Vehicle body weighing device

Abstract

The invention provides a vehicle body weighing device, and relates to the technical field of locomotive measurement. The vehicle body weighing device comprises a supporting mechanism and a weighing mechanism, the supporting mechanism comprises a first lifting driving source and a supporting body, and the output end of the first lifting driving source is connected to the supporting body; the weighing mechanism comprises a weighing assembly, the weighing assembly comprises a second lifting driving source, a weighing sensor and a lifting part, and the second lifting driving source can be connected to the lifting part through the weighing sensor; wherein the first lifting driving source can drive a to-be-detected vehicle body to move along a first direction and towards a direction close to the lifting piece through the supporting body, so that the lifting piece can bear a secondary supporting surface of the to-be-detected vehicle body, and the weighing sensor can detect the actual weight of the to-be-detected vehicle body; the second lifting driving source can drive the lifting part to move in the first direction and the direction facing the to-be-detected vehicle body through the weighing sensor and is used for simulating pad adding operation so as to level the secondary supporting face of the to-be-detected vehicle body.

Description

Technical Field

[0001] The present invention generally relates to the field of locomotive measurement technology, and in particular to a vehicle body weighing device. Background Art

[0002] When existing locomotives are installed or need to be replaced, the car body weighing equipment is needed to weigh the secondary support surface of the car body above the same bogie as a weighing point. According to the different values ​​of different weighing points, the car body is lifted by a jack and padded through a weighing adapter to level the secondary support surface of the car body. Since the weighing process requires the cooperation of multiple people to complete the padding adjustment process of multiple cars, it is time-consuming and laborious. At the same time, the position where the car body falls cannot be guaranteed to be consistent with the last position, so that the weighing data and the padding amount cannot be perfectly matched, there is a deviation between the measured data and the actual value, and there is a deviation between the padding amount and the actual demand, resulting in multiple tests required to complete the car body weighing operation, affecting the weighing accuracy. Summary of the invention

[0003] The vehicle body weighing device provided by the present invention can simulate the padding amount and improve the weighing accuracy.

[0004] According to a first aspect of the present invention, there is provided a vehicle body weighing device, comprising:

[0005] A support mechanism, the support mechanism comprising a first lifting drive source and a support body, the output end of the first lifting drive source is connected to the support body, and the support body is used to carry a vehicle body to be detected;

[0006] A weighing mechanism is arranged at a distance from the supporting mechanism, the weighing mechanism includes a weighing assembly, the weighing assembly includes a second lifting drive source, a weighing sensor and a lifting member, the second lifting drive source can be connected to the lifting member through the weighing sensor, and the lifting member is used to carry the vehicle body to be detected;

[0007] The first lifting driving source can drive the vehicle body to be detected to move along the first direction and towards the lifting member through the supporting body, so that the lifting member can bear the secondary supporting surface of the vehicle body to be detected, so that the weighing sensor can detect the actual weight of the vehicle body to be detected;

[0008] The second lifting drive source can drive the lifting member to move along a first direction toward the vehicle body to be detected through the weighing sensor, so as to simulate a padding operation to level the secondary support surface of the vehicle body to be detected.

[0009] In some embodiments, the support mechanism further includes a support base and an adjusting member, wherein the adjusting member is located between the support base and the first lifting drive source and is detachably connected thereto, and the height of the adjusting member along the first direction is adjustable.

[0010] In some embodiments, the weighing mechanism further includes a weighing base and an adjusting component, wherein the adjusting component is disposed between the weighing base and the weighing component, and the adjusting component is used to adjust the position of the weighing component relative to the weighing base along the second direction and / or the third direction;

[0011] The first direction, the second direction and the third direction are perpendicular to each other.

[0012] In some embodiments, there are multiple adjusting components and multiple weighing components, and multiple adjusting components are disposed on the weighing base and correspondingly connected to multiple weighing components.

[0013] In some embodiments, there are multiple supporting mechanisms and weighing mechanisms, and each supporting mechanism corresponds to at least one weighing mechanism.

[0014] In some embodiments, the weighing assembly further comprises:

[0015] A guide sleeve, provided on the second lifting drive source, the lifting member is passed through the guide sleeve and slidably cooperates with the guide sleeve;

[0016] Wherein, the guide sleeve, the output end of the second lifting drive source, the weighing sensor and the lifting member are coaxially arranged.

[0017] In some of the embodiments, the weighing mechanism further comprises a leveling component, wherein the leveling component is disposed on the guide sleeve, and the leveling component is used to adjust the horizontality of the lifting members in the plurality of weighing mechanisms.

[0018] In some embodiments, the leveling assembly includes:

[0019] A leveling box, located below the water tank along the first direction and connected to the water tank through a connecting pipe;

[0020] The distance measuring sensor is located above the leveling box along the first direction and is used to detect the height of the liquid level in the leveling box.

