and the wire rope (603) extends out of the equipment base (1) through the cable hole (3).