Drop hammer assembly and drop hammer impact testing machine

Abstract

The utility model discloses a drop hammer assembly and a drop hammer impact testing machine, and relates to the technical field of drop hammer impact testing machines, the drop hammer assembly comprises an upper panel, a hammer body plate, a hammer head, a side panel, a limiting rod, a balancing weight and a lifting block, the hammer body plate is located below the upper panel, the hammer head is connected to the bottom of the hammer body plate, and the side panel is located below the side panel. The side panel is detachably connected with the upper panel and the hammer body plate, the limiting rod is detachably connected to the hammer body plate and located between the upper panel and the hammer body plate, the balancing weight is placed on the hammer body plate, the balancing weight is provided with a limiting groove, the limiting rod is matched with the limiting groove, the locking piece is connected with the limiting rod, and the bottom of the locking piece abuts against the balancing weight to lock the balancing weight. The lifting block is configured to be detachably connected to the top of the upper panel or detachably connected to the top of the hammer body plate, the weight of the drop hammer assembly can be adjusted by adjusting the balancing weight, and the drop hammer assembly has two combined states and can be switched between a high-energy impact state and a low-energy impact state.

Description

Technical Field

[0001] This utility model relates to the technical field of drop hammer impact testing machines, and particularly to drop hammer components and drop hammer impact testing machines. Background Technology

[0002] Currently, commercially available NDT (Non-Destructive Testing) drop hammer impact testing machines are designed with a relatively high overall height to achieve a certain impact energy. This allows the drop hammer to be positioned higher, thus ensuring the impact energy meets standard requirements. However, this design prevents the machine from being placed in standard laboratories due to their lower ceilings, necessitating the construction of separate, higher-ceilinged laboratories and further increasing testing costs. Therefore, it is essential for companies to develop a drop hammer impact testing machine that is shorter yet meets standard requirements for full-energy testing. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a drop hammer assembly. By adjusting the counterweight, the weight of the drop hammer assembly can be adjusted. When the height of the entire equipment is limited, the impact energy of the drop hammer assembly can still meet the requirements. Moreover, the drop hammer assembly has two combined states, which can be switched between a high-energy impact state and a low-energy impact state.

[0004] This utility model also proposes a drop hammer impact testing machine having the above-mentioned drop hammer assembly.

[0005] A drop hammer assembly according to a first aspect of the present invention includes: a top panel; a hammer body plate located below the top panel; a hammer head connected to the bottom of the hammer body plate; a side panel detachably connected to the top panel and the hammer body plate; a limiting rod detachably connected to the hammer body plate and located between the top panel and the hammer body plate; a counterweight placed on the hammer body plate, the counterweight having a limiting groove, the limiting rod engaging with the limiting groove; a locking member connected to the limiting rod, the bottom of the locking member abutting against the counterweight to lock the counterweight; and a lifting block configured to be detachably connected to the top of the top panel or detachably connected to the top of the hammer body plate.

[0006] The drop hammer assembly according to the embodiments of this utility model has at least the following beneficial effects: In use, the drop hammer assembly has two combined states. In the first state, the side panel connects the top panel and the hammer plate together, the lifting block is connected to the top of the top panel, and the limiting rod is connected to the hammer plate. At this time, a counterweight can be placed on the hammer plate and the locking device is tightened. The locking device locks the counterweight. By adjusting the number or weight of the counterweight, the gravity of the drop hammer assembly can be adjusted. When the rising height of the drop hammer assembly is limited, the impact energy of the drop hammer assembly can be increased by adding counterweights. This allows the overall height of the equipment to be reduced, enabling it to be placed in floors with lower heights. In addition, the drop hammer assembly also has a second state. Based on the first state, the side panel, limiting rod, and counterweight are removed, and the lifting block is installed on the top of the hammer plate. At this time, only the hammer plate and hammer head remain in the main structure. The overall weight of the drop hammer assembly is lower. It can be understood that the second state is a low-energy impact state, and the first state is a high-energy impact state, which can meet various experimental requirements.

[0007] According to some embodiments of the present invention, the side panel extends in the vertical direction, the upper end of the side panel is connected to the upper panel by fasteners, the lower end of the side panel is connected to the hammer plate by fasteners, and there are two side panels, which are respectively located at both ends of the hammer plate.

[0008] According to some embodiments of this utility model, the limiting groove is a U-shaped groove.

