Rotary speed reducer for multifunctional lorry-mounted crane

Abstract

The utility model relates to the technical field of crane accessories, and discloses a rotary speed reducer for a multifunctional lorry-mounted crane, which comprises a speed reducer shell, a cooling pipeline is wrapped on the arc-shaped outer side wall of the speed reducer shell, and a plurality of uniformly distributed heat conducting columns are fixedly arranged on the inner side wall of the cooling pipeline. The end part of the heat conduction column extends into the cooling pipeline; a cooling water tank is arranged on one side of the cooling pipeline, a water outlet pipe is fixedly arranged on one side of the cooling water tank, a water return pipe is fixedly arranged on the other side of the cooling water tank, and the end, away from the cooling water tank, of the water outlet pipe and the end, away from the cooling water tank, of the water return pipe are fixedly connected with the two sides of the cooling pipeline correspondingly. And a water pump and a refrigerator are fixedly arranged in the cooling water tank. Water cooling and the heat conduction columns are combined, so that heat in the speed reducer shell can be quickly conducted out, the interior of the speed reducer shell can be quickly cooled, and the phenomenon that the rotary speed reducer is damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy machinery accessories, in particular to a rotary reducer for a multifunctional truck-mounted crane. Background Art

[0002] The rotary reducer is an important component of a truck-mounted crane. During operation, a large amount of heat is generated due to the meshing transmission of the worm of the slewing bearing in the rotary reducer, resulting in an increase in the oil temperature inside the housing of the rotary reducer. As the oil pressure increases accordingly, if the oil pressure is too high, the housing may be deformed or cracked, leading to damage to the rotary reducer. CN208417488U discloses a horizontal rotary reducer, which includes a slewing bearing, a worm and a housing. The slewing bearing and the worm are meshed and arranged inside the housing. The housing includes an annular part and a rectangular part. A plurality of pressure relief devices are provided on the inner peripheral surface of the annular part and the outer side surface of the rectangular part. The pressure relief device includes a conical hole. A limiting plate is provided at the entrance of the conical hole. A slider is provided inside the conical hole. The slider can slide inside the conical hole. When the slider slides to the front end of the conical hole, it just fits tightly against the inner wall of the conical hole. A circular sealing plate is provided at the end of the slider, and a heat conducting rod is provided on the sealing plate.

[0003] In the above solution, only the heat conducting rod is used to conduct the heat inside the housing of the rotary reducer. The heat conduction efficiency of the heat conducting rod alone is low, and it is impossible to quickly dissipate the heat inside the housing of the simple rotary reducer. Therefore, a rotary reducer for a multifunctional truck-mounted crane is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems raised in the background art, and a rotary reducer for a multifunctional truck-mounted crane is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A rotary reducer for a multifunctional truck-mounted crane includes a reducer housing. A cooling pipeline is wrapped around the arc-shaped outer side wall of the reducer housing. A fixing mechanism is provided between the side wall of the cooling pipeline and the side wall of the reducer housing. A plurality of uniformly distributed heat conducting columns are fixedly arranged on the inner side wall of the cooling pipeline, and the ends of the heat conducting columns extend into the interior of the cooling pipeline. A cooling water tank is provided on one side of the cooling pipeline. A water outlet pipe is fixedly provided on one side of the cooling water tank, and a water return pipe is fixedly provided on the other side of the cooling water tank. The end of the water outlet pipe away from the cooling water tank and the end of the water return pipe away from the cooling water tank are respectively fixedly connected to both sides of the cooling pipeline. A water pump and a refrigerator are fixedly arranged inside the cooling water tank. The output end of the water pump is fixedly connected to one end of the water outlet pipe.

[0007] Preferably, the fixing mechanism comprises a fixing plate and bolts, one end of the fixing plate is fixedly connected to the side wall of the cooling pipe, and the other end of the fixing plate is fixedly connected to the side wall of the reducer housing via bolts.

[0008] Preferably, the fixing plate and the cooling pipe are fixedly welded.

[0009] Preferably, a heat conducting plate is fixedly embedded in the inner wall of the cooling pipe, and the heat conducting plate is made of an aluminum alloy plate.

[0010] Preferably, the heat-conducting column is made of an aluminum alloy column, and a contact groove is provided at one end of the heat-conducting column located inside the reducer housing, and a contact head is provided inside the contact groove.

[0011] Preferably, a plurality of evenly distributed spoiler blocks are fixedly provided on the inner side wall of the cooling pipe.

[0012] Preferably, a spoiler motor is fixedly provided on the side wall of the cooling water tank, and an output end of the spoiler motor extends to the interior of the cooling water tank and is fixedly provided with a spoiler blade.

[0013] Preferably, a mounting foot is fixedly provided on the side wall of the cooling water tank, and a mounting hole is provided on the mounting foot.

[0014] Preferably, the water outlet pipe and the water return pipe are both made of hard alloy pipes.

