Weighing device

Abstract

The utility model provides a weighing device, which comprises at least two supporting seats, at least one weighing platform and at least two groups of lever mechanisms, the weighing platform is arranged on the supporting seats, and the lever mechanisms are connected between the weighing platform and the supporting seats; the lever mechanism comprises a connecting rod, a sensor and a pulling plate, one end of the sensor is connected to the connecting rod, and the other end of the sensor is connected to the pulling plate. Therefore, the weighing device provided by the utility model can increase the measuring range of the weighing device.

Description

Technical Field

[0001] This utility model relates to the field of weighing equipment technology, and in particular to a weighing device. Background Technology

[0002] Large cranes are inherently heavy and have many components, so they are generally assembled on-site. A significant portion of this weight is counterweight (which typically accounts for close to 50% of the total weight and weighs over 4000 tons). Transporting this counterweight is costly. To reduce costs, a frame is constructed on-site, and soil is used to act as counterweight. However, due to variations in soil quality, moisture content, and compaction, the weight of each frame differs, potentially causing the counterweight to fall short of the design value and leading to safety accidents. Common weighing methods similar to weighbridges used for vehicles have limited weighing capacity, usually not exceeding 100 tons, making them unsuitable for the aforementioned conditions. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a weighing device that can solve the problems existing in the prior art, increase the measuring range of the weighing device, accurately measure the weight of the counterweight, and improve the safety of the crane during use.

[0004] This utility model provides a weighing device, including at least two support seats, at least one weighing platform, and at least two sets of lever mechanisms. The weighing platform is disposed on the support seats, and the lever mechanisms are connected between the weighing platform and the support seats. The lever mechanism includes a connecting rod, a sensor, and a pull plate. One end of the sensor is connected to the connecting rod, and the other end of the sensor is connected to the pull plate.

[0005] In one embodiment, each of the lever mechanisms includes a first fixing part, a second fixing part, and a third fixing part. The first fixing part and the second fixing part are fixedly connected to one end of the connecting rod, and the third fixing part is fixedly connected to the other end of the connecting rod. The first fixing part is connected to the weighing platform, the second fixing part is connected to the first connecting surface, and the third fixing part is fixedly connected to the sensor.

[0006] In one embodiment, the second fixing part is disposed between the first fixing part and the third fixing part, and the second fixing part is disposed at the end of the connecting rod away from the sensor.

[0007] In one embodiment, the sensor and the body of the connecting rod are arranged perpendicularly to each other, and the pull plate and the body of the connecting rod are arranged perpendicularly to each other.

[0008] In one embodiment, two supports of the same weighing platform are each provided with one of the lever mechanisms to form a set of lever mechanisms; or two supports of the same weighing platform are each provided with two of the lever mechanisms to form two sets of lever mechanisms, and the two lever mechanisms on the same support belong to the two sets of lever mechanisms respectively, with the two lever mechanisms on the same support spaced apart.

[0009] In one embodiment, the actual weight of the object on the weighing platform is: Where k is the weighing coefficient, determined by experimental measurement; L1 is the length of the short-side lever arm of the connecting rod; L2 is the length of the long-side lever arm of the connecting rod; F ’ The force is measured by the sensor.

[0010] In one embodiment, the length of the short-side lever arm of the connecting rod refers to the perpendicular distance from the center point of the second fixed part to the center point of the first fixed part in the direction of force, and the length of the long-side lever arm of the connecting rod refers to the perpendicular distance from the center point of the second fixed part to the center point of the third fixed part in the direction of force.

[0011] In one embodiment, the force acting on the sensor is: Where n is the number of sensors, which is an even number.

[0012] In one embodiment, the weighing platform is provided with a first connecting seat at one end near the support base, and the first fixing part is connected to the first connecting seat through a first connecting member.

[0013] In one embodiment, the first connecting surface is provided with a second connecting seat, the second fixing part is connected to the second connecting seat through a second connecting member, and the third fixing part is connected to the sensor through a third connecting member.

[0014] The weighing device of this utility model is equipped with a lever mechanism, which is used to connect the weighing platform and the support base. The connecting rod and the pull plate of the lever mechanism are connected by a sensor. Since the sensor 142 and the body of the connecting rod 141 are set perpendicular to each other, and the pull plate 143 and the body of the connecting rod 141 are set perpendicular to each other, the connecting rod, the sensor and the pull plate are connected to form a lever mechanism. The weighing platform and the support base are then connected through the lever mechanism. By changing the connection method of the sensor, the weighing device can increase the measurement range. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view schematic diagram of the weighing device of this utility model during weighing.

