Force sensor loading test device

Abstract

The utility model relates to the technical field of force sensor testing devices, in particular to a force sensor loading testing device and a force sensor loading testing system. Compared with an existing mode of supporting a weight through a power mechanism, the loading test device of the force sensor has the advantages that the loading piece is lifted through the lifting piece, the mode of lifting the loading piece and the weight through the lifting piece is adopted, the power mechanism does not need to be supported at the bottom of the weight, the height of the weight can be reduced, and then the height of the test device is reduced; operation such as dismounting of the force sensor in a test is facilitated, the test efficiency is improved, and the accuracy and repeatability of a test loading position are further improved by adopting a guide mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of force sensor testing devices, and in particular to a force sensor loading testing device. Background Art

[0002] Force sensors need to be tested before leaving the factory. Usually, the force sensor parameters are tested to see if they are normal by loading weights. At present, manual and electric weight loading methods are generally used in the process of testing force sensors. When loading manually, the weight usually exceeds 10kg, which is very physically demanding, and the loading speed and loading point are not easy to control. When a power mechanism is used to load weights, the power mechanism is usually used to support the weights from the bottom of the weights. When loading is required, the power mechanism falls, so that the weights are loaded on the force sensor. Although this can save physical effort, the power mechanism needs to be supported at the bottom of the weights, making the weights higher. Since the force sensor needs to be arranged above the weights, this will make the installation position of the force sensor higher, making it inconvenient to load and unload during the test. Utility Model Content

[0003] The present application provides a loading test device for a force sensor, which is used to improve the problem that the force sensor is installed at a high position and is inconvenient to operate because it needs to be supported at the bottom of a weight by a power mechanism.

[0004] In a first aspect, an embodiment provides a force sensor loading test device, comprising:

[0005] frame;

[0006] A force sensor fixing structure, the force sensor fixing structure is arranged on the frame and is used to fix the force sensor;

[0007] A loading member, the loading member is used to connect the weight; the loading member is movably arranged on the frame and has a loading position and an unloading position; the loading member is used to load the force sensor being tested when it is at the loading position, and unload the force sensor being tested when it is at the unloading position;

[0008] A lifting member, wherein the lifting member is movably connected to the loading member, and the lifting member is used to lift and place the loading member so that the loading member switches between the loading position and the unloading position; when the lifting member puts down the loading member, the loading member is in the loading position and the lifting member is out of contact with the loading member, and when the lifting member lifts the loading member, the loading member is in the unloading position;

[0009] and a power mechanism, wherein the power mechanism is arranged on the frame and is used to provide power to the lifting member.

[0010] Furthermore, in one embodiment, the loader has a loader guide structure, and the frame has a frame guide structure, and the frame guide structure is used to cooperate with the loader guide structure to guide the movement of the loader; the loader guide structure is disengaged from the frame guide structure when the loader is in the loading position, and cooperates with the frame guide structure during the movement of the loader to the unloading position after leaving the loading position, so as to guide the loader to reset to the unloading position.

[0011] Further, in one embodiment, the loader guide structure includes a guide hole, and the rack guide structure includes a guide column adapted to the guide hole, or the rack guide structure includes a guide hole, and the loader guide structure includes a guide column adapted to the guide hole;

[0012] When the loader is at the loading position, the guide post leaves the guide hole; when the loader leaves the loading position and moves to the unloading position, the guide post is inserted into the guide hole;

[0013] One end of the guide hole for inserting the guide post is a flared hole, the flared hole guides the guide post to be inserted into the guide hole, and / or one end of the guide post inserted into the guide hole has a guide slope, the guide slope guides the guide post to be inserted into the guide hole.

[0014] Furthermore, in one embodiment, the loader guide structure and / or the rack guide structure has an introduction structure, and the introduction structure guides the rack guide structure and the rack guide structure to switch from a disengaged contact state to a guide matching state.

[0015] Furthermore, in one embodiment, the lifting member cooperates with the upper and lower guides of the frame so that the frame guides the lifting member to move up and down.

