Rotary table brake structure

Abstract

The utility model relates to a rotary table brake structure, which relates to the field of rotary table equipment, and comprises a central shaft, a box body, a fixing mechanism, an executing mechanism and a brake pad, the fixing mechanism comprises a mounting ring and an inner gasket; the inner ring end of the mounting ring is fixed on the central shaft through a fixing piece; the brake pads comprise the inner brake pads and the outer brake pads, the multiple inner brake pads are arranged, and the inner brake pads, the inner gaskets and the inner brake pads are sequentially fixed to the outer ring of the mounting ring through the fixing pieces in the mounting direction. The outer brake pad is fixedly arranged on the box body; the executing mechanism comprises an executing part. According to the utility model, the arrangement space is saved, the braking force is improved, and the braking effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of rotary table equipment especially a rotary table brake structure. BACKGROUND

[0002] Among numerous industrial equipment and mechanical devices, rotary tables play an indispensable role, and are widely applied to engineering machinery, construction machinery, ship equipment and various automatic production lines, and bear key tasks such as accurate rotary positioning, bearing heavy objects and realizing smooth operation. The running stability and safety of the rotary table are directly related to the normal work of the whole equipment system and the personal safety of the operator, and the performance of the brake structure as the core part of the rotary table braking control is crucial.

[0003] At present, the traditional rotary table brake structure usually adopts a relatively simple brake pad and brake disc combination form. In this structure, the brake pad is often directly fixed on the brake support through bolts. However, in the actual use process, since the rotary table will generate a large impact force when braking, the impact force will act on the brake pad fixed rigidly through the bolts, which is easy to cause the brake pad to deform. Once the brake pad deforms, the fit between the brake pad and the brake disc will decrease significantly, the contact area during braking will decrease, the friction force will be uneven, and thus the braking effect will be greatly reduced, and the braking distance will be greatly increased.

[0004] In view of the above related technology, the existing rotary table brake structure has obvious deficiencies in the fixing mode of the brake pad, the deformation problem, the use of space, etc., and it is difficult to meet the performance requirements and diversified application requirements of modern industrial equipment. INVENTION CONTENTS

[0005] In order to solve the deformation problem of the brake pad and improve the reliability, stability and practicability of the rotary table brake, the utility model provides a rotary table brake structure.

[0006] The utility model provides a rotary table brake structure adopts the following technical scheme:

[0007] A rotary table brake structure, comprising a central shaft, a box body, a fixing mechanism, an executing mechanism and a brake pad, the central shaft is rotationally arranged on the box body;

[0008] The fixing mechanism comprises an inner gasket and an outer gasket;

[0009] The brake pad comprises an inner brake pad and an outer brake pad, the inner brake pad is provided with a plurality of, along the installation direction The order of the outer gasket, the inner brake pad, the inner gasket, the inner brake pad is fixed on the fixed end of the central shaft in turn through the fixing piece;One end of the outer brake pad is fixedly arranged on the box body, and the other end of the outer brake pad and at least one inner brake pad form a brake gap.

[0010] The actuator includes an actuating piece, which can move in a first direction or a reverse direction of the first direction, the first direction being a brake direction of the actuating piece, and the actuating piece can push at least one of the inner brake pads to move towards the outer brake pad when moving in the first direction.

[0011] By adopting the above technical scheme, when the center shaft of the rotary table needs to be braked, the actuating piece is driven to move in the first direction, the actuating piece is in contact with the inner brake pad and is extruded, the actuating piece, the inner brake pad, the outer brake pad and the box are extruded and rubbed with each other, and the braking of the rotary table is completed; by using the cooperation of the inner brake pad and the outer brake pad, the brake clearance is shortened, and the arrangement space is saved; the inner gasket is used to eliminate the pressing force when the inner brake pad is fixed, the possibility of extrusion deformation of the inner brake pad is reduced when the inner brake pad is fixed, and the inner brake pad can be conveniently installed and disassembled.

[0012] Optionally, one end of the outer brake pad is located between the two inner brake pads to form a plurality of brake clearances.

[0013] By adopting the above technical scheme, the cooperation of the inner brake pad-outer brake pad-inner brake pad is used in sequence, the brake clearance is shortened, the arrangement space is saved, the braking force is improved, the braking reaction distance is shortened, and the braking effect is improved.

[0014] Optionally, the driving mechanism further includes a cylinder body and a cylinder cover, the cylinder body is fixedly connected with the box through the fixing piece, the cylinder cover is fixedly connected with the cylinder body through the fixing piece, the actuating piece is slidably arranged between the cylinder body and the cylinder cover, and a driving end for driving the actuating piece to move is arranged on the actuating piece.

