Manual emergency braking mechanism

Abstract

The invention belongs to the technical field of diesel engines, and particularly relates to a manual emergency braking mechanism which comprises a supporting seat, a mounting seat and a movable rocker arm, the mounting seat and the movable rocker arm are rotatably mounted on the supporting seat, the mounting seat and the movable rocker arm are coaxially arranged, and a rotation limiting structure is arranged between the movable rocker arm and the mounting seat. The rotation limiting structure comprises a rocker arm limiting structure arranged on the movable rocker arm and a seat body limiting structure arranged on the mounting seat, the rocker arm limiting structure and the seat body limiting structure can be combined / separated, the brake handle is connected to the mounting seat, and the handle limiting structure is fixed to the mounting seat; the handle limiting structure is provided with an accelerator limiting structure and a brake limiting structure which are arranged at an interval in the rotating direction of the mounting base, and the brake handle can be combined with / separated from the accelerator limiting structure and the brake limiting structure; the accelerator control mechanism solves the problems that an existing accelerator control mechanism cannot rapidly achieve emergency braking and the accelerator is excessively adjusted when the accelerator is turned up, and a diesel engine can be controlled more safely.

Description

Technical Field

[0001] The invention belongs to the technical field of diesel engines, and in particular relates to a manual emergency brake mechanism. Background Art

[0002] At present, diesel engines are widely used to provide power for transport vehicles, ships, construction machinery, agricultural machinery, etc. Many diesel engines adjust the output power by adjusting the throttle opening size through the throttle control mechanism. The throttle control mechanism is equipped with an automatic adjustment rocker arm and a handle operating component, which can realize automatic / manual throttle adjustment.

[0003] The existing throttle control mechanism is prone to the problem of over-adjustment of the throttle when the throttle is adjusted. When the diesel engine encounters emergency situations such as runaway, cylinder pulling, shaft seizure, and abnormal operating parameters, emergency braking cannot be quickly implemented, which seriously affects the safety of the diesel engine itself and may also damage other equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a manual emergency brake mechanism, which aims to solve the problem that the existing throttle control mechanism cannot quickly achieve emergency braking and the throttle adjustment is too large when the throttle is increased, so as to control the diesel engine more safely.

[0005] The present invention discloses a manual emergency brake mechanism, which comprises a support seat, a mounting seat and a movable rocker arm which are respectively rotatably mounted on the support seat, the mounting seat and the movable rocker arm are coaxially arranged, a rotation limiting structure is arranged between the movable rocker arm and the mounting seat, the rotation limiting structure comprises a rocker arm limiting structure arranged on the movable rocker arm, a seat body limiting structure arranged on the mounting seat, and the rocker arm limiting structure and the seat body limiting structure can be combined / separated; it also comprises a brake handle connected to the mounting seat, a handle limiting structure fixed to the mounting seat, the handle limiting structure is provided with a throttle limiting structure, a brake limit structure and a brake limit structure which are arranged at intervals along the rotation direction of the mounting seat. The movable limit structure is a dynamic limit structure, and the brake handle can be respectively combined with / separated from the throttle limit structure and the brake limit structure; when the diesel engine is running, the brake handle is arranged at the throttle limit structure and combined with the throttle limit structure, the rocker arm limit structure is separated from the seat body limit structure, and the movable rocker arm can rotate in the direction of approaching / moving away from the seat body limit structure; during emergency braking, the brake handle is separated from the throttle limit structure and turned to the brake limit structure, and the seat body limit structure is combined with the rocker arm limit structure to push the movable rocker arm to rotate to reduce the throttle, and the brake handle is rotated to the brake limit structure to close the throttle and combine with the brake limit structure.

[0006] As an improvement, the rocker arm limiting structure is a rocker arm stop block fixed to the movable rocker arm, and the seat body limiting structure is a seat body stop block fixed to the mounting seat.

[0007] As an improvement, the adjacent sides of the rocker arm stop block and the seat body stop block are set as fitting planes, and the fitting plane of the rocker arm stop block and the fitting plane of the seat body stop block are in a combined state when they fit together.

