Electrically driven lifting pipe drop hammer impact testing machine

Abstract

The utility model discloses electric lifting pipe drop hammer impact testing machine relates to testing instrument technical field, including test subassembly including control cabinet, guide rod, bottom plate and support column, control cabinet lower extreme is fixedly connected with the upper end of guide rod, and the lower extreme of guide rod is fixedly connected with the upper end of bottom plate, and the lower extreme of bottom plate is fixedly connected with the upper end of support column, and the lower extreme of bottom plate is provided with adjusting mechanism, and the upper of adjusting mechanism is provided with fixed mechanism, and adjusting mechanism is used for clamping and fixing to lift pipe, and fixed mechanism is used for replacing hammer head, the utility model discloses adjusting mechanism and fixed mechanism are set up, have solved the drop hammer impact testing equipment on current market usually needs manual adjustment clamp to adapt to different pipe size, this not only time -consuming and labor -intensive, and can easily lead to not firm clamping, influence the accuracy of test result, in addition, the process of replacing hammer head is also relatively cumbersome, cannot quick response different impact energy's demand, reduced the overall efficiency of test's problem.

Description

Technical Field

[0001] This utility model relates to the field of testing instrument technology, specifically to an electric lifting pipe drop hammer impact testing machine. Background Technology

[0002] This utility model relates to an electric lifting pipe drop hammer impact testing machine, which is particularly suitable for testing the impact resistance of pipes of different sizes and types. With the development of industrial technology, the requirements for the strength, durability and performance under extreme conditions of various pipes are getting higher and higher. Traditional drop hammer impact testing equipment often has problems such as poor adaptability, complicated operation and unstable clamping. In particular, it is inefficient and difficult to guarantee the test accuracy when dealing with multiple specifications of pipes.

[0003] Current drop hammer impact testing equipment on the market usually requires manual adjustment of the clamps to adapt to different pipe sizes when facing varying testing needs. This is not only time-consuming and labor-intensive, but also prone to loose clamping, affecting the accuracy of test results. In addition, the process of changing the hammer head is also cumbersome and cannot quickly respond to the needs of different impact energies, reducing the overall efficiency of the test. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide an electric lifting pipe drop hammer impact testing machine, which has the advantages of automatic adjustment, stable clamping, and convenient operation, and solves the problems of poor adaptability, low efficiency, and insufficient precision.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric lifting pipe drop hammer impact testing machine, wherein the testing components include a control cabinet, a guide rod, a base plate, and a support column; the lower end of the control cabinet is fixedly connected to the upper end of the guide rod, the lower end of the guide rod is fixedly connected to the upper end of the base plate, and the lower end of the base plate is fixedly connected to the upper end of the support column. An adjustment mechanism is provided at the lower end of the base plate, and a fixing mechanism is provided above the adjustment mechanism. The adjustment mechanism is used to clamp and fix the lifting pipe, and the fixing mechanism is used to replace the hammer head.

[0006] In a preferred embodiment of this invention, the adjusting mechanism includes a fixed ring, a servo motor, a double-ended screw, a sliding block, an L-shaped plate, a square plate, a guide block, a clamping plate, and a bearing seat. The inner wall of the fixed ring is fixedly connected to the surface of the servo motor. The output end of the servo motor is fixedly connected to the front end of the double-ended screw. The surface of the double-ended screw is threadedly connected to the inner wall of the sliding block. The surface of the sliding block is fixedly connected to the lower end of the L-shaped plate. The surface of the L-shaped plate is slidably connected to the inner wall of the square plate via a groove. The inner wall of the L-shaped plate is slidably connected to both ends of the guide block. The surface of the guide block is in contact with the surface of the clamping plate. The surface of the double-ended screw is rotatably connected to the inner wall of the bearing seat.

[0007] In a preferred embodiment of this invention, the lower ends of the L-shaped plate and the clamping plate are slidably connected to the upper end of the base plate via a sliding groove, the upper end of the bearing seat is fixedly connected to the lower end of the base plate, and the surface of the guide block is fixedly connected to the lower end of the square plate.

[0008] In a preferred embodiment of this utility model, the fixing mechanism includes a hammer head, a fixing block, a connecting shaft, a spring, and a travel plate. The inner wall of the hammer head is in contact with the surface of the fixing block, the surface of the fixing block is fixedly connected to the surface of the connecting shaft, the surface of the connecting shaft is slidably connected to the inner wall of the travel plate, and the spring is sleeved on the surface of the connecting shaft.