[0015] Compared with the prior art, the utility model provides a multifunctional rotary reducer for a truck-mounted crane, which has the following beneficial effects:

[0016] 1. Through the cooling pipe, heat-conducting column, cooling water tank, water outlet pipe, water return pipe, water pump and refrigerator, the heat-conducting column can conduct the heat inside the reducer housing to the outside, and at the same time, the water pump can draw the cooling water inside the cooling water tank into the inside of the water outlet pipe, and then into the inside of the cooling pipe. When the cooling water contacts the heat-conducting column, it can realize rapid heat exchange. At the same time, the cooling water can reduce the temperature of the inner wall of the cooling pipe, so that the heat inside the reducer housing can be conducted out, so that the temperature inside the reducer housing can be quickly reduced. The water after heat exchange is recovered in the cooling water tank through the return pipe, and then cooled by the refrigerator to ensure the cooling effect of the reducer housing.

[0017] 2. The contact groove and contact head arranged on the heat-conducting column can increase the contact area between the lubricating oil and air inside the reducer housing and the heat-conducting column, thereby improving the heat-conducting efficiency of the heat-conducting column.

[0018] 3. With the provided spoiler motor and spoiler fan blades, when the spoiler motor operates, it can drive the spoiler fan blades to rotate, causing the spoiler fan blades to agitate the cooling water inside the cooling water tank, increasing the contact effect between the cooling water and the surface of the cooler, and enabling the recycled water to be quickly refrigerated.

[0019] Parts not involved in this device are the same as or can be implemented using existing technologies. This utility model combines water cooling and heat conduction columns, enabling the heat inside the reducer housing to be quickly dissipated, allowing the interior of the reducer housing to cool down rapidly, and preventing damage to the rotary reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic partial sectional structural diagram of the present utility model;

[0022] Figure 3 is Figure 2 a schematic structural diagram of the cooling pipeline in

[0023] Figure 4 is Figure 1 an enlarged structural diagram of part A in

[0024] Figure 5 is Figure 3 a three-dimensional view of the heat conduction column in

[0025] In the figure: 1. Reducer housing; 2. Cooling pipeline; 3. Heat conduction column; 4. Cooling water tank; 5. Outlet pipe; 6. Return pipe; 7. Water pump; 8. Cooler; 9. Fixed plate; 10. Bolt; 11. Heat conduction plate; 12. Contact groove; 13. Contact head; 14. Spoiler block; 15. Spoiler motor; 16. Spoiler fan blade; 17. Mounting foot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0027] Embodiment 1

[0028] Refer to Figures 1 - 35. A multifunctional rotary reducer for a truck-mounted crane, comprising a reducer housing 1, an arc-shaped outer wall of the reducer housing 1 is wrapped with a cooling pipe 2, a fixing mechanism is provided between the side wall of the cooling pipe 2 and the side wall of the reducer housing 1, a plurality of evenly distributed heat-conducting columns 3 are fixedly provided on the inner wall of the cooling pipe 2, and the ends of the heat-conducting columns 3 extend to the interior of the cooling pipe 2, and the heat-conducting columns 3 can conduct the heat inside the reducer housing 1 to the outside, the heat-conducting columns 3 are made of aluminum alloy columns, and a contact groove 12 is provided at one end of the heat-conducting columns 3 located inside the reducer housing 1, and a contact head 13 is provided inside the contact groove 12, and the contact groove 12 and the contact head 13 can increase the contact area between the lubricating oil and air inside the reducer housing 1 and the heat-conducting columns 3, thereby improving the heat conduction efficiency of the heat-conducting columns 3; a heat-conducting plate 11 is fixedly embedded in the inner wall of the cooling pipe 2, and the heat-conducting plate 11 is made of aluminum alloy plate, and the heat-conducting plate 11 can speed up the heat conduction speed of the internal heat of the reducer housing 1; a cooling plate 11 is provided on one side of the cooling pipe 2. The cooling water tank 4 has a water outlet pipe 5 fixedly arranged on one side of the cooling water tank 4, and a water return pipe 6 fixedly arranged on the other side of the cooling water tank 4. One end of the water outlet pipe 5 away from the cooling water tank 4 and one end of the water return pipe 6 away from the cooling water tank 4 are respectively fixedly connected to the two sides of the cooling pipe 2. The water outlet pipe 5 and the water return pipe 6 are both made of hard alloy pipes. A water pump 7 and a refrigerator 8 are fixedly arranged inside the cooling water tank 4. The output end of the water pump 7 is fixedly connected to one end of the water outlet pipe 5. The water pump 7 can pump the cooling water inside the cooling water tank 1 into the inside of the water outlet pipe 5, and then enter the inside of the cooling pipe 2. When the cooling water contacts the heat-conducting column 3, rapid heat exchange can be achieved. At the same time, the cooling water can reduce the temperature of the inner wall of the cooling pipe 2, so that the heat inside the reducer housing 1 can be extracted, so that the temperature inside the reducer housing 1 is rapidly reduced. The water after heat exchange is recovered in the cooling water tank 1 through the water return pipe 6, and then refrigerated by the refrigerator 8 to ensure the cooling effect of the reducer housing 1.