[0009] According to some embodiments of this utility model, the limiting rod is configured as a screw, and the locking member is threadedly connected to the screw.

[0010] According to some embodiments of the present invention, the length of the hammer plate is equal to the length of the upper panel, and the hammer plate and the upper panel are parallel to each other.

[0011] A drop hammer impact testing machine according to a second aspect of the present invention includes: a drop hammer assembly according to the first aspect embodiment; and a lifting mechanism including a connecting rope connected to the lifting block, the lifting mechanism being used to drive the drop hammer assembly to rise.

[0012] The drop hammer impact testing machine according to the present utility model includes the drop hammer assembly of the first aspect embodiment, and therefore has at least the above-mentioned beneficial effects, which will not be repeated here.

[0013] According to some embodiments of the present invention, the upper panel is provided with a first mounting hole, the drop hammer assembly includes a first linear bearing, the first linear bearing is mounted in the first mounting hole, the upper panel is provided with a detachable split block, the split block is used to lock the first linear bearing in the first mounting hole, the drop hammer impact testing machine includes a guide column extending in the vertical direction, and the first linear bearing is slidably connected to the guide column.

[0014] According to some embodiments of the present invention, the hammer plate is provided with a second mounting hole, the drop hammer assembly includes a second linear bearing, the second linear bearing is installed in the second mounting hole, and the guide column is slidably connected to the second linear bearing.

[0015] According to some embodiments of the present invention, the drop hammer impact testing machine includes a top plate, a base, and a column. The top plate is located above the base, the column is connected between the top plate and the base, the guide column is connected between the top plate and the base, the lifting mechanism is located above the top plate, and the drop hammer assembly is located between the top plate and the base.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of the drop hammer assembly in some embodiments of this utility model;

[0019] Figure 2 This is an exploded view of the drop hammer assembly of some embodiments of the present invention;

[0020] Figure 3 An exploded view of another combination of the drop hammer assembly according to some embodiments of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a drop hammer impact testing machine according to some embodiments of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of a drop hammer impact testing machine according to some embodiments of the present invention.

[0023] Figure label:

[0024] Drop hammer impact testing machine 1000;

[0025] The components include: a drop hammer assembly 100, a top panel 110, a first mounting hole 111, a splitting block 112, a hammer body plate 120, a limiting rod 121, a locking component 122, a hammer head 123, a second mounting hole 124, a side panel 130, a counterweight block 140, a limiting groove 141, a lifting block 150, a first linear bearing 160, a self-lubricating copper sleeve 161, a bearing cover 162, and a second linear bearing 170.

[0026] Lifting mechanism 200, connecting rope 210;

[0027] Top plate 300, base 310, column 320, guide column 330, sample support 340, fall arrestor 350. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] According to the American standard ASTM E208 "Ferritic steels - Drop hammer test for non-plastic transformation temperature" and the Chinese standard GBT 6803 "Ferritic steels - Drop hammer test for non-plastic transformation temperature", the drop hammer performance of ferritic steels is required to be tested. This performance test requires a drop hammer impact testing machine with an impact energy of 340J to 1650J.

[0030] Currently, the impact height of commercially available 2000J drop hammer testing machines is around 2.9 meters, while the overall height of the machine is approximately 4.2 meters. This makes it unsuitable for use in ordinary laboratories (where the floor height is generally between 3.0 and 3.6 meters), requiring companies to configure separate laboratories with higher ceilings, further increasing testing costs. Therefore, it is necessary for companies to invent a drop hammer impact testing machine that allows for controlled equipment height while meeting standard requirements for full-energy testing.

