Truck scale with safety protection function

Abstract

The invention belongs to the technical field of truck scales, and particularly discloses a truck scale with a safety protection function, the truck scale comprises a side inclination sensing mechanism, an automatic triggering mechanism and an elastic locking jacking mechanism, the side inclination sensing mechanism comprises a lifting sensing assembly and a side inclination feedback assembly, and the lifting sensing assembly is arranged between a bottom plate and a top plate. By means of the synchronization of stretching and retracting of the two telescopic induction cylinders distributed on the two sides, the side inclination condition of the top plate can be fed back, after the side inclination amplitude of the top plate reaches a certain degree, all sets of elastic locking jacking mechanisms can be unlocked by rotating the valve clack, and therefore the safety of the top plate is improved. In addition, the top supporting stand column can be locked near the position where the top supporting stand column makes contact with the top plate, rigid supporting on the top plate is formed, and further aggravation of side inclination is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of truck scales, and in particular relates to a truck scale with a safety protection function. Background Art

[0002] A truck scale is a ground weighing device used to weigh the weight of a car. For some areas within the factory that are close but not used frequently, a movable truck scale is often used for circulation operations. However, due to the different slope heights at different installation locations, most movable truck scales are equipped with a lifting mechanism.

[0003] In the main structure of a vehicle, sensors and lifting mechanisms are generally the links with relatively weak structural strength. In production practice, there are occasional accidents in which sensors or lifting mechanisms are damaged and collapsed due to various reasons (their own quality problems, vehicle overweight, etc.), causing the roof and the vehicle above to tilt or even overturn as a whole.

[0004] The rollover of a truck scale is generally slow, lasting about 3-5 seconds. If the top plate can be prevented from continuously rolling over within the above time after the sensor or lifting mechanism is damaged, it will significantly improve the safety of the weighing process and reduce personal injury and property loss caused by vehicle rollover. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a truck scale with a safety protection function; according to the principle of weighing, the weight of the top plate and the vehicle needs to act directly on the sensor, so the rigid support mechanism cannot be directly welded under the top plate, which is also the reason why the sensor or lifting mechanism may be damaged and tilt; and for a truck scale with a lifting mechanism, since the top plate may rise and fall during normal use, how to distinguish between normal lifting and abnormal tilting of the top plate, and how to automatically rigidly support the top plate that has just begun to tilt after sensing abnormal tilting, are the main technical problems faced in this field.

[0006] In order to solve this problem, the present invention creatively proposes a roll sensing mechanism, an automatic triggering mechanism and an elastic locking support mechanism. Through the synchronization of the extension and contraction of the two telescopic sensing cylinders distributed on both sides, the roll of the top plate can be fed back. When the roll amplitude of the top plate reaches a certain degree, the rotation of the valve disc can unlock each group of elastic locking support mechanisms, and the support columns can be locked near the position where they contact the top plate, forming a rigid support for the top plate to avoid further aggravation of the roll.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a truck scale with a safety protection function, including a weighing mechanism, the weighing mechanism including a bottom plate, a top plate, a lifting mechanism and a sensor, the sensor is arranged on the lifting mechanism, the lifting mechanism is arranged on the bottom plate, and the top plate is arranged on the sensor.

[0008] Furthermore, it also includes a roll sensing mechanism, an automatic triggering mechanism and an elastic locking support mechanism. The roll sensing mechanism includes a lifting sensing component and a roll feedback component. The lifting sensing component is arranged between the bottom plate and the top plate.

[0009] Through the induction of the lifting sensing component and the feedback of the roll feedback component, the inclination state of the top plate relative to the bottom plate can be fed back. When the inclination of the top plate exceeds a certain range, the automatic trigger mechanism automatically triggers the extension and locking of the elastic locking top support mechanism to provide rigid support for the bottom of the top plate, thereby avoiding further tilting of the top plate and reducing the possibility of rollover of the vehicle above.

[0010] Preferably, the lifting sensing assembly includes a telescopic sensing cylinder and a sensing hose, both ends of the telescopic sensing cylinder are respectively provided with ball joints, the two ends of the telescopic sensing cylinder are respectively connected to the bottom plate and the top plate through ball joints, and the sensing hose is arranged between the telescopic sensing cylinder and the roll feedback tube.

