Torque loading device for electronic truck scale verification

Abstract

The utility model discloses a torque loading device for verification of an electronic truck scale, which comprises a supporting plate, one end of the supporting plate is movably connected with a roller at the end part of a pressing plate, the middle part of the supporting plate is fixed at the end part of a piston rod at the top of an oil cylinder, and the other end of the supporting plate penetrates through a vertical plate fixed at one side of a base and is fixedly connected with a baffle block; the piston rod moves up and down to drive the supporting plate to move up and down, and meanwhile the supporting plate drives the pressing plate to rotate around the supporting plate and drives the check block to move up and down along the vertical plate so as to keep stress balance of the piston rod. The oil cylinder has the advantages that the supporting plate drives the check block to move up and down along the vertical plate, so that stress balance of the piston rod is kept, the situation that stress of the piston rod is uneven is improved, abrasion of a sealing ring at the end cover of the end of the oil cylinder is relieved, and the service life of the oil cylinder is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of rapid verification of electronic truck scales, and particularly relates to a torque loading device for verifying electronic truck scales. Background Art

[0002] In the prior art, CN200810232660.7 discloses a loading structure unit for truck scale calibration, which includes a rigid bearing base, a cantilever carrier, a double-acting hydraulic cylinder, and a standard sensor. A rotatable cantilever carrier is provided on the rigid bearing base. The double-acting hydraulic cylinder is fixed under the cantilever carrier in an inverted manner, and the standard sensor is also connected to the double-acting hydraulic cylinder in an inverted manner.

[0003] During the process of improving the above loading structure, the inventor found that a jack for machine tool maintenance disclosed in CN202322962347.1, which includes a jack body and a base. The bottom end of the jack body is fixedly connected to the top end of the base. A plunger assembly is provided at the top end of the base. The top end of the jack body is fixedly connected to a lifting block. A load-bearing claw is provided at the outer end of the lifting block. The width of the load-bearing claw is smaller than the width of the lifting block. The cross-sections of the lifting block and the load-bearing claw are both L-shaped. A limiting assembly is provided at the outer end of the load-bearing claw. However, this structure will cause unilateral force on the piston rod of the oil cylinder, affecting the wear of the sealing ring at the end cover of the oil cylinder end and shortening the service life of the oil cylinder. Summary of the Invention

[0004] The purpose of the embodiment of the utility model is to provide a torque loading device for verifying electronic truck scales, aiming to solve the technical problem that unilateral force on the piston rod of the oil cylinder in the loading structure for truck scale calibration affects the wear of the sealing ring at the end cover of the oil cylinder end and shortens the service life of the oil cylinder.

[0005] The embodiment of the utility model is implemented as follows:

[0006] A torque loading device for verifying electronic truck scales, the torque loading device includes: a support plate, one end of the support plate is movably connected to the roller at the end of the pressing plate, the middle part of the support plate is fixed to the end of the piston rod at the top of the oil cylinder, the other end of the support plate passes through the vertical plate fixed on one side of the base and is fixedly connected to the stop block. The up and down movement of the piston rod drives the up and down movement of the support plate. At the same time, the support plate drives the pressing plate to rotate around the support plate, and the support plate drives the stop block to move up and down along the vertical plate to maintain the force balance of the piston rod.

[0007] Further, the support plate is Z-shaped, one end of the support plate is close to the bottom of the oil cylinder and is provided with a convex platform, and the top surface of the convex platform is in rolling contact with the roller at the end of the rock plate.

[0008] Further, the middle part of the support plate is L-shaped, a part of the middle part of the support plate is parallel to the stroke direction of the oil cylinder, and the other part is fixed to the top of the piston rod of the oil cylinder.

[0009] Furthermore, the piston rod is encapsulated in the oil cylinder through an end cover. Outside the top of the oil cylinder, a limiting platform is fixed on the piston rod. The middle part of the support plate is sleeved on the top of the piston rod and fixed together with the limiting platform through a first fixing screw and a locking nut.

[0010] Furthermore, the bottom of the vertical plate is welded to the base; a through groove is provided in the middle of the vertical plate, and the through groove is parallel to the stroke of the oil cylinder.

[0011] Furthermore, a clamping portion is provided at the end of the support plate, and the clamping portion passes through the through groove; a second flange is provided at the end of the clamping portion; the clamping portion is fixed to the stopper through a second fixing screw; a first flange is provided at the bottom of the stopper, and the first flange and the second flange are attached to each other to realize the clamping of the clamping portion and the stopper together; the side surface of the stopper is attached to the side surface of the vertical plate.