[0017] Figure 2 This is a side view of the weighing device of this utility model during weighing.

[0018] Figure 3 This is a structural schematic diagram of the weighing device of this utility model.

[0019] Figure 4 This is a partial disassembled structural diagram of the weighing device of this utility model.

[0020] Figure 5 This is a schematic diagram of the force-bearing structure of the lever mechanism of the weighing device of this utility model.

[0021] Explanation of reference numerals: First fixing hole - 101; Second connecting hole - 102; Second fixing hole - 103; Third fixing hole - 104; First mounting hole - 105; Second mounting hole - 106; Third mounting hole - 107; Fourth mounting hole - 108; Third connecting hole - 109; Base - 11; Support seat - 12; First connecting surface - 121; Second connecting surface - 122; Second connecting seat - 123; Third connecting seat - 124; Weighing platform - 13; First connecting seat - 131; Lever mechanism - 14; Connecting rod - 141; First fixing part - 1411; Second fixing part - 1412; Third fixing part - 1413; Sensor - 142; Pull plate - 143; First connector - 151; Second connector - 152; Third connector - 153; Fourth connector - 154; Fifth connector - 155.

[0022] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0025] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0027] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0028] like Figures 1 to 5 As shown, the weighing device includes a base 11, at least two support seats 12, at least one weighing platform 13, and at least two sets of lever mechanisms 14. The base 11 is fixedly connected to the ground or the machine body, making the base 11 a fixed structure. The machine body refers to the main body of various machines or heavy machinery. Each support seat 12 is fixedly connected to the base 11. The weighing platform 13 is set on the support seat 12. The weighing platform 13 is used to place the object to be measured and weigh it. The weighing platform 13 and the support seat 12 are both rectangular structures. The lever mechanism 14 is connected between the weighing platform 13 and the support seat 12. The lever mechanism 14 includes a connecting rod 141, a sensor 142, and a pull plate 143. One end of the sensor 142 is connected to the connecting rod 141, and the other end of the sensor 142 is connected to the pull plate 143. The sensor 142 and the body of the connecting rod 141 are arranged perpendicular to each other, and the pull plate 143 and the body of the connecting rod 141 are arranged perpendicular to each other. It is understood that the sensor 142 and the pull plate 143 are vertically arranged, and the body of the pull plate 143 is horizontally arranged. Therefore, the sensor 142 and the body of the pull plate 143 are perpendicular to each other, and the connecting rod 141 is perpendicular to the body of the pull plate 143. The body of the pull plate 143 refers to the structure of the pull plate 143 other than the first fixing part 1411, the second fixing part 1412 and the third fixing part 1413.

[0029] Preferably, each of the two support seats 12 of the same weighing platform 13 is provided with a lever mechanism 14 to form a set of lever mechanisms 14; for example, a lever mechanism 14 is connected to one support seat 12. Since the same weighing platform requires two support seats 12 for support, the lever mechanisms 14 on the two support seats 12 form a set of lever mechanisms 14 to make the weighing platform 13 reach balance.

[0030] In another preferred embodiment, two support seats 12 of the same weighing platform 13 are respectively provided with two lever mechanisms 14 to form two sets of lever mechanisms 14, and the two lever mechanisms 14 on the same support seat 12 belong to two sets of lever mechanisms 14, and the two lever mechanisms 14 on the same support seat 12 are spaced apart. For example, the two support seats 12 are a first support seat and a second support seat, wherein the first support seat is provided with a first lever mechanism and a second lever mechanism, and the second support seat is provided with a third lever mechanism and a fourth lever mechanism. The first lever mechanism and the third lever mechanism form a group, and the second lever mechanism and the fourth lever mechanism form a group, thus forming a total of two sets of lever mechanisms 14.

[0031] Since the sensor 142 itself has a limited measurement range and cannot meet the actual use requirements, the sensor 142 is added into the lever mechanism 14 so that the sensor 142 can measure a heavier weight.

[0032] The weighing device of this utility model is provided with a lever mechanism 14, which is used to connect the weighing platform 13 and the support base 12. The connecting rod 141 of the lever mechanism 14 and the pull plate 143 are connected by a sensor 142. Since the sensor 142 and the body of the connecting rod 141 are set perpendicular to each other, and the pull plate 143 and the body of the connecting rod 141 are set perpendicular to each other, the connecting rod 141, the sensor 142 and the pull plate 143 are connected to form the lever mechanism 14. The weighing platform 13 and the support base 12 are then connected through the lever mechanism 14. By changing the connection method of the sensor 142, the weighing device can increase the measurement range.

