Drop hammer impact testing machine

Abstract

The utility model relates to the technical field of drop hammer tests, and discloses a drop hammer impact testing machine, which comprises a test bin, a drop plate arranged in a test bin cavity, a drop hammer arranged at the lower end of the drop plate, and a test pipe arranged below the drop hammer, the pressure applying external member is arranged in the cavity of the test pipe, an external member inner hole is formed in the pressure applying external member, and a pressure applying rod is arranged in the external member inner hole; the pressure applying bottom block is fixedly arranged at the lower end of the pressure applying external member, and a main pressure plate is fixed at one end of the pressure applying rod. According to the application, a group of pressure applying suite is arranged in the test pipe, the pressure applying rod is inserted into the pressure applying suite, and the pressure applying bottom blocks are fixedly arranged on the two sides of the bottom of the pressure applying suite, so that when the pressure applying rod is pressed downwards, the pressure applying bottom blocks at the two ends of the pressure applying suite cling to the bottom of the test pipe, and the pressure applying bottom blocks and the supporting blocks have two groups of clamping points for the test pipe; therefore, compared with a comparison file, the clamping of the bottom of the test pipe is more stable, and the stability of the pipe under the impact of the drop hammer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drop hammer test, in particular to a drop hammer impact testing machine. Background Art

[0002] The drop hammer impact testing machine is suitable for the determination of the external impact resistance of various pipes (PVC-U water supply pipes, sewage pipes, low-pressure water supply pipes, low-pressure water delivery pipes, core foam pipes, double-wall corrugated pipes, PE water supply pipes) and plates. During the experiment, the impact hammer hits the pipe and bounces upward to test the external impact resistance of the pipe.

[0003] A patent search revealed that a new type of pipe drop hammer impact testing machine with the authorization announcement number CN214224740U adopts a flip bar mechanism and a pressure rod to press the pipe, which is convenient for positioning the pipe and will not slip during testing. During the test, the threaded rod can be twisted unilaterally to drive the lifting plate up and down, which can facilitate the adjustment of the impact test position. The above-mentioned comparative document uses a pressure rod to press down the bottom of the pipe for positioning. The contact area between the pressure rod and the pipe is small, and the stability of the downward pressure is poor. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a drop weight impact testing machine to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: comprising: a test chamber, a drop plate installed in the test chamber cavity, and a drop hammer installed at the lower end of the drop plate,

[0006] Also includes:

[0007] The test pipe is set below the falling weight;

[0008] A pressure-applying kit is arranged in the cavity of the test pipe, a kit inner hole is opened in the pressure-applying kit, and a pressure-applying rod is arranged in the hole of the kit inner hole;

[0009] The pressure bottom block is fixedly arranged at the lower end of the pressure kit, and a main pressure plate is fixed at one end of the pressure rod.

[0010] Furthermore, a screw hole is provided at one end of the pressure rod away from the main pressure plate, and a limiting screw is installed in the screw hole.

[0011] Furthermore, a support block is arranged at the bottom of the test pipe, a V-shaped groove is arranged at the top of the support block, and a base plate is fixedly arranged at the bottom of the support block.

[0012] Furthermore, a pressure plate shaft is installed on the surface of the support block, and the surface of the main pressure plate is connected to the pressure plate shaft.

[0013] Furthermore, an adjusting insert is fixedly provided at the bottom of the main pressure plate, and a positioning sleeve rod is inserted into the hole of the adjusting insert.

[0014] Furthermore, a circular hole is provided on the surface of the base plate, an adjusting nut is installed in the circular hole through a rotating shaft, and an adjusting screw is connected to the inner thread of the adjusting nut.

[0015] Furthermore, the top of the adjusting screw rod is sleeved with the lower part of the positioning sleeve rod, and a handle is arranged at the bottom of the adjusting screw rod.

