A holding brake device

Abstract

A holding brake device includes a disc spring assembly, a brake shoe assembly, and a friction assembly. There are two friction assemblies and multiple disc spring assemblies. Each disc spring assembly includes a large disc spring and four small disc springs. The brake shoe assembly includes a first brake shoe half ring and a second brake shoe half ring, and the friction assembly includes a friction plate. The back surface of the first brake shoe half ring is connected to the front surface of the second brake shoe half ring, and a gap area is provided between the back surface of the first brake shoe half ring and the front surface of the second brake shoe half ring. A large disc spring mounting area is provided in the central area of the front surface of the first brake shoe half ring. A small disc spring mounting area is provided on each of the large disc spring mounting areas near the left and right sides of the first brake shoe half ring. The multiple large disc springs in the large disc spring mounting areas are arranged sequentially from top to bottom along the longitudinal axis of the large disc spring mounting area. This design improves the buffer braking force and emergency protection measures of high-speed linear motion mechanisms, provides good preload effect, and prolongs service life.

Description

Technical Field

[0001] The present invention relates to an improvement of the braking and holding brake technology of a motion mechanism, belongs to the technical field of holding brake technology, and particularly relates to a holding brake device. Background Art

[0002] With the rapid advancement of modern technology, all industries are experiencing accelerated growth, including manufacturing technologies, particularly in the automotive, aviation, and marine sectors. Driven by technology, these sectors are pursuing increased speeds in their equipment, striving for high-speed, high-quality development. This has inevitably led to rapid developments in brake technology, providing buffering and protective measures for high-speed motion. However, current mechanisms for high-speed linear motion suffer from limited buffering and protection.

[0003] A Chinese patent application with application number CN202020380878.3 and application date of March 24, 2020 discloses a brake-type braking device, comprising a rotating shaft and brakes arranged on both sides of the rotating shaft, the brakes being connected to a hydraulic drive device, and an annular brake plate that cooperates with the brakes being detachably mounted on the rotating shaft, the annular brake plate comprising a first semi-annular plate and a second semi-annular plate that cooperate with each other, and the first semi-annular plate and the second semi-annular plate being tightly sleeved on the rotating shaft, a positioning device being provided between the first semi-annular plate and the second semi-annular plate and the rotating shaft, and four connecting plates being detachably mounted on both sides of the first semi-annular plate and the second semi-annular plate. This device can prevent the rotating shaft from being worn by the brakes, not only preventing the rotating shaft from breaking, but also improving the braking effect of the brakes. It has a reasonable design and good practical effect. However, the problem of poor buffering braking force and emergency protection measures for high-speed linear motion mechanisms still remains unsolved.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problems in the prior art of poor buffering braking force and emergency protection measures of existing high-speed linear motion mechanisms, and to provide a brake device with better buffering braking force and emergency protection measures for high-speed linear motion mechanisms.

[0006] To achieve the above objectives, the technical solution of the present invention is: a holding brake device, comprising a disc spring assembly, a brake shoe assembly, and a friction assembly, wherein the number of friction assemblies is two and the number of disc spring assemblies is multiple; a single disc spring assembly comprises a large disc spring and four small disc springs; the brake shoe assembly comprises a brake shoe half ring and a second brake shoe half ring; and the friction assembly comprises a friction plate;

[0007] The back surface of the first brake shoe half ring is connected to the front surface of the second brake shoe half ring, and a gap area is provided between the back surface of the first brake shoe half ring and the front surface of the second brake shoe half ring;

[0008] A large disc spring installation area is provided in the central area of the front face of the brake shoe half ring, and a small disc spring installation area is provided on each of the positions of the large disc spring installation area near the left and right sides of the brake shoe half ring. The plurality of large disc springs in the large disc spring installation area are arranged in sequence from top to bottom along the longitudinal axis of the large disc spring installation area, and the plurality of small disc springs in the small disc spring installation area are arranged in sequence from top to bottom along the longitudinal axis of the small disc spring installation area.

