Cover closing device

Abstract

The utility model relates to the technical field of passenger and freight trains, in particular to a cover closing device, which is arranged at the end part of a front cover on a bearing, is used for fixing the bearing on a train axle, and comprises an annular connecting plate, a movable plate and a fixed plate, the annular connecting plate is arranged on the end face of the front cover in an attached mode, a positioning unit connected with the front cover is arranged on the annular connecting plate, a backing ring corresponding to a screw hole in the front cover is further arranged on the annular connecting plate, and a fixing groove coaxial with the screw hole in the front cover and used for fixing a bolt is formed in the movable plate. The transmission assembly comprises a driving unit and a transmission unit. The cover closing device can be matched with the number of the screw holes in the end face of the front cover through the positioning unit and the transmission assembly, the cover closing device can be rapidly positioned and installed, the corresponding bolts are synchronously screwed into the corresponding screw holes to be fixed under the driving of external acting force, rapid and accurate positioning of the multiple bolts is guaranteed, and the cover closing device is convenient to use. The operation is simple; and the assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to passenger and freight train technical field, concretely relates to a cover closing device. BACKGROUND

[0002] On passenger and freight train or railway freight car, often assemble bearing with the bogie of train on the both ends of train axle and fix.

[0003] But at present in the process of installing train axle component, in order to ensure the fixation and sealing function between axle component and car body, bolt fixation front cover is used at bearing end, but the current front cover fixation mode often adopts external tool to tighten bolt successively and fix, and assembly efficiency is low.

[0004] The above content is only used to assist understanding the technical scheme of the utility model and does not represent admitting that the above content is the closest prior art. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the above-mentioned insufficient, provides a cover closing device.

[0006] In order to solve the above-mentioned technical problem, the utility model adopts the following technical scheme: a cover closing device is arranged on the end of front cover of bearing and is used for fixing bearing on train axle, and the cover closing device includes annular connecting plate, movable plate, fixed plate;

[0007] The annular connecting plate is attached on the end face of front cover and is provided with the positioning unit connected with front cover, and the annular connecting plate is also provided with the grommet corresponding to the screw hole on front cover, and the movable plate is provided with the fixed groove coaxial with the screw hole on front cover and used for fixing bolt.

[0008] Transmission assembly includes the drive unit and transmission unit distributed on both sides of movable plate, the drive unit is used for driving movable plate to move to the direction of annular connecting plate, and transmission unit is used for driving each bolt to rotate synchronously while movable plate moves.

[0009] Further, the positioning unit includes a plurality of positioning grooves arranged on the annular connecting plate and positioning protrusions arranged on the end face of the front cover and corresponding to each positioning groove, and the positioning protrusions are provided with fixing pins extending to the outside of the annular connecting plate on the side of the positioning grooves.

[0010] Further, the annular connecting plate is provided with a guide rod and a lead screw, the guide rod passes through the movable plate and is in sliding fit with the movable plate, the lead screw passes through the movable plate and is in screw fit with the movable plate, the lead screw is in rotary fit with the annular connecting plate, and rotating the lead screw can drive the movable plate to reciprocate between the fixed plate and the annular connecting plate.

[0011] Further, the driving unit comprises a driving gear located between the movable plate and the fixed plate and arranged on the lead screw, and a driven gear engaged with the driving gear, an end surface of the driven gear being provided with a column penetrating the center of the movable plate.

[0012] Further, the transmission unit comprises a first transmission gear arranged at the bottom end of the column, and a second transmission gear arranged on the bolt and horizontally engaged with the first transmission gear.

[0013] Further, the inner groove top surface of the fixed groove is rotationally provided with a magnetic block magnetically fixed with the bolt.

[0014] Further, one side of the grommet is provided with a notch for transmission connection of the first transmission gear and the second transmission gear.

[0015] Compared with the prior art, the utility model has the beneficial effects that: the positioning unit and the transmission assembly are arranged, the number of the front cover end surface screw holes is matched, the cover closing device is quickly positioned and installed, under the driving of external force, the corresponding bolts are screwed into the corresponding screw holes at the same time, the quick and accurate positioning of the bolts is ensured, the operation is simple, the assembly efficiency is improved, the annular connecting plate in the cover closing device can be separated after assembly, the annular connecting plate and the grommet are used, the contact area of the bolt connection part is increased, the load of each bolt can be effectively dispersed, the load of a single bolt is reduced, and the stability of the connection part is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of this application form a part hereof, serve to provide further understanding of the present application, and together with the description of the present application, serve to explain the present application. In the drawings:

[0017] Figure 1 It is a perspective view of the whole from one viewing angle of an embodiment of the present application;

[0018] Figure 2 It is a perspective view of the whole from another viewing angle of an embodiment of the present application; Figure 1 It is an enlarged structural schematic view of A in the middle;

[0019] Figure 3 It is a perspective view of the whole from another viewing angle of an embodiment of the present application;

[0020] Figure 4 It is a connection structure schematic view of the fixed bolt on the front cover in an embodiment of the present application;

[0021] Figure 5The utility model discloses a whole application in the train axle of one embodiment's perspective three -dimensional structure diagram of view angle;

[0022] Figure 6 The utility model discloses a whole application in the train axle of another perspective three -dimensional structure diagram of one embodiment.

