A weight set anti-toppling device suitable for a static weight machine and a static weight machine

Abstract

The utility model provides a kind of weight set anti-toppling device suitable for static weight machine and static weight machine, the device includes rotating disc assembly, rotating disc cover is connected in rotating disc assembly top, and weight set is placed in the top of rotating disc cover;Air claw positioning ring mechanism includes several three-jaw air cylinders and positioning ring;Positioning ring all includes positioning sub-ring, connecting rod is connected in the bottom of positioning sub-ring, and connecting rod is connected with the output end of corresponding three-jaw air cylinder, and every three-jaw air cylinder drives three positioning sub-ring to act simultaneously to clamp weight set, can guarantee the position of every group weight to be on a straight line, prevent the problem that weight occurs toppling.When monitoring sensor senses that rotating disc cover position is inclined, it can be made into ball head seat deflection by telescopic air cylinder, to make fine adjustment to the levelness of rotating disc cover, so that the top surface levelness of rotating disc cover is controlled in the range set.By controlling the levelness of rotating disc cover, the possibility of weight set inclination, toppling is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to force sensor calibration equipment technical field especially suitable for static weight machine's weight set anti -toppling device and static weight machine. BACKGROUND

[0002] Force sensor is a kind of device that force signal is changed into electric signal output, has wide application in 3C product test, new energy product assembly, precision assembly, robot field and other industrial test, measurement and control system etc. field. Usually, force sensor needs to be calibrated when using to determine the input-output relationship of force sensor. And in the calibration process of force sensor, static weight machine is its key equipment. Static weight machine is mainly composed of rack, moving beam, reverser, several groups of different weight specifications weight sets and the weight tray for bearing weight set, weight loading and unloading mechanism for driving weight tray lifting etc. Each group of weight set includes multiple weights. When calibrating, rotating weight tray, the weight set needed is hung into counterforce frame, weight loading and unloading mechanism drives weight tray to move down, and weights are loaded on counterforce frame one by one to calibrate test of force sensor.

[0003] But when rotating weight tray, weights are easy to sway. In the prior art, to prevent weight toppling, the usual practice is to rotate weight tray slowly to reduce the sway amplitude of weight, to reduce the possibility of weight toppling. But by taking the above method, the problem of weight toppling still cannot be avoided. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem, to provide a kind of weight set anti-toppling device and static weight machine suitable for static weight machine, avoid the unstable phenomenon of weight in the process of rotation, improve the security and reliability of force sensor calibration.

[0005] The utility model is realized as follows:

[0006] Firstly, the utility model provides a kind of weight set anti-toppling device suitable for static weight machine, including rotating disc assembly, rotating disc cover is connected in the top of rotating disc assembly, and several weight sets of different weight specifications are placed in the top of rotating disc cover;

[0007] The device further includes air claw positioning ring mechanism, the air claw positioning ring mechanism includes several three-jaw air cylinders and positioning rings, the three-jaw air cylinders and positioning rings are set one by one with weight set, the rotating disc cover and rotating disc assembly have accommodating cavity between them, the three-jaw air cylinders are set in accommodating cavity, and the positioning ring is slidably connected in the top of rotating disc cover;

[0008] Each of the positioning rings comprises three positioning sub-rings, each of the positioning sub-rings is internally provided with a clamping piece made of soft material, each of the positioning sub-rings is connected with a connecting rod at the bottom, the rotating disc cover is provided with a long hole, the connecting rod penetrates through the long hole and is connected with the output end of the corresponding three-jaw cylinder, each of the three-jaw cylinders drives the three positioning sub-rings to act simultaneously to clamp the weight set.

[0009] Further, the rotating disc assembly is composed of a rotating disc and a cylinder ball seat horizontal adjustment mechanism, the cylinder ball seat horizontal adjustment mechanism comprises a ball head base and a ball head seat, the ball head base is fixed at the top of the rotating disc, the ball head seat is hingedly connected at the top of the ball head base, and the rotating disc cover and the three-jaw cylinder are arranged at the top of the ball head seat.

[0010] The outer edge of the rotating disc is provided with at least three foot supports in an annular array, each of the foot supports is hingedly connected with a telescopic cylinder, and the output end of the telescopic cylinder is hingedly connected with the ball head seat.