[0009] The first brake shoe half ring and the second brake shoe half ring are arranged on the high-speed actuator; the bottom of the front friction plate is connected to the top of the first brake shoe half ring, and the bottom of the rear friction plate is connected to the top of the second brake shoe half ring.

[0010] A plurality of small disc spring groups are arranged in sequence from top to bottom in the small disc spring installation area, and a single small disc spring group includes two small disc springs arranged in sequence from top to bottom; a small disc spring group is respectively arranged on the left and right sides of a single large disc spring.

[0011] The spacing between adjacent large disc springs, adjacent small disc spring groups, and the spacing between two small disc springs in a small disc spring group decrease in sequence.

[0012] A large pre-tightening bolt is inserted into the front of the large disc spring, and one end of the back of the large pre-tightening bolt passes through the large disc spring. The large pre-tightening bolt passes through one end of the large disc spring and is inserted into a brake shoe half ring. A small pre-tightening bolt is inserted into the front of the small disc spring, and one end of the back of the small pre-tightening bolt passes through the small disc spring. The small pre-tightening bolt passes through one end of the small disc spring and is inserted into a brake shoe half ring.

[0013] The brake shoe half ring includes two brake shoe blocks and two half rings. The two brake shoe blocks are connected by a connecting plate. The inner wall of one brake shoe block close to the second brake shoe half ring is connected to the half ring. A plurality of bolt holes are preset on the brake shoe block, and a bolt hole is connected to the half ring.

[0014] The two brake shoe half ring includes two two brake shoe blocks and two two half rings. The two brake shoe blocks are connected by two connecting plates. The inner wall of one side of the two brake shoe block close to the two brake shoe half ring is connected to the two half ring. A plurality of two bolt holes are preset on the two brake shoe blocks, and the two bolt holes are connected to the two half rings.

[0015] The side of a brake shoe block is connected to one side of the protrusion, and a recessed area is provided on the side of the brake shoe block, and the recessed area is connected to a connecting plate. The large disc spring is provided in the fastening area between the protrusion, the recessed area and a connecting plate, and one end of the large pre-tightening bolt passes through the large disc spring and is threadedly engaged with a connecting plate.

[0016] The friction plate is semi-annular, and its radius is smaller than the width of a brake shoe half ring. A plurality of locking bolts are arranged on the inner side of the friction plate, and the locking bolts are threadedly matched with a bolt hole.

[0017] A plurality of mounting holes are provided on the inner side of the friction plate, and gaskets are embedded in the inner walls of the mounting holes. The gaskets are arranged around the outer sides of the locking bolts.

[0018] The number of the mounting holes is nine, and the nine mounting holes are evenly distributed in groups of three around the side of the friction plate, and the mounting holes correspond to the locking bolts one by one.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In a holding brake device according to the present invention, a first brake shoe half ring and a second brake shoe half ring are mounted on a high-speed actuator. The bottom of the front friction plate is connected to the top of the first brake shoe half ring, and the bottom of the rear friction plate is connected to the top of the second brake shoe half ring. A large disc spring mounting area is provided in the central front area of the first brake shoe half ring. A small disc spring mounting area is provided on each of the large disc spring mounting area, adjacent to the left and right sides of the first brake shoe half ring. Multiple large disc springs in the large disc spring mounting area are arranged sequentially from top to bottom along the longitudinal axis of the large disc spring mounting area, while multiple small disc springs in the small disc spring mounting area are arranged sequentially from top to bottom along the longitudinal axis of the small disc spring mounting area. When the high-speed actuator moves, dynamic friction is generated between the high-speed actuator and the friction plate. This generated dynamic friction prevents the high-speed actuator from moving, applying a holding brake to the high-speed actuator within a predetermined braking stroke, thereby providing emergency protection and enhancing the buffering braking force and emergency protection measures for high-speed linear motion mechanisms. Therefore, this design provides effective emergency protection and is safer.