[0016] Furthermore, a retaining bar screw is threadedly connected to the surface of the support block, and a limiting retaining bar is disposed on the outer sleeve of the retaining bar screw.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The present application sets a set of pressure kits in the test pipe, and inserts a pressure rod into the pressure kit. Since pressure bottom blocks are fixed on both sides of the bottom of the pressure kit, when the pressure rod is pressed down, the pressure bottom blocks at both ends of the pressure kit will be tightly attached to the bottom of the test pipe, so that the pressure bottom block and the support block have two sets of clamping points for the test pipe. Therefore, compared with the comparative document, the bottom clamping of the test pipe is more stable, thereby improving the stability of the pipe when it is impacted by a falling hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is an enlarged view of the test pipe of the utility model;

[0021] Figure 3 This is an enlarged view of the main pressure plate of the utility model;

[0022] Figure 4 This is an enlarged view of the pressure-applying kit of the utility model;

[0023] Figure 5 This is an enlarged view of the limit stop bar of the utility model.

[0024] In the figure: 1. test chamber; 2. drop plate; 3. drop hammer; 4. base plate; 5. support block; 6. test pipe; 7. main pressure plate; 8. pressure plate shaft; 9. pressure rod; 10. pressure kit; 11. pressure bottom block; 12. kit inner hole; 13. adjustment sleeve; 14. positioning sleeve; 15. adjustment screw; 16. adjustment nut; 17. limit screw; 18. stop bar screw; 19. limit stop bar. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 , including: a test chamber 1, a drop plate 2 installed in the chamber of the test chamber 1 and a drop hammer 3 installed at the lower end of the drop plate 2. Slide grooves are provided on both sides of the test chamber 1, and the side walls of the two groups of drop plates 2 are provided with sliders extending into the slide grooves, so that the drop plate 2 and the drop hammer 3 can move longitudinally more stably. A base plate 4 with a rectangular structure is installed at the bottom of the groove of the test chamber 1, and a support block 5 is fixed on the top of the support block 5, so that the top of the support block 5 adopts a V-shaped groove structure, so that after the test pipe 6 is placed in the groove, the center of the test pipe 6 is directly below the drop hammer 3, and the test is completed downward by the drop hammer 3, and the two contact points between the test pipe 6 and the top V-shaped groove of the support block 5 can keep the test pipe 6 in a stable support state.

[0027] The test tube 6 is arranged below the drop hammer 3; the pressure-applying kit 10 is arranged in the cavity of the test tube 6, and a kit inner hole 12 is provided in the pressure-applying kit 10, and a pressure-applying rod 9 is arranged in the hole of the kit inner hole 12, and the pressure-applying rod 9 can move in the space of the kit inner hole 12, and two groups of pressure-applying bottom blocks 11 are fixed on both sides of the bottom of the pressure-applying kit 10. When the pressure-applying rod 9 is pressed down, the pressure-applying rod 9 fits with the cavity bottom of the kit inner hole 12, and then the two groups of pressure-applying bottom blocks 11 are tightly attached to the two sides of the bottom wall of the test tube 6, so that the two groups of pressure-applying bottom blocks 11 and the support block 5 clamp the test tube 6, and there are two groups of clamping points, so that under the downward pressure of the pressure-applying kit 10, the overall stability of the test tube 6 can be improved;

[0028] One end of the pressure rod 9 is fixed with the main pressure plate 7. A screw hole is provided at one end of the pressure rod 9 away from the main pressure plate 7, and a limiting screw 17 is installed in the screw hole. In order to prevent the pressure kit 10 from falling off from the pressure rod 9, the front end of the limiting screw 17 can be threadedly connected to the screw hole, so that the disc structure at the rear end of the limiting screw 17 covers the opening of the pressure kit 10. The disc of the limiting screw 17 has a larger diameter, so the pressure kit 10 is limited, so that the pressure kit 10 is always sleeved outside the pressure rod 9.