[0008] As an improvement, the mounting seat is provided with a first seat body ring and a second seat body ring coaxially arranged at intervals, and the axes of the first seat body ring and the second seat body ring are arranged in the same direction as the rotation axis of the mounting seat; the movable rocker arm is provided with a rocker arm ring, and the axis of the rocker arm ring is arranged in the same direction as the rotation axis of the movable rocker arm; a mounting shaft is fixedly installed on the support seat, the rocker arm ring is arranged between the first seat body ring and the second seat body ring, and the first seat body ring, the rocker arm ring and the second seat body ring are rotatably installed on the mounting shaft.

[0009] As an improvement, the mounting seat is connected to the first seat body collar, the second seat body collar, and the seat body stop block as an integrated structure, and the movable rocker arm is connected to the rocker arm collar and the rocker arm stop block as an integrated structure.

[0010] As an improvement, the mounting shaft is a double-headed screw, and a threaded hole is provided on the support seat. The threaded portion of one end of the double-headed screw is installed in the threaded hole, and the first seat body ring, the rocker arm ring, and the second seat body ring are sleeved on the double-headed screw. A limiting bolt is provided at the threaded portion of the double-headed screw away from one end of the support seat, which is used to limit the first seat body ring, the rocker arm ring, and the second seat body ring to the double-headed screw.

[0011] As an improvement, the handle limiting structure includes an inner arc baffle plate arranged near one side of the support seat, an outer arc baffle plate arranged at intervals from the inner arc baffle plate, a first connecting rod and a second connecting rod respectively connected between the two ends of the inner arc baffle plate and the two ends of the outer arc baffle plate, and an arc-shaped protrusion fixed to the side of the inner arc baffle plate near the outer arc baffle plate or the side of the outer arc baffle plate near the inner arc baffle plate, a spacing is provided between the two ends of the arc-shaped protrusion and the first connecting rod and the second connecting rod, a throttle limiting groove formed between the end of the arc-shaped protrusion and the first connecting rod is the throttle limiting structure, a brake groove formed between the end of the arc-shaped protrusion and the second connecting rod is the brake limiting structure, and the throttle limiting structure is located above the brake limiting structure; the brake handle is rotatably mounted on the mounting seat, and is connected to the inner arc baffle plate, the first connecting rod, the area between the outer arc baffle plate and the second connecting rod, and can rotate between the inner arc baffle plate and the outer arc baffle plate.

[0012] As an improvement, a connecting plate is provided between the support seat and the inner arc-shaped baffle.

[0013] As an improvement, the arc-shaped protrusion is arranged on a side of the inner arc-shaped baffle plate close to the outer arc-shaped baffle plate, and the arc-shaped protrusion is connected to the connecting plate as a whole.

[0014] As an improvement, the mounting seat is provided with a mounting groove, and the mounting end of the brake handle is rotatably mounted inside the mounting groove.

[0015] After adopting the above technical solution, the beneficial effects of the present invention are:

[0016] During installation, the support seat of the manual emergency brake mechanism is fixed to the connecting seat of the connecting seat assembly on the corresponding side of the handle operating assembly, and a fourth connecting rod is provided between the movable rocker arm of the manual emergency brake mechanism and the handle operating assembly. The two ends of the fourth connecting rod are respectively rotatably connected to the movable rocker arm and the handle operating assembly. After the brake handle is rotated to the throttle limit structure and combined with the throttle limit structure, since the rocker arm limit structure is separated from the seat body limit structure, the movable rocker arm can be rotated in the direction close to / away from the seat body limit structure. No matter whether the throttle is automatically adjusted by the automatic adjusting rocker arm or the throttle is manually adjusted by the handle operating component, the movable rocker arm can be driven to rotate by the fourth connecting rod, and will not affect the throttle adjustment. After the brake handle is combined with the throttle limit structure, the position of the seat body limit structure is fixed and unchanged, which can limit the maximum throttle position and avoid the problem of excessive throttle adjustment when the throttle is increased. During emergency braking, the brake handle is separated from the throttle limit structure and turned to the brake limit structure. After the seat body limit structure is combined with the rocker arm limit structure, the movable rocker arm is pushed to rotate, and the throttle can be reduced until it is closed through the fourth connecting rod and the handle operating component, so that emergency braking can be achieved quickly and the operation is convenient.

