Dismounting tool for parking brake screw rod and deep groove ball bearing of parking brake cylinder

Abstract

The utility model provides a parking brake screw and deep groove ball bearing dismounting tool of a parking brake cylinder, which comprises a fixed seat, an annular pressing assembly is slidably connected in the fixed seat, the annular pressing assembly is composed of two semicircular pressing blocks which are symmetrically arranged, the middle parts of the two semicircular pressing blocks are provided with annular bearing surfaces, and the annular bearing surfaces are connected with the fixed seat. And one side of the fixed seat is movably connected with a locking mechanism for clamping and fixing the two semicircular pressing blocks. The tool is simple in structure, reasonable in design and easy to operate, the deep groove ball bearing can be rapidly detached from the parking brake screw, the risk coefficient in the operation process is reduced, the safety of operators is guaranteed, and the tool is safe, efficient, time-saving and labor-saving.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of dismounting of the brake unit cylinder of subway vehicle, in particular to a parking brake screw and deep groove ball bearing dismounting tool of parking brake cylinder. BACKGROUND

[0002] The deep groove ball bearing on the parking brake screw of the tread brake unit cylinder of subway vehicle is a big overhaul must-replace part. However, the bearing is closely attached to the head end face of the parking brake screw (the gap is less than 1mm) and the diameter of the bearing is smaller than the diameter of the screw head of the brake screw, so the traditional puller and ordinary bearing dismounting tool cannot be used.

[0003] The current dismounting method involves inserting a straight screwdriver obliquely into the end face gap and then knocking the screwdriver handle with a hammer. Since the end face gap is very narrow, the screwdriver must be selected in small size, which often leads to the damage of the screwdriver. In addition, since the operator needs to stabilize the workpiece with one hand and use the hammer to knock with the other hand, the screw has no fixed support point, and the screw is easy to rotate when knocking, which increases the risk of injury. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a parking brake screw and deep groove ball bearing dismounting tool of parking brake cylinder, which is simple in structure, convenient to use, time-saving, labor-saving and safe and reliable.

[0005] The utility model provides a technical scheme: a parking brake screw and deep groove ball bearing dismounting tool of parking brake cylinder, including fixed base, the inside of fixed base is connected with annular compression assembly, annular compression assembly is composed of two symmetrical half circular compression blocks, and the middle part of two half circular compression blocks is provided with annular receiving surface, and the side of fixed base is movably connected with locking mechanism for clamping two half circular compression blocks.

[0006] Further, the fixed base includes a bottom plate and a fixed frame, the annular compression assembly is slidably connected with the fixed frame, and threaded holes are formed on both sides of the fixed frame.

[0007] Further, the fixed frame is a square frame formed by detachable assembly of transverse fixed plates and longitudinal fixed plates.

[0008] Further, the inside of the two groups of transverse fixed plates is provided with a sliding groove slidably connected with the annular compression assembly, and the threaded holes are formed in the middle part of the two groups of longitudinal fixed plates, and the transverse fixed plates and the longitudinal fixed plates are connected by fixed bolts.

[0009] Further, the bottom plate is provided with a fixing hole at each corner, and the bottom plate can be fixed on the workbench surface as needed.

[0010] Further, the locking mechanism comprises a push screw threadedly connected with the fixed seat, a rotating hand wheel is arranged on the outer side of the push screw, and the rotating hand wheel is used for driving the push screw to rotate into or rotate out of the fixed seat, so that the locking or loosening of the two semicircular compression blocks is realized.

[0011] Further, the top of each of the two semicircular compression blocks is provided with an operation screw bolt used for sliding the semicircular compression block along the sliding groove direction of the fixed seat.

[0012] The deep groove ball bearing and the parking brake screw are connected through the fixed seat and the annular compression assembly, the two semicircular compression blocks are arranged in the fixed seat, the locking mechanism is arranged on the fixed seat, and the operation screw bolt is arranged on the top of each of the two semicircular compression blocks. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the utility model;

[0014] Figure 2 is a structural schematic view of the deep groove ball bearing and the parking brake screw of the utility model;

[0015] Figure 3 is a structural schematic view of the fixed seat and the annular compression assembly of the utility model;

[0016] Figure 4 is a use state schematic view of the utility model;

[0017] In the drawing: 1 is a fixed seat, 101 is a bottom plate, 102 is a fixed frame, 1021 is a transverse fixed plate, 1022 is a longitudinal fixed plate, 103 is a threaded hole, 104 is a fixed bolt, 105 is a fixed hole, 2 is an annular compression assembly, 201 is a semicircular compression block, 202 is an annular receiving surface, 3 is a locking mechanism, 301 is a push screw, 302 is a rotating hand wheel, 4 is an operation screw bolt, 5 is a parking brake screw, and 6 is a deep groove ball bearing. DETAILED DESCRIPTION

[0018] The utility model will be further explained in connection with specific implementation manners below, wherein, the drawing is only used for example explanation, and the representation is only a schematic view, and cannot be understood as the limitation of the utility model, in order to better explain the specific implementation manner of the utility model, some components of the drawing will be omitted, enlarged or reduced, and do not represent the size of actual product, and it is understandable for those skilled in the art that some known structures and their description in the drawing can be omitted, based on the specific implementation manner in the utility model, all other specific implementation manners obtained by those skilled in the art without making creative labor are within the protection scope of the utility model.

[0019] In the description of the utility model, it needs to explain, the term "front", "back", "up", "down" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as the limitation of the utility model.

