Disassembling device for f8 air distribution valve

Abstract

The utility model provides a kind of dismounting device for F8 type air distribution valve, including the bottom plate being fixedly arranged on pedestal, further including the mounting seat being fixedly arranged on bottom plate, the pressure rod being liftablely arranged in the position above mounting seat, lower mechanism for driving pressure rod lifting is provided on mounting seat;Limiting slot for installing screw cover is provided on mounting seat, one end of pressure rod and the valve body in screw cover are detachably abutted, the other end of pressure rod is connected with lower mechanism, the outside of pressure rod is provided with clamping mechanism for clamping circlip, clamping mechanism and the upper edge of screw cover are detachably contacted.The utility model provides a kind of dismounting device for F8 type air distribution valve, one hand lower mechanism drives pressure rod to descend, while the other hand is released by operating rotary handle, so that clamping mechanism is installed to the installation slot in screw cover inside by being clamped and closed spring claw, to complete the installation of valve piece, the installation and dismounting of valve piece are convenient and fast, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of valve installation technology, specifically to a disassembly and assembly device for an F8 type air distribution valve. Background Technology

[0002] The F8 type air distribution valve is an important component of the railway passenger car braking system, controlling functions such as air filling, releasing, braking, and pressure holding. The main valve section consists of a main valve, air filling valve, pressure limiting valve, auxiliary air cylinder, air filling check valve, partial pressure reducing valve, and conversion cover plate. The F8 type air distribution valve itself comprises three parts: the main valve, auxiliary valve, and intermediate body. See the schematic diagram of the vent valve installation structure for details. Figure 7 , Figure 8 The screw cap contains a spring and a vent valve body (hereinafter referred to as the valve body). The valve body is limited by a retaining ring in the mounting groove on the inner edge of the screw cap. When the train brakes suddenly, the pressure difference pushes the valve body downward to overcome the spring force and open the vent valve. At this time, the pressurized air in the train pipe is discharged to the atmosphere through the vent valve. After the pressurized air in the auxiliary chamber is discharged, the spring in the vent valve pushes the valve body to reset and close the vent valve. When installing the vent valve, due to the large spring force, one operator often needs to use a pressure rod to press the valve body down to overcome the spring force into the screw cap, while another operator uses pliers to clamp and compress the retaining ring to install it in the mounting groove of the screw cap. The two operators work together to complete the installation of the vent valve. The disassembly steps are the reverse of the installation steps. The basic structure and installation method of the auxiliary valve and the local reduction valve are the same as those of the vent valve.

[0003] However, the existing disassembly and assembly methods of the valve components in the F8 type air distribution valve are not only time-consuming, labor-intensive, and inefficient due to the elastic force of the spring and snap ring, but also have poor safety and reliability. This solution addresses this technical problem. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a disassembly and assembly device for an F8 type air distribution valve. The valve is positioned by the limiting groove of the mounting base. One hand presses down on the mechanism to lower the pressure rod, thereby allowing the valve body to overcome the spring force and descend into the valve. At the same time, the other hand operates the rotating handle to release the clamping mechanism and install the clamped spring clips into the mounting groove inside the screw cap, thus completing the installation of the valve. No multiple people are required to cooperate, and the installation and disassembly of the valve are convenient, quick, safe and reliable.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an assembly and disassembly device for an F8 type air distribution valve, including a base plate fixedly mounted on a pedestal, a mounting seat fixedly mounted on the base plate, and a pressure rod that can be raised and lowered above the mounting seat. The mounting seat is provided with a pressing mechanism for driving the pressure rod to rise and fall.

[0006] The mounting base is provided with a limiting groove for installing the screw cap. One end of the pressure rod is detachably abutted against the valve body in the screw cap, and the other end of the pressure rod is connected to the pressing mechanism. A clamping mechanism for clamping the snap ring is provided on the outside of the pressure rod, and the clamping mechanism is detachably in contact with the upper edge of the screw cap.