[0017] The manual emergency brake mechanism of the embodiment of the present invention solves the problem that the existing throttle control mechanism cannot quickly realize emergency braking and the throttle adjustment is too large when the throttle is adjusted, and can control the diesel engine more safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a brake handle of a manual emergency brake mechanism according to an embodiment of the present invention being in a state of a maximum throttle limited position;

[0019] Figure 2 is a three-dimensional structural schematic diagram of a brake handle of a manual emergency brake mechanism according to an embodiment of the present invention in a braking state;

[0020] Figure 3 It is a schematic diagram of the exploded structure of a movable rocker arm, a mounting seat and a brake handle of a manual emergency brake mechanism according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of the installation of a manual emergency brake mechanism according to an embodiment of the present invention;

[0022] Among them, 10, support seat; 11, mounting shaft; 20, mounting seat; 21, seat body stop block; 22, first seat body collar; 23, second seat body collar; 24, mounting groove; 25, mounting hole; 30, movable rocker arm; 31, rocker arm stop block; 32, rocker arm collar; 40, brake handle; 41, pin shaft; 51, inner arc baffle; 52, outer arc baffle; 53, first connecting rod; 54, second connecting rod; 55, arc convex block; 56 , throttle limit slot; 57, brake slot; 58, connecting plate; 60, transmission shaft assembly; 61, automatic adjustment rocker arm; 62, connecting rocker arm; 70, throttle lever; 81, connecting seat; 82, rotating shaft; 83, input rocker arm; 84, output rocker arm; 85, first connecting rod; 86, second connecting rod; 87, third connecting rod; 90, handle operation assembly; 91, manual rocker arm; 92, handle; 93, fourth connecting rod; 94, mounting arm. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] Figures 1 to 4 is a structural schematic diagram of a manual emergency brake mechanism according to an embodiment of the present invention, wherein: Figure 1 The figure shows a three-dimensional structural diagram of a manual emergency brake mechanism in an embodiment of the present invention in a state of a maximum throttle limit position. Figure 2 The figure shows a three-dimensional structural diagram of a manual emergency brake mechanism in a braking state according to an embodiment of the present invention. Figure 3 The figure shows the exploded structure of the movable rocker arm, the mounting seat and the brake handle of the manual emergency brake mechanism according to the embodiment of the present invention. Figure 4 The figure shows the installation schematic diagram of the manual emergency brake mechanism of the embodiment of the present invention. For the convenience of description, only the parts related to the present invention are shown in the figure.

[0025] It should be noted that the directional indications involved in the present invention (such as up, down, front, back, etc.) are only used to explain the relative position relationship between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly; if the descriptions of "first", "second", etc. involved in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, an embodiment of the present invention discloses a manual emergency brake mechanism, which is applied to a throttle control mechanism of a diesel engine, comprising a support seat 10, a mounting seat 20 and a movable rocker arm 30 respectively rotatably mounted on the support seat 10, the mounting seat 20 and the movable rocker arm 30 are coaxially arranged, and a rotation limiting structure is provided between the movable rocker arm 30 and the mounting seat 20, the rotation limiting structure comprises a rocker arm limiting structure arranged on the movable rocker arm 30, and a seat body limiting structure arranged on the mounting seat 20, and the rocker arm limiting structure and the seat body limiting structure can be combined / separated; it also comprises a brake handle 40 connected to the mounting seat 20, and a handle limiting structure fixed to the mounting seat 20, the handle limiting structure is provided with spaced apart structures along the rotation direction of the mounting seat 20 The throttle limit structure and the brake limit structure, the brake handle 40 can be combined with / separated from the throttle limit structure and the brake limit structure respectively; when the diesel engine is running, the brake handle 40 is set at the throttle limit structure and combined with the throttle limit structure, the rocker arm limit structure is separated from the seat body limit structure, and an angle α is set between the rocker arm limit structure and the seat body limit structure, and the movable rocker arm 30 can rotate in the direction of approaching / moving away from the seat body limit structure; during emergency braking, the brake handle 40 is separated from the throttle limit structure and turned to the brake limit structure. After the seat body limit structure is combined with the rocker arm limit structure, the movable rocker arm 30 is pushed to rotate to reduce the throttle, and the brake handle 40 is rotated to the brake limit structure to close the throttle and combine with the brake limit structure.