[0021] 2. In a holding brake device according to the present invention, a brake shoe half ring comprises two brake shoe blocks and two half rings. The two brake shoe blocks are connected by a connecting plate. The inner wall of one brake shoe block near the second brake shoe half ring is connected to the half ring. The brake shoe block is pre-determined with multiple bolt holes, each of which is connected to the half ring. The back of the first brake shoe half ring is connected to the front of the second brake shoe half ring. A gap area is provided between the back of the first brake shoe half ring and the front of the second brake shoe half ring. The gap area is designed to allow the disc spring assembly to adaptively preload the friction assembly after a certain amount of wear occurs due to friction between the friction assembly and the high-speed actuator. As wear gradually increases, the preload force of the friction assembly is maintained by preloading the disc spring assembly. Therefore, this design has a good preloading effect and a long service life.

[0022] 3. In a holding brake device according to the present invention, a double brake shoe half ring comprises two double brake shoe blocks and two double half rings. The two double brake shoe blocks are connected by two connecting plates. The inner wall of the double brake shoe block near the double brake shoe half ring is connected to the double half ring. The double brake shoe block is pre-determined with multiple bolt holes, which are connected to the double half rings. Brake shoe half ring 1 and brake shoe half ring 2 are each divided into three sections, respectively used to mount and fix friction plates, and to limit the vertical movement of the friction plates and to stop them. Therefore, this design is safe to use and provides segmented isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a top view of the present invention.

[0025] Figure 3 It is a structural schematic diagram of a brake shoe half ring in the present invention.

[0026] Figure 4 It is a top view of a brake shoe half ring in the present invention.

[0027] Figure 5 It is a top view of the two brake shoe half rings in the present invention.

[0028] Figure 6 It is a structural schematic diagram of the friction plate in the present invention.

[0029] Figure 7 It is a structural schematic diagram of the gasket in the present invention.

[0030] In the figure: disc spring assembly A, brake shoe assembly B, friction assembly C, large disc spring 1, large disc spring mounting area 101, large pre-tightening bolt 2, small disc spring 3, small disc spring mounting area 301, small disc spring assembly 31, small pre-tightening bolt 4, a brake shoe half ring 5, a brake shoe block 51, a half ring 52, a bolt hole 53, a connecting plate 54, a protrusion 55, a recessed area 56, a fastening area 57, a friction plate 6, a locking bolt 7, a gasket 8, a mounting hole 81, two brake shoe half rings 9, two brake shoe blocks 91, two half rings 92, two bolt holes 93, a high-speed actuator 10, and a gap area 11. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] See also Figures 1 to 7 A holding brake device includes a disc spring assembly A, a brake shoe assembly B, and a friction assembly C. The number of friction assemblies C is two, and the number of disc spring assemblies A is multiple; a single disc spring assembly A includes a large disc spring 1 and four small disc springs 3; the brake shoe assembly B includes a brake shoe half ring 5 and a second brake shoe half ring 9; and the friction assembly C includes a friction plate 6;

[0033] The back of the first brake shoe half ring 5 is connected to the front of the second brake shoe half ring 9, and a gap area 11 is provided between the back of the first brake shoe half ring 5 and the front of the second brake shoe half ring 9;

[0034] A large disc spring installation area 101 is provided in the central area of the front face of the brake shoe half ring 5. A small disc spring installation area 301 is provided on each of the large disc spring installation area 101 near the left and right sides of the brake shoe half ring 5. The plurality of large disc springs 1 in the large disc spring installation area 101 are arranged sequentially from top to bottom along the longitudinal axis of the large disc spring installation area 101, and the plurality of small disc springs 3 in the small disc spring installation area 301 are arranged sequentially from top to bottom along the longitudinal axis of the small disc spring installation area 301.

[0035] The first brake shoe half ring 5 and the second brake shoe half ring 9 are arranged on the high-speed actuator 10; the bottom of the front friction plate 6 is connected to the top of the first brake shoe half ring 5, and the bottom of the rear friction plate 6 is connected to the top of the second brake shoe half ring 9.