[0021] In some of the embodiments, a calibration component is further included, wherein the calibration component is detachably connected to the guide sleeve, and the calibration component is used to calibrate the weighing sensor.

[0022] In some embodiments, the calibration component includes:

[0023] A calibration sleeve, wherein one end of the calibration sleeve along the first direction is provided with an open end, the open end is arranged toward the lifting member, the calibration sleeve is sleeved on the outside of the lifting member and the weighing sensor and is detachably connected to the guide sleeve;

[0024] An elastic member, disposed in the calibration sleeve;

[0025] A calibration sensor, disposed in the calibration sleeve and abutting against the elastic member;

[0026] A display, disposed outside the calibration sleeve and electrically connected to the calibration sensor;

[0027] Wherein, the second lifting drive source can drive the lifting member to move along the first direction and toward the calibration sleeve through the weighing sensor, so that the lifting member abuts against the calibration sensor to calibrate the weighing sensor through the calibration sensor.

[0028] An embodiment of the present invention has the following advantages or beneficial effects:

[0029] The vehicle body weighing device provided by the embodiment of the present invention can be considered as the real weight of the vehicle body to be detected if the actual weight of the vehicle body to be detected detected by the weighing sensor is within the preset weight range. If the actual weight of the vehicle body to be detected detected by the weighing sensor is not within the preset weight range, exemplarily, the actual weight is less than the preset weight, which means that there may be a certain gap between the secondary support surface of the vehicle body to be detected and the lifting member, resulting in the weight of the vehicle body to be detected not being completely pressed on the lifting member. Then, the second lifting drive source can drive the lifting member to move along the first direction and toward the vehicle body to be detected through the weighing sensor, so as to simulate the padding operation to level the secondary support surface of the vehicle body to be detected. Specifically, according to the rising amount of the second lifting drive source along the first direction, the rising amount can be converted into the number of gaskets, and gaskets can be added to the secondary support surface of the vehicle body to be detected accordingly, so as to ensure the overall flatness of the secondary support surface of the vehicle body to be detected, so as to achieve the purpose of leveling.

[0030] The support mechanism and the weighing mechanism are arranged at intervals, and together they form a weighing point of the secondary support surface of the vehicle body to be tested, which can be consistent with the actual weight distribution of the vehicle body to be tested, so as to simulate the actual stress state of the vehicle body to be tested. The lifting member is driven to move by the second lifting drive source to realize the weighing simulation and padding adjustment process of the vehicle body to be tested, so as to solve the problem of relative displacement between the vehicle body to be tested and the weighing adapter after multiple lifting and padding by the jack, reduce system errors, and improve the surface flatness of the secondary support surface of the vehicle body to be tested. In addition, direct lifting and lowering using the second lifting drive source is simpler and faster than the existing padding method, which improves the weighing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to better understand the present invention, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present invention. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. The above and other features and advantages of the present invention will become more apparent by describing in detail its exemplary embodiments with reference to the drawings.

[0032] in:

[0033] Figure 1 The front view of the vehicle weighing device according to one embodiment of the present invention is shown. Figure 1 ;

[0034] Figure 2 The figure shows a top view of a vehicle body weighing device according to an embodiment of the present invention. Figure 1 ;

[0035] Figure 3 The front view of the vehicle weighing device according to one embodiment of the present invention is shown. Figure 2 ;

[0036] Figure 4 The figure shows a top view of a vehicle body weighing device according to an embodiment of the present invention. Figure 2 ;

[0037] Figure 5 The figure shows a schematic diagram of the structure of a support mechanism in a vehicle body weighing device according to an embodiment of the present invention;

[0038] Figure 6 The figure shows a schematic diagram of the structure of the adjusting member in the vehicle body weighing device according to one embodiment of the present invention;

[0039] Figure 7 The figure shows a schematic structural diagram of a support base in a vehicle body weighing device according to an embodiment of the present invention;

[0040] Figure 8 The figure shows the structure of the weighing mechanism in the vehicle weighing device according to one embodiment of the present invention. Figure 1 ;

[0041] Fig. 9 The figure shows the structure of the weighing assembly in the vehicle weighing device according to one embodiment of the present invention. Figure 1 ;

[0042] Fig.10 The figure shows the structure of the weighing assembly in the vehicle weighing device according to one embodiment of the present invention. Figure 2 ;

[0043] Fig.11 The figure shows the structure of the weighing assembly in the vehicle weighing device according to one embodiment of the present invention. Figure 3 ;

[0044] Fig.12 The figure shows the structure of the weighing assembly in the vehicle weighing device according to one embodiment of the present invention. Figure 4 ;

[0045] Fig.13 The figure shows the structure of the weighing assembly in the vehicle weighing device according to one embodiment of the present invention. Figure 5 ;

[0046] Fig.14 The figure shows the structure of the leveling box in the vehicle weighing device according to one embodiment of the present invention. Figure 5 ;

[0047] Fig.15 The figure shows the structure of the weighing mechanism in the vehicle weighing device according to one embodiment of the present invention. Figure 2 ;

[0048] Fig.16 Shown is a schematic structural diagram of a calibration component in a vehicle body weighing device according to an embodiment of the present invention.