[0007] The clamping mechanism includes a mounting cylinder fixedly sleeved on the outside of the pressure rod, a sliding sleeve slidably disposed on the lower outer side of the mounting cylinder, an operating sleeve rotatably disposed on the upper outer side of the mounting cylinder, and a plurality of snap ring claws arrayed at the bottom end of the mounting cylinder. The snap ring claws are oscillatingly disposed at the bottom end of the mounting cylinder. One end of each of the snap ring claws is detachably abutting against one end of the sliding sleeve, and the other end of the snap ring claws is provided with a limiting groove for clamping snap rings.

[0008] The outer side of the sliding sleeve is provided with an external thread, and the inner side of the operating sleeve is provided with an internal thread. The operating sleeve is threadedly connected to the sliding sleeve.

[0009] A tension spring is provided between the snap ring clamp and the mounting cylinder. One end of the tension spring is connected to the bottom side of the mounting cylinder, and the other end of the tension spring is connected to the snap ring clamp.

[0010] The outer side of the mounting cylinder is provided with a sliding groove, and the inner side of the sliding sleeve is provided with a protrusion, which is slidably disposed in the sliding groove.

[0011] The bottom edge of the mounting cylinder is provided with a plurality of protrusions, and the plurality of protrusions are detachably abutted against the top side of the screw cap.

[0012] A bearing is provided between the operating sleeve and the mounting cylinder, and a rotating handle is provided on the outer side of the operating sleeve.

[0013] The pressing mechanism includes a vertical support mounted on the base plate, a frame mounted on the support, a connecting rod slidably mounted on the frame, a large gear rotatably mounted inside the frame, a small gear meshing with the large gear, and an operating rod whose one end is fixedly connected to the axle of the small gear, with the other end of the operating rod being a free end.

[0014] The side of the connecting rod is provided with a rack that meshes with the large gear, and the connecting rod is connected to the large gear through the rack.

[0015] The top side of the frame is provided with a guide rod parallel to the connecting rod, and a connecting block is fixedly provided on the top side of the connecting rod. The guide rod slides through the connecting block, and a damping bushing is provided between the guide rod and the connecting block.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The valve is positioned by the limiting groove of the mounting seat. One hand presses down the mechanism to drive the pressure rod down, so that the valve body overcomes the spring force and falls into the valve. At the same time, the other hand operates the rotating handle to release the clamping mechanism and install the clamped spring clip into the mounting groove in the screw cover, thus completing the installation of the valve. No multiple people are required to cooperate. The installation and disassembly of the valve is convenient, quick and safe.

[0018] (2) The snap ring is clamped by multiple snap ring jaws closing at the same time. Compared with clamping with pliers, the snap ring clamping is safer and more reliable. When the pressure rod presses down on the valve body, the boss not only plays a positioning role, but also prevents the valve body from being displaced and falling out of the screw cover when it is pressed down. The installation and disassembly of the valve parts are safer and more reliable.

[0019] (3) The cooperation between the guide rod and the connecting block makes the lifting and lowering of the connecting rod more stable, thereby making the installation and disassembly of the valve more stable and reliable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the mounting base of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the clamping mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the clamping state of the snap ring gripper in the clamping mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the combined structure of the clamping mechanism and the valve of this utility model;

[0025] Figure 6 This is a schematic diagram of the internal structure of the pressing mechanism of this utility model;

[0026] Figure 7 This is an exploded view of the vent valve in the F8 type air distribution valve.

[0027] Figure 8 This is a schematic diagram of the external structure of the vent valve in the F8 type air distribution valve.