[0015] By adopting the above technical scheme, the cylinder body and the cylinder cover are fixed through the fixing piece, the possibility of vibration or deformation of the cylinder body and the cylinder cover when the actuating piece moves is reduced, and the stability is improved; the actuating piece reciprocally slides in the cylinder body and the cylinder cover to realize the pressing or separation of the brake pad, and the driving mode of the actuating piece to move can be hydraulic transmission or pneumatic transmission or telescopic cylinder or electric push cylinder.

[0016] Optionally, the driving end includes a first ring channel and a second ring channel, the first ring channel and the second ring channel are respectively arranged on two end faces of the actuating piece, gas or liquid is respectively introduced into the first ring channel or the second ring channel to drive the actuating piece to move, and the actuating piece is in contact with or separated from the inner brake pad.

[0017] By adopting the technical scheme, when braking is needed, high-pressure gas or liquid is introduced into the first ring channel to push the actuator to move in the first direction, so that braking is realized; when braking needs to be released, the high-pressure gas or liquid is switched to be introduced into the second ring channel to push the actuator to move in the reverse direction of the first direction, so that the contact force of the actuator on the brake pad is realized, and the braking force is effectively and stably driven by the gas pressure or liquid pressure, so that the reliability and response speed of braking are improved.

[0018] Optionally, the actuator further comprises a plurality of sealing members arranged between the cylinder and the actuator and between the cylinder cover and the actuator.

[0019] By adopting the technical scheme, when the actuator reciprocates, the sealing members can seal to reduce the possibility of gas or liquid leakage and the possibility of insufficient braking force.

[0020] Optionally, the actuator comprises a force receiving portion and a contact portion, and the force receiving portion is fixedly connected to the contact portion at two ends thereof.

[0021] By adopting the technical scheme, the force receiving area of the force receiving portion is larger than that of the contact portion, so that a larger force receiving area is used to improve the clamping force, the response is fast, the clamping force is large enough, and the stability and reliability of the clamping brake are further improved.

[0022] Optionally, the mounting ring is fixed to the fixed end of the central shaft by the fixing member, and the outer gasket, the inner brake pad, the inner gasket and the inner brake pad in the mounting direction are sequentially fixed to the mounting ring by the fixing member.

[0023] By adopting the technical scheme, the mounting ring fixes the inner brake pad, and when the inner brake pad needs to be replaced, the entire inner brake pad can be disassembled by only disassembling the mounting ring, so that the convenience in the disassembly and assembly process is improved.

[0024] Optionally, one end of the cylinder or the cylinder cover close to the outer brake pad is provided with a buffer groove.

[0025] By adopting the technical scheme, the buffer groove is designed to reduce the possibility of direct contact and extrusion of the cylinder cover or the cylinder with the outer brake pad when the cylinder or the cylinder cover is deformed under force, and further reduce the possibility of deformation of the outer brake pad under force.

[0026] Optionally, the fixing mechanism further comprises a pressing ring, and the fixing member passes through the pressing ring to fix the outer brake pad on the cylinder cover.

[0027] By adopting the technical scheme, the pressure ring and the cylinder cover clamp the outer brake pad, and the possibility of warping deformation of the outer brake pad due to the pressure stress of the fixing member is reduced.

[0028] Optionally, the inner brake pad is provided with a through hole.

[0029] By adopting the technical scheme, in the reciprocating movement of the executing member, the air pressure at the two ends of the inner brake pad in the movement process is balanced, the influence on the inner brake pad is reduced, the possibility of deformation or false braking is reduced, the through hole design is beneficial to heat dissipation of the inner brake pad, and the service life of the inner brake pad is prolonged.

[0030] In summary, the utility model has at least one of the following beneficial technical effects:

[0031] 1. By setting the fixing mechanism, the brake gap is shortened, the arrangement space is saved, the braking force is improved, and the braking effect is improved; the inner gasket is used to eliminate the pressing force when the inner brake pad is fixed, the possibility of extrusion deformation of the inner brake pad is reduced when the inner brake pad is fixed, and the inner brake pad can be conveniently installed and disassembled.

[0032] 2. By setting the outer gasket, the extrusion stress of the fixing member when fixing the inner brake pad is reduced, and the possibility of extrusion deformation of the inner brake pad is further reduced.

[0033] 3. By setting the executing mechanism, the executing member contacts the pressing force of the brake pad, and is driven by the air pressure or hydraulic pressure, so that effective and stable braking force can be realized, and the reliability and reaction speed of braking are improved.