[0011] The outer edge of the rotating disc is further provided with a monitoring sensor for monitoring the levelness of the ball head seat.

[0012] Further, the monitoring sensor is an optical sensor.

[0013] In the second aspect, the utility model provides a static weight machine, including the weight set anti -toppling device in first aspect,

[0014] Further, further include frame, reverse ware, weight set, weight loading and unloading mechanism and moving beam, the frame includes bottom plate, middle beam and upper beam, the bottom plate is rigidly connected with the middle beam through four stand columns, and the middle beam is rigidly connected with the upper beam through four guide rods;

[0015] A pair of lead screws are rotatably connected between the middle beam and the upper beam, the moving beam is installed on the lead screw through a nut sleeve, and a clamp for fixing a tested force sensor is arranged on the top of the moving beam.

[0016] The upper end of the reverse ware is hung on the upper beam and is in sliding connection with the upper beam, the lower end of the reverse ware is connected with a weight connecting mechanism, and the lower end of the weight connecting mechanism penetrates through the middle beam and extends below the middle beam.

[0017] The weight loading and unloading mechanism is arranged on the top of the bottom plate, and the weight set anti-toppling device is installed on the upper end of the weight loading and unloading mechanism.

[0018] Further, the bottom of the middle beam is provided with a driving mechanism for driving the rotation of the lead screw, the driving mechanism comprises a first servo motor, the first servo motor is connected with two speed reducers, and the speed reducers are connected with the lead screw.

[0019] Further, the reverser is composed of an upper support, a pull rod and a lower support to form a frame structure, the upper support is hung on the upper beam, the lower end of the pull rod penetrates the moving beam and extends to the lower end of the moving beam, the weight connecting mechanism is hung on the lower support and is in sliding connection with the lower support.

[0020] Further, the weight connecting mechanism comprises a hanging rod connected with the lower support, the upper end of the hanging rod is provided with a reverse tapered connecting part for hanging the hanging rod on the lower support, and the lower end of the hanging rod is provided with a hanging part with a hanging groove, and the upper end of the weight set is provided with a hanging rod matched with the hanging groove, and the hanging rod is connected in the hanging groove when the weight set is loaded.

[0021] Further, the weight loading and unloading mechanism comprises a screw rod elevator, a fixed support, a mounting disc and a rotating assembly for driving a rotary disc to rotate, the fixed support is fixed on the bottom plate and has an upper layer and a lower layer structure, the screw rod elevator is arranged on the upper layer of the fixed support, the screw rod elevator is connected with the mounting disc, the bottom of the mounting disc is provided with a guide rod, the guide rod is in sliding connection with the fixed support, and the rotating assembly is arranged on the top of the mounting disc.

[0022] The utility model discloses the advantages are in: when the rotary disc rotates, the positioning ring is clamped on the outer wall of the weight set, can guarantee the position of each group weight to be on a straight line, prevents the problem that the weight inclines and falls. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model discloses make further explanation to the utility model in combination with embodiment below with reference to the drawings.

[0024] Figure 1 It is the weight set anti -toppling device structure schematic drawing of the utility model for static weight machine.

[0025] Figure 2 It is the static weight machine structure schematic drawing of the utility model.

[0026] Figure 3 It is the static weight machine local structure schematic of the utility model Figure 1 .

[0027] Figure 4 It is the static weight machine local structure schematic of the utility model Figure 2 .

[0028] Figure 5The utility model discloses a counter and weight connecting mechanism connecting structure schematic view.

[0029] Figure 6 The utility model discloses a weight group hangs in the partial structure schematic view of weight connecting mechanism on the weight connecting mechanism;

[0030] Figure 7 The utility model discloses a static weight machine partial structure schematic Figure 3 ;

[0031] Mark explanation in drawing:

