Drop hammer impact testing machine

Abstract

The utility model relates to the technical field of material performance testing, and particularly discloses a drop hammer impact testing machine which comprises a supporting mechanism, a lifting mechanism is arranged on the supporting mechanism, a fixing mechanism for limiting materials is arranged at the bottom of the supporting mechanism, and the lower side of the lifting mechanism is connected with a grabbing mechanism. The grabbing mechanism is driven by the lifting mechanism to move up and down, when a supporting plate moves upwards, the upper end of an L-shaped clamping base makes contact with a conical pushing part, the conical pushing part pushes the L-shaped clamping base to move towards the two sides, the L-shaped clamping base is separated from a connector, the connector, a hammer body and a guide plate integrally fall down to impact materials, and then the supporting plate is put down by the lifting mechanism; the lower end of the L-shaped clamping seat makes contact with the upper side face of the connector, the connector pushes the L-shaped clamping seat to move towards the outer side till the L-shaped clamping seat is clamped on the connector, the L-shaped clamping seat is lifted upwards again to lift the whole guide plate, rapid clamping or loosening of the connector by the L-shaped clamping seat is achieved, and stability and convenience of connection of the connector are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to material performance test technical field, in particular to a drop hammer impact testing machine. BACKGROUND

[0002] Drop hammer impact testing machine is a kind of instrument for testing the impact resistance of material. It simulates the impact situation that material may suffer in actual use by letting the hammer of certain mass from a certain height free fall to impact sample, so as to evaluate the impact resistance and other characteristics of material. The drop hammer impact testing machine of the prior art with the announcement number CN 221038514U is lifted to the test height by electromagnet, and the hammer falls after the controller is powered off to the electromagnet. However, the above-mentioned prior art completely relies on electromagnet for adsorption and release when controlling the hammer. In the process of use, the hammer is only adsorbed by contact plane. In the continuous lifting process, the adsorption surface may be mixed with impurities, which may cause insufficient suction force, resulting in interruption of the use process and affecting the use. SUMMARY

[0003] The utility model aims at providing a drop hammer impact testing machine to solve the above-mentioned problems.

[0004] The utility model realizes the above-mentioned purposes by the following technical solutions:

[0005] A drop hammer impact testing machine, comprising a support mechanism, the support mechanism comprises a bottom box, the upper end of the bottom box is provided with a box cover, the front wall of the bottom box is provided with a box door, the bottom box is vertically provided with a support column, the upper end of the support column is fixedly provided with a top plate, the top plate is provided with a lifting mechanism, the inner bottom of the bottom box is provided with a fixing mechanism, the lifting mechanism comprises a winch, the roller of the winch is wound with a steel wire rope, the upper position of the support column is provided with a limiting plate, the limiting plate is provided with adjusting rings on the upper and lower sides of the support column, the adjusting rings are provided with locking screws, the lower side of the limiting plate is provided with a grabbing mechanism, the grabbing mechanism comprises a support plate provided on the support column, the support plate is vertically provided with a sliding slot, the sliding slot is provided with L-shaped clamping seats, the L-shaped clamping seats are oppositely provided with two, the L-shaped clamping seats are fixedly provided with springs away from one end, the support plate is fixedly provided with a lifting ring in the middle of the L-shaped clamping seat, the lower end of the limiting plate is provided with a conical push on the upper side of the lifting ring, the steel wire rope passes through the limiting plate and is fixed on the lifting ring, the lower side of the support plate is provided with a guide plate, the guide plate is fixedly provided with a connecting head, the upper end of the connecting head is inverted conical, the connecting head is provided with a hammer at the lower end, the inner side of the upper end of the L-shaped clamping seat is provided with a slope corresponding to the conical push, the lower end of the L-shaped clamping seat is provided with a slope corresponding to the outer side of the connecting head.

[0006] Further provided: the L-shaped clamping seat is slidably connected with the support plate, and the support plate is slidably connected with the support column.

[0007] Further setting: the guide plate is slidably connected with the support column, and the connecting head, the center of the L-shaped clamping seat and the conical pushing part are located on the same vertical center line.

[0008] Further setting: the limiting plate and the adjusting ring are slidably connected with the support column, and the locking screw on the adjusting ring is threadedly connected through the adjusting ring.

[0009] Further setting: the box cover is provided with a through groove, and the guide plate and the support plate pass through the through groove on the box cover.

[0010] Further setting: the fixing mechanism comprises a stud vertically fixed on the bottom of the bottom box, a pressing plate is sleeved on the stud, and a locking nut is arranged on the upper side of the pressing plate.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] Through the up-down movement of the lifting mechanism and the grabbing mechanism, when the support plate moves upward, the upper end of the L-shaped clamping seat is in contact with the conical pushing part, the conical pushing part drives the L-shaped clamping seat to move to both sides to overcome the spring force, the L-shaped clamping seat is separated from the connecting head, the connecting head, the hammer body and the guide plate fall down as a whole to impact the material, then the lifting mechanism lowers the support plate, the lower end of the L-shaped clamping seat is in contact with the upper side of the connecting head, the connecting head pushes the L-shaped clamping seat to move outward, until the L-shaped clamping seat is clamped on the connecting head, the L-shaped clamping seat is lifted upward again to lift the guide plate as a whole, the L-shaped clamping seat is quickly clamped or released from the connecting head, and the stability and convenience of the connection of the connecting head are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings.