[0036] A plurality of small disc spring groups 31 are arranged in sequence from top to bottom in the small disc spring installation area 301 , and a single small disc spring group 31 includes two small disc springs 3 arranged in sequence from top to bottom; a small disc spring group 31 is respectively provided on the left and right sides of a single large disc spring 1 .

[0037] The spacing between adjacent large disc springs 1, the spacing between adjacent small disc spring groups 31, and the spacing between two small disc springs 3 in a small disc spring group 31 decrease successively.

[0038] The front of the large disc spring 1 is connected with a large pre-tightening bolt 2, and the back end of the large pre-tightening bolt 2 passes through the large disc spring 1. The large pre-tightening bolt 2 passes through one end of the large disc spring 1 and is connected with a brake shoe half ring 5. The front of the small disc spring 3 is connected with a small pre-tightening bolt 4, and the back end of the small pre-tightening bolt 4 passes through the small disc spring 3. The small pre-tightening bolt 4 passes through one end of the small disc spring 3 and is connected with a brake shoe half ring 5.

[0039] The brake shoe half ring 5 includes two brake shoe blocks 51 and two half rings 52. The two brake shoe blocks 51 are connected by a connecting plate 54. The inner wall of one side of the brake shoe block 51 close to the second brake shoe half ring 9 is connected to the half ring 52. A plurality of bolt holes 53 are preset on the brake shoe block 51, and a bolt hole 53 is connected to the half ring 52.

[0040] The two brake shoe half ring 9 includes two two brake shoe blocks 91 and two two half rings 92. The two brake shoe blocks 91 are connected by two connecting plates 94. The inner wall of one side of the two brake shoe block 91 close to the two brake shoe half ring 9 is connected to the two half rings 92. A plurality of two bolt holes 93 are preset on the two brake shoe block 91, and the two bolt holes 93 are connected to the two half rings 92.

[0041] The side of the brake shoe block 51 is connected to one side of the protrusion 55, and the side of the brake shoe block 51 is located on the side of the protrusion 55 and is provided with a recessed area 56, which is connected to a connecting plate 54. The large disc spring 1 is arranged in a fastening area 57 between the protrusion 55, the recessed area 56 and a connecting plate 54, and one end of the large pre-tightening bolt 2 passes through the large disc spring 1 and is threadedly engaged with a connecting plate 54.

[0042] The friction plate 6 is semi-annular, and its radius is smaller than the width of a brake shoe half ring 5 . A plurality of locking bolts 7 are provided on the inner side of the friction plate 6 , and the locking bolts 7 are threadedly engaged with a bolt hole 53 .

[0043] A plurality of mounting holes 81 are formed on the inner side of the friction plate 6 . Washers 8 are embedded in the inner walls of the mounting holes 81 . The washers 8 are disposed around the outer sides of the locking bolts 7 .

[0044] There are nine mounting holes 81 , which are evenly distributed in groups of three on the side of the friction plate 6 . The mounting holes 81 correspond to the locking bolts 7 one by one.

[0045] The principle of the present invention is described as follows:

[0046] The brake shoe assembly B is fixed in a specified position. The large disc spring 1 and the small disc spring 3 on the brake shoe assembly B are pre-tightened to the specified preset value by the large pre-tightening bolt 2 and the small pre-tightening bolt 4 respectively. At this time, the positive pressure generated by the friction plate 6 on the friction assembly C and the high-speed actuator 10 is the brake. When the high-speed actuator 10 moves, the high-speed actuator 10 and the friction plate 6 generate dynamic friction of relative movement. The dynamic friction force generated at this time prevents the high-speed actuator 10 from moving, and the high-speed actuator 10 is braked within the set braking stroke.

