CN210742024U

CN210742024U - Drop hammer impact test device

Info

Publication number: CN210742024U
Application number: CN201921558485.0U
Authority: CN
Inventors: 张传庆; 郭宇航; 高阳; 崔国建; 周辉; 胡大伟
Original assignee: Wuhan Institute of Rock and Soil Mechanics of CAS
Current assignee: Wuhan Institute of Rock and Soil Mechanics of CAS
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-06-12
Anticipated expiration: 2029-09-19

Abstract

An embodiment of the utility model provides a hammer impact test device falls relates to the impact test device field. This drop hammer impact test device includes main body frame and sets up drop hammer, hanging beam, lift subassembly and the buffering subassembly on main body frame, and the lift subassembly sets up the one end at main body frame, and the buffering subassembly sets up the other end at main body frame, and the movably setting of drop hammer is on main body frame, and is located between lift subassembly and the buffering subassembly. The lifting assembly is connected with the hanging beam, the hanging beam is provided with a locking unit, and the locking unit is selectively connected with the drop hammer to lock or release the drop hammer. This hammer impact test device falls utilizes locking and the release of locking unit control hammer that falls, and the security is high, and convenient operation is swift, is favorable to improving impact test's efficiency and the accuracy of test result.

Description

Drop hammer impact test device

Technical Field

The utility model relates to an impact test device field particularly, relates to a hammer impact test device falls.

Background

Research shows that the drop hammer impact test device needs to enable a drop hammer to freely drop from a high position, impact a rod piece by utilizing impact energy generated by dropping, and apply axial force to the rod piece so as to test the maximum axial force capable of being borne by the rod piece.

At present, operations such as lifting of a drop hammer in a test process, fixing of an initial position and the like are inconvenient, and due to the fact that the drop hammer is large in mass, phenomena such as dropping and the like easily occur in the test operation process, and unnecessary safety problems are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drop hammer impact test device, for example, it can improve the security among the drop hammer test process, and the fixed and release of the hammer of being convenient for fall is favorable to improving impact test's convenience and security.

The embodiment of the utility model discloses a can realize like this:

in a first aspect, an embodiment of the present invention provides a drop hammer impact test device, which includes a main body frame, and a drop hammer, a hanging beam, a lifting assembly and a buffering assembly, which are disposed on the main body frame, wherein the lifting assembly is disposed at one end of the main body frame, the buffering assembly is disposed at the other end of the main body frame, and the drop hammer is movably disposed on the main body frame and located between the lifting assembly and the buffering assembly;

the lifting assembly is connected with the hanging beam, a locking unit is arranged on the hanging beam, and the locking unit is selectively connected with the drop hammer to lock or release the drop hammer.

In an alternative embodiment, the locking unit comprises a driving assembly, a rotating shaft and a clamping block; the fixture block is fixed on the rotating shaft, and the driving assembly is connected with the rotating shaft and used for driving the rotating shaft to rotate so as to enable the fixture block to be selectively connected with the drop hammer.

In an optional embodiment, the driving assembly includes a telescopic element, a pull rod, a connecting rod and a swing rod, the swing rod is connected to the rotating shaft, the connecting rod is hinged to the swing rod, the pull rod is fixedly connected to the connecting rod, and the telescopic element is fixedly connected to the pull rod.

In an alternative embodiment, two ends of the connecting rod are respectively connected with one of the swinging rods, and each swinging rod is connected with one of the rotating shafts.

In an optional embodiment, the fixture block is provided with an anti-slip part, and the anti-slip part is used for abutting against the drop hammer.

In an alternative embodiment, the drop hammer comprises a housing shelf and a weight, the weight being mounted on the housing shelf; and a clamping groove is arranged on the containing frame and used for being selectively clamped with the locking unit.

In an alternative embodiment, the main body frame includes a plurality of guide bars, and the drop hammer is connected to and slidable along the guide bars.

In an alternative embodiment, a protection part is arranged on the main body frame, the protection part comprises a protection plate and a protection rod, one end of the protection rod is fixedly connected with the protection plate, and the other end of the protection rod is connected with the guide rod.

In an alternative embodiment, the cushion assembly includes a pad and a cushion plate mounted on the pad, the pad being fixed within the body frame.

In an optional implementation mode, the buffer assembly comprises a beam, a buffer column and a connecting column, the buffer column is installed in the main body frame, the beam is arranged on the buffer column, one end of the connecting column is connected with the beam, and the other end of the connecting column is connected with the pad.