[0016] Furthermore, in one embodiment, the power mechanism includes a driving mechanism, a pulling member and a reversing wheel, the pulling member is wound around the reversing wheel to achieve reversal, and the driving mechanism applies force to the lifting member through the pulling member.

[0017] Furthermore, in one embodiment, the lifting member and the loading member are movably connected via an axial hole structure, and the axial hole structure includes a lifting shaft extending up and down and a lifting hole extending up and down; when the loading member is in the loading position, the lifting shaft is out of contact with the lifting hole; when the loading member is in the unloading position, the lifting shaft is engaged with the lifting hole by upper and lower stops.

[0018] Furthermore, in one embodiment, the lifting hole and the opening for the upper and lower stops of the lifting shaft are flared, and the lifting shaft includes a reducing shaft section; in the loading position, the reducing shaft section is separated from the flared opening; in the unloading position, the reducing shaft section is at least partially in the flared opening and in positioning contact with the flared opening, so that the lifting shaft is coaxial with the lifting hole.

[0019] Furthermore, in one embodiment, when the loading member is in the loading position, the loading member is out of contact with the frame.

[0020] In a second aspect, an embodiment provides a force sensor loading test device, comprising:

[0021] frame;

[0022] A force sensor fixing structure, the force sensor fixing structure is arranged on the frame and is used to fix the force sensor;

[0023] A loading member, the loading member is used to connect the weight; the loading member is movably arranged on the frame and has a loading position and an unloading position; the loading member is used to load the force sensor being tested when it is at the loading position, and unload the force sensor being tested when it is at the unloading position;

[0024] A lifting member, the lifting member is connected to the loading member, the lifting member is used to lift the loading member so that the loading member can be switched between the loading position and the unloading position; when the lifting member lifts the loading member, the loading member is in the unloading position; when the lifting member puts down the loading member, the loading member is in the loading position;

[0025] and a power mechanism, wherein the power mechanism is arranged on the frame and is used to provide power to the lifting member.

[0026] According to the loading test device of the force sensor in the above-mentioned embodiment, the loading test device of the force sensor lifts the loading member through a lifting piece. Compared with the current method of supporting the weight by a power mechanism, the present application adopts a method of lifting the loading member and the weight by a lifting piece. There is no need to support the power mechanism at the bottom of the weight, which can lower the height of the weight and thus lower the height of the installation position of the force sensor, making it convenient to disassemble the force sensor during testing and improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a force sensor loading test device in an embodiment;

[0028] Figure 2 A front view of a force sensor loading test device in one embodiment;

[0029] Figure 3 For along Figure 2 Sectional view of AA in the middle;

[0030] Figure 4 It is a schematic diagram of the structure of two test units in a force sensor loading test device in an embodiment;

[0031] Figure 5 Another structural schematic diagram of two test units in a force sensor loading test device in an embodiment;

[0032] Figure 6 It is a schematic diagram of the structure of a lifting member and a loading member in an embodiment.

[0033] List of feature names corresponding to the reference numerals in the figure: 1. frame; 11. frame guide structure; 111. guide hole; 12. guide block; 13. guide rail; 14. push rod mounting seat; 15. workbench; 100. test unit; 2. force sensor fixing structure; 21. sensor fixing seat; 22. fastener; 3. weight; 4. loader; 41. loader guide structure; 411. guide column; 412. introduction structure; 4121. guide slope; 42. loading frame; 43. lifting shaft; 4 31. Reducer shaft section; 44. Loading member hole; 441. Force application surface; 45. Lifting rod; 46. Tray; 5. Lifting member; 51. Sliding block; 52. Lifting frame; 521. Bottom frame arm; 522. Top frame arm; 53. Lifting hole; 531. Expanding; 6. Power mechanism; 61. Push mechanism; 611. Movable rod; 62. Pulling member; 63. Reversing wheel; 64. Force transmission frame; 641. Vertical rod; 642. Push rod connecting plate; 643. Pulling member connecting plate; 7. Force sensor.

