Weighing apparatus detection device

Abstract

The utility model discloses a weighing apparatus detection device. The weighing apparatus detection device comprises a reaction frame, a loading force area and a loading assembly, the reaction frame comprises a cross beam, and the cross beam moves along a first direction. The loading force area is arranged on one side of the cross beam along the first direction and is used for accommodating a detected weighing apparatus. The loading assembly is arranged in the loading force area and comprises a hydraulic cylinder, the hydraulic cylinder is installed on the cross beam and comprises a hydraulic push rod, and the hydraulic push rod is used for applying testing force to the detected weighing apparatus in the first direction. According to the weighing instrument detection device, the hydraulic cylinder is adopted to apply the test force to the detected weighing instrument in a progressive increase or progressive decrease mode, and the purpose of detecting the weighing instrument by gradually increasing or reducing the detection weights in the prior art is simulated. Therefore, repeated loading and unloading of weights to the detected weighing apparatus can be avoided, thereby improving the detection efficiency of the weighing apparatus.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement detection, in particular to a weighing instrument detection device. Background Art

[0002] Weighing instruments include automatic weighing instruments and non-automatic weighing instruments. Automatic weighing instruments refer to weighing instruments that can obtain weighing results without operator intervention during the weighing process. Such as: belt scales, dynamic track scales, etc.; non-automatic weighing instruments refer to weighing instruments that require operator operation to obtain weighing results during the weighing process. Such as: static truck scales, track scales, platform scales, hook scales, etc. At present, when testing the value of non-automatic weighing instruments, the method of loading standard weights is mostly used, and according to the requirements of the non-automatic weighing instrument testing process, the weighing instrument needs to be loaded to the maximum load during testing. Since the cumulative weight of the test weights of large weighing instruments can reach more than 3 tons, they need to be moved multiple times, which makes the weighing instrument testing process time-consuming and labor-intensive.

[0003] Therefore, how to improve the detection efficiency of weighing instruments has become a difficult problem that technical personnel in this field need to solve urgently. Utility Model Content

[0004] The utility model provides a weighing instrument detection device with high versatility, which is used for improving the detection efficiency of weighing instruments.

[0005] The utility model provides a weighing instrument detection device including a reaction frame, a loading force zone and a loading assembly, wherein: the reaction frame includes a crossbeam, the crossbeam moves along a first direction; the loading force zone is arranged on one side of the crossbeam along the first direction, and the loading force zone is used to accommodate a weighing instrument to be detected. It should be noted that in the utility model, the spatial size of the loading force zone can be changed by moving the crossbeam along the first direction, so that the weighing instrument detection device can be equipped with weighing instruments of different sizes to be detected.

[0006] The loading assembly is arranged in the loading force area, and the loading assembly includes a hydraulic cylinder, which is mounted on the crossbeam, and the hydraulic cylinder includes a hydraulic push rod, and the hydraulic push rod is used to apply a test force to the detected scale along a first direction. By using the hydraulic cylinder to apply the test force to the detected scale in an increasing or decreasing manner, the purpose of detecting the scale by gradually increasing or decreasing the test weight in the prior art can be simulated. In this way, repeated loading and unloading of weights to the detected scale can be avoided, thereby improving the detection efficiency of the scale.

[0007] It is worth mentioning that at least part of the reaction frame other than the crossbeam is fixed to the ground or the mounting platform. This can prevent the crossbeam from being lifted up due to the reaction force of the hydraulic push rod during the detection of the scale, thereby improving the stability of the hydraulic push rod in applying the detection force to the detected scale.

[0008] In a possible implementation of the present invention, the loading assembly further includes a magnetic block, which is disposed at one end of the hydraulic push rod away from the cross beam, and the magnetic block is connected to the hydraulic push rod. This is conducive to improving the stability of the connection between the scale detection device and the detected scale.

[0009] In a possible implementation of the utility model, the loading assembly includes a plurality of magnetic blocks and a plurality of hydraulic cylinders, and along the first direction, the plurality of magnetic blocks are arranged one by one at the ends of the plurality of hydraulic cylinder push rods away from the crossbeam. In this way, different force points can be selected for testing for scales of different structures, which is conducive to improving the uniformity of force on the scale during the testing process, thereby facilitating the improvement of the testing accuracy.

