Wagon balance without foundation pit

Abstract

The invention relates to the technical field of wagon balances, in particular to a foundation-pit-free wagon balance which comprises a bottom plate, inclined slope blocks are arranged at the two ends of the bottom plate respectively, a bearing structure is arranged on the bottom plate, a control structure is connected between the bearing structure and the bottom plate, a driving structure is arranged on the inner side of the control structure, and supporting structures are arranged on the two sides of the bottom plate respectively. The supporting structure is connected with a releasing structure, and the bottom side of the bottom plate is connected with a moving structure. The weighing sensor can be conveniently replaced or maintained through the bearing structure, meanwhile, normal work of the wagon balance is guaranteed, lifting of the bearing plate can be supported through the control structure, meanwhile, the overall height of the wagon balance is reduced, the bearing plate can be lifted in a more labor-saving mode through the driving structure, and the weight of the wagon balance is reduced. The influence of deformation and the like on the bearing plate when a truck runs to the bearing plate can be reduced through the supporting structure, the supporting structure can be automatically reset through the releasing structure, and the wagon balance can be conveniently moved through the moving structure.

Description

Technical Field

[0001] The present invention relates to the technical field of weighbridges, and more specifically, to a pitless weighbridge. Background Art

[0002] A weighbridge, also known as a truck scale, is a large weighing scale installed on the ground, usually used to weigh the tonnage of goods carried by trucks. It is the main weighing equipment used by factories, mines, merchants, etc. for measuring bulk goods. According to the installation method, weighbridges can be divided into pit weighbridges and pitless weighbridges. Among them, the installation of a pitless weighbridge does not require pre-excavating a foundation pit, which is convenient for transferring the installation location of the weighbridge and is more flexible to use.

[0003] However, when replacing or repairing the weighing sensors of existing pitless weighbridges, tools such as jacks are usually required to lift the load-bearing plate. This is not only inconvenient to operate but may also cause the load-bearing plate to shift, thereby affecting the subsequent weighing of the weighbridge. At the same time, when the weighbridge is working, the truck will move from one end of the load-bearing plate to the other side, which causes one end of the load-bearing plate to be subjected to pressure first, resulting in uneven stress at both ends of the load-bearing plate. Long-term use may also cause deformation or displacement of the load-bearing plate. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a pitless weighbridge.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a pitless weighbridge, including a bottom plate, inclined slope blocks are respectively provided at both ends of the bottom plate, a load-bearing structure is provided on the bottom plate, a control structure is connected between the load-bearing structure and the bottom plate, a driving structure is provided inside the control structure, support structures are respectively provided on both sides of the bottom plate, a release structure is connected to the support structure, and a moving structure is connected to the bottom side of the bottom plate.

[0006] Specifically, the load-bearing structure includes a load-bearing plate. The load-bearing plate is provided on the top side of the bottom plate. An offset groove is opened on the bottom side of the load-bearing plate. Two lifting rotating shafts are provided on the bottom side of the load-bearing plate. One of the lifting rotating shafts is slidably connected to the load-bearing plate through the offset groove, and the other lifting rotating shaft is rotatably connected to the load-bearing plate. A lifting rod is rotatably connected to both sides of the lifting rotating shaft. A threaded block is rotatably connected to the end of the lifting rod. A lifting bracket is provided between the bottom plate and the load-bearing plate. The side surface of the threaded block is slidably connected to the lifting bracket. A driving screw rod is rotatably connected to the middle of the lifting bracket. The threaded block is threadedly connected to the driving screw rod.

[0007] Specifically, the thread directions on both sides of the driving screw rod are set in the opposite direction. A plurality of guide rods are vertically and fixedly connected to the bottom plate. The lifting bracket is slidably connected to the guide rods. A plurality of weighing sensors are installed between the bottom plate and the load-bearing plate.

[0008] Specifically, the control structure includes a driving shaft, two ends of the driving screw are respectively fixedly connected to a driving shaft, a control rod is rotatably connected to the driving shaft, the end of the lifting bracket is slidably connected to an inclined slider, one end of the inclined slider is a hemispherical structure, and the other end of the inclined slider is a triangular structure, a positioning groove is provided on the side of the control rod, and the spherical end of the inclined slider is in conflict with the control rod through the positioning groove, and the lifting bracket is respectively provided with a telescopic block on both sides of the inclined slider, the two telescopic blocks are slidably connected to the lifting bracket, and a first spring is fixedly connected between the two telescopic blocks, and the telescopic block is slidably connected to the inclined slider through the inclined surface set on the same side of the inclined slider.

[0009] Specifically, the driving structure includes a ratchet block, which is slidably connected to the inner side of the control rod, and a plurality of ratchet grooves are provided on the side of the driving shaft. The end of the ratchet block is fixedly connected to a traction slide rod, and the end of the traction slide rod is slidably connected to an inner slide rod, a seventh spring is fixedly connected between the inner slide rod and the ratchet block, and the inner slide rod is slidably connected to the inner side of the control rod.