[0011] As a further preferred embodiment of the present invention, the roll feedback assembly includes a roll feedback tube and a through shaft, the roll feedback tube is fixedly connected to the liquid storage assembly through a bracket, the through shaft is snap-fitted and slidably arranged in the roll feedback tube, a disc is provided in the middle position of the through shaft, the roll sensing mechanism is slidably arranged in the roll feedback tube, a first piston is slidably provided at both ends of the through shaft, and a first spring is provided between the first piston and the disc.

[0012] When the two telescopic sensing cylinders extend and retract synchronously, it means that the top plate rises and falls horizontally, and the roll feedback component will not be caused to slide. When the two telescopic sensing cylinders extend and retract asynchronously, it means that the top plate has tilted. At this time, the through shaft will slide out toward one end, thereby driving the automatic trigger mechanism.

[0013] Furthermore, the automatic trigger mechanism includes a liquid storage component and a toggle component, the roll feedback component is arranged on the liquid storage component, and the toggle component is arranged at the top of the liquid storage component.

[0014] Preferably, the liquid storage assembly includes a liquid storage tank and a high-pressure spring, the liquid storage tank is arranged on the bottom plate, the internal locking and sliding of the liquid storage tank is provided with a liquid supply piston, the high-pressure spring is arranged between the bottom of the liquid storage tank and the liquid supply piston, the top of the liquid storage tank is provided with a protrusion, the protrusion is provided with a top boss, the liquid separation joint is rotatably provided on the top boss, and the liquid separation joint is fixedly connected to the protrusion.

[0015] The transmission fluid is stored in the fluid reservoir assembly, and a high pressure spring is used to maintain a high pressure on the transmission fluid. Therefore, when the valve disc rotates open, the liquid in the fluid reservoir will quickly flow into the telescopic unlocking assembly through the liquid distribution joint.

[0016] As a further preferred embodiment of the present invention, the toggle assembly includes a valve disc, a liquid separation joint, a guide rail and a sliding frame, the guide rail is arranged on the liquid storage assembly, the sliding frame is slidably arranged in the guide rail, the sliding frame is fixed on the through shaft, a toggle column is provided in the middle position of the sliding frame, the valve disc is provided with a toggle rod, the toggle rod is provided with a waist-shaped slide groove, the toggle column is slidably arranged in the waist-shaped slide groove, and the liquid separation joint is located above the valve disc.

[0017] When the sliding frame slides along with the through shaft, it can push the valve disc to rotate. In the initial state, the opening on the valve disc does not overlap with the opening on the horizontal slide groove. When the valve disc rotates, no matter what the rotation direction is, there will be an overlapping area between the opening on the valve disc and the opening on the horizontal slide groove. At this time, the liquid in the liquid storage tank can flow into the liquid distribution joint, thereby driving each group of elastic locking support mechanisms.

[0018] Furthermore, the elastic locking support mechanism includes a sliding support assembly, an elastic locking assembly and a telescopic unlocking assembly. The sliding support assembly is arranged on the base plate, the elastic locking assembly array is arranged on both sides of the sliding support assembly, and the telescopic unlocking assembly is arranged on the sliding support assembly; the elastic locking support mechanism is symmetrically arranged on both sides of the base plate.

[0019] Preferably, the sliding support assembly includes a support sleeve, a support column and a support spring, the support sleeve is arranged on the bottom plate, the elastic locking support mechanism is provided with a longitudinal groove, the support column is provided with a longitudinal slide bar, the support column is snap-fitted and slidably arranged in the support sleeve, the longitudinal slide bar is snap-fitted and slidably arranged in the longitudinal groove, the support sleeve is provided with a through transverse slide groove, the top of the support sleeve is also symmetrically provided with a top slide groove, and the support spring is arranged between the bottom of the support sleeve and the support column.

[0020] As a further preferred embodiment of the present invention, the elastic locking assembly includes a locking spring and a locking pin, the locking spring is provided with a blind plate, the blind plate is fixed to the end of the transverse slide groove, the locking pin is provided at the other end of the locking spring, and the locking pin is engaged and slidably provided in the transverse slide groove.

[0021] During the extension of the sliding top support assembly, the elastic locking assembly arranged in the array can continuously increase the locking height of the top support column by gradually locking the bottom of the top support column. Therefore, when the tilting speed of the top plate is uncertain, after the top support column contacts the top plate, it can be locked at a height near the current position, providing effective rigid support for the top plate.

