Balance beam damping system with pressure monitoring function, chassis and vehicle

Abstract

The invention discloses a balance beam damping system with a pressure monitoring function, a chassis and a vehicle. The balance beam damping system comprises a balance beam, a rubber damping device, a pressure monitoring device and a second fastening part. The rubber damping device is arranged below the end part of one side of the balance beam; the pressure monitoring device is arranged between the rubber damping device and the balance beam, and the pressure monitoring device and the rubber damping device are detachably fixed together through a first fastening part; the second fastening part is used for fixing the balance beam, the pressure monitoring device and the rubber damping device together in a detachable mode. The problems that a rubber damping built-in monitoring device is low in measuring range and has no maintainability are solved, the stress of the monitoring device is optimized, and the disassembly and assembly convenience of a damping system is improved.

Description

Technical Field

[0001] The invention relates to a balance beam shock absorbing system with a pressure monitoring function, belongs to the mechanical field, and can be used for a mining dump truck, in particular an articulated dump truck. Background Art

[0002] The balance beam shock absorption system is a common shock absorption system, which is widely used in mining dump trucks, especially articulated dump trucks. The mainstream configuration is the balance beam plus rubber shock absorption, which has the advantages of high reliability and maintenance-free. On equipment with a balance beam shock absorption system as a shock absorption device, the pressure monitoring device of the weighing system is mostly arranged in the system, so the pressure change is large and uniform during loading, and the pressure change value can be converted into material weight through an algorithm to realize the weighing function.

[0003] As a high-end configuration, the weighing function is not equipped with a pressure monitoring function in some balance beam shock absorption systems. In the current systems equipped with pressure monitoring functions, the spoke-type pressure monitoring device has stable performance and is arranged at the rubber shock absorber. The current mature solution is to integrate the pressure monitoring device with the rubber shock absorber. This solution has the following disadvantages: Due to the internal space limitations of the shock absorber, only small-tonnage pressure monitoring devices can be arranged, with limited range and low precision; and the monitoring device needs to be vulcanized into one with the shock absorber, which is a cumbersome process. If the monitoring device fails, the entire shock absorber can only be replaced as a whole, and it cannot be repaired, and the cost is high. The monitoring device is arranged between the shock absorber and the balance beam, which solves the problem of small space and low precision, and the monitoring device can be replaced separately. However, if this arrangement is adopted, there are high requirements for the installation method. Analysis shows that the monitoring device cannot be directly connected to the upper and lower balance beams and rubber shock absorbers in a rigid manner, so that the upper and lower surfaces of the monitoring device cannot be deformed and the stress changes cannot be output. The conventional solution is to connect the upper and lower surfaces of the monitoring device to the balance beam and the rubber shock absorber respectively, so that the monitoring device directly transmits the pressure and tension from the balance beam, which requires a high strength of the device and has certain risks. In addition, the current mature rubber shock absorbers have a protruding positioning shaft on the upper part for installation and positioning to extend into the upper balance beam, which is extremely inconvenient for the replacement of shock absorbers. The balance beam needs to be removed to maintain the shock absorber, which is a cumbersome process and difficult to operate. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a balance beam shock absorption system with a pressure monitoring function. The force on the pressure monitoring device is optimized, and the convenience of disassembly and assembly of the shock absorption system is improved, thereby solving the problem of low range and poor maintainability of the built-in monitoring device of the rubber shock absorption in the prior art.

[0005] To achieve the above object, the present invention is implemented according to the following technical solutions:

[0006] In a first aspect, the present invention provides a balance beam shock absorption system with a pressure monitoring function, comprising:

[0007] Balance beam;

[0008] A rubber shock absorbing device is arranged below one end of the balance beam;

[0009] A pressure monitoring device is arranged between the rubber shock absorbing device and the balance beam, and the pressure monitoring device and the rubber shock absorbing device are fixed together in a detachable manner by a first fastening component;

[0010] The second fastening component is used to fix the balance beam, the pressure monitoring device and the rubber shock absorbing device together in a detachable manner.