[0034] Explanation on the reference numerals in brackets in the drawings: In the reference numerals in brackets in the drawings, the features referred to by the reference numerals are both the features represented by the numbers in the brackets and the features represented by the numbers outside the brackets. DETAILED DESCRIPTION

[0035] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0036] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0037] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0038] In the current force sensor test, a set number of weights are selected and stacked on the weight plate to load the force sensor. For force sensors of different specifications, different numbers of weights are usually required for testing. When a large number of weights are used, the overall height is high after multiple weights are stacked together, so the space for installing the weights needs to be large enough to meet the placement requirements of the weights. In the current force sensor test, the force sensor is usually above the weights, so that the weight height is lower and the safety is better. In order to facilitate the loading and unloading of the force sensor, when the force sensor is not loaded, a power mechanism is usually installed at the bottom of the weight, and the weight is supported by the power mechanism. When the force sensor needs to be loaded, the weight is dropped by the power mechanism, so that the gravity of the weight acts on the force sensor to complete the loading of the force sensor. This loading method usually installs the force sensor at a higher position to make room for the installation of the power mechanism and weights below the force sensor. The force sensor is in a higher position and is not convenient for disassembly, which has a greater impact on the detection efficiency. The present application provides a new force sensor loading test device, which loads the force sensor through a new loading method, changes the way the power mechanism acts on the weight, does not need to be installed under the weight, reduces the height of the weight, and facilitates the operation of the force sensor.

[0039] In one embodiment, please refer to Figures 1 to 6, the force sensor loading test device includes a frame 1 and a test unit 100. In one embodiment, the number of the test units 100 can be any number of one, two or more than three. The test unit 100 includes a force sensor fixing structure 2, a loading member 4 for connecting a weight 3, a lifting member 5 for hanging the loading member 4, and a power mechanism 6 for providing power to the lifting member 5, wherein the power mechanism 6 and the force sensor fixing structure 2 are both arranged on the frame 1, and the force sensor fixing structure 2 is used to fix the force sensor 7. The loading member 4 is movably arranged on the frame 1, and the loading member 4 has a loading position and an unloading position in its movable stroke. The loading member 4 is used to load the force sensor 7 under test when it is in the loading position, and unload the force sensor 7 under test when it is in the unloading position.

[0040] The lifting member 5 is in transmission connection with the loading member 4, so that the loading member 4 can be switched between the loading position and the unloading position through the lifting member 5. When the lifting member 5 lifts the loading member 4, it is in the unloading position during loading; when the lifting member 5 puts down the loading member 4, the loading member 4 is in the loading position.

[0041] The force sensor loading test device lifts the loading member 4 through the lifting member 5. The power mechanism 6 can be arranged on one side or the upper side of the weight 3 in the horizontal direction to provide power to the lifting member 5. Compared with the current method of supporting the weight 3 with the power mechanism 6, the present application adopts the method of lifting the loading member 4 and the weight 3 with the lifting member 5. There is no need to support the power mechanism 6 at the bottom of the weight 3, which can reduce the height of the weight 3 and then reduce the installation height of the force sensor 7, making it convenient to disassemble the force sensor 7 during the test and improving the test efficiency.

[0042] In one embodiment, please refer to Figures 1 to 6 , the lifting member 5 is movably connected with the loading member 4. When the lifting member 5 puts down the loading member 4, the lifting member 5 is out of contact with the loading member 4. When the lifting member 5 lifts the loading member 4, the loading member 4 is in the unloading position. In this way, when the loading member 4 loads the force sensor 7, the influence of the lifting member 5 is small or even not affected by the lifting member 5. Similarly, in one embodiment, when the loading member 4 is in the loading position, the loading member 4 is out of contact with the frame 1. In this way, the loading member 4 can reduce or even not be affected by the frame 1, thereby improving the loading accuracy of the force sensor 7. In some other embodiments, when the accuracy of weight loading is not high, the lifting member 5 can also be fixedly connected to the loading member 4 or connected through a flexible member.

