Rack vehicle for butt joint of rocket body structures

Abstract

The utility model discloses a rack car for rocket body structure butt joint, and belongs to the technical field of rocket body structure butt joint equipment.The rack car is characterized by comprising a car body, the car body is slidably connected to a sliding rail through rolling wheels, and the car body is connected with a brake assembly; the bearing frame is connected with the vehicle body and used for supporting a rocket body structure; the horizontal adjusting assembly is arranged between the bearing frame and the vehicle body, connected with the bearing frame and the vehicle body and used for adjusting the bearing frame in the horizontal direction; and the lifting assembly is arranged between the horizontal adjusting assembly and the bearing frame, connected with the horizontal adjusting assembly and the bearing frame and used for adjusting the bearing frame in the vertical direction, and the effect of efficient butt joint of rocket body structures is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rocket body structure docking equipment, in particular to a frame for rocket body structure docking. BACKGROUND

[0002] Rocket body docking is a crucial process in the field of aerospace, and the docking accuracy directly affects the reliability and safety of the rocket. With the progress of aerospace technology and the increasing number of rocket launches, the application scope of rocket body docking technology is continuously expanding, and its importance is increasingly prominent. An efficient docking process not only improves work efficiency, but also significantly improves the overall performance of the rocket. During the docking process, the workers need to adjust the frame to ensure the precise docking of the rocket body structure, but the frame for carrying the rocket body in the prior art is inconvenient to adjust, therefore, there is an urgent need for a special device that can be conveniently adjusted and efficiently docked. CONTENT OF THE UTILITY MODEL

[0003] In order to realize efficient docking of the rocket body structure, the utility model provides a frame for rocket body structure docking.

[0004] The frame for rocket body structure docking provided by the utility model adopts the following technical scheme:

[0005] A frame for rocket body structure docking, comprising a vehicle body, the vehicle body is connected to a slide rail through a roller, the vehicle body is connected with a brake assembly;

[0006] A bearing frame, the bearing frame is connected with the vehicle body, used for supporting the rocket body structure;

[0007] A horizontal adjustment assembly, arranged between the bearing frame and the vehicle body, and connected with the bearing frame and the vehicle body, used for adjusting the bearing frame in the horizontal direction; and

[0008] A lifting assembly, arranged between the horizontal adjustment assembly and the bearing frame, and connected with the horizontal adjustment assembly and the bearing frame, used for adjusting the bearing frame in the vertical direction.

[0009] By adopting the above technical scheme, when in use, the rocket body structure is placed on the bearing frame, at the same time, the vehicle body, the roller and the brake assembly are used to realize smooth movement on the slide rail and reliable brake function. The horizontal adjustment assembly ensures the accurate adjustment of the bearing frame in the horizontal direction, and the lifting assembly further enables the bearing frame to be accurately adjusted in the vertical direction, so as to realize efficient docking of the rocket body structure.

[0010] Preferably, the horizontal adjustment assembly comprises a mounting plate, a sliding block, an adjustment lead screw and a rotating disc, the mounting plate is provided with a guide assembly between the mounting plate and the vehicle body, the mounting plate is slidably connected to the vehicle body through the guide assembly, the bearing frame is connected to the mounting plate, the sliding block is connected to the mounting plate, the adjustment lead screw passes through the sliding block and is threadedly connected to the sliding block, the length direction of the adjustment lead screw is perpendicular to the running direction of the vehicle body, both ends of the adjustment lead screw are rotatably connected with supporting blocks, the supporting blocks are fixedly connected to the vehicle body, and the rotating disc is arranged at one end of the adjustment lead screw and connected to the adjustment lead screw.

[0011] By adopting the above technical scheme, rotating the rotating disc can make the adjustment lead screw rotate, and under the cooperation of the guide assembly, the adjustment lead screw drives the sliding block and the mounting plate to move along the horizontal direction of the vehicle body, so as to realize the accurate adjustment of the bearing frame in the horizontal direction.

[0012] Preferably, the guide assembly comprises a guide rail and a guide block, the guide rail is connected to the vehicle body, and the length direction of the guide rail is parallel to the length direction of the adjustment lead screw, the guide block is slidably connected to the guide rail, and the guide block is connected to the mounting plate.

