CN210665342U

CN210665342U - Bamboo is impact strength test equipment for combined material

Info

Publication number: CN210665342U
Application number: CN201921308344.3U
Authority: CN
Inventors: 叶柃; 顾孙强; 姚毅恒; 孙元平
Original assignee: Zhejiang Xinzhou Bamboo Based Composites Technology Co Ltd
Current assignee: Zhonglin Xinzhou Bamboo Winding Development Co ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-06-02
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses an impact strength test device for bamboo composite material, belonging to the technical field of bamboo composite material test, comprising a bracket, a chute, an impact assembly and a sample clamping tool box, wherein the sample clamping tool box can accurately realize the clamping of a sample, and the reliable fixation of the chute can be realized through the arrangement of a side stand column, an inclined support and a transverse rib and an inclined rib between the chutes in the bracket; and the matching work of the components such as the drop hammer, the unhooking device, the electric hoist and the like which are arranged corresponding to the sliding grooves is utilized, the lifting and dropping processes of the drop hammer can be quickly and accurately realized, and then the impact strength test of the bamboo composite material is accurately completed. The utility model discloses an impact strength test equipment, its simple structure, control is simple and convenient, and the sample clamping, the weight lifting that falls, the weight that falls drop the control accuracy of processes such as high, need not to set up extra supplementary sensing equipment and just can realize bamboo combined material's high accuracy impact strength test, and the operating stability of equipment, security are good, have better application prospect and spreading value.

Description

Bamboo is impact strength test equipment for combined material

Technical Field

The utility model belongs to the technical field of the bamboo combined material is experimental, concretely relates to impact strength test equipment for bamboo combined material.

Background

In recent years, bamboo composite materials are more and more widely used, and the types of bamboo composite material products are more and more. After the bamboo composite product is prepared, it is often necessary to perform related performance tests on the bamboo composite product, including an impact strength test on the bamboo composite.

In traditional impact strength test, the application is more the conventional drop hammer impact test, and it adopts the mode of artifical drop hammer to go on usually, all need hang the lifting hook with the weight manual work at every turn to promote the lifting hook to certain height after, make the weight do free fall motion and carry out impact test, then operating personnel picks up the weight, hangs again and carries out next impact test on the lifting hook, so relapse. The method not only needs a large amount of manual labor, but also has certain potential safety hazard, and has poor test accuracy and low working efficiency.

In view of this, researchers have improved the conventional impact strength testing apparatus, for example, a bootstrap impact strength testing apparatus and a testing method thereof disclosed in the prior patent CN105910924A, which includes a drop frame, a simulation head disposed in the drop frame, an acceleration sensor disposed on the simulation head, a light-operated switch disposed at the lower end of the drop frame, a partition plate disposed on the simulation head and on the same side as the light-operated switch, wherein the drop frame includes a guide rail for simulating the vertical drop of the head, an electromagnetic chuck mechanism connected to the top of the drop frame, a guide rail optical scale disposed on one side of the guide rail of the drop frame, a power supply mechanism for supplying power to the electromagnetic chuck mechanism, and a testing host. Through the matching work of the components, the automatic control of the impact strength test can be realized to a certain degree, and the test precision is improved; however, the above testing device still has obvious defects, and cannot fully meet the impact strength test of the bamboo composite material. The reason is as follows:

1. the testing device is complex in structure and complicated to control, the factors influencing the testing structure are excessive in the using process, once a certain part has a problem, the normal operation of the test is influenced, and the maintenance cost of the device is high;

2. the testing device adopts the electromagnet chuck to control the lifting of the simulation head, is usually suitable for products with smaller impact strength and lighter simulation heads, and if the simulation head is heavier or the required impact strength is larger, a high-power electromagnet chuck is required to be adopted, so that magnetic interference can be caused to related detection equipment to a certain extent, and the stability and the accuracy of the related detection equipment are influenced; moreover, even if a low-power electromagnet sucker is adopted, the stability of related detection equipment is still influenced by the magnetism of a repeated test;

3. the equipment stability of the testing device in practical application is poor, a workpiece to be tested is placed on the ground, the accuracy of workpiece setting cannot be effectively guaranteed, the risk of workpiece fragment splashing exists in the testing process, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

To more than prior art defect or improve in the demand one or more, the utility model provides a bamboo is impact strength test equipment for combined material can effectively be applicable to bamboo combined material's impact strength test, ensures the accuracy that sample clamping and drop hammer impact in the testing process, reduces splashing of sample, promotes impact strength test's accuracy, security and stability.

