Road construction cutting machine

Abstract

The utility model discloses a road construction cutting machine which comprises a fixed bottom plate, a handrail arranged at the top end of the fixed bottom plate, a first dust cover and a second dust cover arranged at the bottom end of the fixed bottom plate, and a third dust cover arranged at the top end of the fixed bottom plate. The collision buffering assemblies are fixedly connected to the four corners of the fixed bottom plate; the movable driving assembly is fixedly connected to the inner side of the dustproof cover I; the steering driving assembly is fixedly connected to the inner side of the dustproof cover II; the lifting driving assembly is fixedly connected to the inner side of the dustproof cover III; the pressure sensing buffering assembly is fixedly connected to the bottom end of the lifting driving assembly; and the cutting machine is fixedly connected to the bottom end of the pressure-sensitive buffering assembly. Compared with the prior art, the cutting device has the advantages that a cutting route can be flexibly steered and calibrated, collision can be prevented, accidental impact can be relieved, buffering downward pressure can be monitored, a cutting disc is protected, and the cutting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction, in particular to a road construction cutting machine. Background Technique

[0002] After a highway is completed and opened to traffic, due to the wear and impact of vehicle wheels, it is eroded and weathered by natural forces such as rainstorms, floods, sandstorms, ice and snow, sunlight, ice melting, etc., as well as human damage and some defects left during construction. The quality of highway use will gradually decrease. Therefore, after the highway is completed and opened to traffic, maintenance and repair measures must be taken and continuous renewal and improvement must be carried out. In highway maintenance and repair, a grooving machine is often used to groove and clean the damaged road surface into a regular shape before patching.

[0003] In the prior art, the patent number CN221029504U discloses a grooving device for road construction that can cool the cutter head, belonging to the technical field of road construction, including a mobile trolley. A cutting machine is arranged on the top of the mobile trolley. A lifting bracket is installed at the corresponding position of the cutting machine on the top of the mobile trolley. The cutting machine is movably connected with the mobile trolley through the lifting bracket. A protective shell is installed at the blade of the cutting machine. A water tank is fixedly installed on the top of the mobile trolley. By setting a water delivery component and a semiconductor refrigeration sheet, when using this device to groove the road, the semiconductor refrigeration sheet can refrigerate the water inside the water tank, and the refrigerated water can be sprayed onto the blade of the cutting machine through the water delivery component, thereby cooling the blade of the cutting machine to prevent the cutting machine from affecting its normal service life due to overheating of its blade during long-term use.

[0004] However, the patents in the prior art have the following several disadvantages:

[0005] (1) This kind of grooving device for road construction that can cool the cutter head does not have a component that can adjust the steering. Since the grooving device for road construction that can cool the cutter head needs to keep straight grooving, its rollers generally do not have a steering effect, resulting in the need to manually lift and move the grooving device for road construction that can cool the cutter head when calibrating the grooving line, which is time-consuming and laborious.

[0006] (2) This kind of grooving device for road construction that can cool the cutter head does not have a collision buffer component. When operating on the road, it is extremely vulnerable to accidental collisions. Without a collision buffer component, the grooving device for road construction that can cool the cutter head lacks a certain degree of safety protection.

[0007] (3) This type of grooving device for road construction that can cool the tool head does not have a pressure-sensing buffer component. When the lifting drive component drives the cutting machine to press down, a large pressure will be generated between the cutting machine and the ground. If this pressure cannot be monitored and buffered, the cutting machine may drop too quickly, causing damage to the cutting disc, or drop too slowly, reducing the cutting efficiency. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the above technical deficiencies and provide a road construction cutting machine that can flexibly turn and calibrate the cutting route, can protect against collisions and reduce accidental impacts, can monitor and buffer the downward pressure, protect the cutting disc, and improve the cutting efficiency.

