Gear box chamber oil way inner hole sealing performance detection device

Abstract

A gear box chamber oil way inner hole sealing performance detection device comprises a limiting sleeve, a limiting seat and an internal expansion mechanism arranged on the limiting seat in a sleeving mode. The limiting seat and the internal expansion mechanism extend into an inner hole of the product from the top and are limited by the limiting sleeve; and after the internal expansion mechanism is stressed and expanded, an inner hole of the product is separated into a high-position sealing cavity, a middle-position sealing cavity and a low-position sealing cavity. A limiting shaft is arranged at the top of the limiting seat; a limiting step is arranged on the outer wall of the limiting seat; the internal expansion mechanism sleeves the limiting shaft and is limited by the limiting step; a kidney-shaped limiting hole is formed in the upper portion of the limiting shaft and matched with the limiting pin. The internal expansion mechanism comprises a plurality of internal expansion assemblies arranged on the limiting shaft in a sleeving mode. Each internal expansion assembly comprises a step sleeve, a reset spring and a rubber sealing ring, wherein the reset spring and the rubber sealing ring are arranged on the step sleeve. The detection device extends into an inner hole of a product and extrudes a plurality of rubber sealing rings to enable the rubber sealing rings to expand, so that the inner hole of the product is separated into a plurality of sealing cavities, a plurality of oil ways of the product can be simultaneously detected in a separated manner through one-time detection, and the detection efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of gear box chamber production, in particular to a gear box chamber oil circuit inner hole sealing detection device. Background Art

[0002] The four oil circuits of the gearbox chamber are connected to the inner hole, among which the first oil circuit connecting port is at a high position of the inner hole, the second and third oil circuit connecting ports are both at the middle position of the inner hole, and the connecting ports of the second and third oil circuits are relatively located on both sides of the inner hole, and the fourth oil circuit connecting port is at a low position of the inner hole; the four oil circuits need to be tested for sealing during the production and manufacturing process of the gearbox chamber.

[0003] When the traditional gearbox chamber oil circuit inner hole sealing detection tool performs a sealing test on the product, the cylinder is extended and retracted to drive the sealing sleeve, and the sealing rubber head mounted on the outer end of the sealing sleeve gradually sticks to the end faces of the product at both ends and blocks the openings on the end faces of the product, making it easier to test the product for sealing. Since the elastic sealing rubber head contacts the sharp corners of the opening of the end face of the product, the sealing rubber head is easily worn, resulting in a short service life of the sealing rubber head. Frequent replacement of the sealing rubber head is time-consuming and labor-intensive, and the efficiency of product sealing detection is low. At the same time, since the traditional detection device uses a detection method of blocking the inner holes at both ends, it is impossible to isolate and detect four oil circuits at the same time, which is not conducive to leak location and has low detection efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a gear box chamber oil circuit inner hole sealing detection device to overcome the deficiencies in the prior art.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A gear box chamber oil circuit inner hole sealing detection device comprises a coaxially arranged limit sleeve, a limit seat and an inner expansion mechanism sleeved on the limit seat; the limit sleeve is fixed to the bottom of the inner hole of the product by a fastener, and an external cylinder drives the limit seat and the inner expansion mechanism to extend into the inner hole of the product from the top and be limited by the limit sleeve; the inner expansion mechanism is forced to expand and isolate the inner hole of the product into a high-position sealing cavity, a middle-position sealing cavity and a low-position sealing cavity;

[0007] The limit seat has a limit shaft integrally arranged on the top, and the outer wall of the limit seat has a limit step; the inner expansion mechanism is sleeved on the limit shaft and is limited by the limit step; a waist-shaped limit hole is arranged on the upper part of the limit shaft along the length direction of the limit shaft, and the waist-shaped limit hole cooperates with the limit pin;

[0008] The internal expansion mechanism comprises a plurality of internal expansion components sleeved on the limiting shaft, and each internal expansion component comprises a step sleeve and a return spring and a rubber seal ring arranged on the step sleeve.

[0009] Furthermore, the plurality of internal expansion components include a first internal expansion component, a second internal expansion component, a third internal expansion component and a fourth internal expansion component which are sequentially sleeved on the limiting shaft.