[0032] 1, the rotating disc assembly, 101, the rotating disc, 102, the cylinder ball seat horizontal adjusting mechanism, 1021, the ball head base, 1022, the ball head seat, 1023, the foot seat support, 1024, the telescopic cylinder, 103, the monitoring sensor, 2, the rotating disc cover, 21, the long slot, 3, the weight group, 31, the suspender, 4, the claw positioning ring mechanism, 41, the three-jaw cylinder, 42, the positioning ring, 421, the positioning subring, 43, the clamping piece, 44, the connecting rod, 5, the frame, 51, the bottom plate, 52, the middle beam, 53, the upper beam, 6, the counter, 61, the upper support, 62, the pull rod, 63, the lower support, 7, the weight loading and unloading mechanism, 71, the screw rod elevator, 72, the fixed support, 73, the mounting disc, 74, the slewing assembly, 75, the guide rod, 76, the second servo motor, 8, the moving beam, 81, the clamp, 9, the screw rod, 10, the guide rod, 11, the weight connecting mechanism, 111, the hanging rod, 112, the connecting part, 113, the hanging part, 12, the driving mechanism, 121, the first servo motor, 122, the speed reducer. DETAILED DESCRIPTION

[0033] The technical scheme of the utility model will be described clearly and completely in connection with the drawings and specific embodiments. In the description of the utility model, it is necessary to explain that the orientation, direction or position relation of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" are based on the orientation, direction or position relation shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, direction or position, and be constructed and operated in a particular orientation, direction or position, therefore, cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or it can be detachable connection, or it can be integrally connected, it can be mechanical connection, or it can be electrical connection, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] Embodiment one, please refer to Figure 1 The utility model provides a kind of weight group anti-toppling device 100 suitable for static weight machine, including rotating disc assembly 1, rotating disc cover 2 is connected in rotating disc assembly 1 top, and several weight specifications different weight groups 3 are placed in rotating disc cover 2 top;

[0036] The device further includes air claw positioning ring mechanism 4, air claw positioning ring mechanism 4 includes several three-jaw air cylinders 41 and positioning ring 42, three-jaw air cylinder 41 and positioning ring 42 are set one by one with weight group 3, for example, weight group 3 is provided with four groups, then three-jaw air cylinder 41 and positioning ring 42 are provided with four respectively;Rotating disc cover 2 and rotating disc assembly 1 between there is accommodating cavity, three-jaw air cylinder 41 is set in accommodating cavity, and positioning ring 42 is slidably connected at rotating disc cover 2 top;

[0037] Each positioning ring 42 includes three positioning sub-rings 421, and the inner side of each positioning sub-ring 421 is provided with a clamping piece 43 made of soft material (such as polyurethane). Each positioning sub-ring 421 is connected with a connecting rod 44 at the bottom. The rotating disc cover 2 is provided with a long hole 21. The connecting rod 44 passes through the long hole 21 and is connected with the output end of the corresponding three-jaw air cylinder 41. When the rotating disc assembly 1 rotates, each three-jaw air cylinder 41 drives three positioning sub-rings 421 to act simultaneously to clamp the weight group 3. The clamping piece 43 can prevent the direct contact between the positioning sub-ring 421 and the weight, prevent the weight group from being damaged, and affect the calibration accuracy.

[0038] Specifically, the rotating disc assembly 1 is composed of a rotating disc 101 and a cylinder ball seat horizontal adjustment mechanism 102. The cylinder ball seat horizontal adjustment mechanism 102 includes a ball head base 1021 and a ball head seat 1022. The ball head base 1021 is fixed on the top of the rotating disc 101. The ball head seat 1022 is hingedly connected to the top of the ball head base 1021. The rotating disc cover 2 and the three-jaw air cylinder 41 are arranged on the top of the ball head seat 1022.

[0039] The outer edge annular array of the rotating disc 101 is provided with at least three foot support frames 1023, each of which is hinged with a telescopic air cylinder 1024, and the output end of the telescopic air cylinder 1024 is hinged with a ball head base 1022;

[0040] The outer edge of the rotating disc 101 is also provided with a monitoring sensor 103 for monitoring the levelness of the ball head base 1022.

[0041] Specifically, the monitoring sensor 103 is an optical sensor.

[0042] Embodiment two, please refer to Figures 1 to 7 The utility model provides a static weight machine 200, including a kind of weight set anti-toppling device 100 suitable for static weight machine in embodiment one, still including rack 5, reverser 6, weight set 3, weight loading and unloading mechanism 7 and moving beam 8, the rack 5 includes bottom plate 51, middle beam 52 and upper beam 53, the bottom plate 51 is rigidly connected with middle beam 52 by four columns, the middle beam 52 is rigidly connected with upper beam 53 by four guide rods 10, the guide rod 10 is slidably connected with moving beam 8;

[0043] Rotary connection is provided with a pair of screw rods 9 between the middle beam 52 and the upper beam 53, the moving beam 8 is installed on the screw rod 9 by nut sleeve, and the moving beam 8 is provided with clamp 81 for fixing the force sensor to be detected on top.

