Corrugated pipe performance detection device

Abstract

The invention discloses a corrugated pipe performance detection device, and relates to the technical field of corrugated pipe performance detection, the corrugated pipe performance detection device comprises a rack, the upper end of the rack is provided with a rope take-up and pay-off module, and the output end of the rope take-up and pay-off module is connected with a drop hammer assembly; the outer sides of the four guide rod pieces are jointly sleeved with a plurality of balance weight plates in a sliding mode, and a connecting assembly is installed between each balance weight plate and the corresponding vertical rod and between each balance weight plate and the corresponding drop hammer assembly. And a supplementing module is installed at the lower end of the vertical rod and comprises a shell fixed to the lower end of the vertical rod, a storage cavity and a suction cavity are reserved in the shell from top to bottom, and lubricating oil in the storage cavity is sequentially injected into the suction cavity and the guide rod piece through a driving assembly. According to the corrugated pipe performance detection device, through the arrangement of the connecting assembly, flexible and rapid increase and decrease of the balance weight plate are achieved, graded adjustment of the detection force is achieved, the detection flexibility is improved, self-lubrication is achieved through cooperation of the drop hammer assembly and the supplementing module, and long-term smooth operation of the balls is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of corrugated pipe performance detection, in particular to a corrugated pipe performance detection device. BACKGROUND

[0002] Double-wall corrugated pipes are generally buried underground at a certain depth. When backfilling, stones may fall on the outer surface of the pipe material. In order to prevent the pipe material from being deformed by the upper soil after backfilling, the double-wall corrugated pipe is sampled before installation, that is, a large hammer is used to knock the pipe material at each position for quality detection.

[0003] The existing impact resistance detection device mainly uses a fixed weight drop hammer for impact test, which has the limitation that the detection force cannot be conveniently adjusted. For example, in the patent application with the name of "Guiding bearing impact resistance test device" and the authorization announcement number CN221571804U and the authorization announcement date of 2024-08-20, the required weight blocks are placed in the bearing box in sequence, then the locking sleeve ring is installed into the first positioning column, and the bolts on the locking sleeve ring are tightened to fix the weight blocks. Although the above method can adjust the weight, the adjustment method is inconvenient, which affects the test efficiency. At the same time, the outer side of the bearing box is provided with a plurality of sliding rails, the upper and lower ends of the sliding rails are respectively fixedly connected with the top of the support frame and the upper surface inner wall of the test table, the inner walls of the plurality of sliding rails are slidably connected with the bearing box, and the sliding rails ensure that the bearing box remains vertical during falling and impact. However, due to the lack of effective lubrication mechanism, it is difficult for the operator to lubricate the sliding rails and the bearing box in time during actual use. With the increase of the detection times, the friction between the sliding rails and the bearing box increases, which affects the performance detection result.

[0004] Therefore, we propose a corrugated pipe performance detection device to solve the problems mentioned above. SUMMARY

[0005] 1. Technical problem to be solved by the application: The purpose of the present application is to provide a corrugated pipe performance detection device to solve the problems in the prior art mentioned in the background.

[0006] 2. Technical solution: In order to achieve the above purpose, the present application provides the following technical solution: a corrugated pipe performance detection device, comprising a rack, a rope winding and unwinding module is installed at the upper end of the rack, and a drop hammer assembly is connected to the output end of the rope winding and unwinding module, a fixing table is installed inside the rack, and a receiving assembly is installed below the fixing table. The upper end of the fixed table is fixed with four guide rods and two vertical rods between the rack, the outer side of the four guide rods is collectively and slidably provided with a plurality of counterweight plates, and each counterweight plate is installed with a set of connecting assembly between the vertical rod and the drop hammer assembly; The lower end of the vertical rod is installed with a supplement module, the supplement module comprises a shell fixed at the lower end of the vertical rod, a storage cavity and a pumping cavity are respectively reserved in the shell from top to bottom, a driving assembly is installed in the pumping cavity, and the lubricating oil in the storage cavity is sequentially injected into the pumping cavity and the inside of the guide rod through the driving assembly.

[0007] Further, the drop hammer assembly comprises a connecting column connected with the rope winding and unwinding module output end, the lower end of the connecting column is fixed with a base, the lower end of the base is detachably installed with a drop hammer body, and the left and right sides of the base are elastically and rotationally installed with pawl pieces.