[0010] Furthermore, the first internal expansion component includes a first step sleeve, a first countersunk hole is provided on the side wall of the first step sleeve along the height direction of the side wall, and a first group of return springs are installed in the first countersunk hole; a first annular groove is provided at the opening of the lower end of the side wall of the first step sleeve, and a first rubber sealing ring is installed in the first annular groove, one end of the first rubber sealing ring is connected to the first annular groove, and the other end is connected to the limit step of the limit seat.

[0011] Furthermore, the second internal expansion component includes a second step sleeve, a second countersunk hole is provided on the side wall of the second step sleeve along the height direction of the side wall, and a second group of return springs are installed in the second countersunk hole; a second annular groove is provided at the opening of the lower end of the side wall of the second step sleeve, and a second rubber sealing ring is installed in the second annular groove; the recessed portion at the bottom end of the second step sleeve is coaxially matched with the protruding portion at the top end of the first step sleeve.

[0012] Furthermore, the third internal expansion component includes a third step sleeve, a third countersunk hole is provided on the side wall of the third step sleeve along the height direction of the side wall, and a third group of return springs are installed in the third countersunk hole; a third annular groove is provided at the opening at the lower end of the side wall of the third step sleeve, and a third rubber sealing ring is installed in the third annular groove; the recessed portion at the bottom end of the third step sleeve is coaxially matched with the protruding portion at the top end of the second step sleeve.

[0013] Furthermore, the fourth internal expansion component includes a fourth step sleeve, a fourth countersunk hole is provided at the bottom of the side wall of the fourth step sleeve along the height direction of the side wall, and a fourth group of return springs are installed in the fourth countersunk hole; a fourth annular groove is provided at the opening at the lower end of the side wall of the fourth step sleeve, and a fourth rubber sealing ring is installed in the fourth annular groove; the recessed portion at the bottom end of the fourth step sleeve is coaxially matched with the protruding portion at the top end of the third step sleeve.

[0014] Furthermore, the fourth step sleeve has a circular limiting hole radially arranged on the side wall, the circular limiting hole corresponds to the waist-shaped limiting hole on the side wall of the limiting seat, and the inner diameter of the circular limiting hole is adapted to the diameter of the limiting pin.

[0015] Preferably, a docking flange is also provided on the outer wall of the upper end of the fourth step sleeve.

[0016] Preferably, a limiting head is integrally provided at the bottom of the limiting seat.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1) In this case, a gearbox chamber oil circuit inner hole sealing detection device is provided, wherein the inner expansion mechanism extends into the inner hole of the product and squeezes a plurality of rubber sealing rings to expand them, thereby isolating the inner hole of the product into a plurality of sealing cavities. Multiple oil circuits of the product can be isolated and detected at the same time in one detection, which is conducive to leak location and has high detection efficiency.

[0019] 2) A gear box chamber oil circuit inner hole sealing detection device in this case has a sealing method different from that of traditional sealing detection equipment. Traditional equipment uses a sealing rubber head to seal the end face of the product's inner hole, while the sealing method in this case is to seal from the inside of the product's inner hole. The rubber sealing ring is in smooth contact with the inner wall of the inner hole, which can extend the service life of the rubber sealing ring. There is no need to frequently replace the rubber sealing ring, which effectively saves maintenance costs and effectively improves the efficiency of product sealing detection work.

[0020] In order to more clearly understand the present invention, the following will describe the preferred implementation of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 is a perspective view of the utility model;

[0023] Figure 3 It is a cross-sectional view of the utility model;

[0024] Figure 4 It is an exploded view of the utility model;

[0025] Figure 5 , Figure 6 It is a structural schematic diagram of the internal expansion component in the utility model.

[0026] Figure ID:

[0027] 1-limiting sleeve, 2-limiting seat; 21-limiting shaft, 22-limiting head, 23-limiting step, 24-waist-shaped limiting hole, 25-limiting pin; 31-first step sleeve, 32-first group of return springs, 33-first rubber seal, 311-first countersunk hole, 312-first annular groove; 41-second step sleeve, 42-second group of return springs, 43-second rubber seal, 411-second countersunk hole, 412-second annular groove; 51-third step sleeve, 52-third group of return springs, 53-third rubber seal, 511-third countersunk hole, 512-third annular groove; 61-fourth step sleeve, 62-fourth group of return springs, 63-fourth rubber seal, 611-fourth countersunk hole, 612-fourth annular groove, 613-circular limiting hole, 614-docking flange. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes, mainly to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.

