A double cooling device for shield reducer

Abstract

The invention discloses a double cooling device for a shield reducer, which belongs to the technical field of shield machine equipment, and comprises a reducer, wherein the output end of the reducer is provided with a first cooling device, and the middle box of the reducer is provided with a second cooling device, and the first cooling device is connected to the second cooling device; the first cooling device allows the coolant to flow around the output end of the reducer in a spiral manner through an internal first spiral water cavity, and the second cooling device allows the coolant to flow around the middle box of the reducer in a spiral manner through an internal second spiral water cavity, and by setting the flow path to a spiral shape, the contact time between the coolant and the reducer is increased, and the cooling effect is improved; the first cooling device is used to cool the output end of the reducer, and the second cooling device is used to cool the middle box of the reducer, which solves the problem of severe heating of the output end of the reducer and the middle box part, and improves the overall cooling effect of the reducer.

Description

Technical Field

[0001] The invention belongs to the technical field of shield machine equipment, in particular to a double cooling device for a shield reducer. Background Art

[0002] At present, shield machines, as indispensable special equipment for large-scale tunnel excavation, have been widely used in tunnel projects such as subways, railways, highways, municipal pipe networks, cross-river tunnels, and hydropower. Due to the large working load, high heat generation, and limited heat dissipation space of the shield main reducer, a reliable cooling device is required for the shield main reducer.

[0003] The existing main reducer cooling devices are divided into external type, single-chamber type and multi-groove spiral type, among which the spiral cooling device has better effect and is used more frequently. However, the cooling device of the current shield machine reducer is mainly used at the input end. In actual work, the output end and the middle box of the reducer still have heating problems, resulting in varying degrees of wear and even damage to the transmission parts. Some cooling devices also use multiple rubber parts such as sealing rings for sealing, but the sealing is greatly affected by the quality and life of the sealing ring; at the same time, the cooling device lacks dynamic circulation and dynamic flow process, which reduces the contact time and contact area of ​​the lubricating oil and coolant, and reduces the cooling effect of the device. Summary of the invention

[0004] The purpose of the present invention is to provide a dual cooling device for a shield reducer to solve the problems in the prior art of lack of cooling mechanism at the output end of the reducer, too many sealing rings in the water box of the shield reducer, and lack of dynamic circulation flow process of lubricating oil in the cooling device.

[0005] A shield reducer dual cooling device is provided, comprising:

[0006] A reducer, wherein the output end of the reducer is provided with a first cooling device, the middle box of the reducer is provided with a second cooling device, and the first cooling device is connected to the second cooling device;

[0007] The first cooling device comprises a first spiral water cavity and a plurality of first circulating oil cylinders arranged around the outer periphery of the output end of the reducer, wherein the plurality of first circulating oil cylinders penetrate the cavity of the first spiral water cavity, wherein one end of the first circulating oil cylinder is connected to the inner casing of the reducer and the other end is connected to the oil cavity at the output end of the reducer;

[0008] The second cooling device includes a second spiral water cavity arranged around the periphery of the reducer housing and a plurality of second circulating oil cylinders, wherein the plurality of second circulating oil cylinders penetrate the cavity of the second spiral water cavity, one end of the second circulating oil cylinder is connected to the internal housing of the reducer and the other end is connected to the oil cavity of the housing of the reducer.

[0009] As a further solution of the present invention: the first spiral water cavity includes a first annular cavity and a first spiral baffle, and the first spiral water cavity forms a flow channel for spiral circulation of cooling liquid through the first annular cavity and the first spiral baffle.

[0010] As a further solution of the present invention: a plurality of the first circulating oil cylinders are evenly arranged along the circumference of the first annular cavity, and the first circulating oil cylinders penetrate all spiral surfaces of the first spiral partition.

[0011] As a further solution of the present invention: the second spiral water chamber includes a second annular cavity and a second spiral partition, and the second spiral water chamber forms a flow channel for spiral circulation of lubricating oil through the second annular cavity and the second spiral partition.

[0012] As a further solution of the present invention: a plurality of the second circulating oil cylinders are evenly arranged along the circumference of the second annular cavity, and the second circulating oil cylinders penetrate all spiral surfaces of the second spiral partition.

[0013] As a further solution of the present invention: the first spiral partition plate and the second spiral partition plate both include N spiral surfaces and N≥2.