[0034] 4. By fixing the outer brake pad between the cylinder body and the box body, the contact surface of the box body and the cylinder body can be in flat contact with the outer brake pad, the influence of stress generated when the outer brake pad is fixed by the bolt is reduced, and the possibility of deformation of the outer brake pad is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic view of the overall structure of the embodiment 1 of the utility model;

[0036] Figure 2 is Figure 1 a partial enlarged schematic view of part A in the figure;

[0037] Figure 3 is Figure 1 a partial enlarged schematic view of part B in the figure;

[0038] Figure 4 is a schematic view of the overall structure of the embodiment 2 of the utility model;

[0039] Figure 5 is Figure 4 is a partial enlarged schematic view of the C part in the middle.

[0040] Reference signs: 100, central shaft; 200, box body; 300, fixing mechanism; 310, mounting ring; 320, inner gasket; 330, outer gasket; 340, fixing piece; 350, compression ring; 400, brake pad; 410, inner brake pad; 420, outer brake pad; 430, through hole; 500, actuating mechanism; 510, actuating piece; 511, force receiving part; 512, contact part; 520, cylinder body; 530, driving end; 531, first annular channel; 532, second annular channel; 540, sealing piece; 550, buffer groove; 560, cylinder cover. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings. Figure 1 - the accompanying drawings Figure 5 It is apparent that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0043] In addition, the description of "first", "second" and the like in the present application 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 the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0044] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In addition, the technical solutions of various embodiments of the utility model can be combined with each other, but must be based on the fact that a person having ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it shall be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

[0046] Embodiment 1:

[0047] The utility model discloses a rotary table brake structure. Refer to the accompanying Figure 1 -Appendix Figure 3 A rotary table brake structure mainly includes center shaft 100, box 200, fixed mechanism 300, executing mechanism 500 and brake pad 400, and the center shaft 100 rotationally arranged on the box 200;Fixed mechanism 300 includes mounting ring 310 and inner gasket 320, and the inner ring end of mounting ring 310 is fixed on the outer circumferential surface of center shaft 100 through fixing piece 340;Brake pad 400 includes inner brake pad 410 and outer brake pad 420, and the inner brake pad 410 is provided with a plurality of, and the sequence of inner brake pad 410, inner gasket 320 and inner brake pad 410 along the mounting direction is sequentially fixed on the outer ring of mounting ring 310 through fixing piece 340, and part of fixing piece 340 is not marked, and fixing piece 340 is fixed bolt, and can also be other detachable fixing piece 340;Outer brake pad 420 is fixedly arranged on the box 200;

[0048] Executing mechanism 500 includes executing piece 510, and the executing piece 510 can move along the first direction or the reverse direction of the first direction, and the executing piece 510 can be a piston, and the first direction is the brake direction of the movement of executing piece 510.

[0049] When the center shaft 100 of the rotary table needs to be braked, the executing piece 510 is driven to move along the first direction, the executing piece 510 is in contact with the inner brake and is extruded, the executing piece 510, the inner brake pad 410, the outer brake pad 420 and the box 200 are extruded and rubbed with each other, and the brake of the rotary table is completed;One end of outer brake pad 420 is located between two inner brake pads 410, and by using the mode that "inner brake pad 410-outer brake pad 420-inner brake pad 410" is sequentially matched with each other, the brake gap is shortened, the arrangement space is saved, the braking force is improved, and the braking effect is improved;The inner gasket 320 is used to eliminate the compression force when the inner brake pad 410 is fixed, when the inner brake pad 410 is fixed, the possibility of extrusion deformation of the inner brake pad 410 is reduced, and the inner brake pad 410 can be conveniently installed and disassembled.

[0050] In some embodiments, the fixing mechanism 300 can further include an outer gasket 330, and the fixing member 340 fixes the inner brake pad 410 on the mounting ring 310 through the outer gasket 330. The thickness of the outer gasket 330 can be adjusted according to the length of the fixing member 340, and the thickness of the outer gasket 330 can be greater than the thickness of the inner gasket 320, thereby further reducing the extrusion stress of the fixing member 340 when fixing the inner brake pad 410, and further reducing the possibility of extrusion deformation of the inner brake pad 410.

