Weight loading and unloading driving mechanism and dead weight type force standard machine

Abstract

The utility model provides a weight loading and unloading driving mechanism and a dead weight type force standard machine. The weight loading and unloading driving mechanism comprises a wall plate, a guide rail unit, a plurality of motor modules and a supporting plate unit; the supporting plate unit comprises a plurality of front supporting plate modules and a plurality of rear supporting plate modules, the front supporting plate modules are installed on the first guide rails in a sliding mode, the rear supporting plate modules are installed on the second guide rails in a sliding mode, and the front supporting plate modules and the rear supporting plate modules are distributed at intervals in the height direction. According to the utility model, the supporting plate unit adopts a layout structure which is distributed at intervals in a front-back staggered manner, the front supporting plate module and the rear supporting plate module share a part of height space, and the layout structure is compact, so that the height space of the whole driving mechanism is reduced, the overall height of the force standard machine is reduced, and the configuration space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of force standard machines, in particular to a weight loading and unloading driving mechanism and a dead weight type force standard machine. Background Technique

[0002] A dead weight type force standard machine is a high-precision measuring device, mainly used for calibrating and detecting force measuring instruments or weighing sensors. The dead weight type force standard machine uses the gravity of weights as the standard load, and through the weight loading and unloading driving mechanism, the load is automatically and smoothly applied to the force measuring instrument or weighing sensor to be detected or calibrated in a predetermined order, and the value of the force to be measured is determined by comparing the force value and the gravity value. Due to different detection ranges, multiple layers of weights are usually arranged on the weight hanger of the force standard machine, and each layer of weights needs to be equipped with a driving mechanism to control its up and down movement within a limited height range to achieve the loading and unloading of the weights on the weight hanger. At present, the driving mechanisms of each layer are arranged in the same column up and down. Since each layer of the driving mechanism needs to occupy a certain height space, this results in a relatively large gap between adjacent weights, and thus the force standard machine occupies too much height space. Therefore, a more compactly arranged weight loading and unloading driving mechanism needs to be proposed. Content of the Utility Model

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide a weight loading and unloading driving mechanism and a dead weight type force standard machine.

[0004] To achieve the above purpose, the technical solution adopted by the utility model to solve its technical problems is: a weight loading and unloading driving mechanism, comprising:

[0005] Wall panels;

[0006] A guide rail unit, which includes a first guide rail and a second guide rail arranged in parallel. The first guide rail is vertically installed on the front side of the wall panel opposite to the weight hanger, and the second guide rail is vertically installed on the rear side of the wall panel opposite to the weight hanger;

[0007] A plurality of motor modules, which are arranged at intervals in the height direction and installed at the middle position between the first guide rail and the second guide rail;

[0008] A pallet unit, which includes a plurality of front pallet modules and a plurality of rear pallet modules. All the front pallet modules are slidably installed on the first guide rail, and all the rear pallet modules are slidably installed on the second guide rail. Each front pallet module is independently driven by a corresponding motor module, and each rear pallet module is also independently driven by a corresponding motor module; in the height direction, the front pallet modules and the rear pallet modules are distributed at intervals one by one.

[0009] By adopting the technical solution of the utility model, the pallet unit adopts a layout structure with front and rear staggered spacing, so that the front pallet module and the rear pallet module share part of the height space, and the layout structure is compact, thereby reducing the height space of the entire drive mechanism, reducing the overall height of the force standard machine, and saving configuration space.

[0010] Furthermore, the front support plate module includes a first slider, a first support plate and a first baffle, the first support plate includes a first horizontal plate body, a first upper connecting part, a first upper pressing part and a first clearance opening, the first horizontal plate body is used to support the weight, the first upper connecting part is located in the front part of the root end of the first horizontal plate body, the first upper connecting part is fixedly connected to the upper part of the first slider, the first upper pressing part is located in the middle part of the root end of the first horizontal plate body, the first clearance opening is located at the rear part of the root end of the first horizontal plate body, the first baffle includes a first lower connecting part and a first lower pressing part, the first lower connecting part is fixedly connected to the lower part of the first slider, and the first lower pressing part is located directly below the first upper pressing part.