[0009] To solve the above problems, the technical solution of the present invention is: a road construction cutting machine, including: a fixed bottom plate, with a handrail provided at the top of the fixed bottom plate, a dust cover one and a dust cover two provided at the bottom of the fixed bottom plate, and a dust cover three provided at the top of the fixed bottom plate; a collision buffer component fixedly connected to the four corners of the fixed bottom plate; a moving drive component fixedly connected to the inside of the dust cover one; a steering drive component fixedly connected to the inside of the dust cover two; a lifting drive component fixedly connected to the inside of the dust cover three; a pressure-sensing buffer component fixedly connected to the bottom of the lifting drive component; and a cutting machine fixedly connected to the bottom of the pressure-sensing buffer component.

[0010] Further, the collision buffer component includes:

[0011] A buffer bin located at the four corners of the fixed bottom plate, with a sliding shaft fixedly connected to the inside of the buffer bin;

[0012] A slider slidably connected to the outside of the sliding shaft and slidably connected to the buffer bin;

[0013] A first spring fixedly connected between the sliders, and the first spring is provided with a damper;

[0014] A first support rod rotatably connected to one side of the slider;

[0015] An anti-collision block slidably connected to the inside of the buffer bin and rotatably connected to one end of the first support rod.

[0016] Further, the moving drive component includes:

[0017] A first motor fixedly connected to the bottom of the fixed bottom plate, with drive wheels provided on both sides of the first motor;

[0018] Support frame, the support frame is fixedly connected to the bottom end of the fixed base plate;

[0019] Rotating shaft, the rotating shaft is rotatably connected to the inside of the support frame, the rotating shaft is rotatably connected to the first dust cover, and moving wheels are provided at both ends of the rotating shaft;

[0020] Drive belt, the drive belt is located outside the rotating shaft and the drive wheel.

[0021] Further, the steering drive assembly includes:

[0022] Second motor, the second motor is fixedly connected to the bottom end of the fixed base plate, and a gear is provided on one side of the second motor;

[0023] Chute, the chute is located at the bottom end of the fixed base plate;

[0024] Slide post, the slide post is slidably connected to the inside of the chute;

[0025] Connecting rod, the connecting rod is fixedly connected to the bottom end of the slide post, the connecting rod is slidably connected to the second dust cover, a tooth groove is provided at the bottom end of the connecting rod, and the tooth groove meshes with the gear;

[0026] Limit shaft, the limit shaft is fixedly connected to the bottom end of the fixed base plate;

[0027] Roller frame, the roller frame is rotatably connected to the outside of the limit shaft, the roller frame is provided with an angle sensor, the roller frame is provided with a limit groove, the limit groove is slidably connected to the slide post, and a steering wheel is rotatably connected to the bottom end of the roller frame.

[0028] Further, the lifting drive assembly includes:

[0029] Third motor, the third motor is fixedly connected to the top end of the fixed base plate, and a first bevel gear is provided on one side of the third motor;

[0030] Second rotating shaft, the second rotating shaft is rotatably connected to the top end of the fixed base plate, the second rotating shaft is rotatably connected to the third dust cover, a second bevel gear is provided on the outside of the second rotating shaft, the second bevel gear meshes with the first bevel gear, and a threaded shaft is fixedly connected to the top end of the second rotating shaft;

[0031] Limit post, the limit post is fixedly connected to the top end of the fixed base plate;

[0032] Lifting plate, the lifting plate is slidably connected to the outside of the limit post, and the lifting plate is threadedly connected to the threaded shaft.

[0033] Further, the pressure-sensing buffer assembly includes:

[0034] Connecting shaft, the connecting shaft is fixedly connected to the bottom end of the lifting plate;

[0035] A connecting pipe, the connecting pipe is slidably connected to the outside of the connecting shaft;

[0036] A first pressure sensor, the first pressure sensor is fixedly connected to the inner bottom of the connecting pipe;

[0037] A second spring, the second spring is fixedly connected between the connecting shaft and the first pressure sensor, and the second spring is provided with a damper:

[0038] A buffer plate, the buffer plate is fixedly connected to the bottom end of the connecting pipe;

[0039] A sliding rod, the sliding rod is fixedly connected to the top end of the buffer plate;

[0040] A connecting ring, the connecting ring is slidably connected to the outside of the sliding rod;

[0041] A second support rod, the second support rod is rotatably connected between the lifting plate and the buffer plate;

[0042] A second pressure sensor, the second pressure sensor is fixedly connected to one end of the sliding rod;

[0043] A third spring, the third spring is fixedly connected between the connecting ring and the second pressure sensor, and the third spring is provided with a damper.