[0027] For ease of understanding, combined Figure 4 The installation and connection of the manual emergency brake mechanism are explained as follows:

[0028] When the diesel engine is a V-type diesel engine, Figure 4As shown, the throttle control mechanism of the diesel engine includes a transmission shaft assembly 60, two groups of throttle rods 70 respectively arranged at the two ends of the transmission shaft assembly 60, an automatic adjustment rocker arm 61 and a handle operating assembly 90 fixed at one end of the transmission shaft assembly 60, and a connecting rocker arm 62 fixed at the other end of the transmission shaft assembly 60, and a connecting seat assembly is respectively provided between the handle operating assembly 90, the connecting rocker arm 62 and the throttle rod 70 on the corresponding side, wherein the automatic adjustment rocker arm 61 is connected to the speed governor (not shown in the figure), and the throttle rod 70 is connected to the rack of the injection pump; the connecting seat assembly includes a connecting seat 81, a rotating shaft 82 rotatably mounted on the connecting seat 81, and an input rocker arm 83 and an output rocker arm 84 respectively fixed at the two ends of the rotating shaft 82; at the output A first connecting rod 85 is provided between the rocker arm 84 and the throttle rod 70, and the two ends of the first connecting rod 85 are rotatably connected to the output rocker arm 84 and the throttle rod 70 respectively; a second connecting rod 86 is provided between the handle operating assembly 90 and the input rocker arm 83 on the corresponding side, and the two ends of the second connecting rod 86 are rotatably connected to the handle operating assembly 90 and the input rocker arm 83 on the corresponding side respectively; a third connecting rod 87 is provided between the connecting rocker arm 62 and the input rocker arm 83 on the corresponding side, and the two ends of the third connecting rod 87 are rotatably connected to the connecting rocker arm 62 and the input rocker arm 83 on the corresponding side respectively; when adjusting the throttle, whether the throttle is automatically adjusted through the automatic adjusting rocker arm 61 or manually adjusted through the handle operating assembly 90, the two groups of throttle rods 70 can be driven to move synchronously in the same direction at the same time.

[0029] During installation, the support seat 10 of the manual emergency brake mechanism is fixed to the connecting seat 81 of the connecting seat assembly on the corresponding side of the handle operating assembly 90, and a fourth connecting rod 93 is provided between the movable rocker arm 30 of the manual emergency brake mechanism and the handle operating assembly 90, and the two ends of the fourth connecting rod 93 are respectively rotatably connected to the movable rocker arm 30 and the handle operating assembly 90.

[0030] After the brake handle 40 is rotated to the throttle limit structure and combined with the throttle limit structure, since the rocker arm limit structure is separated from the seat body limit structure, the movable rocker arm 30 can be rotated in the direction close to / away from the seat body limit structure. No matter whether the throttle is automatically adjusted by the automatic adjustment rocker arm 61 or the throttle is manually adjusted by the handle operating assembly 90, the movable rocker arm 30 can be driven to rotate by the fourth connecting rod 93, which will not affect the throttle adjustment. After the brake handle 40 is combined with the throttle limit structure, the position of the seat body limit structure is fixed and unchanged, which can limit the maximum throttle position and avoid the problem of excessive throttle adjustment when the throttle is increased. During emergency braking, the brake handle 40 is separated from the throttle limit structure and turned to the brake limit structure. After the seat body limit structure is combined with the rocker arm limit structure, the movable rocker arm 30 is pushed to rotate, and the throttle can be reduced by the fourth connecting rod 93 and the handle operating assembly 90 until the throttle is closed, so that emergency braking can be achieved quickly and the operation is convenient. The manual emergency brake mechanism of the embodiment of the present invention solves the problem that the existing throttle control mechanism cannot quickly realize emergency braking and the throttle is adjusted too much when the throttle is adjusted, and can control the diesel engine more safely.