In order to achieve the purpose, the utility model provides an impact strength test device for bamboo composite material, which is characterized by comprising a bracket, a chute, an impact assembly and a sample clamping tool box;

the support comprises a bottom plate and a pair of side upright columns, the side upright columns are vertically arranged, the bottoms of the side upright columns are fixedly connected to the top surface of the bottom plate, and the two side upright columns are oppositely arranged;

the sliding groove is arranged between the two side upright posts, the bottom of the sliding groove is far away from the top surface of the bottom plate, and the sliding groove comprises two sliding groove units which are vertically arranged; the two chute units are respectively of a channel steel structure, the slotting sides of the two chute units are arranged oppositely, the back slot sides of the two chute units are respectively opposite to the side upright posts, transverse ribs are arranged between the chute units and the corresponding side upright posts, the transverse ribs are arranged at intervals in the vertical direction, and the two ends of each transverse rib are respectively connected with the side wall surfaces of the chute units and the side wall surfaces of the side upright posts;

the impact assembly comprises a drop hammer, an electric hoist and a detacher; the drop hammer is of a cylindrical structure, the bottom of the drop hammer is an impact head, the top of the drop hammer is provided with a hanger, and the two sides of the drop hammer are symmetrically provided with fin plates which can respectively extend into the chute units; one side of the fin plate is fixedly connected to the peripheral wall surface of the drop hammer, the other side of the fin plate extends outwards, and a first roller and a second roller are arranged on the side corresponding to the sliding groove unit; the first rollers are arranged on two sides of the fin plate in pairs, the axes of the first rollers are parallel to the plate surface of the fin plate, and the first rollers can move to enable the surfaces to correspondingly abut against the inner side wall surface of the sliding groove unit; the second roller is arranged at the end part of the fin plate, the axis of the second roller is vertical to the plate surface of the fin plate, and the walking surface of the second roller can be abutted against the inner bottom surface of the sliding groove unit; the unhooking device is arranged between the two sliding groove units and used for lifting and putting down the drop hammer, the top of the unhooking device is fixedly connected with a pull rope of the electric hoist, and the unhooking device can be driven by the pull rope to vertically lift under the traction of the electric hoist;

the sample clamping tool box is fixedly arranged on the bottom plate right below the sliding groove and is of a box body structure, fine sand is filled in the box body structure, and flanges for clamping samples, namely a lower flange and an upper flange which are vertically arranged oppositely, are arranged at the top of the box body in pairs; the two flanges are fixedly connected and hold the sample between the two flanges.

As a further improvement of the utility model, the two sides of the side upright post are respectively provided with an inclined support;

the inclined support is inclined at a certain angle, the bottom of the inclined support is fixedly connected to the bottom plate, the top of the inclined support extends upwards and is gradually close to the side stand columns, the inclined support is fixedly connected with the side stand columns through a plurality of transverse ribs, and the inclined support is correspondingly connected with the back groove side of the sliding groove through a plurality of inclined ribs.

As a further improvement, the drop hammer is the reducing cylinder structure, hold and the path end including the big footpath of vertical coaxial setting, big footpath end sets up the top of path end, the both sides that this big footpath was held are located to the fin branch, just the bottom that the path end was held sets up to the hemisphere.

As a further improvement of the present invention, both sides of the detacher correspond to the stopper provided to the chute unit.

As a further improvement of the present invention, the first rollers are arranged on the fin plate in a plurality of pairs at intervals along the vertical direction; and/or the second rollers are arranged on the fin plate at intervals along the vertical direction.

As a further improvement of the utility model, the electric hoist sets up on the side column of support one side, the cable pulls through a plurality of fixed pulleys the top of spout.

As a further improvement, the equal-height sides of the bottom of the sliding groove are provided with a plurality of speed measuring laser instruments.

The above-described improved technical features may be combined with each other as long as they do not conflict with each other.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:

(1) the utility model discloses an impact strength test equipment for bamboo combined material, it is through setting up the spout that comprises two spout units, has realized the accurate direction in the drop hammer dropping process, and through the corresponding setting of sample centre gripping frock, has realized the clamping of sample accurately, has ensured the accurate effect of drop hammer and sample, has promoted the accuracy of impact strength test; meanwhile, the absorption of impact kinetic energy in the impact process is effectively realized through the filling of fine sand in the sample clamping tool box, the equipment damage caused by frequent and large-amplitude vibration of the equipment is avoided, the splashing of the sample during testing is reduced, and the stability and the safety of the testing equipment are improved;