[0013] By adopting the above technical scheme, the guide rail is connected to the vehicle body, and the length direction of the guide rail is parallel to the length direction of the adjustment lead screw, and the guide block is slidably connected to the guide rail, so as to improve the stability and precision in the horizontal adjustment process.

[0014] Preferably, a movable groove is formed in the vehicle body, both ends of the movable groove perpendicular to the running direction of the vehicle body penetrate the side wall of the vehicle body, the top of the mounting plate is flush with the top of the vehicle body, and the horizontal adjustment assembly and the guide assembly are arranged in the movable groove.

[0015] By adopting the above technical scheme, the movable groove formed in the vehicle body can hide the horizontal adjustment assembly and the guide assembly in the vehicle body, so as to improve the compactness and aesthetics of the overall structure. Meanwhile, the design that the length direction of the adjustment lead screw is perpendicular to the running direction of the vehicle body ensures the stability in the horizontal adjustment process, and avoids the problems of deviation or shaking caused by the transverse force generated in the adjustment process.

[0016] Preferably, the lifting assembly adopts a screw lifter, the screw lifter is arranged between the mounting plate and the bearing frame and connected to the mounting plate and the bearing frame, and is used to realize the movement of the bearing frame in the vertical direction.

[0017] By adopting the above technical scheme, the lifting assembly adopts the screw lifter, the screw lifter is arranged between the mounting plate and the bearing frame and connected to the mounting plate and the bearing frame, so as to realize the smooth movement of the bearing frame in the vertical direction.

[0018] Preferably, the two ends of the bearing frame are provided with the screw jacks, the driving rod of any of the screw jacks is connected with an adjusting disc, and the driving rods of the at least two screw jacks are fixed through a connecting shaft for realizing synchronous movement of the at least two screw jacks.

[0019] By adopting the above technical scheme, the two ends of the bearing frame are provided with the screw jacks for stably lifting the bearing frame. When the screw jack connected with the adjusting disc is adjusted, the connecting shaft realizes synchronous movement of the at least two screw jacks, thereby ensuring stable adjustment of the bearing frame in the vertical direction and improving the precision and stability of the rocket body structure docking.

[0020] Preferably, the mounting plate is connected with a plurality of guide structures, and the plurality of guide structures are respectively arranged on the two sides of the bearing frame for guiding the movement of the bearing frame in the vertical direction.

[0021] By adopting the above technical scheme, the plurality of guide structures connected with the mounting plate are respectively arranged on the two sides of the bearing frame, thereby effectively improving the stability and guiding precision of the bearing frame in the vertical direction.

[0022] Preferably, the brake assembly comprises a mounting seat, a support, a mounting block, a control rod, a driving block, a movable rod, a moving rod, a spring and a brake pad, the mounting seat is connected with the bottom of the vehicle body, the support and the mounting block are respectively arranged at the two ends of the mounting seat, and the support and the mounting block are connected with the mounting seat.

[0023] The control rod is rotationally connected with the support, the driving block is fixedly connected with the control rod, the moving rod penetrates through the mounting seat and is slidingly connected with the mounting seat, the movable rod is connected with one end of the moving rod close to the driving block, one end of the movable rod close to the driving block is rotationally connected with a wheel, and the wheel slidingly abuts against the side wall of the driving block.

[0024] The spring is sleeved on the moving rod and located between the movable rod and the mounting seat, one end of the spring abuts against the mounting seat and the other end abuts against the movable rod, and the brake pad is connected with one end of the moving rod away from the movable rod.

[0025] A first clamping groove and a second clamping groove are formed in the side wall of the driving block, when the wheel is clamped in the first clamping groove, the brake pad abuts against the circumferential surface of the roller for braking the roller, and when the wheel is clamped in the second clamping groove, the brake pad is separated from the roller.