[0030] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0031] See also Figure 1-6 The utility model provides a gear box chamber oil circuit inner hole sealing detection device, comprising a coaxially arranged limit sleeve 1, a limit seat 2 and an internal expansion mechanism sleeved on the limit seat 2; the limit sleeve 1 is fixed to the bottom of the product inner hole by a fastener, and an external cylinder (not shown) drives the limit seat 2 and the internal expansion mechanism to extend into the product inner hole from the top and be limited by the limit sleeve 1; after the internal expansion mechanism is expanded by force, the product inner hole is isolated into a high-position sealing chamber, a middle-position sealing chamber and a low-position sealing chamber; the three sealing chambers correspond to the first oil circuit, the second, the third oil circuit and the fourth oil circuit of the camshaft chamber respectively, and the oil circuit of the product can be tested for sealing in cooperation with an external sealing detection device (not shown).

[0032] The limit seat 2 has a limit shaft 21 integrally arranged on the top and a limit head 22 integrally arranged on the bottom, so that the outer wall of the limit seat 2 forms a limit step 23, and the internal expansion mechanism is sleeved on the limit shaft 21 and is limited by the limit step 23; a waist-shaped limit hole 24 is arranged on the upper part of the limit shaft 21 along the length direction of the limit shaft 21, and the waist-shaped limit hole 24 cooperates with the limit pin 25.

[0033] The internal expansion mechanism includes a first internal expansion component, a second internal expansion component, a third internal expansion component and a fourth internal expansion component which are sequentially sleeved on the limit shaft 21;

[0034] The first internal expansion component includes a first step sleeve 31, a first countersunk hole 311 is provided on the side wall of the first step sleeve 31 along the height direction of the side wall, and a first group of return springs 32 are installed in the first countersunk hole 311; a first annular groove 312 is provided at the opening of the lower end of the side wall of the first step sleeve 31, and a first rubber sealing ring 33 is installed in the first annular groove 312, one end of the first rubber sealing ring 33 is connected to the first annular groove 312, and the other end is connected to the limiting step 23 of the limiting seat 2.

[0035] The second internal expansion component includes a second step sleeve 41, a second countersunk hole 411 is provided on the side wall of the second step sleeve 41 along the height direction of the side wall, and a second group of return springs 42 are installed in the second countersunk hole 411; a second annular groove 412 is provided at the opening of the lower end of the side wall of the second step sleeve 41, and a second rubber sealing ring 43 is installed in the second annular groove 412; the recessed portion at the bottom end of the second step sleeve 41 is coaxially matched with the protruding portion at the top end of the first step sleeve 31.

[0036] The third internal expansion component includes a third step sleeve 51, on the side wall of the third step sleeve 51, a third countersunk hole 511 is arranged along the height direction of the side wall, and a third group of return springs 52 are installed in the third countersunk hole 511; a third annular groove 512 is arranged at the opening of the lower end of the side wall of the third step sleeve 51, and a third rubber sealing ring 53 is installed in the third annular groove 512; the recessed portion at the bottom end of the third step sleeve 51 is coaxially matched with the protruding portion at the top end of the second step sleeve 41.

[0037] The fourth internal expansion component includes a fourth step sleeve 61, a fourth countersunk hole 611 is provided at the bottom of the side wall of the fourth step sleeve 61 along the height direction of the side wall, and a fourth group of return springs 62 are installed in the fourth countersunk hole 611; a fourth annular groove 612 is provided at the opening at the lower end of the side wall of the fourth step sleeve 61, and a fourth rubber sealing ring 63 is installed in the fourth annular groove 612; the recessed portion at the bottom end of the fourth step sleeve 61 is coaxially matched with the protruding portion at the top end of the third step sleeve 51.

[0038] Further, the fourth step sleeve 61 has a circular limiting hole 613 radially arranged on the side wall, and the circular limiting hole 613 corresponds to the waist-shaped limiting hole 24 on the side wall of the limiting seat 2, and the inner diameter of the circular limiting hole 613 is adapted to the diameter of the limiting pin 25, so that the limiting pin 25 can be inserted into the circular limiting hole 613 and the waist-shaped limiting hole 24. Under the joint action of the circular limiting hole 613, the limiting pin 25 and the waist-shaped limiting hole 24, the up and down travel of the limiting seat 2 in the inner expansion mechanism is limited by the length of the waist-shaped limiting hole 24.