[0031] To facilitate installation and manual adjustment, the handle operating assembly 90 includes a manual rocker arm 91 fixed to the end of the transmission shaft assembly 60, a handle 92 fixed to the manual rocker arm 91, a mounting arm 94 is provided on the side of the manual rocker arm 91 away from the handle 92, and a fourth connecting rod 93 is connected between the mounting arm 94 and the input rocker arm 83.

[0032] When the diesel engine is an in-line diesel engine, it is sufficient to provide a connecting seat assembly and a throttle rod 70 at one end of the transmission shaft assembly 60 .

[0033] In the embodiment of the present invention, the handle limiting structure includes an inner arc baffle 51 arranged near one side of the support seat 10, an outer arc baffle 52 arranged at intervals from the inner arc baffle 51, a first connecting rod 53 and a second connecting rod 54 respectively connected between the two ends of the inner arc baffle 51 and the two ends of the outer arc baffle 52, and an arc-shaped protrusion 55 fixed to the side of the inner arc baffle 51 near the outer arc baffle 52 or the side of the outer arc baffle 52 near the inner arc baffle 51, and the two ends of the arc-shaped protrusion 55 are connected to the first connecting rod 53 and the second connecting rod 54. 4, a throttle limiting slot 56 formed between the end of the arc-shaped protrusion 55 and the first connecting rod 53 is a throttle limiting structure, and a brake slot 57 formed between the end of the arc-shaped protrusion 55 and the second connecting rod 54 is a brake limiting structure, and the throttle limiting structure is located above the brake limiting structure; the brake handle 40 is rotatably mounted on the mounting seat 20, and is connected to the area between the inner arc-shaped baffle plate 51, the first connecting rod 53, the outer arc-shaped baffle plate 52 and the second connecting rod 54, and can be rotated between the inner arc-shaped baffle plate 51 and the outer arc-shaped baffle plate 52.

[0034] In order to facilitate the fixed connection between the handle limiting structure and the support seat 10, a connecting plate 58 is provided between the support seat 10 and the inner arc baffle 51. Furthermore, the arc-shaped protrusion 55 is arranged on the side of the inner arc baffle 51 close to the outer arc baffle 52, and the arc-shaped protrusion 55 is connected to the connecting plate 58 as an integrated structure.

[0035] Specifically, the mounting seat 20 is provided with a mounting groove 24, and the mounting end of the brake handle 40 is rotatably mounted inside the mounting groove 24. Usually, mounting holes 25 are respectively provided on the two side walls of the mounting groove 24, and a serial connection hole is provided at the mounting end of the brake handle 40, and the mounting end of the brake handle 40 is rotatably connected through a pin shaft 41.

[0036] In some other embodiments, the handle limiting structure can also be set to the following structure, including an arc-shaped support plate fixed to the support seat 10, a first spring plunger and a second spring plunger fixed to the arc-shaped support plate at circumferential intervals, a first limiting column fixed to the arc-shaped support plate is provided on the side of the first spring plunger away from the second spring plunger, and a second limiting column fixed to the arc-shaped support plate is provided on the side of the second spring plunger away from the first spring plunger; the brake handle 40 is fixed to the mounting seat 20, and is arranged between the first limiting column and the second limiting column, and a groove matching the ball of the first spring plunger and the ball of the second spring plunger is provided on the side of the brake handle 40 corresponding to the arc-shaped support plate, the first spring plunger and the groove form a throttle limiting structure, and the second spring plunger and the groove form a brake limiting structure.