[0049] The reference numerals are described as follows:

[0050] 100. Vehicle body to be tested;

[0051] 1. Support mechanism; 2. Weighing mechanism; 3. Base; 4. Calibration component;

[0052] 11. First lifting drive source; 12. Support body; 13. Support base; 14. Adjustment member;

[0053] 20. Weighing base; 21. Weighing assembly; 211. Second lifting drive source; 212. Weighing sensor; 213. Lifting member; 214. Guide sleeve;

[0054] 22. Adjustment components;

[0055] 23. Leveling assembly; 231. Leveling box; 232. Distance sensor;

[0056] 41. Calibration sleeve; 42. Elastic member; 43. Calibration sensor; 44. Mounting seat. DETAILED DESCRIPTION

[0057] The following will be combined with the accompanying drawings in the exemplary embodiments of the present invention to clearly and completely describe the technical solutions in the exemplary embodiments of the present invention. The exemplary embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of the present invention.

[0058] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0059] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limiting the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", "inner", "outer", but also can be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0061] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0062] This embodiment provides a vehicle body weighing device, such as Figure 1-Figure 8 As shown, the vehicle body weighing device includes a base 3, a support mechanism 1 and a weighing mechanism 2. The base 3 is made of cast steel and is fixed on a cement base through structures such as wedge irons and top screws to adjust the flatness of the base 3 within ±0.5 mm. The base 3 is a mounting platform, and the support mechanism 1 and the weighing mechanism 2 are arranged on the base 3. The base 3 plays a supporting role and keeps the two mechanisms on the same mounting plane.

[0063] like Figure 5-Figure 7 As shown, the support mechanism 1 can also be called a support pier, and the support mechanism 1 includes a first lifting drive source 11 and a support body 12. The output end of the first lifting drive source 11 is connected to the support body 12. The first lifting drive source 11 can drive the support body 12 to perform lifting movement along a first direction. The support body 12 is used to carry the vehicle body 100 to be detected. The first direction is specifically a vertical direction, and the vehicle body 100 to be detected can be a locomotive.

[0064] like Figure 8-Figure 12 As shown, the weighing mechanism 2 can also be called a measuring pier. The weighing mechanism 2 is spaced apart from the supporting mechanism 1. The weighing mechanism 2 includes a weighing assembly 21. The weighing assembly 21 includes a second lifting drive source 211, a weighing sensor 212 and a lifting piece 213. The second lifting drive source 211 can be connected to the lifting piece 213 through the weighing sensor 212. The second lifting drive source 211 can drive the lifting piece 213 to perform lifting movement along a first direction through the weighing sensor 212. The lifting piece 213 is used to carry the vehicle body 100 to be inspected.

[0065] Among them, the first lifting drive source 11 drives the support body 12 to move along the first direction and towards the direction of the vehicle body 100 to be inspected, so as to support the vehicle body 100 to be inspected. Then the first lifting drive source 11 can drive the vehicle body 100 to be inspected to move along the first direction and towards the direction close to the lifting member 213 through the support body 12, so that the lifting member 213 can support the secondary support surface of the vehicle body 100 to be inspected.

[0066] When the vehicle body 100 to be detected is weighed, under the gravity of the vehicle body 100 to be detected, the weighing sensor 212 and the piston of the second lifting drive source 211 are lowered together along the first direction. When weighing, the weight of the vehicle body 100 to be detected is transmitted to the weighing sensor 212 through the lifting member 213, so that the weighing sensor 212 can detect the weight of the vehicle body 100 to be detected. The weighing sensor 212 converts the 0-20mA electrical signal into a digital signal through a transmitter and transmits it to the host computer, and converts it into corresponding displacement and pressure data to be displayed on the interactive interface.

[0067] If the actual weight of the vehicle body 100 to be detected detected by the weighing sensor 212 is within the preset weight range, the actual weight can be considered as the real weight of the vehicle body 100 to be detected. If the actual weight of the vehicle body 100 to be detected detected by the weighing sensor 212 is not within the preset weight range, illustratively, the actual weight is less than the preset weight, which means that there may be a certain gap between the secondary support surface of the vehicle body 100 to be detected and the lifting member 213, resulting in the weight of the vehicle body 100 to be detected not being completely pressed on the lifting member 213, then the second lifting drive source 211 can drive the lifting member 213 to move along the first direction and toward the vehicle body 100 to be detected through the weighing sensor 212, so as to simulate the padding operation to level the secondary support surface of the vehicle body 100 to be detected. Specifically, according to the rising amount of the second lifting drive source 211 along the first direction, the rising amount can be converted into the number of gaskets, and gaskets are added accordingly on the secondary support surface of the vehicle body 100 to be inspected, thereby ensuring the overall flatness of the secondary support surface of the vehicle body 100 to be inspected to achieve the purpose of leveling.