[0026] By adopting the technical scheme, the brake assembly can effectively realize the braking of the roller. Specifically, the control rod drives the cam to rotate, the cam pushes the movable rod through the wheel, and then pushes the moving rod to slide along the mounting base, so that the brake pad tightly contacts the circumferential surface of the roller to realize the brake function. The function of the spring is to keep the brake pad separated from the roller in the non-braking state, so as to ensure the free rotation of the roller. When the brake pad contacts the circumferential surface of the roller, the roller can be quickly slowed down and stopped, thereby ensuring the stability and safety of the vehicle during use.

[0027] In summary, the utility model has the following beneficial effects:

[0028] In use, the rocket body structure is placed on the bearing frame, and at the same time, the vehicle body, the roller and the brake assembly realize stable movement on the slide rail and reliable brake function. The horizontal adjustment assembly ensures accurate adjustment of the bearing frame in the horizontal direction, and the lifting assembly further enables the bearing frame to be accurately adjusted in the vertical direction, thereby realizing efficient docking of the rocket body structure. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a whole structure schematic view of a vehicle for rocket body structure docking.

[0030] Figure 2 It is a structure schematic view of a horizontal adjustment assembly and a guide assembly.

[0031] Figure 3 It is an explosion schematic view of a bearing frame and a lifting assembly.

[0032] Figure 4 It is a structure schematic view of a brake assembly.

[0033] Figure 5 It is an explosion schematic view of a wheel and a driving block.

[0034] BRIEF DESCRIPTION OF DRAWINGS:

[0035] 1, vehicle body; 11, movable groove; 12, roller; 13, slide rail; 2, bearing frame; 3, brake assembly; 31, mounting base; 32, support; 33, mounting block; 34, control rod; 35, driving block; 351, first clamping groove; 352, second clamping groove; 36, movable rod; 361, wheel; 37, moving rod; 38, spring; 39, brake pad; 4, horizontal adjustment assembly; 41, mounting plate; 42, sliding block; 43, adjusting screw; 44, rotating disc; 5, guide assembly; 51, guide rail; 52, guide block; 6, lifting assembly; 61, screw lifting machine; 62, connecting shaft; 63, adjusting disc; 7, guide structure. DETAILED DESCRIPTION

[0036] In order for those skilled in the art to better understand the technical solutions in the specification, the technical solutions in the specification will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the specification. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0037] In the description of the embodiments of the present application, the words such as "for example" or "for instance" are used to represent an example, illustration or description. Any embodiment or design scheme described as "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "for example" or "for instance" are intended to present the relevant concept in a specific manner.

[0038] In the description of the embodiments of the present application, the term "a plurality of" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. In addition, the terms "first", "second" are used for description purposes only, and should not be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more features. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.

[0039] A vehicle frame for docking a rocket body structure, referring to Figure 1 , Figure 2 and Figure 3 , comprising a vehicle body 1, a bearing frame 2, a horizontal adjustment assembly 4 and a lifting assembly 6. The vehicle body 1 is slidingly connected to the slide rail 13 through the roller 12, and the vehicle body 1 is connected with the brake assembly 3. The bearing frame 2 is connected with the vehicle body 1, and is used for supporting the rocket body structure. The horizontal adjustment assembly 4 is arranged between the bearing frame 2 and the vehicle body 1, and is connected with the bearing frame 2 and the vehicle body 1, and is used for adjusting the bearing frame 2 in the horizontal direction. The lifting assembly 6 is arranged between the horizontal adjustment assembly 4 and the bearing frame 2, and is connected with the horizontal adjustment assembly 4 and the bearing frame 2, and is used for adjusting the bearing frame 2 in the vertical direction.

[0040] In use, the rocket body structure is placed on the bearing frame 2, and at the same time, stable movement on the slide rail 13 and reliable brake function are realized through the vehicle body 1, the roller 12 and the brake assembly 3. The horizontal adjustment assembly 4 ensures accurate adjustment of the bearing frame 2 in the horizontal direction, and the lifting assembly 6 further enables the bearing frame 2 to be accurately adjusted in the vertical direction, thereby realizing efficient docking of the rocket body structure.

[0041] Referring to Figure 2The vehicle body 1 is cuboid, and four rollers 12 are arranged at four corners of the vehicle body 1 in the embodiment.