[0037] In the embodiment of the present invention, Figure 3 As shown, for the convenience of installation, the mounting seat 20 is provided with a first seat body ring 22 and a second seat body ring 23 which are coaxially arranged at intervals, and the axes of the first seat body ring 22 and the second seat body ring 23 are arranged in the same direction as the rotation axis of the mounting seat 20; the movable rocker arm 30 is provided with a rocker arm ring 32, and the axis of the rocker arm ring 32 is arranged in the same direction as the rotation axis of the movable rocker arm 30; the support seat 10 is provided with a mounting shaft 11, the rocker arm ring 32 is arranged between the first seat body ring 22 and the second seat body ring 23, and the first seat body ring 22, the rocker arm ring 32, and the second seat body ring 23 are rotatably installed on the mounting shaft 11.

[0038] Specifically, the mounting shaft 11 is a double-headed screw, and a threaded hole is provided on the support seat 10. The threaded portion of one end of the double-headed screw is installed in the threaded hole. The first seat body ring 22, the rocker arm ring 32, and the second seat body ring 23 are sleeved on the double-headed screw. A limiting bolt is provided at the threaded portion of the double-headed screw away from one end of the support seat 10, which is used to limit the first seat body ring 22, the rocker arm ring 32, and the second seat body ring 23 to the double-headed screw.

[0039] like Figure 1 and Figure 3As shown, the rocker arm limiting structure is a rocker arm stop block 31 fixed to the movable rocker arm 30, and the seat body limiting structure is a seat body stop block 21 fixed to the mounting seat 20. Furthermore, the adjacent sides of the rocker arm stop block 31 and the seat body stop block 21 are set as fitting planes, and the fitting plane of the rocker arm stop block 31 is in a combined state when it fits with the fitting plane of the seat body stop block 21.

[0040] Typically, the mounting seat 20 is connected to the first seat body collar 22, the second seat body collar 23, and the seat body stop block 21 as an integrated structure, and the movable rocker arm 30 is connected to the rocker arm collar 32 and the rocker arm stop block 31 as an integrated structure, which is convenient for processing and production.

[0041] The above are examples of the best implementation of the present invention, and the parts not described in detail are common knowledge of ordinary technicians in the field. The protection scope of the present invention shall be based on the content of the claims, and any equivalent transformation based on the technical enlightenment of the present invention is also within the protection scope of the present invention.

Claims

1. A manual emergency brake mechanism, characterized in that: The invention comprises a support seat (10), a mounting seat (20) and a movable rocker arm (30) respectively rotatably mounted on the support seat (10), the mounting seat (20) and the movable rocker arm (30) being coaxially arranged, a rotation limiting structure being arranged between the movable rocker arm (30) and the mounting seat (20), the rotation limiting structure comprising a rocker arm limiting structure arranged on the movable rocker arm (30) and a seat body limiting structure arranged on the mounting seat (20), the rocker arm limiting structure and the seat body limiting structure being capable of being combined / separated; and further comprising a brake handle (40) connected to the mounting seat (20) and a handle limiting structure fixed to the mounting seat (20), the handle limiting structure being provided with a throttle limiting structure arranged at intervals along the rotation direction of the mounting seat (20). , brake limit structure, the brake handle (40) can be respectively combined with / separated from the throttle limit structure and the brake limit structure; when the diesel engine is running, the brake handle (40) is arranged at the throttle limit structure and combined with the throttle limit structure, the rocker arm limit structure is separated from the seat body limit structure, and the movable rocker arm (30) can be rotated in the direction of approaching / moving away from the seat body limit structure; during emergency braking, the brake handle (40) is separated from the throttle limit structure and turned to the brake limit structure, and after the seat body limit structure is combined with the rocker arm limit structure, the movable rocker arm (30) is pushed to rotate to reduce the throttle, and the brake handle (40) is rotated to the brake limit structure to close the throttle and combine with the brake limit structure.

2. The manual emergency brake mechanism according to claim 1, characterized in that: The rocker arm limiting structure is a rocker arm stop block (31) fixed to the movable rocker arm (30), and the seat body limiting structure is a seat body stop block (21) fixed to the mounting seat (20).