[0011] Furthermore, the rear support plate module includes a second slider, a second support plate and a second baffle, the second support plate includes a second horizontal plate body, a second upper connecting portion, a second upper pressing portion and a second clearance opening, the second horizontal plate body is used to support the weight, the second upper connecting portion is located at the rear of the root end of the second horizontal plate body, the second upper connecting portion is fixedly connected to the upper portion of the second slider, the second upper pressing portion is located in the middle of the root end of the second horizontal plate body, the second clearance opening is located at the front portion of the root end of the second horizontal plate body, the second baffle includes a second lower connecting portion and a second lower pressing portion, the second lower connecting portion is fixedly connected to the lower portion of the second slider, and the second lower pressing portion is located directly below the second upper pressing portion.

[0012] Furthermore, the motor module includes a drive motor, a bearing seat, a rotating wheel, an eccentric shaft and a shift bearing, the base of the drive motor is installed on the bearing seat, the rotating shaft of the drive motor passes through the bearing center hole in the bearing seat, the rotating wheel is installed on the shaft end of the rotating shaft of the drive motor, the eccentric shaft is eccentrically installed on the rotating wheel, and the shift bearing is sleeved on the eccentric shaft; on the front support plate module, the shift bearing of the motor module is located between the first upper pressure part and the first lower pressure part; on the rear support plate module, the shift bearing of the motor module is located between the second upper pressure part and the second lower pressure part.

[0013] With the above - mentioned preferred solution, the structure is more compact. By the rotation of the driving motor, the shifting bearing rotates eccentrically around the motor shaft with the eccentric shaft, and then drives the corresponding front support plate module or rear support plate module to reciprocate up and down along their respective guide rails. When at the upper limit position, it can lift the corresponding weight, and the weight is disengaged from the weight hanger, realizing the unloading of the corresponding weight. When at the lower limit position, the weight is suspended on the weight hanger, and the support plate is disengaged from the weight, realizing the loading of the corresponding weight.

[0014] Furthermore, an inward - concave card slot is provided at the mating part of the first upper connecting part and the first slider; an inward - concave card slot is provided at the mating part of the second upper connecting part and the second slider.

[0015] With the above - mentioned preferred solution, the stability of the installation position is improved, ensuring that the first horizontal plate part and the second horizontal plate part remain horizontal.

[0016] Furthermore, the thickness of the first support plate is greater than the thickness of the first baffle; the thickness of the second support plate is greater than the thickness of the second baffle.

[0017] With the above - mentioned preferred solution, the large thickness of the support plate can ensure the structural strength and ensure the stability of holding the weight. Since the acting force during unloading is small, the small thickness of the baffle helps to reduce the weight and achieve lightweight.

[0018] Furthermore, conical guide posts are respectively provided on the front and rear sides of the front end of the first horizontal plate part of the first support plate; conical guide posts are respectively provided on the front and rear sides of the front end of the second horizontal plate part of the second support plate.

[0019] With the above - mentioned preferred solution, it plays a guiding role for the placed weight and realizes centering and alignment.

[0020] A dead - weight force standard machine includes a main structure frame, a reaction frame, a weight hanger and a plurality of weights, and also includes the above - mentioned weight loading and unloading driving mechanism. The reaction frame is located above the main structure frame, the weight hanger is connected to the lower end of the reaction frame, and the weight loading and unloading driving mechanisms are respectively arranged on the left and right sides of the weight hanger.

[0021] With the above - mentioned technical solution, the overall height of the force standard machine can be reduced, saving the configuration space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a perspective view of an implementation manner of the weight loading and unloading driving mechanism of the present utility model.

[0024] Figure 2 is Figure 1 the partial enlarged view at position A in

[0025] Figure 3 It is the partial enlarged view of the weight loading and unloading driving mechanism of the present utility model.

[0026] Figure 4 It is the structural schematic diagram of the front support plate module.

[0027] Figure 5 It is the structural schematic diagram of the rear support plate module.