[0012] The positive effect of the present utility model is that the support plate drives the stopper to move up and down along the vertical plate to maintain the force balance of the piston rod, improve the uneven force condition of the piston rod, reduce the wear of the sealing ring at the end cover of the oil cylinder end, and extend the service life of the oil cylinder. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the application scenario of a moment loading device for calibrating an electronic truck scale according to the present utility model;

[0014] Figure 2 is a three-dimensional structural diagram of the first perspective of a moment loading device for calibrating an electronic truck scale according to the present utility model;

[0015] Figure 3 is Figure 2 the three-dimensional structural diagram of the second perspective of a moment loading device for calibrating an electronic truck scale according to the present utility model shown in

[0016] Figure 4 is Figure 2 the side view of a moment loading device for calibrating an electronic truck scale according to the present utility model shown in

[0017] Figure 5 is Figure 2 the half-sectional view of a moment loading device for calibrating an electronic truck scale according to the present utility model shown in

[0018] Legend: 1 - pressure plate, 2 - first rotating shaft, 3 - roller, 4 - support plate, 5 - first fixing screw, 6 - vertical plate, 7 - stop block, 8 - second fixing screw, 9 - engaging part, 10 - oil pipe, 11 - manual pump, 12 - interface, 13 - oil cylinder, 14 - base, 15 - boss, 16 - second rotating shaft, 17 - support plate, 18 - first flange, 19 - second flange, 20 - through slot, 21 - limiting platform, 22 - end cover, 23 - piston rod, 24 - oil circuit, 25 - locking nut. Detailed implementation mode

[0019] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0021] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] As Figures 2 to 5 shown, it is a structural diagram of a torque loading device for electronic truck scale verification provided by an embodiment of the present utility model, including: a support plate 4, one end of the support plate 4 is movably connected to the roller at the end of the pressure plate 1, the middle part of the support plate 4 is fixed to the end of the piston rod 23 at the top of the oil cylinder 13, the other end of the support plate 4 passes through the vertical plate 6 fixed on one side of the base 14 and is fixedly connected to the stop block 7. The up and down movement of the piston rod 23 drives the up and down movement of the support plate 4. At the same time, the support plate 4 drives the pressure plate 1 to rotate around the support plate 17, and the support plate 4 drives the stop block 7 to move up and down along the vertical plate 6 to maintain the force balance of the piston rod 23.

[0023] In the embodiment of the present utility model, the support plate 4 drives the stop block 7 to move up and down along the vertical plate 6 to maintain the force balance of the piston rod 23, improve the uneven force of the piston rod, reduce the wear of the sealing ring at the end cover 22 of the oil cylinder 13, and extend the service life of the oil cylinder.

[0024] Specifically, as Figures 1 to 5As shown in the figure, a torque loading device for calibrating an electronic truck scale is applied to the calibration of an electronic truck scale. The hydraulic oil is supplied to the oil cylinder 13 through the oil pipe 10 by the manual pump 11. The oil cylinder 13 drives the pallet 4 to drive the pressure plate 1 to rotate around the first rotating shaft 2 at the top of the support plate 17 to load the truck scale. The support plate 17 is fixed on the top surface of the base 14, and the base is connected to the bottom of the truck scale. The end of the pressure plate 1 is rotatably connected with a roller 3 through the second rotating shaft 16. The torque loading device includes a pallet 4. One end of the pallet 4 is movably connected with the roller at the end of the pressure plate 1. The middle part of the pallet 4 is fixed at the end of the piston rod 23 at the top of the oil cylinder 13. The other end of the pallet 4 passes through the vertical plate 6 fixed on one side of the base 14 and is fixedly connected with the stop block 7. The up and down movement of the piston rod 23 drives the pallet 4 to move up and down. At the same time, the pallet 4 drives the pressure plate 1 to rotate around the support plate 17, and the pallet 4 drives the stop block 7 to move up and down along the vertical plate 6 to maintain the force balance of the piston rod 23.

