Tooth type hydraulic coupling structure

Abstract

The utility model relates to a coupler structure, in particular to a tooth type hydraulic coupler structure which comprises an input coupler body and an output coupler body which are symmetrically distributed and fixedly connected through a reaming bolt. Oil filters are embedded in the outer surface of the input coupling body and the outer surface of the output coupling body, each oil filter comprises a main bin body, a filter element assembly and a sealing cover, the oil filters can be used for filtering guided-in oil bodies, hydraulic oil bodies with impurities are prevented from being guided in, machine faults are prevented from being caused, and normal operation of equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to a coupling structure, in particular to a gear type hydraulic coupling structure. Background Art

[0002] The inner surface of the inner sleeve of the gear hydraulic coupling is pressed on a transmission shaft, and the inner conical surface of the outer sleeve is sleeved on the outer surface of the same taper of the inner sleeve. The installation tool is connected to the thread on the outer sleeve to make the outer sleeve generate axial tension to gradually tighten the cone surface. At the same time, hydraulic oil is injected into the oil groove between the inner and outer sleeves. Since there are sealing areas at both ends of the oil groove that do not pass oil, the outer sleeve expands as the oil pressure increases, and then the outer sleeve moves toward the large end of the cone. After reaching the designed displacement, the high-pressure oil is released, the outer sleeve presses the inner sleeve tightly, the inner sleeve presses the shaft tightly, and finally the flange sleeve is inserted to make the inner and outer teeth mesh, and the torque is transmitted through the gears.

[0003] And in the application document with publication number CN207131748U, a gear hydraulic coupling structure is mentioned. The inner sleeve in the gear hydraulic coupling structure is subjected to plasma nitriding treatment so that its surface is covered with a plasma nitriding film, which changes the surface properties. The inner and outer sleeves are resistant to friction, and will not produce burrs or seizures. It can be assembled and disassembled repeatedly for many times. Although it effectively solves the problem that the existing gear hydraulic coupling has no surface treatment on the friction surfaces of the inner and outer sleeves, and the inner and outer sleeves are prone to burrs or even seizures under high-pressure friction, causing the inner and outer sleeves or even the entire coupling to be scrapped, there are still certain defects and deficiencies that need to be improved. The specific defects and deficiencies are as follows: There is no oil filter structure inside the oil filling hole in the gear hydraulic coupling structure, and the introduced oil body cannot be filtered. The introduction of hydraulic oil with impurities will cause machine failure, which directly affects the normal operation of the equipment.

[0004] Therefore, it is necessary to design a gear type hydraulic coupling structure to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a gear type hydraulic coupling structure, which can filter the imported oil body by using an oil filter to avoid the introduction of hydraulic oil body with impurities, prevent machine failure, ensure the normal operation of the equipment, and thus solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gear type hydraulic coupling structure, comprising an input coupling body and an output coupling body which are symmetrically distributed, wherein the input coupling body and the output coupling body are fixedly connected by reaming bolts, and an oil filter is embedded and installed on the outer surfaces of the input coupling body and the output coupling body, and the oil filter comprises a main compartment, a filter element assembly and a sealing cover;

[0008] As a preferred solution of the utility model, the filter element assembly is embedded and installed inside the main warehouse body, the sealing cover is fixedly installed on the top surface of the main warehouse body, an oil hopper is installed through the bottom end of the main warehouse body, and a hydraulic introduction nozzle is installed through the center of the top surface of the sealing cover;

[0009] As a preferred solution of the utility model, a processing oil chamber is opened inside the main warehouse body, a pressure cover is fixedly installed at the center of the bottom surface of the sealing cover, and the sealing cover and the input coupling body and the output coupling body are fixedly connected by screws;

[0010] As a preferred solution of the utility model, the input coupling body and the output coupling body are both composed of an inner gear ring, an outer gear sleeve, a flange assembly, a hydraulic oil groove and a sealing assembly. The inner gear ring is sleeved on the outer surface of the outer gear sleeve, and the flange assembly is fixedly mounted on an end surface of the inner gear ring away from the mounting shaft. The hydraulic oil groove and the sealing assembly are located between the inner gear ring and the outer gear sleeve.

