CN214334189U - Device for impact test of sundry box - Google Patents

Abstract

The utility model provides a device for debris box impact test, including frame and the upset mesa of connection in the frame, a side of frame and upset mesa be connected through link mechanism, constitute rocker slider mechanism. The pull rod mechanism comprises a screw rod and a stepping motor for driving the screw rod to stretch, the screw rod has self-locking capacity, one end of the screw rod is connected with the overturning table board through a fisheye bearing, a nut at the other end of the screw rod is dragged to rotate through the stepping motor synchronously, and the screw rod does not rotate, so that the screw rod can stretch out and retract to drive the overturning table board to overturn. The device simple structure, processing is simple and convenient, and the cost is lower, and the device is convenient for operate in the testing process, and whole small light in weight is convenient for remove, and step motor's that adopts power is very little, adopts the lead screw that has the auto-lock ability, has guaranteed can not take place unexpected upset under the power-off state.

Description

Device for impact test of sundry box

Technical Field

The utility model belongs to the automobile parts testing arrangement field relates to a testing arrangement for debris box.

Background

With the increasing progress of the automobile test standards, strict durability tests are required to be performed on various parts on the automobile, and the motion state of the real automobile needs to be simulated as truly as possible.

Aiming at the sundry box of the truck, the impact of a heavy object in the sundry box on the sundry box when the head of the truck turns over needs to be simulated for testing, and the balance weight in the sundry box can reach 30kg in the turning impact test process. The utility model discloses an authorization notice number is CN 210475384U's utility model patent provides a turning device, what adopt is cylinder turning device, including parts such as first connecting plate, first cylinder, first connecting block, first connecting axle and supporting shoe, traditional upset test bench also has the cylinder of adoption as the power supply, though the light in weight of cylinder, but the speed and the angle of the unable accurate control upset, if the sample still has the counter weight of heavy weight in the testing process, the reliability of cylinder can greatly reduced. The overturning test bed also adopts an electric cylinder as a power source, the stability of the electric cylinder is strong, but the volume and the mass are large, and when a sample needs to be tested under standard environment conditions, the whole test bed is not convenient to move into an environment box.

SUMMERY OF THE UTILITY MODEL

For solving the problem in the background art, the utility model provides a device for debris box impact test.

The technical scheme of the utility model as follows: a device for impact test of a sundries box comprises a rack and an overturning table top connected to the rack, wherein the rack is connected with the overturning table top through a pull rod mechanism; the pull rod mechanism comprises a screw rod and a stepping motor for driving the screw rod to stretch, one end of the screw rod is connected with one side surface of the turnover table board through a fisheye bearing, and the other end of the screw rod is connected with the stepping motor; the stepping motor is connected with a first bearing at the upper part of the frame, thereby forming a rocker-slider mechanism.

A cross bracket is fixed at the lower part of the turnover table top, one end of one bracket of the cross bracket is matched with the fisheye bearing, and the two ends of the other bracket of the cross bracket are matched with the second bearings at the two sides of the frame.

The rack comprises a base, a first supporting frame and a second supporting frame, wherein the first supporting frame and the second supporting frame are perpendicular to the base; the first bearing is arranged on the first support frame; the second bearing is arranged on the second support frame. The bottom surface of one end of the other support of the cross support is provided with an extended L-shaped limiting sheet, the outer side of the first support is provided with a travel switch, and the travel switch is provided with a limiting block matched with the L-shaped limiting sheet.

The overturning table board is provided with a fixing column and an upper cover which simulate the actual installation state of the sundries box.

The other end of the screw rod is provided with a nut which is matched with the stepping motor through a synchronous belt. The gravity center of the turnover table top is far away from the pull rod mechanism, so that the connected screw rod is always under the action of tension. The screw rod comprises a single-wire screw rod with self-locking capability.

Compared with the prior art, the technical scheme of the utility model, the pull rod mechanism volume of the device that provides is very little, and nut on the lead screw passes through step motor via the hold-in range and drags the rotation, and the lead screw is not changeed the nut rotation, and consequently the lead screw will stretch out and retract, drives the upset mesa upset, and the corner through step motor control nut just can the accurate control upset angle and the speed of upset mesa. In addition, the outer side of the overturning table top is also provided with a travel switch and a limiting device, so that the overturning angle is more controllable and cannot exceed the travel. An upper cover for preventing the counter weight in the sundries box sample from turning out when the sample is turned over at a large angle is also arranged on the turning table board. The turnover table board is in the whole motion process, and the lead screw of the pull rod mechanism only receives the pulling force effect, so that the problem of lead screw instability does not exist, and only the lead screw needs to be considered during design to meet the requirement of tensile strength, thereby greatly reducing the diameter of the lead screw, reducing the whole weight of the mechanism and improving the stability. The screw rod that adopts has the auto-lock ability, can make debris box sample and counter weight avoid toppling when the motor loses power. The device is small in overall size and convenient to move into the environmental box to test the sundries box.