[0023] In the drawing: 100, bearing;101, front cover;200, train axle;1, annular connecting plate;2, movable plate;3, fixed plate;4, positioning unit;41, positioning groove;42, positioning lug;43, fixed pin;5, grommet;6, fixed groove;61, magnetic block;7, drive unit;71, driving gear;72, driven gear;73, stand;8, transmission unit;81, first transmission gear;82, second transmission gear;9, guide rod;10, lead screw. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. The embodiments in the application and the features in the embodiments can be combined mutually without conflict. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] As Figures 1-6 The utility model discloses a closing device sets up on the end of front cover 101 of bearing 100 and is used for fixing bearing 100 on train axle 200, the closing device includes annular connecting plate 1, movable plate 2, fixed plate 3;

[0026] The annular connecting plate 1 is attached to the end face of the front cover 101 and has a positioning unit 4 connected to the front cover 101, and a grommet 5 corresponding to the screw hole on the front cover 101 is also provided on the annular connecting plate 1, and a fixed groove 6 coaxial with the screw hole on the front cover 101 and used for fixing the bolt is provided on the movable plate 2;

[0027] The transmission assembly includes a drive unit 7 and a transmission unit 8 distributed on both sides of the movable plate 2, the drive unit 7 is used for driving the movable plate 2 to move towards the annular connecting plate 1, and the transmission unit 8 is used for driving the bolts to rotate synchronously while the movable plate 2 moves.

[0028] In the embodiment, the positioning unit 4 is used to quickly position the end surface of the front cover 101, so that the cover closing device is in place, then the corresponding size of the bolt is fixed in the fixed groove 6, and under the power transmission of the transmission assembly, the movable plate 2 fixed with the bolt is moved between the annular connecting plate 1 and the fixed plate 3, and the bolt fixed on the movable plate 2 is screwed into the corresponding screw hole on the front cover 101 to complete the assembly, which ensures the quick and accurate positioning of the bolts, is simple to operate and improves the assembly efficiency.

[0029] In an embodiment, the positioning unit 4 comprises a plurality of positioning grooves 41 arranged on the annular connecting plate 1 and a positioning protrusion 42 arranged on the end surface of the front cover 101 and corresponding to each of the positioning grooves 41, and the side of the positioning protrusion 42 corresponding to the positioning groove 41 is provided with a fixing pin 43 extending to the outside of the annular connecting plate 1. In this way, by arranging a plurality of positioning grooves 41 on the annular connecting plate 1 and welding a positioning protrusion 42 on the end surface of the front cover 101, the positioning groove 41 and the positioning protrusion 42 can be correspondingly inserted, and then the relative position of the positioning groove 41 and the positioning protrusion 42 is fixed by the fixing pin 43, which ensures the quick positioning of the cover closing device on the end surface of the front cover 101, and further ensures the quick and accurate positioning of the bolts to be installed.

[0030] In an embodiment, the annular connecting plate 1 is provided with a guide rod 9 and a lead screw 10, the guide rod 9 passes through the movable plate 2 and is in sliding fit with the movable plate 2, and the lead screw 10 passes through the movable plate 2 and is in screw fit with the movable plate 2, the lead screw 10 is in rotating fit with the annular connecting plate 1, and rotating the lead screw 10 can drive the movable plate 2 to reciprocate between the fixed plate 3 and the annular connecting plate 1. In this way, when the lead screw 10 is rotated by an external force, the movable plate 2 fitted on the outer wall is driven to move under the limiting guidance of the guide rod 9, and since the fixed groove 6 is arranged on the movable plate 2, the movable plate 2 can simultaneously drive each bolt to displace.

[0031] It should be noted that the lead screw 10 can be driven to rotate by a motor, and of course, the lead screw 10 can be manually driven to rotate.

[0032] In an embodiment, the driving unit 7 comprises a driving gear 71 located between the movable plate 2 and the fixed plate 3 and arranged on the lead screw 10, and a driven gear 72 in mesh with the driving gear 71, and the end surface of the driven gear 72 is provided with a stand 73 passing through the center of the movable plate 2. In this way, by sleeving the driving gear 71 fixed on the lead screw 10 and the driven gear 72 horizontally meshed on the side of the driving gear 71, the rotating force can be transmitted to the stand 73 fixed on the end surface of the driven gear 72 through the meshing of the driving gear 71 and the driven gear 72 during the rotating operation of the lead screw 10.