[0010] Specifically, two positioning columns are fixedly connected to the two ends of the lifting bracket, and the two positioning columns on the same side are respectively arranged on both sides of the driving shaft. An arc groove is provided on the side of the control rod close to the lifting bracket, and the radius of the arc groove is equal to the distance between the positioning column and the driving shaft. A fixing groove is provided on the side of the inner sliding rod, and the fixing groove has a "T"-shaped structure. The inner sliding rod is engaged with the positioning column through the fixing groove.

[0011] Specifically, the supporting structure includes a load-bearing slide bar, and two sides of the base plate are respectively slidably connected to a load-bearing slide bar, one end of the load-bearing slide bar is slidably connected to a positioning block, the end of the positioning block is an inclined structure, a third spring is fixedly connected between the positioning block and the load-bearing slide bar, a slot is provided on the inner side of the base plate, and a resistance block is fixedly connected to the bottom side of the load-bearing plate, the resistance block resists against the end of the load-bearing slide bar arranged on the same side, and a return spring is connected between the load-bearing slide bar and the base plate.

[0012] Specifically, two sides of the base plate are rotatably connected to a first pressure plate, the bottom side of the first pressure plate is slidably connected to a pressure rod, the pressure rod is vertically arranged, a second spring is fixedly connected between the pressure rod and the base plate, the bottom end of the pressure rod is rotatably connected to a first pulley, a bevel groove is provided in the middle of the load-bearing slide rod, and the side surface of the first pulley is in contact with the load-bearing slide rod through the bevel groove.

[0013] Specifically, the release structure includes a pulling plate. A pulling plate is provided on each side of the bottom plate. The pulling plate is slidably connected to the inner side of the bottom plate. A receiving groove is formed at the end of the pulling plate. The bottom plate is slidably connected with a release block through a clamping groove. A fifth spring is fixedly connected between the release block and the bottom plate. The bottom end of the release block is of an arc-shaped structure. The bottom end of the release block abuts against the pulling plate through the receiving groove.

[0014] Specifically, a second pressing plate is rotatably connected to each side of the bottom plate. A connecting rod is rotatably connected to the bottom side of the second pressing plate. The bottom end of the connecting rod is rotatably connected to the side surface of the pulling plate. A fourth spring is fixedly connected between the end of the pulling plate and the bottom plate.

[0015] Specifically, the moving structure includes a handle. A handle is fixedly connected to one end of the bottom plate. A rocker is rotatably connected to the other end of the bottom plate. Threaded structures with opposite directions are provided on both sides of the rocker. A pushing block is threadedly connected to each side of the rocker. The pushing block is slidably connected to the inner side of the bottom plate. An installation block is vertically provided on the side surface of the pushing block. The top end of the installation block is of an inclined surface structure. The inclined surface side of the installation block abuts against the pushing block. A sixth spring is fixedly connected between the installation block and the bottom plate. The bottom end of the installation block is rotatably connected to a second pulley.

[0016] The beneficial effects of the present invention are as follows: (1) For the pitless weighbridge of the present invention, a load-bearing structure is provided on the bottom plate. A control structure is connected between the load-bearing structure and the bottom plate. A driving structure is provided inside the control structure. Through the load-bearing structure, the replacement or repair of the load cell can be conveniently carried out, and at the same time, the normal operation of the weighbridge is ensured. Through the control structure, the lifting of the load-bearing plate can be supported, and at the same time, the overall height of the weighbridge is reduced. Through the driving structure, the load-bearing plate can be lifted more labor-savingly.

[0017] (2) For the pitless weighbridge of the present invention, support structures are provided on both sides of the bottom plate. The support structures are connected with a release structure. Through the support structure, the influence such as deformation of the load-bearing plate caused when the truck drives onto the load-bearing plate can be reduced. Through the release structure, the support structure can be automatically reset, which is convenient for subsequent measurement.

[0018] (3) For the pitless weighbridge of the present invention, a moving structure is connected to the bottom side of the bottom plate. Through the moving structure, the weighbridge can be conveniently moved, which is convenient for changing the deployment position of the weighbridge. Description of the Drawings

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] Figure 1Schematic diagram of the overall structure provided by the present invention; Figure 2 Schematic diagram of the connection structure between the bottom plate and the bearing plate of the present invention; Figure 3 For Figure 2 Schematic diagram of the enlarged structure of part A shown in; Figure 4 Schematic diagram of the connection structure between the bottom plate and the inclined slope block of the present invention; Figure 5 For Figure 4 Schematic diagram of the enlarged structure of part B shown in; Figure 6 Schematic diagram of the connection structure between the lifting bracket and the threaded block of the present invention; Figure 7 For Figure 6 Schematic diagram of the enlarged structure of part C shown in; Figure 8 Schematic diagram of the connection structure between the control rod and the lifting bracket of the present invention; Figure 9 Schematic diagram of the structure of the control rod of the present invention; Figure 10 Schematic diagram of the connection structure between the bearing plate and the first pressing plate of the present invention; Figure 11 For Figure 10 Schematic diagram of the enlarged structure of part D shown in; Figure 12 For Figure 10 Schematic diagram of the enlarged structure of part E shown in; Figure 13 Schematic diagram of the structure of the bearing slide bar of the present invention; Figure 14 Schematic diagram of the connection structure between the control rod and the bottom plate of the present invention; Figure 15 For Figure 14 Schematic diagram of the enlarged structure of part F shown in; Figure 16 Schematic diagram of the connection structure between the rocker and the bottom plate of the present invention.

