Efficient and energy-saving centrifugal clutch of refrigerated transport vehicle

Abstract

The utility model discloses an efficient energy-saving refrigerated transport vehicle centrifugal clutch, and relates to the technical field of centrifugal clutches, the centrifugal clutch comprises a flywheel, a shell is arranged on the end face of one side of the flywheel, a connecting through hole is formed in the end face of one side of the shell, and a movable pressing rod is arranged in the connecting through hole; a gearbox input shaft is installed in the movable pressing rod, a pressing plate is installed on the gearbox input shaft, a diaphragm plate is installed on the end face of one side of the pressing plate, a spring is installed between the diaphragm plate and the pressing plate, a pressing block is installed on one side of the spring, and a fastening screw is installed on one side of the pressing block. The fastening screw is in threaded connection with the end face of one side of the shell, the end face of one side of the fastening screw is rotationally connected with the pressing block, and according to the scheme, the problem that in the prior art, in the using process of a centrifugal clutch, due to frequent braking, the pressure of a spring is weakened, the spring is fatigued and soft, and normal use of the centrifugal clutch is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal clutches, in particular to a high-efficiency and energy-saving centrifugal clutch for a refrigerated transport vehicle. Background Art

[0002] The centrifugal clutch is a clutch that automatically separates or combines the centrifugal block under the action of centrifugal force when the transmission shaft reaches a certain speed. Compared with other clutches, the centrifugal clutch does not require another set of operating mechanisms and can also play a safety protection role when overloaded. Due to its unique advantages, the centrifugal clutch is widely used in industry. Its typical applications include small construction machinery, garden machinery, drilling machinery, fans, centrifuges, compressors and presses, etc.

[0003] For example, the Chinese authorized patent (centrifugal clutch) with announcement number CN210531452U includes a driving disk, a hollow driven shaft and a one-way bearing arranged at the end of the hollow driven shaft, the driving disk is provided with a first internal spline hole matching with the engine crankshaft, the inner ring of the one-way bearing is also provided with a second internal spline hole matching with the engine crankshaft, and the one-way bearing is directly connected to the engine crankshaft through the internal spline. Compared with the prior art in which the engine crankshaft needs to be connected to the one-way bearing through the driving disk, it reduces a set of transmission pairs, thereby eliminating the influence of the reorganized transmission pairs on the coaxiality of the one-way bearing and the engine crankshaft, making it easier to ensure the coaxiality accuracy of the engine crankshaft and the one-way bearing, thereby avoiding unilateral wear of the inner roller of the one-way bearing, and solving the technical problems of abnormal noise and premature failure of the one-way bearing.

[0004] However, the centrifugal clutch in the above-mentioned prior art will weaken the pressure of the spring due to frequent braking during use, resulting in fatigue, thereby affecting its normal use; therefore, it does not meet the existing needs. In this regard, we propose a high-efficiency and energy-saving refrigerated transport vehicle centrifugal clutch. Utility Model Content

[0005] The utility model aims to provide a centrifugal clutch for refrigerated transport vehicles with high efficiency and energy saving, so as to solve the problem that the centrifugal clutch in the prior art proposed in the above-mentioned background technology may weaken the pressure of the spring and become weak due to frequent braking during use, thereby affecting its normal use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency and energy-saving centrifugal clutch for refrigerated transport vehicles, comprising a flywheel, a shell is provided on one end face of the flywheel, a connecting through hole is provided on one end face of the shell, a movable pressure rod is provided inside the connecting through hole, a gearbox input shaft is installed inside the movable pressure rod, a pressure plate is installed on the gearbox input shaft, a diaphragm plate is installed on one end face of the pressure plate, a spring is installed between the diaphragm plate and the pressure plate, a pressure block is installed on one side of the spring, and a fastening screw is installed on one side of the pressure block.

[0007] Preferably, the fastening screw is threadedly connected to one end surface of the shell, and one end surface of the fastening screw is rotatably connected to the pressing block.

[0008] Preferably, a pedal connection groove is provided on the surface of the movable pressure rod, a friction disc is provided on one side of the pressure plate, a shaft sleeve is provided between the pressure plate and the friction disc, and a fixed disc is installed on one side of the friction disc.

[0009] Preferably, a limit rod is installed on the diaphragm plate.

[0010] Preferably, gears are arranged on the surfaces surrounding the flywheel, and there are a plurality of gears.