The utility model discloses beneficial effect includes, for example:

the drop hammer impact test device provided by the embodiment can be selectively connected with a drop hammer by arranging the locking unit on the hanging beam. When the locking unit is connected with the drop hammer, the drop hammer can be fixed, and the drop hammer is prevented from falling. When the locking unit is not connected with the drop hammer, the drop hammer can be released, and impact energy generated by dropping of the drop hammer is applied to the test rod piece to complete an impact test. The drop hammer impact test device is convenient to operate, can quickly realize fixation and release of a drop hammer, and is high in safety performance and good in reliability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an entire drop hammer impact test apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first view angle of a main frame of a drop hammer impact testing apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second view angle of a main frame of a drop hammer impact testing apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a hanging beam of a drop hammer impact test apparatus according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first viewing angle of a drop hammer impact testing apparatus according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second viewing angle of a drop hammer impact testing apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a first view angle of a locking unit of a drop hammer impact test apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a second view angle of a locking unit of a drop hammer impact test apparatus according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an application scenario of connection between a locking unit and a drop hammer of a drop hammer impact testing apparatus according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a first view angle of a buffering assembly of a drop hammer impact testing apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a second viewing angle of a buffering assembly of a drop hammer impact testing apparatus according to an embodiment of the present invention.

Icon: 100-drop hammer impact test device; 110-a body frame; 101-a column; 103-a top plate; 105-a backplane; 106-protective fence; 107-protective net; 108-stairs; 111-a first guide post; 113-a second guide post; 115-a guard; 116-protective plate; 117-guard bar; 130-drop hammer; 131-weight dropper; 133-a containing rack; 135-a catch; 136-a retaining plate; 1361-first extension; 1363-second extension; 137-a second pilot hole; 138-a guide sliding sleeve; 140-a hanging beam; 141-a first guide hole; 143-a lifting ring; 150-a lifting assembly; 151-drive motor; 152-a speed reducer; 153-a hoist; 154-a lifting rope; 160-a locking unit; 161-a telescopic element; 162-a pull rod; 163-connecting rod; 164-a swing lever; 165-a rotating shaft; 166-rotating the outer sleeve; 167-fixing the plate; 168-a fixture block; 169-a non-slip part; 170-a buffer assembly; 171-a cross beam; 172-buffer column; 173-a saucer; 175-a buffer plate; 177-connecting column; 180-impact head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, the embodiment provides a drop hammer impact testing apparatus 100, which includes a main frame 110, and a drop hammer 130, a hanging beam 140, a lifting assembly 150 and a buffer assembly 170 that are disposed on the main frame 110, wherein the lifting assembly 150 is disposed at one end of the main frame 110, the buffer assembly 170 is disposed at the other end of the main frame 110, and the drop hammer 130 is movably disposed on the main frame 110 and between the lifting assembly 150 and the buffer assembly 170. The lifting assembly 150 is coupled to the hanging beam 140, and the hanging beam 140 is provided with a locking unit 160, and the locking unit 160 is selectively coupled to the drop weight 130 to lock or release the drop weight 130. The locking unit 160 releases the drop weight 130 when it is required for the drop weight 130 to drop the impact test bar. When the drop hammer 130 needs to be lifted to a preset height, the locking unit 160 is connected with the drop hammer 130, and when the lifting assembly 150 lifts the hanging beam 140, the drop hammer 130 rises to the preset height along with the hanging beam 140, so that the drop hammer 130 descends and rises.

Specifically, referring to fig. 2 and 3, the main body frame 110 includes four columns 101, a top plate 103 and a bottom plate 105, the top plate 103 is disposed on the top of the four columns 101, and the lifting assembly 150 is mounted on the top plate 103. The bottom of the four uprights 101 are secured to the base plate 105, the drop weight 130 and the cushion assembly 170 are disposed between the top plate 103 and the base plate 105, and the cushion assembly 170 is disposed adjacent the base plate 105. Two guide posts, namely a first guide post 111 and a second guide post 113, are arranged in the main body frame 110, the two guide posts are arranged oppositely, one end of each guide post is fixed on the top plate 103, and the other end of each guide post is fixed on the bottom plate 105.