[0014] As a further solution of the present invention: a first water inlet is provided at one end of the first spiral water chamber and a first water outlet is provided at the other end, a second water inlet is provided at one end of the second spiral water chamber and a second water outlet is provided at the other end, and the first water outlet is connected to the second water inlet through a hose assembly.

[0015] As a further solution of the present invention: the first circulating oil cylinder and the second circulating oil cylinder are both provided with M numbers and M≥4.

[0016] As a further solution of the present invention: the first cooling device and the second cooling device are connected to the reducer by welding.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The first cooling device allows the coolant to flow in a spiral manner around the output end of the reducer through the first spiral water cavity inside, and the second cooling device allows the coolant to flow in a spiral manner around the middle box of the reducer through the second spiral water cavity inside. By setting the flow path to be spiral, the contact time between the coolant and the reducer is increased, and the cooling effect is improved.

[0019] 2. The first cooling device is used to cool the output end of the reducer, and the second cooling device is used to cool the middle box of the reducer, which solves the problem of serious heating at the output end and the middle box of the reducer and improves the overall cooling effect of the reducer; the first cooling device and the second cooling device are interconnected and share a set of coolant circulation system. The entire cooling device does not require additional sealing rings for static sealing, reducing the possibility of leakage.

[0020] 3. The first circulating oil cylinder and the second circulating oil cylinder respectively penetrate the first spiral water cavity and the second spiral water cavity. When the coolant circulates in the first spiral water cavity and the second spiral water cavity, it can contact all areas of the first circulating oil cylinder and the second circulating oil cylinder and cool all contact surfaces, thereby increasing the contact cooling time of the coolant and the lubricating oil. Both the coolant and the lubricating oil are in a circulating state, so that the two can be dynamically circulated and cooled, thereby improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a double cooling device for a shield reducer;

[0023] Figure 2 A schematic diagram of the structure of the first spiral water chamber provided by the present invention;

[0024] Figure 3 A schematic diagram of the structure of the second spiral water chamber provided by the present invention;

[0025] Figure 4 This is a schematic structural diagram of the first spiral partition provided by the present invention.

[0026] In the figure: 1. reducer; 2. first cooling device; 21. first spiral water cavity; 211. first annular cavity; 212. first spiral baffle; 213. first water inlet; 214. first water outlet; 22. first circulating oil cylinder; 3. second cooling device; 31. spiral water cavity; 311. second annular cavity; 312. second spiral baffle; 313. second water inlet; 314. second water outlet; 32. second circulating oil cylinder; 4. hose assembly. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-4 As shown, in the embodiment of the present invention, a reducer 1 is included, a first cooling device 2 is provided at the output end of the reducer 1, a second cooling device 3 is provided in the middle housing of the reducer 1, and the first cooling device 2 is connected to the second cooling device 3.

[0030] The first cooling device 2 includes a first spiral water cavity 21 and a plurality of first circulating oil cylinders 22 arranged around the periphery of the output end of the reducer 1. The first spiral water cavity 21 forms a spiral cavity as a whole, and coolant flows inside and flows in a spiral manner in one direction, which lengthens the flow path of the coolant and increases the contact time between the coolant and the water gate housing of the reducer 1; a plurality of first circulating oil cylinders 22 penetrate the cavity of the first spiral water cavity 21, and lubricating oil flows inside. An annular oil cavity is circumferentially arranged at the output end of the reducer 1, and one end of the first circulating oil cylinder 22 is connected to the internal box of the reducer 1 and the other end is connected to the oil cavity at the output end of the reducer 1. During the circulation process in the first spiral water cavity 21, the coolant contacts the first circulating oil cylinder 22 at the same time and takes away the heat of the lubricating oil in the first circulating oil cylinder 22.

[0031] Through this arrangement, the structure of the first cooling device 2 is made compact, the volume of the first cooling device 2 is reduced, and the cooling efficiency is improved, so that dynamic circulation cooling can be performed between the coolant and the lubricating oil.