[0047] Example 1:

[0048] A holding brake device, comprising a disc spring assembly A, a brake shoe assembly B and a friction assembly C, wherein the number of friction assemblies C is two and the number of disc spring assemblies A is multiple; a single disc spring assembly A comprises a large disc spring 1 and four small disc springs 3; the brake shoe assembly B comprises a brake shoe half ring 5 and a second brake shoe half ring 9, and the friction assembly C comprises a friction plate 6; the back of the brake shoe half ring 5 is connected to the front of the second brake shoe half ring 9, and a gap area 11 is provided between the back of the brake shoe half ring 5 and the front of the second brake shoe half ring 9; a large disc spring mounting area 101 is provided in the central area of the front of the brake shoe half ring 5, and a small disc spring mounting area 3 is provided on each of the parts of the large disc spring mounting area 101 near the left and right sides of the brake shoe half ring 5. 01. The multiple large disc springs 1 in the large disc spring installation area 101 are arranged in sequence from top to bottom along the longitudinal axis direction of the large disc spring installation area 101, and the multiple small disc springs 3 in the small disc spring installation area 301 are arranged in sequence from top to bottom along the longitudinal axis direction of the small disc spring installation area 301; the one brake shoe half ring 5 and the second brake shoe half ring 9 are arranged on the high-speed actuator 10; the bottom of the front friction plate 6 is connected to the top of the one brake shoe half ring 5, and the bottom of the rear friction plate 6 is connected to the top of the second brake shoe half ring 9. The gap area 11 is for when the friction component C and the high-speed actuator 10 produce a certain amount of wear after friction, the disc spring component A can be adaptively pre-tightened. When the wear gradually increases, the pre-tightening force of the friction component C can also be ensured by pre-tightening the disc spring component A.

[0049] During application, the first brake shoe half ring 5 and the second brake shoe half ring 9 are fixed at specified positions, and the large disc spring 1 and the small disc spring 3 on the first brake shoe half ring 5 are pre-tightened to specified predetermined values through the large pre-tightening bolt 2 and the small pre-tightening bolt 4 respectively. At this time, the positive pressure generated by the friction plate 6 on the friction assembly C and the high-speed actuator 10 is the brake. When the high-speed actuator 10 moves, the high-speed actuator 10 and the friction plate 6 generate dynamic friction of relative motion. The dynamic friction force generated at this time prevents the high-speed actuator 10 from moving, and the high-speed actuator 10 is braked within the set braking stroke.

[0050] Example 2:

[0051] Example 2 is basically the same as Example 1, except that:

[0052] A brake device, wherein a plurality of small disc spring groups 31 are arranged in sequence from top to bottom in the small disc spring installation area 301, and a single small disc spring group 31 includes two small disc springs 3 arranged in sequence from top to bottom; a small disc spring group 31 is respectively provided on the left and right sides of a single large disc spring 1; the spacing between adjacent large disc springs 1, adjacent small disc spring groups 31, and the spacing between two small disc springs 3 in a small disc spring group 31 decrease in sequence; a large pre-tightening bolt 2 is inserted into the front of the large disc spring 1, and one end of the back of the large pre-tightening bolt 2 passes through the large disc spring 1, and the large pre-tightening bolt 2 passes through one end of the large disc spring 1 and is inserted into a brake shoe half ring 5, A small pre-tightening bolt 4 is inserted into the front of the small disc spring 3, and one end of the back of the small pre-tightening bolt 4 passes through the small disc spring 3. The small pre-tightening bolt 4 passes through one end of the small disc spring 3 and is inserted into a brake shoe half ring 5, providing the main pre-tightening force for the friction plate 6; providing pre-tightening force and fixing effect for the friction plate 6, the clamping force and deformation of the disc spring are proportional to the amount of deformation, and a large clamping force can be generated when the deformation is very small. When the friction plate 6 and the high-speed actuator 10 produce a certain amount of wear after friction, the positive pressure between the friction plate and the motion mechanism can still be maintained to a certain extent to ensure that the friction plate is within the design range, which can effectively reduce maintenance caused by wear.