[0021] In the figure: 1. Bottom plate; 2. Inclined slope block; 3. Bearing structure; 301. Bearing plate; 302. Lifting rotating shaft; 303. Offset groove; 304. Driving screw; 305. Lifting rod; 306. Threaded block; 307. Lifting bracket; 308. Weighing sensor; 309. Guide rod; 4. Control structure; 401. Control rod; 402. Driving shaft; 403. Positioning groove; 404. Telescopic block; 405. First spring; 406. Inclined plane slider; 5. Support structure; 501. First pressing plate; 502. Contact block; 503. Pressure rod; 504. Second spring; 505. First pulley; 506. Bearing sliding rod; 507. Inclined plane groove; 508. Positioning block; 509. Third spring; 510. Card slot; 511. Return spring; 6. Release structure; 601. Second pressing plate; 602. Pulling plate; 603. Accommodation groove; 604. Release block; 605. Fourth spring; 606. Connecting rod; 607. Fifth spring; 7. Moving structure; 701. Rocker; 702. Handle; 703. Mounting block; 704. Sixth spring; 705. Second pulley; 706. Pushing block; 8. Driving structure; 801. Inner sliding rod; 802. Ratchet groove; 803. Ratchet tooth block; 804. Traction sliding rod; 805. Seventh spring; 806. Fixed groove; 807. Positioning column; 808. Arc groove. Detailed implementation manners

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0023] As Figure 2 , Figure 3 , Figure 11 , Figure 16 As shown in

[0024] Specifically, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 14As shown in the figure, the bearing structure 3 includes a bearing plate 301. The bearing plate 301 is provided on the top side of the bottom plate 1. An offset groove 303 is formed on the bottom side of the bearing plate 301. Two lifting rotating shafts 302 are provided on the bottom side of the bearing plate 301. One of the lifting rotating shafts 302 is slidably connected to the bearing plate 301 through the offset groove 303, and the other lifting rotating shaft 302 is rotatably connected to the bearing plate 301. One lifting rod 305 is rotatably connected to each side of the lifting rotating shaft 302. The end of the lifting rod 305 is rotatably connected to a threaded block 306. A lifting bracket 307 is provided between the bottom plate 1 and the bearing plate 301. The side surface of the threaded block 306 is slidably connected to the lifting bracket 307. A driving screw 304 is rotatably connected to the middle of the lifting bracket 307. The threaded block 306 is threadedly connected to the driving screw 304. The thread directions on both sides of the driving screw 304 are set in opposite directions. A plurality of guide rods 309 are vertically and fixedly connected to the bottom plate 1. The lifting bracket 307 is slidably connected to the guide rods 309. A plurality of weighing sensors 308 are installed between the bottom plate 1 and the bearing plate 301; A bearing plate 301 for carrying a truck is provided on the top side of the bottom plate 1. When the truck travels to the surface of the bearing plate 301 through the inclined slope blocks 2 on both sides, the weighing sensors 308 on the bottom side of the bearing plate 301 can obtain the weighing data of the truck. When replacing or repairing the weighing sensors 308, the bearing plate 301 needs to be lifted appropriately. At this time, the user can rotate the driving screw 304 inside the lifting bracket 307 on the bottom side of the bearing plate 301, so that the threaded blocks 306 on both sides of the driving screw 304 move towards the middle along the lifting bracket 307. The threaded block 306 drives the lifting rod 305 on the side to rotate, and finally the bearing plate 301 is lifted through the lifting rotating shaft 302 at the end of the lifting rod 305. At this time, the user can take out the weighing sensor 308 between the bearing plate 301 and the bottom plate 1. During this process, in order to ensure that the bearing plate 301 will not shift in position after the repair is completed, for the two lifting rotating shafts 302 at both ends of the bearing plate 301, one is rotatably connected to the bearing plate 301, and the other lifting rotating shaft 302 is slidably connected to the bearing plate 301 through the offset groove 303, so as to ensure that the user can lift either end of the bearing plate 301 without causing deformation of the bearing plate 301. At the same time, the lifting bracket 307 is slidably connected to the bottom plate 1 through the guide rods 309, so that the bearing plate 301 will not shift in position after resetting, ensuring the normal operation of the weighing scale.

