A stabilized reducer for cranes

Abstract

This utility model discloses a stable reducer for cranes, including a lower housing, an upper housing, and a planetary gear transmission mechanism. The planetary gear transmission mechanism is installed between the lower housing and the upper housing, which are connected by bolts. A self-lubricating component is installed on the top of the upper housing, located above the planetary gear transmission mechanism. This utility model, by installing the self-lubricating component on the upper end of the planetary gear transmission mechanism, provides lubrication during reducer operation, reducing the burden of employing a single worker. When the planetary gear transmission mechanism is in operation, the cylindrical gears mesh and rotate, causing the blocking ball to rotate within the transparent oil outlet pipe. When the groove on the blocking ball is parallel to the side wall of the transparent oil outlet pipe, lubricating oil can flow through the groove. When the groove on the blocking ball rotates to the top or bottom, lubricating oil cannot pass through, thus intermittently lubricating the planetary gear transmission mechanism and saving lubricating oil consumption.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically a stable speed reducer for cranes. Background Technology

[0002] The speed reducer on a crane is mainly used to reduce the motor speed and increase the torque, ensuring the smoothness and safety of lifting operations. Its core feature is to convert the high-speed rotation of the motor into the low-speed, high-torque output required by the lifting mechanism, while improving load-bearing capacity and impact resistance through optimized gear transmission system.

[0003] The prior art, disclosed in patent document CN215634744U, presents the following technical solution: a planetary gear reducer for a crane, comprising a front cover and a rear cover, the ends of which are fixed by bolts. A first shaft hole is opened on the side wall of the end of the front cover, and a main shaft is rotatably connected to the first shaft hole through a bearing. A planetary carrier is fixedly connected to the end of the main shaft, and a plurality of annularly distributed horizontal shafts are fixedly connected to the side wall of the planetary carrier. Planetary gears are keyed to the ends of the horizontal shafts.

[0004] The above-mentioned technical solution relies on the mechanical push of a manual threaded rod for lubrication of the internal planetary gears, which is generally unreliable. In addition, the oil filling pipe located above the gears does not have a blocking structure. When lubrication is not required, the lubricating oil inside the oil reservoir may still drip, and there is no collection structure, which will lead to the waste of lubricating oil until the lubricating oil stored in the oil reservoir runs dry. New oil needs to be added for the next lubrication, which is troublesome. Utility Model Content

[0005] The purpose of this invention is to provide a stable reducer for cranes to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stable reducer for cranes, comprising a lower housing, an upper housing, and a planetary gear transmission mechanism, wherein the planetary gear transmission mechanism is installed between the lower housing and the upper housing, the lower housing and the upper housing are connected by bolts, and a self-lubricating component is installed on the top of the upper housing and located above the planetary gear transmission mechanism.

[0007] The self-lubricating assembly includes an oil reservoir, which is located on the upper part of the upper housing. A transparent oil outlet pipe is fixedly connected to the bottom of each oil reservoir and passes through the upper housing. A nozzle is fixedly connected to the bottom of each transparent oil outlet pipe. A blocking ball is rotatably connected inside each transparent oil outlet pipe. A slot is opened on one side of each blocking ball. A rotating rod is fixedly connected to the rear side of each blocking ball. The rotating rod is connected to the transparent oil outlet pipe through a bearing. A cylindrical gear is mounted on the top side inside the upper housing and is connected to the rotating rod.

[0008] In the above technical solution, when the groove on the plug ball is parallel to the side wall of the transparent oil outlet pipe, the lubricating oil can flow down through the groove. When the groove on the plug ball rotates to the top or bottom, the lubricating oil cannot pass through, thereby intermittently lubricating the planetary gear transmission mechanism and saving lubricating oil consumption.

[0009] A filter plate is provided on the lower inner wall of the lower housing. The filter plate is located below the planetary gear transmission mechanism. A collection box is snapped into the bottom inner cavity of the lower housing. A connecting plate is fixedly connected to one end of the outer side of the collection box.

[0010] In the above technical solution, a collection box is set at the bottom of the lower housing to collect the dripping lubricating oil, reducing waste, and the filter screen can filter impurities or metal shavings in the lubricating oil.