[0008] Through the above technical scheme, the rope winding and unwinding module can drive the connecting column, the base, the drop hammer body and the pawl piece to move up and down synchronously.

[0009] Further, the receiving assembly comprises a hydraulic cylinder fixed on the inner side of the bottom of the rack, a V-shaped receiving table is installed on the output end of the hydraulic cylinder, a limiting rod is slidably arranged in the inside of the side edge of the V-shaped receiving table, and the limiting rod is fixedly installed in the inside of the rack.

[0010] Through the above technical scheme, the corrugated pipe can be placed on the V-shaped receiving table, and the height position of the corrugated pipe can be adjusted by the hydraulic cylinder.

[0011] Further, the guide rod comprises a guide sleeve fixed in the inside of the rack, a plurality of balls are movably installed on the outer wall of the guide sleeve, the plurality of balls are uniformly distributed on the guide sleeve, a sponge ring is installed in the inside of the guide sleeve, and the plurality of balls are attached to the outer wall of the sponge ring.

[0012] Through the above technical scheme, the guide rod can guide and limit the counterweight plate, the friction with the counterweight plate is reduced by using the balls, and the smooth running of the balls is ensured by storing lubricating oil in the sponge ring.

[0013] Further, the storage cavity and the pumping cavity are communicated through a one-way valve, the pumping cavity is communicated with a supplement pipe through an opposite one-way valve, the supplement pipe is fixedly installed in the inside of the sponge ring, and a plurality of through holes are uniformly arranged on the side of the supplement pipe.

[0014] Through the above technical scheme, the lubricating oil in the storage cavity can be supplemented to the sponge ring through the pumping cavity and the supplement pipe in sequence.

[0015] Further, the driving assembly comprises a driving piece and a piston piece, the driving piece comprises a cam roller rotatably installed on the shell through a torsion spring, and the end of the cam roller is fixedly connected with a ratchet wheel outside the shell, the pawl piece is matched with the ratchet wheel after the drop hammer assembly is lowered, and the ratchet wheel is rotated in the upward movement process.

[0016] Through the above technical scheme, when the drop hammer assembly drives the pawl piece to match the ratchet wheel, the ratchet wheel is rotated in the upward movement process, the cam roller is rotated after the ratchet wheel is rotated, and the cam roller is reset under the action of the torsion spring when it is not forced.

[0017] Further, the piston piece comprises a piston plate slidingly installed inside the suction cavity, the upper end of the piston plate is fixed with a movable rod, the upper end of the movable rod is externally sleeved with a fixed rod, the fixed rod is fixed in the shell, a pressure spring is connected between the movable rod and the fixed rod, and the cam roller is used for adjusting the height position of the piston plate.

[0018] Through the above technical scheme, when the cam roller is rotated, the piston plate is driven to move downward, and the piston plate is reset to move upward under the action of the pressure spring when the cam roller is reset.

[0019] Further, the middle part of the counterweight plate is provided with a through port, and the opening area of the through port is greater than the cross section of the connecting column.

[0020] Through the above technical scheme, the connecting column is not affected to extend into the inside of the counterweight plate.

[0021] Further, the connecting assembly comprises a connecting rod slidingly installed inside the counterweight plate, the connecting rod is provided with two, and the two connecting rods are symmetrically distributed about the center of the counterweight plate; The connecting assembly further comprises a connecting groove one provided on the side of the vertical rod and a connecting groove two provided inside the drop hammer body, the inside of the connecting groove one and the connecting groove two is respectively provided with a through electromagnetic iron one and a through electromagnetic iron two; The connecting rod is made of iron, and when the connecting rod corresponds to the connecting groove one or the connecting groove two, the through electromagnetic iron one or the through electromagnetic iron two is started, and the connecting rod extends into the connecting groove one or the connecting groove two.

[0022] Through the above technical scheme, the counterweight plate on the drop hammer assembly can be automatically increased or decreased through the connecting assembly.