[0039] Furthermore, a docking flange 614 is provided on the outer wall of the upper end of the fourth step sleeve 61, and the docking flange 614 is used to dock with the output shaft of the external cylinder, so that the cylinder drives the fourth step sleeve 61, and then drives the third step sleeve 51, the second step sleeve 41 and the first step sleeve 31.

[0040] During assembly, first fix the limit sleeve 1 at the bottom end of the inner hole of the product, and then insert the first internal expansion component, the second internal expansion component, the second internal expansion component and the fourth internal expansion component into the limit shaft 21 of the limit seat 2 in sequence, so that one end of the first rubber sealing ring 33 is connected to the first step sleeve 31, and the other end is connected to the limit step 23 of the limit seat 2; one end of the second rubber sealing ring 43 is connected to the second step sleeve 41, and the other end is connected to the first step sleeve 31; one end of the third rubber sealing ring 53 is connected to the third step sleeve 51, and the other end is connected to the second step sleeve 41; one end of the fourth group of reset springs 62 is connected to the fourth step sleeve 61, and the other end is connected to the third step sleeve 51. At the same time, one end of the first group of return springs 32 is connected to the first step sleeve 31, and the other end is connected to the limit step 23 of the limit seat 2; one end of the second group of return springs 42 is connected to the second step sleeve 41, and the other end is connected to the first step sleeve 31; one end of the third group of return springs 52 is connected to the third step sleeve 51, and the other end is connected to the second step sleeve 41; one end of the fourth group of return springs 62 is connected to the fourth step sleeve 61, and the other end is connected to the third step sleeve 51.

[0041] Working principle and working process:

[0042] 1. The cylinder drives the fourth step sleeve 61, thereby driving the third step sleeve 51, the second step sleeve 41, the first step sleeve 31 and the limit seat 2 downward;

[0043] 2. When the limit seat 2 moves downward to the limit position of the limit sleeve 1 and stops, the cylinder can drive the fourth step sleeve 61, the third step sleeve 51, the second step sleeve 41 and the first step sleeve 31 to continue to move downward under the cooperation of the limit pin 25, the circular limit hole 613 and the waist-shaped limit hole 24, so that the fourth rubber seal 63, the third rubber seal 53, the second rubber seal 43 and the first rubber seal 33 are squeezed and radially expand, and at the same time, each group of reset springs is compressed;

[0044] 3. After the rubber seal expands radially, three sealing chambers are formed between the inner hole of the product and the outer wall of the device, wherein a high-position sealing chamber is formed between the fourth rubber seal 63 and the third rubber seal 53, a middle-position sealing chamber is formed between the third rubber seal 53 and the second rubber seal 43, and a low-position sealing chamber is formed between the second rubber seal 43 and the first rubber seal 33; the three sealing chambers correspond to the first oil circuit, the second third oil circuit and the fourth oil circuit of the camshaft chamber respectively, and the oil circuit of the product can be tested for sealing by cooperating with an external sealing test device.

[0045] 4. After the oil circuit sealing test of the product is completed, the external cylinder retracts, the fourth step sleeve 61, the third step sleeve 51, the second step sleeve 41, the first step sleeve 31 and the limit seat 2 are reset upward, each set of reset springs releases compression, and each rubber seal ring also returns to a non-expanded state. In this embodiment, since the elastic force of the rubber seal ring itself is limited, it is necessary to cooperate with the reset spring to reset each component.

[0046] Compared with the prior art, a gear box chamber oil circuit inner hole sealing detection device in this case has an internal expansion mechanism that extends into the inner hole of the product and squeezes multiple rubber sealing rings to make them expand, thereby isolating the inner hole of the product into multiple sealing cavities. Multiple oil circuits of the product can be isolated and detected at the same time in one detection, which is conducive to leak locating and has high detection efficiency.