[0010] In a possible implementation of the present invention, the crossbeam is slidably connected to the support portion along a first direction, which is conducive to improving the stability of the crossbeam when it moves.

[0011] In a possible implementation of the utility model, the support portion includes a first support arm and a second support arm, the first support arm and the second support arm are arranged opposite to each other along the second direction, and at least a portion of the crossbeam is located between the first support arm and the second support arm; along the first direction, at least a portion of the crossbeam is slidably connected to the first support arm and the second support arm; the first direction is perpendicular to the second direction. By arranging at least a portion of the crossbeam between the first support arm and the second support arm, and making at least a portion of the crossbeam slidably connected to the first support arm and the second support arm, the stability of the crossbeam sliding along the first direction can be improved, and the purpose of changing the distance between the hydraulic push rod and the detected scale along the first direction can be achieved by making the crossbeam slide toward or away from the detected scale along the first direction.

[0012] In a possible implementation of the utility model, the first support arm includes a first slide rail arranged along a first direction, the second support arm includes a second slide rail arranged along the first direction; the crossbeam includes a first slide groove and a second slide groove, the first slide groove is arranged opposite to the first slide rail, and the first slide rail is plugged into the first slide groove; the second slide groove is arranged opposite to the second slide rail, and the second slide rail is plugged into the second slide groove. This is conducive to improving the smoothness of the crossbeam sliding along the first support arm and the second support arm, and reducing the risk of device detection distortion caused by crossbeam offset.

[0013] In a possible implementation of the utility model, the first support arm and the second support arm move toward or away from each other along the second direction. In this way, the size of the accommodation space of the loading force zone can be changed by adjusting the distance between the first support arm and the second support arm, thereby facilitating the versatility of the weighing instrument detection device.

[0014] In a possible implementation of the utility model, the weighing instrument detection device further includes a platform, and along the first direction, one end of the first support arm away from the cross beam is slidably connected to the platform, and one end of the second support arm away from the cross beam is slidably connected to the platform. This can improve the convenience of moving the weighing instrument detection device.

[0015] In a possible implementation of the utility model, the platform includes a third slide rail, and along the first direction, the third slide rail is arranged on the side of the platform close to the crossbeam; the first support arm includes a third slide slot, the third slide slot is arranged opposite to the third slide rail, and the third slide rail is plugged into the third slide slot; the second support arm includes a fourth slide slot, the fourth slide slot is arranged opposite to the third slide rail, and the third slide rail is plugged into the fourth slide slot. This is conducive to improving the smoothness of the first support arm and the second support arm moving on the platform along the second direction.

[0016] In a possible implementation of the utility model, the crossbeam is a telescopic rod, so that when the first support arm and the second support arm are moved along the second direction, the crossbeam can be synchronously extended or shortened, thereby adjusting the accommodation space of the loading force zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a weighing instrument detection device provided in an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of the connection between the weighing instrument detection device provided in the embodiment of the utility model and the weighing instrument to be detected;

[0019] Figure 3 A schematic diagram of a partial structure of a reaction frame provided by an embodiment of the utility model;

[0020] Figure 4 A schematic structural diagram of a cross-section of a reaction frame provided in an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the connection structure between the support arm and the platform provided in an embodiment of the utility model;

[0022] Figure 6 A schematic structural diagram of a crossbeam provided in an embodiment of the utility model.

[0023] Figure numerals: 1-reaction frame; 11-crossbeam; 111-first slide groove; 112-first threaded hole; 113-second threaded hole; 114-first support beam; 115-second support beam; 116-connecting portion; 1161-third threaded rod; 1162-fourth threaded rod; 1163-connecting nut; 12-supporting portion; 121-first support arm; 1211-first slide rail; 1212-first threaded rod; 1213-first nut; 1214-first limiting ring; 1215-first bearing; 1216-first support column; 121 7-first limit block; 1218-first mounting groove; 1219-third slide groove; 122-second support arm; 1221-second slide rail; 1222-second threaded rod; 1223-second nut; 1224-second limit ring; 1225-second bearing; 1226-second support column; 1227-second limit block; 1228-second mounting groove; 1229-fourth slide groove; 2-loading force area; 3-loading assembly; 31-hydraulic cylinder; 311-hydraulic push rod; 32-magnetic block; 4-bolt; 5-platform; 51-third slide rail. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Weighing instruments include automatic weighing instruments and non-automatic weighing instruments. Automatic weighing instruments refer to weighing instruments that can obtain weighing results without operator intervention during the weighing process, such as belt scales, dynamic track scales, etc. Non-automatic weighing instruments refer to weighing instruments that require operator intervention to obtain weighing results during the weighing process, such as static truck scales, track scales, platform scales, hook scales, etc.