[0044] The advantages of the present utility model compared with the prior art are as follows:

[0045] (1) The road construction cutting machine of the present utility model is provided with a moving driving component and a steering driving component, so that the road construction cutting machine can turn flexibly to calibrate the cutting line, and can also lock the steering, so that the road construction cutting machine can drive straight stably to prevent skew cutting.

[0046] (2) The road construction cutting machine of the present utility model is provided with a collision buffer component. When the road construction cutting machine is accidentally collided, the collision buffer component can effectively reduce the impact and play a certain protective role for the road construction cutting machine.

[0047] (3) The road construction cutting machine of the present utility model is provided with a pressure sensing buffer component. When the cutting machine contacts the ground, the pressure sensing buffer component can monitor the magnitude of the downward pressure to control the start of the lifting driving component and buffer the cutting vibration, protect the cutting machine and prevent damage to the cutting disc. Description of the Drawings

[0048] Figure 1 is a three-dimensional view of a road construction cutting machine of the present utility model Figure 1 .

[0049] Figure 2 is a three-dimensional view of a road construction cutting machine of the present utility modelFigure 2 。

[0050] Figure 3 is a cross-section of a road construction cutting machine of the present utility model Figure 1 。

[0051] Figure 4 is a cross-section of a road construction cutting machine of the present utility model Figure 2 。

[0052] Figure 5 is a cross-section of a road construction cutting machine of the present utility model Figure 3 。

[0053] Figure 6 is a cross-section of a road construction cutting machine of the present utility model Figure 4 。

[0054] As shown in the figure: 1. Fixed base plate; 2. Handrail; 3. Dust-proof cover one; 4. Dust-proof cover two; 5. Dust-proof cover three; 6. Collision buffer assembly; 7. Moving drive assembly; 8. Steering drive assembly; 9. Lifting drive assembly; 10. Pressure-sensing buffer assembly; 11. Cutting machine; 12. Buffer bin; 13. Slide shaft; 14. Slide block; 15. Spring one; 16. Support rod one; 17. Anti-collision block; 18. Motor one; 19. Driving wheel; 20. Support frame; 21. Rotating shaft; 22. Transmission belt; 23. Moving wheel; 24. Motor two; 25. Gear; 26. Chute; 27. Slide post; 28. Connecting rod; 29. Tooth groove; 30. Limit shaft; 31. Roller frame; 32. Limit groove; 33. Steering wheel; 34. Motor three; 35. Bevel gear one; 36. Rotating shaft two; 37. Bevel gear two; 38. Threaded shaft; 39. Limit post; 40. Lifting plate; 41. Connecting shaft; 42. Connecting pipe; 43. Pressure sensor one; 44. Spring two; 45. Buffer plate; 46. Slide rod; 47. Connecting ring; 48. Support rod two; 49. Pressure sensor two; 50. Spring three. Detailed implementation manners

[0055] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0056] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0057] As Figures 1 to 6 shown, a road construction cutting machine includes: a fixed bottom plate 1, a handrail 2 is provided at the top end of the fixed bottom plate 1, a dust-proof cover one 3 and a dust-proof cover two 4 are provided at the bottom end of the fixed bottom plate 1, and a dust-proof cover three 5 is provided at the top end of the fixed bottom plate 1; a collision buffer assembly 6, the collision buffer assembly 6 is fixedly connected to the four corners of the fixed bottom plate 1; a moving drive assembly 7, the moving drive assembly 7 is fixedly connected to the inside of the dust-proof cover one 3; a steering drive assembly 8, the steering drive assembly 8 is fixedly connected to the inside of the dust-proof cover two 4; a lifting drive assembly 9, the lifting drive assembly 9 is fixedly connected to the inside of the dust-proof cover three 5; a pressure-sensitive buffer assembly 10, the pressure-sensitive buffer assembly 10 is fixedly connected to the bottom end of the lifting drive assembly 9; a cutting machine 11, the cutting machine 11 is fixedly connected to the bottom end of the pressure-sensitive buffer assembly 10.