3. The manual emergency brake mechanism according to claim 2, characterized in that: The adjacent sides of the rocker arm stop block (31) and the seat body stop block (21) are arranged as fitting planes, and the fitting plane of the rocker arm stop block (31) and the fitting plane of the seat body stop block (21) are in a combined state when they fit together.

4. The manual emergency brake mechanism according to claim 2, characterized in that: The mounting seat (20) is provided with a first seat body ring (22) and a second seat body ring (23) which are coaxially arranged at intervals, and the axes of the first seat body ring (22) and the second seat body ring (23) are arranged in the same direction as the rotation axis of the mounting seat (20); the movable rocker arm (30) is provided with a rocker arm ring (32), and the axis of the rocker arm ring (32) is arranged in the same direction as the rotation axis of the movable rocker arm (30); the support seat (10) is fixedly mounted with a mounting shaft (11), the rocker arm ring (32) is arranged between the first seat body ring (22) and the second seat body ring (23), and the first seat body ring (22), the rocker arm ring (32) and the second seat body ring (23) are rotatably mounted on the mounting shaft (11).

5. The manual emergency brake mechanism according to claim 4, characterized in that: The mounting seat (20) is connected to the first seat body collar (22), the second seat body collar (23), and the seat body stop block (21) to form an integrated structure, and the movable rocker arm (30) is connected to the rocker arm collar (32) and the rocker arm stop block (31) to form an integrated structure.

6. The manual emergency brake mechanism according to claim 4, characterized in that: The mounting shaft (11) is a double-headed screw, and a threaded hole is provided on the support seat (10). The threaded portion of one end of the double-headed screw is installed in the threaded hole. The first seat body ring (22), the rocker arm ring (32), and the second seat body ring (23) are sleeved on the double-headed screw. A limiting bolt is provided at the threaded portion of one end of the double-headed screw away from the support seat (10), which is used to limit the first seat body ring (22), the rocker arm ring (32), and the second seat body ring (23) to the double-headed screw.

7. The manual emergency brake mechanism according to any one of claims 1 to 6, characterized in that: The handle limiting structure comprises an inner arc baffle (51) arranged near one side of the support seat (10), an outer arc baffle (52) arranged at a distance from the inner arc baffle (51), a first connecting rod (53) and a second connecting rod (54) respectively connected between two ends of the inner arc baffle (51) and two ends of the outer arc baffle (52), and an arc-shaped protrusion (55) fixed to one side of the inner arc baffle (51) near the outer arc baffle (52) or one side of the outer arc baffle (52) near the inner arc baffle (51), and a spacing is provided between the two ends of the arc-shaped protrusion (55) and the first connecting rod (53) and the second connecting rod (54). The throttle limiting groove (56) formed between the end of the arc-shaped protrusion (55) and the first connecting rod (53) is the throttle limiting structure, and the brake groove (57) formed between the end of the arc-shaped protrusion (55) and the second connecting rod (54) is the brake limiting structure, and the throttle limiting structure is located above the brake limiting structure; the brake handle (40) is rotatably mounted on the mounting seat (20), and is connected to the area between the inner arc-shaped baffle plate (51), the first connecting rod (53), the outer arc-shaped baffle plate (52) and the second connecting rod (54), and can be rotated between the inner arc-shaped baffle plate (51) and the outer arc-shaped baffle plate (52).

8. The manual emergency brake mechanism according to claim 7, characterized in that: A connecting plate (58) is provided between the support seat (10) and the inner arc-shaped baffle plate (51).

9. The manual emergency brake mechanism according to claim 8, characterized in that: The arc-shaped protrusion (55) is arranged on a side of the inner arc-shaped baffle (51) close to the outer arc-shaped baffle (52), and the arc-shaped protrusion (55) is connected to the connecting plate (58) as a whole.

10. The manual emergency brake mechanism according to claim 7, characterized in that: The mounting seat (20) is provided with a mounting groove (24), and the mounting end of the brake handle (40) is rotatably mounted inside the mounting groove (24).

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