[0026] At present, when testing the value of non-automatic weighing instruments, the method of loading standard weights is adopted. According to the requirements of JJF1834-2020 "General Technical Requirements for Non-automatic Weighing Instruments" and JJG539-2016 "Digital Indicating Scales" for loading weights during the testing process of non-automatic weighing instruments, it is necessary to add weights to the non-automatic weighing instrument from zero to the maximum weighing, and then unload the weights to zero in the same way. When measuring the initial inherent error, at least 10 different weighings should be selected. For other tests, at least 5 weighings should be selected. The selected weighings should include weighings close to the maximum weighing, the minimum weighing, and the maximum allowable error change. Note that when adding and unloading weights, the weights should be gradually increased or decreased, respectively.

[0027] Since the cumulative weight of the test weights of large scales can reach more than 3 tons, for example, an electronic truck scale with a maximum weighing capacity of 150 tons, when testing it, it is necessary to gradually increase the weight of the electronic truck scale until it reaches 150 tons, and then gradually reduce the weight. The testing process is labor-intensive and the actual testing work is time-consuming and labor-intensive.

[0028] In view of this, the weighing instrument detection device provided in the embodiment of the utility model uses a hydraulic cylinder to apply a test force to the weighing instrument to be detected in an increasing or decreasing manner, so as to simulate the purpose of detecting the weighing instrument by gradually increasing or decreasing the test weight in the prior art. In this way, it is possible to avoid repeated loading and unloading of weights to the weighing instrument to be detected, thereby improving the detection efficiency of the weighing instrument. The weighing instrument detection device provided in the embodiment of the utility model will be specifically described below in conjunction with the accompanying drawings.

[0029] refer to Figure 1 , Figure 1 A schematic diagram of the structure of a weighing instrument detection device provided for an embodiment of the utility model. In the utility model, the weighing instrument detection device includes a reaction frame 1, a loading force zone 2 and a loading assembly 3, wherein: the reaction frame 1 includes a crossbeam 11, and the crossbeam 11 moves along a first direction; the loading force zone 2 is arranged on one side of the crossbeam 11 along the first direction, and the loading force zone 2 is used to accommodate the weighing instrument to be detected. It should be noted that in the utility model, the spatial size of the loading force zone 2 can be changed by moving the crossbeam 11 along the first direction to adapt to weighing instruments of different sizes to be detected.

[0030] For the convenience of description, in the embodiment of the present invention, the first direction may be defined as the Z direction.

[0031] The loading assembly 3 is arranged in the loading force area 2, and the loading assembly 3 includes a hydraulic cylinder 31, which is installed on the crossbeam 11, and the hydraulic cylinder 31 includes a hydraulic push rod 311, and the hydraulic push rod 311 is used to apply a test force to the detected scale along a first direction. By using the hydraulic cylinder 31 to apply the test force to the detected scale in an increasing or decreasing manner, it is used to simulate the purpose of detecting the scale by gradually increasing or decreasing the test weight in the prior art. In this way, it is possible to avoid repeated loading and unloading of weights to the detected scale, thereby improving the detection efficiency of the scale.

[0032] It is worth mentioning that at least part of the reaction frame 1 except the crossbeam 11 is fixed to the ground or the mounting platform ( Figure 1 This can prevent the crossbeam 11 from being lifted up due to the reaction force of the hydraulic push rod 311 during the detection process of the weighing instrument, thereby preventing the hydraulic push rod 311 from applying the detection force to the weighing instrument being detected. When the weighing instrument detection device provided by the utility model is used to detect the weighing instrument, first, the weighing instrument being detected is placed in the loading force zone 2;

[0033] Then, the crossbeam 11 is moved along the Z direction toward the detected scale, so that the telescopic length of the hydraulic push rod 311 can meet the detection force requirement of the scale by adjusting the distance between the crossbeam 11 and the detected scale.