[0032] Similarly, the second cooling device 3 includes a second spiral water cavity 31 and a plurality of second circulating oil cylinders 32 arranged around the outer periphery of the housing of the reducer 1. The second spiral water cavity 31 forms a spiral cavity as a whole. Since the first spiral water cavity 21 and the second spiral water cavity 31 are interconnected, the two share a set of coolant circulation system, so that the coolant only needs one set of driving mechanism to circulate. The plurality of second circulating oil cylinders 32 penetrate the cavity of the second spiral water cavity 31, and one end of the second circulating oil cylinder 32 is connected to the internal housing of the reducer 1 and the other end is connected to the oil cavity of the housing of the reducer 1.

[0033] The coolant first enters the first cooling device 2 to cool the output end of the reducer 1, flows through the first spiral water cavity 21, and then flows into the second cooling device 3 to cool the middle box of the reducer 1, thereby improving the overall cooling effect of the reducer 1.

[0034] The first cooling device 2 and the second cooling device 3 are connected to the reducer 1 by welding, and have a certain connection strength, and can withstand a large water pressure impact; and the first cooling device 2 and the second cooling device 3 both rely on their own structures to form a closed cavity, and the entire cooling device does not need to use a sealing ring for static sealing treatment, thereby ensuring the sealing of the cooling device.

[0035] See also Figure 2 and Figure 3 As shown, the first spiral water chamber 21 as a whole is composed of a first annular cavity 211 and a first spiral baffle 212. The first annular cavity 211 is formed by an annular shell wound around the periphery of a tubular bearing seat at the output end of the reducer 1, and an annular cavity is formed inside; the first spiral baffle 212 is formed by winding a metal sheet, and the first annular cavity 211 and the first spiral baffle 212 are combined to form a flow channel for one-way spiral circulation of the coolant, which has a guiding and buffering function, can reduce the circulation speed of the coolant and increase the circulation path of the coolant, thereby increasing the contact time between the coolant and the water gate housing of the reducer 1 and the first circulating oil cylinder 22, to prevent the coolant from flowing too fast and being unable to fully take away the heat.

[0036] A plurality of first circulating oil cylinders 22 are evenly arranged along the circumference of the first annular cavity 211. Since the first circulating oil cylinders 22 block the flow path of the coolant, if the first circulating oil cylinders 22 are unevenly arranged, the flow velocity of the entire flow section of the coolant may be uneven, thereby reducing the uniformity of contact between the coolant and the reducer 1 and the first circulating oil cylinders 22, thereby reducing the uniformity of cooling.

[0037] The first circulating oil cylinder 22 penetrates all the spiral surfaces of the first spiral partition 212 to ensure the contact area between the coolant and the first circulating oil cylinder 22. The surface of the first spiral partition 212 is provided with a plurality of mounting holes for assembling the first circulating oil cylinder 22. After the first circulating oil cylinder 22 penetrates the first spiral partition 212, the annular oil cavity at the output end of the reducer 1 is connected with the internal box body for circulating lubricating oil. When the first circulating oil cylinder 22 is installed, the side wall of the first circulating oil cylinder 22 and the inner wall of the first annular cavity 211 need to be separated by a certain distance so that the coolant can fully contact the first circulating oil cylinder 22.

[0038] Similarly, since the internal structure of the second cooling device 3 is similar to that of the first cooling device 2, the specific structure and implementation effect of the second cooling device 3 will not be described in detail herein.

[0039] Furthermore, a first water inlet 213 is provided at one end of the first spiral water chamber 21 and a first water outlet 214 is provided at the other end, a second water inlet 313 is provided at one end of the second spiral water chamber 31 and a second water outlet 314 is provided at the other end, and the first water outlet 214 and the second water inlet 313 are connected through a hose assembly 4. The coolant first enters from the first water inlet 213, flows out from the first water outlet 214 after passing through the first spiral water chamber 21, flows to the second water inlet 313 through the external pipe, passes through the second spiral water chamber 31, and finally flows out from the second water outlet 314. The first cooling device 2 and the second cooling device 3 are mutually circulated and share a set of coolant circulation system, which simplifies the coolant conveying structure and improves the conveying efficiency; the coolant can contact and cool all the first circulating oil cylinders 22 and the second circulating oil cylinders 32 on the section through this path, and the path is a one-way flow, the cooling structure is simple and compact, and the interaction area between the coolant and the lubricating oil is guaranteed.

[0040] For further information, see Figure 1 As shown, the first water outlet 214 and the second water inlet 313 are connected via a hose assembly 4. The hose connection can ensure that the first cooling device 2 and the second cooling device 3 can still be assembled normally when there are deviations in the positions and angles of the holes during installation.