[0014] Figure 1 It is a structure schematic view of the drop hammer impact testing machine.

[0015] Figure 2 It is a partial sectional structure schematic view of the drop hammer impact testing machine.

[0016] Figure 3 It is a main sectional structure schematic view of the grabbing mechanism of the drop hammer impact testing machine.

[0017] Figure 4 It is a half sectional structure schematic view of the grabbing mechanism of the drop hammer impact testing machine.

[0018] Figure 5 It is a structural schematic diagram of a grabbing mechanism of a drop weight impact testing machine described in the present invention in a disassembled state.

[0019] The following are the descriptions of the reference numerals:

[0020] 1. Bottom box; 11. Box door; 12. Box cover; 13. Pillar; 14. Top plate; 21. Stud; 22. Pressure plate; 31. Winch; 32. Wire rope; 33. Limit plate; 34. Adjustment ring; 35. Conical pusher; 41. Guide plate; 42. Connector; 43. Hammer; 51. Support plate; 52. Slide; 53. L-shaped holder; 54. Spring; 55. Lifting ring. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] like Figures 1-5 As shown, a drop weight impact testing machine includes a support mechanism, a lifting mechanism is provided on the support mechanism, a fixing mechanism for limiting the position of the material is provided at the bottom of the support mechanism, and a gripping mechanism is connected to the lower side of the lifting mechanism;

[0025] In this embodiment: the supporting mechanism comprises a bottom box 1, the upper end of the bottom box 1 is provided with a box cover 12, the front wall of the bottom box 1 is provided with a box door 11, the box door 11 is rotatably connected with the bottom box 1, and a lock catch is arranged between the box door 11 and the bottom box 1, a support column 13 is vertically arranged on the bottom box 1, and a top plate 14 is fixed to the upper end of the support column 13;

[0026] In this embodiment: the fixing mechanism comprises a threaded stud 21 vertically fixed on the bottom of the bottom box 1, a pressing plate 22 is sleeved on the threaded stud 21, a locking nut is arranged on the upper side of the pressing plate 22, the pressing plate 22 is pressed on the test material, and the locking nut on the threaded stud 21 is locked downward to fix the test material.

[0027] In this embodiment: the lifting mechanism comprises a winch 31, a steel wire rope 32 is wound on the roller of the winch 31, a limiting plate 33 is arranged on the support column 13 at an upper position, adjusting rings 34 are sleeved on the upper and lower sides of the limiting plate 33 on the support column 13, locking screws are arranged on the adjusting rings 34, the limiting plate 33 and the adjusting rings 34 are slidably connected with the support column 13, the locking screws on the adjusting rings 34 are threadedly connected through the adjusting rings 34, the limiting plate 33 is fixed by locking of the adjusting rings 34 on the support column 13, the adjustment of the impact height is realized, the winch 31 drives the steel wire rope 32 to wind or release the rope, and the position adjustment of the grabbing mechanism is realized.

[0028] In this embodiment, the grabbing mechanism includes a support plate 51 provided on the pillar 13, a slide groove 52 is vertically penetrated on the support plate 51, an L-shaped clamping seat 53 is provided in the slide groove 52, the L-shaped clamping seat 53 is relatively provided at two locations, a spring 54 is fixed to one end of the L-shaped clamping seat 53 away from the support plate 51, a lifting ring 55 is fixed in the middle of the L-shaped clamping seat 53, the lower end of the limit plate 33 is located on the upper side of the lifting ring 55 and a conical push 35 is provided. The wire rope 32 passes through the limit plate 3 3 is fixed on the lifting ring 55. A guide plate 41 is provided on the lower side of the support plate 51. A connector 42 is fixed on the guide plate 41. The upper end of the connector 42 is in an inverted cone shape. A hammer 43 is provided on the lower end of the connector 42. An inclined surface corresponding to the conical push 35 is provided on the inner side opposite to the upper end of the L-shaped holder 53. An inclined surface corresponding to the outer side of the connector 42 is provided on the lower end of the L-shaped holder 53. The L-shaped holder 53 is slidably connected to the support plate 51. The support plate 51 is connected to the pillar 13. Sliding connection; the guide plate 41 is slidably connected to the support 13, and the connector 42 is on the same vertical center line as the center of the L-shaped holder 53 and the conical push 35; a through slot is provided on the box cover 12, and the guide plate 41 and the support plate 51 pass through the through slot on the box cover 12; the support plate 51 is moved upward as a whole by the lifting mechanism until the upper end of the L-shaped holder 53 contacts the conical push 35, and the conical push 35 pushes the L-shaped holder 53 to overcome the force of the spring 54 and move to both sides, so that the L The L-shaped holder 53 is separated from the connecting head 42, and the connecting head 42, the hammer 43 and the guide plate 41 fall downward as a whole. Then the winch 31 rotates in the opposite direction, and the support plate 51 falls downward, so that the lower end of the L-shaped holder 53 contacts the upper side of the connecting head 42, pushing the L-shaped holder 53 to move outward until the L-shaped holder 53 is clamped on the connecting head 42, and then it is lifted upward again to lift the guide plate 41 as a whole, so that the L-shaped holder 53 can quickly clamp or release the connecting head 42.

