Explosion-proof three-stage transmission gear box for electric anchor and mooring equipment

Abstract

The utility model relates to the related technical field of electric anchor and mooring equipment, and discloses an explosion-proof three-stage transmission gear box for the electric anchor and mooring equipment, which comprises a gear box body, and a high-speed large gear shaft, a low-speed small gear shaft and an output shaft are arranged in the gear box body; the high-speed large gear shaft, the low-speed small gear shaft and the output shaft are in transmission connection through a gear combination; the gear box body is provided with an explosion-proof sensor for carrying out stress detection on the high-speed large gear shaft; the explosion-proof sensor comprises an elastic body, the elastic body is installed on the gear box body, the shaft end of the high-speed large gear shaft is connected with the elastic body through a high-speed end bearing, and an end cover is arranged at the outer end of the elastic body. The reduction ratio of the gear box can be adjusted in a large range through three-stage transmission, and the gear box is adaptive to anchor and mooring machines with different loads; according to the explosion-proof flange sensor, the elastic body and the end cover are integrated, explosion suppression can be better achieved, the force measuring direction of the explosion-proof flange sensor is consistent with the stress direction of a gear box bearing, and the explosion-proof flange sensor can be directly installed on a gear box and is convenient to disassemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field related to electric anchor winches, and in particular to a flameproof three-stage transmission gear box for electric anchor winches. Background Art

[0002] Currently, ocean-going tankers and liquefied gas carriers require explosion-proof systems in specific areas of the upper deck, necessitating the use of hydraulic anchor winches. With the continuous innovation and development of electrical equipment technology, electric anchor winches are increasingly demonstrating their advantages in the field of deck machinery. Compared to traditional hydraulic anchor winches, electric anchor winches offer higher efficiency, lower maintenance costs, and wider adaptability. However, existing transmission gearboxes struggle to monitor the gearbox's load status when transmitting large amounts of power to the motor. Internal anomalies in the gearbox can pose operational risks. Ensuring the safe operation of electric anchor winches, particularly in environments with stringent explosion-proof requirements, has become a pressing issue. Utility Model Content

[0003] The main purpose of the utility model is to propose a flameproof three-stage transmission gearbox for an electric anchor winch, so as to solve the defects of the existing technology that the existing transmission gearbox is difficult to detect the stress state of the gearbox when transmitting a large motor, and when there is an abnormality inside the gearbox, the gearbox will have an operation risk.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a flameproof three-stage transmission gearbox for an electric anchor winch, comprising a gearbox body, wherein a high-speed large gear shaft, a low-speed small gear shaft and an output shaft are installed inside the gearbox body; the high-speed large gear shaft, the low-speed small gear shaft and the output shaft are connected via a gear combination transmission;

[0006] The gear box body is equipped with an explosion-proof sensor for detecting the force on the high-speed large gear shaft; the explosion-proof sensor includes an elastomer, which is installed on the gear box body. The shaft end of the high-speed large gear shaft is connected to the elastomer via a high-speed end bearing. The outer end of the elastomer is provided with an end cover. The gear box body is fixed with an explosion-proof junction box electrically connected to the electric bridge in the elastomer, and an outlet wire protection cover is fixed to the outer side of the end cover.

[0007] As an optimal technical solution of the present utility model, the gear combination includes a high-speed large gear and a secondary pinion arranged on the high-speed large gear shaft, the low-speed pinion shaft is provided with a secondary large gear, the output shaft is provided with a low-speed large gear, the secondary pinion is meshed with the secondary large gear, the low-speed large gear is meshed with the low-speed pinion shaft, and the high-speed large gear is provided with a motor pinion on the motor shaft.

[0008] As a preferred technical solution of the present invention, a box cover is fixed to the top of the gear box body by bolts.

[0009] As a preferred technical solution of the present invention, the high-speed gear and the secondary pinion are axially fixed on the high-speed gear shaft via a gear distance ring.

[0010] As a preferred technical solution of the present invention, the shaft end of the low-speed pinion shaft is connected to the gear box body via a low-speed bearing.

[0011] As a preferred technical solution of the present invention, both ends of the output shaft are mounted on the gear box body via low-speed end bearings.