[0033] like Figure 4 and Figure 5 As shown, the support base 12 includes a first connecting surface 121 and a second connecting surface 122. The first connecting surface 121 and the second connecting surface 122 are arranged perpendicular to each other. The connecting rod 141 is connected between the first connecting surface 121 and the weighing platform 13, and the pull plate 143 is connected to the second connecting surface 122.

[0034] Preferably, each lever mechanism 14 includes a first fixing part 1411, a second fixing part 1412, and a third fixing part 1413. The first fixing part 1411 and the second fixing part 1412 are fixedly connected to one end of the connecting rod 141, and the third fixing part 1413 is fixedly connected to the other end of the connecting rod 141. The first fixing part 1411 is connected to the weighing platform 13, the second fixing part 1412 is connected to the first connecting surface 121, and the third fixing part 1413 is fixedly connected to the sensor 142. The second fixing part 1412 is disposed between the first fixing part 1411 and the third fixing part 1413, and the second fixing part is disposed at the end of the connecting rod 141 away from the sensor 142.

[0035] Preferably, the weighing platform 13 is provided with a first connecting seat 131 at one end near the support base 12, and the first fixing part 1411 is connected to the first connecting seat 131 through a first connecting member 151. Specifically, the first connecting seat 131 is provided with a first connecting hole, the first fixing part 1411 is provided with a first fixing hole 101, and the first connecting member 151 is provided through the first connecting hole and the first fixing hole 101. The first connecting member 151 is preferably a pin or bolt, etc.

[0036] Preferably, the first connecting surface 121 is provided with a second connecting seat 123, the second fixing part 1412 is connected to the second connecting seat 123 through a second connecting member 152, and the third fixing part 1413 is connected to the sensor 142 through a third connecting member 153. Specifically, the second connecting seat 123 is provided with a second connecting hole 102, the second fixing part 1412 is provided with a second fixing hole 103, the second connecting member 152 is disposed through the second connecting hole 102 and the second fixing hole 103, and the second connecting member 152 is preferably a pin or bolt, etc.; the third fixing part 1413 is provided with a third fixing hole 104, the end of the sensor 142 near the connecting rod 141 is provided with a first mounting hole 105, the third connecting member 153 is disposed through the third fixing hole 104 and the first mounting hole 105, and the third connecting member 153 is preferably a pin or bolt, etc.; the sensor 142 and the pull plate 143 are connected by a fourth connecting member 154, and the end of the sensor 142 near the pull plate 143 is provided with a third fixing hole 104. The pull plate 143 has a second mounting hole 106 and a third mounting hole 107. A fourth connector 154 passes through the second mounting hole 106 and the third mounting hole 107. The fourth connector 154 is preferably a pin or bolt. The pull plate 143 has a fourth mounting hole 108 at the end away from the sensor 142. A third connector 124 is fixedly connected to the second connecting surface 122 of the support base 12. The third connector 124 has a third connecting hole 109. The third connector 124 and the pull plate 143 are connected by a fifth connector 155, which passes through the third connecting hole 109 and the fourth mounting hole 108. The fifth connector 155 is preferably a pin or bolt, but is not limited thereto.

[0037] Preferably, the connecting rod 141 is integrally formed, or the connecting rod 141 includes a first upright plate, a first reinforcing plate and a second upright plate, the first upright plate and the second upright plate are arranged opposite to each other, and the first reinforcing plate is fixedly connected between the first upright plate and the second upright plate; the pull plate 143 is integrally formed, or the pull plate 143 includes a third upright plate, a fourth upright plate and a second reinforcing plate, the third upright plate and the fourth upright plate are arranged opposite to each other, and the second reinforcing plate is fixedly connected between the third upright plate and the fourth upright plate.

[0038] Preferably, the actual weight of the object on the weighing platform 13 is:

[0039]

[0040] Where k is the weighing coefficient, determined by experimental measurement; L1 is the length of the short lever arm of connecting rod 141; L2 is the length of the long lever arm of connecting rod 141; F ’ The force is measured by sensor 142.

