Heavy-load expansion sleeve capable of being rapidly installed

Abstract

The utility model relates to the field of heavy-load expansion sleeves, in particular to a heavy-load expansion sleeve capable of being rapidly installed, which comprises an expansion sleeve main body, the oil inlet is formed in the surface of one side of the expansion sleeve body, a lubricating oil opening and an oil return opening are formed in the surface of one side of the expansion sleeve body, and an oil channel is formed in the expansion sleeve body. According to the heavy-load expansion sleeve capable of being rapidly installed, due to the arrangement of the expansion sleeve body, the oil inlet, the lubricating oil port, the oil return port, the oil duct, the oil cavity and the piston, the heavy-load expansion sleeve can be rapidly installed and disassembled even in a small control space, compared with a mechanical expansion sleeve, disassembly and assembly are easy, operation is easy, only an oil pump needs to be connected for pressurization, installation efficiency is effectively improved, and cost is reduced. The connecting sleeve assembly is connected with an external oil pump, then hydraulic oil is injected into the oil cavity from the oil channel through the oil pump, and the piston moves, so that the expansion sleeve main body, the shaft and the hub are tightly and uniformly expanded and are tightly jointed, and rapid installation is completed.

Description

Technical Field

[0001] The utility model relates to the field of heavy-load expansion sleeves, in particular to a heavy-load expansion sleeve that can be quickly installed. Background Art

[0002] Heavy-duty expansion sleeves (abbreviated as expansion sleeves) are an advanced basic component widely used in the world for mechanical connections under heavy loads. The expansion sleeve is a keyless connection device that generates pressure and friction between the containing surfaces by tightening high-strength bolts to achieve load transmission. Under the action of axial force, the inner and outer sleeves of the expansion sleeve shrink inward and expand outward, making the shaft and hub fit tightly, generating sufficient friction to transmit torque and achieve the purpose of mechanism operation.

[0003] Most of the existing heavy-duty expansion sleeves still use mechanical expansion sleeves. The installation of mechanical expansion sleeves requires tightening multiple high-strength bolts, which is not only time-consuming and labor-intensive, but also has low precision. In addition, during the installation of the mechanical expansion sleeve, if the space between the expansion sleeve and the shaft is not cleaned, scratches will occur between the contact surfaces, making disassembly very difficult, and in severe cases, even impossible to disassemble.

[0004] Therefore, it is necessary to invent a heavy-duty expansion sleeve that can be quickly installed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a heavy-duty expansion sleeve that can be quickly installed. It is connected to an external oil pump through a connecting sleeve assembly, and then the hydraulic oil is poured from the oil channel into the oil chamber through the oil pump to move the piston, so that the expansion sleeve body and the shaft and the wheel hub are tightly and evenly expanded, so that they are tightly joined, thereby completing rapid installation to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heavy-duty expansion sleeve that can be quickly installed, comprising an expansion sleeve main body;

[0007] An oil inlet is provided on one side of the expansion sleeve body, a lubricating oil port and an oil return port are provided on one side of the expansion sleeve body, an oil passage is provided inside the expansion sleeve body, an oil cavity is provided inside the expansion sleeve body, and a piston is provided inside the oil cavity;

[0008] The connecting sleeve assembly is installed inside the oil inlet, lubricating oil port and oil return port on one side of the expansion sleeve body.

[0009] Preferably, the expansion sleeve body comprises an outer sleeve and an inner sleeve, and the outer sleeve and the inner sleeve are threadedly connected by bolts.

[0010] Preferably, the connecting sleeve assembly includes a connecting pipe, an external thread, a sealing ring, and a sleeve cover. The connecting pipe is installed inside the oil inlet, the lubricating oil port, and the oil return port. External threads are provided on both sides of the outside of the connecting pipe. A sealing ring is provided on the inner outside of the connecting pipe, and a sleeve cover is installed on the outer outside of the connecting pipe.

[0011] Preferably, a sealing ring is provided between the outer sleeve and the inner sleeve, and the sealing ring is arranged in a circular shape.

[0012] Preferably, the oil passage is connected to the oil inlet, the lubricating oil port and the oil return port, and the oil passage is connected to the oil chamber.