[0068] The vehicle body weighing device provided in this embodiment has a support mechanism 1 and a weighing mechanism 2 arranged at intervals, and the support mechanism 1 and the weighing mechanism 2 together form a weighing point of the secondary support surface of the vehicle body 100 to be tested, which can be consistent with the actual weight distribution of the vehicle body 100 to be tested, so as to simulate the actual stress state of the vehicle body 100 to be tested. The lifting member 213 is driven to move by the second lifting drive source 211 to realize the weighing simulation padding adjustment process of the vehicle body 100 to be tested, so as to solve the problem of relative displacement between the vehicle body 100 to be tested and the weighing adapter after multiple lifting and padding by the jack, reduce system errors, and improve the surface flatness of the secondary support surface of the vehicle body 100 to be tested. In addition, direct lifting and lowering using the second lifting drive source 211 is simpler and faster than the existing padding method, and improves the weighing efficiency. For example, the weighing efficiency can be increased by about 3 times.

[0069] Among them, the first lifting drive source 11 and the second lifting drive source 211 both include a servo motor, a hydraulic pump, a hydraulic control valve and a hydraulic cylinder. The hydraulic pump is powered by a servo motor and can accurately control the movement of the hydraulic pump. The lifting accuracy of the hydraulic cylinder is approximately 0.1mm, and the flatness of the vehicle body 100 to be tested is approximately 0.1mm, which reduces the system error and improves the weighing accuracy.

[0070] Exemplarily, the first lifting drive source 11 and the second lifting drive source 211 can specifically adopt a hydraulic module, which adopts electro-hydraulic servo control technology to integrate the oil tank, hydraulic pump, hydraulic control valve, hydraulic cylinder, liquid level sensor and alarm into one, forming an electro-hydraulic actuator. The electro-hydraulic actuator does not require an external oil supply station, does not require an external oil pipeline, does not require oil filtering, heating, cooling and other maintenance work, and is not polluted by external environmental dust, moisture, radiation, etc. In addition, the hydraulic module has an oil level alarm function. When the liquid level sensor detects that the oil level in the oil tank is lower than the alarm value, the alarm will sound an alarm.

[0071] Specifically, Figure 5 As shown, the first lifting drive source 11 has a lifting function, the stroke of the first lifting drive source 11 is about 100mm, and the static load-bearing capacity of the first lifting drive source 11 is about 50t, which can withstand the impact of the vehicle body 100 to be detected being suspended on the support body 12. Before the vehicle body 100 to be detected is weighed, the support body 12 of the support mechanism 1 can bear the vehicle body 100 to be detected. During weighing, the first lifting drive source 11 drives the support body 12 to descend along the first direction to slowly place the vehicle body 100 to be detected on the lifting member 213 of the weighing mechanism 2 to prevent the vehicle body 100 to be detected from directly descending and causing an impact on the weighing sensor 212 of the weighing mechanism 2. Under the joint action of the first lifting drive source 11 and the support body 12, the vehicle body 100 to be detected can be lifted and lowered smoothly.

[0072] In addition, if Figure 5-Figure 7 As shown, the support mechanism 1 also includes a support base 13 and an adjustment member 14. The support base 13 is arranged on the base 3. The adjustment member 14 is located between the support base 13 and the first lifting drive source 11 and is detachably connected thereto. The adjustment member 14 may specifically be a transition flange. The transition flange and the support base 13, and the transition flange and the first lifting drive source 11 can be fixed by bolts. By setting the height of the adjustment member 14 adjustable along the first direction, the height of the adjustment member 14 along the first direction is adjusted according to actual use needs, thereby adjusting the height of the support body 12, and the height difference between the body support of the vehicle body 100 to be detected and the second support surface is adjusted by using the adjustment member 14.

[0073] In one embodiment, there are multiple supporting mechanisms 1 and weighing mechanisms 2, and each supporting mechanism 1 corresponds to at least one weighing mechanism 2. For example, Figure 1-Figure 2As shown, the number of supporting mechanisms 1 and weighing mechanisms 2 is the same, and multiple supporting mechanisms 1 and multiple weighing mechanisms 2 are correspondingly arranged, that is, each weighing point is composed of a supporting mechanism 1 and a weighing mechanism 2; or, as Figure 3-Figure 4 As shown, the number of weighing mechanisms 2 is greater than the number of supporting mechanisms 1, and two weighing mechanisms 2 are respectively arranged on both sides of each supporting mechanism 1, that is, each weighing point is composed of one supporting mechanism 1 and two weighing mechanisms 2; of course, the quantity correspondence between the supporting mechanism 1 and the weighing mechanism 2 can be adjusted according to actual production needs.