[0011] As a further preferred embodiment of this technical solution, an elastic bushing is provided between the lower housing and the upper housing, and the elastic bushing is located on the outside of the bearing of the planetary gear transmission mechanism.

[0012] In the above technical solution, the elastic bushing can absorb high-frequency vibrations.

[0013] As a further preferred embodiment of this technical solution, a sealing groove is provided on one side of the outer surface of the lower housing, and a sealing ring is provided on the side of the connecting plate near the outer surface of the lower housing, the sealing ring being embedded in the sealing groove.

[0014] In the above technical solution, the sealing groove and sealing ring can reduce the oxidation or contamination of lubricating oil collected in the collection box and improve the utilization rate of lubricating oil.

[0015] As a further preferred embodiment of this technical solution, heat-conducting plates are arranged on the top side of the upper housing, the heat-conducting plates pass through the upper housing, and heat dissipation fins are fixedly connected to the top side of each heat-conducting plate, and heat dissipation grooves are arranged on each heat dissipation fin.

[0016] In the above technical solution, the heat-conducting plate and heat dissipation fins can dissipate heat from inside the casing.

[0017] As a further preferred embodiment of this technical solution, a mounting plate is bolted to one end of the upper housing, and a cooling fan is installed inside the mounting plate.

[0018] In the above technical solution, the cooling fan uses forced convection to dissipate heat from the cooling fins.

[0019] As a further preferred embodiment of this technical solution, the cylindrical gear meshes with the gear on the planetary gear transmission mechanism.

[0020] As a further preferred embodiment of this technical solution, the upper housing is provided with an observation window at the front end, and the observation window is located at the front end of the transparent oil outlet pipe.

[0021] The above technical solution facilitates observation of the location of the groove of the clogging ball, preventing excessive leakage of lubricating oil and waste.

[0022] This utility model provides a stable reducer for cranes, which has the following advantages: (1) The present invention has a self-lubricating component installed on the upper end of the planetary gear transmission mechanism. When the reducer is running, it can lubricate, reducing the burden of having a single worker. When the planetary gear transmission mechanism is in motion, the cylindrical gear meshes and rotates, which in turn causes the blocking ball to rotate in the transparent oil outlet pipe. When the groove on the blocking ball is parallel to the side wall of the transparent oil outlet pipe, the lubricating oil can flow down through the groove. When the groove on the blocking ball rotates to the top or bottom, the lubricating oil cannot pass through, thus enabling intermittent lubrication of the planetary gear transmission mechanism and saving lubricating oil consumption.

[0023] (2) By setting a collection box at the bottom of the lower housing, the present invention can collect the dripping lubricating oil, reduce waste, and the set filter plate can filter impurities or metal shavings in the lubricating oil. The set sealing groove and sealing ring can reduce the phenomenon of oxidation or contamination of the lubricating oil collected in the collection box, and improve the utilization rate of the lubricating oil. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the inner side of the upper shell of this utility model; Figure 4 This is an enlarged view of section B of this utility model; Figure 5 This is an enlarged view of point A in this utility model; In the diagram: 1. Lower housing; 2. Upper housing; 3. Planetary gear transmission mechanism; 4. Elastic bushing; 5. Filter screen; 6. Collection box; 61. Connecting plate; 11. Sealing groove; 12. Sealing ring; 7. Self-lubricating component; 71. Oil reservoir; 72. Transparent oil outlet pipe; 73. Nozzle; 74. Blocking ball; 741. Groove; 75. Cylindrical gear; 21. Heat-conducting plate; 22. Heat dissipation fins; 23. Mounting plate; 24. Cooling fan; 25. Observation window. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] This utility model provides a technical solution: such as Figure 1 and Figure 2 As shown in this embodiment, a stable reducer for cranes includes a lower housing 1, an upper housing 2, and a planetary gear transmission mechanism 3. The planetary gear transmission mechanism 3 is installed between the lower housing 1 and the upper housing 2, which are connected by bolts. A self-lubricating component 7 is installed on the top of the upper housing 2 and is located above the planetary gear transmission mechanism 3. An elastic bushing 4 is provided between the lower housing 1 and the upper housing 2. The elastic bushing 4 can absorb high-frequency vibrations. The elastic bushing 4 is located on the outside of the bearing of the planetary gear transmission mechanism 3. An observation window 25 is provided at the front end of the upper housing 2. The observation window 25 is located at the front end of the transparent oil outlet pipe 72. The observation window 25 and the transparent oil outlet pipe 72 facilitate observation of the position of the groove 741 of the internal blocking ball 74. When the reducer finishes operation, the groove 741 of the blocking ball 74 needs to be facing upwards or downwards to avoid leakage of more lubricating oil and waste.