[0053] Example 3:

[0054] Example 3 is basically the same as Example 2, except that:

[0055] A holding brake device, wherein the one brake shoe half ring 5 includes two one brake shoe blocks 51 and two half rings 52, the two one brake shoe blocks 51 are connected by a connecting plate 54, the one brake shoe block 51 is connected to the half ring 52 on the inner wall of the side close to the two brake shoe half ring 9, and a plurality of bolt holes 53 are preset on the one brake shoe block 51, and the bolt hole 53 is connected to the half ring 52; the two brake shoe half ring 9 includes two two brake shoe blocks 91 and two two half rings 92, the two two brake shoe blocks 91 are connected by two connecting plates 94, the two brake shoe blocks 91 are connected to the two half rings 92 on the inner wall of the side close to the two brake shoe half ring 9, and the two brake shoe blocks 91 are connected to the two half rings 92. There are multiple bolt holes 93 preset on it, and the two bolt holes 93 are connected with the two half rings 92; the side of the brake shoe block 51 is connected to one side of the protrusion 55, and the side of the brake shoe block 51 is located on the side of the protrusion 55 and is provided with a recessed area 56, which is connected to a connecting plate 54. The large disc spring 1 is arranged in the fastening area 57 between the protrusion 55, the recessed area 56 and a connecting plate 54, and one end of the large pre-tightening bolt 2 passes through the large disc spring 1 and is threadedly matched with a connecting plate 54. The brake shoe half ring 1 5 and the brake shoe half ring 2 9 are each divided into three sections, which are used to install and fix the friction plate 6, and to limit the up and down movement of the friction plate 6 and to stop it.

[0056] Example 4:

[0057] Example 4 is basically the same as Example 3, except that:

[0058] A holding brake device, wherein the friction plate 6 is semi-annular, and a plurality of locking bolts 7 are provided on the inner side of the friction plate 6, and the locking bolts 7 are threadedly engaged with a bolt hole 53; a plurality of mounting holes 81 are opened on the inner side of the friction plate 6, and a gasket 8 is embedded in the inner wall of the mounting hole 81, and the gasket 8 is wrapped around the outer side of the locking bolt 7; the number of the mounting holes 81 is nine, and the nine mounting holes 81 are evenly distributed in groups of three around the side of the friction plate 6, and the mounting holes 81 correspond one-to-one to the locking bolts 7, and are used to fix the friction plate 6.