[0041] Specifically, see Figure 2 and Figure 4 As shown, the first spiral baffle 212 and the second spiral baffle 312 each include N spiral surfaces and N ≥ 2. The first spiral baffle 212 and the second spiral baffle 312 need to have a certain number of spiral surfaces to ensure that there is a sufficiently long spiral flow path for the coolant to circulate, increase the contact time between the coolant and the first circulating oil cylinder 22 and the second circulating oil cylinder 32, and make the dynamic heat exchange between the coolant and the lubricating oil more sufficient.

[0042] In addition, the first circulating oil cylinder 22 and the second circulating oil cylinder 32 are both provided with M and M ≥ 4. By ensuring the number of the first circulating oil cylinder 22 and the second circulating oil cylinder 32, the interaction area between the coolant and the lubricating oil is increased, and the circulation amount of the lubricating oil can be increased, so that the heat exchange between the coolant and the lubricating oil is in a balanced state as much as possible.

[0043] When the lubricating oil enters the first spiral water chamber 21 through the first circulating oil cylinder 22, the highest point of the lubricating oil is at 1 / 3-2 / 3 of the first spiral water chamber 21. The upper first circulating oil cylinder 22 maintains pressure balance between the first spiral water chamber 21 and the internal housing of the reducer 1 to ensure dynamic circulation of the lubricating oil. Similarly, the second circulating oil cylinder 32 is similar in structure and configuration to the first circulating oil cylinder 22, and will not be described in detail here.

[0044] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A shield reducer dual cooling device, characterized in that: include: A reducer (1), wherein the output end of the reducer (1) is provided with a first cooling device (2), a middle casing of the reducer (1) is provided with a second cooling device (3), and the first cooling device (2) is connected to the second cooling device (3); The first cooling device (2) comprises a first spiral water cavity (21) arranged around the outer periphery of the output end of the reducer (1) and a plurality of first circulating oil cylinders (22), wherein the plurality of first circulating oil cylinders (22) penetrate the cavity of the first spiral water cavity (21), and one end of the first circulating oil cylinder (22) is connected to the internal casing of the reducer (1) and the other end is connected to the oil cavity at the output end of the reducer (1); The second cooling device (3) comprises a second spiral water cavity (31) arranged around the outer periphery of the housing of the reducer (1) and a plurality of second circulating oil cylinders (32), wherein the plurality of second circulating oil cylinders (32) penetrate the cavity of the second spiral water cavity (31), and one end of the second circulating oil cylinder (32) is connected to the housing inside the reducer (1) and the other end is connected to the oil cavity of the housing of the reducer (1); The first spiral water cavity (21) comprises a first annular cavity (211) and a first spiral baffle (212); the first spiral water cavity (21) forms a flow channel for spiral circulation of cooling liquid through the first annular cavity (211) and the first spiral baffle (212); a plurality of the first circulating oil cylinders (22) are evenly arranged along the circumference of the first annular cavity (211); and the first circulating oil cylinders (22) penetrate all spiral surfaces of the first spiral baffle (212); The second spiral water chamber (31) comprises a second annular cavity (311) and a second spiral partition (312); the second spiral water chamber (31) forms a flow channel for spiral circulation of lubricating oil through the second annular cavity (311) and the second spiral partition (312); a plurality of second circulating oil cylinders (32) are evenly arranged along the circumference of the second annular cavity (311); and the second circulating oil cylinders (32) penetrate all spiral surfaces of the second spiral partition (312); The first spiral water chamber (21) is provided with a first water inlet (213) at one end and a first water outlet (214) at the other end; the second spiral water chamber (31) is provided with a second water inlet (313) at one end and a second water outlet (314) at the other end; the first water outlet (214) and the second water inlet (313) are connected via a hose assembly (4).

2. A shield reducer dual cooling device according to claim 1, characterized in that: The first spiral partition plate (212) and the second spiral partition plate (312) both include N spiral surfaces, and N≥2.

3. A shield reducer dual cooling device according to claim 1, characterized in that: The first circulating oil cylinder (22) and the second circulating oil cylinder (32) are both provided in M ​​numbers, and M≥4.

4. A shield reducer dual cooling device according to claim 1, characterized in that: The first cooling device (2) and the second cooling device (3) are connected to the reducer (1) by welding.

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