Referring to fig. 4, one end of the hanging beam 140 is slidably connected to the first guiding post 111, and the other end is slidably connected to the second guiding post 113. Optionally, two ends of the hanging beam 140 are respectively provided with a first guiding hole 141, a guiding sleeve is respectively installed in the first guiding hole 141, the guiding sleeve and the first guiding hole 141 are coaxially installed, and the first guiding column 111 and the second guiding column 113 respectively penetrate through the guiding sleeve in the first guiding hole 141, so that the hanging beam 140 can ascend or descend along the first guiding column 111 and the second guiding column 113.

Similarly, the drop weight 130 has one end slidably coupled to the first guide post 111 and the other end slidably coupled to the second guide post 113. Referring to fig. 5 and 6, in the embodiment, the drop hammer 130 includes a containing frame 133 and a weight 131 installed in the containing frame 133, and the weight 131 is detachably connected to the containing frame 133, so that the weight 131 can be replaced quickly, and the drop hammer 130 can generate different impact energy after falling by replacing weights 131 with different masses, so as to adapt to tests under different working conditions. Specifically, the two sides of the accommodating frame 133 are respectively provided with a second guiding hole 137 for the first guiding column 111 and the second guiding column 113 to pass through, so that the accommodating frame 133 can move along the first guiding column 111 and the second guiding column 113. In order to reduce friction during relative movement between the housing frame 133 and the guide post and prolong the service life of the device, a guide sliding bush 138 is installed in the second guide hole 137. Optionally, the number of the second guiding holes 137 is four, the top of the accommodating frame 133 is close to one end of the hanging beam 140, and two sides of the accommodating frame are respectively provided with one second guiding hole 137; the two sides of the bottom of the accommodating frame 133 are respectively provided with a second guiding hole 137, so that the accommodating frame 133 can move more stably and reliably, and the stability is improved.

The middle part of the containing frame 133 is provided with a groove for a testing rod to pass through, the testing rod is sleeved with an impact head 180, the impact head 180 is fixedly connected with the bottom of the containing frame 133, the impact head 180 descends along with the drop hammer 130 in the falling process of the drop hammer 130, and the impact head 180 slides down along the testing rod.

The accommodating frame 133 is provided with a locking groove for selectively locking with the locking unit 160. Specifically, the clamping groove forms a clamping space. Optionally, two retaining members 135 are disposed at the top of the accommodating frame 133, each retaining member 135 includes two retaining plates 136, i.e., a first retaining plate 136 and a second retaining plate 136, the first retaining plate 136 and the second retaining plate 136 are disposed opposite to each other, and a retaining space is formed between the first retaining plate 136 and the second retaining plate 136. The first holding plate 136 is provided with a first extending portion 1361 in a protruding manner in a direction approaching the second holding plate 136, the second holding plate 136 is provided with a second extending portion 1363 in a protruding manner in a direction approaching the first holding plate 136, the first extending portion 1361 and the second extending portion 1363 are located on the same plane, and a gap is reserved between the first extending portion 1361 and the second extending portion 1363, so that the clamping block 168 can be clamped conveniently.

Referring to fig. 7 and 8, the hanging beam 140 is provided with a locking unit 160, and the locking unit 160 includes a driving assembly, a rotating shaft 165, a clamping block 168 and a fixing plate 167. The latch 168 is fixed on the rotating shaft 165, and the driving assembly is connected with the rotating shaft 165 and is used for driving the rotating shaft 165 to rotate, so that the latch 168 is selectively connected with the drop hammer 130. Wherein the drive assembly includes a telescoping member 161, a pull rod 162, a link 163, and a swing rod 164. The swing rod 164 is connected with the rotating shaft 165, the connecting rod 163 is hinged with the swing rod 164, the pull rod 162 is fixedly connected with the connecting rod 163, and the telescopic element 161 is fixedly connected with the pull rod 162. Specifically, one end of the pull rod 162 is fixed on the telescopic element 161, and the other end is fixed on the connecting rod 163, and the telescopic element 161 can realize linear telescopic motion to drive the connecting rod 163 to move along a straight line; the connecting rod 163 is hinged to the swing rod 164, the connecting rod 163 moves linearly to drive the swing rod 164 to rotate, and the swing rod 164 drives the rotating shaft 165 to rotate.