[0022] As a further preferred embodiment of the present invention, the telescopic unlocking assembly includes an extending bracket, which is fixed to the top support sliding sleeve. The extending bracket is provided with an extending sleeve, one end of the extending sleeve is provided with an unlocking hose, and the other end of the unlocking hose is connected to the liquid separation joint. A locking fork frame is provided in the extending sleeve for sliding engagement, and a telescopic part is provided at the end of the locking fork frame, and the telescopic part is provided for sliding engagement in the top slide groove.

[0023] By connecting the unlocking hose and the liquid dispensing joint, when the automatic trigger mechanism is opened, the longitudinal slide groove can slide and release the lock on the top support column, thereby achieving the technical effect that the top support column quickly extends and presses against the top plate under the elastic force of the top support spring.

[0024] The beneficial effects achieved by the present invention using the above structure are as follows: (1) Through the induction of the lifting sensing component and the feedback of the roll feedback component, the tilt state of the top plate relative to the bottom plate can be fed back. When the tilt of the top plate exceeds a certain range, the elastic locking support mechanism is automatically triggered to extend and lock through the automatic trigger mechanism, thereby providing rigid support for the bottom of the top plate, thereby preventing the top plate from tilting further and reducing the possibility of the vehicle above rolling over.

[0025] (2) When the two telescopic sensing cylinders extend and retract synchronously, it means that the top plate rises and falls horizontally, and the roll feedback component will not slide. When the two telescopic sensing cylinders extend and retract asynchronously, it means that the top plate has tilted. At this time, the through shaft will slide out toward one end, thereby driving the automatic trigger mechanism.

[0026] (3) The transmission fluid is stored in the liquid storage assembly, and a high pressure spring is used to maintain a high pressure on the transmission fluid. Therefore, when the valve disc rotates open, the liquid in the liquid storage tank will quickly flow into the telescopic unlocking assembly through the liquid distribution joint.

[0027] (4) When the sliding frame slides along with the through shaft, it can push the valve disc to rotate. In the initial state, the opening on the valve disc does not overlap with the opening on the transverse slide. When the valve disc rotates, no matter what the rotation direction is, there will be an overlapping area between the opening on the valve disc and the opening on the transverse slide. At this time, the liquid in the liquid storage tank can flow into the liquid separation joint, thereby driving each group of elastic locking support mechanisms.

[0028] (5) During the extension of the sliding top support assembly, the elastic locking assembly arranged in the array can continuously increase the locking height of the top support column by gradually locking the bottom of the top support column. Therefore, when the tilting speed of the top plate is uncertain, the top support column can be locked at a height near the current position after contacting the top plate, providing effective rigid support for the top plate.

[0029] (6) By connecting the unlocking hose and the liquid dispensing joint, the longitudinal slide can slide and release the lock on the top support column when the automatic trigger mechanism is turned on, thereby achieving the technical effect that the top support column is quickly extended and pressed against the top plate under the elastic force of the top support spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional diagram of a truck scale with a safety protection function proposed by the present invention; Figure 2 This is a front view of a truck scale with safety protection function proposed by the present invention; Figure 3 This is a left view of a truck scale with a safety protection function proposed by the present invention; Figure 4 for Figure 2 A cross-sectional view along the cutting line AA; Figure 5 for Figure 2 A cross-sectional view along the cutting line BB; Figure 6 for Figure 4 A cross-sectional view along the cutting line CC; Figure 7 This is a schematic diagram of the explosion structure of a truck scale with a safety protection function proposed by the present invention; Figure 8 for Figure 5 A partial enlarged view of point Ⅰ in the middle; Figure 9 for Figure 4 A partial enlarged view of the middle II; Figure 10 for Figure 6 A partial enlarged view of point III in the middle; Figure 11 for Figure 7 A partial enlarged view of the middle IV; Figure 12 for Figure 7 A partial enlarged view of point V in the middle.