[0025] Specifically, such as Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 14As shown, the control structure 4 includes a drive shaft 402. Both ends of the drive screw 304 are fixedly connected to a drive shaft 402 respectively. A control rod 401 is rotatably connected to the drive shaft 402. The end of the lifting bracket 307 is slidably connected to an inclined plane slider 406. One end of the inclined plane slider 406 is in a hemispherical structure, and the other end of the inclined plane slider 406 is in a triangular structure. A positioning groove 403 is formed on the side surface of the control rod 401. The spherical end of the inclined plane slider 406 abuts against the control rod 401 through the positioning groove 403. On both sides of the inclined plane slider 406 of the lifting bracket 307, a telescopic block 404 is provided respectively. The two telescopic blocks 404 are slidably connected to the lifting bracket 307, and a first spring 405 is fixedly connected between the two telescopic blocks 404. The telescopic block 404 is slidably connected to the inclined plane slider 406 through the inclined plane arranged on the same side of the inclined plane slider 406; For a pitless weighbridge, the weighbridge is directly arranged on the ground surface, which enables the truck to reach the surface of the load-bearing plate 301 for weighing by means of the inclined plane slope block 2. In order to reduce the height of the load-bearing plate 301, a pair of telescopic blocks 404 are provided at both ends of the lifting bracket 307 respectively. When the control rod 401 at the end of the lifting bracket 307 is rotated, the positioning groove 403 on the control rod 401 disengages from the end of the inclined plane slider 406, causing the inclined plane slider 406 to slide inward and push out the two telescopic blocks 404 on both sides through the inclined plane structures on both sides. At this time, the telescopic block 404 abuts against the bottom plate 1, so that the lifting bracket 307 can be supported, ensuring the support for the height lifting of the load-bearing plate 301. When the control rod 401 is reset and the telescopic block 404 retracts, the lifting bracket 307 can slide to the bottom side of the bottom plate 1 without interfering with the weighing of the weighbridge.

[0026] Specifically, such as Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown, the drive structure 8 includes a ratchet block 803. The ratchet block 803 is slidably connected to the inner side of the control rod 401. A plurality of ratchet grooves 802 are formed on the side surface of the drive shaft 402. The end of the ratchet block 803 is fixedly connected to a traction slide rod 804. The end of the traction slide rod 804 is slidably connected to an inner slide rod 801. A seventh spring 805 is fixedly connected between the inner slide rod 801 and the ratchet block 803. The inner slide rod 801 is slidably connected to the inner side of the control rod 401. Two positioning columns 807 are respectively fixedly connected to both ends of the lifting bracket 307. The two positioning columns 807 on the same side are respectively arranged on both sides of the drive shaft 402. An arc groove 808 is formed on the side of the control rod 401 close to the lifting bracket 307. The radius of the arc groove 808 is equal to the distance between the positioning column 807 and the drive shaft 402. A fixing groove 806 is formed on the side surface of the inner slide rod 801. The fixing groove 806 is in a "T" shape. The inner slide rod 801 is engaged with the positioning column 807 through the fixing groove 806; To facilitate the driving of the driving screw 304, a ratchet block 803 is provided inside the control rod 401. When the user slides the inner sliding rod 801 on the side of the control rod 401, the end of the inner sliding rod 801 will push the ratchet block 803 to slide towards the drive shaft 402 through the seventh spring 805 at the end. At this time, when the control rod 401 is rotated, the drive shaft 402 can be driven to rotate through the meshing effect between the ratchet block 803 and the ratchet groove 802 on the drive shaft 402. Due to the structural characteristics of the ratchet block 803 and the ratchet groove 802, the user can drive the driving screw 304 to rotate by repeatedly rotating the control rod 401 within a certain range, which is relatively labor-saving to achieve the lifting of the bearing plate 301. On the other hand, the ratchet grooves 802 opened on the two drive shafts 402 provided at both ends of the same lifting bracket 307 are arranged in the opposite direction. This enables the two control rods 401 on both sides of the same lifting bracket 307 to control the two rotation directions of the same driving screw 304, thereby controlling the lifting and lowering of the lifting plate. And when the control rod 401 rotates, the two telescopic blocks 404 on the same side will extend and support the lifting bracket 307. To ensure that both ends of the lifting bracket 307 have a stable supporting effect, before rotating the driving screw 304, the user needs to rotate both control rods 401 on both sides by 180°. At the same time, to fix the position of the control rod 401, a fixing groove 806 is provided on the side of the inner sliding rod 801. Only when the inner sliding rod 801 is forced to slide towards the drive shaft 402, the arc-shaped part of the fixing groove 806 will communicate with the arc groove 808 on the side of the control rod 401. At this time, the positioning post 807 can slide in the arc groove 808 and the fixing groove 806. When the positioning post 807 slides into the fixing groove 806, releasing the inner sliding rod 801 can make the positioning post 807 engage with the inner sliding rod 801, thereby fixing the position of the control rod 401, and the ratchet block 803 will be in a disengaged state from the ratchet groove 802, ensuring that when the operator rotates one control rod 401, the other control rod 401 can maintain the rotation position, which is convenient for operation.

