Rotary table hydraulic double-end-face brake

Abstract

The hydraulic double-end-face brake comprises an L-shaped fixing plate, a lower braking vane and an upper braking vane, wherein the L-shaped fixing plate, the lower braking vane and the upper braking vane are installed between a rotary table base and a rotary table rotary disc of a rotary table. The L-shaped fixing plate is mounted at the bottom of the turntable through bolts, and the lower braking vane and the upper braking vane are mounted above the state base through bolts; a lower oil groove is formed in the top of the lower braking vane, an upper oil groove is formed in the bottom of the upper braking vane, the space between the lower oil groove and the upper oil groove is a hydraulic oil cavity, and the rotary table base is provided with a hydraulic pump for injecting hydraulic oil into the hydraulic oil cavity; when hydraulic pressure is increased, the hydraulic oil cavity is expanded, the edge of the upper braking vane is bent upwards to make contact with the rotary table rotary disc, the edge of the lower braking vane is bent downwards to make contact with the L-shaped fixing plate, and the L-shaped fixing plate is bent downwards to make contact with the rotary table base. According to the hydraulic double-end-face brake of the rotary table, accurate and reliable braking of the rotary table can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of turntable brakes, and in particular relates to a turntable hydraulic double-end surface brake. Background Art

[0002] In the prior art, the hydraulic double-end brake system of the turntable is widely used in the field of mechanical processing, especially in situations where precise positioning and stopping are required. The traditional brake structure usually uses a thin brake pad, and the piston is pushed by a cylinder or an oil cylinder to make the brake pad contact with the static surface to generate friction, thereby achieving the purpose of braking. However, this design has some shortcomings. First, the thin brake pad may produce torsional deformation when it is under load. This deformation will affect the positioning accuracy of the turntable, thereby reducing the processing accuracy. In addition, the fitting surface between the piston and the brake pad is large, but due to the cumulative error between the two, the actual contact is not completely tight, resulting in the actual braking force being less than the theoretical value. Furthermore, the deformation of the brake pad during braking will consume part of the cylinder force and affect the braking effect. Finally, since the brake pad will deform repeatedly during work, its service life is limited and needs to be replaced regularly. Summary of the invention

[0003] In order to solve the above problems in the prior art, the present invention proposes a turntable hydraulic double-end surface brake, which can achieve accurate and reliable braking of the turntable.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a hydraulic double-end brake for a turntable, comprising an L-shaped fixing plate and a bidirectional brake plate; the L-shaped fixing plate is a disc with an L-shaped cross-section, the L-shaped fixing plate comprises a mounting portion and an inner extension portion, the mounting portion of the L-shaped fixing plate is mounted on the bottom of the turntable turntable by bolts, the inner extension portion is located at the bottom of the mounting portion, there is a gap between the bottom surface of the L-shaped fixing plate and the top surface of the turntable base, the bidirectional brake plate is mounted above the turntable base, and the edge of the bidirectional brake plate is located above the inner extension portion;

[0005] The bidirectional brake plate is provided with a hydraulic oil chamber, and the turntable base is provided with a hydraulic pump. The hydraulic pump injects hydraulic oil into the hydraulic oil chamber. When the oil pressure in the hydraulic oil chamber increases, the bidirectional brake plate deforms in both the upward and downward directions, pressing against the bottom surface of the turntable turntable upward and the top surface of the inner extension downward. The inner extension is pressed and deforms downward to press against the top of the turntable base. The bidirectional brake plate expands and deforms in both directions up and down along the axial direction, and contacts the turntable turntable and the turntable base at the same time to brake, thereby increasing the contact surface, improving the braking torque and reducing wear.

[0006] Furthermore, the bidirectional brake plate is composed of a lower brake plate and an upper brake plate, both of which are disc-shaped; a lower oil groove is provided on the top of the lower brake plate, and an upper oil groove is provided on the bottom of the upper brake plate, and the space between the lower oil groove and the upper oil groove is the hydraulic oil chamber; when the hydraulic pressure increases, the hydraulic oil chamber is expanded, the edge of the upper brake plate is bent and deformed upward and contacts the turntable, and the edge of the lower brake plate is bent and deformed downward and contacts the L-shaped fixing plate, and the L-shaped fixing plate is bent and deformed downward under pressure and contacts the turntable base. The lower brake plate and the upper brake plate are disc-shaped, in synchronous contact, and are evenly stressed, so as to avoid deformation caused by uneven stress and affect the turntable accuracy.