The fixed plate 167 is connected with the hanging beam 140, the fixed plate 167 is provided with a rotary outer sleeve 166, the hanging beam 140, the fixed plate 167 and the rotary outer sleeve 166 are all provided with mounting through holes, and the rotating shaft 165 sequentially penetrates through the mounting through holes on the rotary outer sleeve 166, the fixed plate 167 and the hanging beam 140 and can rotate in the mounting through holes. In this embodiment, two ends of the rotating shaft 165 are respectively located at two sides of the fixing plate 167, one end of the rotating shaft 165 located on the upper surface of the fixing plate 167 is fixedly connected to the swing rod 164, and one end of the rotating shaft 165 far away from the swing rod 164 is fixedly connected to the latch 168 and connected to the middle of the latch 168. Alternatively, the telescopic element 161 may be a telescopic cylinder, but is not limited thereto, and the telescopic element 161 may also be a crank block, a lead screw nut, a rack and pinion, or other structures capable of performing a reciprocating linear motion, and is not limited herein.

Optionally, the number of the rotating shafts 165 in this embodiment is two. Two ends of the connecting rod 163 are respectively connected with a swinging rod 164, each swinging rod 164 is connected with a rotating shaft 165, and one end of each rotating shaft 165 far away from the swinging rod 164 is provided with a fixture block 168. The latch 168 is adapted to selectively couple with the catch 135. It is easily understood that the latch 168 has an elongated shape, the width of the latch 168 is smaller than the gap between the first extension 1361 and the second extension 1363, and the length of the latch 168 is greater than the gap between the first extension 1361 and the second extension 1363. When the locking unit 160 needs to fix the drop hammer 130 to prevent the drop hammer 130 from descending, the latch 168 longitudinally enters the latching space, and the width direction of the latch 168 enters the gap between the first extending portion 1361 and the second extending portion 1363, so that the latch 168 can enter the latching space. After entering, the telescopic element 161 moves to drive the swing rod 164 and the rotating shaft 165 to rotate, and the latch 168 rotates with the rotating shaft 165 by a certain angle, as shown in fig. 9, the latch 168 is transversely disposed and abuts against the first extending portion 1361 and the second extending portion 1363. Since the length of the latch 168 is greater than the gap between the first extension 1361 and the second extension 1363, the latch 168 cannot be separated from the gap when the latch is laterally disposed, i.e., the locking unit 160 and the drop hammer 130 are connected. When the locking unit 160 needs to release the drop hammer 130, the telescopic element 161 moves to drive the swing rod 164 and the rotating shaft 165 to rotate, the latch 168 rotates with the rotating shaft 165 by a certain angle from the horizontal arrangement state to the longitudinal arrangement state, and at this time, the latch 168 can be disengaged from the gap between the first extension portion 1361 and the second extension portion 1363 to release the drop hammer 130. It can be easily understood that the linear movement distance of the telescopic element 161 can ensure that the rotating shaft 165 and the clamping block 168 rotate by about ninety degrees, so that the drop hammer 130 can be released and fixed, the operation is simple and convenient, the structure is reliable, and the efficiency and the safety of the impact test can be improved. Alternatively, the block 168 is provided with a slip-preventing portion 169, the slip-preventing portion 169 is provided on a side of the block 168 close to the swing lever 164, and the slip-preventing portion 169 is used for abutting against the drop weight 130. The arrangement makes the block 168 and the holding member 135 more reliably abutted and the safety is increased.

In order to improve the safety and convenience of the main body frame 110, a guard rail 106 is provided on a top plate 103 at the top of the column 101, a guard net 107 is provided on a bottom plate 105, and a stair 108 is further provided at the side of the column 101, so that a worker can conveniently enter the top of the column 101 to perform maintenance, overhaul, installation and other operations, thereby improving the operation safety. Secondly, the main body frame 110 is provided with the protection part 115, the protection part 115 comprises a protection plate 116 and a protection rod 117, one end of the protection rod 117 is fixedly connected with the protection plate 116, and the other end is connected with the upright post 101, so that the connection strength, the overall stability and the safety of the main body frame 110 are improved, and the overall bearing capacity of the main body frame 110 can also be improved.

The lifting assembly 150 comprises a driving motor 151, a speed reducer 152, a winch 153 and a lifting rope 154, wherein the driving motor 151 is in transmission connection with the speed reducer 152, the speed reducer 152 is in transmission connection with the winch 153, and the lifting rope 154 is connected with the winch 153. Optionally, the number of the winches 153 is two, the two winches 153 are respectively in transmission connection with the speed reducer 152, the hanging beam 140 is provided with two hanging rings 143, and each hanging ring 143 is fixedly connected with one hanging rope 154.