[0011] Preferably, fixing holes are arranged on all four sides of the shell, and fixing screws are installed inside the fixing holes.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model provides a pressure block on one side of the spring, and a fastening screw is installed on one side of the pressure block. The fastening screw is connected to the inner thread of the shell and is rotatably connected to the surface of the pressure block. The engagement and disengagement of the clutch are completely controlled by the engine speed. When the engine speed is high, the clutch is engaged. The higher the speed, the greater the centrifugal force and the tighter the clutch engagement. Conversely, when the engine speed is lower than the idle speed, the clutch is in a disengaged state. When the foot pedal is stepped on, the pressure rod will be driven to press the diaphragm plate and the spring inward, thereby separating the friction disk and the flywheel, and a certain distance will be generated between the friction disk and the pressure plate to avoid friction. The fastening screw can be used to make the pressure block generate downward pressure on the spring, thereby adjusting the degree of spring weakness, thereby solving the problem that the centrifugal clutch in the prior art will weaken the pressure of the spring due to frequent braking during use, thereby affecting its normal use.

[0014] 2. By arranging a sleeve and a fixed plate on both sides of the friction plate, the friction plate will not be offset when it is connected to the pressure plate through the gearbox input shaft. At the same time, frequent opening and closing will not cause dislocation and affect its use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the centrifugal clutch of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the centrifugal clutch of the utility model;

[0017] Figure 3 It is an enlarged schematic diagram of the structure of the internal section A of the centrifugal clutch of the utility model;

[0018] Figure 4 It is an enlarged schematic diagram of the structure of the internal section B of the centrifugal clutch of the utility model;

[0019] In the figure: 1. flywheel; 2. gear; 3. housing; 4. fixing hole; 5. fixing screw; 6. connecting through hole; 7. gearbox input shaft; 8. movable pressure rod; 9. pedal connecting groove; 10. pressure plate; 11. friction disc; 12. bushing; 13. fixed disc; 14. diaphragm plate; 15. limit rod; 16. spring; 17. pressure block; 18. fastening screw. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-4The utility model provides an embodiment: a high-efficiency and energy-saving refrigerated transport vehicle centrifugal clutch, comprising a flywheel 1, a housing 3 is provided on one side end face of the flywheel 1, a connecting through hole 6 is provided on one side end face of the housing 3, a movable pressure rod 8 is provided inside the connecting through hole 6, a gearbox input shaft 7 is installed inside the movable pressure rod 8, a pressure plate 10 is installed on the gearbox input shaft 7, a diaphragm plate 14 is installed on one side end face of the pressure plate 10, a spring 16 is installed between the diaphragm plate 14 and the pressure plate 10, a pressure block 17 is installed on one side of the spring 16, and a fastening screw 18 is installed on one side of the pressure block 17. When in use, since the pressure block 17 is provided on one side of the spring 16, the fastening screw 18 is installed on one side of the pressure block 17, the fastening screw 18 is connected to the inner thread of the housing 3 and is rotatably connected to the surface of the pressure block 17, the engagement and separation of the clutch are completely controlled by the engine speed. When the engine speed is high, the clutch is engaged. The higher the speed, the greater the centrifugal force. The larger the speed, the tighter the clutch engagement. On the contrary, when the engine speed is lower than the idle speed, the clutch is in a disengaged state. When the foot pedal is stepped on, the movable pressure rod 8 will be driven to press the diaphragm plate 14 and the spring 16 inward, so that the friction disc 11 and the flywheel 1 are separated, and a certain distance will be generated between the friction disc 11 and the pressure plate 10 to avoid friction. The fastening screw 18 can be used to make the pressure block 17 exert downward pressure on the spring 16, so as to adjust the degree of weakness of the spring 16, thereby solving the problem that the centrifugal clutch in the prior art will weaken the pressure of the spring 16 and become weak due to frequent braking during use, thereby affecting its normal use. In addition, by respectively arranging the shaft sleeve 12 and the fixed plate 13 on both sides of the friction disc 11, the friction disc 11 will not be offset when it is connected to the pressure plate 10 through the gearbox input shaft 7, and the frequent opening and closing will not cause dislocation to affect its use.

[0022] See also Figure 1-Figure 4 The fastening screw 18 is threadedly connected to one end surface of the housing 3 , and one end surface of the fastening screw 18 is rotatably connected to the pressing block 17 .

[0023] See also Figure 1-Figure 4 A pedal connecting groove 9 is provided on the surface of the movable pressure rod 8, a friction disc 11 is provided on one side of the pressure plate 10, a shaft sleeve 12 is provided between the pressure plate 10 and the friction disc 11, and a fixed disc 13 is installed on one side of the friction disc 11.