(2) the utility model discloses an impact strength test equipment for bamboo combined material, it is through setting up the supporting structure who comprises side stand, bearing diagonal, horizontal muscle and diagonal muscle, correspond fixed, support the spout by the support, effectively realized the reliable, stable support of spout, satisfied the setting characteristics that drop weight is big, the stroke is high, ensured the safe in utilization of equipment in the test process, guaranteed the security and the stability of test equipment;

(3) the utility model discloses an impact strength test equipment for bamboo combined material, it is through the setting of drop hammer, electric hoist and detacher in the impact assembly, make the drop hammer easily realize vertical lifting and put down, the setting of electric hoist is simple, control is simple and convenient, can not produce the influence to other parts in the equipment, ensure the accuracy in the test process, and through the corresponding matching of drop hammer and spout, and the setting of first gyro wheel and second gyro wheel on the drop hammer, effectively guaranteed the accuracy that the drop hammer dropped, ensured the accuracy of impact strength test result;

(4) the utility model discloses an impact strength test equipment for bamboo combined material, its simple structure, control is simple and convenient, and the sample clamping, the weight lifting that falls, the weight that falls drop the control accuracy of process such as drop are high, need not to set up extra auxiliary sensing equipment and just can realize bamboo combined material's high accuracy impact strength test, and the operating stability of equipment, security are good, have better application prospect and spreading value.

Drawings

FIG. 1 is a schematic perspective view of an impact strength testing apparatus for bamboo composite materials in an embodiment of the present invention;

FIG. 2 is a schematic diagram of the core components of an impact assembly in an embodiment of the invention;

FIG. 3 is a flow chart of an embodiment of the present invention for testing with an impact strength testing apparatus using bamboo composite materials;

in all the figures, the same reference numerals denote the same features, in particular: 1. the support comprises a support, 101, a bottom plate, 102, side upright posts, 103, inclined supports, 104, transverse ribs and 105, inclined ribs; 2. the device comprises a sliding chute, a 3-impact assembly, a 301-drop hammer, a 302-roller group, a 303-position limiter, a 304-electric hoist, a 305-inhaul cable, a 306-fixed pulley, a 307-detacher, a 308-hanger and a 309-fin plate; 4. and (5) clamping the sample into a box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

The utility model discloses bamboo for combined material impact strength test equipment in preferred embodiment is shown in fig. 1, 2, including support 1, spout 2, impact assembly 3 and sample centre gripping frock case 4. The sliding chute 2 is vertically arranged and correspondingly supported by the bracket 1, and the bracket 1 can be firmly fixed on the ground, so that the stability of the sliding chute 2 after being arranged is ensured; meanwhile, the bottom of the sliding chute 2 is far away from the bottom surface after the sliding chute 2 is arranged, and the sample clamping tool box 4 is arranged below the bottom of the sliding chute 2 and used for fixing a product or a material to be tested; the impact assembly 3 is disposed in the chute 2, and includes a drop hammer 301 that can reciprocate vertically, and can perform an impact test on a workpiece held in the sample holding tool box 4.

Specifically, the support 1 in the preferred embodiment includes a bottom plate 101 disposed horizontally, which can be stably connected to the bottom surface by an anchor bolt, so as to fix the support 1, two side vertical pillars 102 are respectively disposed on the top plate of the bottom plate 101, the two side vertical pillars 102 are respectively disposed vertically, and the two side vertical pillars 102 are opposite to each other. Preferably, the bottom plate 101 is a rectangular steel plate, the side columns 102 are respectively disposed in the middle of two sides of the top surface of the bottom plate 101, and the bottoms of the side columns 102 are fixedly connected with the bottom plate 101.

Furthermore, the two sides of the side upright posts 102 are respectively provided with an inclined support 103, which is in the shape of a round bar, the inclined support 103 is arranged on the bottom plate 101 at a certain angle, the bottom of the inclined support is fixedly connected with the bottom plate 101, and the distance between the inclined support 103 and the side upright posts 102 decreases from bottom to top in sequence, as shown in fig. 1; correspondingly, a plurality of transverse ribs 104 are arranged between the inclined strut 103 and the side upright post 102 at intervals, each transverse rib 104 is horizontally arranged, and two ends of each transverse rib are respectively connected with the rod body of the inclined strut 103 and the side wall surface of the side upright post 102. Through the matching arrangement of the inclined supports 103 and the transverse ribs 104, the side upright posts 102 can be stably supported on the bottom plate 101, and the test result misalignment caused by the shaking of the side upright posts 102 in the test process is prevented. Further preferably, the bottoms of the four diagonal braces 103 are respectively disposed at the four corners of the bottom plate 101.