Referring to fig. 10 and 11, the buffer assembly 170 includes a pad 173 and a buffer plate 175, the buffer plate 175 is mounted on the pad 173, and the pad 173 is fixed to the main body frame 110. Specifically, two beams 171 and four buffer columns 172 are arranged in the main body frame 110, the four buffer columns 172 are respectively installed on the bottom plate 105, the beam 171 is installed at one end of the buffer column 172 far away from the bottom plate 105, and two ends of one beam 171 are respectively connected with the two buffer columns 172 on the same side; two ends of the other beam 171 are respectively connected with the two buffer columns 172 on the other side. The pads 173 are disposed between the four columns 101, and one end of the pads 173 is fixedly connected to one beam 171 and the other end is fixedly connected to the other beam 171. Alternatively, one end of the connection column 177 is fixedly connected to the pad 173, and the other end is fixedly connected to the cross beam 171. In this embodiment, the pad 173 and the beam 171 are respectively provided with a mounting hole for the connection column 177 to pass through. The connecting column 177 sequentially penetrates through the mounting holes in the cross beam 171 and the pad 173, and nuts are mounted at two ends of the connecting column 177 to realize locking so as to connect the pad 173 with the cross beam 171. Optionally, the number of the connecting columns 177 is four, and two connecting columns 177 are arranged on each cross beam 171, so that the stress of the connecting columns 177 is more uniform, and the stability of the structure is improved. The buffer plate 175 is fixedly installed on the pad 173, and is used for buffering and absorbing the impact energy of the drop hammer 130 after the drop hammer 130 freely falls, thereby performing a buffering and shock-absorbing function.

According to the drop hammer impact test device 100 provided by the embodiment, the working principle is as follows:

this drop hammer impact test device 100 can be used to test the maximum axial bearing capacity of the stock, at first, puts into the stock cover with the stock, and towards the grout in the stock cover, and it is easy to understand, and the grout can adopt the mode of full slip casting or half slip casting. The lower tip of stock cover is equipped with the impact and absorbs the board, and the impact absorbs board and stock cover and passes through the bolt-up, puts into the intermediate position of frame with the stock cover, the stock of anchor as an organic whole, and the one end of stock is fixed on roof 103. Optionally, a pressurizing screw rod and a hand wheel are arranged on the top plate 103, the hand wheel is connected with the pressurizing screw rod, the pressurizing screw rod is connected with the anchor rod sleeve, and the pressurizing screw rod can be driven to rotate by rotating the hand wheel, so that the anchor rod is reliably fixed on the top plate 103. The other end of the anchor rod naturally droops to form a free end, and the anchor rod is in a suspension state. The anchor rod sequentially passes through the hanging beam 140, the drop hammer 130 and the impact head 180 from top to bottom.

In the test, the drop weight 130 is located on the buffer plate 175, and the weight 131 with proper quality is installed in the containing frame 133, and the quality of the installed weight 131 is determined according to the specification model of the test rod. After the weight 131 and the accommodating frame 133 are fixed, the driving motor 151 is started to drive the winch 153 to rotate, the lifting rope 154 descends, and the lifting beam 140 descends to the upper side of the drop weight 130 along the first guide column 111 and the second guide column 113. The telescopic member 161 of the locking unit 160 is rotated to make the latch 168 connected to the rotating shaft 165 in a longitudinally arranged state first, so that the latch 168 enters the catch 135; after the latch 168 enters the retaining member 135, the telescopic element 161 moves to drive the swing rod 164 and the rotating shaft 165 to rotate, so that the latch 168 is in a horizontal arrangement state, and the latch 168 is clamped with the first extending portion 1361 and the second extending portion 1363. The driving motor 151 rotates in a reverse direction to drive the winding machine 153 to rotate, so that the lifting rope 154 pulls the lifting beam 140 and ascends, and the locking unit 160 is engaged with the drop hammer 130, thereby realizing the ascending of the drop hammer 130. The drop weight 130 rises to a predetermined height along the first guide post 111 and the second guide post 113. The preset height is an initial height of the drop hammer 130 when it falls, and the preset height is determined according to actual test conditions, and the higher the height is, the greater the impact energy generated after the drop hammer falls. Whether the buffer assembly 170 is fixed reliably is checked, when the impact absorption plate at the lower end of the anchor rod is impacted, the locking unit 160 needs to be separated from the drop hammer 130, at this time, the telescopic element 161 in the locking unit 160 moves to drive the swing rod 164 and the rotating shaft 165 to rotate, so that the fixture block 168 rotates from the transverse arrangement state to the longitudinal arrangement state, the fixture block 168 is separated from the gap between the first extension portion 1361 and the second extension portion 1363, the drop hammer 130 is released, and the drop hammer 130 drops along the first guide column 111 and the second guide column 113 to impact the impact absorption plate at the lower end of the anchor rod, so that axial tension is applied to the anchor rod. The hanging beam 140 stays at the initial position where the drop weight 130 drops by the hanging rope 154. The maximum impact force on the anchor rod can be obtained through the anchor rod sleeve, the drop hammer 130 and various sensors arranged on the main body frame 110. If the next test is needed, the drop hammer 130 is lifted to the preset height through the lifting assembly 150 and the hanging beam 140, the drop hammer 130 is released, and the steps are repeated.