[0059] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A holding brake device, characterized in that The holding brake device comprises a disc spring assembly (A), a brake shoe assembly (B) and a friction assembly (C), wherein the number of the friction assemblies (C) is two and the number of the disc spring assemblies (A) is multiple; a single disc spring assembly (A) comprises a large disc spring (1) and four small disc springs (3); the brake shoe assembly (B) comprises a brake shoe half ring (5) and a second brake shoe half ring (9), and the friction assembly (C) comprises a friction plate (6); The back surface of the first brake shoe half ring (5) is connected to the front surface of the second brake shoe half ring (9), and a gap area (11) is provided between the back surface of the first brake shoe half ring (5) and the front surface of the second brake shoe half ring (9); A large disc spring installation area (101) is provided in the central area of the front face of the brake shoe half ring (5), and a small disc spring installation area (301) is provided on each of the positions of the large disc spring installation area (101) close to the left and right sides of the brake shoe half ring (5). The plurality of large disc springs (1) in the large disc spring installation area (101) are arranged in sequence from top to bottom along the longitudinal axis direction of the large disc spring installation area (101), and the plurality of small disc springs (3) in the small disc spring installation area (301) are arranged in sequence from top to bottom along the longitudinal axis direction of the small disc spring installation area (301); The first brake shoe half ring (5) and the second brake shoe half ring (9) are arranged on the high-speed actuator (10); the bottom of the front friction plate (6) is connected to the top of the first brake shoe half ring (5), and the bottom of the rear friction plate (6) is connected to the top of the second brake shoe half ring (9); A plurality of small disc spring groups (31) are arranged sequentially from top to bottom in the small disc spring installation area (301), and a single small disc spring group (31) includes two small disc springs (3) arranged sequentially from top to bottom; a small disc spring group (31) is respectively provided on the left and right sides of a single large disc spring (1); The spacing between adjacent large disc springs (1), adjacent small disc spring groups (31), and the spacing between two small disc springs (3) in a small disc spring group (31) decrease in sequence; The front of the large disc spring (1) is plugged with a large pre-tightening bolt (2), and one end of the back of the large pre-tightening bolt (2) penetrates the large disc spring (1). The large pre-tightening bolt (2) penetrates one end of the large disc spring (1) and is plugged into a brake shoe half ring (5). The front of the small disc spring (3) is plugged with a small pre-tightening bolt (4), and one end of the back of the small pre-tightening bolt (4) penetrates the small disc spring (3). The small pre-tightening bolt (4) penetrates one end of the small disc spring (3) and is plugged into a brake shoe half ring (5). The brake shoe assembly (B) is fixed at a specified position, and the large disc spring (1) and the small disc spring (3) on the brake shoe assembly (B) are pre-tightened to a specified predetermined value by the large pre-tightening bolt (2) and the small pre-tightening bolt (4). At this time, the positive pressure generated by the friction plate (6) on the friction assembly (C) and the high-speed actuator (10) is the brake. When the high-speed actuator (10) moves, the high-speed actuator (10) and the friction plate (6) generate relative dynamic friction. The dynamic friction force generated at this time prevents the high-speed actuator (10) from moving, and the high-speed actuator (10) is braked within the set braking stroke.

2. The holding brake device according to claim 1, characterized in that: The brake shoe half ring (5) comprises two brake shoe blocks (51) and two half rings (52). The two brake shoe blocks (51) are connected via a connecting plate (54). The inner wall of one side of the brake shoe block (51) close to the second brake shoe half ring (9) is connected to the half ring (52). A plurality of bolt holes (53) are preset on the brake shoe block (51), and a bolt hole (53) is communicated with the half ring (52).

3. The holding brake device according to claim 1, characterized in that: The two brake shoe half ring (9) comprises two two brake shoe blocks (91) and two two half rings (92). The two brake shoe blocks (91) are connected via two connecting plates (94). The inner wall of one side of the two brake shoe blocks (91) close to the two brake shoe half ring (9) is connected to the two half rings (92). A plurality of two bolt holes (93) are preset on the two brake shoe blocks (91), and the two bolt holes (93) are in communication with the two half rings (92).

4. The holding brake device according to claim 2, characterized in that: The side of the brake shoe (51) is connected to one side of the protrusion (55), and the side of the brake shoe (51) is provided with a recessed area (56) on the side of the protrusion (55), and the recessed area (56) is connected to a connecting plate (54). The large disc spring (1) is provided in a fastening area (57) between the protrusion (55), the recessed area (56) and a connecting plate (54), and one end of the large pre-tightening bolt (2) passes through the large disc spring (1) and is threadedly engaged with a connecting plate (54).

5. The holding brake device according to claim 4, characterized in that: The friction plate (6) is semi-annular, and its radius is smaller than the width of a brake shoe half ring (5). A plurality of locking bolts (7) are provided on the inner side of the friction plate (6), and the locking bolts (7) are threadedly engaged with a bolt hole (53).

6. The holding brake device according to claim 5, characterized in that: A plurality of mounting holes (81) are provided on the inner side of the friction plate (6), and a gasket (8) is embedded in the inner wall of the mounting hole (81), and the gasket (8) is arranged around the outer side of the locking bolt (7).

7. The holding brake device according to claim 6, characterized in that: The number of the mounting holes (81) is nine, and the nine mounting holes (81) are evenly distributed in groups of three around the side of the friction plate (6), and the mounting holes (81) correspond to the locking bolts (7) one by one.

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