[0043] After the loading member 4 is separated from the lifting member 5, it is no longer constrained by the lifting member 5. Due to the difference and discreteness of the force sensor 7 to be measured, the weight 3 may sometimes swing slightly, and this swing may have a cumulative effect, so that the loading position of the loading member 4 on the force sensor 7 is offset. In order to reduce or even eliminate the deflection of the loading member 4 and enable the loading member 4 to be accurately reset to the unloading position, in one embodiment, please refer to Figure 3and Figure 6 , the loader 4 has a loader guide structure 41, and the frame 1 has a frame guide structure 11. The frame guide structure 11 is used to cooperate with the loader guide structure 41 to guide the movement of the loader 4. The loader guide structure 41 is out of contact with the frame guide structure 11 when the loader 4 is in the loading position, and cooperates with the frame guide structure 11 during the movement of the loader 4 from the loading position to the unloading position, guiding the loader 4 to reset to the unloading position. When the loader 4 is in the loading position, the loader guide structure 41 does not contact the frame guide structure 11, ensuring the loading accuracy of the loader 4 and the weight 3 on the force sensor 7. After the force sensor 7 is tested, when the loader 4 moves to the unloading position, the loader 4 is guided and cooperated with the frame guide structure 11 by the loader guide structure 41 to guide the loader 4 to reset. In this way, even if the loader 4 is offset when it is in the loading position, the offset will be corrected and eliminated under the action of the loader guide structure 41, ensuring that the loader 4 is at the force sensor 7 during the next test. By adopting the guide mechanism, the accuracy and repeatability of the test loading position are further improved.

[0044] Specifically, in one embodiment, please refer to Figure 3 and Figure 6 The loader guide structure 41 includes a guide column 411, and the frame guide structure 11 includes a guide hole 111 adapted to the guide column 411. In another embodiment, the frame guide structure 11 includes a guide column, and the loader guide structure 41 includes a guide hole adapted to the guide column.

[0045] When the loader 4 is in the loading position, the guide hole 111 is separated from the guide column 411 or there is a large enough gap between the guide column 411 and the wall of the guide hole 111 so that the two do not contact each other. During the process of resetting the loader 4 to the unloading position, the guide column 411 begins to contact and cooperate with the guide hole 111 to guide the movement of the loader 4.

[0046] It should be noted that the "guiding cooperation between the loader guide structure 41 and the rack guide structure 11 during the movement of the loader 4 from the loading position to the unloading position" described in the present application not only includes the continuous guiding cooperation between the loader guide structure 41 and the rack guide structure 11 during the movement of the loader 4 from the loading position to the unloading position, but also includes the start of guiding cooperation between the loader guide structure 41 and the rack guide structure 11 after the loader 4 leaves the loading position and continues to move for a certain distance.

[0047] In one embodiment, please refer to Figure 3 and Figure 6At least one of the loader guide structure 41 and the rack guide structure 11 has an introduction structure 412, and the introduction structure 412 guides the rack guide structure 11 to switch from a disengaged state to a guided matching state. The introduction structure 412 allows the loader 4 to have a larger offset.

[0048] In one embodiment, please refer to Figure 3 and Figure 6 When the loader 4 is at the loading position, the guide column 411 leaves the guide hole 111. When the loader 4 moves from the loading position to the unloading position, the guide column 411 is inserted into the guide hole 111. The introduction structure 412 includes a guide slope 4121 at one end of the guide column 411 inserted into the guide hole 111, and the guide slope 4121 guides the guide column 411 to insert into the guide hole 111. Through the guiding effect of the guide slope 4121, the axis deviation between the guide column 411 and the guide hole 111 can be corrected, so that the loader 4 is accurately reset to the unloading position.

[0049] In some other embodiments, the introduction structure can be that the opening at one end of the guide hole 111 for inserting the guide column 411 is flared, and the guide column 411 has a guide slope 4121; the introduction structure can also be that the opening at one end of the guide hole 111 for inserting the guide column 411 is flared, and the guide column 411 does not have a guide slope 4121.