[0034] Secondly, the hydraulic cylinder 31 is started, and the hydraulic push rod 311 is connected to the sensor ( Figure 1 The hydraulic push rod 311 is connected along the Z direction and gradually moves toward the detected scale. At this time, the sensor displays the detection force value applied by the hydraulic push rod 311, and the detected scale displays the force value through the sensor connected to it.

[0035] Finally, as the hydraulic push rod 311 gradually approaches the detected scale along the Z direction, the detection force value of the scale gradually increases. When the test force value applied by the hydraulic push rod 311 to the detected scale unit by unit and the force value displayed by the detected scale meet the error standards specified in JJF1834-2020 "General Technical Requirements for Non-Automatic Scales" and JJG539-2016 "Digital Indicating Scales", the scale test is qualified. When the test force value applied by the hydraulic push rod 311 to the detected scale unit by unit and the force value displayed by the detected scale do not meet the error standards specified in JJF1834-2020 "General Technical Requirements for Non-Automatic Scales" and JJG539-2016 "Digital Indicating Scales", the scale test is unqualified.

[0036] It should be noted that in the present utility model, the numerical value of the detection force applied by the weighing instrument detection device complies with the detection requirements specified in JJF1834-2020 "General Technical Requirements for Non-automatic Weighing Instruments" and JJG539-2016 "Digital Indicating Scales".

[0037] Continue to refer Figure 1 In the present utility model, in order to increase the stability of the connection between the scale detection device and the detected scale, the loading assembly 3 also includes a magnetic block 32, which is arranged at one end of the hydraulic push rod 311 away from the beam 11, and the magnetic block 32 is connected to the hydraulic push rod 311.

[0038] It is worth mentioning that the magnetic block 32 can be an electromagnet. In this way, the magnetism of the electromagnet can be changed by changing the magnetic flux according to different detection requirements such as the weight of the detected scale to be adsorbed or whether to adsorb the detected scale.

[0039] It should be noted that the magnetic block 32 is fixedly connected to the hydraulic push rod 311. This can prevent the electromagnet from falling off the hydraulic push rod 311 when the electromagnet is not energized. In the present utility model, the fixed connection method of the magnetic block 32 and the hydraulic push rod 311 is not limited. Exemplarily, the magnetic block 32 can be connected to the hydraulic push rod 311 by bolts 4 or welding.

[0040] refer to Figure 2 , Figure 2 A schematic diagram of the structure of the connection between the weighing instrument detection device provided by the embodiment of the utility model and the weighing instrument to be detected. In order to increase the versatility of the weighing instrument detection device, in the utility model, the specific position where the electromagnet adsorbs the weighing instrument to be detected is not limited, and it can be adjusted according to the inspection specifications of different weighing instruments.

[0041] Exemplarily, the detected weighing instrument is a tank scale, which is a cylindrical electronic scale with a height usually greater than 3m, and is mainly used for quantitative packaging of large quantities of bulk materials. Since large tank scales cannot be moved at will, when testing the tank scale, it is necessary to move the weighing instrument detection device to the vicinity of the tank scale, and fix at least part of the reaction frame 1 except the crossbeam 11 to the ground. In order to be able to apply a detection force to the tank scale, the electromagnet can be adsorbed on the side wall of the tank scale, and the electromagnet is located between the crossbeam 11 and the sensor of the tank scale along a first direction, so that the electromagnet can be driven to move along the first direction by the hydraulic push rod 311 to achieve the purpose of applying a detection force to the tank scale.

[0042] In the utility model, in order to improve the uniformity of force applied to the tank scale being tested during the testing process, the loading assembly 3 includes a plurality of magnetic blocks 32 and a plurality of hydraulic cylinders 31, and along the first direction, the plurality of magnetic blocks 32 are arranged one by one at the end of the plurality of hydraulic push rods 311 away from the beam 11.

[0043] When the detection device is used to detect a tank scale, multiple magnetic blocks 32 can be evenly distributed on the side wall of the tank scale, and along the Z direction, the linear distance between each magnetic block 32 and the sensor of the detected scale is the same.