[0012] As a preferred technical solution of the present invention, a ventilation tube is installed in the gear box.

[0013] The beneficial effects of the utility model are:

[0014] 1. This flameproof three-stage transmission gearbox for electric anchor winches features a gear combination connecting the high-speed gear shaft, low-speed pinion shaft, and output shaft, achieving three-stage transmission. The gearbox is equipped with a flameproof sensor for detecting the force applied to the high-speed gear shaft. The force measurement direction of the elastomer forms a certain angle with the end cap, consistent with the force applied to the high-speed end bearing. The wire protection cover is bolted to the outside of the end cap and sealed with glue. The end cap is welded to the elastomer to ensure flameproof performance. The bridge in the elastomer generates an electrical signal that is transmitted to the explosion-proof junction box, which is then transmitted via a cable to the electrical control cabinet for measuring the force applied to the gearbox. This allows for detection of the gearbox's force state, eliminating operational risks.

[0015] 2. The utility model can adjust the gearbox reduction ratio over a wide range through three-stage transmission to adapt to anchor winches with different loads; the explosion-proof flange sensor integrates the elastomer and the end cover into one, which can better isolate the explosion. Its force measurement direction is consistent with the force direction of the gearbox bearing, and it can be directly installed on the gearbox, which is easy to disassemble and maintain.

[0016] In summary, by introducing innovative designs such as explosion-proof sensors and three-stage transmission gear combinations, the technical problem existing in the existing technology is effectively solved, that is, when the existing transmission gearbox is transmitting a large motor, it is difficult to detect the stress state of the gearbox, and when there is an internal abnormality in the gearbox, there is an operation risk of the gearbox. This ensures the safe operation of the gearbox in an environment with high explosion-proof requirements, and provides strong support for the widespread application of electric anchor winches in explosion-proof environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of a flameproof three-stage transmission gearbox for an electric anchor winch in the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of a gear box body of a flameproof three-stage transmission gear box for an electric anchor winch in the utility model;

[0020] Figure 3 This is a schematic structural diagram of a flameproof sensor for a flameproof three-stage transmission gearbox of an electric anchor winch according to the present invention;

[0021] Figure 4 The utility model is a transmission structure diagram of a flameproof three-stage transmission gear box for an electric anchor winch.

[0022] In the figure: 1. Gearbox body; 2. High-speed large gear shaft; 3. Low-speed small gear shaft; 4. Output shaft; 5. Explosion-proof sensor; 6. Elastomer; 7. End cover; 8. Explosion-proof junction box; 9. Outlet protection cover; 10. High-speed large gear; 11. Secondary small gear; 12. Secondary large gear; 13. Low-speed large gear; 14. Motor small gear; 15. Box cover.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In addition, if the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0026] Example 1

[0027] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the present invention is a flameproof three-stage transmission gearbox for an electric anchor winch, comprising a gearbox body 1, wherein a high-speed large gear shaft 2, a low-speed small gear shaft 3 and an output shaft 4 are installed inside the gearbox body 1; the high-speed large gear shaft 2, the low-speed small gear shaft 3 and the output shaft 4 are connected via a gear combination transmission;

[0028] The gearbox 1 is equipped with an explosion-proof sensor 5 for detecting the force applied to the high-speed gear shaft 2. The explosion-proof sensor 5 includes an elastomer 6, which is mounted on the gearbox 1. The shaft end of the high-speed gear shaft 2 is connected to the elastomer 6 via a high-speed end bearing. The outer end of the elastomer 6 is provided with an end cap 7. The gearbox 1 is fixed with an explosion-proof junction box 8 electrically connected to the bridge in the elastomer 6. The outer side of the end cap 7 is fixed with an outlet wire protection cover 9. The high-speed gear shaft 10, the low-speed pinion shaft 3, and the output shaft 4 are connected via a gear combination transmission, thus achieving a three-stage transmission. The gearbox is equipped with an explosion-proof sensor 5 for detecting the force applied to the high-speed gear shaft 10. The force measuring direction of the elastomer 6 is at a certain angle to the end cap 7, which is consistent with the force angle of the high-speed end bearing. The wire outlet protection cover 9 is fixed to the outside of the end cover 7 with bolts and sealed with glue; the end cover 7 is welded to the elastomer 6 as a whole to ensure the explosion-proof effect. The bridge in the elastomer 6 generates an electrical signal and transmits it to the explosion-proof junction box 8, and then transmits it to the electrical control cabinet through a cable to measure the force on the gearbox; in this way, the force state of the gearbox can be detected to avoid the operation risk of the gearbox. By installing the explosion-proof sensor 5 on the gearbox body, the elastomer of the sensor is connected to the shaft end of the high-speed large gear shaft and is sealed by the end cover and the wire outlet protection cover. The integrated design of the elastomer and the end cover enhances the explosion-proof effect and is convenient for disassembly and maintenance. The explosion-proof junction box and the wire outlet protection cover together ensure the safe connection and transmission of the sensor cable, preventing sparks or explosions in an explosion-proof environment.

