Pipeline drop hammer type detection equipment

Improvements to the lifting and traction mechanisms have solved the problem of insufficient adaptability of the equipment to pipes of different sizes, thus achieving wider applicability and improved stability of the equipment.

CN223624025UActive Publication Date: 2025-12-02FOSHAN NANHAI ZHENGYE CONSTR ENG QUALITY INSPECTION CO LTD
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Patent Information

Application Number
CN202422718609.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-07
Publication Date
2025-12-02
Estimated Expiration
2034-11-07

AI Technical Summary

Technical Problem

Existing pipe drop hammer testing equipment is not adaptable enough to testing pipes of different sizes, and the lifting device is prone to deformation, resulting in limitations and instability of the equipment.

Method used

By adjusting the design of the lifting and traction mechanisms, the height of the crossbeam can be flexibly adjusted, and the stability and adaptability of the equipment can be improved through shock-absorbing seats and reinforcing rib structures.

Benefits of technology

This enhances the equipment's adaptability to pipes of different sizes, reduces deformation of the lifting device, extends the equipment's service life, and improves safety and stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of detection equipment, in particular to pipeline drop hammer type detection equipment which comprises a detection box body, a cross beam and a lifting mechanism used for adjusting the height of the cross beam are arranged in the detection box body, and a bearing seat used for placing a to-be-detected pipe is arranged on the cross beam; a guide pipe, a support column for supporting and fixing the guide pipe and a console for controlling the detection equipment are arranged on the detection box body, a fixed seat is arranged at the top of the detection box body, the bottom of the guide pipe is arranged in the fixed seat, and a through drop hammer opening is formed in the fixed seat and the top of the detection box body; an impact hammer is arranged in the guide pipe, and a traction mechanism for controlling the impact hammer to retract and release is arranged on the top of the supporting column. According to the pipe detection device, when pipes of different sizes need to be detected, the distance between the cross beam and the interior of the detection box body can be adjusted by adjusting the lifting mechanism, so that the adaptability of the bearing seat for bearing the pipes of different sizes is improved, and the application of the detection device is wider.
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Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a pipe drop hammer testing device. Background Technology

[0002] With the widespread application of plastic pipes in building materials and construction industries, impact testing has become an essential inspection item. Consequently, testing equipment has become indispensable for plastic pipe production, research, use, and inspection organizations. The drop weight impact tester is designed and manufactured according to the national standard GB / T14152-2001 "Test Method for Resistance to External Impact of Thermoplastic Pipes and Fittings—True Impact Rate Method" and the international standard ISO3127 "Test Method for Resistance to External Impact of Thermoplastic Pipes and Fittings—Clockwise Rotation Method". The working principle of the drop weight impact tester is to use a specific-shaped and mass hammer, under specified conditions, to freely drop from a certain height onto the sample to impact it. By changing the mass of the hammer or the drop height, a certain number of samples are tested, thereby measuring the energy required for the product to break upon impact.

[0003] Currently, some older drop hammer testing equipment has two problems. One is that the height of the worktable used to place the pipe is fixed, and the top of the pipe needs to leave a certain space with the top of the equipment. When testing thicker pipes, it is difficult to insert the pipes into the worktable, which limits the equipment and makes it unsuitable for various pipe sizes. The other problem is that the lifting device used to release the drop hammer from a height to impact the pipe may deform due to the pressure generated by the falling hammer. Therefore, further improvements are needed. Utility Model Content

[0004] To increase the adaptability and stability of the testing equipment, this application provides a pipe drop hammer testing device.

[0005] The technical solution of the pipe drop hammer testing device provided in this application is as follows: A pipe drop hammer testing device includes a testing box, wherein a crossbeam and a lifting mechanism for adjusting the height of the crossbeam are provided inside the testing box, and a bearing seat for placing the pipe to be tested is provided on the crossbeam.

[0006] The testing chamber is equipped with a guide tube, a support column for supporting and fixing the guide tube, and a control console for controlling the testing equipment. A fixed seat is provided on the top of the testing chamber, the bottom of the guide tube is placed in the fixed seat, and the fixed seat and the top of the testing chamber have a through-hole for the hammer.