[0013] Preferably, the oil chamber and the piston are arranged in a trapezoidal shape, and the inner dimension of the oil chamber matches the outer dimension of the piston.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] Through the arrangement of the expansion sleeve body, oil inlet, lubricating oil port, oil return port, oil channel, oil chamber and piston, it can be quickly installed and disassembled even in a small operating space. Compared with the mechanical expansion sleeve, it is simple to disassemble and assemble, easy to operate, and only needs to connect the oil pump to pressurize, which effectively improves the installation efficiency. It is connected with the external oil pump through the connecting sleeve assembly, and then the hydraulic oil is poured from the oil channel into the oil chamber through the oil pump. The piston moves, so that the expansion sleeve body and the shaft and wheel hub are tightly and evenly expanded, so that they are tightly joined, so as to complete the quick installation;

[0016] Through the arrangement of the oil inlet, lubricating oil port, oil return port and connecting sleeve assembly, the connecting pipe can be easily disassembled and the sealing can be enhanced. The external thread on the outside of one end of the connecting pipe is threadedly connected with the oil inlet, lubricating oil port and oil return port, and a sealing ring is arranged between the two to avoid leakage. The other end of the connecting pipe can be connected to the oil pump to facilitate the injection of hydraulic oil. At the same time, the sleeve cover can be sealed when not connected to prevent dust from entering the inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the connecting sleeve assembly of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the main body of the expansion sleeve of the utility model;

[0021] Figure 4 It is a schematic diagram of the oil chamber and the oil chamber structure of the utility model;

[0022] Figure 5 For the utility model Figure 2 The enlarged diagram of the structure at point A in the middle.

[0023] Description of reference numerals:

[0024] 1. Expansion sleeve body; 101. Outer sleeve; 102. Inner sleeve; 2. Oil inlet; 3. Lubricating oil port; 4. Oil return port; 5. Connecting sleeve assembly; 501. Connecting pipe; 502. External thread; 503. Sealing ring; 504. Sleeve cover; 6. Bolt; 7. Sealing ring; 8. Oil channel; 9. Oil chamber; 10. Piston. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figures 1-5 A heavy-duty expansion sleeve that can be quickly installed is shown, comprising an expansion sleeve body 1;

[0027] An oil inlet 2 is provided on one side of the expansion sleeve body 1, a lubricating oil port 3 and an oil return port 4 are provided on one side of the expansion sleeve body 1, an oil passage 8 is provided inside the expansion sleeve body 1, an oil chamber 9 is provided inside the expansion sleeve body 1, and a piston 10 is provided inside the oil chamber 9;

[0028] The connecting sleeve assembly 5 is installed inside the oil inlet 2, the lubricating oil port 3 and the oil return port 4 on one side of the expansion sleeve body 1, and is connected to the external oil pump through the connecting sleeve assembly 5. Then, the hydraulic oil is poured from the oil channel 8 into the oil chamber 9 through the oil pump, and the piston 10 moves, so that the expansion sleeve body 1 and the shaft and the wheel hub are tightly and evenly expanded, so that they are tightly joined, thereby completing the quick installation.

[0029] like Figure 1 , Figure 3 and Figure 4 As shown, the expansion sleeve body 1 includes an outer sleeve 101 and an inner sleeve 102. The outer sleeve 101 and the inner sleeve 102 are threadedly connected by bolts 6. The outer sleeve 101 and the inner sleeve 102 can be disassembled and repaired by the threaded connection between the outer sleeve 101 and the inner sleeve 102.

[0030] like Figure 1 , Figure 2 and Figure 5As shown, the connecting sleeve assembly 5 includes a connecting pipe 501, external threads 502, a sealing ring 503, and a sleeve cover 504. The connecting pipe 501 is installed inside the oil inlet 2, the lubricating oil port 3, and the oil return port 4. External threads 502 are provided on both outer sides of the connecting pipe 501. A sealing ring 503 is arranged on the outer side of the inner part of the connecting pipe 501. A sleeve cover 504 is installed on the outer side of the connecting pipe 501. The external threads 502 at one end of the connecting pipe 501 are threadedly connected to the oil inlet 2, the lubricating oil port 3, and the oil return port 4. A sealing ring 503 is arranged between them to prevent leakage. The other end of the connecting pipe 501 can be connected to an oil pump to facilitate the injection of hydraulic oil. At the same time, the sleeve cover 504 can also be used to seal when not connected to prevent dust from entering the interior.