[0029] A pressure plate shaft 8 is installed on the surface of the support block 5, and the surface of the main pressure plate 7 is connected to the pressure plate shaft 8. Through the connection of the pressure plate shaft 8, the main pressure plate 7 can rotate with the pressure plate shaft 8 as the rotation support point. The pressure rod 9 can be pressed down and lifted upward by the rotation of the main pressure plate 7, thereby completing the locking and release of the test pipe 6. An adjusting sleeve 13 is fixed to the bottom of the main pressure plate 7, and a positioning sleeve rod 14 is inserted into the hole of the adjusting sleeve 13. The positioning sleeve rod 14 has an L-shaped structure, and the L-shaped horizontal axis is inserted into the hole of the adjusting sleeve 13. An adjusting screw 15 is sleeved under the L-shaped axis. The positioning sleeve rod 14 can rotate freely at the top of the adjusting screw 15. A circular hole is opened on the surface of the base plate 4, and an adjusting nut 16 is installed in the circular hole through a rotating shaft. The adjusting screw 15 is connected to the inner thread of the adjusting nut 16. A handle is provided at the bottom of the adjusting screw 15, and the adjusting screw 15 can be rotated by operating the handle. The adjusting screw 15 can drive the positioning sleeve 14 to move up and down in an arc shape by relying on the threaded connection with the adjusting nut 16, and the end face of the adjusting nut 16 and the rotating shaft in the circular hole can make the adjusting screw 15 adaptively change the angle. A baffle screw 18 is threadedly connected to the surface of the support block 5, and a limit baffle 19 is provided on the outer sleeve of the baffle screw 18. The limit baffle 19 is L-shaped. The position of the limit baffle 19 can be changed by threading the baffle screw 18 with the support block 5, and the position of the test pipe 6 is intercepted by the limit baffle 19.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drop weight impact testing machine, comprising: A test chamber (1), a drop plate (2) installed in the chamber of the test chamber (1), and a drop weight (3) installed at the lower end of the drop plate (2). It is characterized by further comprising: A test pipe (6) is arranged below the drop weight (3); A pressure-applying kit (10) is arranged in the cavity of the test pipe (6), a kit inner hole (12) is provided in the pressure-applying kit (10), and a pressure-applying rod (9) is arranged in the hole of the kit inner hole (12); The pressure bottom block (11) is fixedly arranged at the lower end of the pressure set (10), and one end of the pressure rod (9) is fixed with a main pressure plate (7).

2. A drop weight impact testing machine according to claim 1, characterized in that: A screw hole is provided at one end of the pressure rod (9) away from the main pressure plate (7), and a limiting screw rod (17) is installed in the screw hole.

3. A drop weight impact testing machine according to claim 1, characterized in that: A support block (5) is arranged at the bottom of the test pipe (6), a V-shaped groove is arranged at the top of the support block (5), and a base plate (4) is fixedly arranged at the bottom of the support block (5).

4. A drop weight impact testing machine according to claim 1, characterized in that: A pressure plate shaft (8) is installed on the surface of the support block (5), and the surface of the main pressure plate (7) is connected to the pressure plate shaft (8).

5. A drop weight impact testing machine according to claim 1, characterized in that: An adjusting insert cylinder (13) is fixedly arranged at the bottom of the main pressure plate (7), and a positioning sleeve rod (14) is inserted into the hole of the adjusting insert cylinder (13).

6. A drop weight impact testing machine according to claim 1, characterized in that: A circular hole is provided on the surface of the base plate (4), an adjusting nut (16) is installed in the circular hole via a rotating shaft, and an adjusting screw rod (15) is connected to the inner thread of the adjusting nut (16).

7. A drop weight impact testing machine according to claim 6, characterized in that: The top of the adjusting screw rod (15) is sleeved with the bottom of the positioning sleeve rod (14), and a handle is arranged at the bottom of the adjusting screw rod (15).

8. A drop weight impact testing machine according to claim 3, characterized in that: A stop bar screw rod (18) is threadedly connected to the surface of the support block (5), and a limit stop bar (19) is disposed on the outer sleeve of the stop bar screw rod (18).

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