[0029] Example 2

[0030] Reference Figure 1 and 4 The fixing mechanism includes a fixing plate 9 and a bolt 10. One end of the fixing plate 9 is fixedly connected to the side wall of the cooling pipe 2. The fixing plate 9 and the cooling pipe 2 are fixedly welded. The other end of the fixing plate 9 is fixedly connected to the side wall of the reducer housing 1 by the bolt 10. When the cooling pipe 2 and the reducer housing 1 need to be disassembled, the bolt 10 is loosened by a wrench so that the fixing between the fixing plate 9 and the reducer housing 1 is contacted, so that the cooling pipe 2 and the reducer housing 1 can be disassembled and separated.

[0031] Example 3

[0032] Reference Figures 1 - 2, a plurality of uniformly distributed flow disturbing blocks 14 are fixedly arranged on the inner side wall of the cooling pipe 2. The flow disturbing blocks 14 can play a role in disturbing the water inside the cooling pipe 2, increasing the cooling effect of the cooling water on the cooling pipe; a flow disturbing motor 15 is fixedly arranged on the side wall of the cooling water tank 4. The output end of the flow disturbing motor 15 extends into the interior of the cooling water tank 4 and is fixedly provided with a flow disturbing fan blade 16. When the flow disturbing motor 15 works, it can drive the flow disturbing fan blade 16 to rotate, so that the flow disturbing fan blade 16 agitates the cooling water inside the cooling water tank 4, increasing the contact effect between the cooling water and the surface of the cooler 8, enabling the recycled water to be quickly refrigerated; mounting feet 17 are fixedly arranged on the side wall of the cooling water tank 4, and mounting holes are provided on the mounting feet 17. Mounting bolts are inserted into the interior of the mounting holes, so that the cooling water tank 4 can be fixedly installed.

Claims

1. A multifunctional rotary reducer for a truck-mounted crane, comprising a reducer housing (1), characterized in that: The arc-shaped outer side wall of the reducer housing (1) is wrapped with a cooling pipe (2), a fixing mechanism is provided between the side wall of the cooling pipe (2) and the side wall of the reducer housing (1), and a plurality of evenly distributed heat-conducting columns (3) are fixedly provided on the inner side wall of the cooling pipe (2), and the ends of the heat-conducting columns (3) extend into the interior of the cooling pipe (2); A cooling water tank (4) is provided on one side of the cooling pipe (2), a water outlet pipe (5) is fixedly provided on one side of the cooling water tank (4), and a water return pipe (6) is fixedly provided on the other side of the cooling water tank (4), one end of the water outlet pipe (5) away from the cooling water tank (4) and one end of the water return pipe (6) away from the cooling water tank (4) are respectively fixedly connected to the two sides of the cooling pipe (2), a water pump (7) and a refrigerator (8) are fixedly provided inside the cooling water tank (4), and the output end of the water pump (7) is fixedly connected to one end of the water outlet pipe (5).

2. A multifunctional rotary reducer for a truck-mounted crane according to claim 1, characterized in that: The fixing mechanism comprises a fixing plate (9) and a bolt (10); one end of the fixing plate (9) is fixedly connected to the side wall of the cooling pipe (2); and the other end of the fixing plate (9) is fixedly connected to the side wall of the reducer housing (1) via the bolt (10).

3. The multifunctional rotary reducer for a truck-mounted crane according to claim 2, characterized in that: The fixing plate (9) and the cooling pipe (2) are fixedly welded.

4. The multifunctional rotary reducer for a truck-mounted crane according to claim 1, characterized in that: A heat conducting plate (11) is fixedly embedded in the inner wall of the cooling pipe (2), and the heat conducting plate (11) is made of an aluminum alloy plate.

5. The multifunctional rotary reducer for a truck-mounted crane according to claim 1, characterized in that: The heat-conducting column (3) is made of an aluminum alloy column, and a contact groove (12) is provided at one end of the heat-conducting column (3) located inside the reducer housing (1), and a contact head (13) is provided inside the contact groove (12).

6. The multifunctional rotary reducer for a truck-mounted crane according to claim 1, characterized in that: The inner side wall of the cooling pipe (2) is fixedly provided with a plurality of evenly distributed spoiler blocks (14).

7. The multifunctional rotary reducer for a truck-mounted crane according to claim 1, characterized in that: A spoiler motor (15) is fixedly provided on the side wall of the cooling water tank (4); an output end of the spoiler motor (15) extends into the interior of the cooling water tank (4) and is fixedly provided with a spoiler blade (16).

8. The multifunctional rotary reducer for a truck-mounted crane according to claim 1, characterized in that: A mounting foot (17) is fixedly provided on the side wall of the cooling water tank (4), and a mounting hole is provided on the mounting foot (17).

9. The multifunctional rotary reducer for a truck-mounted crane according to claim 1, characterized in that: The water outlet pipe (5) and the water return pipe (6) are both made of hard alloy pipes.

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