[0044] In addition, after the multiple magnetic blocks 32 are energized and adsorbed on the side wall of the tested scale, the multiple hydraulic push rods 311 drive the multiple magnetic blocks 32 to synchronously apply force along the Z direction to the side wall of the tank scale to improve the force uniformity of the tested scale.

[0045] It is worth mentioning that in the process of applying the detection force to the detected scale by multiple hydraulic push rods 311 at the same time, the sum of the detection forces applied by the multiple hydraulic push rods 311 can be compared with the sensor display value of the detected scale to obtain a reliable detection result.

[0046] Continue to refer Figure 1 In the present invention, in order to more conveniently move the cross beam 11 along the first direction, the reaction frame 1 further includes a support portion 12, and the cross beam 11 is slidably connected to the support portion 12 along the first direction.

[0047] When the support part 12 is specifically arranged, it may include a first support arm 121 and a second support arm 122. The first support arm 121 and the second support arm 122 are arranged opposite to each other along the second direction, and the first direction is perpendicular to the second direction. Figure 1 As shown, at least a portion of the cross beam 11 is located between the first support arm 121 and the second support arm 122. In addition, at least a portion of the cross beam 11, the first support arm 121 and the second support arm 122 enclose a loading force area 2.

[0048] In the present invention, at least a portion of the crossbeam 11 is slidably connected to the first support arm 121 and the second support arm 122. This can improve the stability of the crossbeam 11 sliding along the first direction, and by sliding the crossbeam 11 toward or away from the detected scale along the first direction, the distance between the hydraulic push rod 311 and the detected scale along the first direction can be changed.

[0049] For the convenience of description, in the embodiment of the present invention, the second direction may be defined as an X direction.

[0050] It should be noted that, in the present invention, the shapes of the first support arm 121 and the second support arm 122 are not limited. Exemplarily, the first support arm 1211 and the second support arm 122 are rectangular columns or cylindrical columns.

[0051] In the present invention, the length direction of the cross beam 11 can be set along the second direction, so that the cross beam 11 is perpendicular to the first support arm 121 and the second support arm 122. This facilitates the arrangement of the hydraulic cylinder 31 on the cross beam and ensures that the force direction of the hydraulic push rod 311 is along the first direction.

[0052] Continue to refer Figure 1 In the present invention, the first support arm 121 includes a first slide rail 1211 arranged along the first direction, and the second support arm 122 includes a second slide rail 1221 arranged along the first direction; the crossbeam 11 includes a first slide groove 111 and a second slide groove ( Figure 1 (not shown), the first slide groove 111 is arranged opposite to the first slide rail 1211, and the first slide rail 1211 is inserted into the first slide groove 111; the second slide groove is arranged opposite to the second slide rail 1221, and the second slide rail 1221 is inserted into the second slide groove. This is conducive to the smoothness of the lifting beam 11 sliding along the first support arm 121 and the second support arm 122.

[0053] In the present invention, the first slide rail 1211 and the second slide rail 1221 are both in the shape of an I, and the first slide groove 111 and the second slide groove arranged opposite thereto are T-shaped slide grooves. When the crossbeam 11 is assembled with the first support arm 121 and the second support arm 122, the first slide groove 111 is inserted into the second slide rail 1221 along one side of the first support arm 121, and the second slide groove is inserted into the third slide rail 51 along one side of the second support arm 122.

[0054] It is worth mentioning that when the beam 11 slides to the set position along the first support arm 121 and the second support arm 122, the sliding position of the beam 11 can be limited by connecting the bolt 4 with the first support arm 121 and the second support arm 122, so that the beam 11 can stay stably in the set position, which is beneficial to improving the stability of the detection force applied by the weighing instrument detection device, thereby helping to improve the detection accuracy of the weighing instrument detection device.