[0028] In the diagram: 1. Base plate; 2. Mounting seat; 21. Limiting groove; 3. Pressure rod; 4. Pressing mechanism; 41. Vertical support; 42. Box frame; 43. Connecting rod; 431. Rack; 44. Large gear; 45. Small gear; 46. Operating lever; 47. Guide rod; 48. Connecting block; 5. Clamping mechanism; 51. Mounting cylinder; 511. Slide groove; 512. Boss; 52. Sliding sleeve; 521. Protrusion; 53. Operating sleeve; 54. Snap ring gripper; 541. Limiting groove; 55. Tension spring; 56. Bearing; 57. Rotating handle; 6. Valve; 61. Screw cap; 611. Mounting groove; 62. Spring; 63. Valve body; 64. Snap ring. Detailed Implementation

[0029] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0030] See Figures 1-8 The F8 type air distribution valve disassembly and assembly device includes a base plate 1 fixedly mounted on a platform, a mounting base 2 fixedly mounted on the base plate 1, and a pressure rod 3 that can be raised and lowered above the mounting base 2. The mounting base 2 is provided with a pressing mechanism 4 for driving the pressure rod 3 to rise and fall.

[0031] The mounting base 2 is provided with a limiting groove for installing the screw cap 61. One end of the pressure rod 3 is detachably abutted against the valve body 63 in the screw cap 61, and the other end of the pressure rod 3 is connected to the pressing mechanism 4. A clamping mechanism 5 for clamping the snap ring 64 is provided on the outside of the pressure rod 3. The clamping mechanism 5 is detachably in contact with the upper edge of the screw cap 61.

[0032] The clamping mechanism 5 includes a mounting cylinder 51 fixedly sleeved on the outside of the pressure rod 3, a sliding sleeve 52 slidably disposed on the lower outer side of the mounting cylinder 51, an operating sleeve 53 rotatably disposed on the upper outer side of the mounting cylinder 51, and a plurality of snap ring claws 54 arrayed at the bottom end of the mounting cylinder 51. The snap ring claws 54 are oscillatingly disposed at the bottom end of the mounting cylinder 51. One end of each snap ring claw 54 is detachably abutting against one end of the sliding sleeve 52. The other end of the snap ring claw 54 is provided with a limiting groove for clamping snap rings 64.

[0033] The outer side of the sliding sleeve 52 is provided with external threads, and the inner side of the operating sleeve 53 is provided with internal threads. The operating sleeve 53 is threadedly connected to the sliding sleeve 52.

[0034] A tension spring 55 is provided between the snap ring clamp 54 and the mounting cylinder 51. One end of the tension spring 55 is connected to the bottom side of the mounting cylinder 51, and the other end of the tension spring 55 is connected to the snap ring clamp 54.

[0035] The outer side of the mounting cylinder 51 is provided with a sliding groove 511, and the inner side of the sliding sleeve 52 is provided with a protrusion 521, which is slidably disposed in the sliding groove 511.

[0036] The bottom edge of the mounting cylinder 51 is provided with a plurality of protrusions 512, which can be separably abutted against the top side of the screw cap 61.

[0037] A bearing 56 is provided between the operating sleeve 53 and the mounting cylinder 51, and a rotating handle 57 is provided on the outside of the operating sleeve 53.

[0038] The pressing mechanism 4 includes a vertical support 41 mounted on the base plate 1, a box frame 42 mounted on the vertical support 41, a connecting rod 43 mounted vertically and slidably on the box frame 42, a large gear 44 rotatably mounted inside the box frame 42, a small gear 45 meshing with the large gear 44, and an operating rod 46 with one end fixedly connected to the axle of the small gear 45, the other end of the operating rod 46 being a free end;

[0039] The side of the connecting rod 43 is provided with a rack 431 that meshes with the large gear 44, and the connecting rod 43 is connected to the large gear 44 through the rack 431.

[0040] A guide rod 47 parallel to the connecting rod 43 is provided on the top side of the frame 42. A connecting block 48 is fixedly provided on the top side of the connecting rod 43. The guide rod 47 slides through the connecting block 48. There is a certain damping between the connecting block 48 and the guide rod 47. A damping bushing, specifically a rubber bushing, is provided between the guide rod 47 and the connecting block 48 to increase the friction between the guide rod 47 and the connecting block 48, so as to prevent the connecting rod 43 from falling freely. Thus, the connecting rod 43 is suspended at a set height on the frame 42. The rising and falling of the connecting rod 43 can only be achieved by manually swinging the operating rod 46. A damping bushing is provided between the guide rod 47 and the connecting block 48.