[0027] Specifically, such as Figure 1 、 Figure 10 、 Figure 11 、 Figure 13As shown, the support structure 5 includes a bearing slide bar 506, and a bearing slide bar 506 is slidably connected to each of the two sides of the bottom plate 1, and a positioning block 508 is slidably connected to one end of the bearing slide bar 506, and the end of the positioning block 508 is an inclined structure, and a third spring 509 is fixedly connected between the positioning block 508 and the bearing slide bar 506, and a card slot 510 is provided on the inner side of the bottom plate 1, and a resistance block 502 is fixedly connected to the bottom side of the bearing plate 301, and the resistance block 502 is in resistance to the end of the bearing slide bar 506 arranged on the same side. A return spring 511 is connected between the bearing slide bar 506 and the bottom plate 1, and a first pressure plate 501 is rotatably connected to both sides of the bottom plate 1. A pressure rod 503 is slidably connected to the bottom side of the first pressure plate 501. The pressure rod 503 is vertically arranged. A second spring 504 is fixedly connected between the pressure rod 503 and the bottom plate 1. A first pulley 505 is rotatably connected to the bottom end of the pressure rod 503. An inclined groove 507 is provided in the middle of the bearing slide bar 506. The side of the first pulley 505 contacts the bearing slide bar 506 through the inclined groove 507. A raised portion is respectively provided on both sides of the bottom plate 1 and is horizontally aligned with the surface of the load-bearing plate 301. When the truck travels on the inclined slope block 2 without contacting the load-bearing plate 301, the abutment block 502 on the bottom side of the load-bearing plate 301 will abut against the load-bearing slide bar 506, so that the load-bearing plate 301 is supported by the load-bearing slide bar 506 at this time. As the truck travels to the surface of the load-bearing plate 301, the weight of the truck is still supported by the load-bearing slide bar 506, and the load-bearing plate 301 will not rise or fall due to the rigid support of the load-bearing slide bar 506, that is, when the load-bearing plate 301 is directly supported by the weighing sensor 308, the deformation and offset that may be caused by the drop of the force-bearing end of the load-bearing plate 301 is avoided. Then the truck continues to travel, and the front wheels of the truck will move to the raised portion of the bottom plate 1. At this time, the weight of the truck is fully supported by the bottom plate 1, and As the truck continues to travel, it will squeeze the first pressure plate 501 to rotate it to a horizontal state. At this time, the pressure rod 503 on the bottom side of the first pressure plate 501 moves toward the bottom side, and drives the load-bearing slide bar 506 to slide to one side through the first pulley 505 at the end and the inclined groove 507 opened in the middle of the load-bearing slide bar 506, until the positioning block 508 at the end of the load-bearing slide bar 506 engages with the groove 510. At this time, the position of the load-bearing slide bar 506 is fixed and no longer reset, and the end of the load-bearing slide bar 506 is separated from the resistance block 502, that is, the load-bearing plate 301 is now completely supported by the weighing sensor 308 on the bottom side, and then the truck continues to travel until the truck is separated from the protruding part of the bottom plate 1. At this time, the weight of the truck is completely supported by the load-bearing plate 301, so that the weight of the truck can be weighed, thereby improving the service life of the scale.

[0028] Specifically, Figure 1 , Figure 10 ,Figure 11 , Figure 12 , Figure 14 , Figure 15 , Figure 16 As shown, the release structure 6 includes a pulling plate 602, a pulling plate 602 is respectively provided on both sides of the bottom plate 1, the pulling plate 602 is slidably connected to the inner side of the bottom plate 1, and a receiving groove 603 is provided at the end of the pulling plate 602. The bottom plate 1 is slidably connected with a release block 604 through a card slot 510, and a fifth spring 607 is fixedly connected between the release block 604 and the bottom plate 1. The bottom end of the release block 604 is an arc structure, and the bottom end of the release block 604 contacts the pulling plate 602 through the receiving groove 603. A second pressing plate 601 is rotatably connected to both sides of the bottom plate 1, and a connecting rod 606 is rotatably connected to the bottom side of the second pressing plate 601. The bottom end of the connecting rod 606 is rotatably connected to the side of the pulling plate 602, and a fourth spring 605 is fixedly connected between the end of the pulling plate 602 and the bottom plate 1. When the scale completes the measurement, the truck will drive away from the load-bearing plate 301. At this time, the second pressure plate 601 located at the end of the bottom plate 1 will be pressed down, and the rotation of the second pressure plate 601 will push the pulling plate 602 to slide to one side through the connecting rod 606. When the pulling plate 602 slides, the arc end of the release block 604 will disengage from the receiving groove 603 on the pulling plate 602. At this time, the release block 604 is lifted, and then the positioning block 508 engaged in the groove 510 is pushed out. At this time, under the traction of the return spring 511, the load-bearing slide bar 506 returns to its position, and its end slides back to the bottom side of the resistance block 502 to facilitate the next measurement.

[0029] Specifically, Figure 1 , Figure 5 , Figure 12 , Figure 16 As shown, the mobile structure 7 includes a handle 702, one end of the bottom plate 1 is fixedly connected with the handle 702, the other end of the bottom plate 1 is rotatably connected with a rocker 701, both sides of the rocker 701 are respectively provided with thread structures in opposite directions, both sides of the rocker 701 are respectively threadedly connected with a pushing block 706, the pushing block 706 is slidably connected to the inner side of the bottom plate 1, a mounting block 703 is vertically provided on the side of the pushing block 706, the top end of the mounting block 703 is an inclined structure, the inclined side of the mounting block 703 conflicts with the pushing block 706, a sixth spring 704 is fixedly connected between the mounting block 703 and the bottom plate 1, and the bottom end of the mounting block 703 is rotatably connected with a second pulley 705; There are two mounting blocks 703 provided on the bottom side of the bottom plate 1. A second pulley 705 is rotatably mounted at the bottom end of the mounting block 703. When the user rotates the rocker 701 located on the side, the two pushing blocks 706 on the rocker 701 will push the mounting block 703 to slide downward through the inclined surface structure at the top end of the mounting block 703 until one end of the bottom plate 1 is lifted by the second pulley 705. At this time, the user can lift the entire bottom plate 1 through the handle 702 provided at the other end of the bottom plate 1 and move the weighbridge by means of the second pulley 705, which is convenient for changing the deployment position of the weighbridge.

