CN209230908U - A kind of balance weight impact testing machine Special calibration device - Google Patents

Abstract

The utility model relates to the technical fields of pendulum impact test, more specifically, it is related to a kind of balance weight impact testing machine Special calibration device, including slide calliper rule and bracket, the slide calliper rule include slide calliper rule ontology and the first locating piece, first locating piece is arranged on the fixation card base of slide calliper rule ontology, for positioning the axle center of oscillating weight axle；The bracket includes pedestal, pressure measurement and the second locating piece, and pressure measurement is arranged on the base, and the second locating piece is arranged on pressure measurement, and the second locating piece is used for the position with the movable card base of slide calliper rule ontology cooperation position-finding power F.The bracket of the utility model can support pendulum, pendulum is set to keep horizontality, the result that pressure measurement measures is to measure the value of power F, first locating piece and the second locating piece can make the fixation card base of slide calliper rule ontology and movable card base navigate to the axle center of oscillating weight axle and the position of measurement power F respectively, it can the distance of position of the axle center of accurate measurement oscillating weight axle to measurement power F.

Description

A special verification device for pendulum impact testing machine

technical field

The utility model relates to the technical field of a pendulum impact test, in particular to a special verification device for a pendulum impact tester.

Background technique

The pendulum impact testing machine has various types of pendulums according to different impact energies. Different pendulums have different pendulum weights and pendulum lengths. The pendulum impact test needs to measure the vertical downward measurement of the pendulum when it is in a horizontal position. Force F and the distance from the point of application of force F to the center of the pendulum shaft. At present, the verification methods of the pendulum impact testing machine include direct verification method and indirect verification method. In the direct verification method, when measuring the distance from the point of action of the force F to the axis center of the pendulum shaft, since there is no special caliper, usually Use a steel ruler to measure, but the steel ruler cannot meet the requirements of the measurement regulations, and when using a steel ruler to measure, the position of the action point of the force F and the axis position of the pendulum shaft are all judged by personal experience, so There will be human error, resulting in low accuracy of the measured data. It is also very inconvenient to adjust the pendulum to the horizontal position in the current direct verification method. The verification personnel can only use local materials when measuring on-site, and temporarily find other objects to support the pendulum so that it is in a horizontal position, but this is not only troublesome, but also Moreover, there are still large errors, and the detection process is relatively long, especially when encountering a pendulum above 300J, it needs the cooperation of multiple people to complete.

Utility model content

In order to overcome at least one defect described in the above-mentioned prior art, the utility model provides a device capable of accurately measuring the distance from the point of action of the measuring force F to the center of the pendulum shaft. The specific technical scheme is as follows:

A special verification device for a pendulum impact testing machine, including a caliper and a bracket. The caliper includes a caliper body and a first positioning piece. Heart; the bracket includes a base, a pressure measuring piece and a second positioning piece, the pressure measuring piece is arranged on the base, the second positioning piece is arranged on the pressure measuring piece, and the second positioning piece is used for the movable card with the caliper body The point of application of the force F is determined with the positioning of the foot.

The caliper body of the utility model is a general-purpose vernier caliper, including a vernier, fixed feet and movable feet. The function of the pressure measuring part of the utility model can be realized by a pressure gauge, a gravity sensor, etc., and can measure the value of the measuring force F. The utility model selects an electronic pressure gauge, which can display the measured value in real time. The bracket of the utility model can support the pendulum to keep the pendulum in a horizontal state. At this time, the result measured by the pressure measuring part is the value of the measuring force F, and the caliper body can be fixed by the first positioning part and the second positioning part. The clamping foot and the movable clamping foot are respectively positioned on the axis of the pendulum shaft and the action point of the measuring force F, that is, the distance from the axis of the pendulum shaft to the acting point of the measuring force F can be accurately measured.

Preferably, the first positioning member includes a clamping plate, and the clamping plate is arranged on a fixed clamping foot of the caliper body. The clamping plate in the utility model can clamp the pendulum shaft at the measurement position of the first positioning member, so as to achieve the functions of positioning the pendulum shaft and determining the axis center of the pendulum shaft.