[0031] Among them, 1. roll sensing mechanism, 2. automatic triggering mechanism, 3. elastic locking support mechanism, 4. weighing mechanism, 5. lifting sensing assembly, 6. roll feedback assembly, 7. telescopic sensing cylinder, 8. ball joint, 9. sensing hose, 10. roll feedback tube, 11. through shaft, 12. first piston, 13. first spring, 14. disc, 15. liquid storage assembly, 16. toggle assembly, 17. liquid storage tank, 18. high-pressure spring, 19. liquid supply piston, 20. valve disc, 21. liquid distribution joint, 22. guide rail, 23. sliding frame, 24. top boss, 25. toggle lever, 26. Waist-shaped slide, 27. Toggle column, 28. Sliding support assembly, 29. Elastic locking assembly, 30. Telescopic unlocking assembly, 31. Support sliding sleeve, 32. Support column, 33. Support spring, 34. Locking spring, 35. Locking pin, 36. Extending bracket, 37. Extending sleeve, 38. Locking fork frame, 39. Longitudinal slide, 40. Transverse slide, 41. Top slide, 42. Longitudinal slide, 43. Blind plate, 44. Unlocking hose, 45. Telescopic part, 46. Bottom plate, 47. Top plate, 48. Lifting mechanism, 49. Sensor, 50. Protrusion.

[0032] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0035] like Figures 1 to 12 As shown, the present invention proposes a truck scale with a safety protection function, including a weighing mechanism 4, which includes a bottom plate 46, a top plate 47, a lifting mechanism 48 and a sensor 49. The sensor 49 is arranged on the lifting mechanism 48, the lifting mechanism 48 is arranged on the bottom plate 46, and the top plate 47 is arranged on the sensor 49.

[0036] It also includes a roll sensing mechanism 1, an automatic triggering mechanism 2 and an elastic locking support mechanism 3. The roll sensing mechanism 1 includes a lifting sensing component 5 and a roll feedback component 6. The lifting sensing component 5 is arranged between the bottom plate 46 and the top plate 47.

[0037] Through the induction of the lifting sensing component 5 and the feedback of the roll feedback component 6, the tilt state of the top plate 47 relative to the bottom plate 46 can be fed back. When the tilt of the top plate 47 exceeds a certain range, the automatic trigger mechanism 2 automatically triggers the extension and locking of the elastic locking support mechanism 3 to provide rigid support for the bottom of the top plate 47, thereby avoiding further tilting of the top plate 47 and reducing the possibility of the vehicle above rolling over.

[0038] The lifting sensing assembly 5 includes a telescopic sensing cylinder 7 and a sensing hose 9. Ball joints 8 are respectively provided at both ends of the telescopic sensing cylinder 7. The two ends of the telescopic sensing cylinder 7 are respectively connected to the bottom plate 46 and the top plate 47 through the ball joints 8. The sensing hose 9 is arranged between the telescopic sensing cylinder 7 and the roll feedback tube 10.

[0039] The roll feedback assembly 6 includes a roll feedback tube 10 and a through shaft 11. The roll feedback tube 10 is fixed to the liquid storage assembly 15 through a bracket. The through shaft 11 is slidably arranged in the roll feedback tube 10. A disc 14 is provided in the middle position of the through shaft 11. The roll sensing mechanism 1 is slidably arranged in the roll feedback tube 10. A first piston 12 is slidably provided at both ends of the through shaft 11. A first spring 13 is provided between the first piston 12 and the disc 14.

[0040] When the two telescopic sensing cylinders 7 extend and retract synchronously, it means that the top plate 47 rises and falls horizontally, and the sliding of the roll feedback component 6 will not be caused at this time. When the extension and retraction of the two telescopic sensing cylinders 7 are not synchronized, it means that the top plate 47 has tilted. At this time, the through shaft 11 will slide out toward one end, thereby driving the automatic trigger mechanism 2.

[0041] The automatic trigger mechanism 2 includes a liquid storage component 15 and a toggle component 16 . The roll feedback component 6 is disposed on the liquid storage component 15 , and the toggle component 16 is disposed on the top of the liquid storage component 15 .

[0042] The liquid storage assembly 15 includes a liquid storage tank 17 and a high-pressure spring 18. The liquid storage tank 17 is arranged on the bottom plate 46. A liquid supply piston 19 is slidably engaged inside the liquid storage tank 17. The high-pressure spring 18 is arranged between the bottom of the liquid storage tank 17 and the liquid supply piston 19. A protrusion 50 is provided on the top of the liquid storage tank 17, and a top boss 24 is provided on the protrusion 50. The liquid separation joint 21 is rotatably provided on the top boss 24, and the liquid separation joint 21 is fixedly connected to the protrusion 50.

[0043] The liquid storage assembly 15 stores transmission fluid, and the high-pressure spring 18 can maintain a high pressure for the transmission fluid. Therefore, when the valve flap 20 rotates open, the liquid in the liquid storage tank 17 will quickly flow into the telescopic unlocking assembly 30 through the liquid distribution joint 21.