[0020] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "set with", "connection" and so on, should do broad sense, for example "connection", can be fixed connection, also can be detachable connection, or integral type connection, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0021] As Figures 1-4 The utility model discloses a kind of parking brake cylinder's parking brake screw and deep groove ball bearing dismounting tool, including fixed seat 1, annular compression assembly 2 is connected with the inside of fixed seat 1 slidingly, annular compression assembly 2 is composed of two symmetrical half-round compression blocks 201, the middle part of two half-round compression blocks 201 is provided with annular receiving surface 202, one side of fixed seat 1 is movably connected with locking mechanism 3 for locking and clamping two half-round compression blocks 201.Ring compression assembly 2 utilizes the taper surface matched with bearing chamfer, and the separation of screw and bearing is realized by pressing into bearing chamfer.

[0022] As Figure 3 Indicated, the fixed seat 1 includes bottom plate 101 and fixed frame 102, annular compression assembly 2 is slidably connected with fixed frame 102, and screw holes 103 are formed in the two sides of fixed frame 102.Specifically, the fixed frame 102 is a square frame body formed by detachable assembly of horizontal fixed plate 1021 and longitudinal fixed plate 1022.Two groups of horizontal fixed plate 1021 are provided with sliding grooves slidably connected with annular compression assembly 2 in the inside, and screw holes 103 are formed in the middle of two groups of longitudinal fixed plate 1022, and horizontal fixed plate 1021 and longitudinal fixed plate 1022 are connected by fixed bolt 104.The fixed holes 105 are formed in the four corners of the bottom plate 101, and the bottom plate 101 can be fixed on the workbench according to needs.

[0023] The locking mechanism 3 includes push screw 301 threadedly connected with fixed seat 1, and rotating hand wheel 302 is arranged on the outside of push screw 301, for driving push screw 301 to rotate into or rotate out of fixed seat 1, to realize the locking or loosening of two half-round compression blocks 201.

[0024] The top of each of the two semi-circular clamping blocks 201 is provided with an operating bolt 4 for sliding the semi-circular clamping block 201 along the slide groove direction of the fixed seat 1.

[0025] When using this utility model, such as Figure 4 As shown, place the deep groove ball bearing 6 on the parking brake screw 5 into the annular clamping assembly 2. Rotate the handwheel 302 to push the push screw 301 to push the annular clamping assembly 2 to press the mounting surface of the deep groove ball bearing. After the annular clamping assembly 2 and the deep groove ball bearing 6 are fastened, use a hammer to strike the top of the parking brake screw 5 to make the deep groove ball bearing 6 fall off the parking brake screw 5. Then, rotate the handwheel 302 in the opposite direction to make the push screw 301 retract part of the fixed seat 1. Use the operating bolt 4 to push open the corresponding semi-circular clamping block 201 to loosen the annular clamping assembly 2. Then, take out the parking brake screw 5 and the deep groove ball bearing 6 together.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A disassembly fixture for a parking brake cylinder's parking brake screw and deep groove ball bearing, characterized in that, Includes a fixed base (1), and an annular pressing assembly (2) is slidably connected inside the fixed base (1). The annular pressing assembly (2) consists of two symmetrically arranged semi-circular pressing blocks (201). An annular bearing surface (202) is provided in the middle of each of the two semi-circular pressing blocks (201). A locking mechanism (3) for locking and securing the two semi-circular pressing blocks (201) is movably connected to one side of the fixed base (1).

2. The disassembly fixture for the parking brake screw and deep groove ball bearing of the parking brake cylinder according to claim 1, characterized in that, The fixed base (1) includes a base plate (101) and a fixed frame (102). The annular pressing assembly (2) is slidably connected to the fixed frame (102). Threaded holes (103) are provided on both sides of the fixed frame (102).

3. The disassembly fixture for the parking brake screw and deep groove ball bearing of the parking brake cylinder according to claim 2, characterized in that, The fixed frame (102) is a square frame formed by detachable assembly of a transverse fixed plate (1021) and a longitudinal fixed plate (1022).

4. The disassembly fixture for the parking brake screw and deep groove ball bearing of the parking brake cylinder according to claim 3, characterized in that, The interior of the two sets of transverse fixing plates (1021) is provided with a sliding groove that is slidably connected to the annular clamping assembly (2). The threaded hole (103) is opened in the middle of the two sets of longitudinal fixing plates (1022). The transverse fixing plates (1021) and the longitudinal fixing plates (1022) are connected by fixing bolts (104).

5. The disassembly fixture for the parking brake screw and deep groove ball bearing of the parking brake cylinder according to claim 2, characterized in that, Fixing holes (105) are provided at the four corners of the base plate (101), and the base plate (101) can be fixed on the workbench as needed.

6. The disassembly fixture for the parking brake screw and deep groove ball bearing of the parking brake cylinder according to claim 1, characterized in that, The locking mechanism (3) includes a push screw (301) threadedly connected to the fixed seat (1). A rotating handwheel (302) is provided on the outside of the push screw (301) to drive the push screw (301) to rotate in or out of the fixed seat (1) so as to lock or release the two semi-circular pressing blocks (201).

7. The disassembly fixture for the parking brake screw and deep groove ball bearing of the parking brake cylinder according to claim 1, characterized in that, The top of each of the two semi-circular clamping blocks (201) is provided with an operating bolt (4) for sliding the semi-circular clamping block (201) along the groove direction of the fixed seat (1).

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