[0055] In addition to the above-mentioned method of sliding along the support arm, the cross beam 11 can also adopt other possible configuration methods. For example, refer to Figure 3 , Figure 3 A schematic diagram of a partial structure of a reaction frame provided by an embodiment of the utility model. The first support arm 121 includes a first threaded rod 1212, a first nut 1213, a first limiting ring 1214 and a first support column 1215, the first nut 1213 is arranged at one end of the first support column 1215 close to the crossbeam 11 along the first direction, and the first limiting ring 1214 is located between the first nut 1213 and the first support column 1215 along the first direction;

[0056] refer to Figure 4 , Figure 4 The first support arm 121 further comprises a first bearing 1216 , which is rotatably sleeved on the outer side wall of the first limiting ring 1214 , and the outer ring of the first bearing 1216 is connected to the first nut 1213 .

[0057] The first threaded rod 1212 includes a first limit block 1217, which is arranged along the first direction at the end of the first threaded rod 1212 away from the beam 11, and along the first direction, the first limit block 1217 is located between the first limit ring 1214 and the first support column 1215; the first limit ring 1214 includes a first mounting groove 1218, which is arranged along the first direction at the end away from the beam 11, and the first mounting groove 1218 is used to accommodate the first limit block 1217.

[0058] Continue to refer Figure 3The second support arm 122 includes a second threaded rod 1222, a second nut 1223, a second limiting ring 1224 and a second support column 1225. The second nut 1223 is arranged at one end of the second support column 1225 close to the crossbeam 11 along the second direction, and the second limiting ring 1224 is located between the second nut 1223 and the second support column 1225 along the second direction.

[0059] Continue to refer Figure 4 The second support arm 122 also includes a second bearing 1226 , which is rotatably sleeved on the outer wall of the second limiting ring 1224 , and the outer ring of the second bearing 1226 is connected to the second nut 1223 .

[0060] The second threaded rod 1222 includes a second limit block 1227, which is arranged at the end of the second threaded rod away from the beam 11 along the second direction, and along the second direction, the second limit block 1227 is located between the second limit ring 1224 and the second support column 1225; the second limit ring 1224 includes a second mounting groove 1228, and the second mounting groove 1228 is arranged at the end away from the beam 11 along the first direction, and the second mounting groove 1228 is used to accommodate the second limit block 1227.

[0061] Continue to refer Figure 3 The crossbeam 11 includes a first threaded hole 112 and a second threaded hole 113. The first threaded rod 1212 is arranged opposite to the first threaded hole 112 along the first direction, and the first threaded rod 1212 is threadedly connected to the first threaded hole 112; the second threaded rod 1222 is arranged opposite to the second threaded hole 113 along the first direction, and the second threaded rod 1222 is threadedly connected to the second threaded hole 113.

[0062] It should be noted that the first limiting ring 1214 is fixedly connected to the first support column 1215, and the second limiting ring 1224 is fixedly connected to the second support column 1225. For example, the first limiting ring 1214 and the first support column 1215 can be fixed by welding, and the second limiting ring 1224 and the second support column 1225 can be fixed by welding.

[0063] With the above design, when adjusting the position of the crossbeam 11 relative to the two support arms, first, the first nut 1213 and the second nut 1223 are rotated simultaneously, along the Z direction, the first limit block 1217 and the first limit ring 1214 limit the first threaded rod 1212, and the second limit block 1227 and the second limit ring 1224 limit the second threaded rod 1222. Therefore, when the first nut 1213 and the second nut 1223 are rotated, the first threaded rod 1212 and the second threaded rod 1222 both rotate along their own axes, but do not move along the Z direction, thereby causing the crossbeam 11 to move toward or away from the detected weighing instrument along the Z direction.

[0064] Secondly, the detected weighing instrument is placed in the loading force area 2, and then the height of the crossbeam 11 is adjusted along the Z direction until the hydraulic push rod 311 can contact the detected weighing instrument.

[0065] Finally, start testing the scale.

[0066] Continue to refer Figure 1 In the present invention, the weighing instrument detection device further comprises a platform 5, which is arranged opposite to the cross beam along the first direction; in the present invention, the spacing between the first support arm 121 and the second support arm 122 along the second direction is adjustable. In specific implementation, the end of the first support arm 121 away from the cross beam 11 is slidably connected to the platform 5, and the end of the second support arm 122 away from the cross beam 11 is slidably connected to the platform 5. This can improve the versatility of the weighing instrument detection device.