[0074] It can be understood that when there are multiple weighing mechanisms 2, if the value of the weighing sensor corresponding to one of the weighing mechanisms 2 is used as the actual weight, the average value of the values ​​of the weighing sensors corresponding to the other weighing mechanisms 2 can be used as the preset weight; or the values ​​of the weighing sensors corresponding to the other weighing mechanisms 2 are within a certain range as the preset weight.

[0075] Since the types of rubber piles, the distance between rubber piles, and the distance between the secondary support surface and the body support surface of different vehicle models are different, the existing body weighing equipment needs to design different body weighing adapters to match them, resulting in a relatively high production cost of the body weighing adapters.

[0076] For this reason, Figure 8 As shown, the weighing mechanism 2 further includes a weighing base 20 and an adjusting component 22. The weighing base 20 is arranged on the base 3, and has good stable support to prevent the weighing component 21 from tilting. The adjusting component 22 is arranged between the weighing base 20 and the weighing component 21, and the adjusting component 22 is used to adjust the position of the weighing component 21 relative to the weighing base 20 along the second direction and / or the third direction; wherein the first direction (the first direction is marked with D1), the second direction (the second direction is marked with D2) and the third direction (the third direction is marked with D3) are perpendicular to each other.

[0077] In this way, the weighing component 21 is not a fixed structure but a movable structure. The adjusting component 22 realizes the position adjustment of the weighing component 21 relative to the weighing base 20 to adapt to the weighing and leveling of different types of vehicle bodies 100 to be inspected. Different types of vehicle bodies 100 to be inspected can be matched by one weighing mechanism 2, saving the original production and storage and transportation costs.

[0078] There may be one adjusting component 22 and one weighing component 21, and one adjusting component 22 is arranged corresponding to one weighing component 21, so that the entire weighing mechanism 2 forms a measuring point, and the weighing mechanism 2 can also be called a single-support measuring pier.

[0079] Specifically, the adjustment component 22 includes a transverse driving source, a transverse mounting seat, a longitudinal driving source and a longitudinal mounting seat. The transverse driving source is arranged on the weighing base 20, and the output end of the transverse driving source is connected to the transverse mounting seat. The longitudinal driving source is arranged on the transverse mounting seat, and the output end of the longitudinal driving source is connected to the weighing component 21. The transverse driving source drives the longitudinal driving source and the weighing component 21 to move in the second direction in sequence through the transverse mounting seat, which is used for adjusting the position of the weighing component 21 in the second direction. The longitudinal driving source drives the weighing component 21 to move in the third direction, which is used for adjusting the position of the weighing component 21 in the third direction.

[0080] Exemplarily, the transverse driving source may be a motor, the output end of the motor is connected to the lead screw, the lead screw nut is sleeved on the lead screw and connected to the transverse mounting seat, the motor drives the lead screw to rotate, and the lead screw and the lead screw nut form a lead screw nut pair, thereby driving the transverse mounting seat to move. The driving structure of the longitudinal driving source is similar to that of the transverse driving source, except that the driving direction is different, so it will not be described in detail. The stroke of the transverse driving source along the second direction is 250mm to 350mm, for example, 250mm, 300mm, 350mm. The stroke of the longitudinal driving source along the third direction is 150mm to 250mm, for example, 150mm, 200mm, 250mm.

[0081] In one embodiment, Figure 8-Figure 9 As shown, the weighing assembly 21 also includes a guide sleeve 214, which is arranged on the second lifting drive source 211, and the lifting member 213 is inserted into the guide sleeve 214 and slidably cooperates with the guide sleeve 214. The guide sleeve 214 serves to guide the lifting member 213 to avoid the lifting member 213 from being skewed due to the large weight of the vehicle body 100 to be detected, thereby ensuring the detection accuracy of the weighing sensor 212.

[0082] Among them, Figure 10-12 As shown, the guide sleeve 214, the output end of the second lifting drive source 211, the weighing sensor 212 and the lifting member 213 are coaxially arranged. In this arrangement, the weight of the vehicle body 100 to be detected can be directly transmitted to the weighing sensor 212 through the lifting member 213, so that the weighing sensor 212 can accurately detect the weight of the vehicle body 100 to be detected, thereby improving the detection accuracy.

[0083] The existing vehicle body weighing equipment needs to level the upper surface of the adapter when the vehicle type is changed. Due to the error of the level gauge, the error after adjustment is relatively large, for example, the error is about -0.5mm to 0.5mm.