[0041] Preferably, the length of the short-side lever arm of the connecting rod 141 refers to the perpendicular distance from the center point of the second fixing part 1412 to the center point of the first fixing part 1411 in the direction of force application, and the length of the long-side lever arm of the connecting rod 141 refers to the perpendicular distance from the center point of the second fixing part 1412 to the center point of the third fixing part 1413 in the direction of force application. It can be understood that the center point of the first fixing part 1411 refers to the center point of the first fixing hole 101, the center point of the second fixing part 1412 refers to the center point of the second fixing hole 103, and the center point of the third fixing part 1413 refers to the center point of the third fixing hole 104.

[0042] Preferably, the force on sensor 142 is:

[0043]

[0044] Where n is the number of sensors 142, and it is an even number. It can be understood that the number of n is determined by the number of lever mechanisms 14. When there are two sets of lever mechanisms 14, n is 4. When there are four sets of lever mechanisms, n is 8. In addition, the number of lever mechanisms 14 is an even number, that is, two, four or six, etc. Sensor 142 is a tension sensor.

[0045] Preferably, different connecting rods 141 can be selected to form a suitable lever mechanism 14 according to the actual use conditions, which is used to adjust the weighing range of the weighing device, that is, to adjust the ratio of L1 to L2. In addition, the shape of the connecting rod 141 can also be adjusted according to actual needs.

[0046] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A weighing device, characterized in that The weighing table (13) is arranged on the support seat (12), and the lever mechanism (14) is connected between the weighing table (13) and the support seat (12). The lever mechanism (14) comprises a connecting rod (141), a sensor (142) and a pull plate (143), one end of the sensor (142) is connected to the connecting rod (141), and the other end of the sensor (142) is connected to the pull plate (143).

2. Weighing apparatus according to claim 1, characterized in that Each of the lever mechanisms (14) comprises a first fixed part (1411), a second fixed part (1412) and a third fixed part (1413), the first fixed part (1411) and the second fixed part (1412) are fixedly connected to one end of the connecting rod (141), the third fixed part (1413) is connected to the other end of the connecting rod (141), the first fixed part (1411) is connected to the weighing table (13), the second fixed part (1412) is connected to a first connecting surface (121) of the support seat (12), and the third fixed part (1413) is fixedly connected to the sensor (142).

3. Weighing apparatus according to claim 2, characterized in that The second fixed part (1412) is arranged between the first fixed part (1411) and the third fixed part (1413), and the second fixed part (1412) is arranged at one end of the connecting rod (141) away from the sensor (142).

4. Weighing apparatus according to claim 2, characterized in that The sensor (142) and the body of the connecting rod (141) are arranged perpendicular to each other, and the pull plate (143) and the body of the connecting rod (141) are arranged perpendicular to each other.

5. The load weighing apparatus of claim 2 wherein, Two support seats (12) of the same weighing table (13) are respectively provided with one lever mechanism (14) to form a group of lever mechanisms (14). Or two support seats (12) of the same weighing table (13) are respectively provided with two lever mechanisms (14) to form two groups of lever mechanisms (14), and the two lever mechanisms (14) on the same support seat (12) belong to the two groups of lever mechanisms (14), and the two lever mechanisms (14) on the same support seat (12) are arranged at intervals.

6. Weighing apparatus according to any one of claims 2 to 5, characterized in that The actual weight of the object on the weighing table (13) is: wherein k is a weighing coefficient determined by experimental measurement, L1 is the length of the short side force arm of the connecting rod (141); L2 is the length of the long side force arm of the connecting rod (141), F ’ is the force measured by the sensor (142).

7. Weighing apparatus according to claim 6, characterized in that The length of the short side force arm of the connecting rod (141) refers to the perpendicular distance from the center point of the second fixed part (1412) to the force direction of the center point of the first fixed part (1411), and the length of the long side force arm of the connecting rod (141) refers to the perpendicular distance from the center point of the second fixed part (1412) to the center point of the third fixed part (1413).

8. Weighing apparatus according to claim 6, characterized in that The force borne by the sensor (142) is: Wherein, n is the number of sensors (142), and is an even number.

9. Weighing apparatus according to claim 4, characterized in that The weighing table (13) is provided with a first connecting seat (131) close to one end of the support seat (12), and the first fixed part (1411) is connected to the first connecting seat (131) through a first connecting piece (151).

10. Weighing apparatus according to claim 9, characterized in that The first connecting surface (121) is provided with a second connecting seat (123), the second fixing part (1412) is connected with the second connecting seat (123) through a second connecting piece (152), and the third fixing part (1413) is connected with the sensor (142) through a third connecting piece (153).

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