The device provided by the utility model simple structure, processing is simple and convenient, and the cost is lower, and the device is convenient for operate in the testing process, and whole small light in weight is convenient for remove, and the step motor's that adopts power is very little, adopts the lead screw that has the auto-lock ability, has guaranteed can not take place unexpected upset under the power-off state.

Drawings

FIG. 1 is a schematic view I of the apparatus in a flat state.

FIG. 2 is a schematic view II of the apparatus in a flat state.

Fig. 3 is a schematic view of the apparatus in a flat state without the upper cover.

Fig. 4 is a schematic diagram I of the device in a flipped-up state.

Fig. 5 is a schematic view II of the apparatus in a flipped-up state.

Fig. 6 is a partial schematic view I of the apparatus.

Fig. 7 is a partial schematic view II of the apparatus.

Fig. 8 is a schematic view of the pull rod mechanism of the device.

Wherein: 1-a frame; 1.1-base; 1.2-a second support bar; 1.3-a first support bar; 1.4-a first bearing; 1.5-a second bearing; 1.6-travel switch; 1.7-a limiting block; 2-turning over mechanism; 2.1-cross stand; 2.2-L-shaped limiting sheets; 2.3-fisheye bearing; 2.4-fixed column; 3-a pull rod mechanism; 3.1-lead screw; 3.2-step motor; 3.3-nut; 3.4-synchronous belt; 4-upper cover.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific 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. The positional relationships described in the embodiments are all in accordance with those shown in the drawings.

The device for impact testing of the sundries box as shown in figure 1 is composed of a frame 1, a turnover mechanism 2, a pull rod mechanism 3 and an upper cover 4.

As shown in fig. 1 to 5, the bottom of the rack 1 is a square base 1.1, two sides of the base 1 are respectively and vertically provided with a second support bar 1.2, and the other side is vertically provided with a first support bar 1.3; the first supporting rod 1.3 is provided with a first bearing 1.4, and the second supporting rod 1.2 is provided with a second bearing 1.5. The bottom of the overturning table top 2 is fixed with a cross support 2.1, two ends of one support of the cross support 2.1 are matched with a second bearing 1.5, one end of the other support of the cross support 2.1 is connected with a fisheye bearing 2.3, the fisheye bearing 2.3 is matched with one end of a screw rod 3.1 of a pull rod mechanism 3, the other end of the screw rod 3.1 is matched with a stepping motor 3.2, the stepping motor 3.2 is connected with a first bearing 1.4, and the concrete figure is 6. Therefore, when the stepping motor 3.2 is started, the screw rod 3.1 can extend or shorten under the driving of the stepping motor 3.2, at the moment, the stepping motor 3.2 can rotate around the first bearing 1.4, and the whole overturning table top 2 can rotate around the second bearing 1.5 through the extension or contraction of the connected screw rod 3.1.

As shown in fig. 3, a plurality of fixing columns 2.4 are installed on the upper portion of the overturning table top 2, the sundries box can be fixed on the fixing columns 2.4 through screws, an upper cover 4 is further arranged on the upper portion of the overturning table top 2, the top surface of the upper cover 4 is attached to the end portion of the sundries box, two side faces of the upper cover 4 are buckled on the side face of the overturning table top 2, the fixing columns 2.4 and the upper cover 4 can be fixed on the side face of the overturning table top 2 through screws, and the actual installation state of the sundries box can be simulated through the fixing columns 2.4 and the upper cover 4.

As shown in fig. 4 and 6, the outer side of the first supporting rod 1.3 is further provided with a travel switch 1.6, the travel switch 1.6 is provided with two limiting blocks 1.7, the bottom of one end of the corresponding cross bracket 2.1 is provided with an extended L-shaped limiting piece 2.2, and the L-shaped limiting piece 2.2 is matched with the two limiting blocks 1.7, namely, the turning limit position of the turning table top 2 is limited.