[0067] When the above method is used to detect a weighing instrument, for small weighing instruments, such as electronic scales, analog indicating scales and flat scales, the weighing instrument can be placed on the plate surface of the platform 5 close to the side of the beam 11 along the Z direction, and the beam 11 is moved until the hydraulic push rod 311 is close to the weighing instrument to be detected. Since the side of the weighing instrument to be detected that contacts the platform 5 abuts against the platform 5, and the side of the hydraulic cylinder 31 that is away from the platform 5 abuts against the beam 11, as the hydraulic push rod 311 moves toward the weighing instrument to be detected, the reaction frame 1 will not be lifted up due to the reaction force of the hydraulic push rod 311 along the Z direction, and the weighing instrument detection device as a whole remains balanced. This also improves the convenience of the overall movement of the device.

[0068] refer to Figure 5 , Figure 5 A schematic diagram of the connection structure between the support arm and the platform provided in an embodiment of the utility model. In the utility model, the platform 5 includes a third slide rail 51, and along the first direction, the third slide rail 51 is arranged on the side of the platform 5 close to the crossbeam 11; the first support arm 121 includes a third slide groove 1219, the third slide groove 1219 is arranged opposite to the third slide rail 51, and the third slide rail 51 is plugged into the third slide groove 1219; the second support arm 122 includes a fourth slide groove 1229, the fourth slide groove 1229 is arranged opposite to the third slide rail 51, and the third slide rail 51 is plugged into the fourth slide groove 1229. In this way, the first support arm 121 and the second support arm 122 can move more smoothly on the platform 5 along the second direction.

[0069] In the present invention, the third slide rail 51 is in the shape of an "I" character, and the third slide groove 1219 and the fourth slide groove 1229 arranged opposite thereto are in the shape of an "I" character. When the first support arm 121 and the platform 5 and the second support arm 122 and the platform 5 are assembled, the third slide groove 1219 and the fourth slide groove 1229 are inserted into the third slide rail 51 along one side of the platform 5, and then the third slide rail 51 is respectively engaged with the third slide groove 1219 and the fourth slide groove 1229 along the first direction, so as to reduce the risk of the reaction frame 1 being lifted up as a whole due to the reaction force of the hydraulic push rod 311 along the first direction on the cross beam 11 during the detection of the weighing instrument.

[0070] In a possible embodiment of the present invention, the cross beam 11 is a telescopic rod, so that when the first support arm 121 and the second support arm 122 are moved along the second direction, the cross beam 11 can be synchronously extended or shortened, thereby adjusting the accommodation space of the loading force zone.

[0071] In other feasible implementations, the crossbeam 11 may also be adjusted in length in other possible ways. Figure 6 , Figure 6 A schematic diagram of the structure of a crossbeam provided in an embodiment of the utility model. The crossbeam 11 comprises a first support beam 114, a second support beam 115 and a connecting portion 116, wherein the connecting portion 116 is disposed between the first support beam 114 and the second support beam 115 along the second direction, and the connecting portion 116 is threadedly connected to the first support beam 114 on one side along the second direction, and is threadedly connected to the second support beam 115 on the other side.

[0072] The connecting portion 116 includes a third threaded rod 1161 and a fourth threaded rod 1162. The third threaded rod 1161 is threadedly connected to the first support beam 114 along the second direction, and the fourth threaded rod 1162 is threadedly connected to the second support beam 115 along the second direction. The thread rotation direction of the third threaded rod 1161 is opposite to that of the fourth threaded rod 1162.

[0073] It is worth mentioning that the connection portion 116 further includes a connection nut 1163, which is disposed between the third threaded rod 1161 and the fourth threaded rod 1162 along the second direction, and the connection nut 1163 is fixedly connected to the third threaded rod 1161, and the connection nut 1163 is fixedly connected to the fourth threaded rod 1162. By providing the connection nut 1163, it is convenient to apply a torsional force to the entire connection portion 116, thereby driving the third threaded rod 1161 and the fourth threaded rod 1162 to rotate synchronously, thereby facilitating the rotation convenience of the third threaded rod 1161 and the fourth threaded rod 1162.