[0041] The specific working process of this utility model:

[0042] In use, first turn the rotating handle 57. The rotating handle 57 drives the operating sleeve 53 to rotate along the bearing 56 on the outside of the mounting cylinder 51. Since the operating sleeve 53 is threadedly connected to the sliding sleeve 52, the protrusion 521 of the sliding sleeve 52 slides upward along the sliding groove 511 of the mounting cylinder 51. The snap ring pawl 54 swings under the tension of the tension spring 55. The snap ring pawl 54 expands outward, which expands the limiting groove of several snap ring pawls 54. The snap ring 64 is placed in the limiting groove. Then, the rotating handle 57 is operated in the opposite direction. The sliding sleeve 52 descends. The bottom end of the sliding sleeve 52 descends and contacts one end of the snap ring pawl 54. The sliding sleeve 52 overcomes the tension of the tension spring 55 and drives the snap ring pawl 54 to close together and compress the snap ring 64 to a size smaller than the inner diameter of the valve 6.

[0043] The operator presses the operating lever 46 with one hand, which drives the small gear 45 to rotate. The small gear 45 drives the large gear 44 to rotate. The large gear 44 drives the connecting rod 43 to descend through the rack 431. The connecting rod 43 drives the mounting cylinder 51 of the clamping mechanism 5 to descend through the pressure rod 3. The front end of the pressure rod 3 overcomes the elastic force of the spring 62 and presses the valve body 63 into the screw cap 61. When the mounting cylinder 51 continues to descend until the bottom boss 512 contacts the top side of the slot of the screw cap 61, the snap ring 64 is in the mounting groove 611 of the screw cap 61. At this time, the operator keeps pressing down on the operating lever 46 and rotates the operating handle 57 with the other hand, so that the sliding sleeve 52 rises and separates from the snap ring pawl 54. At this time, the snap ring 64 expands and drives the snap ring pawl 54 to swing. The snap ring 64 is embedded in the mounting groove 611. Continue to rotate the handle 57. Under the action of the tension spring 55, the snap ring pawl 54 completely separates from the snap ring 64.

[0044] Rotate the operating lever 46 in the opposite direction, and the pressure rod 3 will rise and separate from the valve body 63 through the connecting rod 43. At the same time, the screw cap 61 of the clamping mechanism 5 will separate, and the installation of the valve 6 will be completed.

[0045] The disassembly process of valve 6 is the reverse of the installation process. The installation and disassembly methods of auxiliary valves, local reduction valves, and other valves are the same as those of the vent valve in this embodiment, and will not be described in detail here.

[0046] The valve 6 is positioned by the limiting groove of the mounting base 2. One hand presses down the mechanism 4 to drive the pressure rod 3 down, so that the valve body 63 overcomes the elastic force of the spring 62 and falls into the valve 6. At the same time, the other hand operates the rotating handle 57 to release the clamping mechanism 5 and install the clamped spring claw 54 into the mounting groove 611 in the screw cover 61, thus completing the installation of the valve 6. No multiple people are required to cooperate. The installation and disassembly of the valve 6 is convenient, quick and safe.

[0047] The snap ring 64 is clamped by multiple snap ring jaws 54 closing together. Compared with clamping with pliers, the clamping of snap ring 64 is safer and more reliable. When the pressure rod 3 presses down on the valve body 63, the boss 512 not only plays a positioning role, but also prevents the valve body 63 from being misaligned and dislodged from the screw cap 61 when it is pressed down. The installation and disassembly of valve 6 is safer and more reliable.

[0048] The cooperation between the guide rod 47 and the connecting block 48 makes the lifting and lowering of the connecting rod 43 more stable, thereby making the installation and disassembly of the valve 6 more secure and reliable.