[0031] Reference Figure 1 and Figure 2 As shown, this is a drop hammer assembly 100 provided in an embodiment of the present invention. The drop hammer assembly 100 is used in an NDT drop hammer impact testing machine 1000. The drop hammer assembly 100 includes a top panel 110, a hammer body plate 120, a hammer head 123, a side panel 130, a limiting rod 121, a counterweight block 140, and a lifting block 150. The drop hammer assembly 100 has two combined states, wherein, referring to... Figure 1As shown, in the first state, the hammer plate 120 is located below the upper panel 110, the hammer head 123 is connected to the bottom of the hammer plate 120, the side panel 130 is detachably connected to the upper panel 110 and the hammer plate 120, the limiting rod 121 extends in the vertical direction, the limiting rod 121 is detachably connected to the hammer plate 120 and is located between the upper panel 110 and the hammer plate 120, the counterweight 140 is placed on the hammer plate 120, the counterweight 140 is provided with a limiting groove 141, the limiting rod 121 cooperates with the limiting groove 141, the locking member 122 is connected to the limiting rod 121, the bottom of the locking member 122 abuts against the counterweight 140 to lock the counterweight 140, and the lifting block 150 is detachably connected to the top of the upper panel 110. At this time, the weight of the drop hammer assembly 100 is relatively large, and the drop hammer assembly 100 is in a high-energy impact state, which meets the requirements of high-energy impact test. In addition, the gravity of the drop hammer assembly 100 can be adjusted by adjusting the number or weight of the counterweights 140. When the rising height of the drop hammer assembly 100 is limited, the impact energy of the drop hammer assembly 100 can be increased by adding counterweights 140. In this way, the height of the whole machine can be reduced, so that it can be placed in floors with lower height.

[0032] Reference Figure 3 As shown, this is the second state of the drop hammer assembly 100. Based on the first state, the side panel 130, the limiting rod 121 and the counterweight 140 are removed, and the lifting block 150 is installed on the top of the hammer plate 120. At this time, the main structure only has the hammer plate 120 and the hammer head 123. The overall weight of the drop hammer assembly 100 is low. It can be understood that the second state is a low-energy impact state, which meets the requirements of low-energy impact test.

[0033] Reference Figure 1 As shown, in some embodiments, the upper panel 110 extends horizontally, and the side panel 130 extends vertically. The upper end of the side panel 130 is connected to the upper panel 110 by fasteners, and the lower end of the side panel 130 is connected to the hammer plate 120 by fasteners, which are screws. There are two side panels 130, which are located at the two ends of the hammer plate 120 respectively. The drop hammer assembly 100 can be understood as a square frame structure with good structural strength.

[0034] Reference Figure 1 As shown, in some embodiments, the limiting groove 141 is a U-shaped groove, which facilitates the counterweight 140 to be inserted into the limiting rod 121 in the horizontal direction. In some embodiments, the limiting rod 121 is a screw, and the locking member 122 is threadedly connected to the screw. By tightening the locking member 122, the counterweight 140 can be locked.

[0035] Reference Figure 4 and Figure 5As shown, the drop hammer impact testing machine 1000 provided in this embodiment includes a drop hammer assembly 100 and a lifting mechanism 200. The lifting mechanism 200 is located above the drop hammer assembly 100 and includes a connecting rope 210 connected to a lifting block 150. The lifting mechanism 200 is used to drive the drop hammer assembly 100 upward. The lifting mechanism 200 includes a motor that can pull or release the connecting rope 210. The drop hammer impact testing machine 1000 has a relatively small overall height, with the overall height of the equipment controlled within 3.0 meters (total equipment height is 2.875 meters), and the impact height is between 750mm and 2100mm. This instrument provides ordinary users with a choice of testing equipment that can control the overall height of the equipment to below 3 meters, allowing it to be placed in laboratories with ordinary floor heights, and can cover a full range of energy levels, further reducing unnecessary investment for enterprises.

[0036] In some embodiments, refer to Figure 2 As shown, the upper panel 110 is provided with a first mounting hole 111. The drop hammer assembly 100 includes a first linear bearing 160, which is mounted in the first mounting hole 111. The upper panel 110 is provided with a detachable split block 112, which is used to lock the first linear bearing 160 in the first mounting hole 111. It can be understood that the split block 112 and the body of the upper panel 110 define the aforementioned first mounting hole 111. The split block 112 and the body of the upper panel 110 are connected by fasteners for fastening. The component is a screw. After disassembling the disassembly block 112, the first linear bearing 160 can be removed. The drop hammer impact testing machine 1000 includes a guide post 330 extending in the vertical direction. The first linear bearing 160 is slidably connected to the guide post 330. With the upper plate 110 slidably connected to the guide post 330 via the first linear bearing 160, the upper plate 110 can also be easily disassembled. In addition, the length of the hammer plate 120 can be made equal to the length of the upper plate 110, and the weight distribution of the drop hammer assembly 100 is more uniform.

[0037] In some embodiments, refer to Figure 2 As shown, the first linear bearing 160 includes a detachable self-lubricating copper sleeve 161 and a bearing cover 162. The self-lubricating copper sleeve 161 and the bearing cover 162 can be configured to be detachable in half, that is, the self-lubricating copper sleeve 161 and the bearing cover 162 can be disassembled into two halves for easy disassembly.