[0029] The working principle and use process of the utility model are as follows: the test material is placed on the bottom of the bottom box 1, the pressure plate 22 is used to press the test material, the locking nut on the stud 21 is locked downward, the position of the adjusting ring 34 on the support 13 is adjusted, the position of the limit plate 33 is limited, the hoist 31 works to wind the wire rope 32 upward, so that the upper end of the L-shaped clamping seat 53 on the support plate 51 contacts the conical push 35, and the conical push 35 pushes the L-shaped clamping seat 53 to overcome the spring 5 The force moves to both sides, causing the L-shaped clamping seat 53 to separate from the connecting head 42, and the connecting head 42, the hammer body 43 and the guide plate 41 fall downward as a whole. Then the winch 31 rotates in the opposite direction, and the support plate 51 falls downward, causing the lower end of the L-shaped clamping seat 53 to contact the upper side of the connecting head 42, pushing the L-shaped clamping seat 53 to move outward until the L-shaped clamping seat 53 is clamped on the connecting head 42. The guide plate 41 is lifted upward again to lift the whole, so that the hammer body 43 can achieve multiple intermittent impacts.

[0030] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A drop hammer impact tester, comprising a supporting mechanism, wherein the supporting mechanism comprises a bottom box (1), a box cover (12) is provided at the upper end of the bottom box (1), a box door (11) is provided on the front wall of the bottom box (1), a pillar (13) is vertically provided on the bottom box (1), a top plate (14) is fixed to the upper end of the pillar (13), a lifting mechanism is provided on the top plate (14), a fixing mechanism is provided at the bottom inside the bottom box (1), the lifting mechanism comprises a winch (31), a steel wire rope (32) is wound around the roller of the winch (31), a limit plate (33) is provided at the upper position of the pillar (13), and an adjustment ring (34) is provided on the upper and lower sides of the limit plate (33) located on the pillar (13), and a locking screw is installed on the adjustment ring (34), characterized in that: A gripping mechanism is provided on the lower side of the limit plate (33), and the gripping mechanism comprises a support plate (51) provided on the pillar (13), a slide groove (52) is provided vertically through the support plate (51), an L-shaped clamping seat (53) is provided in the slide groove (52), and the L-shaped clamping seat (53) is provided at two locations opposite to each other, a spring (54) is fixed at one end of the L-shaped clamping seat (53), a hanging ring (55) is fixed in the middle of the L-shaped clamping seat (53) on the support plate (51), and the lower end of the limit plate (33) is provided on the upper side of the hanging ring (55). There is a conical pusher (35), the steel wire rope (32) passes through the limit plate (33) and is fixed on the lifting ring (55), a guide plate (41) is provided on the lower side of the support plate (51), a connector (42) is fixed on the guide plate (41), the upper end of the connector (42) is in an inverted cone shape, and a hammer (43) is provided on the lower end of the connector (42), an inclined surface corresponding to the conical pusher (35) is provided on the inner side opposite surface of the upper end of the L-shaped clamping seat (53), and an inclined surface corresponding to the outer side surface of the connector (42) is provided on the lower end of the L-shaped clamping seat (53).

2. A drop weight impact testing machine according to claim 1, characterized in that: The L-shaped holding seat (53) is slidably connected to the support plate (51), and the support plate (51) is slidably connected to the pillar (13).

3. The drop weight impact testing machine according to claim 1, characterized in that: The guide plate (41) is slidably connected to the pillar (13), and the connecting head (42), the center of the L-shaped clamping seat (53), and the conical pusher (35) are located on the same vertical center line.

4. The drop weight impact testing machine according to claim 1, characterized in that: The limiting plate (33) and the adjusting ring (34) are slidably connected to the pillar (13), and the locking screw on the adjusting ring (34) passes through the adjusting ring (34) and is threadedly connected.

5. The drop weight impact testing machine according to claim 1, characterized in that: A through slot is provided on the box cover (12), and the guide plate (41) and the support plate (51) pass through the through slot on the box cover (12).

6. The drop weight impact testing machine according to claim 1, characterized in that: The fixing mechanism comprises a stud (21) vertically fixed on the bottom of the bottom box (1), a pressure plate (22) is sleeved on the stud (21), and a locking nut is installed on the stud (21) on the upper side of the pressure plate (22).

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