[0084] For this reason, Fig.13As shown, the weighing mechanism 2 further includes a leveling assembly 23, which is disposed on the guide sleeve 214 and is used to adjust the level of the lifting members 213 in the multiple weighing mechanisms 2. With such an arrangement, before the weighing mechanism 2 is used in normal circumstances, the leveling assembly 23 can be used to level the lifting members 213 toward the supporting surface of the vehicle body 100 to be inspected, so as to ensure that the lifting members 213 of each weighing mechanism 2 are in the same plane.

[0085] It is understandable that when the weighing mechanism 2 is initially installed, the installation position of the leveling assembly 23 on the guide sleeve 214 is kept consistent as much as possible.

[0086] Specifically, Figure 13-14 As shown, the leveling assembly 23 includes a leveling box 231 and a distance sensor 232. The leveling box 231 is located below the water tank along the first direction and is connected to the water tank through a connecting pipe. The distance sensor 232 can be a laser distance sensor. The distance sensor 232 is located above the leveling box 231 along the first direction and is used to detect the liquid level in the leveling box 231.

[0087] For example, there are four weighing mechanisms 2, and the four weighing mechanisms 2 have four leveling boxes 231 and four distance sensors 232. Before leveling, the water tank is placed at a position higher than the leveling box 231, and one end of the connecting pipe is connected to the water tank, and the other end is connected to the leveling box 231. After the four leveling boxes 231 are connected by the four connecting pipes, the liquid is injected into the water tank. According to the U-shaped tube principle, the theoretical height of the liquid level of the leveling box 231 remains consistent. Then, the four distance sensors 232 are used to measure the liquid levels of the four leveling boxes 231, and the detected liquid level heights are compared to obtain the height difference of the four weighing mechanisms 2. Finally, the second lifting drive source 211 of the weighing mechanism 2 is controlled to move, and the height position of the lifting member 213 is adjusted, so that the flatness of the supporting surface of the lifting member 213 corresponding to each weighing mechanism 2 is maintained in one plane.

[0088] In one embodiment, Fig.16 As shown, the vehicle body weighing device further includes a calibration component 4 , which is detachably connected to the guide sleeve 214 , and is used to calibrate the weighing sensor 212 .

[0089] Before the weighing sensor 212 is used for weighing, the weighing sensor 212 is calibrated by the calibration component 4 to achieve the purpose of verifying the weighing sensor 212, thereby ensuring the accuracy of the detection of the weighing sensor 212. At the same time, since the calibration component 4 is not a fixed structure, the calibration component 4 is installed on the guide sleeve 214 when calibration is required, and self-calibration can be achieved without removing the weighing sensor 212, thereby reducing the system error caused by assembly and further improving the detection accuracy.

[0090] Specifically, Fig.16 As shown, the calibration assembly 4 includes a calibration sleeve 41, an elastic member 42, a calibration sensor 43, a mounting seat 44 and a display. The calibration sleeve 41 is provided with an open end at one end along the first direction, and the open end is arranged toward the lifting member 213. The calibration sleeve 41 is sleeved on the outside of the lifting member 213 and the weighing sensor 212 and is detachably connected to the guide sleeve 214. The elastic member 42 can be an elastic gasket or a disc spring or other elastic component. The elastic member 42 can withstand a maximum pressure of 6t. The elastic member 42 is arranged in the mounting groove of the calibration sleeve 41, and the two ends of the elastic member 42 are respectively abutted against the mounting seat 44 and the calibration sensor 43. The calibration sensor 43 can be a C4 level sensor. The calibration sensor 43 is arranged in the calibration sleeve 41 and abuts against the elastic member 42. For example, the calibration sensor 43 is fixed to the inside of the calibration sleeve 41 by accessories such as a pin shaft. The display is electrically connected to the calibration sensor 43. For example, a through hole is provided on the side wall of the calibration sleeve 41. One end of the signal line is electrically connected to the calibration sensor 43, and the other end passes through the through hole and is electrically connected to the display. The signal line and the display can be detachably connected through an aerospace plug. The display is located outside the calibration sleeve 41, so that the operator can view the displayed value of the calibration sensor 43 conveniently.

[0091] The second lifting drive source 211 can drive the lifting member 213 to move along the first direction and toward the calibration sleeve 41 through the weighing sensor 212, so that the lifting member 213 abuts against the calibration sensor 43, and the standard pressure value of the calibration sensor 43 is displayed on the display. Since the guide sleeve 214 has a bottom wall at one end along the first direction and away from the open end, the bottom wall and / or the elastic member 42 will apply a reaction force to the lifting member 213, and the reaction force is transmitted to the weighing sensor 212 through the lifting member 213. The actual pressure value of the weighing sensor 212 is displayed on the upper computer, and the purpose of calibrating the weighing sensor 212 through the calibration sensor 43 is achieved by comparing the standard pressure value and the actual pressure value.

[0092] For example, after the calibration sleeve 41 and the guide sleeve 214 are fixed by bolts, the signal line is passed through the through hole and the aviation plug is connected to the side wall of the suitcase with a display. At this time, the change of the display value inside the suitcase can be seen. If the weight of the calibration sleeve 41 needs to be removed, the current weight can be cleared by pressing the "zero reset" button on the display before tightening the bolts to achieve the purpose of original zeroing.