[0029] The operating principle of the explosion-proof sensor 5 is that when the shaft 2 of the high-speed gear 10 is subjected to force, the elastomer 6 undergoes a slight deformation, which is converted into an electrical signal change in the bridge. The electrical signal is then transmitted to the electrical control cabinet via an explosion-proof junction box and cables for force analysis and calculation. This design enables real-time monitoring of the stress state of the high-speed gear shaft, and thus the gearbox itself, ensuring safe operation in environments with strict explosion-proof requirements and contributing to the safety and reliability of the electrical system.

[0030] In specialized environments like ocean-going tankers and liquefied gas carriers, electrical equipment must meet stringent explosion-proof requirements. This utility model utilizes flameproof sensors, explosion-proof junction boxes, and wire protection covers to ensure safe operation of the gearbox in explosion-proof environments, eliminating the risk of explosions caused by electrical failures.

[0031] The gear assembly includes a high-speed gear 10 and a secondary pinion 11 provided on the high-speed gear shaft 2. The low-speed pinion shaft 3 is provided with a secondary gear 12. The output shaft 4 is provided with a low-speed gear 13. The secondary pinion 11 meshes with the secondary gear 12, and the low-speed gear 13 meshes with the low-speed pinion shaft 3. The high-speed gear 10 is provided with a motor pinion 14 on the motor shaft, which meshes with the high-speed gear 10. The motor shaft drives the motor pinion 14 to rotate, and the motor pinion meshes with the high-speed gear 10, thereby driving the high-speed gear shaft 2 to rotate. The high-speed gear shaft 2, in turn, drives the low-speed pinion shaft 3 to rotate through the meshing action of the secondary pinion 11 and the secondary gear 12. The low-speed pinion shaft 3 then drives the output shaft 4 through the low-speed gear 13, thereby achieving a three-stage transmission. The three-stage transmission allows the gearbox reduction ratio to be adjusted over a wide range to adapt to different loads of the anchor winch. The three-stage transmission provides more flexible transmission ratio selection, allowing the electric anchor winch to operate efficiently under various working conditions.

[0032] The gearbox 1 is secured with a cover 15 bolted to the top, facilitating disassembly and maintenance. An explosion-proof junction box 8 is also bolted to the gearbox 1. The end cap 7 of the explosion-proof sensor 5 extends from the bottom of the wire protection cover 9 and connects to the explosion-proof junction box 8. Wires then exit from the bottom of the explosion-proof junction box 8 and pass through the wiring conduit of the gearbox to connect to the electrical control cabinet. The cover design makes the gearbox interior easily accessible for maintenance and inspection.

[0033] The high-speed gear 10 and the secondary pinion 11 are axially fixed to the high-speed gear shaft 2 via a gear spacer ring. The ends of the low-speed pinion shaft 3 are connected to the gearbox 1 via low-speed bearings. The two ends of the output shaft 4 are mounted on the gearbox 1 via low-speed end bearings. The gearbox 1 is equipped with a vent pipe to help balance the pressure inside the gearbox and reduce malfunctions caused by pressure changes.

[0034] The gear box body 1 is provided with an observation window 16 so as to facilitate viewing the internal operating conditions. The gear box body is also provided with a liquid level gauge 17 so as to facilitate detecting the liquid level of the lubricating oil in the gear box body and to replenish it in time.