[0028] Figure 6 It is the structural schematic diagram of the motor module.

[0029] Figure 7 It is the structural schematic diagram of the dead weight type force standard machine of the present utility model.

[0030] The names of the corresponding components represented by the numbers and letters in the figure:

[0031] 10 - Wall panel; 21 - First guide rail; 22 - Second guide rail; 30 - Motor module; 31 - Driving motor; 32 - Bearing seat; 33 - Runner; 34 - Eccentric shaft; 35 - Shifting bearing; 40 - Front support plate module; 41 - First slider; 42 - First support plate; 421 - First horizontal plate body part; 422 - First upper connecting part; 423 - First upper pressing part; 424 - First relief opening; 425 - Tapered guide post; 43 - First baffle; 431 - First lower connecting part; 432 - First lower pressing part; 50 - Rear support plate module; 51 - Second slider; 52 - Second support plate; 521 - Second horizontal plate body part; 522 - Second upper connecting part; 523 - Second upper pressing part; 524 - Second relief opening; 53 - Second baffle; 531 - Second lower connecting part; 532 - Second lower pressing part; 91 - Main structure frame; 92 - Reaction frame; 93 - Weight hanging rack; 94 - Weight. Specific implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0033] Such as Figure 1-7As shown, one embodiment of the present utility model is: A weight loading and unloading driving mechanism, comprising:

[0034] Wall panel 10;

[0035] A guide rail unit, which includes a first guide rail 21 and a second guide rail 22 arranged in parallel. The first guide rail 21 is vertically installed on the front side of the wall panel 10 opposite to the weight hanger, and the second guide rail 22 is vertically installed on the rear side of the wall panel 10 opposite to the weight hanger;

[0036] A plurality of motor modules 30, which are installed at intervals in the height direction at the middle position between the first guide rail 21 and the second guide rail 22;

[0037] A pallet unit, which includes a plurality of front pallet modules 40 and a plurality of rear pallet modules 50. All the front pallet modules 40 are slidably installed on the first guide rail 21, and all the rear pallet modules 50 are slidably installed on the second guide rail 22. Each front pallet module 40 is independently driven by a corresponding motor module 30, and each rear pallet module 50 is also independently driven by a corresponding motor module 30; in the height direction, the front pallet modules 40 and the rear pallet modules 50 are distributed at intervals one by one.

[0038] The beneficial effect of adopting the above technical solution is: The pallet unit adopts a layout structure with staggered front and rear intervals, so that the front pallet modules and the rear pallet modules share part of the height space, and the layout structure is compact, thereby reducing the height space of the entire driving mechanism, lowering the overall height of the force standard machine, and saving the configuration space.