[0023] 3. Beneficial effects: Compared with the prior art, the corrugated pipe performance detection device provided by the technical scheme has the following advantages. (1) The falling hammer assembly is pulled by the rope winding and unwinding module, at this time, the counterweight plate is connected with the falling hammer assembly through the cooperation of the second connecting groove, the second electromagnet and the connecting rod in the connecting assembly, so that the falling hammer assembly is automatically weighted, when the counterweight plate is connected with the vertical rod through the cooperation of the connecting rod, the first connecting groove and the connecting rod in the connecting assembly, the falling hammer assembly is automatically lightened, so that the counterweight plate can be flexibly and quickly increased or decreased through the connecting assembly, breaking through the limitation of fixed weight and inconvenient adjustment of the traditional falling hammer device, improving the detection flexibility, realizing the step-by-step adjustment of the detection force, and adapting to the detection of corrugated pipes with different materials and wall thicknesses. (2) The counterweight plate is guided by the guide rod, improving the stability of the counterweight plate when falling downward and lifting upward, and reducing the friction between the guide rod and the counterweight plate under the action of the uniformly distributed balls, prolonging the service life of the device and reducing the maintenance cost, at the same time, the sponge ring stores lubricating oil, when the balls rotate, the long-term smooth operation can be ensured through the contact with the sponge ring. (3) After the falling hammer impact is completed, the pawl is engaged with the ratchet wheel during the upward movement of the falling hammer assembly, and drives the ratchet wheel to rotate during the continuous upward movement, and in turn drives the cam roller to rotate synchronously, the cam roller rotates and pushes the piston to compress the suction cavity, and the lubricating oil in the suction cavity is injected into the sponge ring of the guide rod through the supplement pipe, realizing automatic supplement of the lubricating oil, using the mechanical energy of the falling hammer assembly during upward movement to drive the driving part to work, converting the kinetic energy into hydraulic energy, realizing kinetic energy recovery, promoting the green development of the industry, and reducing the impact on the falling hammer assembly during the falling impact operation through the cooperation of the pawl and the ratchet wheel. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the internal structure of the rack of the present application; Figure 3 It is a schematic diagram of the front view structure of the rack of the present application; Figure 4 It is a schematic diagram of the structure of the falling hammer assembly of the present application; Figure 5 It is a schematic diagram of the structure of the counterweight plate of the present application; Figure 6 It is a schematic diagram of the side cross-sectional structure of the counterweight plate of the present application; Figure 7 It is a schematic diagram of the internal structure of the shell of the present application; Figure 8Figure is a schematic view of the pawl and ratchet gear cooperation structure of the present application; Figure 9 Figure is a schematic view of the explosion structure of the piston of the present application; Figure 10 Figure is a schematic view of the downward sectional structure of the guide sleeve of the present application.