[0044] The toggle assembly 16 includes a valve disc 20, a liquid separation joint 21, a guide rail 22 and a sliding frame 23. The guide rail 22 is arranged on the liquid storage assembly 15. The sliding frame 23 is slidably arranged in the guide rail 22. The sliding frame 23 is fixed to the through shaft 11. A toggle column 27 is provided in the middle position of the sliding frame 23. A toggle rod 25 is provided on the valve disc 20. The toggle rod 25 is provided with a waist-shaped slide groove 26. The toggle column 27 is slidably arranged in the waist-shaped slide groove 26. The liquid separation joint 21 is located above the valve disc 20.

[0045] When the sliding frame 23 slides along with the through shaft 11, it can push the valve disc 20 to rotate. In the initial state, the opening on the valve disc 20 does not overlap with the opening on the transverse slide groove 40. When the valve disc 20 rotates, no matter what the rotation direction is, there will be an overlapping area between the opening on the valve disc 20 and the opening on the transverse slide groove 40. At this time, the liquid in the liquid storage tank 17 can flow into the liquid separation joint 21, thereby driving each group of elastic locking support mechanisms 3.

[0046] The elastic locking support mechanism 3 includes a sliding support assembly 28, an elastic locking assembly 29 and a telescopic unlocking assembly 30. The sliding support assembly 28 is arranged on the base plate 46, the elastic locking assembly 29 is arranged in an array on both sides of the sliding support assembly 28, and the telescopic unlocking assembly 30 is arranged on the sliding support assembly 28; the elastic locking support mechanism 3 is symmetrically arranged on both sides of the base plate 46.

[0047] The sliding support assembly 28 includes a support sleeve 31, a support column 32 and a support spring 33. The support sleeve 31 is arranged on the base plate 46. The elastic locking support mechanism 3 is provided with a longitudinal slide groove 39. The support column 32 is provided with a longitudinal slide bar 42. The support column 32 is engaged and slidably arranged in the support sleeve 31. The longitudinal slide bar 42 is engaged and slidably arranged in the longitudinal slide groove 39. The support sleeve 31 is provided with an array of through transverse slide grooves 40. The top of the support sleeve 31 is also symmetrically provided with a top slide groove 41. The support spring 33 is arranged between the bottom of the support sleeve 31 and the support column 32.

[0048] The elastic locking assembly 29 includes a locking spring 34 and a locking pin 35. A blind plate 43 is provided on the locking spring 34. The blind plate 43 is fixed to the end of the transverse slide groove 40. The locking pin 35 is provided at the other end of the locking spring 34. The locking pin 35 is engaged and slidably arranged in the transverse slide groove 40.

[0049] During the extension of the sliding support assembly 28, the elastic locking assembly 29 arranged in an array can continuously increase the locking height of the support column 32 by gradually locking the bottom of the support column 32. Therefore, when the tilting speed of the top plate 47 is uncertain, after the support column 32 contacts the top plate 47, it can be locked at a height near the current position, providing effective rigid support for the top plate 47.

[0050] The telescopic unlocking assembly 30 includes an extending bracket 36, which is fixed to the top support sliding sleeve 31. A protruding sleeve 37 is provided on the extending bracket 36. An unlocking hose 44 is provided at one end of the extending sleeve 37. The other end of the unlocking hose 44 is connected to the liquid separation joint 21. A locking fork frame 38 is provided in the extending sleeve 37 for engagement and sliding. A telescopic part 45 is provided at the end of the locking fork frame 38. The telescopic part 45 is engaged and slidably provided in the top slide groove 41.

[0051] By connecting the unlocking hose 44 and the liquid dispensing connector 21, when the automatic trigger mechanism 2 is opened, the longitudinal slide groove 39 can slide and release the lock on the support column 32, thereby achieving the technical effect that the support column 32 is quickly extended and pressed against the top plate 47 under the elastic force of the support spring 33.

[0052] During specific use, the truck scale can be moved to the target position by installing moving wheels at the bottom of the bottom plate 46 or using other auxiliary moving tools. When in use, the bottom plate 46 needs to contact and be fixed on the foundation pit or the hardened ground. By lifting and lowering the lifting mechanism 48, the top plate 47 can be adjusted to the same height as the slopes at both ends and then locked, so that the vehicle can drive up or off the top plate 47 along the slope; if multiple top plates 47 need to be spliced, then the sensor 49 is generally set at the connection between the two top plates 47.