[0039] In some other embodiments of the present utility model, the front support plate module 40 includes a first slider 41, a first support plate 42 and a first baffle 43. The first support plate 42 includes a first horizontal plate body portion 421, a first upper connecting portion 422, a first upper pressing portion 423 and a first relief opening 424. The first horizontal plate body portion 421 is used for supporting the weights. The first upper connecting portion 422 is located at the front of the root end of the first horizontal plate body portion 421, and the first upper connecting portion 422 is fixedly connected to the upper part of the first slider 41. The first upper pressing portion 423 is located in the middle of the root end of the first horizontal plate body portion 421, and the first relief opening 424 is located at the rear of the root end of the first horizontal plate body portion 421. The first baffle 43 includes a first lower connecting portion 431 and a first lower pressing portion 432. The first lower connecting portion 431 is fixedly connected to the lower part of the first slider 41, and the first lower pressing portion 432 is located directly below the first upper pressing portion 423. The rear support plate module 50 includes a second slider 51, a second support plate 52 and a second baffle 53. The second support plate 52 includes a second horizontal plate body portion 521, a second upper connecting portion 522, a second upper pressing portion 523 and a second relief opening 524. The second horizontal plate body portion 521 is used for supporting the weights. The second upper connecting portion 522 is located at the rear of the root end of the second horizontal plate body portion 521, and the second upper connecting portion 522 is fixedly connected to the upper part of the second slider 51. The second upper pressing portion 523 is located in the middle of the root end of the second horizontal plate body portion 521, and the second relief opening 524 is located at the front of the root end of the second horizontal plate body portion 521. The second baffle 53 includes a second lower connecting portion 531 and a second lower pressing portion 532. The second lower connecting portion 531 is fixedly connected to the lower part of the second slider 51, and the second lower pressing portion 532 is located directly below the second upper pressing portion 523. The motor module 30 includes a driving motor 31, a bearing seat 32, a runner 33, an eccentric shaft 34 and a shifting bearing 35. The base of the driving motor 31 is mounted on the bearing seat 32. The rotating shaft of the driving motor 31 passes through the bearing center hole in the bearing seat 32. The runner 33 is mounted at the shaft end of the rotating shaft of the driving motor 31. The eccentric shaft 34 is eccentrically mounted on the runner 33. The shifting bearing 35 is sleeved on the eccentric shaft 34. On the front support plate module 40, the shifting bearing 35 of the motor module 30 is located between the first upper pressing portion 423 and the first lower pressing portion 432. On the rear support plate module 50, the shifting bearing 35 of the motor module 30 is located between the second upper pressing portion 523 and the second lower pressing portion 532. The beneficial effects of adopting the above technical solution are as follows: The structure is more compact. By the rotation of the driving motor, the shifting bearing rotates eccentrically around the motor shaft along with the eccentric shaft, thereby driving the corresponding front support plate module or rear support plate module to reciprocate up and down along their respective guide rails. When at the upper limit position, it can lift the corresponding weights, and the weights are separated from the weight hanging rack, realizing the unloading of the corresponding weights. When at the lower limit position, the weights are suspended on the weight hanging rack, and the support plate is separated from the weights, realizing the loading of the corresponding weights.

[0040] In some other embodiments of the present utility model, a concave clamping groove is provided at the mating portion between the first upper connecting portion 422 and the first slider 41; a concave clamping groove is provided at the mating portion between the second upper connecting portion 522 and the second slider 51. The beneficial effect of adopting the above technical solution is: to improve the stability of the installation position and ensure that the first horizontal plate body portion and the second horizontal plate body portion remain horizontal.

[0041] In some other embodiments of the present utility model, the thickness of the first support plate 42 is greater than the thickness of the first baffle 43; the thickness of the second support plate 52 is greater than the thickness of the second baffle 53. The beneficial effect of adopting the above technical solution is: the large thickness of the support plate can ensure the structural strength and ensure the stability of holding the weights; since the acting force is small during unloading, the small thickness of the baffle helps to reduce the weight and achieve light weight.

[0042] In some other embodiments of the present utility model, tapered guide posts 425 are respectively provided on the front and rear sides of the front end of the first horizontal plate body portion 421 of the first support plate; tapered guide posts 425 are respectively provided on the front and rear sides of the front end of the second horizontal plate body portion 521 of the second support plate. The beneficial effect of adopting the above technical solution is: to play a guiding role for the placed weights and achieve centering and alignment.

[0043] As Figure 7 shown, a deadweight force standard machine includes a main structural frame 91, a reaction frame 92, a weight hanging frame 93 and a plurality of weights 94, and further includes the above-mentioned weight loading and unloading driving mechanism. The reaction frame 92 is located above the main structural frame 91, the weight hanging frame 93 is connected to the lower end of the reaction frame 92, and weight loading and unloading driving mechanisms are respectively arranged on the left and right sides of the weight hanging frame 93. The beneficial effect of adopting the above technical solution is: it can reduce the overall height of the force standard machine and save the configuration space.