[0027] like Figure 3 and Figure 4 As shown, the self-lubricating assembly 7 includes an oil reservoir 71, which is located on the upper part of the upper housing 2. A transparent oil outlet pipe 72 is fixedly connected to the bottom of each oil reservoir 71, passing through the upper housing 2. A nozzle 73 is fixedly connected to the bottom of each transparent oil outlet pipe 72. A blocking ball 74 is rotatably connected inside each transparent oil outlet pipe 72. A slot 741 is opened on one side of each blocking ball 74. A rotating rod is fixedly connected to the rear side of each blocking ball 74. The rotating rod is connected to the transparent oil outlet pipe 72 via a bearing. A cylindrical gear 75 is mounted on the top side of the interior of the upper housing 2 via a mounting bracket. The cylindrical gear 75 is connected to the rotating rod and to the gear on the planetary gear transmission mechanism 3. The planetary gear transmission mechanism 3 is meshed and connected, with a self-lubricating component 7 installed on the upper end. Lubrication is provided when the reducer is running, reducing the burden of having to employ a single person. When the planetary gear transmission mechanism 3 is in operation, the cylindrical gear 75 meshes and rotates, causing the blocking ball 74 to rotate inside the transparent oil outlet pipe 72. When the groove 741 on the blocking ball 74 is parallel to the side wall of the transparent oil outlet pipe 72, lubricating oil can flow down through the groove 741. When the groove 741 on the blocking ball 74 rotates to the top or bottom, lubricating oil cannot pass through, thus intermittently lubricating the planetary gear transmission mechanism 3 and saving lubricating oil consumption.

[0028] like Figure 2 and Figure 5As shown, a filter plate 5 is provided on the inner wall below the lower housing 1. The filter plate 5 is located below the planetary gear transmission mechanism 3. A collection box 6 is snapped into the inner cavity at the bottom of the lower housing 1. A connecting plate 61 is fixedly connected to one end of the outer side of the collection box 6. A sealing groove 11 is provided on one outer surface of the lower housing 1. A sealing ring 12 is provided on the side of the connecting plate 61 near the outer surface of the lower housing 1. The sealing ring 12 is embedded in the sealing groove 11. The collection box 6 at the bottom of the lower housing can collect dripping lubricating oil, reducing waste. The filter plate 5 can filter impurities or metal shavings in the lubricating oil. The sealing groove 11 and the sealing ring 12 can reduce the oxidation or contamination of the lubricating oil collected in the collection box 6, improving the utilization rate of the lubricating oil.

[0029] like Figure 1 and Figure 2 As shown, heat-conducting plates 21 are arranged on the top side of the upper shell 2, passing through the upper shell 2. Heat dissipation fins 22 are fixedly connected to the top side of each heat-conducting plate 21. Heat dissipation grooves are arranged on each heat dissipation fin 22. A mounting plate 23 is bolted to one end of the upper shell 2. A cooling fan 24 is installed inside the mounting plate 23. The heat-conducting plates 21 and heat dissipation fins 22 can conduct heat out of the shell and dissipate heat from the heat dissipation fins 22 through forced convection by the cooling fan 24, thereby dissipating heat from the shell.