[0009] As a preferred embodiment of this invention, the two ends of the spring are fixedly connected to the surfaces of the fixing block and the travel plate, respectively.

[0010] As a preferred embodiment of the present invention, the upper end of the fixing mechanism is provided with a falling hammer assembly, the falling hammer assembly includes a hydraulic pump, a hydraulic cylinder, an X-shaped plate and a stroke groove, the hydraulic pump is located below the hydraulic cylinder, the lower end of the hydraulic cylinder is fixedly connected to the upper end of the X-shaped plate, and the stroke groove is opened at the lower end of the X-shaped plate.

[0011] In a preferred embodiment of this invention, the surface of the hydraulic pump is fixedly connected to the surface of the base plate, the inner wall of the X-shaped plate is slidably connected to the surface of the guide rod, the upper end of the hammer head contacts the lower end of the X-shaped plate, the upper ends of the fixing block and the stroke plate are both slidably connected to the inner wall of the stroke groove, and the upper end of the stroke plate is fixedly connected to the lower end of the X-shaped plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model solves the problems of poor adaptability and complicated operation of traditional equipment by setting up an adjustment mechanism and a fixing mechanism, and achieves the effect of stable clamping and wide applicability.

[0013] 2. This utility model, by setting an adjustment mechanism consisting of a servo motor, a double-headed screw and a sliding block, can automatically adjust the clamping distance according to the width of the pipe, solving the problem of inconvenient clamping of pipes of different sizes, and improving the efficiency of test preparation and clamping stability.

[0014] 3. This utility model achieves convenient installation and firm clamping of the hammer head by setting up a quick fixing mechanism consisting of a spring, a connecting shaft and a fixing block, which solves the problems of cumbersome hammer head replacement and unstable fixing, and improves the flexibility and safety of the test. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main three-dimensional structure provided in an embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of the adjustment mechanism provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the fixed three-dimensional structure provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the main body in vertical cross-section provided in this embodiment of the utility model.

[0016] In the diagram: 1. Test assembly; 101. Control cabinet; 102. Guide rod; 103. Base plate; 104. Support column; 2. Adjustment mechanism; 201. Fixing ring; 202. Servo motor; 203. Double-ended screw; 204. Sliding block; 205. L-shaped plate; 206. Square plate; 207. Guide block; 208. Clamping plate; 209. Bearing seat; 3. Fixing mechanism; 301. Hammer head; 302. Fixing block; 303. Connecting shaft; 304. Spring; 305. Stroke plate; 4. Drop hammer assembly; 401. Hydraulic pump; 402. Hydraulic cylinder; 403. X-shaped plate; 404. Stroke groove. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0021] Example 1 Reference Figure 1-4 This is the first embodiment of the present invention, which provides an electric lifting pipe drop hammer impact testing machine. The test component 1 includes a control cabinet 101, a guide rod 102, a base plate 103, and a support column 104. The lower end of the control cabinet 101 is fixedly connected to the upper end of the guide rod 102, the lower end of the guide rod 102 is fixedly connected to the upper end of the base plate 103, and the lower end of the base plate 103 is fixedly connected to the upper end of the support column 104. An adjustment mechanism 2 is provided at the lower end of the base plate 103, and a fixing mechanism 3 is provided above the adjustment mechanism 2. The adjustment mechanism 2 is used to clamp and fix the lifting pipe, and the fixing mechanism 3 is used to replace the hammer head 301.

[0022] Specifically, this utility model provides an electric lifting pipe drop hammer impact testing machine. By setting up an adjustment mechanism 2 and a fixing mechanism 3, it solves the problems of poor adaptability to pipes of different sizes and unstable clamping of existing equipment. The adjustment mechanism 2 can be adaptively adjusted according to the width of the pipe to achieve clamping; the fixing mechanism 3 effectively improves the stability and replacement efficiency of the hammer head 301 clamping, and ensures the safety and reliability of the test process.

[0023] Furthermore, before conducting the drop hammer impact test on the electric lifting pipe, the staff first placed the pipe to be tested stably in the center of the base plate 103. To ensure the accuracy and safety of the test, the adjustment mechanism 2 and the fixing mechanism 3 were started to work through the control panel on the control cabinet 101 to provide a stable environment for the impact test.