[0030] When the present invention is in use, first, a bearing plate 301 for bearing a truck is provided on the top side of the bottom plate 1. When the truck travels onto the surface of the bearing plate 301 through the inclined slope blocks 2 on both sides, the weighing sensors 308 on the bottom side of the bearing plate 301 can obtain the weighing data of the truck. When replacing or repairing the weighing sensors 308, it is necessary to appropriately lift the bearing plate 301. At this time, the user can rotate the driving screw 304 inside the lifting bracket 307 on the bottom side of the bearing plate 301, so that the threaded blocks 306 on both sides of the driving screw 304 move towards the middle along the lifting bracket 307. The threaded blocks 306 drive the lifting rods 305 on the side to rotate, and finally the bearing plate 301 is lifted through the lifting rotating shaft 302 at the end of the lifting rod 305. At this time, the user can take out the weighing sensor 308 between the bearing plate 301 and the bottom plate 1. During this process, in order to ensure that the bearing plate 301 will not shift in position after the repair is completed, for the two lifting rotating shafts 302 at both ends of the bearing plate 301, one is rotatably connected to the bearing plate 301, and the other lifting rotating shaft 302 is slidably connected to the bearing plate 301 through the offset groove 303, so as to ensure that the user can lift any end of the bearing plate 301 without causing deformation of the bearing plate 301. At the same time, the lifting bracket 307 is slidably connected to the bottom plate 1 through the guide rod 309, so that the bearing plate 301 will not shift in position after resetting, ensuring the normal operation of the weighbridge. For a pitless weighbridge, the weighbridge is directly installed on the ground surface, which makes the truck need to rely on the inclined slope blocks 2 to reach the surface of the bearing plate 301 for weighing. In order to reduce the height of the bearing plate 301, a pair of telescopic blocks 404 are respectively provided at both ends of the lifting bracket 307. When rotating the control rod 401 at the end of the lifting bracket 307, the positioning groove 403 on the control rod 401 disengages from the end of the inclined surface slider 406, so that the inclined surface slider 406 slides inward and pushes out the two telescopic blocks 404 on both sides through the inclined surface structures on both sides. At this time, the telescopic blocks 404 are in contact with the bottom plate 1, and the lifting bracket 307 can be supported, ensuring the support for the lifting of the height of the bearing plate 301. When the control rod 401 is reset and the telescopic blocks 404 retract, the lifting bracket 307 can slide towards the bottom side of the bottom plate 1 without interfering with the weighing of the weighbridge. In order to facilitate the driving of the driving screw 304, a ratchet block 803 is provided inside the control rod 401. When the user slides the inner sliding rod 801 on the side of the control rod 401, the end of the inner sliding rod 801 will push the ratchet block 803 towards the driving shaft 402 through the seventh spring 805 at the end. At this time, when rotating the control rod 401, the driving shaft 402 can be driven through the meshing effect between the ratchet block 803 and the ratchet groove 802 on the driving shaft 402. Due to the structural characteristics of the ratchet block 803 and the ratchet groove 802, the user can drive the driving screw 304 to rotate by repeatedly rotating the control rod 401 within a certain range, and relatively labor-savingly realize the lifting of the bearing plate 301.On the other hand, the ratchet grooves 802 on the two driving shafts 402 arranged at the two ends of the same lifting bracket 307 are arranged in opposite directions, so that the two control rods 401 located on both sides of the same lifting bracket 307 can control the two rotation directions of the same driving screw 304, thereby controlling the lifting and lowering of the lifting plate, and when the control rod 401 rotates, the two telescopic blocks 404 on the same side will extend out and support the lifting bracket 307. In order to ensure that both ends of the lifting bracket 307 have a stable supporting effect, before rotating the driving screw 304, the user needs to rotate the control rods 401 on both sides 180°. At the same time, in order to fix the position of the control rod 401, a fixing groove 806 is provided on the side of the inner sliding rod 801. When the inner slide bar 801 is forced to slide toward the driving shaft 402, the arc-shaped portion of the fixing groove 806 will be connected with the arc groove 808 on the side of the control rod 401. At this time, the positioning column 807 can slide in the arc groove 808 and the fixing groove 806. When the positioning column 807 slides into the fixing groove 806, the inner slide bar 801 is released to make the positioning column 807 engage with the inner slide bar 801, thereby fixing the position of the control rod 401, and the ratchet block 803 will be in a disengaged state from the ratchet groove 802, ensuring that when the operator rotates the control rod 401 on one side, the control rod 401 on the other side can maintain the rotation position, which is convenient for operation. A convex portion is respectively provided on both sides of the bottom plate 1 and is