[0053] Generally speaking, the length of a vehicle is much greater than its width, so the vehicle is prone to rollover when tilting. When the front and rear heights are different, the vehicle is more stable. Therefore, the two telescopic sensing cylinders 7 are located on both sides of the top plate 47 (rather than at both ends), and the elastic locking support mechanism 3 is also distributed along both sides of the top plate 47 with an appropriate number and density.

[0054] When the top plate 47 is raised or lowered in parallel, the two telescopic sensing cylinders 7 extend or shorten synchronously. At this time, the amount of liquid inflow at both ends of the roll feedback tube 10 is the same, so the amplitude of the sliding of the two first pistons 12 toward the center position and the compression amount of the two first springs 13 are also the same. At this time, the disc 14 is maintained in the middle position and the through shaft 11 does not slide.

[0055] During normal weighing, the weight of the vehicle is transferred to the sensor 49 through the top plate 47, and the vehicle weight is calculated and weighed; the vehicle rolls over on the top plate 47 at a relatively slow speed, generally for 3-5 seconds. When the roll amplitude is small, if the roll can be stopped in time, it is possible to avoid the vehicle from rolling over.

[0056] When the top plate 47 tilts, the extension and contraction of the two telescopic sensing cylinders 7 become out of sync. At this time, since the sliding amounts of the two first pistons 12 toward the center are no longer the same, and the disc 14 has the characteristic of being maintained between the two first pistons 12, the through shaft 11 slides toward one end of the roll feedback tube 10. When the roll feedback tube 10 slides with the sliding frame 23, it can push the valve disc 20 to rotate. In the initial state, the opening on the valve disc 20 does not overlap with the opening on the transverse chute 40. When the valve disc 20 rotates, regardless of the rotation direction, as long as the rotation amplitude exceeds a certain range, the opening on the valve disc 20 and the opening on the transverse chute 40 will overlap. At this time, the liquid in the liquid storage tank 17 can quickly flow into the liquid dispensing joint 21, and then enter the extension sleeve 37 through the unlocking hose 44; and push the locking fork frame 38 to extend; In the initial state, the locking fork 38 locks the position of the supporting column 32 by pressing the longitudinal slide 42 with its own boss. When the locking fork 38 slides away, the supporting column 32 will quickly extend under the elastic force of the supporting spring 33 until it contacts the bottom of the top plate 47. When the side of the longitudinal slide 42 leaves the locking pin 35, the locking pin 35 will partially extend from the transverse slide 40 under the elastic force of the locking spring 34; as the supporting column 32 slides upward, the locking pins 35 on both sides will extend from bottom to top in sequence, thereby ensuring that the supporting column 32 can be locked at a height close to the contact with the top plate 47; This locking method of gradually reducing the maximum retraction amplitude can lock the support column 32 at a height close to the contact height of the top plate 47 when factors such as the height and tilting speed of the top plate 47 are different, thereby providing effective rigid support for the top plate 47.

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0058] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A truck scale with a safety protection function, comprising a weighing mechanism (4), wherein the weighing mechanism (4) comprises a bottom plate (46) and a top plate (47), and is characterized in that: The invention also includes a roll sensing mechanism (1), an automatic triggering mechanism (2) and an elastic locking support mechanism (3), wherein the roll sensing mechanism (1) includes a lifting sensing component (5) and a roll feedback component (6), wherein the lifting sensing component (5) is arranged between the bottom plate (46) and the top plate (47), and the automatic triggering mechanism (2) includes a liquid storage component (15) and a toggle component (16), wherein the roll feedback component (6) is arranged on the liquid storage component (15), and the toggle component (16) is arranged on the top of the liquid storage component (15); The elastic locking support mechanism (3) comprises a sliding support assembly (28), an elastic locking assembly (29) and a telescopic unlocking assembly (30), wherein the sliding support assembly (28) is arranged on a bottom plate (46), the elastic locking assembly (29) is arranged in an array on both sides of the sliding support assembly (28), and the telescopic unlocking assembly (30) is arranged on the sliding support assembly (28).

2. The truck scale with safety protection function according to claim 1, characterized in that: The roll feedback assembly (6) comprises a roll feedback tube (10) and a through shaft (11), wherein the roll feedback tube (10) is fixedly connected to the liquid storage assembly (15) via a bracket, the through shaft (11) is slidably arranged in the roll feedback tube (10), a disc (14) is provided at the middle position of the through shaft (11), the roll sensing mechanism (1) is slidably arranged in the roll feedback tube (10), a first piston (12) is slidably provided at both ends of the through shaft (11), and a first spring (13) is provided between the first piston (12) and the disc (14).