[0051] In some embodiments, the actuating mechanism 500 can further include a cylinder body 520 and a cylinder cover 560, the cylinder body 520 is fixedly connected between the box body 200 and the fixing member 340, the cylinder cover 560 is fixedly connected with the cylinder body 520 through the fixing member 340, and the actuating member 510 is slidingly arranged between the cylinder body 520 and the cylinder cover 560. The actuating member 510 is provided with a driving end 530 for driving the movement of the actuating member 510. The cylinder body 520 and the cylinder cover 560 are fixed by the fixing member 340, which reduces the possibility of vibration or deformation of the cylinder body 520 and the cylinder cover 560 when the actuating member 510 moves, and improves the stability; the actuating member 510 reciprocally slides in the cylinder body 520 and the cylinder cover 560 to realize the abutting or separation of the brake pad 400. The driving end 530 can be a hydraulic drive or a pneumatic drive or a telescopic cylinder or an electric cylinder.

[0052] In some embodiments, the driving end 530 includes a first ring channel 531 and a second ring channel 532, and the first ring channel 531 and the second ring channel 532 are respectively arranged on the two end faces of the actuating member 510. By respectively introducing gas or liquid into the first ring channel 531 or the second ring channel 532, the actuating member 510 is driven to move, so that the actuating member 510 contacts or separates from the inner brake pad 410.

[0053] When braking is needed, high-pressure gas or liquid is introduced into the first ring channel 531, for example, high-pressure gas, which pushes the actuating member 510 to move in the first direction, realizing the brake; when the brake is needed to be released, the high-pressure gas is switched to be introduced into the second ring channel 532, which pushes the actuating member 510 to move in the opposite direction of the first direction, realizing the abutting force of the actuating member 510 on the brake pad 400. The gas pressure driving mode can realize effective and stable braking force, and improve the reliability and response speed of braking.

[0054] In some embodiments, the actuating mechanism 500 can further include a seal 540, which can be exemplified by an O-shaped rubber seal ring, and the seal 540 is provided between the cylinder body 520 and the actuating member 510 and between the cylinder cover 560 and the actuating member 510. When the actuating member 510 reciprocates, the seal 540 can play a sealing role, reducing the possibility of gas or liquid leakage and reducing the possibility of insufficient braking force.

[0055] In some embodiments, the actuating member 510 includes a force receiving portion 511 and a contact portion 512, the force receiving portion 511 is provided with a first ring channel 531 and a second ring channel 532 at both ends, and one end of the contact portion 512 is fixedly connected with the force receiving portion 511. The force receiving area of the force receiving portion 511 is greater than that of the contact portion 512, so that a larger force receiving area can be used to improve the clamping force, realize fast reaction and large clamping force, and further improve the stability and reliability of the clamping brake.

[0056] In some embodiments, the fixing member 340 is fixed on the box body 200 by penetrating through the cylinder body 520 to fix the outer brake pad 420. The outer brake pad 420 is pressed and fixed on the box body 200 through the cylinder body 520. Since the fixing member 340 needs to penetrate through the cylinder body 520, the influence of the compressive stress generated by the fixing member 340 on the outer brake pad 420 is reduced, and the outer brake pad 420 can have a larger cantilever, thereby further reducing the possibility of deformation of the outer brake pad 420, prolonging the service life of the brake pad 400, and reducing the replacement frequency.

[0057] In some embodiments, the cylinder body 520 is provided with a buffer groove 550 at one end close to the outer brake pad 420. The buffer groove 550 can reduce the possibility of direct contact and extrusion between the cylinder body 520 and the outer brake pad 420 when the cylinder body 520 is deformed under stress, and further reduce the possibility of deformation of the outer brake pad 420.

[0058] In some embodiments, the inner brake pad 410 is provided with a through hole 430. During the reciprocating movement of the actuating member 510, the pressure at both ends of the inner brake pad 410 during the movement can be balanced, the influence on the inner brake pad 410 is reduced, the possibility of deformation or false braking is reduced, and the through hole 430 can facilitate heat dissipation of the inner brake pad 410, thereby prolonging the service life of the inner brake pad 410.

[0059] Embodiment 2:

[0060] The utility model discloses a rotary table brake structure. Referring to the accompanying Figure 4 and the accompanying Figure 5 The rotary table brake structure is different from the embodiment 1 in that:

[0061] The fixing member 340 fixes the outer brake pad 420 on the box body 200 by penetrating the cylinder cover 560. The outer brake pad 420 is pressed and fixed on the box body 200 by the cylinder cover 560. Since the fixing member 340 needs to penetrate the cylinder cover 560, the influence of the compressive stress generated by the fixing member 340 on the outer brake pad 420 is reduced, and the outer brake pad 420 can have a larger cantilever, thereby further reducing the possibility of deformation of the outer brake pad 420, prolonging the service life of the brake pad 400, and reducing the replacement frequency.