[0044] The upper end of the reverser 6 is hung on the upper beam 53 and is slidably connected with the upper beam 53, the lower end of the reverser 6 is connected with the weight connecting mechanism 11, and the lower end of the weight connecting mechanism 11 penetrates the middle beam 52 and extends below the middle beam 52; the moving beam 8 rises, the force sensor to be detected contacts the reverser 6, and the reverser 6 is lifted to make it no longer hung on the upper beam 53, at this time, the load of the reverser 6 under the gravity of the reverser 6 is completed.

[0045] The weight loading and unloading mechanism 7 is arranged on the top of the bottom plate 51, and the weight set anti-toppling device is installed on the upper end of the weight loading and unloading mechanism 7.

[0046] The static weight machine of the utility model is a small range static weight machine, the material of the reverser 6 is carbon fiber, the weight of the reverser 6 in the utility model is 1N, and the maximum weight specification of the weight set 3 does not exceed 50N, so as to realize detection on miniaturized force sensor.

[0047] Specifically, the middle beam 52 bottom is provided with a drive mechanism 12 for driving the rotation of the lead screw 9, the drive mechanism 12 comprises a first servo motor 121, the first servo motor 121 is connected with two speed reducers 122, the speed reducers 122 are connected with the lead screw 9.

[0048] Specifically, the reverser 6 is composed of an upper support 61, a pull rod 62 and a lower support 63, which are rigidly connected to form a frame structure, the upper support 61 is hung on the upper beam 53, and the upper support 61 is in sliding connection with the upper beam 53, the lower end of the pull rod 62 penetrates the moving beam 8 and extends to the lower end of the moving beam 8, the weight connecting mechanism 11 is hung on the lower support 63 and is in sliding connection with the lower support 63.

[0049] Specifically, the weight connecting mechanism 11 comprises a hanging rod 111 connected with the lower support 63, the upper end of the hanging rod 111 has a reverse tapered connecting portion 112, the connecting portion 112 is used for hanging the hanging rod 111 on the lower support 63, the lower end of the hanging rod 111 is provided with a hanging portion 113, the hanging portion 113 is provided with a hanging groove, the upper end of the weight set 3 is provided with a hanging rod 31 matched with the hanging groove, when the weight set 3 is loaded, the hanging rod 31 is connected in the hanging groove.

[0050] Specifically, the weight loading and unloading mechanism 7 comprises a lead screw elevator 71, a fixed support 72, a mounting disc 73 and a rotation assembly 74 for driving the rotation of the rotary disc 101, the fixed support 72 is fixed on the bottom plate 51, and the fixed support 72 is in a two-layer structure, the lead screw elevator 71 is arranged on the upper layer of the fixed support 72, the lead screw elevator 71 is connected with the mounting disc 73, the bottom of the mounting disc 73 is provided with a guide rod 75, the guide rod 75 is in sliding connection with the fixed support 72, and the rotation assembly 74 is arranged on the top of the mounting disc 73. The lead screw elevator 71 is driven by a second servo motor 76, and the rotation assembly 74 is an electric rotating platform.

[0051] According to the range of the detected force sensor, a suitable weight set 3 is selected. The rotation assembly 74 is controlled to rotate, so that the hanging rod 31 at the upper end of the weight set 3 moves into the hanging groove, then the lead screw elevator 71 drives the mounting disc 73 to descend, so that the weight set 3 is hung on the weight connecting mechanism 11, so as to test and calibrate the detected force sensor.

[0052] The utility model discloses the advantage lies in: when rotating disc 101 rotates, the positioning ring 42 is clamped in the outer wall of weight group 3, can guarantee the position of each group weight to be on a straight line, prevents the problem that weight inclines. When the rotating disc cover 2 position inclination is sensed to monitoring sensor 103, can make the ball head seat 1022 deflection through the telescopic telescopic cylinder 1024, to the levelness of rotating disc cover 2 is fine -tuned, thereby the top surface levelness control of rotating disc cover 2 is in the range of setting. Through the levelness of control rotating disc cover 2, also further reduced the possibility that weight group 3 inclines, inclines and falls.