horizontally aligned with the surface of the carrying plate 301. When the truck is turned When the truck travels on the inclined slope block 2 without contacting the load-bearing plate 301, the abutment block 502 on the bottom side of the load-bearing plate 301 will conflict with the load-bearing slide bar 506, so that the load-bearing plate 301 is supported by the load-bearing slide bar 506 at this time. As the truck travels to the surface of the load-bearing plate 301, the weight of the truck is still supported by the load-bearing slide bar 506, and the load-bearing plate 301 will not rise or fall due to the rigid support of the load-bearing slide bar 506, that is, when the load-bearing plate 301 is directly supported by the load cell 308, the deformation and offset that may be caused by the drop of the force-bearing end of the load-bearing plate 301 is avoided. Then the truck continues to travel, and the front wheels of the truck move to the protruding part of the bottom plate 1. At this time, the weight of the truck is all supported by the bottom plate 1, and the truck continues to travel. The first pressure plate 501 will be squeezed to rotate to a horizontal state. At this time, the pressure rod 503 on the bottom side of the first pressure plate 501 moves toward the bottom side, and drives the load-bearing slide bar 506 to slide to one side through the first pulley 505 at the end and the inclined groove 507 opened in the middle of the load-bearing slide bar 506, until the positioning block 508 at the end of the load-bearing slide bar 506 is engaged with the groove 510. At this time, the position of the load-bearing slide bar 506 is fixed and no longer reset, and the end of the load-bearing slide bar 506 is separated from the resistance block 502, that is, at this time, the load-bearing plate 301 is completely supported by the weighing sensor 308 on the bottom side, and then the truck continues to travel until the truck is separated from the protruding part of the bottom plate 1. At this time, the weight of the truck is completely supported by the load-bearing plate 301, so that the weight of the truck can be weighed.To extend the service life of the weighbridge, when the weighbridge completes the measurement, the truck will drive away from the load-bearing plate 301. At this time, the second pressure plate 601 at the end of the bottom plate 1 will be pressed down, and the rotation of the second pressure plate 601 will push the pulling plate 602 to slide to one side through the connecting rod 606. When the pulling plate 602 slides, the arc end of the release block 604 will be separated from the receiving groove 603 on the pulling plate 602. At this time, the release block 604 is lifted, and then the positioning block 508 engaged in the groove 510 is pushed out. At this time, under the traction of the return spring 511, the load-bearing slide bar 506 returns to its position, and its end slides back to the resistance block 502, to facilitate the next measurement, two mounting blocks 703 are provided on the bottom side of the bottom plate 1, and a second pulley 705 is rotated at the bottom end of the mounting block 703. When the user rotates the rocker 701 located on the side, the two pushing blocks 706 on the rocker 701 will push the mounting block 703 to slide to the bottom side through the inclined structure at the top of the mounting block 703 until one end of the bottom plate 1 is lifted up through the second pulley 705. At this time, the user can lift the bottom plate 1 as a whole through the handle 702 set at the other end of the bottom plate 1 and move the floor scale through the second pulley 705, which is convenient for changing the deployment position of the floor scale.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A foundation-free weighbridge, characterized in that, It includes a bottom plate (1), inclined slope blocks (2) are respectively arranged at both ends of the bottom plate (1), a bearing structure (3) is arranged on the bottom plate (1), a control structure (4) is connected between the bearing structure (3) and the bottom plate (1), a driving structure (8) is arranged inside the control structure (4), support structures (5) are respectively arranged on both sides of the bottom plate (1), a release structure (6) is connected to the support structure (5), and a moving structure (7) is connected to the bottom side of the bottom plate (1); The bearing structure (3) includes a bearing plate (301). A bearing plate (301) is arranged on the top side of the bottom plate (1). An offset groove (303) is formed on the bottom side of the bearing plate (301). Two lifting rotating shafts (302) are arranged on the bottom side of the bearing plate (301). One of the lifting rotating shafts (302) is slidably connected to the bearing plate (301) through the offset groove (303), and the other lifting rotating shaft (302) is rotatably connected to the bearing plate (301). A lifting rod (305) is rotatably connected to both sides of the lifting rotating shaft (302). A threaded block (306) is rotatably connected to the end of the lifting rod (305). A lifting bracket (307) is arranged between the bottom plate (1) and the bearing plate (301). The side surface of the threaded block (306) is slidably connected to the lifting bracket (307). A driving screw rod (304) is rotatably connected to the middle of the lifting bracket (307). The threaded block (306) is threadedly connected to the driving screw rod (304).