[0042] Referring to Figure 1 The carrier 2 comprises two vertically arranged arc-shaped plates and a plurality of connecting members. The two arc-shaped plates are arranged in parallel, and the centers of the arc-shaped plates are located away from the vehicle body 1. The connecting line of the centers of the two arc-shaped plates is parallel to the slide rail 13. The plurality of connecting members are arranged between the two arc-shaped plates, and the connecting members are columnar bodies with different diameters. The connecting members are arranged horizontally, and the connecting members are fixedly connected with the two arc-shaped plates.

[0043] Referring to Figure 2 and Figure 4 The brake assembly 3 is arranged between the two rollers 12 in the walking direction of the vehicle body 1. The brake assembly 3 comprises a mounting seat 31, a bracket 32, a mounting block 33, a control rod 34, a driving block 35, a movable rod 37, a spring 38 and a brake pad 39. The mounting seat 31 is fixedly connected with the vehicle body 1, and the bracket 32 and the mounting block 33 are arranged at two ends of the mounting seat 31 in the walking direction. The bracket 32 and the mounting block 33 are fixedly connected. One end of the control rod 34 penetrates through the bracket 32 and is rotatably connected with the bracket 32, and the other end extends to the side surface of the vehicle body 1. The driving block 35 is fixedly connected with the control rod 34.

[0044] Referring to Figure 4 and Figure 5 The movable rod 37 is arranged horizontally, and the movable rod 37 penetrates through the mounting seat 31 and is slidably connected with the mounting seat 31. The movable rod 36 is arranged horizontally, and one end of the movable rod 36 is fixedly connected with the end of the movable rod 37 close to the bracket 32. The end of the movable rod 36 close to the bracket 32 is rotatably connected with a wheel 361, and the wheel 361 abuts against the side wall of the driving block 35. The spring 38 is sleeved on the movable rod 37, and one end of the spring 38 is fixedly connected with the mounting seat 31, and the other end is fixedly connected with the movable rod 36. The brake pad 39 is fixedly connected with the end of the movable rod 37 away from the movable rod 36.

[0045] Referring to Figure 4 and Figure 5 A first clamping groove 351 and a second clamping groove 352 are arranged on the side wall of the driving block 35. When the driving block 35 is clamped in the first clamping groove 351, the brake pad 39 abuts against the circumferential surface of the roller 12; and when the wheel 361 is clamped in the second clamping groove 352, the brake pad 39 is separated from the roller 12.

[0046] The control lever 34 drives the cam to rotate, the cam drives the movable rod 36 through the wheel 361, and then drives the moving rod 37 to slide along the mounting seat 31, so that the brake pad 39 is tightly attached to the circumferential surface of the roller 12 to realize the brake function. The spring 38 functions to keep the brake pad 39 separated from the roller 12 in the non-braking state, thereby ensuring the free rotation of the roller 12.

[0047] With reference to Figure 2 , the top of the vehicle body 1 is provided with a movable groove 11, and the two ends of the movable groove 11 perpendicular to the direction of travel of the vehicle body 1 penetrate through the side wall of the vehicle body 1. The horizontal adjustment assembly 4 is arranged in the movable groove 11 to improve the stability during movement.

[0048] With reference to Figure 1 and Figure 2 , the horizontal adjustment assembly 4 comprises a mounting plate 41, a sliding block 42, an adjusting lead screw 43 and a rotating disc 44. The mounting plate 41 is horizontally arranged, and the top of the mounting plate 41 is flush with the top of the vehicle body 1. The sliding block 42 is fixedly connected with the bottom of the mounting plate 41. The adjusting lead screw 43 is horizontally arranged, and the length direction of the adjusting lead screw 43 is perpendicular to the direction of travel of the vehicle body 1. The adjusting lead screw 43 penetrates through the sliding block 42 and is threadedly connected with the sliding block 42. The two ends of the adjusting lead screw 43 are both rotatably connected with support blocks, and the two support blocks are fixedly connected with the vehicle body 1. One end of the adjusting lead screw 43 penetrates through the support block and is fixedly connected with the rotating disc 44.

[0049] Rotating the rotating disc 44 can drive the adjusting lead screw 43 to rotate. Under the cooperation of the guide assembly 5, the adjusting lead screw 43 drives the sliding block 42 and the mounting plate 41 to move along the horizontal direction of the vehicle body 1, thereby realizing the precise adjustment of the carrying frame 2 in the horizontal direction.