[0093] After entering the calibration-specific interactive interface, control the second lifting drive source 211 to rise 0.1 mm, manually record the value of the calibration sensor 43, and compare the results of the interactive interface after recording multiple sets of data. If the amplification factor obtained by curve fitting of the calibration sensor 43 is close to 1±0.08 or within the error range recognized by the user, it indicates that the weighing sensor 212 is qualified. Otherwise, it is necessary to adjust the relevant parameters to compensate the weighing sensor 212.

[0094] In one embodiment, Fig.15 As shown, there are multiple adjusting components 22 and weighing components 21, and multiple adjusting components 22 are arranged on the weighing base 20 and correspondingly connected to multiple weighing components 21. For example, two adjusting components 22 are arranged corresponding to two weighing components 21, so that the entire weighing mechanism 2 consists of two measuring points, and the weighing mechanism 2 can also be called a double-support measuring pier.

[0095] The double-support measuring pier has a similar structure to the single-support measuring pier, the only difference being that the double-support measuring pier has two adjustment components 22 and two weighing components 21, the spacing between the two load-bearing components of the double-support measuring pier is adjustable, the center distance adjustment range is 300mm to 800mm, specifically 300mm, 500mm and 800mm can be selected, and the lateral adjustment range is 300mm to 400mm, 300mm to 400mm and 350mm. Other structures and principles are similar, so they will not be described in detail.

[0096] For example, a double-supported measuring pier and a single-supported measuring pier can be used in combination, such as Figure 1-Figure 2 As shown, when the vehicle body 100 to be tested is an eight-axle locomotive, the vehicle body weighing device has four supporting mechanisms 1 and four double-support measuring piers; Figure 3-Figure 4 As shown, when the vehicle body 100 to be tested is a six-axle locomotive, the vehicle body weighing device has four support mechanisms 1, four double-support measuring piers and four single-support measuring piers, and a single-support measuring pier and a double-support measuring pier are respectively arranged on both sides of each support mechanism 1.

[0097] During the lifting process of the vehicle body to be measured, the support mechanism 1 can ensure the smooth lifting of the vehicle body to be measured. The height error of the four support mechanisms 1 exceeds 20mm and has the function of automatically stopping the lifting when the error exceeds the tolerance, so as to prevent the vehicle body to be measured from tilting and other hidden dangers. It can be understood that the second lifting drive sources 211 of multiple weighing mechanisms 2 can be controlled separately, or the second lifting drive sources 211 of multiple weighing mechanisms 2 can be controlled to lift and lower at the same time.

[0098] In one embodiment, the vehicle weighing device provided in this embodiment further includes an electric control system, which is electrically connected to the support mechanism 1 and the weighing mechanism 2. After the vehicle body 100 to be inspected is weighed for the first time or the position is adjusted, the electric control system controls the upper surface of the support body 12 of the support mechanism 1 along the first direction to be automatically leveled. During the weighing process of the vehicle body 100 to be inspected, the electric control system can accurately control the lifting and lowering of the second lifting drive source 211 of the weighing mechanism 2.

[0099] The electric control system includes an electric control cabinet, which can control the lifting and lowering of the first lifting drive source 11 of the support mechanism 1 and the lifting and lowering of the second lifting drive source 211 of the weighing mechanism 2. The electric control cabinet is provided with power start and stop, weighing control, and manual / automatic switching buttons, and can display voltage, current, pressure, temperature, weighing process, result information, and fault and abnormal warning information in real time. The electric control cabinet is also provided with short-circuit protection devices, overheating protection devices, and power-off self-protection devices for each circuit design. In addition, each weighing mechanism 2 can also be equipped with an independent control box, which controls the control box buttons and debugs each electro-hydraulic actuator through manual mode.

[0100] At the same time, according to the input estimated padding amount, the second lifting drive source 211 of the weighing mechanism 2 is controlled to perform lifting movement, and the electrical control cabinet can simulate padding and weigh the state after simulated padding again. Specifically, the electrical control cabinet integrates fusion technologies such as mechanical model analysis, finite element analysis, and convolutional neural network deep learning to achieve self-learning capabilities. Through the analysis of weighing data of multiple vehicle bodies 100 to be tested, the electrical control cabinet can calculate the recommended value of padding based on the mathematical model mechanical analysis, replacing the technical personnel's analysis process to accurately predict the padding amount from zero sample, small sample to large sample.