To sum up, the embodiment of the utility model provides a drop hammer impact test device 100 has set up main body frame 110, lifting unit 150, buffer unit 170 and locking unit 160, and main body frame 110 adopts four stands 101, simple structure, and is reliable and stable, and is equipped with protection piece 115, strengthens joint strength, improves structural stability and bearing capacity, and the security is high. The lifting assembly 150 can raise the drop weight 130 to different drop heights, which can generate different impact energies. The locking unit 160 can rapidly release and fix the drop hammer 130, which is beneficial to improving the efficiency and safety of the impact test, and the locking unit 160 has simple structure, easy manufacture and reliable structure. The buffer assembly 170 includes a connection column 177, a pad 173, and a buffer plate 175, etc., and has a simple structure and good buffering and damping effects. The falling weight 130 moves up or down along the first guide post 111 and the second guide post 113, and stability is good. The drop hammer impact test device 100 is simple in structure, easy to operate, reusable, capable of adapting to impact tests of different test rods, scientific and reasonable in test result and high in precision.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.

Claims

1. A drop hammer impact test device is characterized by comprising a main body frame, and a drop hammer, a hanging beam, a lifting assembly and a buffering assembly which are arranged on the main body frame, wherein the lifting assembly is arranged at one end of the main body frame, the buffering assembly is arranged at the other end of the main body frame, and the drop hammer is movably arranged on the main body frame and is positioned between the lifting assembly and the buffering assembly;

2. The drop hammer impact test device of claim 1, wherein the locking unit comprises a drive assembly, a rotating shaft and a clamping block; the fixture block is fixed on the rotating shaft, and the driving assembly is connected with the rotating shaft and used for driving the rotating shaft to rotate so as to enable the fixture block to be selectively connected with the drop hammer.

3. The drop hammer impact test device according to claim 2, wherein the driving assembly comprises a telescopic element, a pull rod, a connecting rod and a swing rod, the swing rod is connected with the rotating shaft, the connecting rod is hinged with the swing rod, the pull rod is fixedly connected with the connecting rod, and the telescopic element is fixedly connected with the pull rod.

4. The drop hammer impact test device of claim 3, wherein one of the swing levers is connected to each of two ends of the connecting rod, and each of the swing levers is connected to one of the rotating shafts.

5. The drop hammer impact test device according to claim 2, wherein the fixture block is provided with a slip prevention portion for abutting against the drop hammer.

6. The drop hammer impact test device of claim 1, wherein the drop hammer comprises a housing rack and a weight, the weight being mounted on the housing rack; and a clamping groove is arranged on the containing frame and used for being selectively clamped with the locking unit.

7. The drop hammer impact test device of claim 1, wherein the body frame includes a plurality of guide bars, the drop hammer being coupled to the guide bars and slidable along the guide bars.

8. The drop hammer impact test device according to claim 7, wherein the main body frame is provided with a protection member, the protection member comprises a protection plate and a protection rod, one end of the protection rod is fixedly connected with the protection plate, and the other end of the protection rod is connected with the guide rod.

9. The drop hammer impact test device of claim 1, wherein the cushion assembly includes a pad disc and a cushion plate, the cushion plate being mounted on the pad disc, the pad disc being fixed within the body frame.

10. The drop hammer impact test device of claim 9, wherein the buffer assembly comprises a beam, a buffer column and a connecting column, the buffer column is mounted in the main body frame, the beam is arranged on the buffer column, one end of the connecting column is connected with the beam, and the other end of the connecting column is connected with the pad.