[0025] In the figure: 1, frame; 11, fixed platform; 2, rope winding and unwinding module; 3, drop hammer assembly; 31, connecting column; 32, base; 33, drop hammer body; 34, pawl; 4, receiving assembly; 41, hydraulic cylinder; 42, V-shaped receiving platform; 43, limiting rod; 5, guide rod; 51, guide sleeve; 52, ball; 53, sponge ring; 6, counterweight plate; 61, through opening; 7, supplement module; 71, shell; 72, storage cavity; 73, drawing cavity; 74, driving assembly; 741, driving member; 7411, cam roller; 7412, ratchet gear; 742, piston; 7421, piston plate; 7422, movable rod; 7423, fixed rod; 7424, pressure spring; 75, supplement pipe; 751, through hole; 8, vertical rod; 9, connecting assembly; 91, connecting rod; 92, connecting groove one; 93, through electromagnet one; 94, connecting groove two; 95, through electromagnet two. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0027] Embodiment: Please refer to Figures 1-10The application provides a technical scheme: a corrugated pipe performance detection device, which comprises a rack 1, a rope winding and unwinding module 2 is installed at the upper end of the rack 1, a drop hammer assembly 3 is connected to the output end of the rope winding and unwinding module 2, a fixing table 11 is installed in the rack 1, and a receiving assembly 4 is installed below the fixing table 11; the drop hammer assembly 3 comprises a connecting column 31 connected to the output end of the rope winding and unwinding module 2, a base 32 is fixed to the lower end of the connecting column 31, a drop hammer body 33 is detachably installed at the lower end of the base 32, and a pawl 34 is elastically rotationally installed on the left and right sides of the base 32; the receiving assembly 4 comprises a hydraulic cylinder 41 fixed to the inner side of the bottom of the rack 1, a V-shaped receiving table 42 is installed at the output end of the hydraulic cylinder 41, a limiting rod 43 is slidably arranged in the inner side of the V-shaped receiving table 42, and the limiting rod 43 is fixedly installed in the inner side of the rack 1; a through opening 61 is formed in the middle of a counterweight plate 6, and the opening area of the through opening 61 is greater than the cross section of the connecting column 31; the connecting assembly 9 comprises a connecting rod 91 horizontally and slidably installed in the inner side of the counterweight plate 6, two connecting rods 91 are arranged, and the two connecting rods 91 are symmetrically distributed about the center of the counterweight plate 6; the connecting assembly 9 further comprises a connecting groove one 92 formed in the side of the vertical rod 8 and a connecting groove two 94 formed in the inner side of the drop hammer body 33, and a through electromagnet one 93 and a through electromagnet two 95 are arranged in the inner sides of the connecting groove one 92 and the connecting groove two 94 respectively; the connecting rod 91 is made of iron, and when the connecting rod 91 corresponds to the connecting groove one 92 or the connecting groove two 94, the through electromagnet one 93 or the through electromagnet two 95 is started, and the connecting rod 91 extends into the connecting groove one 92 or the connecting groove two 94; Firstly, the corrugated pipe to be detected is placed on the V-shaped receiving table 42, and the height position is adjusted through the hydraulic cylinder 41; when impact detection is performed, the rope winding and unwinding module 2 pulls the drop hammer assembly 3, when the connecting rod 91 on the counterweight plate 6 corresponds to the connecting groove two 94, the through electromagnet two 95 in the corresponding connecting groove two 94 is started, the adsorption effect of the through electromagnet two 95 and the connecting rod 91 is utilized, the connection between the counterweight plate 6 and the drop hammer assembly 3 is realized, and the automatic weighting of the drop hammer assembly 3 is realized; when the connecting rod 91 on the counterweight plate 6 corresponds to the connecting groove one 92, the through electromagnet one 93 in the corresponding connecting groove one 92 is started, the adsorption effect of the through electromagnet one 93 and the connecting rod 91 is utilized, the connection between the counterweight plate 6 and the vertical rod 8 is realized, and the automatic lightening of the drop hammer assembly 3 is realized, so that the counterweight plate 6 can be flexibly and quickly increased and decreased through the connecting assembly 9, the limitation of fixed weight and inconvenient adjustment of the traditional drop hammer device is broken through, the detection flexibility is improved, the grading adjustment of the detection force is realized, and the corrugated pipes with different materials and wall thicknesses are adapted for detection; The upper end of the fixed table 11 is fixed with four guide rods 5 and two vertical rods 8 between the rack 1, the outer side of the four guide rods 5 is collectively sleeved with a plurality of counterweight plates 6, and each counterweight plate 6 is installed with a set of connecting assemblies 9 between the vertical rod 8 and the drop hammer assembly 3; the guide rod 5 includes a guide sleeve 51 fixed in the inside of the rack 1, a plurality of rolling balls 52 are movably installed on the outer wall of the guide sleeve 51, the plurality of rolling balls 52 are uniformly distributed on the guide sleeve 51, and the inside of the guide sleeve 51 is installed with a sponge ring 53, and the plurality of rolling balls 52 are attached to the outer wall of the sponge ring 53; When the counterweight plate 6 slides up and down with the drop hammer assembly 3, the stability of the counterweight plate 6 is improved when falling downward and lifting upward by the guiding effect of the guide rod 5, and the friction between the guide rod 5 and the counterweight plate 6 is reduced under the action of the uniformly distributed rolling balls 52, the service life of the device is prolonged, the maintenance cost is reduced, and the sponge ring 53 stores lubricating oil, which can ensure long-term smooth operation through contact with the sponge ring 53 when the rolling ball 52 rotates; The lower end of the vertical rod 8 is installed with a supplement module 7, the supplement module 7 includes a shell 71 fixed at the lower end of the vertical rod 8, a storage cavity 72 and a pumping cavity 73 are respectively reserved and opened in the inside of the shell 71 from top to bottom, a driving assembly 74 is installed in the inside of the pumping cavity 73, and the lubricating oil in the inside of the storage cavity 72 is sequentially injected into the pumping cavity 73 and the inside of the guide rod 5 through the driving assembly 74; the storage cavity 72 and the pumping cavity 73 are communicated through a one-way valve, the pumping cavity 73 is communicated with a supplement pipe 75 through an opposite one-way valve, the supplement pipe 75 is fixedly installed in the inside of the sponge ring 53, and a plurality of through holes 751 are uniformly opened in the side of the supplement pipe 75; the driving assembly 74 includes a driving part 741 and a piston part 742, the driving part 741 includes a cam roller 7411 rotatably installed on the shell 71 through a torsion spring, the end of the cam roller 7411 is fixedly connected with a ratchet wheel 7412 on the outside of the shell 71, the pawl part 34 cooperates with the ratchet wheel 7412 after the drop hammer assembly 3 is lowered, and drives the ratchet wheel 7412 to rotate in the upward movement process; the piston part 742 includes a piston plate 7421 movably installed in the inside of the pumping cavity 73, the upper end of the piston plate 7421 is fixed with a movable rod 7422, the upper end of the movable rod 7422 is sleeved with a fixed rod 7423, the fixed rod 7423 is fixed in the shell 71, and the movable rod 7422 and the fixed rod 7423 are connected with a pressure spring 7424, and the cam roller 7411 is used to adjust the height position of the piston plate 7421; After the impact of the falling hammer is completed, the pawl 34 engages with the ratchet 7412 as the falling hammer assembly 3 moves upward. During the continuous upward movement, the ratchet 7412 rotates, which in turn drives the cam roller 7411 to rotate synchronously. During the rotation of the cam roller 7411, the piston 742 is pushed to compress the suction chamber 73, and the lubricating oil in the suction chamber 73 is injected into the sponge ring 53 of the guide rod 5 through the replenishment pipe 75, realizing the automatic replenishment of lubricating oil. The mechanical energy of the falling hammer assembly 3 when it rises drives the active component 741 to work, converting kinetic energy into hydraulic energy, realizing kinetic energy recovery. At the same time, the cooperation between the pawl 34 and the ratchet 7412 reduces the impact on the falling hammer assembly 3 during the impact operation. When the ratchet 7412 is not engaged with the pawl 34, it is reset with the cooperation of the torsion spring and the pressure spring 7424. During the reset process, the lubricating oil in the storage chamber 72 is drawn into the suction chamber 73 for replenishment and reuse.