Further, spout 2 is along vertical setting, and it sets up between both sides stand 102, through a plurality of horizontal muscle 104 fixed connection that set up in vertical interval between side stand 102 and the spout 2, then through the setting of spout 2 just to horizontal muscle 104 on the side wall face of both sides stand 102 for spout 2 can stably set up between both sides stand 102. Preferably, between each inclined strut 103 and the chute 2, an inclined rib 105 is provided, which is preferably horizontally disposed and connects the side wall surface of the chute 2 and the side wall surface of the inclined strut 103 at both ends, respectively. By means of the side uprights 102, the diagonal braces 103, the transverse ribs 104 and the diagonal ribs 105, a support structure as shown in fig. 1 can be built up, providing a stable support for the runner 2.

Further, the bottom of the chute 2 in the preferred embodiment is far away from the top surface of the bottom plate 101, and includes two chute units which are arranged opposite to each other, the two chute units are respectively in a "channel steel" structure, and the slotted sides of the two chute units are opposite to each other, and form a guide rail for the falling hammer 301 to run vertically, so as to guide the vertical reciprocating motion of the falling hammer 301. Accordingly, the side of the gate unit facing away from the slot (i.e., the back slot side) is fixedly connected to the side posts 102 by the transverse ribs 104.

Further, the impact assembly 3 in the preferred embodiment includes a drop hammer 301, a roller set 302, an electric block 304, a cable 305, a detacher 307, and a hanger 308, as shown in fig. 2. The drop hammer 301 is of a reducing cylindrical structure and comprises a large-diameter end and a small-diameter end which are coaxially arranged, the small-diameter end is arranged at the bottom of the large-diameter end, and the bottom of the small-diameter end is of a hemispherical structure; correspondingly, the top of the large-diameter end is provided with a hanger 308 for matching with the detacher 307 to realize the hanging of the drop hammer 301.

Further, fin plates 309 are symmetrically arranged on two sides of the large-diameter end, the fin plates are vertically arranged, the plate surfaces of the fin plates are preferably arranged along the radial direction of the large-diameter end, one side of each fin plate 309 is fixedly connected to the peripheral wall surface of the large-diameter end, the other side of each fin plate extends outwards, and a roller set 302 is arranged on the side, extending outwards, of each fin plate 309, each roller set 302 in the preferred embodiment comprises two first rollers which are respectively arranged on two sides of each fin plate 309, and the axes of the two first rollers are parallel to the plate surfaces of the fin plates 309; preferably, the roller sets 302 on the fin 309 are provided in plurality at intervals in the vertical direction, such as two as shown in fig. 2. When the drop hammer 301 is disposed in the chute 2, the fins 309 on both sides of the drop hammer 301 extend into the chute unit, and the two first rollers of the roller set 302 abut against the inner wall surfaces on both sides of the chute unit, respectively, so as to guide the vertical movement of the drop hammer 301.

Further, it is preferable that a second roller is disposed on the fin plate 309 corresponding to an inner wall surface of the groove bottom of the sliding groove unit, an axis of the second roller is perpendicular to the plate surface of the fin plate 309, and one side of the second roller extends outward and abuts against the groove bottom of the sliding groove unit, so that the roller set 302 does not contact with the groove bottom, and the first roller and the second roller roll independently. Preferably, the second rollers on fin 309 are a plurality of rollers spaced vertically apart, such as two rollers as shown in fig. 2 in the preferred embodiment.

Further, a detacher 307 is arranged above the drop hammer 301, as shown in fig. 2, and can be correspondingly hung on the hanger 308, so as to drive the hanger to perform vertical reciprocating motion; accordingly, stoppers 303 are respectively disposed on both sides of the detacher 307, so that when the detacher 307 is matched with the drop hammer 301, the stoppers 303 can respectively extend into the two chute units of the chute 2, thereby preventing the detacher 307 from swinging or shifting, and ensuring stability and accuracy when the drop hammer 301 is hung.

Further, a lifting component is arranged corresponding to the detacher 307, which is the electric hoist 304 in the preferred embodiment, the cable 305 of the electric hoist 304 is correspondingly connected to the detacher 307, and one end of the cable 305 connected with the detacher 307 is vertically arranged, and then the cable 305 is retracted and placed by the electric hoist 304, so that the driving of the vertical lifting of the detacher 307 can be realized. Specifically, the electric hoist 304 in the preferred embodiment is fixedly disposed at one side of the bracket 1, and its pulling rope 305 is pulled to the detacher 307 through a plurality of fixed pulleys 306.