[0050] Specifically, in one embodiment, please refer to Figure 3 and Figure 6 One end of the guide post 411 is tapered, and the guide slope 4121 is a tapered surface. In one embodiment, the opening of one end of the guide hole 111 for inserting the guide post 411 is a trumpet-shaped expansion.

[0051] In some other embodiments, in addition to the flaring at one end of the guide hole 111 and the guide slope 4121 at one end of the guide post 411, the introduction structure 412 may also be any other feasible method, for example, the guide hole 111 includes a large diameter hole section, a small diameter hole section and a variable diameter hole section in the middle, and the two ends of the variable diameter hole section are respectively connected to the large diameter hole section and the small diameter hole section, the large diameter hole section is for the guide post 411 to be inserted, and the small diameter hole section is used to guide and cooperate with the guide post 411 to guide the loader 4. When the guide post 411 is not in contact with the guide hole 111, the guide post 411 can be disengaged from the small diameter hole section without being disengaged from the large diameter hole section. At this time, the variable diameter hole section is the introduction structure 412, which guides the guide post 411 to enter the small diameter hole section and guide and cooperate with the small diameter hole section.

[0052] In one embodiment, please refer to Figure 3 and Figure 6The loading member 4 includes a loading frame 42, a guide column 411 is fixed on the loading frame 42, the frame 1 includes a guide block 12, and the guide hole 111 is located on the guide block 12. When the loading member 4 is in the loading position, the guide column 411 is located below the guide hole 111. The upper end of the guide column 411 is a tip, and the guide slope 4121 is located at the tip of the guide column 411.

[0053] In one embodiment, please refer to Figure 3 and Figure 5 In order to prevent the lifting member 5 from shaking, the lifting member 5 cooperates with the upper and lower guides of the frame 1 so that the frame 1 guides the lifting member 5 to move up and down. Through the guiding effect of the frame 1 on the lifting member 5, the power mechanism 6 can be accurately controlled to generate only vertical tension, avoiding the horizontal force component from causing the weight 3 to swing and affecting the test effect of the force sensor 7. By guiding the guide member 5 by the frame 1, the accuracy and repeatability of the test loading position can also be further improved.

[0054] Specifically, in one embodiment, please refer to Figures 3 to 5 A guide rail 13 is fixed on the frame 1, and the lifting member 5 includes a slider 51 that slidably cooperates with the guide rail 13, so that when the lifting member 5 moves up and down, it moves in a straight line under the restriction of the guide rail 13 and will not deflect. Specifically, in one embodiment, the lifting member 5 includes a lifting frame 52, and the slider 51 is fixed on the lifting frame 52. In some other embodiments, in addition to the cooperation form of the guide rail 13 and the slider 51, the frame 1 can also guide the lifting member 5 in the form of a guide column and a guide sleeve, for example, a guide column is fixed on the frame 1, a guide sleeve is fixed on the lifting member 5, and the guide sleeve is sleeved on the guide column.

[0055] In one embodiment, please refer to Figure 3 and Figure 4 , the lifting member 5 and the loading member 4 are movably connected through the shaft hole structure, and the shaft hole structure includes a lifting shaft 43 extending up and down and a lifting hole 53 extending up and down. When the loading member 4 is in the loading position, the lifting shaft 43 is out of contact with the lifting hole 53. When the loading member 4 is in the unloading position, the lifting shaft 43 and the opening of one end of the lifting hole 53 are stopped up and down, that is, the force of the lifting member 53 is transmitted from the opening of the lifting hole 53 to the lifting shaft 43 through the stop of the lifting shaft and the opening of one end of the lifting hole.

[0056] Further, in one embodiment, please refer to Figure 3 and Figure 6 The lifting hole 53 is located on the bottom frame arm 521 of the lifting frame 52, and the lifting shaft 43 passes through the lifting hole 53. The top frame arm 522 of the lifting frame 52 is connected to the power mechanism 6. The lifting frame 52 is convenient for connecting with the loading member 4, and is also convenient for connecting with the power structure.