[0030] This utility model provides a stable reducer for cranes. The specific working principle is as follows: A self-lubricating component 7 is meshed and installed on the upper end of the planetary gear transmission mechanism 3, which can lubricate the reducer when it is running. That is, when the planetary gear transmission mechanism 3 is in motion, the cylindrical gear 75 meshes and rotates, which in turn causes the blocking ball 74 to rotate in the transparent oil outlet pipe 72. When the groove 741 on the blocking ball 74 is parallel to the side wall of the transparent oil outlet pipe 72, the lubricating oil can flow down through the groove 741. When the groove 741 on the blocking ball 74 rotates to the top or bottom, the lubricating oil cannot pass through, thus intermittently lubricating the planetary gear transmission mechanism 3. The meshing between the gears of the planetary gear transmission mechanism 3 ensures that all other gears are in contact with the lubricating oil. The dripping lubricating oil is filtered through the filter screen plate 5 and collected in the collection box 6. It can be removed by pulling out later. If the old oil contains a small amount of impurities and is not severely oxidized, it can be used temporarily as an emergency, but the oil condition needs to be monitored regularly to avoid wear on the equipment. The observation window 25 and transparent oil outlet pipe 72 are provided to facilitate observation of the position of the groove 741 of the internal blocking ball 74. When the reducer finishes operation, the groove 741 of the blocking ball 74 should be facing up or down to avoid leakage of more lubricating oil and waste.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stable reducer for cranes, comprising a lower housing (1), an upper housing (2), and a planetary gear transmission mechanism (3), characterized in that: The planetary gear transmission mechanism (3) is installed between the lower housing (1) and the upper housing (2), the lower housing (1) and the upper housing (2) are connected by bolts, and a self-lubricating component (7) is installed on the top of the upper housing (2) and is located above the planetary gear transmission mechanism (3); The self-lubricating component (7) includes an oil reservoir (71), which is located on the upper end of the upper housing (2). A transparent oil outlet pipe (72) is fixedly connected to the bottom of each oil reservoir (71). The transparent oil outlet pipe (72) passes through the upper housing (2). A nozzle (73) is fixedly connected to the bottom of each transparent oil outlet pipe (72). A blocking ball (74) is rotatably connected inside each transparent oil outlet pipe (72). A slot (741) is opened on one side of each blocking ball (74). A rotating rod is fixedly connected to the rear side of each blocking ball (74). The rotating rod is connected to the transparent oil outlet pipe (72) through a bearing. A cylindrical gear (75) is mounted on the top side of the interior of the upper housing (2) through a mounting bracket. The cylindrical gear (75) is connected to the rotating rod. The lower housing (1) has a filter plate (5) on its inner wall. The filter plate (5) is located below the planetary gear transmission mechanism (3). A collection box (6) is snapped into the bottom cavity of the lower housing (1). A connecting plate (61) is fixedly connected to one end of the outer side of the collection box (6).

2. The crane-type stabilized reducer according to claim 1, characterized in that: Both the lower housing (1) and the upper housing (2) are provided with elastic bushings (4), which are located on the outside of the bearing of the planetary gear transmission mechanism (3).

3. A stable reducer for cranes according to claim 1, characterized in that: A sealing groove (11) is provided on one side of the outer surface of the lower housing (1), and a sealing ring (12) is provided on the side of the connecting plate (61) near the outer surface of the lower housing (1), and the sealing ring (12) is embedded in the sealing groove (11).

4. A stable reducer for cranes according to claim 1, characterized in that: The upper shell (2) is provided with heat-conducting plates (21) arranged on the top side. The heat-conducting plates (21) pass through the upper shell (2). Heat dissipation fins (22) are fixedly connected to the top side of the heat-conducting plates (21). Heat dissipation grooves are arranged on the heat dissipation fins (22).

5. A stable reducer for cranes according to claim 1, characterized in that: The upper housing (2) is bolted to one end of a mounting plate (23), and a cooling fan (24) is installed inside the mounting plate (23).

6. A stable reducer for cranes according to claim 1, characterized in that: The cylindrical gear (75) meshes with the gear on the planetary gear transmission mechanism (3).

7. A stable reducer for cranes according to claim 1, characterized in that: The upper housing (2) is provided with an observation window (25) at the front end, and the observation window (25) is located at the front end of the transparent oil outlet pipe (72).

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