[0062] In some embodiments, the cylinder cover 560 is provided with a buffer groove 550 near one end of the outer brake pad 420. The design of the buffer groove 550 can reduce the possibility of direct contact and extrusion of the cylinder cover 560 and the outer brake pad 420 when the cylinder cover 560 is deformed under stress, further reducing the possibility of deformation of the outer brake pad 420 under stress.

[0063] In some embodiments, the fixing mechanism 300 further comprises a pressing ring 350, and the fixing member 340 fixes the outer brake pad 420 on the cylinder cover 560 by penetrating the pressing ring 350. The pressing ring 350 and the cylinder cover 560 fix and clamp the outer brake pad 420, reducing the possibility of warping deformation of the outer brake pad 420 caused by the compressive stress of the fixing member 340.

[0064] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made in accordance with the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A turntable brake structure, characterized in that: It comprises a central shaft (100), a box (200), a fixing mechanism (300), an actuator (500) and a brake pad (400), wherein the central shaft (100) is rotatably arranged on the box (200); The fixing mechanism (300) includes an inner gasket (320) and an outer gasket (330); The brake pad (400) includes an inner brake pad (410) and an outer brake pad (420), and a plurality of inner brake pads (410) are provided. The order of the outer pad (330), the inner brake pad (410), the inner pad (320), and the inner brake pad (410) along the installation direction is fixed to the fixed end of the central shaft (100) through a fixing member (340); one end of the outer brake pad (420) is fixed to the box (200), and a brake gap is formed between the other end of the outer brake pad (420) and at least one of the inner brake pads (410); The actuator (500) includes an actuator (510), and the actuator (510) can move along a first direction or in the opposite direction of the first direction. The first direction is the braking direction of the actuator (510). When the actuator (510) moves along the first direction, it can push at least one of the inner brake pads (410) to move toward the outer brake pad (420).

2. The turntable brake structure according to claim 1, characterized in that: One end of the outer brake pad (420) is located between the two inner brake pads (410) to form a plurality of brake gaps.

3. The turntable brake structure according to claim 1, characterized in that: The actuator (500) further comprises a cylinder body (520) and a cylinder cover (560); the cylinder body (520) is fixedly connected to the housing (200) via the fixing member (340); the cylinder cover (560) is fixedly connected to the cylinder body (520) via the fixing member (340); the actuator (510) is slidably arranged between the cylinder body (520) and the cylinder cover (560); and the actuator (510) is provided with a driving end (530) for driving the actuator (510) to move.

4. The turntable brake structure according to claim 3, characterized in that: The driving end (530) includes a first ring channel (531) and a second ring channel (532), wherein the first ring channel (531) and the second ring channel (532) are respectively opened on two end surfaces of the actuator (510), and gas or liquid is respectively introduced into the first ring channel (531) or the second ring channel (532) to drive the actuator (510) to move, so that the actuator (510) contacts or separates from the inner brake pad (410).

5. The turntable brake structure according to claim 4, characterized in that: The actuator (500) further includes a sealing member (540), and a plurality of the sealing members (540) are provided. The sealing members (540) are provided between the cylinder body (520) and the actuator (510), and between the cylinder cover (560) and the actuator (510).

6. The turntable brake structure according to claim 4, characterized in that: The actuator (510) includes a force-bearing portion (511) and a contact portion (512), wherein the first loop (531) and the second loop (532) are respectively provided at two ends of the force-bearing portion (511), and one end of the contact portion (512) is fixedly connected to the force-bearing portion (511).

7. The turntable brake structure according to claim 1, characterized in that: The fixing mechanism (300) further includes a mounting ring (310), which is fixed to the fixed end of the central shaft (100) via a fixing member (340), and the outer gasket (330), the inner brake pad (410), the inner gasket (320), and the inner brake pad (410) are fixed to the mounting ring (310) in the order of the outer gasket (330), the inner brake pad (410), the inner gasket (320), and the inner brake pad (410) along the mounting direction via the fixing member (340).

8. The turntable brake structure according to claim 3, characterized in that: A buffer groove (550) is provided on one end of the cylinder body (520) or the cylinder cover (560) close to the outer brake pad (420).

9. The turntable brake structure according to claim 3, characterized in that: The fixing mechanism (300) further includes a pressure ring (350), and the fixing member (340) passes through the pressure ring (350) to fix the outer brake pad (420) on the cylinder cover (560).

10. The turntable brake structure according to claim 1, characterized in that: The inner brake pad (410) is provided with a through hole (430).

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