Fixed type non-pulling wheel lathe inner axle box clamp

Abstract

The utility model relates to the technical field of machine tool clamps, and provides a fixed non-pulling wheel lathe inner axle box clamp which comprises a pressing plate clamped in a preset T-shaped groove of a side pressing seat of a non-pulling wheel lathe. The base is connected with the pressing plate through screws, and the clamp is fixedly connected to the side pressing seat; the connecting seat is rotatably mounted on the outer side surface of the base; the connecting screw penetrates through the connecting base to be connected with the inner axle box. The clamp is fixed on the side pressing seat through the screws, so that the clamp is fixed on the underfloor wheel rotary bed, a gap is eliminated, and the strength is improved; the connecting base is installed in a rotatable mode, and adaptability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool fixtures, in particular to a fixed axle box fixture for a non-underfloor wheel lathe. Background Art

[0002] The axle boxes of wheelsets in rail transit vehicles can be clearly divided into two categories: inner axle boxes and outer axle boxes according to their design position and functional characteristics. These two types of axle boxes play a vital role in supporting wheels, transmitting traction, and bearing various loads during train operation. In particular, when the inner axle box wheelsets are regularly turned and repaired, the accuracy and safety of this process are particularly critical.

[0003] At present, the wheel set tread boring and repairing equipment used in domestic rail transit vehicles generally adopts the method of fixing the outer axle box when clamping the wheel set. At present, there are still models without outer axle boxes and only inner axle boxes at home and abroad. It is a technical problem to be solved to bore and repair the wheelset of the inner axle box model on the existing wheel set lathe. During the boring and repair process, the friction wheel of the boring machine will act on the wheelset accurately and lift it to the predetermined position by applying an upward force. This process ensures that the wheelset can be separated from direct contact with the track, creating conditions for subsequent processing operations. At the same time, in order to maintain the stability and force balance of the wheelset during the processing, the lathe bed must take action synchronously. Specifically, the bed will use a special clamping fixture to firmly grasp the inner axle box part of the train wheelset and apply a downward pulling force. This pulling force and the upward force provided by the friction wheel form a pair of balancing forces, which can effectively prevent any accidental movement or shaking of the wheelset during the processing process and ensure the processing accuracy. Therefore, specially made clamping fixtures are essential for wheelset turning and repairing. Utility Model Content

[0004] In view of the technical problems in the background technology, the utility model provides a fixed axle box fixture for a non-underfloor wheel lathe, and the technical solution adopted is:

[0005] A fixed type inner axle box fixture of an underfloor wheel lathe, comprising:

[0006] The pressure plate is clamped in the T-slot preset on the side pressure seat of the underfloor wheel lathe;

[0007] The base is connected to the pressure plate by screws, and the clamp is fixedly connected to the side pressure seat;

[0008] The connecting seat is rotatably mounted on the outer side of the base;

[0009] The connecting screw passes through the connecting seat and connects to the inner shaft box.

[0010] The base is provided with connecting lugs, and the connecting lugs are provided with pin holes. The connecting seat is set in an F shape and can be clamped with the connecting lugs. The head of the connecting seat is provided with a through mounting hole;

[0011] The rotatable connection mode of the connecting seat includes but is not limited to: setting a pin, the pin passes through the pin hole and the mounting hole, mounting the connecting seat on the base, and can rotate relative to the base; or other mounting methods that can hinge the base and the connecting seat.

[0012] Or a bracket is provided on one side of the base, a through hole is provided on the bracket, the connecting seat is set in an F shape and can be clamped with the bracket, a shaft passes through the head of the connecting seat and the through hole, and both sides of the shaft are fixed by bearings, and the bearings are fixed on the head of the connecting seat by retaining rings;

[0013] Furthermore, the connecting seat rotates relative to the base to a horizontal state or a vertical state.

[0014] Furthermore, the fixture further includes a limiting device for limiting the rotation angle of the connecting seat.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] 1) For the pressing plate and the base, the fixture is fixed on the side pressing seat by screws, so that the fixture is fixed on the wheel drop lathe, eliminating the gap and improving the strength.