[0007] Furthermore, the middle parts of the lower brake plate and the upper brake plate are each provided with a shaft hole for the shaft of the turntable turntable to pass through, and the lower brake plate and the upper brake plate are each provided with a plurality of bolt holes around the shaft hole, and the turntable base is provided with threaded holes corresponding to the bolt holes, and bolt holes for bolts to pass through the upper brake plate and the lower brake plate are provided, and the ends of the bolts are tightened into the threaded holes, and the bolts fix the upper brake plate and the lower brake plate on the turntable base.

[0008] Furthermore, the edge of the lower brake plate is provided with an upward extension, and the inner side of the extension is in contact with the side of the upper brake plate, thereby blocking the side of the upper brake plate, extending the contact area, and preventing the hydraulic oil from leaking out.

[0009] Furthermore, the bottom of the upper brake plate and the contact surface of the lower brake plate are provided with a first annular groove, the contact surface of the side of the upper brake plate and the upper extension is provided with a second annular groove, and the first annular groove and the second annular groove are both provided with a sealing ring 7. The sealing ring 7 can prevent hydraulic oil from leaking from the gap.

[0010] Furthermore, the lower brake plate is provided with a first oil hole, the upper brake plate is provided with a second oil hole, the first oil hole and the second oil hole are concentric, the upper brake plate is provided with a connecting hole connecting the hydraulic oil chamber and the second oil hole, the bottom of the first oil hole is connected to an oil injection pipe, and the oil injection pipe is connected to the hydraulic pump.

[0011] The beneficial effects of the turntable hydraulic double-end brake of the present invention are as follows: improving positioning accuracy, by adopting the structural design of the L-shaped fixing plate, the lower brake plate and the upper brake plate, the turntable can achieve more stable and accurate positioning when braking, avoiding the problem of affecting the turntable accuracy due to the deformation of the brake pad; enhancing the braking force, the design of the hydraulic oil chamber allows the braking force to be adjusted by the pressure of the hydraulic oil, thereby providing sufficient braking force to ensure that the turntable can stop quickly and effectively when running at high speed; structural stability, the design of the L-shaped fixing plate avoids direct contact with the turntable base, reduces the wear caused by friction, and at the same time ensures the stability and durability of the structure; simple maintenance, the disc-shaped design of the lower brake plate and the upper brake plate, and the design The through hole arranged in the lower brake plate makes the replacement and maintenance of the brake plate more convenient and reduces the maintenance cost; the sealing performance is good, and the sealing rings arranged in the first ring groove and the second ring groove effectively prevent the leakage of hydraulic oil, thereby ensuring the sealing and reliability of the brake system; the oil circuit design is reasonable, and the concentric oil holes of the lower brake plate and the upper brake plate and the connecting hole design of the upper brake plate enable the hydraulic oil to flow smoothly inside the brake plate, thereby improving the response speed and efficiency of the brake system; in summary, the turntable hydraulic double-end surface brake structure design of the present invention not only improves the braking performance and positioning accuracy of the turntable, but also has a stable structure and easy maintenance, and has good sealing performance and oil circuit design, thereby meeting the high precision and high reliability requirements of the turntable brake system in the field of mechanical processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A cross-sectional view of a hydraulic double-end brake for a turntable according to the present invention;

[0013] Figure 2 The present invention is a schematic structural diagram of a connecting hole of a hydraulic double-end brake of a turntable.

[0014] Among them, 1-turntable base, 2-turntable turntable, 21-rotating shaft, 3-L-shaped fixed plate, 4-bidirectional brake plate, 41-lower brake plate, 411-lower oil groove, 412-upper extension, 413-first oil hole, 42-upper brake plate, 421-upper oil groove, 422-first annular groove, 423-second annular groove, 424-second oil hole, 425-connecting hole, 5-hydraulic oil chamber, 6-sealing ring. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] like Figure 1-2As shown, the present invention is a turntable hydraulic double-end brake, comprising an L-shaped fixing plate 3 and a bidirectional brake plate 4; the L-shaped fixing plate 3 is a disc with an L-shaped cross-section, the L-shaped fixing plate 3 comprises a mounting portion 31 and an inner extension portion 32, the mounting portion 31 of the L-shaped fixing plate 3 is mounted on the bottom of the turntable turntable 2 by bolts, the inner extension portion 32 is located at the bottom of the mounting portion 31, there is a gap between the bottom surface of the L-shaped fixing plate 3 and the top surface of the turntable base 1, the bidirectional brake plate 4 is mounted above the turntable base 1, and the edge of the bidirectional brake plate 4 is located above the inner extension portion 32;