Preferably, the clamping plate has a V-shaped structure, and the central plane of the clamping plate is the same plane as the measuring surface of the fixed clamping foot of the caliper body. The clamping plate with V-shaped structure in the utility model can clamp the pendulum shaft in the middle part of the V-shaped structure of the guide plate. When the pendulum shaft is clamped in the clamping plate, the axis center of the pendulum shaft will be at the fixed clamping foot of the caliper body The measuring surface of the caliper, that is, the position where the clamping plate is clamped is the measuring point of the fixed foot of the caliper body, so as to achieve the function of determining the axis of the pendulum shaft. According to needs, the clamping plate can be arranged in a structure such as channel steel, but it is better to be set in a V-shaped structure. Facing pendulum shafts with different diameters, the clamping plate with a V-shaped structure can find the axis of the pendulum shaft.

Preferably, the first positioning member is detachably connected to the fixing feet of the caliper body. Further, the first positioning member further includes a connecting plate, the clamping plate is arranged on the connecting plate, and the connecting plate is screwed to the fixed clamping feet of the caliper body. The first positioning part of the utility model can be disassembled, which is convenient for later maintenance and replacement.

Preferably, the second positioning member is a positioning rod, one end of the positioning rod is provided with a positioning groove, and the other end is connected to the pressure measuring member. When the utility model works, the positioning rod is placed in the impact knife edge of the pendulum to support the pendulum. When the pendulum is in a horizontal state, the result measured by the pressure measuring part is the value of the measuring force F, and the positioning rod is in contact with the pendulum. The position of the caliper body is the action point of the measuring force F. By setting a positioning groove at the end of the positioning rod, the movable feet of the caliper body can enter the positioning groove, so that the movable feet of the caliper body are at the acting point of the measuring force F. Thereby, the function of accurately finding the action point of the measuring force F is achieved.

Preferably, the positioning groove is a V-shaped groove. In the utility model, the V-shaped groove matches the shape of the movable clamping foot of the caliper body, so that the movable clamping foot can accurately find the action point of the measuring force F.

Preferably, the bracket further includes a movable rod, the movable rod is arranged between the pressure measuring element and the base, and the movable rod is movably connected with the base. The utility model can be adapted to pendulums with different pendulum lengths after the movable rod is arranged, and for pendulums with different pendulum lengths, the height of the bracket can be adjusted by adjusting the movable rod, so that the pendulum is in a horizontal position.

Preferably, the movable rod is screwed to the base. The utility model can adjust the height of the bracket by rotating the movable rod, the operation is simple and convenient, and the movable rods of different lengths can be replaced as required.

Compared with the prior art, the beneficial effect is:

The utility model is provided with two positioning parts, the first positioning part can make the fixed clamping foot of the caliper of the utility model find the position of the axis of the pendulum shaft accurately, and the second positioning part can make the movable clamping foot of the caliper accurately find the measuring force F The position of the action point, so that the distance from the center of the pendulum shaft to the action point of the measuring force F can be accurately measured, the error caused by visual judgment can be eliminated, and the value of the measuring force F can be measured at the same time, which improves the measurement accuracy and measurement efficiency; The height of the support of the utility model can be adjusted, and the movable rod can be replaced, so that the utility model can be applied to pendulums with different pendulum lengths.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic structural view of the utility model caliper.

Fig. 3 is a schematic diagram of the mechanism of the bracket of the present invention.

Fig. 4 is a schematic diagram of the use state of the utility model.

In the figure: 1-caliper; 2-bracket; 3-pendulum impact testing machine; 4-pendulum; 5-pendulum shaft; 11-caliper body; 1-positioning piece; 21-base; 22-pressure measuring piece; 23-second positioning piece; 24-moving rod;

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

Example 1

As shown in Figures 1-4, a special verification device for a pendulum impact testing machine includes a caliper 1 and a bracket 2. The caliper 1 includes a caliper body 11 and a first positioning member 14. The first positioning member 14 is arranged on the caliper body 11. On the fixed clamp foot 12, it is used to locate the axis of the pendulum shaft; the bracket 2 includes a base 21, a pressure measuring piece 22 and a second positioning piece 23, and the pressure measuring piece 22 is arranged on the base 21, and the second positioning piece 23 Arranged on the pressure measuring member 22 , the second positioning member 23 is used to cooperate with the movable clamping foot 13 of the caliper body 11 to locate the action point of the measuring force F.