[0074] When the length of the crossbeam 11 is adjusted in the above manner, first, the connecting nut 1163 is rotated, and the third threaded rod 1161 and the fourth threaded rod 1162 are rotated synchronously, and at this time, the first support beam 114 and the second support beam 115 move toward or away from the connecting nut 1163 along the X direction. Then, the first support arm 121 and the second support arm 122 move toward or away from each other along the X direction.

[0075] Secondly, since one end of the beam 11 along the X direction is connected to the first support arm 121 and the other end is connected to the second support arm 122, the distance between the first support arm 121 and the second support arm 122 along the X direction can be changed by changing the length of the beam 11, and then the detected scale is placed in the loading force zone 2.

[0076] Finally, the crossbeam 11 is moved along the Z direction until the hydraulic cylinder push rod 311 contacts the weighing instrument to be tested, and then the testing of the weighing instrument begins.

[0077] In the weighing instrument detection device provided by the utility model, a hydraulic cylinder is used to apply a test force to the weighing instrument to be detected in an increasing or decreasing manner, so as to simulate the prior art of gradually increasing or decreasing the test weight to achieve the purpose of detecting the weighing instrument. In this way, repeated loading and unloading of weights to the weighing instrument to be detected can be avoided, thereby improving the detection efficiency of the weighing instrument.

[0078] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A weighing instrument detection device, characterized in that: It includes a reaction frame, a loading force area and a loading component, wherein: The reaction frame includes a crossbeam, and the crossbeam moves along a first direction; The loading force area is arranged on one side of the crossbeam along the first direction, and the loading force area is used to accommodate the detected weighing instrument; The loading assembly is arranged in the loading force area, and the loading assembly includes a hydraulic cylinder, the hydraulic cylinder is installed on the crossbeam, and the hydraulic cylinder includes a hydraulic push rod, and the hydraulic push rod is used to apply a test force to the detected scale along the first direction.

2. The weighing instrument detection device according to claim 1, characterized in that: The loading assembly further comprises a magnetic block, which is arranged at one end of the hydraulic push rod away from the cross beam, and the magnetic block is connected to the hydraulic push rod.

3. The weighing instrument detection device according to claim 2, characterized in that: The loading assembly includes a plurality of magnetic blocks and a plurality of hydraulic cylinders, and along the first direction, the plurality of magnetic blocks are arranged one by one at the ends of the plurality of hydraulic cylinder push rods away from the crossbeam.

4. The weighing instrument detection device according to claim 1, characterized in that: The reaction frame further includes a support portion, and the crossbeam is slidably connected to the support portion along the first direction.

5. The weighing instrument detection device according to claim 4, characterized in that: The support portion comprises a first support arm and a second support arm, the first support arm and the second support arm are arranged opposite to each other along a second direction, and at least a portion of the crossbeam is located between the first support arm and the second support arm; Along the first direction, at least a portion of the crossbeam is slidably connected to the first support arm and the second support arm; the first direction is perpendicular to the second direction.

6. The weighing instrument detection device according to claim 5, characterized in that: The first support arm includes a first slide rail arranged along the first direction, and the second support arm includes a second slide rail arranged along the first direction; The crossbeam includes a first slide groove and a second slide groove, the first slide groove is arranged opposite to the first slide rail, and the first slide rail is inserted into the first slide groove; the second slide groove is arranged opposite to the second slide rail, and the second slide rail is inserted into the second slide groove.

7. The weighing instrument detection device according to claim 5, characterized in that: Along the second direction, the first supporting arm and the second supporting arm move toward or away from each other.

8. The weighing instrument detection device according to claim 7, characterized in that: The weighing instrument detection device also includes a platform. Along the first direction, one end of the first support arm away from the cross beam is slidably connected to the platform, and one end of the second support arm away from the cross beam is slidably connected to the platform.

9. The weighing instrument detection device according to claim 8, characterized in that: The platform includes a third slide rail, and along the first direction, the third slide rail is arranged on a side of the platform close to the crossbeam; The first support arm includes a third slide groove, the third slide groove is arranged opposite to the third slide rail, and the third slide rail is inserted into the third slide groove; the second support arm includes a fourth slide groove, the fourth slide groove is arranged opposite to the third slide rail, and the third slide rail is inserted into the fourth slide groove.

10. The weighing instrument detection device according to any one of claims 5 to 9, characterized in that: The crossbeam is a telescopic rod.

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