[0038] In some embodiments, refer to Figure 2 and Figure 3As shown, the hammer plate 120 is provided with a second mounting hole 124, and the drop hammer assembly 100 includes a second linear bearing 170. The structure of the second linear bearing 170 is the same as that of the first linear bearing 160. The second linear bearing 170 is installed in the second mounting hole 124, and the guide post 330 is slidably connected to the second linear bearing 170.

[0039] In some embodiments, refer to Figure 4 As shown, the drop hammer impact testing machine 1000 includes a top plate 300, a base 310, and a column 320. The top plate 300 is located above the base 310. The base 310 is provided with a sample support 340 for placing the sample. The column 320 is connected between the top plate 300 and the base 310 and plays a supporting role. The guide column 330 is connected between the top plate 300 and the base 310. The lifting mechanism 200 is located above the top plate 300. The drop hammer assembly 100 is located between the top plate 300 and the base 310. This arrangement can make the structure of the drop hammer impact testing machine 1000 have greater strength.

[0040] In some embodiments, refer to Figure 4 As shown, the drop hammer impact testing machine 1000 includes a fall arrestor 350, which is used to safely support the drop hammer assembly 100 and plays a protective role. The fall arrestor 350 has a cuboid frame structure and pulleys at the bottom of the fall arrestor 350, which allows the fall arrestor 350 to move.

[0041] The drop hammer impact testing machine 1000 in this embodiment is a variable weight NDT drop hammer testing machine, which is mainly used to test the drop hammer performance of ferritic steel at the non-plastic transformation temperature.

[0042] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0043] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0044] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A drop hammer assembly, characterized in that, include: Top panel; The hammer plate is located below the upper panel; The hammer head is connected to the bottom of the hammer body plate; The side panel is detachably connected to the upper panel and the hammer plate. A limiting rod is detachably connected to the hammer plate and located between the upper panel and the hammer plate; A counterweight is placed on the hammer plate, and the counterweight is provided with a limiting groove. The limiting rod cooperates with the limiting groove. A locking component is connected to the limiting rod, and the bottom of the locking component abuts against the counterweight to lock the counterweight. The lifting block is configured to be detachably connected to the top of the upper panel or detachably connected to the top of the hammer plate.

2. The drop hammer assembly according to claim 1, characterized in that, The side panel extends vertically, and the upper end of the side panel is connected to the upper panel by fasteners. The lower end of the side panel is connected to the hammer plate by fasteners. There are two side panels, which are located at opposite ends of the hammer plate.

3. The drop hammer assembly according to claim 1, characterized in that, The limiting groove is a U-shaped groove.

4. The drop hammer assembly according to claim 1, characterized in that, The limiting rod is configured as a screw, and the locking member is threadedly connected to the screw.

5. The drop hammer assembly according to claim 1, characterized in that, The length of the hammer plate is equal to the length of the upper panel, and the hammer plate and the upper panel are parallel to each other.

6. A drop hammer impact testing machine, characterized in that, include: The drop hammer assembly according to any one of claims 1 to 5; The lifting mechanism includes a connecting rope connected to the lifting block, and the lifting mechanism is used to drive the drop hammer assembly to rise.

7. The drop hammer impact testing machine according to claim 6, characterized in that, The upper panel is provided with a first mounting hole, the drop hammer assembly includes a first linear bearing, the first linear bearing is mounted in the first mounting hole, the upper panel is provided with a detachable split block, the split block is used to lock the first linear bearing in the first mounting hole, the drop hammer impact testing machine includes a guide column extending in the vertical direction, and the first linear bearing is slidably connected to the guide column.

8. The drop hammer impact testing machine according to claim 7, characterized in that, The hammer plate is provided with a second mounting hole, the drop hammer assembly includes a second linear bearing, the second linear bearing is installed in the second mounting hole, and the guide column is slidably connected to the second linear bearing.

9. The drop hammer impact testing machine according to claim 7, characterized in that, The drop hammer impact testing machine includes a top plate, a base, and a column. The top plate is located above the base, the column is connected between the top plate and the base, the guide column is connected between the top plate and the base, the lifting mechanism is located above the top plate, and the drop hammer assembly is located between the top plate and the base.

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