Hydraulic connection device and hydraulic coupling

Abstract

The utility model discloses a hydraulic connecting device and hydraulic coupling, the hydraulic connecting device includes the cover and the inner cover, one side end surface of the inner cover is fixedly connected with a plurality of bolts, and the inside end surface of a plurality of the bolts is all fixedly connected with the protection piece, the top end surface of bolt is equipped with fixed hole, and the fixed hole is connected with the fixed column, and the fixed column penetrates fixed hole, and the bottom of fixed column is fixedly connected with the inner cover, one side end surface of the inner cover is equipped with a plurality of first threaded holes, and a plurality of the first threaded holes evenly distribute along the circumference of the inner cover, and a plurality of the bolt is connected with the inner cover threadedly. Compared with prior art, the utility model discloses a hydraulic connecting device and hydraulic coupling can adjust the size of the closed mounting cavity formed by the compression ring, the cover and the inner cover, facilitate the injection of hydraulic oil and the movement of the compression ring, and avoid the failure of the closed mounting cavity due to wear.

Description

Technical Field

[0001] This utility model belongs to the field of expansion sleeve technology, specifically relating to a hydraulic connection device and a hydraulic coupling. Background Technology

[0002] CN202223164591.5 discloses a hydraulic connection device and a hydraulic coupling, but its enclosed mounting cavity cannot be adjusted in size. After long-term use, due to wear of the boss, the enclosed mounting cavity becomes smaller or even disappears, causing hydraulic oil to be unable to be smoothly injected into the enclosed mounting cavity from the mounting pressure oil port, affecting the movement of the pressure ring in the cavity, and thus causing the piston structure to fail.

[0003] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a hydraulic connection device and a hydraulic coupling.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic connection device that can solve the above-mentioned problems.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows: A hydraulic connection device includes an outer sleeve and an inner sleeve. A plurality of bolts are fixedly connected to one end face of the inner sleeve. Protective components are fixedly connected to the inner end faces of the plurality of bolts. A fixing hole is opened on the top end face of the bolt. A fixing post is connected to the fixing hole. The fixing post passes through the fixing hole and is fixedly connected to the bottom of the fixing post with the inner sleeve.

[0007] In one or more embodiments of this utility model, a plurality of first threaded holes are provided on one side end face of the inner sleeve, the plurality of first threaded holes are evenly distributed along the circumference of the inner sleeve, and the plurality of bolts are threadedly connected to the inner sleeve.

[0008] In one or more embodiments of this utility model, the length of the bolt is greater than the depth of the first threaded hole.

[0009] In one or more embodiments of this utility model, the outer end face of the bolt is marked with a scale.

[0010] In one or more embodiments of this utility model, a groove is provided on one end face of the bolt-fitting pressure ring, a protective member is fixedly connected to the inner wall end face of the groove, and a bolt protrudes from one end face of the protective member.

[0011] In one or more embodiments of the present invention, the protective member includes a buffer head and a fixing part, the buffer head and the fixing part are integrally formed, and the outer end face of the fixing part is provided with a protrusion.

[0012] In one or more embodiments of this utility model, the protective component is made of rubber.

[0013] In one or more embodiments of this utility model, a plurality of second threaded holes are provided on one end face of the inner sleeve fitting bolt, and the plurality of second threaded holes are evenly distributed around the first threaded hole.

[0014] In one or more embodiments of this utility model, the bottom of the fixing post is provided with a first external thread, the second threaded hole is provided with a first internal thread that matches the first external thread, and the fixing post is threadedly connected to the inner sleeve through the fixing hole.

[0015] A hydraulic coupling includes the hydraulic connection device as described in the above embodiment.

[0016] Compared with the prior art, the hydraulic connection device and hydraulic coupling of this utility model can adjust the size of the closed mounting cavity formed by the pressure ring, outer sleeve and inner sleeve, which facilitates the injection of hydraulic oil and drives the pressure ring to move, and avoids failure of the closed mounting cavity due to wear. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a hydraulic connection device according to one embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 This is a diagram showing the usage state of a hydraulic connection device according to one embodiment of the present invention.