[0011] As a preferred solution of the utility model, the inner wall of the inner gear ring and the outer surface of the outer gear sleeve are respectively provided with inner conical tooth surfaces and outer conical tooth surfaces near the hydraulic oil groove, and the inner conical tooth surfaces and the outer conical tooth surfaces are adapted to each other, and the flange assembly is provided with an oil filling hole near the hydraulic oil groove, and the oil filter is located inside the oil filling hole;

[0012] As a preferred solution of the utility model, a shaft mounting hole is provided inside the outer gear sleeve, and shaft pin limiting grooves are provided at both ends of the inner wall of the shaft mounting hole;

[0013] Beneficial effect: In view of the problem that the oil filling hole in the existing gear hydraulic coupling structure has no oil filter structure inside, and the introduced oil cannot be filtered, and the introduction of hydraulic oil with impurities will cause machine failure, directly affecting the normal operation of the equipment, the utility model can use the filter element assembly to filter the oil inside the main compartment before the hydraulic oil enters the oil tank, and then the hydraulic oil after filtration is highly clean and free of impurities, thereby avoiding the introduction of hydraulic oil with impurities, thereby preventing machine failure and ensuring the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional external structure diagram of the overall top view of the utility model;

[0015] Figure 2 This is a three-dimensional disassembled structural diagram of the oil filter in the utility model;

[0016] Figure 3 This is the overall front view of the internal structure of the utility model;

[0017] Figure 4 It is a partial enlarged structural diagram of A in the utility model;

[0018] In the figure: 1. Input coupling body; 2. Output coupling body; 121. Inner gear ring; 1211. Inner conical tooth surface; 122. Outer gear sleeve; 1221. Outer conical tooth surface; 1222. Shaft mounting hole; 1223. Shaft latch stopper groove; 123. Flange assembly; 1231. Oil filling hole; 124. Hydraulic oil tank; 125. Sealing assembly; 3. Reaming bolt; 4. Oil filter; 41. Main compartment; 411. Oil treatment chamber; 42. Filter element assembly; 43. Sealing cover; 431. Pressure cover; 432. Screw fastener; 44. Oil hopper; 45. Hydraulic inlet nozzle. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A gear type hydraulic coupling structure, comprising an input coupling body 1 and an output coupling body 2 which are symmetrically distributed, characterized in that: the input coupling body 1 and the output coupling body 2 are fixedly connected by a reaming bolt 3, and an oil filter 4 is embedded and installed on the outer surface of the input coupling body 1 and the output coupling body 2, and the oil filter 4 includes a main compartment body 41, a filter element assembly 42 and a sealing cover 43,

[0025] Specifically, the filter element assembly 42 is embedded and installed inside the main warehouse body 41, and the sealing cover 43 is fixedly installed on the top surface of the main warehouse body 41. An oil hopper 44 is installed through the bottom end of the main warehouse body 41, and a hydraulic introduction nozzle 45 is installed through the center of the top surface of the sealing cover 43. The hydraulic oil pipe is fixedly connected to the hydraulic introduction nozzle 45, and oil is injected. At this time, the hydraulic oil enters the inside of the main warehouse body 41 through the hydraulic introduction nozzle 45, and the oil is filtered by the filter element assembly 42 at the same time. The oil after filtering is continuously input into the inside of the hydraulic oil tank through the oil hopper 44, and the filter element assembly 42 is used to filter the oil inside the main warehouse body 41 before the hydraulic oil enters the oil tank, so that the hydraulic oil after filtering is clean and free of impurities, thereby avoiding the introduction of hydraulic oil with impurities, thereby preventing machine failure and ensuring the normal operation of the equipment;

[0026] Preferably, a processing oil chamber 411 is provided inside the main chamber body 41, a pressure cover 431 is fixedly installed at the center of the bottom surface of the sealing cover 43, and the sealing cover 43 and the input coupling body 1 and the output coupling body 2 are fixedly connected by screws 432. The filter element assembly 42 can be limited by the provided pressure cover 431, and after the sealing cover 43 and the input coupling body 1 and the output coupling body 2 are fixed by the provided screws 432, the stability and reliability of the overall structure during operation can be ensured;