[0044] The above embodiments are only used to illustrate the technical concept and characteristics of the present utility model, and the purpose is to enable those of ordinary skill in the art to understand the content of the present utility model and implement it. It should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A weight loading and unloading drive mechanism, characterized in that include: wall panels; A guide rail unit comprising a first guide rail and a second guide rail arranged in parallel, wherein the first guide rail is vertically mounted on the front side of the wall panel opposite to the weight hanger, and the second guide rail is vertically mounted on the rear side of the wall panel opposite to the weight hanger; A plurality of motor modules are arranged at intervals in the height direction and installed in the middle position between the first guide rail and the second guide rail; The pallet unit includes multiple front pallet modules and multiple rear pallet modules. All the front pallet modules can be slidably mounted on the first guide rail, and all the rear pallet modules can be slidably mounted on the second guide rail. Each front pallet module is independently driven by a corresponding motor module, and each rear pallet module is also independently driven by a corresponding motor module. In the height direction, the front pallet modules and the rear pallet modules are distributed at intervals.

2. The weight loading and unloading driving mechanism according to claim 1, characterized in that: The front support plate module includes a first slider, a first support plate and a first baffle, the first support plate includes a first horizontal plate body, a first upper connecting portion, a first upper pressing portion and a first clearance opening, the first horizontal plate body is used to support the weight, the first upper connecting portion is located in the front part of the root end of the first horizontal plate body, the first upper connecting portion is fixedly connected to the upper part of the first slider, the first upper pressing portion is located in the middle part of the root end of the first horizontal plate body, the first clearance opening is located at the rear part of the root end of the first horizontal plate body, the first baffle includes a first lower connecting portion and a first lower pressing portion, the first lower connecting portion is fixedly connected to the lower part of the first slider, and the first lower pressing portion is located directly below the first upper pressing portion.

3. The weight loading and unloading driving mechanism according to claim 2, wherein The rear support plate module includes a second slider, a second support plate and a second baffle, the second support plate includes a second horizontal plate body, a second upper connecting portion, a second upper pressing portion and a second clearance opening, the second horizontal plate body is used to support the weight, the second upper connecting portion is located at the rear of the root end of the second horizontal plate body, the second upper connecting portion is fixedly connected to the upper part of the second slider, the second upper pressing portion is located in the middle of the root end of the second horizontal plate body, the second clearance opening is located at the front part of the root end of the second horizontal plate body, the second baffle includes a second lower connecting portion and a second lower pressing portion, the second lower connecting portion is fixedly connected to the lower part of the second slider, and the second lower pressing portion is located directly below the second upper pressing portion.

4. The weight loading and unloading driving mechanism according to claim 3, characterized in that, The motor module includes a drive motor, a bearing seat, a rotating wheel, an eccentric shaft and a shift bearing. The base of the drive motor is installed on the bearing seat, the rotating shaft of the drive motor passes through the bearing center hole in the bearing seat, the rotating wheel is installed on the shaft end of the rotating shaft of the drive motor, the eccentric shaft is eccentrically installed on the rotating wheel, and the shift bearing is sleeved on the eccentric shaft; on the front support plate module, the shift bearing of the motor module is located between the first upper pressure part and the first lower pressure part; on the rear support plate module, the shift bearing of the motor module is located between the second upper pressure part and the second lower pressure part.

5. The weight loading and unloading driving mechanism according to claim 4, wherein, The thickness of the first supporting plate is greater than that of the first baffle; the thickness of the second supporting plate is greater than that of the second baffle.

6. The weight loading and unloading driving mechanism according to claim 4, characterized in that Conical guide posts are respectively arranged on the front and rear sides of the front end of the first horizontal plate body part of the first supporting plate; conical guide posts are respectively arranged on the front and rear sides of the front end of the second horizontal plate body part of the second supporting plate.

7. The weight loading and unloading driving mechanism according to claim 4, wherein, A concave clamping groove is arranged at the mating part of the first upper connecting part and the first slider; a concave clamping groove is arranged at the mating part of the second upper connecting part and the second slider.

8. A deadweight force standard machine, characterized in that, It includes a main structural frame, a reaction frame, a weight hanging frame and a plurality of weights, and further includes a weight loading and unloading driving mechanism as described in any one of claims 1-7. The reaction frame is located above the main structural frame, the weight hanging frame is connected to the lower end of the reaction frame, and the weight loading and unloading driving mechanisms are respectively arranged on the left and right sides of the weight hanging frame.

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