Specifically, as shown in fig. 8, the screw rod 3.1 is connected with a nut 3.3, the nut 3.3 is dragged to rotate by a stepping motor 3.2 via a synchronous belt 3.4, the screw rod 3.1 is fixed, the nut 3.3 rotates, and the screw rod 3.1 can extend or shorten.

In addition, the gravity center of the turnover table top 2 is far away from the pull rod mechanism 3, the connected screw rod 3.1 is always pulled under each state, so that the problem that the screw rod 3.1 is unstable does not exist, only the screw rod 3.1 can meet the requirement of tensile strength during design, and the diameter of the screw rod 3.1 is greatly reduced, so that the most common M8 single-wire screw rod is adopted, the adopted screw rod also has self-locking capability, and when the stepping motor 3.2 loses power, the user also needs to worry about the overturning of the sundry box sample and the balance weight inside the sundry box sample.

The device is used for testing impact test of the sundries box: firstly, the overturning table top 2 of the device is in a flat state; then loosening the fixing screw of the upper cover 4, and taking down the upper cover 4; then, a sundry box is installed, and the bottom surface of the sundry box is fixedly installed on a fixing column 2.4 through a screw; then, balancing weight in the sundries box according to the test requirement; then the upper cover 4 is installed; and finally, adjusting the temperature and the humidity of the environment box according to the test requirements, moving the whole device into the environment box, and controlling the turning angle of the nut 3.3 through the stepping motor 3.2 to accurately control the turning angle and the turning speed of the turning table board 2 to start the test.

The foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments thereof. As long as the utility model discloses a method design and technical scheme carry out various improvements, or do not improve and directly be applied to other occasions, all be within the scope of protection of the utility model.

Claims (8)

1. The utility model provides a device for debris box impact test, includes frame (1) and upset mesa (2) of connection on frame (1), its characterized in that: one side surfaces of the rack (1) and the turnover table top (2) are connected with each other through a pull rod mechanism (3); the pull rod mechanism (3) comprises a screw rod (3.1) and a stepping motor (3.2) for driving the screw rod (3.1) to stretch; one end of the screw rod (3.1) is connected with one side surface of the turnover table top (2) through a fisheye bearing (2.3), and the other end of the screw rod (3.1) is connected with the stepping motor (3.2); the stepping motor (3.2) is connected with a first bearing (1.4) on the frame (1) so as to form a rocker-slider mechanism.

2. An apparatus for use in a glove box impact test according to claim 1, further comprising: a cross bracket (2.1) is fixed at the lower part of the turnover table top (2), one end of one bracket of the cross bracket (2.1) is matched with the fisheye bearing (2.3), and two ends of the other bracket of the cross bracket (2.1) are matched with second bearings (1.5) at two sides of the frame (1).

3. An apparatus for use in a glove box impact test according to claim 2, wherein: the rack (1) comprises a base (1.1), a first supporting frame (1.3) and a second supporting frame (1.2), wherein the first supporting frame (1.3) and the second supporting frame (1.2) are vertical to the base (1.1); the first bearing (1.4) is arranged on the first support frame (1.3); the second bearing (1.5) is arranged on the second support frame (1.2).

4. An apparatus for use in a glove box impact test according to claim 3, wherein: the bottom surface of one end of the other support of the cross support (2.1) is provided with an extended L-shaped limiting sheet (2.2), the outer side of the first support frame (1.3) is provided with a travel switch (1.6), and the travel switch (1.6) is provided with a limiting block (1.7) matched with the L-shaped limiting sheet (2.2).

5. An apparatus for use in a glove box impact test according to claim 1, further comprising: the overturning table board (2) is provided with a fixing column (2.4) and an upper cover (4) which simulate the actual installation state of the sundries box.

6. An apparatus for use in a glove box impact test according to claim 1, further comprising: the other end of the screw rod (3.1) is provided with a nut (3.3), and the nut (3.3) is matched with the stepping motor (3.2) through a synchronous belt (3.4).

7. An apparatus for use in a glove box impact test according to claim 1, further comprising: the gravity center of the turnover table top (2) is far away from the pull rod mechanism (3), so that the connected screw rod (3.1) is always under the action of tension.

8. An apparatus for use in a glove box impact test according to claim 7, wherein: the screw rod (3.1) comprises a single-wire screw rod with self-locking capability.

Images