[0007] An impact hammer is installed inside the guide tube, and a traction mechanism for controlling the retraction and extension of the impact hammer is installed at the top of the support column.

[0008] By adopting the above technical solution, when it is necessary to test pipes of different sizes, the distance between the crossbeam and the test chamber can be adjusted by adjusting the lifting mechanism, thereby increasing the adaptability of the bearing seat to bear pipes of different sizes and making the testing equipment more versatile.

[0009] Optionally, the lifting mechanism includes multiple bidirectional lifting screws, which are respectively installed on both sides of the crossbeam and are arranged vertically. Adjusting sleeves are installed on the crossbeam at positions corresponding to the bidirectional lifting screws. The adjusting sleeves are fixedly connected to the crossbeam, and each adjusting sleeve is threadedly engaged with the bidirectional lifting screw.

[0010] Both ends of the multiple bidirectional lifting screws are fixedly connected to the upper and lower ends of the detection box through bearing seats. Each bidirectional lifting screw is provided with a lifting gear at its bottom. A transmission chain is wound between the multiple lifting gears. One of the bidirectional lifting screws has a bearing seat at its top and a lifting handwheel is provided at the top of the detection box.

[0011] By adopting the above technical solution, when it is necessary to adjust the position and height of the crossbeam, the worker operates the lifting handwheel. Through the cooperation of the two-way lifting screw, lifting gear and transmission chain, the crossbeam is threadedly engaged between the adjusting sleeve and the two-way lifting screw. Rotating the lifting handwheel causes the two-way lifting screw, lifting gear and transmission chain to rotate, so that the crossbeam rises or falls. Depending on the size of the pipe, the bearing seat on the crossbeam can be adjusted to a suitable height, which is conducive to making the internal use of the equipment more extensive.

[0012] Optionally, the traction mechanism includes a support top plate disposed on the top of a support column. The support top plate is provided with a winding reel, a winding reel support seat, a motor seat, and a drive motor. The winding reel support seat and the motor seat are both disposed on the top of the support top plate and are arranged parallel to each other. The winding reel is rotatably disposed within the winding reel support seat. The drive motor is disposed on the motor seat. The movable end of the drive motor can pass through the winding reel support seat and be rotatably connected to the winding reel. A connecting rope is disposed on the winding reel, and the other end of the connecting rope is connected to an impact hammer.

[0013] By adopting the above technical solution, when it is necessary to wind up or release the impact hammer, the drive motor drives the winding wheel with the connecting rope to rotate, so that the connecting rope is wound up or released, and the impact hammer connected to the connecting rope rises and winds up or falls freely in the guide tube.

[0014] Optionally, a shock-absorbing seat is provided between the reel support and the support top plate. The shock-absorbing seat includes an upper shock-absorbing plate and a lower shock-absorbing plate, which are arranged parallel to each other at intervals. Multiple telescopic rods are provided between the upper and lower shock-absorbing plates, and shock-absorbing springs are sleeved on each of the multiple telescopic rods.

[0015] By adopting the above technical solution and setting up a shock-absorbing seat, when the impact hammer is falling freely, since one end of the connecting rope is connected to the winding reel, the impact hammer will exert pressure on one end of the connecting rope during its descent. This pressure will then suddenly exert downward pressure on the winding reel support seat and the winding reel. The upper and lower shock-absorbing plates at the bottom of the winding reel support seat, as well as the multiple telescopic rods with shock-absorbing springs installed between them, will elastically deform to absorb and reduce the impact force, thereby reducing the pressure on the winding reel support seat, increasing the stability of the testing equipment, and extending the service life of the testing equipment.

[0016] Optionally, multiple reinforcing ribs are provided between the bottom of the supporting top plate and the top of the supporting column.

[0017] By adopting the above technical solution and setting multiple reinforcing ribs, the structural rigidity between the supporting top plate and the supporting column is increased, and deformation or vibration caused by external forces is reduced, thereby improving the structural strength, stability and durability of the supporting top plate and the supporting column.