[0101] The electronic control system also includes a workbench, which can also be called a host computer, which can process the current signals sent by each sensor and convert them into corresponding displacement and pressure data to be displayed on the interactive interface. Specifically, the workbench includes a computer host, a display, a keyboard, a mouse, an operating table, a laser printer, etc. It issues weighing operation instructions through buttons, knobs or mouse clicks, and can display various data during the weighing process. The computer host has stable performance, a friendly human-computer dialogue interface, easy operation, intuitive and practical, and can complete data display, storage, reading, printing and other tasks.

[0102] The electronic control system may also have a software system, which is a specially compiled weighing application program, which can control the lifting and lowering commands of the vehicle body 100 to be tested, and can receive the measurement data of each sensor and use it as data compensation during weighing. In addition, it can receive and analyze the data of the weighing sensor 212, automatically calculate and control the completion of the simulated padding weighing process of the vehicle body 100 to be tested, and display it on the display of the workbench.

[0103] It should be noted that the embodiments of the present invention are shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0104] It should be understood that the present invention is not limited in its application to the detailed structure and arrangement of the components proposed in this specification. The present invention can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of the present invention. It should be understood that the present invention disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for implementing the present invention and will enable those skilled in the art to utilize the present invention.

[0105] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and example embodiments are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0106] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A vehicle body weighing device, characterized in that: include: A support mechanism, the support mechanism comprising a first lifting drive source and a support body, the output end of the first lifting drive source is connected to the support body, and the support body is used to carry a vehicle body to be detected; A weighing mechanism is arranged at a distance from the supporting mechanism, the weighing mechanism includes a weighing assembly, the weighing assembly includes a second lifting drive source, a weighing sensor and a lifting member, the second lifting drive source can be connected to the lifting member through the weighing sensor, and the lifting member is used to carry the vehicle body to be detected; The first lifting driving source can drive the vehicle body to be detected to move along the first direction and towards the lifting member through the supporting body, so that the lifting member can bear the secondary supporting surface of the vehicle body to be detected, so that the weighing sensor can detect the actual weight of the vehicle body to be detected; The second lifting drive source can drive the lifting member to move along a first direction toward the vehicle body to be detected through the weighing sensor, so as to simulate a padding operation to level the secondary support surface of the vehicle body to be detected.

2. The vehicle body weighing device according to claim 1, characterized in that: The support mechanism further includes a support base and an adjusting member, wherein the adjusting member is located between the support base and the first lifting drive source and is detachably connected thereto, and the height of the adjusting member along a first direction is adjustable.

3. The vehicle body weighing device according to claim 1, characterized in that: The weighing mechanism further comprises a weighing base and an adjusting component, wherein the adjusting component is disposed between the weighing base and the weighing component, and the adjusting component is used to adjust the position of the weighing component relative to the weighing base along the second direction and / or the third direction; The first direction, the second direction and the third direction are perpendicular to each other.

4. The vehicle body weighing device according to claim 3, characterized in that: There are multiple adjusting components and multiple weighing components, and multiple adjusting components are arranged on the weighing base and correspondingly connected to multiple weighing components.

5. The vehicle body weighing device according to claim 1, characterized in that: There are multiple supporting mechanisms and weighing mechanisms, and each supporting mechanism corresponds to at least one weighing mechanism.

6. The vehicle body weighing device according to any one of claims 1 to 5, characterized in that: The weighing assembly also includes: A guide sleeve, provided on the second lifting drive source, the lifting member is passed through the guide sleeve and slidably cooperates with the guide sleeve; Wherein, the guide sleeve, the output end of the second lifting drive source, the weighing sensor and the lifting member are coaxially arranged.

7. The vehicle body weighing device according to claim 6, characterized in that: The weighing mechanism further comprises a leveling component, which is arranged on the guide sleeve and is used for adjusting the horizontality of the lifting members in the plurality of weighing mechanisms.

8. The vehicle body weighing device according to claim 7, characterized in that: The leveling assembly comprises: A leveling box, located below the water tank along the first direction and connected to the water tank through a connecting pipe; The distance measuring sensor is located above the leveling box along the first direction and is used to detect the height of the liquid level in the leveling box.

9. The vehicle body weighing device according to claim 6, characterized in that: It also includes a calibration component, which is detachably connected to the guide sleeve and is used to calibrate the weighing sensor.

10. The vehicle body weighing device according to claim 9, characterized in that: The calibration component comprises: A calibration sleeve, wherein one end of the calibration sleeve along the first direction is provided with an open end, the open end is arranged toward the lifting member, the calibration sleeve is sleeved on the outside of the lifting member and the weighing sensor and is detachably connected to the guide sleeve; An elastic member, disposed in the calibration sleeve; A calibration sensor, disposed in the calibration sleeve and abutting against the elastic member; A display, disposed outside the calibration sleeve and electrically connected to the calibration sensor; Wherein, the second lifting drive source can drive the lifting member to move along the first direction and toward the calibration sleeve through the weighing sensor, so that the lifting member abuts against the calibration sensor to calibrate the weighing sensor through the calibration sensor.

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