[0019] Explanation of key figure labels: 1-Outer sleeve, 2-Inner sleeve, 201-First threaded hole, 202-Second threaded hole, 3-Bolt, 301-Fixing hole, 302-Scale, 4-Protective component, 401-Buffer head, 402-Fixing part, 4021-Protrusion, 5-Fixing post, 6-Pressure ring, 7-Cavity, 8-Enclosed installation cavity. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0021] like Figure 1 As shown in one embodiment of the present invention, a hydraulic connection device and a hydraulic coupling are disclosed. The hydraulic connection device includes an outer sleeve 1 and an inner sleeve 2. The outer sleeve 1 is connected to the inner sleeve 2, and a cavity 7 is provided between the outer sleeve 1 and the inner sleeve 2. A pressure ring 6 is disposed in the cavity 7. The outer wall of the pressure ring 6 is fitted with the inner wall of the portion of the outer sleeve 1 located in the cavity 7 by a conical surface, and the inner wall of the pressure ring 6 is fitted with the outer wall of the portion of the inner sleeve 2 located in the cavity 7 by a cylindrical surface. The outer sleeve 1, the inner sleeve 2, and the pressure ring 6 together form a closed mounting cavity 8. When hydraulic oil is injected into the closed mounting cavity 8, the hydraulic oil pushes the pressure ring 6 to move axially, thereby connecting or disconnecting the shaft from the hub.

[0022] like Figure 1 As shown, multiple bolts 3 are fixedly connected to one end face of the inner sleeve 2. One bolt 3 can be selected for operation depending on the specific situation. Multiple first threaded holes 201 are opened on one end face of the inner sleeve 2, evenly distributed along the circumference of the inner sleeve 2. Multiple bolts 3 are threadedly connected to the inner sleeve 2. The length of the bolt 3 is greater than the depth of the first threaded hole 201, meaning the bolt 3 protrudes from one end face of the inner sleeve 2, allowing a portion of the bolt 3 to penetrate the inner sleeve 2 and contact the pressure ring 6. A scale 302 is marked on the outer end face of the bolt 3, located on the outer end face of the portion of the bolt 3 protruding from the inner sleeve 2. This facilitates user viewing and precise control of the adjustment amount. The width of the portion of the bolt 3 within the cavity 7 can be determined from the scale 302, thereby determining the size of the enclosed installation cavity 8 and reducing operational difficulty.

[0023] Specifically, the user can select one of the easy-to-operate bolts 3 according to the specific situation, adjust the size of the closed installation cavity 8, and intuitively read the length of the bolt 3 penetrating into the inner sleeve 2 through the scale 302 on the outer end face of the bolt 3, thereby accurately controlling the size of the closed installation cavity 8.

[0024] like Figure 2As shown, protective components 4 are fixedly connected to the internal end faces of multiple bolts 3. A groove is formed on one end face of the bolt 3 that fits against the pressure ring 6. The protective component 4 is fixedly connected to the inner wall of the groove. One end face of the protective component 4 protrudes from the bolt 3, ensuring that the protective component 4 contacts the pressure ring 6 before the bolt 3. The protective component 4 includes a buffer head 401 and a fixing part 402, which are integrally formed. The buffer head 401 protrudes from one end face of the bolt 3, preventing wear between the bolt 3 and the pressure ring 6 and extending the service life of the component. The outer end face of the fixing part 402 has a protrusion 4021, which matches the groove on the bottom end face of the bolt 3. It is fixed by interference fit or adhesive bonding to prevent the connection between the protective component 4 and the bolt 3 from being unstable, causing the protective component 4 to fall off the bolt 3 and affecting its use. The protective component 4 is made of rubber, which has good wear resistance and cushioning properties, preventing wear between the contact surfaces of the bolt 3 and the pressure ring 6, thus affecting the service life of both the bolt 3 and the pressure ring 6.

[0025] Furthermore, to enhance the protective effect, the buffer head 401 is evenly coated with oil-resistant and high-temperature-resistant epoxy resin or neoprene rubber special adhesive on one side of the end face of the bolt 3 to prevent hydraulic oil from seeping into the gap between the protective part 4 and the bolt 3, ensuring the sealing and stability for long-term use.