[0058] The lifting drive assembly 9 includes: a motor three 34, the motor three 34 is fixedly connected to the top end of the fixed bottom plate 1, and a bevel gear one 35 is provided on one side of the motor three 34; a rotating shaft two 36, the rotating shaft two 36 is rotatably connected to the top end of the fixed bottom plate 1, the rotating shaft two 36 is rotatably connected to the dust-proof cover three 5, a bevel gear two 37 is provided on the outer side of the rotating shaft two 36, the bevel gear two 37 meshes with the bevel gear one 35, and a fixedly connected threaded shaft 38 is provided at the top end of the rotating shaft two 36; a limit post 39, the limit post 39 is fixedly connected to the top end of the fixed bottom plate 1; a lifting plate 40, the lifting plate 40 is slidably connected to the outer side of the limit post 39, and the lifting plate 40 is threadedly connected to the threaded shaft 38.

[0059] The pressure-sensitive buffer assembly 10 includes: a connecting shaft 41, the connecting shaft 41 is fixedly connected to the bottom end of the lifting plate 40; a connecting pipe 42, the connecting pipe 42 is slidably connected to the outer side of the connecting shaft 41; a pressure sensor one 43, the pressure sensor one 43 is fixedly connected to the inner bottom of the connecting pipe 42; a spring two 44, the spring two 44 is fixedly connected between the connecting shaft 41 and the pressure sensor one 43, and the spring two 44 is provided with a damper; a buffer plate 45, the buffer plate 45 is fixedly connected to the bottom end of the connecting pipe 42; a sliding rod 46, the sliding rod 46 is fixedly connected to the top end of the buffer plate 45; a connecting ring 47, the connecting ring 47 is slidably connected to the outer side of the sliding rod 46; a support rod two 48, the support rod two 48 is rotatably connected between the lifting plate 40 and the buffer plate 45; a pressure sensor two 49, the pressure sensor two 49 is fixedly connected to one end of the sliding rod 46; a spring three 50, the spring three 50 is fixedly connected between the connecting ring 47 and the pressure sensor two 49, and the spring three 50 is provided with a damper.

[0060] The steering drive assembly 8 includes: a motor 24, which is fixedly connected to the bottom end of the fixed base plate 1, and a gear 25 is provided on one side of the motor 24; a slide groove 26, which is located at the bottom end of the fixed base plate 1; a slide column 27, which is slidably connected to the inner side of the slide groove 26; a connecting rod 28, which is fixedly connected to the bottom end of the slide column 27, and the connecting rod 28 is slidably connected to the dust cover 24, and a tooth groove 29 is provided at the bottom end of the connecting rod 28, and the tooth groove 29 is meshed with the gear 25; a limit shaft 30, which is fixedly connected to the bottom end of the fixed base plate 1; a roller frame 31, which is rotatably connected to the outer side of the limit shaft 30, and the roller frame 31 has an angle sensor, and the roller frame 31 is provided with a limit groove 32, and the limit groove 32 is slidably connected to the slide column 27, and the bottom end of the roller frame 31 is provided with a rotatably connected steering wheel 33.

[0061] The mobile driving assembly 7 includes: a motor 18, which is fixedly connected to the bottom end of the fixed base plate 1, and driving wheels 19 are provided on both sides of the motor 18; a support frame 20, which is fixedly connected to the bottom end of the fixed base plate 1; a rotating shaft 21, which is rotatably connected to the inner side of the support frame 20, the rotating shaft 21 is rotatably connected to the dust cover 3, and moving wheels 23 are provided at both ends of the rotating shaft 21; a transmission belt 22, which is located on the outside of the rotating shaft 21 and the driving wheel 19.

[0062] The collision buffer assembly 6 includes: a buffer bin 12, the buffer bin 12 is located at the four corners of the fixed base plate 1, and a fixedly connected sliding shaft 13 is provided on the inner side of the buffer bin 12; a slider 14, the slider 14 is slidably connected to the outer side of the sliding shaft 13, and the slider 14 is slidably connected to the buffer bin 12; a spring 15, the spring 15 is fixedly connected between the sliders 14, and the spring 15 is provided with a damper; a support rod 16, the support rod 16 is rotatably connected to one side of the slider 14; an anti-collision block 17, the anti-collision block 17 is slidably connected to the inner side of the buffer bin 12, and the anti-collision block 17 is rotatably connected to one end of the support rod 16.