Further, a sample clamping tool box 4 is arranged right below the bottom of the sliding chute 2, preferably formed by combining a rectangular square pipe and a bottom steel plate, the rectangular square pipe is used as an internal support, the bottom steel plate is fixedly connected with the bottom plate 101, the four sides of the rectangular square pipe are surrounded by vertical face steel plates, and a plurality of reinforcing rib plates are arranged on the outer sides of the steel plates; further, the sample clamping tool box 4 is filled with fine sand, the top of the sample clamping tool box is vertically provided with two flanges, namely an upper flange and a lower flange, the lower flange is fixedly arranged at the top of the sample clamping tool box 4, the lower flange and the upper flange can be correspondingly connected through a vertical bolt, and a workpiece/material to be detected is clamped between the two flanges. Through the setting, the workpiece to be detected can be fixedly clamped by the two flanges, and the fine sand additionally arranged inside the sample clamping tool box 4 can be used for absorbing impact kinetic energy, so that the sample is effectively prevented from splashing to hurt people or influence the equipment during testing.

Further, in order to test the speed of impacting the sample when the drop hammer falls down, a plurality of speed measuring laser instruments, in the preferred embodiment, 3 sets of speed measuring laser instruments are arranged on the same height side of the bottom of the sliding groove 2 along the horizontal ring direction.

The utility model provides an impact strength test equipment for bamboo combined material, the impact strength test process who carries out the bamboo combined material sample after its equipment is accomplished as follows:

s1: clamping a sample to be detected on the top of the sample clamping tool box 4 by two flanges;

s2: the drop hammer 301 is hung below the unhooking device 307, the electric hoist 304 is controlled to drive the inhaul cable 305 to move, and then the drop hammer 301 is lifted to a preset height position;

s3: a corresponding unhooking command is sent to the unhooking device 307, so that the hanging of the hanger 308 is released, and then the drop hammer 301 begins to drop;

s4: the speed of the drop hammer 301 reaching the bottom of the chute 2 is detected by a speed measuring laser to obtain the average value v of the speed.

Note that the acceleration of gravity is g, and the impact area of contact of the sample that awaits measuring is S, and the sample that awaits measuring is H to the distance at 2 tops of spout, and then the impact strength E that the sample that awaits measuring bore this moment is:

the utility model provides an impact strength test equipment for bamboo combined material, its simple structure, it is easy and simple to handle, need not to set up a large amount of auxiliary sensing equipment, through the corresponding matching of combination formula support and spout, can fully guarantee stability and the security of equipment in the test process, prevent the skew of drop hammer in the process of dropping, promote the accuracy of impact test, satisfy the high accuracy requirement of impact test; simultaneously, through the corresponding setting of sample centre gripping frock case, not only can effectively promote the accuracy of sample clamping, can also effectively absorb the impact kinetic energy in the test process, reduce splashing of sample and hinder people and to the influence of equipment.

In short, the utility model provides an impact strength test equipment, its simple structure, control is simple and convenient, and the sample clamping, the control accuracy of process such as drop hammer drop are high, and the operating stability of equipment, security are good, can effectively promote sample impact strength test's accuracy and security, have better application prospect and spreading value.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. An impact strength test device for bamboo composite materials is characterized by comprising a bracket, a sliding chute, an impact assembly and a sample clamping tool box;

2. The bamboo composite impact strength test equipment according to claim 1, wherein the two sides of the side columns are respectively provided with an inclined support;

3. The bamboo composite impact strength test equipment according to claim 2, wherein the drop hammer is of a reducing cylinder structure and comprises a large-diameter end and a small-diameter end which are vertically and coaxially arranged, the large-diameter end is arranged above the small-diameter end, the fin plates are respectively arranged on two sides of the large-diameter end, and the bottom of the small-diameter end is hemispherical.

4. The bamboo composite impact strength test equipment according to any one of claims 1 to 3, wherein stoppers are provided on both sides of the detacher corresponding to the chute units, respectively.

5. The bamboo composite impact strength test equipment according to any one of claims 1 to 3, wherein the first rollers are arranged on the fin plate in a plurality of pairs at intervals in the vertical direction; and/or the second rollers are arranged on the fin plate at intervals along the vertical direction.

6. The bamboo composite impact strength test equipment according to any one of claims 1 to 3, wherein the electric hoist is arranged on a side column on one side of the bracket, and the pulling cable is pulled to the top of the sliding groove through a plurality of fixed pulleys.

7. The bamboo composite impact strength test equipment according to any one of claims 1 to 3, wherein a plurality of velocimetry lasers are arranged on the equal height sides of the bottom of the sliding groove.