[0017] 2) The connecting seat is installed in a rotatable manner, with strong adaptability, which can save space and adapt to different types of inner axle boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of Embodiment 1 of a fixture for the inner axle box of a fixed-type wheel drop lathe disclosed by the present utility model;

[0019] Figure 2 It is a schematic working state diagram of a fixture for the inner axle box of a fixed-type wheel drop lathe disclosed by the present utility model;

[0020] Figure 3 It is a schematic structural diagram of Embodiment 2 of a fixture for the inner axle box of a fixed-type wheel drop lathe disclosed by the present utility model;

[0021] Figure 4 It is a schematic cross-sectional structural diagram of Embodiment 2 of a fixture for the inner axle box of a fixed-type wheel drop lathe disclosed by the present utility model;

[0022] Reference numerals: 1, pressing plate; 2, base; 3, pin; 4, connecting seat; 5, connecting screw; 6, shaft; 7, bearing; 8, retaining ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1: As Figure 1 , Figure 2 shown, the present utility model discloses an inner axle box fixture for a non-drop wheel turning lathe, which includes a pressing plate 1, a base 2, a pin 3, a connecting seat 4, and a connecting screw 5.

[0025] Preferably, the pressing plate 1 is placed in a preset T-shaped groove of the side pressing seat of the non-drop wheel turning lathe; the base 2 is connected to the pressing plate 1 by screws, and the entire fixture is fixedly connected to the side pressing seat;

[0026] Preferably, the pin 3 passes through the mounting holes of the base 2 and the connecting seat 4 to mount the connecting seat on the base 2 and can rotate relative to the base 2;

[0027] Preferably, the connecting screw 5 passes through the connecting seat 4 to connect with the inner axle box.

[0028] Working principle: Before the wheel set enters the non-drop wheel turning lathe, the connecting seat 4 rotates to the horizontal state. After the wheel set enters the non-drop wheel turning lathe, the connecting seat 4 rotates to the vertical state. At the same time, the connecting screw 5 passes through the connecting seat 4 and is connected to the threaded hole on the inner axle box and tightened, playing a role in fixing the wheel set. After the wheel set turning and repairing work is completed, the connecting screw 5 is screwed out, and then the connecting seat 4 is adjusted from the vertical state to the horizontal state.

[0029] Embodiment 2: As Figure 3 , Figure 4 shown, the present utility model provides another inner axle box fixture for a non-drop wheel turning lathe. A bracket is provided on one side of the base 2, a through hole is provided on the bracket, the connecting seat 4 is set in an F shape and can be clamped with the bracket, a shaft passes through the head of the connecting seat 4 and the through hole, and both sides of the shaft are fixed by bearings. The bearings are fixed to the head of the connecting seat 4 by retaining rings.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping fixture for the inner axle box of a wheel-removing lathe, characterized in that, Comprising: A pressing plate (1), clamped in a preset T-shaped groove of a side pressing seat of a wheel-removing lathe; A base (2), connected to the pressing plate (1) by screws to fixedly connect the fixture to the side pressing seat; A connecting seat (4), rotatably installed on the outer side surface of the base (2); A connecting screw (5), passing through the connecting seat (4) and connecting to an inner axle box.

2. The fixture for the inner axle box of a wheel-removing lathe according to claim 1, wherein A connecting ear is provided on the base (2), a pin hole is provided on the connecting ear, the connecting seat (4) is configured in an F shape and can be clamped with the connecting ear, and a through mounting hole is provided at the head of the connecting seat (4); It further includes a pin (3), the pin (3) passes through the pin hole and the mounting hole to install the connecting seat (4) on the base (2) and can rotate relative to the base (2).

3. The fixture for the inner axle box of a wheel-removing lathe according to claim 1, wherein A bracket is provided on one side of the base (2), a through hole is provided on the bracket, the connecting seat (4) is configured in an F shape and can be clamped with the bracket, a shaft (6) passes through the head of the connecting seat (4) and the through hole, and both sides of the shaft (6) are fixed by bearings (7), and the bearings (7) are fixed to the head of the connecting seat (4) by retaining rings (8).

4. The in-axle box fixture of the wheel-removing lathe according to any one of claims 1-3, characterized in that, The connecting seat (4) rotates relative to the base (2) to a horizontal state and a vertical state.

5. The in-axle box fixture of the wheel-removing lathe according to any one of claims 1-3, characterized in that, The fixture further includes an adjustable limiting device for limiting the rotation angle of the connecting seat (4).

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