[0057] Further, in one embodiment, please refer to Figure 3and Figure 6 The lifting hole 53 and the lifting shaft 43 have an opening for upper and lower stoppers 531, and the lifting shaft 43 includes a reducing shaft section 431. In the loading position, the reducing shaft section 431 is separated from the expanding opening 531; in the unloading position, the reducing shaft section 431 is at least partially in the expanding opening 531 and is in contact with the expanding opening 531, so that the lifting shaft 43 is coaxial with the lifting hole 53. The reducing shaft section 431 can make the coaxiality of the lifting shaft 43 and the lifting hole 53 higher, thereby improving the accuracy of the loading position.

[0058] Specifically, in one embodiment, please refer to Figure 3 and Figure 4 , the variable diameter shaft section 431 is at one end of the lifting shaft 43, and the opening of the lifting hole 53 is a bell mouth. The outer circumference of the variable diameter shaft section 431 matches the inner circumference of the flared opening 531. When the loading member 4 is in the unloading position, the outer circumference of the variable diameter shaft section 431 fits the inner circumference of the flared opening 531. In this way, when the lifting member 5 lifts the loading member 4, the outer circumference of the variable diameter shaft section 431 is blocked by the inner circumference of the flared opening 531. When the loading member 4 is in the loading position, the outer circumference of the variable diameter shaft section 431 is separated from the inner circumference of the flared opening 531. At this time, the lifting shaft 43 is no longer in contact with the lifting hole 53, so as to improve the loading accuracy of the force sensor 7.

[0059] Specifically, in one embodiment, please refer to Figure 3 and Figure 4 In some other embodiments, in addition to the variable diameter shaft section 431 and the loading member 4 being stopped up and down, a stop pin may be fixed on the lifting shaft 43, and the loading member 4 is lifted by the stop pin and the loading member 4 being stopped.

[0060] In some other embodiments, the lifting member 5 may adopt any other feasible manner besides the lifting frame 52, such as a lifting hook, a lifting plate, etc.

[0061] In one embodiment, please refer to Figure 3 and Figure 4 The loading member 4 has a loading member hole 44 for the force sensor 7 to extend horizontally therein, and the loading member hole 44 has a force application surface 441 that contacts the force sensor 7 and applies force to the force sensor 7 .

[0062] Specifically, in one embodiment, please refer to Figure 3 and Figure 4 The loading member 4 includes a loading frame 42, and the loading frame 42 surrounds a loading member hole 44. The loading member 4 includes a suspension rod 45 connected to the loading frame 42, one end of the suspension rod 45 is connected to the loading frame 42, and the other end is connected to a tray 46, and the tray 46 is used to carry the weight 3.

[0063] In one embodiment, please refer to Figure 3 and Figure 4 The power mechanism 6 includes a push mechanism 61, which is in transmission connection with the lifting member 5. The push mechanism 61 applies a force to the lifting member 5 so that the lifting member 5 lifts the loading member 4. The lifting member 5 is lifted by the push force, which greatly reduces the force requirement on the power mechanism 6.

[0064] Further, in one embodiment, please refer to Figures 3 to 5 The power mechanism 6 includes a driving mechanism, a pulling member 62 and a reversing wheel 63. The pulling member 62 is wound around the reversing wheel 63 to achieve reversal. The driving mechanism applies force to the lifting member 5 through the pulling member 62. The installation position of the power mechanism 6 can be changed as needed by the reversing wheel 63, and the height of the force sensor 7 can be greatly reduced. In one embodiment, the driving mechanism is a pushing mechanism 61.

[0065] In one embodiment, please refer to Figure 3 , the pulling member 62 is a transmission rope, a transmission belt or a transmission chain. In one embodiment, the number of the reversing wheels 63 is two groups, each group of reversing wheels 63 has two reversing wheels, and the two groups of reversing wheels 63 realize 180-degree reversal of the pulling member 62. In some other embodiments, the number of reversing wheels 63 and the reversing angle of the pulling member 62 can be set as needed. For example, the pushing mechanism 61 pushes horizontally, and only one group of reversing wheels 63 is set at this time, and the pulling member 62 is reversed 90 degrees through the reversing wheels 63. In some other embodiments, the driving mechanism can also be directly set above the pulling member 62, and the reversing wheels 63 are not needed at this time.