[0024] Example 2 The second embodiment of this utility model provides an electric lifting pipe drop hammer impact testing machine. The adjusting mechanism 2 includes a fixed ring 201, a servo motor 202, a double-ended screw 203, a sliding block 204, an L-shaped plate 205, a square plate 206, a guide block 207, a clamping plate 208, and a bearing seat 209. The inner wall of the fixed ring 201 is fixedly connected to the surface of the servo motor 202. The output end of the servo motor 202 is fixedly connected to the front end of the double-ended screw 203. The surface of the double-ended screw 203 is threadedly connected to the inner wall of the sliding block 204. The surface of the sliding block 204 is threadedly connected to the inner wall of the sliding block 204. The lower end of the L-shaped plate 205 is fixedly connected. The surface of the L-shaped plate 205 is slidably connected to the inner wall of the square plate 206 through a sliding groove. The inner wall of the L-shaped plate 205 is slidably connected to the two end surfaces of the guide block 207. The surface of the guide block 207 is in contact with the surface of the clamping plate 208. The surface of the double-headed screw 203 is rotatably connected to the inner wall of the bearing seat 209. The lower ends of the L-shaped plate 205 and the clamping plate 208 are slidably connected to the upper end of the base plate 103 through a sliding groove. The upper end of the bearing seat 209 is fixedly connected to the lower end of the base plate 103. The surface of the guide block 207 is fixedly connected to the lower end of the square plate 206.

[0025] Specifically, the adjustment mechanism 2 drives the double-headed screw 203 to rotate via the servo motor 202. The screw structure with opposite directions at both ends drives the sliding block 204 to move in the opposite direction, realizing rapid and precise adjustment of pipes of different widths. The sliding block 204 is fixedly connected to the L-shaped plate 205 and achieves stable sliding through the groove on the inner wall of the square plate 206, ensuring that the clamping plate 208 can move smoothly and clamp the pipe. The design of the guide block 207 further enhances the stability of the movement of the L-shaped plate 205, preventing possible deviation or shaking during clamping and improving reliability. In addition, the double-headed screw 203 is firmly installed at the lower end of the base plate 103 through the bearing seat 209, which not only reduces vibration and noise during operation but also extends the service life of the equipment.

[0026] Furthermore, adjustments need to be made according to the pipe size. The left servo motor 202 is started via the control panel. The output end of the motor is fixedly connected to the double-ended screw 203. The double-ended screw 203 has a thread structure with opposite directions of rotation at both ends, and a sliding block 204 is sleeved at each end. The sliding block 204 is fixedly connected to the L-shaped plate 205. The other end of the L-shaped plate 205 is in sliding fit with the inner wall of the square plate 206 through a sliding groove. When the servo motor 202 drives the double-ended screw 203 to rotate, the two sliding blocks 204 will move in opposite directions due to the opposite thread direction, thereby driving the L-shaped plate 205 and the clamping plate 208 to move synchronously. The distance between the clamping blocks can be adjusted according to the different motor rotation directions to achieve effective clamping of pipes of different specifications. The double-ended screw 203 is firmly installed at the lower end of the base plate 103 through the bearing seat 209 to ensure stable and reliable operation.

[0027] Example 3 The second embodiment of this utility model provides an electric lifting pipe drop hammer impact testing machine. The fixing mechanism 3 includes a hammer head 301, a fixing block 302, a connecting shaft 303, a spring 304, and a travel plate 305. The inner wall of the hammer head 301 contacts the surface of the fixing block 302. The surface of the fixing block 302 is fixedly connected to the surface of the connecting shaft 303. The surface of the connecting shaft 303 is slidably connected to the inner wall of the travel plate 305. The spring 304 is sleeved on the surface of the connecting shaft 303. Both ends of the spring 304 are fixedly connected to the surfaces of the fixing block 302 and the travel plate 305, respectively. A drop hammer assembly 4 is provided at the upper end of the fixing mechanism 3. The drop hammer assembly 4 includes... The system includes a hydraulic pump 401, a hydraulic cylinder 402, an X-shaped plate 403, and a stroke groove 404. The hydraulic pump 401 is located below the hydraulic cylinder 402. The lower end of the hydraulic cylinder 402 is fixedly connected to the upper end of the X-shaped plate 403. The stroke groove 404 is located at the lower end of the X-shaped plate 403. The surface of the hydraulic pump 401 is fixedly connected to the surface of the base plate 103. The inner wall of the X-shaped plate 403 is slidably connected to the surface of the guide rod 102. The upper end of the hammer head 301 is in contact with the lower end of the X-shaped plate 403. The upper ends of the fixing block 302 and the stroke plate 305 are slidably connected to the inner wall of the stroke groove 404. The upper end of the stroke plate 305 is fixedly connected to the lower end of the X-shaped plate 403.