[0063] In specific use, the starting motor 18 rotates the driving wheel 19, and the rotation shaft 21 is controlled to rotate through the transmission belt 22, so that the moving wheel 23 rotates to drive the road construction cutting machine forward, and the driving motor 24 rotates the gear 25. The gear 25 drives the connecting rod 28 to move left and right through the tooth groove 29, and the roller frame 31 is pushed to rotate around the limit axis 30 through the sliding column 27. The rotation angle can be monitored by the angle sensor provided by the roller frame 31, which is convenient for calibrating the cutting line.

[0064] After the calibration is completed, the motor 24 is reset, and the road construction cutting machine can only move forward.

[0065] The starting motor three 34 causes the bevel gear one 35 to rotate. Through the bevel gear two, the rotating shaft two 36 and the threaded shaft 38 rotate, driving the lifting plate 40 to move downward, and starting the cutting machine 11 to start cutting the ground.

[0066] When the cutting machine 11 contacts the ground, the connecting shaft 41 slides in the connecting pipe 42 to squeeze the spring two 44, and completes shock absorption and buffering through the damper of the spring two 44. The pressure index can be monitored through the pressure sensor one 43. At the same time, the support rod two 48 rotates, pushing the connecting ring 47 to slide and squeeze the spring three 50, and completes shock absorption and buffering through the damper of the spring three 50. The pressure index can be monitored through the pressure sensor two 49. When the pressure thresholds preset by the pressure sensor one 43 and the pressure sensor two 49 are monitored simultaneously, the pressure sensor one 43 and the pressure sensor two 49 can control the motor three 34 to stop rotating briefly. When the values monitored by the pressure sensor one 43 and the pressure sensor two 49 gradually decrease, the pressure sensor one 43 and the pressure sensor two 49 control the motor three 34 to resume rotating, and the cutting machine 11 can continue to press down to complete the cutting.

[0067] When the anti-collision block 17 is impacted, it slides in the buffer bin 12, causing the support rod one 16 to rotate, pushing the slider 14 to slide and squeeze the spring one 15, and completes collision buffering through the damper of the spring one 15, improving the anti-collision ability of the road construction cutting machine.

[0068] The electrical components appearing in this article are all electrically connected to the external main controller and 220V mains electricity. And the main controller can be a conventional known device such as a computer for control. The detailed descriptions of known functions and known components are omitted in the specific implementation manners of the present disclosure. To ensure the compatibility of the device, the operating means adopted are consistent with the parameters of market instruments.

[0069] The pressure sensor and the angle sensor are both existing products on the market, and their connection methods and control methods are all prior arts, and will not be elaborated here.

[0070] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road construction cutting machine, characterized in that, Including: A fixed base plate (1), with a handrail (2) provided at the top of the fixed base plate (1), a first dust cover (3) and a second dust cover (4) provided at the bottom of the fixed base plate (1), and a third dust cover (5) provided at the top of the fixed base plate (1); a collision buffer assembly (6) fixedly connected to the four corners of the fixed base plate (1); a moving drive assembly (7) fixedly connected to the inside of the first dust cover (3); a steering drive assembly (8) fixedly connected to the inside of the second dust cover (4); a lifting drive assembly (9) fixedly connected to the inside of the third dust cover (5); a pressure-sensitive buffer assembly (10) fixedly connected to the bottom end of the lifting drive assembly (9); and a cutting machine (11) fixedly connected to the bottom end of the pressure-sensitive buffer assembly (10).

2. The road construction cutting machine according to claim 1, wherein: The collision buffer assembly (6) includes: A buffer bin (12) located at the four corners of the fixed base plate (1), with a sliding shaft (13) fixedly connected to the inside of the buffer bin (12); A slider (14) slidably connected to the outside of the sliding shaft (13), and the slider (14) is slidably connected to the buffer bin (12); A first spring (15) fixedly connected between the sliders (14), and the first spring (15) is equipped with a damper; A first support rod (16) rotatably connected to one side of the slider (14); An anti-collision block (17) slidably connected to the inside of the buffer bin (12), and the anti-collision block (17) is rotatably connected to one end of the first support rod (16).