[0024] See also Figure 1-Figure 4 A limit rod 15 is installed on the diaphragm plate 14.

[0025] See also Figure 1-Figure 4Gears 2 are arranged on the surface around the flywheel 1, and there are several gears 2. When the pedal is stepped on, the movable pressure rod 8 will be driven to press the diaphragm plate 14 and the spring 16 inward, so that the friction disc 11 and the flywheel 1 are separated, and a certain distance will be generated between the friction disc 11 and the pressure plate 10 to avoid friction. The fastening screw 18 can be used to make the pressure block 17 produce downward pressure on the spring 16, so as to adjust the degree of weakness of the spring 16, which solves the problem in the prior art that the pressure of the spring 16 becomes weak and weak due to frequent braking during use of the centrifugal clutch, thereby affecting its normal use.

[0026] See also Figure 1-Figure 4 The shell 3 is provided with fixing holes 4 on all sides, and fixing screws 5 are installed inside the fixing holes 4.

[0027] Working principle: When in use, a pressure block 17 is arranged on one side of the spring 16, and a fastening screw 18 is installed on one side of the pressure block 17. The fastening screw 18 is connected to the internal thread of the housing 3 and is rotationally connected to the surface of the pressure block 17. The engagement and separation of the clutch are completely controlled by the engine speed. When the engine speed is high, the clutch is engaged. The higher the speed, the greater the centrifugal force, and the tighter the clutch engagement. Conversely, when the engine speed is lower than the idle speed, the clutch is in a disengaged state. When the pedal is stepped on, the movable pressure rod 8 is driven to press the diaphragm plate 14 and the spring 16 inward, thereby separating the friction disc 11 from the flywheel 1, and the friction disc 11 from the pressure plate 1 0 will also have a certain distance to avoid friction, and the fastening screw 18 can be used to make the pressure block 17 generate downward pressure on the spring 16, so as to adjust the degree of weakness of the spring 16, thereby solving the problem that the centrifugal clutch in the prior art will weaken the pressure of the spring 16 due to frequent braking during use, thereby affecting its normal use, and by arranging the shaft sleeve 12 and the fixed plate 13 on both sides of the friction plate 11 respectively, the friction plate 11 will not be offset when connected with the pressure plate 10 through the gearbox input shaft 7, and the frequent opening and closing will not cause dislocation to affect its use.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A centrifugal clutch for a high-efficiency and energy-saving refrigerated transport vehicle, comprising a flywheel (1), characterized in that: A housing (3) is provided on one end face of the flywheel (1), a connecting through hole (6) is provided on one end face of the housing (3), a movable pressure rod (8) is provided inside the connecting through hole (6), a gearbox input shaft (7) is installed inside the movable pressure rod (8), a pressure plate (10) is installed on the gearbox input shaft (7), a diaphragm plate (14) is installed on one end face of the pressure plate (10), a spring (16) is installed between the diaphragm plate (14) and the pressure plate (10), a pressure block (17) is installed on one side of the spring (16), and a fastening screw (18) is installed on one side of the pressure block (17).

2. The high-efficiency and energy-saving centrifugal clutch for refrigerated transport vehicles according to claim 1, characterized in that: The fastening screw (18) is threadedly connected to one end surface of the housing (3), and one end surface of the fastening screw (18) is rotatably connected to the pressing block (17).

3. The high-efficiency and energy-saving centrifugal clutch for refrigerated transport vehicles according to claim 1, characterized in that: A pedal connection groove (9) is provided on the surface of the movable pressure rod (8), and a friction disc (11) is provided on one side of the pressure plate (10).

4. The high-efficiency and energy-saving centrifugal clutch for refrigerated transport vehicles according to claim 3, characterized in that: A shaft sleeve (12) is arranged between the pressure plate (10) and the friction disk (11), and a fixed disk (13) is installed on one side of the friction disk (11).

5. The high-efficiency and energy-saving centrifugal clutch for refrigerated transport vehicles according to claim 1, characterized in that: A limit rod (15) is installed on the diaphragm plate (14).

6. The high-efficiency and energy-saving centrifugal clutch for refrigerated transport vehicles according to claim 1, characterized in that: Gears (2) are arranged on the surfaces of all four sides of the flywheel (1), and a plurality of gears (2) are arranged.

7. The high-efficiency and energy-saving centrifugal clutch for refrigerated transport vehicles according to claim 1, characterized in that: The shell (3) is provided with fixing holes (4) on all four sides, and fixing screws (5) are installed inside the fixing holes (4).

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