[0028] Specifically, the fixing mechanism 3 solves the problems of inconvenient installation and unstable clamping of the hammer head 301 by cooperating with the spring 304, the connecting shaft 303, and the fixing block 302. During operation, the fixing block 302 is moved by pulling the connecting shaft 303, which compresses the spring 304. After being released, the fixing block 302 quickly fits against the inner wall of the hammer head 301 by relying on the rebound force of the spring 304, thus achieving a stable clamping of the hammer head 301.

[0029] Further, after fixing the pipe, the next step is to install and fix the hammer head 301. The operator pulls the connecting shaft 303 outward. A spring 304 is sleeved on the surface of the shaft. The two ends of the spring 304 are fixedly connected to the fixing block 302 and the travel plate 305, respectively. When the connecting shaft 303 is pulled out, the upper end of the fixing block 302 moves in the travel groove 404 opened at the lower end of the X-shaped plate 403, and the spring 304 is compressed. At this time, the required hammer head 301 is placed in the designated position, and the connecting shaft 303 is released. The spring 304 pushes the fixing block 302 back to its original position due to its own rebound force and fits tightly against the inner wall of the hammer head 301, realizing... The quick fixing of the hammer head 301 not only improves the operational efficiency of changing the hammer head 301, but also enhances the versatility of the equipment, making it easier to select the appropriate impact mass according to the test requirements. After all preparations are completed, the staff starts the hydraulic system again through the control panel. The hydraulic pump 401 drives the hydraulic cylinder 402 to apply downward pressure, pushing the X-shaped plate 403 vertically downward along the guide rod 102, thereby driving the hammer head 301 to impact the fixed pipe. Throughout the process, the guide rod 102 ensures the stability and verticality of the movement trajectory of the hammer head 301, thereby ensuring that the impact energy is accurately applied to the sample.

[0030] Working principle: Before conducting a drop hammer impact test on the electric lifting pipe, the operator first places the pipe to be tested stably in the center of the base plate 103. To ensure the accuracy and safety of the test, adjustments are made according to the pipe size. The left servo motor 202 is then activated via the control panel. The output end of this motor is fixedly connected to a double-ended screw 203. The double-ended screw 203 has oppositely oriented threads at both ends, and sliding blocks 204 are fitted at each end. The sliding blocks 204 are fixedly connected to an L-shaped plate 205. The other end of the L-shaped plate 205 is connected to the inner wall of a square plate 206 via a sliding block. The grooves form a sliding fit. When the servo motor 202 drives the double-ended screw 203 to rotate, the two sliding blocks 204 will move in opposite directions due to the opposite thread directions, thereby driving the L-shaped plate 205 and the clamping plate 208 to move synchronously. The distance between the clamping blocks can be adjusted according to the different motor rotation directions, so as to effectively clamp pipes of different specifications. The double-ended screw 203 is firmly installed on the lower end of the base plate 103 through the bearing seat 209 to ensure stable and reliable operation. After the pipe is fixed, the next step is the installation and fixing of the hammer head 301. The operator then... Pulling out the connecting shaft 303, on which a spring 304 is fitted, with its two ends fixedly connected to the fixing block 302 and the travel plate 305 respectively, when the connecting shaft 303 is pulled out, the upper end of the fixing block 302 moves within the travel groove 404 opened at the lower end of the X-shaped plate 403, compressing the spring 304. At this point, after the desired hammerhead 301 is placed in the designated position and the connecting shaft 303 is released, the spring 304, due to its own rebound force, pushes the fixing block 302 back to its original position and tightly fits against the inner wall of the hammerhead 301, achieving rapid fixing of the hammerhead 301. This not only improves… The improved efficiency of changing the hammer head 301 also enhances the versatility of the equipment, making it easier to select the appropriate impact mass according to the test requirements. After all preparations are completed, the staff starts the hydraulic system again through the control panel. The hydraulic pump 401 drives the hydraulic cylinder 402 to apply downward pressure, pushing the X-shaped plate 403 vertically downward along the guide rod 102, thereby driving the hammer head 301 to impact the fixed pipe. Throughout the process, the guide rod 102 ensures the stability and verticality of the hammer head 301's movement trajectory, thus ensuring that the impact energy is accurately applied to the sample.

[0031] In summary: the combination of servo motor and double-headed screw enables rapid clamping and positioning of pipes of different sizes; the combination of spring, connecting shaft, and fixing block enables convenient installation and fixation of the hammer head; and the combination of hydraulic cylinder, X-shaped plate, and guide rod enables stable descent and precise impact of the hammer head.

