Torque wrench special for plate heat exchanger
By designing a special torque wrench for plate heat exchangers, and adopting an electric torque gear structure and a stable rotation device, the problem of low efficiency in disassembling and installing fastening nuts for plate heat exchangers has been solved, achieving efficient and convenient nut operation.
Patent Information
- Application Number
- CN202522626957.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-12-11
AI Technical Summary
The disassembly and installation of fastening nuts for existing plate heat exchangers are inefficient, labor-intensive, and the existing tools are either poorly portable or expensive.
A torque wrench specifically designed for plate heat exchangers is presented. It adopts an electric torque gear structure with a driven gear and a fixed follower gear, and is equipped with a hollow sleeve and a positioning rod for stable rotation. It is also stabilized by limiting holes and limiting bolts.
It improves the efficiency of nut assembly and disassembly, reduces the physical exertion of operators, enhances portability and ease of operation, provides stable power output, and simplifies the operation procedure.
Smart Images
Figure CN223802492U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of overhaul tools, namely the special torque wrench of plate heat exchanger, is special in dismantling and installation of plate heat exchanger fastening nut. BACKGROUND
[0002] In prior art, since plate heat exchanger fastening bolt length mostly exceeds front end plate plane about one meter, leading to fastening nut's dismounting and installation can only use sleeve type heavy duty wrench, and efficiency is low, and labor intensity is big;If using hollow type heavy duty hydraulic or pneumatic torque wrench to operate, there are poor portability or high cost problems. CONTENT OF UTILITY MODEL
[0003] The utility model aims at above-mentioned insufficient and provides a special torque wrench of plate heat exchanger with reasonable structure and good use effect.
[0004] The technical solution of the utility model is: the special torque wrench of plate heat exchanger, including the casing, the driving gear of the casing has the driven gear of driving connection of deceleration.The hollow sleeve of screwing nut is in the middle of driven gear, and the fixed follower gear of more than three is engaged with the outer four quarters of driven gear;The casing edge has multiple interval limit holes, and the positioning rod is connected in the limit hole, and the limit bolt is through the front and rear of casing.
[0005] The above-mentioned scheme further includes:
[0006] The fixed follower gear is four equidistribution.
[0007] The hollow sleeve is provided with the variable-diameter core.
[0008] The limit hole is three left and right.
[0009] The utility model has the advantages that: 1, compared with traditional wrench, four fixed follower gears keep the driven gear positioning, make its rotation stable, the casing edge has multiple interval limit holes, the positioning rod is connected in the limit hole, make hollow sleeve of wrench connect with the nut to be dismounted when using, and positioning rod and workpiece abut, form two abutting points, make the whole wrench stable, the structure is reasonable, improve operability, portability, improve nut dismounting efficiency, good use effect, improve work efficiency. 2, the tool is electric torque gear structure, compared with hydraulic torque wrench and pneumatic torque wrench, the wrench adopts electric power as output power, has power clean, simplifies operation procedure, convenient operation, good portability, torque output stability and other characteristics.
[0010] The embodiments of the utility model will be described in further detail below with reference to the drawings. DRAWINGS
[0011] Figure 1Is the utility model three-dimensional structure diagram.
[0012] Figure 2 Is Figure 1 Remove the upper shell display gear transmission structure diagram.
[0013] Figure 3 Is the variable diameter core structure diagram.
[0014] Figure 4 Is the utility model use state three-dimensional structure diagram.
[0015] Figure 5 Is Figure 4 Left view three-dimensional structure diagram.
[0016] In the figure, the name of the parts is as follows: fixed driven gear 1, driven gear 2, driving gear 3, transmission shaft 4, positioning rod 5, hollow sleeve 6, shell 7, limit bolt 8, limit hole 9, variable diameter core 10, to be removed nut 11. Specific implementation
[0017] See Figures 1-5 , plate heat exchanger special torque wrench, including shell 7, shell 7 is divided into upper and lower shell two parts, between through multiple bolt connection. Shell 7 has the driving gear 3 of deceleration driving connection driven gear 2, the center of driving gear 3 is connected with transmission shaft 4, transmission shaft 4 extends out of shell 7, for external power. Driving gear 3 is located below driven gear 2 and is engaged with driven gear 2, which drives driven gear 2. Driven gear 2 has a hollow sleeve 6 for screwing the nut, which is located in the center of the driven gear 2 body and is exposed to the shell 7, which is used to be inserted into the nut 11 to be removed. Driven gear 2 has four fixed driven gears 1 around the periphery, which are symmetrically located at the four corners of driven gear 2 and are engaged with driven gear 2, which rotates with driven gear 2 and keeps driven gear 2 in position, and rotates stably. Shell 7 has three spaced limit holes 9 on each side of the edge, which can be connected with positioning rod 5, and the hollow sleeve 6 of the wrench is connected with the nut 11 to be removed, and the positioning rod 5 is connected with the workpiece, forming two contact points, so that the wrench remains stable. Shell 7 has limit bolt 8 through the front and rear, which is used for connecting the electric wrench counterforce arm, limiting and stabilizing, improving the torque output efficiency and reducing the physical consumption of the operator. Hollow sleeve 6 is provided with variable diameter core 10, which is used to insert hollow sleeve 6 to keep the wrench stable operation when the size of the nut 11 to be removed is different, which has strong adaptability and meets the on-site use. The tool is used for removing and installing plate heat exchanger or the same form of larger size nut.
[0018] When used, the hollow sleeve 6 is inserted into the nut 11 to be removed along the fastening bolt of the plate heat exchanger, and the positioning rod 5 is connected with the workpiece (seeFigure 4 , 5 ), the electric torque wrench is sleeved with the transmission shaft 4 (the electric torque wrench is a commercially available product), power is brought to the driven gear 2 by the driving gear 3, and the driven gear 2 is kept stable rotation by being positioned by the four fixed follow-up gears 1, the nut 11 to be removed is driven by the driven gear 2 to carry out quick dismounting operation, and a variable-diameter supplementary core 10 is additionally installed according to requirements.
[0019] The above description is only a specific implementation manner of the utility model, and various illustrations do not constitute limitation on the essential content of the utility model.
Claims
1. A special torque wrench for plate heat exchanger, comprising a housing (7), a driven gear (2) driven and connected by a reduction drive gear (3) in the housing (7), characterized in that The hollow sleeve (6) is arranged in the middle of the driven gear (2) and is used for screwing the nut, and the driven gear (2) is provided with more than three fixed driven gears (1) which are engaged with the driven gear (2) on the outer periphery of the driven gear (2); the shell (7) is provided with a plurality of interval limiting holes (9) on the edge, the limiting holes (9) are connected with the positioning rods (5), and the shell (7) is provided with the limiting bolts (8) which penetrate through the front and back.
2. A plate heat exchanger special torque wrench according to claim 1, characterized in that The fixed driven gear (1) is four.
3. A plate heat exchanger special torque wrench according to claim 1 or 2, characterized in that The hollow sleeve (6) is provided with the variable-diameter core (10).
4. The plate heat exchanger special torque wrench according to claim 3, characterized in that The limiting holes (9) are three on the left and right.