[0049] Technical features not described in detail in this solution are based on conventional operations and general understanding of those skilled in the art, and are therefore not elaborated upon here. Technical features not described in this utility model can be implemented using existing technology, and will not be repeated here. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

Claims

1. An assembly / disassembly device for an F8 type air distribution valve, comprising a base plate (1) fixedly mounted on a pedestal, characterized in that, It also includes a mounting base (2) fixedly mounted on the base plate (1) and a pressure rod (3) that can be raised and lowered above the mounting base (2). The mounting base (2) is provided with a pressing mechanism (4) for driving the pressure rod (3) to rise and fall. The mounting base (2) is provided with a limiting groove for installing the screw cap (61). One end of the pressure rod (3) is detachably abutted against the valve body (63) in the screw cap (61). The other end of the pressure rod (3) is connected to the pressing mechanism (4). A clamping mechanism (5) for clamping the snap ring (64) is provided on the outside of the pressure rod (3). The clamping mechanism (5) is detachably in contact with the upper edge of the screw cap (61).

2. The disassembly and assembly device for the F8 type air distribution valve according to claim 1, characterized in that, The clamping mechanism (5) includes a mounting cylinder (51) fixedly sleeved on the outside of the pressure rod (3), a sliding sleeve (52) slidably disposed on the lower outer side of the mounting cylinder (51), an operating sleeve (53) rotatably disposed on the upper outer side of the mounting cylinder (51), and a plurality of snap ring claws (54) arrayed at the bottom end of the mounting cylinder (51). The snap ring claws (54) are oscillatingly disposed at the bottom end of the mounting cylinder (51). One end of each of the snap ring claws (54) is detachably abutting against one end of the sliding sleeve (52). The other end of the snap ring claws (54) is provided with a limiting groove for clamping snap rings (64). The outer side of the sliding sleeve (52) is provided with an external thread, and the inner side of the operating sleeve (53) is provided with an internal thread. The operating sleeve (53) is threadedly connected to the sliding sleeve (52).

3. The disassembly and assembly device for the F8 type air distribution valve according to claim 2, characterized in that, A tension spring (55) is provided between the snap ring clamp (54) and the mounting cylinder (51). One end of the tension spring (55) is connected to the bottom side of the mounting cylinder (51), and the other end of the tension spring (55) is connected to the snap ring clamp (54).

4. The disassembly and assembly device for the F8 type air distribution valve according to claim 3, characterized in that, The outer side of the mounting cylinder (51) is provided with a sliding groove (511), and the inner side of the sliding sleeve (52) is provided with a protrusion (521). The protrusion (521) is slidably disposed in the sliding groove (511).

5. The disassembly and assembly device for the F8 type air distribution valve according to claim 4, characterized in that, The bottom edge array of the mounting cylinder (51) is provided with a plurality of bosses (512), and the plurality of bosses (512) are detachably abutted against the top side of the screw cap (61).

6. The disassembly and assembly device for the F8 type air distribution valve according to claim 5, characterized in that, A bearing (56) is provided between the operating sleeve (53) and the mounting cylinder (51), and a rotating handle (57) is provided on the outside of the operating sleeve (53).

7. The disassembly and assembly device for the F8 type air distribution valve according to claim 1, characterized in that, The pressing mechanism (4) includes a vertical support (41) mounted on the base plate (1), a box frame (42) mounted on the vertical support (41), a connecting rod (43) mounted vertically and slidably on the box frame (42), a large gear (44) rotatably mounted inside the box frame (42), a small gear (45) meshing with the large gear (44), and an operating rod (46) with one end fixedly connected to the axle of the small gear (45). The other end of the operating rod (46) is a free end. The side of the connecting rod (43) is provided with a rack (431) that meshes with the large gear (44), and the connecting rod (43) is connected to the large gear (44) through the rack (431).

8. The disassembly and assembly device for the F8 type air distribution valve according to claim 7, characterized in that, The top side of the frame (42) is provided with a guide rod (47) parallel to the connecting rod (43), and a connecting block (48) is fixedly provided on the top side of the connecting rod (43). The guide rod (47) slides through the connecting block (48), and a damping bushing is provided between the guide rod (47) and the connecting block (48).

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