[0050] With reference to Figure 2 , the mounting plate 41 is connected with the guide assembly 5, and the guide assembly 5 is provided with two groups. The two groups of guide assemblies 5 are arranged in the movable groove 11 and are respectively arranged on the two sides of the adjusting lead screw 43.

[0051] With reference to the drawings, the guide assembly 5 comprises a guide rail 51 and a guide block 52. The length direction of the guide rail 51 is parallel to the length direction of the adjusting lead screw 43, and the guide rail 51 is fixedly connected with the vehicle body 1. The sliding block 42 is fixedly connected with the mounting plate 41 and is slidably connected with the sliding rail 13.

[0052] The guide rail 51 is connected with the vehicle body 1 and the length direction of the guide rail 51 is parallel to the length direction of the adjusting lead screw 43. The guide block 52 is slidably connected with the guide rail 51, thereby improving the stability and precision during horizontal adjustment.

[0053] With reference to Figure 3 , the lifting assembly 6 adopts a lead screw lifter 61, and the lead screw lifter 61 is provided with two, which are respectively arranged at the two ends of the carrying frame 2. The bottom of the lead screw lifter 61 is fixedly connected with the mounting plate 41, and the top is fixedly connected with the carrying frame 2.

[0054] With reference to Figure 3 The driving rods of the two screw jacks 61 are fixedly connected through the connecting shaft 62, and the driving rod of any screw jack 61 is fixedly connected with the adjusting disc 63.

[0055] When the screw jack 61 connected with the adjusting disc 63 is adjusted, the connecting shaft 62 realizes the synchronous movement of the at least two screw jacks 61, thereby ensuring the smooth adjustment of the carrier frame 2 in the vertical direction and improving the precision and stability of the docking of the rocket body structure.

[0056] With reference to Figure 2 and Figure 3 The top of the mounting plate 41 is fixedly connected with a plurality of guide structures 7, and in the embodiment, four guide structures 7 are arranged. The four guide structures 7 are evenly distributed on both sides of the carrier frame 2. The two guide structures 7 located on the same side of the carrier frame 2 are respectively located at both ends of the carrier frame 2.

[0057] With reference to Figure 2 The guide structure 7 comprises a fixed part and a guide part. The fixed part is fixedly connected with the mounting plate 41, and the guide part is sleeved on the fixed part and abuts against the carrier frame 2, thereby effectively improving the stability and guiding precision of the carrier frame 2 during the movement in the vertical direction.

[0058] The use principle of the present application is as follows: when used, the rocket body structure is placed on the carrier frame 2, and at the same time, the stable movement on the slide rail 13 and the reliable braking function are realized through the vehicle body 1, the roller 12 and the brake assembly 3. The horizontal adjustment assembly 4 ensures the accurate adjustment of the carrier frame 2 in the horizontal direction, and the lifting assembly 6 further enables the carrier frame 2 to be accurately adjusted in the vertical direction, thereby realizing the efficient docking of the rocket body structure.

[0059] The embodiments of the specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, so that: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cradle for docking a rocket body structure, characterized by: The utility model relates to a rocket body structure horizontal and vertical adjustment device, including car body (1), car body (1) is connected with slide rail (13) through the roller (12), car body (1) is connected with brake assembly (3); The carrier frame (2) is connected with the car body (1) and is used for supporting the rocket body structure; The horizontal adjustment assembly (4) is arranged between the carrier frame (2) and the car body (1) and is connected with the carrier frame (2) and the car body (1), and is used for adjusting the carrier frame (2) in the horizontal direction; And The lifting assembly (6) is arranged between the horizontal adjustment assembly (4) and the carrier frame (2) and is connected with the horizontal adjustment assembly (4) and the carrier frame (2), and is used for adjusting the carrier frame (2) in the vertical direction.