[0017] The bidirectional brake plate 4 is provided with a hydraulic oil chamber 5, and the turntable base 1 is provided with a hydraulic pump, and the hydraulic pump injects hydraulic oil into the hydraulic oil chamber 5. When the oil pressure in the hydraulic oil chamber 5 increases, the bidirectional brake plate 4 deforms in both the upward and downward directions, and presses against the bottom surface of the turntable turntable 2 upward, and presses against the top surface of the inner extension 32 downward. The inner extension 32 is pressed and deforms downward to press against the top of the turntable base 1. The bidirectional brake plate 4 expands and deforms in both directions up and down along the axial direction, and contacts the turntable turntable 2 and the turntable base 1 at the same time to brake, thereby increasing the contact surface, improving the braking torque and reducing wear.

[0018] Furthermore, the bidirectional brake plate 4 is composed of a lower brake plate 41 and an upper brake plate 42, both of which are disc-shaped; a lower oil groove 411 is provided on the top of the lower brake plate 41, and an upper oil groove 421 is provided on the bottom of the upper brake plate 42, and the space between the lower oil groove 411 and the upper oil groove 421 is the hydraulic oil chamber 5; when the hydraulic pressure increases, the hydraulic oil chamber 5 is expanded, the edge of the upper brake plate 42 is bent and deformed upward and contacts the turntable turntable 2, and the edge of the lower brake plate 41 is bent and deformed downward and contacts the L-shaped fixing plate 3, and the L-shaped fixing plate 3 is bent and deformed downward under pressure and contacts the turntable base 1. The lower brake plate 41 and the upper brake plate 42 are disc-shaped, contact synchronously, and are evenly stressed, so as to avoid deformation caused by uneven stress and affect the turntable accuracy.

[0019] Furthermore, the middle parts of the lower brake plate 41 and the upper brake plate 42 are provided with a shaft hole for the shaft 21 of the turntable turntable 2 to pass through, and the lower brake plate 41 and the upper brake plate 42 are provided with a plurality of bolt holes around the shaft hole, and the turntable base 1 is provided with threaded holes corresponding to the bolt holes, and bolt holes for bolts to pass through the upper brake plate 42 and the lower brake plate 41 are provided, and the ends of the bolts are tightened into the threaded holes, and the bolts fix the upper brake plate 42 and the lower brake plate 41 on the turntable base 1.

[0020] Furthermore, the edge of the lower brake plate 41 is provided with an upward extension 412, and the inner side of the extension 42 is in contact with the side of the upper brake plate 42, blocking the side of the upper brake plate 42, extending the contact area, and preventing the hydraulic oil from leaking.

[0021] Furthermore, the bottom of the upper brake plate 42 and the contact surface of the lower brake plate 41 are provided with a first annular groove 422, the side of the upper brake plate 42 and the contact surface of the upper extension 412 are provided with a second annular groove 423, and the first annular groove 422 and the second annular groove 423 are both provided with a sealing ring 7. The sealing ring 7 can prevent the hydraulic oil from leaking from the gap.

[0022] Furthermore, the lower brake plate 41 is provided with a first oil hole 413, and the upper brake plate 42 is provided with a second oil hole 424. The first oil hole 413 and the second oil hole 424 are concentric. The upper brake plate 42 is provided with a connecting hole 425 connecting the hydraulic oil chamber 5 and the second oil hole 424. The bottom of the first oil hole 413 is connected to an oil injection pipe, and the oil injection pipe is connected to the hydraulic pump.

[0023] The beneficial effects of the turntable hydraulic double-end brake of the present invention are as follows: improving positioning accuracy, by adopting the structural design of the L-shaped fixing plate, the lower brake plate and the upper brake plate, the turntable can achieve more stable and accurate positioning when braking, avoiding the problem of affecting the turntable accuracy due to the deformation of the brake pad; enhancing the braking force, the design of the hydraulic oil chamber allows the braking force to be adjusted by the pressure of the hydraulic oil, thereby providing sufficient braking force to ensure that the turntable can stop quickly and effectively when running at high speed; structural stability, the design of the L-shaped fixing plate avoids direct contact with the turntable base, reduces the wear caused by friction, and at the same time ensures the stability and durability of the structure; simple maintenance, the disc-shaped design of the lower brake plate and the upper brake plate, and the design The through hole arranged in the lower brake plate makes the replacement and maintenance of the brake plate more convenient and reduces the maintenance cost; the sealing performance is good, and the sealing rings arranged in the first ring groove and the second ring groove effectively prevent the leakage of hydraulic oil, thereby ensuring the sealing and reliability of the brake system; the oil circuit design is reasonable, and the concentric oil holes of the lower brake plate and the upper brake plate and the connecting hole design of the upper brake plate enable the hydraulic oil to flow smoothly inside the brake plate, thereby improving the response speed and efficiency of the brake system; in summary, the turntable hydraulic double-end surface brake structure design of the present invention not only improves the braking performance and positioning accuracy of the turntable, but also has a stable structure and easy maintenance, and has good sealing performance and oil circuit design, thereby meeting the high precision and high reliability requirements of the turntable brake system in the field of mechanical processing.