[0018] Optionally, a plurality of fasteners are provided between the support column and the guide tube. The fasteners include a fixing collar and a fixing block. The fixing collar is sleeved on the guide tube, and the fixing block is disposed between the fixing collar and the support column.

[0019] By adopting the above technical solution, fixing components are set up, and the movement of the guide tube is restricted by the fixing collar and fixing block, ensuring the fixed connection between the guide tube and the support column, increasing the connection strength between the guide tube and the support column, and ensuring that the guide tube is less affected by relative sliding or displacement during the movement of the impact hammer inside the guide tube, thereby improving the stability and safety of the guide tube.

[0020] Optionally, a tension gear is also provided inside the detection chamber. The tension gear is located at the bottom of the detection chamber and is connected to the transmission chain.

[0021] By adopting the above technical solution, a tensioning gear is set to ensure the tension of the transmission chain, avoiding transmission instability or chain detachment caused by an excessively loose transmission chain. It also prevents additional wear and excessive stress caused by an excessively tight transmission chain. Furthermore, by maintaining appropriate tension in the transmission chain, the transmission efficiency between the transmission chain and the lifting gear can be reduced.

[0022] Optionally, the support column is provided with a support member for supporting the impact hammer inside the guide tube. The support member includes a support seat, which is disposed on the support column. The support seat is provided with a hydraulic cylinder and a support plate. The guide tube is provided with an insertion interface, and the support plate can be inserted into the guide tube through the insertion interface to support the impact hammer inside the guide tube.

[0023] By adopting the above technical solution, a support component is set up, and the support plate in the support component supports the impact hammer in the guide tube. When the drop hammer test is not performed, the hydraulic cylinder located on the support seat drives the support plate to be inserted into the guide tube from the insertion interface for fixation, so that the impact hammer is placed on the support plate for fixation, preventing the impact hammer from accidentally slipping and avoiding damage to the equipment, thus improving the safety of the equipment. When the impact hammer needs to be subjected to an impact test, the support plate is similarly pulled out from the insertion interface, allowing the impact hammer to perform a free fall operation. The support plate in the guide tube plays a protective role for the impact hammer.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. When it is necessary to test pipes of different sizes, the distance between the crossbeam and the test chamber can be adjusted by adjusting the lifting mechanism, thereby increasing the adaptability of the bearing seat to bear pipes of different sizes and making the test equipment more versatile.

[0026] 2. When the position and height of the crossbeam need to be adjusted, the worker operates the lifting handwheel. Through the cooperation of the two-way lifting screw, lifting gear and transmission chain, the crossbeam is threaded between the adjusting sleeve and the two-way lifting screw. Rotating the lifting handwheel causes the two-way lifting screw, lifting gear and transmission chain to rotate, so that the crossbeam rises or falls. Depending on the size of the pipe, the bearing seat on the crossbeam can be adjusted to a suitable height, which is conducive to making the internal use of the equipment more extensive.

[0027] 3. A shock-absorbing seat is installed. During the free fall descent of the impact hammer, since one end of the connecting rope is connected to the reel, the impact hammer will exert pressure on the end of the connecting rope during the descent. This will in turn exert a sudden downward pressure on the reel support seat and the reel. The upper and lower shock-absorbing plates at the bottom of the reel support seat, as well as the multiple telescopic rods with shock-absorbing springs installed between them, will elastically deform to absorb and reduce the impact force, thereby reducing the pressure on the reel support seat, increasing the stability of the testing equipment, and extending the service life of the testing equipment. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0029] Figure 2This is a schematic diagram of the detection box structure in an embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the rear part of the detection box in an embodiment of this application.

[0031] Figure 4 This is a schematic diagram of the traction mechanism in an embodiment of this application.