[0028] Working principle: When using this bellows performance testing device, such as Figures 1-10 As shown, the corrugated pipe to be tested is first placed on the V-shaped receiving platform 42, and its height position is adjusted by the hydraulic cylinder 41. Using the connecting component 9, the counterweight plate 6 is automatically added or removed on the drop hammer assembly 3. After adjusting to the required weight, the rope release module 2 is released, and the drop hammer assembly 3 impacts the corrugated pipe on the V-shaped receiving platform 42. When the counterweight plate 6 moves up and down with the drop hammer assembly 3, the guide rod 5 is used to improve stability, while the ball bearing 52 is used to reduce friction and extend service life. When the drop hammer assembly 3 drives the pawl 34 to cooperate with the ratchet 7412, during the upward process, the drive component 74 uses the lubricating oil in the suction chamber 73 to be injected into the sponge ring 53 of the guide rod 5 through the replenishment pipe 75 to achieve automatic replenishment of lubricating oil, ensuring long-term smooth operation, and at the same time converting kinetic energy into hydraulic energy to achieve kinetic energy recovery.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for detecting the performance of a bellows, characterized in that: Including frame (1), the upper end of frame (1) is installed with rope take-up module (2), and the output end of rope take-up module (2) is connected with drop hammer assembly (3), the inside of frame (1) is installed with fixed platform (11), and the lower of fixed platform (11) is installed with receiving assembly (4); The upper end between fixed platform (11) and frame (1) is fixed with four guide rods (5) and two vertical rods (8), the outside of four guide rods (5) is commonly slidably provided with a plurality of counterweight plates (6), and each counterweight plate (6) is installed with a set of connecting assembly (9) between vertical rod (8) and drop hammer assembly (3); The lower end of vertical rod (8) is installed with supplement module (7), supplement module (7) includes housing (71) fixed at the lower end of vertical rod (8), storage cavity (72) and drawing cavity (73) are reserved in the inside of housing (71) from top to bottom, driving assembly (74) is installed in the inside of drawing cavity (73), and the lubricating oil in the inside of storage cavity (72) is sequentially injected into the inside of drawing cavity (73) and guide rod (5) by driving assembly (74).