[0024] The present invention and its embodiments are described above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the scope of protection of the present invention.

Claims

1. A turntable hydraulic double end brake, characterized by: It comprises an L-shaped fixing plate (3) and a bidirectional brake plate (4); the L-shaped fixing plate (3) is a circular plate with an L-shaped cross-section; the L-shaped fixing plate (3) comprises a mounting portion (31) and an inner extension portion (32); the mounting portion (31) of the L-shaped fixing plate (3) is mounted on the bottom of the turntable turntable (2) by bolts; the inner extension portion (32) is located at the bottom of the mounting portion (31); there is a gap between the bottom surface of the L-shaped fixing plate (3) and the top surface of the turntable base (1); the bidirectional brake plate (4) is mounted above the turntable base (1); and the edge of the bidirectional brake plate (4) is located above the inner extension portion (32); The bidirectional brake plate (4) is provided with a hydraulic oil chamber (5), and the turntable base (1) is provided with a hydraulic pump. The hydraulic pump injects hydraulic oil into the hydraulic oil chamber (5). When the oil pressure in the hydraulic oil chamber (5) increases, the bidirectional brake plate (4) deforms in both upward and downward directions, presses against the bottom surface of the turntable turntable (2) upward, and presses against the top surface of the inner extension (32) downward. The inner extension (32) is deformed downward under pressure and presses against the top of the turntable base (1).

2. The hydraulic double-end brake for a turntable according to claim 1, characterized in that: The bidirectional brake plate (4) is composed of a lower brake plate (41) and an upper brake plate (42), and the lower brake plate (41) and the upper brake plate (42) are both disc-shaped; a lower oil groove (411) is provided on the top of the lower brake plate (41), and an upper oil groove (421) is provided on the bottom of the upper brake plate (42); the space between the lower oil groove (411) and the upper oil groove (421) is the hydraulic oil chamber (5); when the hydraulic pressure increases, the hydraulic oil chamber (5) is expanded, the edge of the upper brake plate (42) is bent and deformed upward and contacts the turntable turntable (2), and the edge of the lower brake plate (41) is bent and deformed downward and contacts the L-shaped fixing plate (3), and the L-shaped fixing plate (3) is bent and deformed downward under pressure and contacts the turntable base (1).

3. The hydraulic double-end brake for a turntable according to claim 1, characterized in that: The middle parts of the lower brake plate (41) and the upper brake plate (42) are each provided with a shaft hole for the shaft (21) of the turntable turntable (2) to pass through, and the lower brake plate (41) and the upper brake plate (42) are each provided with a plurality of bolt holes around the shaft hole, and the turntable base (1) is provided with threaded holes corresponding to the bolt holes, and bolts are provided through bolt holes of the upper brake plate (42) and the lower brake plate (41), and the ends of the bolts are screwed into the threaded holes, and the bolts fix the upper brake plate (42) and the lower brake plate (41) on the turntable base (1).

4. The hydraulic double-end brake for a turntable according to claim 2, characterized in that: The edge of the lower brake plate (41) is provided with an upward extension portion (412), and the inner side of the upward extension portion (42) is in contact with the side surface of the upper brake plate (42).

5. The hydraulic double-end brake for a turntable according to claim 3 is characterized by: A first annular groove (422) is provided at the contact surface between the bottom of the upper brake plate (42) and the lower brake plate (41), a second annular groove (423) is provided at the contact surface between the side surface of the upper brake plate (42) and the upper extension (412), and both the first annular groove (422) and the second annular groove (423) are provided with sealing rings (7).

6. The hydraulic double-end brake for a turntable according to claim 2, characterized in that: The lower brake plate (41) is provided with a first oil hole (413), and the upper brake plate (42) is provided with a second oil hole (424). The first oil hole (413) and the second oil hole (424) are concentric. The upper brake plate (42) is provided with a connecting hole (425) connecting the hydraulic oil chamber (5) and the second oil hole (424). The bottom of the first oil hole (413) is connected to an oil injection pipe, and the oil injection pipe is connected to the hydraulic pump.

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