[0032] Figure 5 This is a partial cross-sectional view of the traction mechanism in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Inspection box; 11. Crossbeam; 12. Bearing seat; 13. Opening door; 14. Mounting slot; 15. Mounting block; 2. Lifting mechanism; 21. Two-way lifting screw; 22. Adjusting sleeve; 23. Bearing seat; 24. Lifting gear; 25. Transmission chain; 26. Lifting handwheel; 27. Tensioning gear; 3. Guide tube; 31. Fixed seat; 32. Impact hammer; 33. Observation window; 4. Support column; 41. Fixing component; 411. Fixing collar; 412. Fixing block; 42. Support component; 421. Support seat; 422. Hydraulic cylinder; 423. Support plate; 5. Control console; 6. Traction mechanism; 61. Support top plate; 62. Winding reel; 63. Winding reel support seat; 64. Motor seat; 65. Drive motor; 66. Shock absorber seat; 661. Upper shock absorber plate; 662. Lower shock absorber plate; 663. Shock absorber groove; 664. Telescopic rod; 665. Shock absorber spring; 67. Reinforcing rib; 68. Connecting rope. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] This application discloses a pipeline falling weight testing device.

[0037] Reference Figure 1 , 2 A pipe drop hammer testing device includes a testing box 1, a crossbeam 11 and a lifting mechanism 2 are provided inside the testing box 1, the crossbeam 11 is movably installed inside the testing box 1, and a bearing seat 12 is fixedly provided at the middle of the top of the crossbeam 11.

[0038] The top of the testing chamber 1 is provided with a guide tube 3, a support column 4 and a control console 5. The guide tube 3 and the support column 4 are arranged parallel to each other. The control console 5 is placed on one side of the guide tube 3. A fixed seat 31 is fixedly installed at the middle position of the top of the testing chamber 1. The fixed seat 31 and the top of the testing chamber 1 have a through hammer opening. The bottom of the guide tube 3 is installed in the fixed seat 31 through the hammer opening.

[0039] An impact hammer 32 is installed inside the guide tube 3. In order to control the impact hammer 32, a traction mechanism 6 is installed at the top of the support column 4.

[0040] In addition, a double-leaf door 13 is provided on one side of the testing chamber 1. This door allows testing personnel to open the testing chamber 1 and place the pipe to be tested inside, improving the ease of use of the testing chamber 1. An openable observation window 33 is provided on the same side as the guide tube 3 and the door 13. This observation window 33 allows the operator to observe the impact and descent of the falling hammer without direct exposure to the impact area, thus avoiding potential safety risks.

[0041] In actual use, when it is necessary to test pipes of different sizes, the distance between the crossbeam 11 and the test chamber 1 can be adjusted by adjusting the lifting mechanism 2, thereby increasing the adaptability of the bearing seat 12 to bear pipes of different sizes and making the testing equipment more versatile.

[0042] refer to Figure 1 , 2 Specifically, in this embodiment, the lifting mechanism 2 includes multiple bidirectional lifting screws 21. The multiple bidirectional lifting screws 21 are respectively inserted through both sides of the crossbeam 11 along its length direction, and the multiple bidirectional lifting screws 21 are vertically arranged inside the detection box 1. An adjusting sleeve 22 is provided on the crossbeam 11 at the position where the bidirectional lifting screws 21 are inserted. The outer side of the adjusting sleeve 22 is fixedly connected to the crossbeam 11, and the inner side of the adjusting sleeve 22 is threadedly connected to the bidirectional lifting screws 21, so that the crossbeam 11 can perform lifting and lowering actions on the bidirectional lifting screws 21.

[0043] Furthermore, the upper and lower ends of the multiple bidirectional lifting screws 21 are fixedly connected to the upper and lower ends of the detection box 1 through bearing seats 23. Lifting gears 24 are rotatably mounted on the bottom of each bidirectional lifting screw 21 and above the bearing seats 23. A transmission chain 25 is arranged in a ring around the lifting gears 24 among the multiple bidirectional lifting screws, connecting all the lifting gears 24. A rotatable lifting handwheel 26 is mounted on the top of one of the bidirectional lifting screws 21, passing through the bearing seat 23 and connected to the top of the detection box. In this embodiment, there are two bidirectional lifting screws 21, located on both sides of the crossbeam 11.