[0066] Specifically, in one embodiment, please refer to Figure 3 and Figure 4 The push mechanism 61 is an electric push rod, and the pulling member 62 is a transmission rope. The electric push rod transmits the force to the loading member 4 through the transmission rope to change the position of the loading member 4. In one embodiment, please refer to Figure 3 and Figure 4 , the movable rod 611 of the electric push rod moves up and down, the frame 1 includes a push rod mounting seat 14 for mounting the electric push rod, and the upper end of the electric push rod is hinged on the push rod mounting seat 14. The power mechanism 6 includes a force transmission frame 64, and the force transmission frame 64 includes a vertical rod 641 movably mounted on the push rod mounting seat 14, one end of the vertical rod 641 is connected to a push rod connecting plate 642, and the other end is connected to a pulling member connecting plate 643. The pulling member connecting plate 643 is connected to the pulling member 62, and the push rod connecting plate 642 is connected to the movable rod 611. There are two vertical rods 641, and the two vertical rods 641 are arranged in parallel and spaced apart.

[0067] When the movable rod 611 of the electric push rod extends downward, it can drive the pulling member 62 to lift the loading member 4. When the movable rod 611 of the electric push rod retracts upward, it can enable the pulling member 62 to put down the loading member 4.

[0068] In some other embodiments, the driving mechanism may use a hydraulic cylinder or a pneumatic cylinder in addition to the electric push rod, or a combination of a motor and a linear transmission mechanism, such as a motor and a lead screw nut mechanism.

[0069] In one embodiment, please refer to Figure 1 and Figure 2 , the number of the test units 100 is two. The specifications of the weights 3 corresponding to the two test units 100 may be the same or different. In some other embodiments, the number of the test unit 100 of the force sensor loading test device may be only one. Of course, it may also be other numbers of more than three.

[0070] In one embodiment, please refer to Figure 3 and Figure 4 The force sensor fixing structure 2 includes a sensor fixing seat 21 and a fastener 22. The fastener 22 is used to fix the force sensor 7 on the sensor fixing seat 21. In one embodiment, please refer to Figure 3 and Figure 4 The fastener 22 is a screw threadedly connected to the sensor fixing seat 21. In one embodiment, after the force sensor 7 is fixed to the sensor fixing seat 21, the portion to be loaded on the force sensor 7 is suspended on one side of the force sensor 7 fixing seat.

[0071] In one embodiment, please refer to Figure 1 The frame 1 includes a workbench 15 , and the force sensor fixing structure 2 is installed on the workbench 15 .

[0072] In one embodiment, please refer to Figures 1 to 6 , the test operation of the force sensor loading test device is as follows:

[0073] Put the target on the tray 46 of the loading part 4 and put the force sensor 7 to be tested on the sensor fixing seat 21, and fix the force sensor 7 by the fastener 22. Then start the push mechanism 61, retract the active rod 611 of the push mechanism 61, and the lifting part 5 puts down the loading part 4. After the loading part 4 is put down, the force sensor 7 is loaded. At this time, the parameter information of the force sensor 7 is collected. After the collection is completed, the active rod 611 of the push mechanism 61 is extended, and the lifting part 5 lifts the loading part 4 to complete the unloading of the force sensor 7. The loading part 4 is in the unloading position, and then the next force sensor 7 is replaced for testing.