Specifically, the first positioning member 14 includes a clamping plate 141 and a connecting plate 142 . The clamping plate 141 has a V-shaped structure, and the central plane of the clamping plate 141 is the same plane as the measuring surface of the fixed clamping foot 12 of the caliper body 11 . The clamping plate 141 is disposed on the connecting plate 142 , and the connecting plate 142 is screwed to the fixed clamping foot 12 of the caliper body 11 .

Specifically, the second positioning member 23 is a positioning rod, one end of the positioning rod is provided with a positioning groove 231 , and the other end is connected to the pressure measuring member 22 . Specifically, the positioning groove 231 is a V-shaped groove matching the shape of the movable clamping foot 13 of the caliper body 11 .

Specifically, the bracket 2 further includes a movable rod 24 , which is arranged between the pressure measuring member 22 and the base 21 , and the movable rod 24 is screwed to the base 21 .

Specifically, the pressure measuring element 22 is an electronic pressure gauge.

The working process of this embodiment is as follows:

First install the bracket 2 on the lower end of the pendulum 4, then lift the pendulum 4, select the movable rod 24 with different lengths according to the pendulum length of the pendulum 4, and set the impact knife edge position of the pendulum 4 (measurement force F action point) ) on the V-shaped positioning groove 231 on the upper end of the second positioning member 23, then use the digital display inclinometer to judge whether the pendulum 4 is in a horizontal position, and rotate the movable rod 24 to adjust its height according to the angle display of the digital display inclinometer , so that the pendulum 4 is in a horizontal position, and then put the first positioning part 14 of the caliper body 1 on the pendulum shaft 5, the V-shaped clamping plate 141 of the first positioning part 14 will automatically find the axis of the pendulum shaft 5, Then insert the sharp corner of the movable clamp foot 13 of the caliper body 1 into the lowest position in the V-shaped positioning groove 231 on the upper end of the second positioning member 23. At this time, the measured value of the caliper 1 is the axis center of the pendulum shaft 5 to the measuring force. The distance between the point of action of F and the result measured by the pressure measuring piece 22 is the value of the measuring force F. During this process, the automatic positioning of the axis center of the pendulum shaft 5 and the point of action of the measuring force F is realized, eliminating the need for visual positioning of the pendulum. The human error of the axis center of the hammer shaft and the action point of the measuring force F greatly improves the measurement accuracy

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (9)

1. A special verification device for a pendulum impact testing machine, characterized in that it comprises a caliper and a support, and the caliper comprises a caliper body and a first locator, and the first locator is arranged on the fixed feet of the caliper body for Locate the axis of the pendulum shaft; the bracket includes a base, a pressure measuring piece and a second positioning piece, the pressure measuring piece is arranged on the base, the second positioning piece is arranged on the pressure measuring piece, and the second positioning piece is used for Cooperate with the movable clamping feet of the caliper body to locate and measure the action point of the force F. 2 . The special verification device for a pendulum impact testing machine according to claim 1 , wherein the first positioning member includes a clamping plate, and the clamping plate is arranged on a fixed clamping foot of the caliper body. 3 . 3. The special verification device for pendulum impact testing machine according to claim 2, characterized in that, the clamping plate has a V-shaped structure, and the central plane of the clamping plate is the same plane as the measuring surface of the fixed clamping foot of the caliper body. 4. The special verification device for a pendulum impact testing machine according to claim 1, characterized in that, the first positioning member is detachably connected to the fixing feet of the caliper body. 5. The special verification device for pendulum impact testing machine according to claim 2, characterized in that, the first positioning member also includes a connecting plate, the clamping plate is arranged on the connecting plate, and the fixing of the connecting plate and the caliper body Snap-in threaded connection. 6. The special verification device for pendulum impact testing machine according to claim 1, characterized in that, the second positioning member is a positioning rod, one end of the positioning rod is provided with a positioning groove, and the other end is connected to the pressure measuring member. connect. 7. The special verification device for a pendulum impact testing machine according to claim 6, wherein the positioning groove is a V-shaped groove. 8. The special verification device for pendulum impact testing machine according to claim 1, characterized in that, the bracket also includes a movable rod, the movable rod is arranged between the pressure measuring piece and the base, and the movable rod and the base active connection. 9. The special verification device for pendulum impact testing machine according to claim 8, characterized in that the movable rod is screwed to the base.