2. A device for testing the performance of a bellows according to claim 1, characterized in that: The lower end of vertical rod (8) is installed with supplement module (7), supplement module (7) includes housing (71) fixed at the lower end of vertical rod (8), storage cavity (72) and drawing cavity (73) are reserved in the inside of housing (71) from top to bottom, driving assembly (74) is installed in the inside of drawing cavity (73), and the lubricating oil in the inside of storage cavity (72) is sequentially injected into the inside of drawing cavity (73) and guide rod (5) by driving assembly (74).

3. The bellows performance testing device of claim 1, wherein: The output end of hydraulic cylinder (41) is installed with V-shaped receiving platform (42), the inside of side of V-shaped receiving platform (42) is slidably provided with limiting rod (43), and limiting rod (43) is fixedly installed in the inside of frame (1).

4. The bellows performance testing device of claim 1, wherein: The outside of guide sleeve (51) is movably installed with a plurality of rolling balls (52), a plurality of rolling balls (52) are evenly distributed on guide sleeve (51), sponge ring (53) is installed in the inside of guide sleeve (51), and a plurality of rolling balls (52) are attached to the outer wall of sponge ring (53).

5. A device for testing the performance of a bellows according to claim 4, characterised in that: Storage cavity (72) and drawing cavity (73) are communicated through one-way valve, drawing cavity (73) is communicated with supplement pipe (75) through opposite one-way valve, supplement pipe (75) is fixedly installed in the inside of sponge ring (53), and through holes (751) are evenly formed in the side of supplement pipe (75).

6. A device for testing the performance of a bellows according to claim 2, characterized in that: The driving assembly (74) comprises a driving part (741) and a piston part (742), the driving part (741) comprises a cam roller (7411) which is rotatably installed on the shell (71) through a torsion spring, and the end of the cam roller (7411) is fixedly connected with a ratchet wheel (7412) outside the shell (71), the pawl part (34) cooperates with the ratchet wheel (7412) after the drop hammer assembly (3) is lowered, and drives the ratchet wheel (7412) to rotate in the upward movement process.

7. A device for testing the performance of a bellows according to claim 6, characterised in that: The piston part (742) comprises a piston plate (7421) which is slidingly installed inside the suction cavity (73), the upper end of the piston plate (7421) is fixedly connected with a movable rod (7422), the upper end of the movable rod (7422) is sleeved with a fixed rod (7423) outside, the fixed rod (7423) is fixedly connected in the shell (71), and the movable rod (7422) and the fixed rod (7423) are connected with a pressure spring (7424), and the cam roller (7411) is used for adjusting the height position of the piston plate (7421).

8. The bellows performance testing device of claim 2, wherein: The middle part of the counterweight plate (6) is provided with a through port (61), and the opening area of the through port (61) is larger than the cross section of the connecting column (31).

9. A device for testing the performance of a bellows according to claim 8, characterised in that: The connecting assembly (9) comprises a connecting rod (91) which is slidingly installed inside the counterweight plate (6), the connecting rod (91) is provided with two, and the two connecting rods (91) are symmetrically distributed about the center of the counterweight plate (6); The connecting assembly (9) further comprises a connecting groove one (92) which is formed in the side of the vertical rod (8) and a connecting groove two (94) which is formed in the inside of the drop hammer body (33), the inside of the connecting groove one (92) and the connecting groove two (94) is respectively provided with a through electromagnetic iron one (93) and a through electromagnetic iron two (95); The connecting rod (91) is made of iron, and when the connecting rod (91) corresponds to the connecting groove one (92) or the connecting groove two (94), the through electromagnetic iron one (93) or the through electromagnetic iron two (95) is started, and the connecting rod (91) is inserted into the connecting groove one (92) or the connecting groove two (94).

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