[0027] Preferably, the input coupling body 1 and the output coupling body 2 are both composed of an inner gear ring 121, an outer gear sleeve 122, a flange assembly 123, a hydraulic oil groove 124 and a sealing assembly 125. The inner gear ring 121 is sleeved on the outer surface of the outer gear sleeve 122, the flange assembly 123 is fixedly mounted on an end surface of the inner gear ring 121 away from the mounting shaft, and the hydraulic oil groove 124 and the sealing assembly 125 are located between the inner gear ring 121 and the outer gear sleeve 122; the inner wall of the inner gear ring 121 and the outer surface of the outer gear sleeve 122 are respectively provided with an inner conical tooth surface 1211 and an outer conical tooth surface 1221 near the hydraulic oil groove 124, and the inner conical tooth surface 1211 and the outer conical tooth surface 1221 is adapted, and an oil filling hole 1231 is opened near the hydraulic oil groove 124 of the flange assembly 123, and the oil filter 4 is located inside the oil filling hole 1231. As the oil pressure of the hydraulic oil body entering the hydraulic oil groove continuously increases, the inner gear ring 121 can be expanded, and then the inner gear ring 121 moves toward the large end of the cone of the outer conical tooth surface 1221. After reaching the designed displacement, the high-pressure oil is released, and the inner gear ring 121 presses the outer gear sleeve 122 tightly, and the outer gear sleeve 122 presses the shaft. Finally, the flange assembly 123 is fixedly connected by the reaming bolt 3, and the inner and outer teeth are meshed. At the same time, the torque is transmitted through the gears, thereby ensuring that the torque transmission of the transmission system is stable and reliable;

[0028] Preferably, a shaft mounting hole 1222 is formed through the interior of the outer gear sleeve 122, and shaft latch limiting grooves 1223 are formed at both ends of the inner wall of the shaft mounting hole 1222. The shaft latch limiting grooves 1223 are combined with the latch to facilitate quick assembly of the shaft, and at the same time have a limiting function to ensure the structural stability between the shaft and the coupling;

[0029] In summary, the utility model utilizes the oil filter to filter the imported oil, avoids the introduction of hydraulic oil with impurities, prevents machine failure, and ensures the normal operation of the equipment.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gear type hydraulic coupling structure, comprising an input coupling body (1) and an output coupling body (2) which are symmetrically distributed, characterized in that: The input coupling body (1) and the output coupling body (2) are fixedly connected by means of reaming bolts (3); an oil filter (4) is embedded and installed on the outer surfaces of the input coupling body (1) and the output coupling body (2); the oil filter (4) comprises a main chamber body (41), a filter element assembly (42) and a sealing cover (43).

2. A gear type hydraulic coupling structure according to claim 1, characterized in that: The filter element assembly (42) is embedded in the interior of the main bin body (41), the sealing cover (43) is fixedly mounted on the top surface of the main bin body (41), an oil hopper (44) is installed through the bottom end of the main bin body (41), and a hydraulic introduction nozzle (45) is installed through the center of the top surface of the sealing cover (43).

3. A gear type hydraulic coupling structure according to claim 2, characterized in that: The main chamber (41) is provided with an oil treatment chamber (411) inside, a pressure cover (431) is fixedly installed at the center of the bottom surface of the sealing cover (43), and the sealing cover (43) and the input coupling body (1) and the output coupling body (2) are fixedly connected by screw fasteners (432).

4. A gear type hydraulic coupling structure according to claim 1, characterized in that: The input coupling body (1) and the output coupling body (2) are both composed of an inner gear ring (121), an outer gear sleeve (122), a flange assembly (123), a hydraulic oil groove (124) and a sealing assembly (125); the inner gear ring (121) is sleeved on the outer surface of the outer gear sleeve (122); the flange assembly (123) is fixedly mounted on an end surface of the inner gear ring (121) away from the mounting shaft; and the hydraulic oil groove (124) and the sealing assembly (125) are located between the inner gear ring (121) and the outer gear sleeve (122).

5. A gear type hydraulic coupling structure according to claim 4, characterized in that: An inner conical tooth surface (1211) and an outer conical tooth surface (1221) are respectively provided on the inner wall of the inner gear ring (121) and the outer surface of the outer gear sleeve (122) near the hydraulic oil groove (124), and the inner conical tooth surface (1211) and the outer conical tooth surface (1221) are matched with each other. An oil filling hole (1231) is provided on the flange assembly (123) near the hydraulic oil groove (124), and the oil filter (4) is located inside the oil filling hole (1231).

6. A gear type hydraulic coupling structure according to claim 5, characterized in that: A shaft mounting hole (1222) is provided through the interior of the outer gear sleeve (122), and shaft pin limiting grooves (1223) are provided at both ends of the inner wall of the shaft mounting hole (1222).

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