[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A gear box chamber oil channel inner hole sealing detection device, characterized in that: The invention comprises a coaxially arranged limiting sleeve (1), a limiting seat (2) and an internal expansion mechanism sleeved on the limiting seat (2); the limiting sleeve (1) is fixed to the bottom of the inner hole of the product by means of a fastener, an external cylinder drives the limiting seat (2) and the internal expansion mechanism to extend into the inner hole of the product from the top and be limited by the limiting sleeve (1); after the internal expansion mechanism is expanded by force, the inner hole of the product is isolated into a high-position sealing chamber, a middle-position sealing chamber and a low-position sealing chamber; The limiting seat (2) has a limiting shaft (21) integrally arranged on its top, and the outer wall of the limiting seat (2) has a limiting step (23); the inner expansion mechanism is sleeved on the limiting shaft (21) and is limited by the limiting step (23); a waist-shaped limiting hole (24) is arranged on the upper part of the limiting shaft (21) along the length direction of the limiting shaft (21), and the waist-shaped limiting hole (24) cooperates with the limiting pin (25); The internal expansion mechanism comprises a plurality of internal expansion components sleeved on a limit shaft (21), each internal expansion component comprising a step sleeve and a return spring and a rubber seal ring arranged on the step sleeve.

2. A gear box chamber oil passage inner hole sealing detection device according to claim 1, characterized in that: The plurality of internal expansion components include a first internal expansion component, a second internal expansion component, a third internal expansion component and a fourth internal expansion component which are sequentially sleeved on the limiting shaft (21).

3. A gearbox chamber oil passage inner hole sealing detection device according to claim 2, characterized in that: The first internal expansion component comprises a first step sleeve (31), a first countersunk hole (311) is arranged on the side wall of the first step sleeve (31) along the height direction of the side wall, and a first group of return springs (32) are installed in the first countersunk hole (311); a first annular groove (312) is arranged at the opening of the lower end of the side wall of the first step sleeve (31), and a first rubber sealing ring (33) is installed in the first annular groove (312), and one end of the first rubber sealing ring (33) is connected to the first annular groove (312), and the other end is connected to the limiting step (23) of the limiting seat (2).

4. A gear box chamber oil passage inner hole sealing detection device according to claim 3, characterized in that: The second internal expansion component comprises a second step sleeve (41), a second countersunk hole (411) is arranged on the side wall of the second step sleeve (41) along the height direction of the side wall, and a second group of return springs (42) are installed in the second countersunk hole (411); a second annular groove (412) is arranged at the opening of the lower end of the side wall of the second step sleeve (41), and a second rubber sealing ring (43) is installed in the second annular groove (412); the recessed portion at the bottom end of the second step sleeve (41) is coaxially matched with the protruding portion at the top end of the first step sleeve (31).

5. A gear box chamber oil passage inner hole sealing detection device according to claim 4, characterized in that: The third internal expansion component comprises a third step sleeve (51), a third countersunk hole (511) is arranged on the side wall of the third step sleeve (51) along the height direction of the side wall, and a third group of return springs (52) are installed in the third countersunk hole (511); a third annular groove (512) is arranged at the opening of the lower end of the side wall of the third step sleeve (51), and a third rubber sealing ring (53) is installed in the third annular groove (512); the recessed portion at the bottom end of the third step sleeve (51) is coaxially matched with the protruding portion at the top end of the second step sleeve (41).

6. A gear box chamber oil channel inner hole sealing detection device according to claim 5, characterized in that: The fourth internal expansion component comprises a fourth step sleeve (61), a fourth countersunk hole (611) is arranged at the bottom of the side wall of the fourth step sleeve (61) along the height direction of the side wall, and a fourth group of return springs (62) are installed in the fourth countersunk hole (611); a fourth annular groove (612) is arranged at the opening at the lower end of the side wall of the fourth step sleeve (61), and a fourth rubber sealing ring (63) is installed in the fourth annular groove (612); the recessed portion at the bottom end of the fourth step sleeve (61) is coaxially matched with the protruding portion at the top end of the third step sleeve (51).

7. A gear box chamber oil passage inner hole sealing detection device according to claim 6, characterized in that: The fourth step sleeve (61) has a circular limiting hole (613) radially arranged on the side wall, the circular limiting hole (613) corresponds to the waist-shaped limiting hole (24) on the side wall of the limiting seat (2), and the inner diameter of the circular limiting hole (613) is adapted to the diameter of the limiting pin (25).

8. A gear box chamber oil passage inner hole sealing detection device according to claim 7, characterized in that: A docking flange (614) is also provided on the outer wall of the upper end of the fourth step sleeve (61).

9. A gear box chamber oil passage inner hole sealing detection device according to claim 7, characterized in that: A limiting head (22) is integrally provided at the bottom of the limiting seat (2).

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