3. The road construction cutting machine according to claim 1, characterized in that: The moving drive assembly (7) includes: A first motor (18) fixedly connected to the bottom end of the fixed base plate (1), with drive wheels (19) provided on both sides of the first motor (18); A support frame (20) fixedly connected to the bottom end of the fixed base plate (1); A rotating shaft (21) rotatably connected to the inside of the support frame (20), the rotating shaft (21) is rotatably connected to the first dust cover (3), and moving wheels (23) are provided at both ends of the rotating shaft (21); A transmission belt (22) located outside the rotating shaft (21) and the drive wheels (19).

4. A road construction cutting machine according to claim 1, characterized in that: The steering drive assembly (8) includes: A second motor (24) fixedly connected to the bottom end of the fixed base plate (1), with a gear (25) provided on one side of the second motor (24); A chute (26) located at the bottom end of the fixed base plate (1); A sliding column (27) slidably connected to the inside of the chute (26); Connecting rod (28), the connecting rod (28) is fixedly connected to the bottom end of the sliding column (27), the connecting rod (28) is slidably connected to the second dust cover (4), a tooth groove (29) is provided at the bottom end of the connecting rod (28), and the tooth groove (29) meshes with the gear (25); Limit shaft (30), the limit shaft (30) is fixedly connected to the bottom end of the fixed base plate (1); Roller frame (31), the roller frame (31) is rotatably connected to the outside of the limit shaft (30), the roller frame (31) is equipped with an angle sensor, the roller frame (31) is provided with a limit groove (32), the limit groove (32) is slidably connected to the sliding column (27), and a rotatably connected steering wheel (33) is provided at the bottom end of the roller frame (31).

5. The road construction cutting machine according to claim 1, characterized in that: The lifting drive assembly (9) includes: Motor three (34), the motor three (34) is fixedly connected to the top end of the fixed base plate (1), and a first bevel gear (35) is provided on one side of the motor three (34); Rotating shaft two (36), the rotating shaft two (36) is rotatably connected to the top end of the fixed base plate (1), the rotating shaft two (36) is rotatably connected to the third dust cover (5), a second bevel gear (37) is provided on the outside of the rotating shaft two (36), the second bevel gear (37) meshes with the first bevel gear (35), and a fixedly connected threaded shaft (38) is provided at the top end of the rotating shaft two (36); Limit post (39), the limit post (39) is fixedly connected to the top end of the fixed base plate (1); Lifting plate (40), the lifting plate (40) is slidably connected to the outside of the limit post (39), and the lifting plate (40) is threadedly connected to the threaded shaft (38).

6. The road construction cutting machine according to claim 5, characterized in that: The pressure sensing and buffering assembly (10) includes: Connecting shaft (41), the connecting shaft (41) is fixedly connected to the bottom end of the lifting plate (40); Connecting pipe (42), the connecting pipe (42) is slidably connected to the outside of the connecting shaft (41); Pressure sensor one (43), the pressure sensor one (43) is fixedly connected to the inner bottom of the connecting pipe (42); Spring two (44), the spring two (44) is fixedly connected between the connecting shaft (41) and the pressure sensor one (43), and the spring two (44) is provided with a damper: Buffer plate (45), the buffer plate (45) is fixedly connected to the bottom end of the connecting pipe (42); Slide bar (46), the slide bar (46) is fixedly connected to the top end of the buffer plate (45); Connecting ring (47), the connecting ring (47) is slidably connected to the outside of the slide bar (46); Support rod two (48), the support rod two (48) is rotatably connected between the lifting plate (40) and the buffer plate (45); Pressure sensor two (49), the pressure sensor two (49) is fixedly connected to one end of the slide bar (46); Spring three (50), the spring three (50) is fixedly connected between the connecting ring (47) and the pressure sensor two (49), and the spring three (50) is provided with a damper.

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