[0025] Among them, the pallet 4 is Z-shaped. One end of the pallet 4 is close to the bottom of the oil cylinder 4 and is provided with a boss 15. The top surface of the boss 15 is in rolling contact with the roller 3 at the end of the rock plate 1. The middle part of the pallet 4 is L-shaped. One part of the middle part of the pallet 4 is parallel to the stroke direction of the oil cylinder 13, and the other part is fixed to the top of the piston rod 23 of the oil cylinder 13. The piston rod 23 is encapsulated in the oil cylinder 13 through the end cover 22. Outside the top of the oil cylinder 13, a limit platform 21 is fixed on the piston rod 23. The middle part of the pallet 4 is sleeved on the top of the piston rod 23 and is fixed together with the limit platform 21 through the first fixing screw 5 and the locking nut 25. The bottom of the vertical plate 6 is welded to the base 14. A through groove 20 is provided in the middle of the vertical plate 6, and the through groove 20 is parallel to the stroke of the oil cylinder. The end of the pallet 4 is provided with a clamping part 9, and the clamping part 9 passes through the through groove 20. The end of the clamping part 9 is provided with a second flange 19. The clamping part 9 is fixed to the stop block 7 through the second fixing screw 8. The bottom of the stop block 7 is provided with a first flange 18, and the first flange 18 and the second flange 19 are attached to each other to realize the clamping of the clamping part and the stop block 7. The side surface of the stop block 7 is attached to the side surface of the vertical plate 6. Through such a design, the rotational torque received by the pallet 4 when lifting the roller 3 is transmitted to the vertical plate 6 through the stop block 7 and borne by the vertical plate 6, improving the uneven force on the piston rod, maintaining the force balance of the piston rod 23, reducing the wear of the sealing ring at the end cover 22 of the oil cylinder 13, and extending the service life of the oil cylinder.

[0026] The foregoing has broadly outlined some aspects and features of the various embodiments, which should be construed as merely illustrative of various potential applications. Other beneficial results can be obtained by applying the disclosed information in different ways or by combining various aspects of the disclosed embodiments. Based on the scope defined by the claims, a more comprehensive understanding of other aspects can be obtained by referring to the detailed description of the exemplary embodiments in conjunction with the drawings.

[0027] The above embodiments have described the present utility model in detail. Of course, the above description is not a limitation on the present utility model, and the present utility model is not limited to the above examples either. Changes, modifications, additions, deletions, or substitutions made by those skilled in the art within the scope of the essence of the present utility model also fall within the protection scope of the present utility model.

Claims

1. A moment loading device for verifying an electronic truck scale, characterized in that, The torque loading device includes: a support plate, one end of the support plate is movably connected to the roller at the end of the pressing plate, the middle part of the support plate is fixed to the end of the piston rod at the top of the oil cylinder, the other end of the support plate passes through the vertical plate fixed on one side of the base and is fixedly connected to the stopper. The up and down movement of the piston rod drives the up and down movement of the support plate. At the same time, the support plate drives the pressing plate to rotate around the support plate, and the support plate drives the stopper to move up and down along the vertical plate to maintain the force balance of the piston rod.

2. The moment loading device for the verification of an electronic truck scale according to claim 1, wherein, The support plate is Z-shaped. One end of the support plate is close to the bottom of the oil cylinder and is provided with a convex platform, and the top surface of the convex platform is in rolling contact with the roller at the end of the rock plate.

3. The torque loading device for calibrating an electronic truck scale according to claim 2, characterized in that, The middle part of the support plate is L-shaped. A part of the middle part of the support plate is parallel to the stroke direction of the oil cylinder, and the other part is fixed to the top of the piston rod of the oil cylinder.

4. The torque loading device for calibrating an electronic truck scale according to claim 3, wherein The piston rod is encapsulated in the oil cylinder through an end cover. Outside the top of the oil cylinder, a limiting platform is fixed to the piston rod. The middle part of the support plate is sleeved on the top of the piston rod and is fixed to the limiting platform through a first fixing screw and a locking nut.

5. A torque loading device for calibrating an electronic truck scale according to any one of claims 1 to 4, characterized in that, The bottom of the vertical plate is welded to the base; a through groove is provided in the middle of the vertical plate, and the through groove is parallel to the stroke of the oil cylinder.

6. The torque loading device for calibrating an electronic truck scale according to claim 5, characterized in that, The end of the support plate is provided with a clamping part, and the clamping part passes through the through groove; a second flange is provided at the end of the clamping part; the clamping part is fixed to the stopper through a second fixing screw; a first flange is provided at the bottom of the stopper, and the first flange and the second flange are attached to each other to realize the clamping of the clamping part and the stopper together; the side surface of the stopper is attached to the side surface of the vertical plate.

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