[0044] In addition, to ensure the tension of the transmission gear, a tensioning gear 27 is provided at the bottom of the detection housing 1. A mounting groove 14 is provided at the bottom of the detection housing 1, and a mounting block 15 is installed within the mounting groove 14. The mounting block 15 is fixed in the mounting groove 14 by bolts. The tensioning gear 27 is rotatably mounted on the mounting block 15 and is rotatably connected to the transmission chain 25. The tensioning gear 27 ensures the tension of the transmission chain 25, preventing transmission instability or chain slippage due to an overly loose transmission chain 25, and also preventing additional wear and excessive stress caused by an overly tight transmission chain 25. Furthermore, by maintaining appropriate tension in the transmission chain 25, the transmission efficiency between the transmission chain 25 and the lifting gear 24 can be reduced.

[0045] In actual use, when it is necessary to adjust the position and height of the crossbeam 11, the worker operates the lifting handwheel 26 in conjunction with the bidirectional lifting screw 21, the lifting gear 24, and the transmission chain 25, so that the crossbeam 11 is threadedly engaged between the adjusting sleeve 22 and the bidirectional lifting screw 21. Rotating the lifting handwheel 26 causes the bidirectional lifting screw 21, the lifting gear 24, and the transmission chain 25 to rotate, causing the crossbeam 11 to rise or fall. Depending on the size of the pipe, the bearing seat 12 on the crossbeam 11 can be adjusted to a suitable height, which helps to make the internal use of the equipment more extensive.

[0046] refer to Figure 1 , 3 Specifically, in this embodiment, multiple fasteners 41 are arranged sequentially at intervals along the height direction of the guide tube 3 between the support column 4 and the guide tube 3. The fasteners 41 include a fixing collar 411 and a fixing block 412. The fixing collar 411 can be sleeved in the guide tube 3 along the height direction of the guide tube 3 and then fixedly connected to one end of the fixing block 412. The other end of the fixing block 412 is fixedly connected to the side of the support column 4 near the guide tube 3.

[0047] In actual use, a fixing component 41 is set up, and the movement of the guide tube 3 is restricted by the fixing collar 411 and the fixing block 412, so as to ensure the fixed connection between the guide tube 3 and the support column 4, increase the connection strength between the guide tube 3 and the support column 4, and ensure that the guide tube 3 is less affected by relative sliding or displacement during the movement of the impact hammer 32 inside the guide tube 3, thereby improving the stability and safety of the guide tube 3.

[0048] refer to Figure 1 , 3Specifically, in this embodiment, a support member 42 is provided on one side of the support column 4. The support member 42 includes a support seat 421, which is horizontally disposed on the support column 4. A hydraulic cylinder 422 and a support plate 423 are respectively disposed on the support seat 421. The movable end of the hydraulic cylinder 422 is disposed towards the guide tube 3. The support plate 423 is disposed on the movable end of the hydraulic cylinder 422. In order to enable the support plate 423 to support the impact hammer 32 in the guide tube 3, an insertion interface adapted to the shape of the support plate 423 is provided on the side of the guide tube 3 near the hydraulic cylinder 422. This allows the support plate 423 to be inserted into the guide tube 3 through the insertion interface under the action of the hydraulic cylinder 422, thereby supporting the impact hammer 32 in the guide tube 3.

[0049] In actual use, a support component 42 is set up, and the support plate 423 in the support component 42 supports the impact hammer 32 in the guide tube 3. When the drop hammer test is not performed, the hydraulic cylinder 422 located on the support seat 421 drives the support plate 423 to be inserted into the guide tube 3 from the insertion interface for fixation, so that the impact hammer 32 is placed on the support plate 423 for fixation, preventing the impact hammer 32 from accidentally slipping and avoiding damage to the equipment, thus improving the safety of the equipment. When the impact hammer 32 needs to be subjected to an impact test, the support plate 423 is similarly pulled out from the insertion interface, so that the impact hammer 32 can be subjected to free fall operation. The support plate 423 plays a protective role for the impact hammer 32 in the guide tube 3.