[0033] In an embodiment, the transmission unit 8 comprises a first transmission gear 81 arranged at the bottom end of the column 73, and a second transmission gear 82 arranged on the bolt and horizontally engaged with the first transmission gear 81. In this way, by arranging the first transmission gear 81 at the bottom end of the column 73 through the end surface of the movable plate 2 and welding and fixing it, and arranging the second transmission gear 82 on the bolt and fixedly sleeving and engaging with the first transmission gear 81, when the column 73 receives external rotating force, the first transmission gear 81 welded at the bottom end of the column 73 will rotate, and since the first transmission gear 81 is engaged with a corresponding number of second transmission gears 82 fixedly sleeving and fixed on the bolts, the force can be transmitted to the corresponding bolts and drive them to rotate, realizing the screwing operation of the bolts, thereby completing the fixing of the bolts in the screw holes on the end surface of the front cover 101.

[0034] In an embodiment, the inner groove top surface of the fixing groove 6 is rotatably arranged with a magnetic block 61 magnetically fixed with the bolt. In this way, by arranging the magnetic block 61 rotatably installed on the inner groove top surface of the fixing groove 6, the bolt can be magnetically fixed, so that the bolt is prevented from falling off during assembly.

[0035] In an embodiment, one side of the grommet 5 is provided with a notch for transmission connection between the first transmission gear 81 and the second transmission gear 82. In this way, by leaving the notch on one side of the grommet 5, the first transmission gear 81 and the second transmission gear 82 are smoothly connected, achieving the effect of meshing transmission.

[0036] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0037] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0038] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B scheme. In addition, "several" means more than two. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of such technical solutions does not exist, nor is it within the protection scope required by the present application.

Claims

1. A cover closing device, which is arranged on the end of a front cover (101) of a bearing (100) and is used for fixing the bearing (100) on a train axle (200), characterized in that: The cover closing device comprises a ring-shaped connecting plate (1), a movable plate (2), and a fixed plate (3); The ring-shaped connecting plate (1) is arranged on the end surface of the front cover (101) and is provided with a positioning unit (4) connected with the front cover (101); the ring-shaped connecting plate (1) is further provided with a grommet (5) corresponding to the screw hole on the front cover (101); the movable plate (2) is provided with a fixing groove (6) coaxial with the screw hole on the front cover (101) and used for fixing the bolt; The transmission assembly comprises a driving unit (7) and a transmission unit (8) distributed on both sides of the movable plate (2); the driving unit (7) is used for driving the movable plate (2) to move towards the ring-shaped connecting plate (1); the transmission unit (8) is used for driving the bolts to rotate synchronously while the movable plate (2) moves.

2. The lid closing device according to claim 1, characterized in that: The positioning unit (4) comprises a plurality of positioning grooves (41) arranged on the ring-shaped connecting plate (1) and a positioning protrusion (42) arranged on the end surface of the front cover (101) and corresponding to each positioning groove (41); the positioning protrusion (42) is provided with a fixing pin (43) extending to the outside of the ring-shaped connecting plate (1) on the side of the corresponding positioning groove (41).

3. The lid closing device according to claim 2, characterized in that: The ring-shaped connecting plate (1) is provided with a guide rod (9) and a lead screw (10); the guide rod (9) passes through the movable plate (2) and is in sliding fit with the movable plate (2); the lead screw (10) passes through the movable plate (2) and is in screw fit with the movable plate (2); the lead screw (10) is in rotational fit with the ring-shaped connecting plate (1); rotating the lead screw (10) can drive the movable plate (2) to reciprocate between the fixed plate (3) and the ring-shaped connecting plate (1).

4. The lid closing device according to claim 3, characterized in that: The driving unit (7) comprises a driving gear (71) arranged between the movable plate (2) and the fixed plate (3) and on the lead screw (10), and a driven gear (72) in meshing connection with the driving gear (71); the end surface of the driven gear (72) is provided with a stand (73) passing through the center of the movable plate (2).

5. The lid closing device according to claim 4, characterized in that: The transmission unit (8) comprises a first transmission gear (81) arranged at the bottom end of the stand (73) and a second transmission gear (82) arranged on the bolt and in horizontal meshing connection with the first transmission gear (81).

6. The lid closing device according to claim 1, characterized in that: The inner groove top surface of the fixing groove (6) is rotatably provided with a magnetic block (61) magnetically fixed with the bolt.

7. The lid closing device according to claim 5, characterized in that: One side of the grommet (5) is provided with a notch for transmission connection between the first transmission gear (81) and the second transmission gear (82).

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