2. The vehicle frame for rocket vehicle structure docking according to claim 1, characterized in that: The horizontal adjustment assembly (4) includes a mounting plate (41), a sliding block (42), an adjusting lead screw (43) and a rotating disc (44), the mounting plate (41) is provided with a guide assembly (5) between the car body (1), the mounting plate (41) is slidably connected with the car body (1) through the guide assembly (5), the carrier frame (2) is connected with the mounting plate (41), the sliding block (42) is connected with the mounting plate (41), the adjusting lead screw (43) passes through the sliding block (42) and is threadedly connected with the sliding block (42), the length direction of the adjusting lead screw (43) is perpendicular to the running direction of the car body (1), both ends of the adjusting lead screw (43) are rotatably connected with supporting blocks, the supporting blocks are fixedly connected with the car body (1), and the rotating disc (44) is arranged at one end of the adjusting lead screw (43) and is connected with the adjusting lead screw (43).

3. The cradle for docking of a rocket body structure according to claim 2, characterized in that: The guide assembly (5) includes a guide rail (51) and a guide block (52), the guide rail (51) is connected with the car body (1), and the length direction of the guide rail (51) is parallel to the length direction of the adjusting lead screw (43), the guide block (52) is slidably connected with the guide rail (51), and the guide block (52) is connected with the mounting plate (41).

4. The cradle for docking of a rocket body structure according to claim 2, characterized in that: The car body (1) is provided with a movable groove (11), both ends of the movable groove (11) perpendicular to the running direction of the car body (1) penetrate the side wall of the car body (1), the top of the mounting plate (41) is flush with the top of the car body (1), and the horizontal adjustment assembly (4) and the guide assembly (5) are arranged in the movable groove (11).

5. The cradle for docking of a rocket body structure according to claim 2, characterized in that: The lifting assembly (6) adopts a lead screw lifting machine (61), the lead screw lifting machine (61) is arranged between the mounting plate (41) and the carrier frame (2) and is connected with the mounting plate (41) and the carrier frame (2), and is used for realizing the movement of the carrier frame (2) in the vertical direction.

6. A cradle for docking a rocket body structure as defined in claim 5, wherein: Both ends of the carrier frame (2) are provided with the lead screw lifting machine (61), the driving rod of any lead screw lifting machine (61) is connected with an adjusting disc (63), and the driving rods of at least two lead screw lifting machines (61) are fixed through a connecting shaft (62), so as to realize the synchronous movement of the at least two lead screw lifting machines (61).

7. The cradle for docking of a rocket body structure according to claim 5, characterized in that: The mounting plate (41) is connected with a plurality of guide structures (7), and the plurality of guide structures (7) are arranged on both sides of the bearing frame (2) and are used for guiding the bearing frame (2) in the vertical direction.

8. The cradle for docking of a rocket body structure according to claim 1, characterized in that: The brake assembly (3) comprises a mounting seat (31), a support (32), a mounting block (33), a control rod (34), a driving block (35), a movable rod (36), a moving rod (37), a spring (38) and a brake pad (39), the mounting seat (31) is connected with the bottom of the vehicle body (1), the support (32) and the mounting block (33) are arranged at both ends of the mounting seat (31), and the support (32) and the mounting block (33) are connected with the mounting seat (31); The control rod (34) is rotatably connected with the support (32), the driving block (35) is fixedly connected with the control rod (34), the moving rod (37) penetrates through the mounting seat (31) and is slidably connected with the mounting seat (31), the movable rod (36) is connected with one end of the moving rod (37) close to the driving block (35), one end of the movable rod (36) close to the driving block (35) is rotatably connected with a wheel (361), and the wheel (361) is in sliding abutment with the side wall of the driving block (35); The spring (38) is sleeved on the moving rod (37) and located between the movable rod (36) and the mounting seat (31), one end of the spring (38) is in abutment with the mounting seat (31), the other end is in abutment with the movable rod (36), and the brake pad (39) is connected with one end of the moving rod (37) away from the movable rod (36); A first clamping groove (351) and a second clamping groove (352) are formed in the side wall of the driving block (35), when the wheel (361) is clamped in the first clamping groove (351), the brake pad (39) is in abutment with the circumferential surface of the roller (12), so as to brake the roller (12), and when the wheel (361) is clamped in the second clamping groove (352), the brake pad (39) is separated from the roller (12).

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