[0031] As Figure 3 and Figure 4 shown, a sealing ring 7 is provided between the outer sleeve 101 and the inner sleeve 102. The sealing ring 7 is circularly arranged. The provision of the sealing ring 7 between the outer sleeve 101 and the inner sleeve 102 enhances the sealing performance between them.

[0032] As Figure 3 and Figure 4 shown, the oil passage 8 is connected to the oil inlet 2, the lubricating oil port 3, and the oil return port 4, and the oil passage 8 is connected to the oil cavity 9, enabling hydraulic oil or lubricating oil to be injected into the oil cavity 9 through the oil passage 8.

[0033] As Figure 3 and Figure 4 shown, the oil cavity 9 and the piston 10 are trapezoidally arranged. The internal dimensions of the oil cavity 9 match the external dimensions of the piston 10. By injecting hydraulic oil into the oil passage 8 and then into the oil cavity 9, the piston 10 is pushed to move, thus forming a tightening effect. Compared with mechanical expansion sleeves, it is simpler to disassemble and assemble and easier to operate.

[0034] The working principle of this utility model: First, the expansion sleeve main body 1 is sleeved on the shaft. Then, a sealing ring 503 is sleeved on the outside of the connecting pipe 501. Next, the connecting pipe 501 is threadedly connected to the oil inlet 2, the lubricating oil port 3, and the oil return port 4 respectively. After that, the external oil pump pipeline is connected to the outside of the other end of the connecting pipe 501. Then, hydraulic oil is injected into the oil passage 8 inside the expansion sleeve main body 1. Through the oil passage 8, it enters the oil cavity 9, thereby pushing the piston 10 inside the oil cavity 9, causing the expansion sleeve main body 1, the shaft, and the hub to expand evenly, and thus tightly joining them together, completing rapid installation. When tightly combined, the external oil pump pipeline is removed, and then the sleeve cover 504 is sleeved on one end of the connecting pipe 501. In this way, the use process of this rapidly installable heavy-duty expansion sleeve is completed.

[0035] Only some exemplary embodiments of the present utility model have been described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above-mentioned drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A heavy-duty expansion sleeve that can be quickly installed, characterized in that: It comprises a main body of a tightening sleeve (1); An oil inlet (2) is provided on one side surface of the expansion sleeve body (1); a lubricating oil port (3) and an oil return port (4) are provided on one side surface of the expansion sleeve body (1); an oil passage (8) is provided inside the expansion sleeve body (1); an oil chamber (9) is provided inside the expansion sleeve body (1); a piston (10) is provided inside the oil chamber (9); The connecting sleeve assembly (5) is installed inside the oil inlet (2), the lubricating oil port (3) and the oil return port (4) on one side of the expansion sleeve body (1).

2. A heavy-duty expansion sleeve capable of rapid installation according to claim 1, characterized in that: The expansion sleeve body (1) comprises an outer sleeve (101) and an inner sleeve (102), and the outer sleeve (101) and the inner sleeve (102) are threadedly connected via bolts (6).

3. A heavy-duty expansion sleeve capable of rapid installation according to claim 1, characterized in that: The connecting sleeve assembly (5) comprises a connecting pipe (501), an external thread (502), a sealing ring (503), and a sleeve cover (504); the connecting pipe (501) is installed inside the oil inlet (2), the lubricating oil port (3), and the oil return port (4); external threads (502) are provided on both sides of the outside of the connecting pipe (501); a sealing ring (503) is provided on the inside of the connecting pipe (501); and a sleeve cover (504) is installed on the outside of the outside of the connecting pipe (501).

4. A heavy-duty expansion sleeve capable of rapid installation according to claim 2, characterized in that: A sealing ring (7) is provided between the outer sleeve (101) and the inner sleeve (102), and the sealing ring (7) is arranged in a circular shape.

5. A heavy-duty expansion sleeve capable of rapid installation according to claim 1, characterized in that: The oil passage (8) is connected to the oil inlet (2), the lubricating oil port (3) and the oil return port (4), and the oil passage (8) is connected to the oil chamber (9).

6. A heavy-duty expansion sleeve capable of rapid installation according to claim 1, characterized in that: The oil chamber (9) and the piston (10) are arranged in a trapezoidal shape, and the internal dimensions of the oil chamber (9) match the external dimensions of the piston (10).

Images