[0050] refer to Figure 3 , 4 5. Specifically, in this embodiment, the traction mechanism 6 provided at the top of the support column 4 includes a support top plate 61, and the support top plate 61 is located above the support column 4 and the guide tube 3. A plurality of reinforcing ribs 67 are provided between the bottom of the support top plate 61 and the support column 4. The plurality of reinforcing ribs 67 are sequentially arranged around the side of the support column 4, thereby increasing the connection strength between the support top plate 61 and the support column 4.

[0051] A winding reel 62, a winding reel support 63, a motor base 64, a drive motor 65, and a shock absorber 66 are provided on the top side of the supporting top plate 61 above the supporting column 4. The winding reel support 63, the shock absorber 66, and the motor base 64 are all fixedly mounted on the top of the supporting top plate 61, with the winding reel support 63 located above the shock absorber 66. The motor base 64 is parallel to the winding reel support 63. The winding reel 62 is rotatably mounted inside the winding reel support 63. The drive motor... The drive motor 65 is fixedly mounted on the motor base 64. The movable end of the drive motor 65 faces the winding wheel 62, and the movable end of the drive motor 65 passes through the winding wheel support 63 and is connected to the winding wheel 62, so that the drive motor 65 can drive the winding wheel 62 to rotate in the winding wheel support 63. A connecting rope 68 is provided on the winding wheel 62. The support top plate 61 is located above the guide tube 3 and has an outlet for the other end of the connecting rope 68 to enter the guide tube 3 from the outlet and connect to the top of the impact hammer 32.

[0052] In actual use, when it is necessary to wind up or release the impact hammer 32, the drive motor 65 drives the winding wheel 62 with the connecting rope 68 wound on it to rotate, so that the connecting rope 68 is wound up or released, and the impact hammer 32 connected to the connecting rope 68 rises and winds up or falls freely in the guide tube 3.

[0053] refer to Figure 4 , 5 Specifically, in this embodiment, the shock-absorbing seat 66 includes an upper shock-absorbing plate 661 and a lower shock-absorbing plate 662. The upper shock-absorbing plate 661 and the lower shock-absorbing plate 662 are arranged parallel to each other at intervals. The bottom of the upper shock-absorbing plate 661 and the top of the lower shock-absorbing plate 662 are provided with two sets of T-shaped shock-absorbing grooves 663 arranged side by side. There are multiple shock-absorbing grooves 663 in each set. Correspondingly, each shock-absorbing groove 663 is provided with a telescopic rod 664. The top and bottom of the telescopic rod 664 are provided with T-shaped locking blocks, so that the telescopic rod 664 is better fixed in the shock-absorbing groove 663 by locking. Each telescopic rod 664 is also fitted with a shock-absorbing spring 665.

[0054] In actual use, a shock-absorbing seat 66 is set up. When the impact hammer 32 is falling freely, since one end of the connecting rope 68 is connected to the winding reel 62, the impact hammer 32 will exert pressure on one end of the connecting rope 68 during its descent. This will then exert a sudden downward pressure on the winding reel support 63 and the winding reel 62. The upper shock-absorbing plate 661 and the lower shock-absorbing plate 662 at the bottom of the winding reel support 63, as well as the multiple telescopic rods 664 with shock-absorbing springs 665 sleeved between them, will elastically deform to absorb and reduce the impact force, thereby reducing the pressure on the winding reel support 63, increasing the stability of the testing equipment, and extending the service life of the testing equipment.

[0055] The implementation principle of the pipeline falling weight testing device in this application embodiment is as follows: When it is necessary to adjust the position and height of the crossbeam 11, the worker operates the lifting handwheel 26 in conjunction with the bidirectional lifting screw 21, the lifting gear 24 and the transmission chain 25, so that the crossbeam 11 is threadedly engaged between the adjusting sleeve 22 and the bidirectional lifting screw 21. Rotating the lifting handwheel 26 causes the bidirectional lifting screw 21, the lifting gear 24 and the transmission chain 25 to rotate, so that the crossbeam 11 rises or falls.