3. The truck scale with safety protection function according to claim 2, characterized in that: The toggle assembly (16) includes a valve disc (20), a liquid separation joint (21), a guide rail (22) and a sliding frame (23), wherein the guide rail (22) is provided on the liquid storage assembly (15), the sliding frame (23) is slidably provided in the guide rail (22), the sliding frame (23) is fixedly connected to the through shaft (11), a toggle column (27) is provided at the middle position of the sliding frame (23), the valve disc (20) is provided with a toggle rod (25), the toggle rod (25) is provided with a waist-shaped slide groove (26), the toggle column (27) is slidably provided in the waist-shaped slide groove (26), and the liquid separation joint (21) is located above the valve disc (20).

4. The truck scale with safety protection function according to claim 3, characterized in that: The lifting sensing assembly (5) comprises a telescopic sensing cylinder (7) and a sensing hose (9), wherein both ends of the telescopic sensing cylinder (7) are respectively provided with ball joints (8), and the two ends of the telescopic sensing cylinder (7) are respectively connected to the bottom plate (46) and the top plate (47) through the ball joints (8), and the sensing hose (9) is provided between the telescopic sensing cylinder (7) and the roll feedback tube (10).

5. The truck scale with safety protection function according to claim 4, characterized in that: The liquid storage assembly (15) includes a liquid storage box (17) and a high-pressure spring (18). The liquid storage box (17) is arranged on a bottom plate (46). A liquid supply piston (19) is provided in a sliding manner inside the liquid storage box (17). The high-pressure spring (18) is provided between the bottom of the liquid storage box (17) and the liquid supply piston (19). A protrusion (50) is provided on the top of the liquid storage box (17). A top boss (24) is provided on the protrusion (50). The liquid separation joint (21) is rotatably provided on the top boss (24). The liquid separation joint (21) is fixed to the protrusion (50).

6. The truck scale with safety protection function according to claim 5, characterized in that: The elastic locking support mechanism (3) is symmetrically arranged on both sides of the bottom plate (46).

7. The truck scale with safety protection function according to claim 6, characterized in that: The sliding support assembly (28) includes a support sleeve (31), a support column (32) and a support spring (33), the support sleeve (31) is arranged on the bottom plate (46), the elastic locking support mechanism (3) is provided with a longitudinal slide groove (39), the support column (32) is provided with a longitudinal slide bar (42), the support column (32) is engaged and slidably arranged in the support sleeve (31), the longitudinal slide bar (42) is engaged and slidably arranged in the longitudinal slide groove (39), the support sleeve (31) is provided with a through array of transverse slide grooves (40), the top of the support sleeve (31) is also symmetrically provided with a top slide groove (41), and the support spring (33) is arranged between the bottom of the support sleeve (31) and the support column (32).

8. The truck scale with safety protection function according to claim 7, characterized in that: The elastic locking assembly (29) includes a locking spring (34) and a locking pin (35), wherein a blind plate (43) is provided on the locking spring (34), and the blind plate (43) is fixed to the end of the transverse slide groove (40), and the locking pin (35) is provided at the other end of the locking spring (34), and the locking pin (35) is engaged and slidably provided in the transverse slide groove (40).

9. The truck scale with safety protection function according to claim 8, characterized in that: The telescopic unlocking assembly (30) includes an extending bracket (36), the extending bracket (36) is fixed to the top support sliding sleeve (31), the extending bracket (36) is provided with an extending sleeve (37), one end of the extending sleeve (37) is provided with an unlocking hose (44), the other end of the unlocking hose (44) is connected to the liquid separation joint (21), a locking fork frame (38) is provided in the extending sleeve (37) for engagement and sliding, and a telescopic part (45) is provided at the end of the locking fork frame (38), and the telescopic part (45) is engaged and slidably provided in the top slide groove (41).

10. The truck scale with safety protection function according to claim 9, characterized in that: The weighing mechanism (4) further comprises a lifting mechanism (48) and a sensor (49), wherein the sensor (49) is arranged on the lifting mechanism (48), the lifting mechanism (48) is arranged on the bottom plate (46), and the top plate (47) is arranged on the sensor (49).

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