[0035] During operation, the explosion-proof three-stage transmission gearbox for electric anchor winch, the motor shaft drives the motor pinion 14 to rotate, the motor pinion engages with the high-speed gearwheel 10, and then drives the high-speed gearwheel shaft 2 to rotate, and the high-speed gearwheel shaft 2 drives the low-speed pinion shaft 3 to rotate through the meshing action of the secondary pinion 11 and the secondary gearwheel 12, and the low-speed pinion shaft 3 drives the output shaft 4 through the low-speed gearwheel 13, thereby realizing three-stage transmission. The three-stage transmission can adjust the gearbox reduction ratio over a large range to adapt to anchor winches with different loads; the high-speed gearwheel 10 shaft 2, the low-speed pinion shaft 3 and the output shaft 4 are connected through a gear combination transmission, thus realizing three-stage transmission, and the gearbox body is equipped with an explosion-proof sensor 5 for force detection of the high-speed gearwheel 10 shaft 2, wherein the force measuring direction of the elastomer 6 is at a certain angle to the end cover 7, which is consistent with the force angle of the high-speed end bearing. The wire protection cover 9 is fixed to the outside of the end cover 7 with bolts and sealed with glue; the end cover 7 is welded to the elastomer 6 as a whole to ensure the explosion-proof effect. The bridge in the elastomer 6 generates an electrical signal and transmits it to the explosion-proof junction box 8, and then transmits it to the electrical control cabinet through a cable to measure the force on the gearbox; in this way, the force state of the gearbox can be detected to avoid operational risks of the gearbox.

[0036] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

[0037] In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or solutions that meet both A and B. In addition, the technical solutions of various embodiments may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. If the combination of technical solutions is mutually contradictory or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. A flameproof three-stage transmission gearbox for an electric anchor winch, characterized in that: The invention comprises a gear box body (1), wherein a high-speed large gear shaft (2), a low-speed small gear shaft (3) and an output shaft (4) are installed inside the gear box body (1); the high-speed large gear shaft (2), the low-speed small gear shaft (3) and the output shaft (4) are connected to each other through a gear combination transmission; The gear box (1) is equipped with an explosion-proof sensor (5) for detecting the force on the high-speed gear shaft (2); the explosion-proof sensor (5) includes an elastic body (6), the elastic body (6) is installed on the gear box (1), the shaft end of the high-speed gear shaft (2) is connected to the elastic body (6) via a high-speed end bearing, the outer end of the elastic body (6) is provided with an end cover (7), the gear box (1) is fixed with an explosion-proof junction box (8) electrically connected to the bridge in the elastic body (6), and the outer side of the end cover (7) is fixed with an outlet wire protection cover (9).

2. The flameproof three-stage transmission gearbox for an electric anchor winch according to claim 1, characterized in that: The gear assembly comprises a high-speed large gear (10) and a secondary small gear (11) arranged on a high-speed large gear shaft (2); a secondary large gear (12) is provided on the low-speed small gear shaft (3); a low-speed large gear (13) is provided on the output shaft (4); the secondary small gear (11) is meshed with the secondary large gear (12); the low-speed large gear (13) is meshed with the low-speed small gear shaft (3); and the high-speed large gear (10) is meshed with a motor small gear (14) on a motor shaft.

3. The flameproof three-stage transmission gearbox for an electric anchor winch according to claim 1, characterized in that: A box cover (15) is fixed to the top of the gear box body (1) via bolts.

4. The flameproof three-stage transmission gearbox for an electric anchor winch according to claim 1, characterized in that: The high-speed large gear (10) and the secondary small gear (11) are axially fixed on the high-speed large gear shaft (2) via a gear distance ring.

5. The flameproof three-stage transmission gearbox for an electric anchor winch according to claim 2, characterized in that: The shaft end of the low-speed pinion shaft (3) is connected to the gear box body (1) via a low-speed bearing.

6. The flameproof three-stage transmission gearbox for an electric anchor winch according to claim 1, characterized in that: Both ends of the output shaft (4) are mounted on the gear box body (1) via low-speed end bearings.

7. The flameproof three-stage transmission gearbox for an electric anchor winch according to claim 1, characterized in that: A vent pipe is installed in the gear box body (1).

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