[0074] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A force sensor loading test device, characterized in that: include: frame; A force sensor fixing structure, the force sensor fixing structure is arranged on the frame and is used to fix the force sensor; A loading member, the loading member is used to connect the weight; the loading member is movably arranged on the frame and has a loading position and an unloading position; The loading member is used to load the force sensor under test when it is in the loading position, and to unload the force sensor under test when it is in the unloading position; A lifting member, the lifting member is movably connected to the loading member, and the lifting member is used to lift and place the loading member so that the loading member can be switched between the loading position and the unloading position; When the lifting member puts down the loading member, the loading member is in a loading position and the lifting member is out of contact with the loading member; when the lifting member lifts up the loading member, the loading member is in an unloading position; and a power mechanism, wherein the power mechanism is arranged on the frame and is used to provide power to the lifting member.

2. The force sensor loading test device according to claim 1, characterized in that: The loader has a loader guide structure, and the frame has a frame guide structure, and the frame guide structure is used to cooperate with the loader guide structure to guide the movement of the loader; the loader guide structure is disengaged from the frame guide structure when the loader is in the loading position, and cooperates with the frame guide structure during the movement of the loader to the unloading position after leaving the loading position, so as to guide the loader to return to the unloading position.

3. The force sensor loading test device according to claim 2, characterized in that: The loader guide structure includes a guide hole, and the frame guide structure includes a guide column adapted to the guide hole, or the frame guide structure includes a guide hole, and the loader guide structure includes a guide column adapted to the guide hole; When the loader is at the loading position, the guide post leaves the guide hole; when the loader leaves the loading position and moves to the unloading position, the guide post is inserted into the guide hole; One end of the guide hole for inserting the guide post is a flared hole, the flared hole guides the guide post to be inserted into the guide hole, and / or one end of the guide post inserted into the guide hole has a guide slope, the guide slope guides the guide post to be inserted into the guide hole.

4. The force sensor loading test device according to claim 2, characterized in that: The loader guide structure and / or the rack guide structure have an introduction structure, and the introduction structure guides the rack guide structure to switch from a disengaged contact state to a guide matching state with the rack guide structure.

5. The force sensor loading test device according to any one of claims 1 to 4, characterized in that: The lifting member cooperates with the upper and lower guides of the frame so that the frame guides the lifting member to move up and down.

6. The force sensor loading test device according to any one of claims 1 to 4, characterized in that: The power mechanism comprises a driving mechanism, a pulling member and a reversing wheel. The pulling member is wound around the reversing wheel to achieve reversal. The driving mechanism applies force to the lifting member through the pulling member.

7. The force sensor loading test device according to any one of claims 1 to 4, characterized in that: The lifting member and the loading member are movably connected via an axial hole structure, and the axial hole structure includes a lifting shaft extending up and down and a lifting hole extending up and down; when the loading member is in the loading position, the lifting shaft is out of contact with the lifting hole; when the loading member is in the unloading position, the lifting shaft is engaged with the lifting hole by upper and lower stops.

8. The force sensor loading test device according to claim 7, characterized in that: The lifting hole and the opening that cooperates with the upper and lower stops of the lifting shaft are flared, and the lifting shaft includes a reducing shaft section; in the loading position, the reducing shaft section is separated from the flared opening; in the unloading position, the reducing shaft section is at least partially in the flared opening and is in positioning contact with the flared opening, so that the lifting shaft is coaxial with the lifting hole.

9. The force sensor loading test device according to any one of claims 1 to 4, characterized in that: When the loading member is in the loading position, the loading member is out of contact with the frame.

10. A force sensor loading test device, characterized in that: include: frame; A force sensor fixing structure, the force sensor fixing structure is arranged on the frame and is used to fix the force sensor; A loading member, the loading member is used to connect the weight; the loading member is movably arranged on the frame and has a loading position and an unloading position; The loading member is used to load the force sensor under test when it is in the loading position, and to unload the force sensor under test when it is in the unloading position; A lifting member, the lifting member is connected to the loading member, and the lifting member is used to lift the loading member so that the loading member can be switched between the loading position and the unloading position; When the lifting member lifts the loading member, the loading member is in the unloading position; when the lifting member puts down the loading member, the loading member is in the loading position; and a power mechanism, wherein the power mechanism is arranged on the frame and is used to provide power to the lifting member.

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