2. The pitless weighbridge according to claim 1, characterized in that: The thread directions on both sides of the driving screw rod (304) are set in reverse. A plurality of guide rods (309) are vertically and fixedly connected to the bottom plate (1). The lifting bracket (307) is slidably connected to the guide rods (309). A plurality of weighing sensors (308) are installed between the bottom plate (1) and the bearing plate (301).

3. The pitless weighbridge according to claim 2, characterized in that: The control structure (4) includes a driving shaft (402). A driving shaft (402) is respectively fixedly connected to both ends of the driving screw rod (304). A control rod (401) is rotatably connected to the driving shaft (402). An inclined surface slider (406) is slidably connected to the end of the lifting bracket (307). One end of the inclined surface slider (406) is in a hemispherical structure, and the other end of the inclined surface slider (406) is in a triangular structure. A positioning groove (403) is formed on the side surface of the control rod (401). The spherical end of the inclined surface slider (406) abuts against the control rod (401) through the positioning groove (403). A telescopic block (404) is respectively arranged on both sides of the inclined surface slider (406) on the lifting bracket (307). The two telescopic blocks (404) are slidably connected to the lifting bracket (307), and a first spring (405) is fixedly connected between the two telescopic blocks (404). The telescopic block (404) is slidably connected to the inclined surface slider (406) through the inclined surface arranged on the same side of the inclined surface slider (406).

4. The pitless weighbridge according to claim 3, wherein: The driving structure (8) comprises a ratchet block (803), the inner side of the control rod (401) is slidably connected to the ratchet block (803), the side of the driving shaft (402) is provided with a plurality of ratchet grooves (802), the end of the ratchet block (803) is fixedly connected to a traction slide bar (804), the end of the traction slide bar (804) is slidably connected to an inner slide bar (801), a seventh spring (805) is fixedly connected between the inner slide bar (801) and the ratchet block (803), and the inner slide bar (801) is slidably connected to the inner side of the control rod (401).

5. The pitless weighbridge according to claim 4, characterized in that: Two positioning columns (807) are fixedly connected to the two ends of the lifting bracket (307), and the two positioning columns (807) located on the same side are respectively arranged on both sides of the driving shaft (402). An arc groove (808) is provided on the side of the control rod (401) close to the lifting bracket (307), and the radius of the arc groove (808) is equal to the distance between the positioning column (807) and the driving shaft (402). A fixing groove (806) is provided on the side of the inner sliding rod (801), and the fixing groove (806) is in a "T"-shaped structure. The inner sliding rod (801) is engaged with the positioning column (807) through the fixing groove (806).

6. The foundation pit-free weighbridge according to claim 1, wherein: The support structure (5) comprises a bearing slide bar (506), and each of the two sides of the base plate (1) is slidably connected to a bearing slide bar (506), and one end of the bearing slide bar (506) is slidably connected to a positioning block (508), and the end of the positioning block (508) is in an inclined structure, and a third spring (509) is fixedly connected between the positioning block (508) and the bearing slide bar (506), and a card slot (510) is provided on the inner side of the base plate (1), and a resistance block (502) is fixedly connected to the bottom side of the bearing plate (301), and the resistance block (502) is in resistance to the end of the bearing slide bar (506) arranged on the same side, and a return spring (511) is connected between the bearing slide bar (506) and the base plate (1).

7. The pitless weighbridge according to claim 6, wherein: A first pressure plate (501) is rotatably connected to each of the two sides of the bottom plate (1); a pressure rod (503) is slidably connected to the bottom side of the first pressure plate (501); the pressure rod (503) is vertically arranged; a second spring (504) is fixedly connected between the pressure rod (503) and the bottom plate (1); a first pulley (505) is rotatably connected to the bottom end of the pressure rod (503); an inclined groove (507) is provided in the middle of the bearing slide rod (506); and a side surface of the first pulley (505) contacts the bearing slide rod (506) through the inclined groove (507).

8. The pitless weighbridge according to claim 6, wherein: The release structure (6) includes a pulling plate (602). A pulling plate (602) is provided on each side of the bottom plate (1). The pulling plate (602) is slidably connected to the inner side of the bottom plate (1). A receiving groove (603) is formed at the end of the pulling plate (602). The bottom plate (1) is slidably connected with a release block (604) through a clamping groove (510). A fifth spring (607) is fixedly connected between the release block (604) and the bottom plate (1). The bottom end of the release block (604) is of an arc surface structure. The bottom end of the release block (604) abuts against the pulling plate (602) through the receiving groove (603).

9. The pitless weighbridge according to claim 8, wherein: A second pressing plate (601) is rotatably connected to each side of the bottom plate (1). A connecting rod (606) is rotatably connected to the bottom side of the second pressing plate (601). The bottom end of the connecting rod (606) is rotatably connected to the side surface of the pulling plate (602). A fourth spring (605) is fixedly connected between the end of the pulling plate (602) and the bottom plate (1).

10. The pitless weighbridge according to claim 1, characterized in that: The moving structure (7) includes a handle (702). A handle (702) is fixedly connected to one end of the bottom plate (1). A rocker (701) is rotatably connected to the other end of the bottom plate (1). Threaded structures with opposite directions are provided on both sides of the rocker (701). A pushing block (706) is threadedly connected to each side of the rocker (701). The pushing block (706) is slidably connected to the inner side of the bottom plate (1). A mounting block (703) is vertically provided on the side surface of the pushing block (706). The top end of the mounting block (703) is of an inclined surface structure. The inclined surface side of the mounting block (703) abuts against the pushing block (706). A sixth spring (704) is fixedly connected between the mounting block (703) and the bottom plate (1). A second pulley (705) is rotatably connected to the bottom end of the mounting block (703).

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