[0053] Although the above describes the specific implementation of the utility model, but the skilled person in the art should understand, the specific example that we described is only illustrative, and is not used for the limitation of the scope of the utility model, the equivalent replacement and change that the skilled person in the art is made according to the spirit of the utility model should be covered in the range of protection of the claim of the utility model.

Claims

1. A weight stack anti-tip device for a static weight machine, comprising: The application relates to a weight group anti-toppling device for a static weight machine, which comprises a rotating disc assembly, a rotating disc cover connected to the top of the rotating disc assembly, and a plurality of weight groups with different weight specifications placed on the top of the rotating disc cover. The device further comprises a gas claw positioning ring mechanism, which comprises a plurality of three-claw gas cylinders and positioning rings, and the three-claw gas cylinders and the positioning rings are arranged one by one in correspondence with the weight groups. Each positioning ring comprises three positioning sub-rings, each of which is provided with a clamping piece made of soft material on the inner side, and each positioning sub-ring is connected with a connecting rod at the bottom.

2. A weight stack tippling prevention device for a static weight machine as recited in claim 1, wherein: The rotating disc cover is provided with a long hole, and the connecting rod passes through the long hole and is connected with the output end of the corresponding three-claw gas cylinder. The rotating disc assembly is composed of a rotating disc and a cylinder ball seat horizontal adjustment mechanism. The outer edge of the rotating disc is provided with at least three foot supports, each of which is hinged with a telescopic gas cylinder, and the output end of the telescopic gas cylinder is hinged with the ball seat.

3. A weight stack tippling prevention device for a static weight machine as recited in claim 2, wherein: The outer edge of the rotating disc is further provided with a monitoring sensor for monitoring the levelness of the ball seat.

4. A static weight machine characterized by: The monitoring sensor is an optical sensor. The application further relates to a weight group anti-toppling device for a static weight machine, which comprises a machine frame, a reverser, a weight group, a weight loading and unloading mechanism and a moving beam. The machine frame comprises a bottom plate, a middle beam and an upper beam, the bottom plate is rigidly connected with the middle beam through four vertical columns, and the middle beam is rigidly connected with the upper beam through four guide rods. A pair of lead screws are rotatably connected between the middle beam and the upper beam, and the moving beam is installed on the lead screws through a nut sleeve.

5. A static weight machine as claimed in claim 4 wherein: The upper end of the reverser is hung on the upper beam and is slidably connected with the upper beam, the lower end of the reverser is connected with a weight connecting mechanism, and the lower end of the weight connecting mechanism penetrates the middle beam and extends below the middle beam.

6. A static weight machine as claimed in claim 4 wherein: The weight loading and unloading mechanism is arranged on the top of the bottom plate, and the weight group anti-toppling device is installed on the upper end of the weight loading and unloading mechanism. The bottom of the middle beam is provided with a driving mechanism for driving the rotation of the lead screw, and the driving mechanism comprises a first servo motor. The reverser is rigidly connected with an upper support, a pull rod and a lower support to form a frame structure, the upper support is hung on the upper beam, the lower end of the pull rod penetrates the moving beam and extends to the lower end of the moving beam, and the weight connecting mechanism is hung on the lower support and is slidably connected with the lower support.

7. A static weight machine as claimed in claim 6 wherein: The weight connecting mechanism comprises a hanging rod connected with the lower support, the upper end of the hanging rod is provided with a reverse conical connecting part for hanging the hanging rod on the lower support, and the lower end of the hanging rod is provided with a hanging part with a hanging groove, the upper end of the weight set is provided with a hanging rod matched with the hanging groove, and the hanging rod is connected in the hanging groove when the weight set is loaded.

8. A static weight machine as claimed in claim 4 wherein: The weight loading and unloading mechanism comprises a screw rod elevator, a fixed support, a mounting disc and a rotating assembly for driving a rotating disc to rotate, the fixed support is fixed on the bottom plate and has a two-layer structure, the screw rod elevator is arranged on the upper layer of the fixed support, the screw rod elevator is connected with the mounting disc, the bottom of the mounting disc is provided with a guide rod, the guide rod is slidably connected with the fixed support, and the rotating assembly is arranged on the top of the mounting disc.

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