[0056] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pipe falling weight testing device, characterized in that: The test chamber (1) includes a crossbeam (11) and a lifting mechanism (2) for adjusting the height of the crossbeam (11). The crossbeam (11) is provided with a support seat (12) for placing the pipe to be tested. The detection box (1) is provided with a guide tube (3), a support column (4) for supporting and fixing the guide tube (3), and a control console (5) for controlling the detection equipment. The top of the detection box (1) is provided with a fixed seat (31), the bottom of the guide tube (3) is provided in the fixed seat (31), and the fixed seat (31) and the top of the detection box (1) are provided with a through hammer opening. An impact hammer (32) is installed inside the guide tube (3), and a traction mechanism (6) for controlling the retraction and extension of the impact hammer (32) is installed at the top of the support column (4).

2. The pipeline falling weight testing device according to claim 1, characterized in that: The lifting mechanism (2) includes multiple bidirectional lifting screws (21), which are respectively installed on both sides of the crossbeam (11) and are respectively arranged in the vertical direction. Adjusting sleeves (22) are installed on the crossbeam (11) at the corresponding positions of the bidirectional lifting screws (21). The adjusting sleeves (22) are fixedly connected to the crossbeam (11), and each adjusting sleeve (22) is threadedly engaged with the bidirectional lifting screw (21). Both ends of the multiple bidirectional lifting screws (21) are fixedly connected to the upper and lower ends of the detection box (1) through bearing seats (23). Each bidirectional lifting screw (21) is provided with a lifting gear (24) at the bottom. A transmission chain (25) is wound between the multiple lifting gears (24). One of the bidirectional lifting screws (21) has a bearing seat (23) passing through its top and a lifting handwheel (26) provided at the top of the detection box (1).

3. The pipeline falling weight testing device according to claim 1, characterized in that: The traction mechanism (6) includes a support top plate (61), which is located on the top of the support column (4). The support top plate (61) is provided with a winding wheel (62), a winding wheel support seat (63), a motor seat (64), and a drive motor (65). The winding wheel support seat (63) and the motor seat (64) are both located on the top of the support top plate (61) and are arranged parallel to each other. The winding wheel (62) is rotatably located inside the winding wheel support seat (63). The drive motor (65) is located on the motor seat (64). The movable end of the drive motor (65) can pass through the winding wheel support seat (63) and be rotatably connected to the winding wheel (62). A connecting rope (68) is provided on the winding wheel (62), and the other end of the connecting rope (68) is connected to the impact hammer (32).

4. The pipeline falling weight testing device according to claim 3, characterized in that: A shock-absorbing seat (66) is provided between the reel support base (63) and the support top plate (61). The shock-absorbing seat (66) includes an upper shock-absorbing plate (661) and a lower shock-absorbing plate (662). The upper shock-absorbing plate (661) and the lower shock-absorbing plate (662) are arranged parallel to each other at intervals. A plurality of telescopic rods (664) are provided between the upper shock-absorbing plate (661) and the lower shock-absorbing plate (662). Each of the plurality of telescopic rods (664) is fitted with a shock-absorbing spring (665).

5. A pipe falling weight testing device according to claim 3, characterized in that: Multiple reinforcing ribs (67) are provided between the bottom of the supporting top plate (61) and the top of the supporting column (4).

6. The pipeline falling weight testing device according to claim 1, characterized in that: Multiple fasteners (41) are provided between the support column (4) and the guide tube (3). Each fastener (41) includes a fixing collar (411) and a fixing block (412). The fixing collar (411) is sleeved on the guide tube (3), and the fixing block (412) is located between the fixing collar (411) and the support column (4).

7. A pipe falling weight testing device according to claim 2, characterized in that: The detection box (1) is also equipped with a tension gear (27), which is located at the bottom of the detection box (1) and is connected to the transmission chain (25).

8. The pipeline falling weight testing device according to claim 1, characterized in that: The support column (4) is provided with a support member (42) for supporting the impact hammer (32) in the guide tube (3). The support member (42) includes a support seat (421), which is provided on the support column (4). The support seat (421) is provided with a hydraulic cylinder (422) and a support plate (423). The guide tube (3) is provided with an insertion interface. The support plate (423) can be inserted into the guide tube (3) through the insertion interface to support the impact hammer (32) in the guide tube (3).