[0026] like Figures 1 to 2 As shown, the inner sleeve 2 has multiple second threaded holes 202 on one side of the bolt 3. These second threaded holes 202 are evenly distributed circumferentially around the first threaded hole 201. In this example, there are six second threaded holes 202, meaning that the bolt 3 rotates 60° from above the first second threaded hole 202 to above the next. The user can control the length of the bolt 3's insertion into the enclosed mounting cavity 8 based on the rotation angle. A fixing hole 301 is provided on the top end of the bolt 3, and a fixing post 5 is connected to the fixing hole 301. The fixing post 5 passes through the fixing hole 301, and its bottom is fixedly connected to the inner sleeve 2. A first external thread is provided on the bottom of the fixing post 5, and a first internal thread matching the first external thread is provided in the second threaded hole 202. The fixing post 5 passes through the fixing hole 301 and is threadedly connected to the inner sleeve 2, fixing the bolt 3. The bolt 3 protrudes from one side of the inner sleeve 2, preventing it from loosening during equipment operation and ensuring the stability and reliability of the overall structure.

[0027] Specifically, the user loosens the fixing post 5, removes the fixing post 5 from the inner sleeve 2, adjusts the size of the closed installation cavity 8 by using bolt 3, and after adjustment, reinserts the fixing post 5 into the fixing hole 301 and connects it to the inner sleeve 2 by thread through the second threaded hole 202, and then fixes the bolt 3.

[0028] A hydraulic coupling includes the hydraulic connection device as described in the above embodiment.

[0029] When using, such as Figure 3 When it is necessary to adjust the size of the enclosed mounting cavity 8, the user first selects the bolt 3 in an easy-to-operate position, loosens and removes the fixing post 5 that fixes it, and then screws the bolt 3 so that it moves into the inner sleeve 2 through the first threaded hole 201. According to the scale 302 on the outside of the bolt 3, screw it to the required depth to adjust the size of the enclosed mounting cavity 8. After the adjustment is completed, the fixing post 5 is reinserted into the fixing hole 301 and threaded into the inner sleeve 2 through the second threaded hole 202 to fix the bolt 3.

[0030] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic connection device, comprising an outer sleeve and an inner sleeve, characterized in that, Multiple bolts are fixedly connected to one end face of the inner sleeve, and protective components are fixedly connected to the inner end face of each bolt. A fixing hole is opened on the top end face of the bolt, and a fixing post is connected to the fixing hole. The fixing post passes through the fixing hole, and the bottom of the fixing post is fixedly connected to the inner sleeve.

2. The hydraulic connection device according to claim 1, characterized in that, The inner sleeve has multiple first threaded holes on one end face, which are evenly distributed along the circumference of the inner sleeve, and the multiple bolts are threadedly connected to the inner sleeve.

3. A hydraulic connection device according to claim 2, characterized in that, The length of the bolt is greater than the depth of the first threaded hole.

4. A hydraulic connection device according to claim 3, characterized in that, The outer end face of the bolt is marked with graduations.

5. A hydraulic connection device according to claim 2, characterized in that, A groove is provided on one end face of the bolt-fitting pressure ring, and a protective component is fixedly connected to the inner wall end face of the groove. A bolt protrudes from one end face of the protective component.

6. A hydraulic connection device according to claim 5, characterized in that, The protective component includes a buffer head and a fixing part, which are integrally formed, and the outer end face of the fixing part is provided with a protrusion.

7. A hydraulic connection device according to claim 6, characterized in that, The protective component is made of rubber.

8. A hydraulic connection device according to claim 2, characterized in that, The inner sleeve fitting bolt has multiple second threaded holes on one end face, and the multiple second threaded holes are evenly distributed around the first threaded hole.

9. A hydraulic connection device according to claim 8, characterized in that, The bottom of the fixing post is provided with a first external thread, and the second threaded hole is provided with a first internal thread that matches the first external thread. The fixing post passes through the fixing hole and is threadedly connected to the inner sleeve.

10. A hydraulic coupling, characterized in that, The hydraulic coupling includes the hydraulic connection device as described in any one of claims 1-9.

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