[0032] The control cabinet, servo motor, double-ended screw, bearing housing, hammer, spring, hydraulic pump and hydraulic cylinder used in this application can be additionally equipped with protective measures of common knowledge in this technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are common technical means used by those skilled in the art.

[0033] It should be noted that (motor, hydraulic pump, hydraulic cylinder, screw, spring) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0034] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0035] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0036] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An electric lifting pipe drop hammer impact testing machine, characterized in that: The test assembly (1) includes an electric lifting pipe drop hammer impact test assembly (1), which includes a control cabinet (101), a guide rod (102), a base plate (103) and a support column (104). The lower end of the control cabinet (101) is fixedly connected to the upper end of the guide rod (102), the lower end of the guide rod (102) is fixedly connected to the upper end of the base plate (103), and the lower end of the base plate (103) is fixedly connected to the upper end of the support column (104). An adjustment mechanism (2) is provided at the lower end of the base plate (103), and a fixing mechanism (3) is provided above the adjustment mechanism (2). The adjustment mechanism (2) is used to clamp and fix the lifting pipe, and the fixing mechanism (3) is used to replace the hammer (301).

2. The electric lifting pipe drop hammer impact testing machine according to claim 1, characterized in that: The adjustment mechanism (2) includes a fixed ring (201), a servo motor (202), a double-ended screw (203), a sliding block (204), an L-shaped plate (205), a square plate (206), a guide block (207), a clamping plate (208), and a bearing seat (209). The inner wall of the fixed ring (201) is fixedly connected to the surface of the servo motor (202), and the output end of the servo motor (202) is fixedly connected to the front end of the double-ended screw (203). The surface of the double-ended screw (203) is... The inner wall of the sliding block (204) is threaded, the surface of the sliding block (204) is fixedly connected to the lower end of the L-shaped plate (205), the surface of the L-shaped plate (205) is slidably connected to the inner wall of the square plate (206) through a sliding groove, the inner wall of the L-shaped plate (205) is slidably connected to the two end surfaces of the guide block (207), the surface of the guide block (207) is in contact with the surface of the clamping plate (208), and the surface of the double-headed screw (203) is rotatably connected to the inner wall of the bearing seat (209).

3. The electric lifting pipe drop hammer impact testing machine according to claim 2, characterized in that: The lower ends of the L-shaped plate (205), the square plate (206) and the clamping plate (208) are all slidably connected to the upper end of the base plate (103) through a sliding groove. The upper end of the bearing seat (209) is fixedly connected to the lower end of the base plate (103). The surface of the guide block (207) is fixedly connected to the lower end of the square plate (206).

4. The electric lifting pipe drop hammer impact testing machine according to claim 2, characterized in that: The fixing mechanism (3) includes a hammer (301), a fixing block (302), a connecting shaft (303), a spring (304), and a travel plate (305). The inner wall of the hammer (301) is in contact with the surface of the fixing block (302). The surface of the fixing block (302) is fixedly connected to the surface of the connecting shaft (303). The surface of the connecting shaft (303) is slidably connected to the inner wall of the travel plate (305). The spring (304) is sleeved on the surface of the connecting shaft (303).

5. The electric lifting pipe drop hammer impact testing machine according to claim 4, characterized in that: The two ends of the spring (304) are fixedly connected to the surfaces of the fixing block (302) and the travel plate (305), respectively.

6. The electric lifting pipe drop hammer impact testing machine according to claim 4, characterized in that: The upper end of the fixing mechanism (3) is provided with a drop hammer assembly (4). The drop hammer assembly (4) includes a hydraulic pump (401), a hydraulic cylinder (402), an X-shaped plate (403), and a stroke groove (404). The hydraulic pump (401) is located below the hydraulic cylinder (402). The lower end of the hydraulic cylinder (402) is fixedly connected to the upper end of the X-shaped plate (403). The stroke groove (404) is opened at the lower end of the X-shaped plate (403).

7. The electric lifting pipe drop hammer impact testing machine according to claim 6, characterized in that: The surface of the hydraulic pump (401) is fixedly connected to the surface of the base plate (103), the inner wall of the X-shaped plate (403) is slidably connected to the surface of the guide rod (102), the upper end of the hammer (301) is in contact with the lower end of the X-shaped plate (403), the surface of the fixing block (302) is slidably connected to the inner wall of the stroke groove (404), and the upper end of the stroke plate (305) is fixedly connected to the lower end of the X-shaped plate (403).

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