[0011] In some embodiments, a universal rotating device is provided between the mounting planes facing the pressure monitoring device and the balance beam, so as to allow the pressure monitoring device to rotate slightly according to the load direction when the pressure monitoring device is unevenly loaded.

[0012] In some embodiments, a spherical protrusion is provided on the mounting surface of the balance beam, and a spherical groove is provided on the mounting surface of the pressure monitoring device. The size of the spherical protrusion is slightly larger than the size of the spherical groove. The universal rotating device is formed by the cooperation of the spherical protrusion and the spherical groove.

[0013] In some embodiments, an annular sealing gasket is provided between the mounting planes facing the pressure monitoring device and the balance beam, and wraps the universal rotating device in its inner hole.

[0014] In some embodiments, the balance beam comprises:

[0015] The main body of the balance beam is a box-shaped structure formed by welding a top plate, a bottom plate, a pair of side plates facing each other and a pair of vertical plates facing each other; wherein a coaxially arranged mounting hole is respectively provided in the central area of ​​the two side plates;

[0016] A mounting seat of a cylindrical structure, which is inserted into the mounting holes of the two side plates and welded thereto, and is used to mount the balance beam on the vehicle body;

[0017] At least one lining plate is arranged on the bottom plate of the balance beam directly above the pressure monitoring device. The top surface of the lining plate is a plane for being welded to the lower surface of the bottom plate after being bonded thereto. The central area of ​​the bottom surface of the lining plate is a spherical protrusion of an annular structure.

[0018] In some embodiments, the balance beam body further comprises:

[0019] The support seat of the cylindrical structure is arranged at the end of the balance beam body. The bottom annular surface of the support seat is coaxial with the through hole opened on the bottom plate and is welded to the upper surface of the bottom plate. The top of the support seat is inserted into the through hole opened on the top plate, and the top annular surface of the support seat is flush with the upper surface of the top plate.

[0020] In some embodiments, a bushing is inserted into the support seat, the through hole of the base plate, the central through hole of the lining plate, and the central hole of the pressure monitoring device; the second fastening component is a central fixing bolt, which is inserted into the bushing and tightened into the central threaded hole of the rubber shock absorber.

[0021] In some embodiments, the side panel is shaped like an inverted triangle structure or an equilateral triangle structure, and the type of vehicle is matched by selecting side panels of different shapes; when the side panel is an equilateral triangle structure, the top panel is a long flat plate structure, and the bottom panel is composed of a V-shaped plate structure in the middle and short flat plate structures on both sides; when the side panel is an inverted triangle structure, the top panel is composed of a V-shaped plate structure in the middle and short flat plate structures on both sides, and the bottom panel is a long flat plate structure.

[0022] In some embodiments, the pressure monitoring device consists of a pressure monitoring device body, a sealing plate and a pressure monitoring component; the pressure monitoring device body is a symmetrical structure, an annular protrusion is provided at the center of the top surface of the pressure monitoring device body, and the central area of ​​the annular protrusion is set as a spherical groove; the pressure monitoring device body is provided with a cylindrical hole extending vertically upward from the center of the bottom surface and coaxially arranged with the center hole of the annular protrusion, the cylindrical hole and the center hole of the annular protrusion constitute a central stepped hole of the pressure monitoring device body, and the sealing plate is buckled at the bottom of the central stepped hole in a tight fit; the pressure monitoring component is fixed in the central stepped hole.

[0023] In some embodiments, a cylindrical ring body coaxially arranged therewith extends vertically downward along the periphery of the center hole of the annular protrusion, a predetermined axial gap is left between the bottom surface of the cylindrical ring body and the sealing plate, and a predetermined radial gap is left between the outer circumferential surface of the cylindrical ring body and the inner circumferential surface of the cylindrical hole; in the predetermined radial gap, a plurality of elastomers are fixed uniformly and alternately along the entire circumference, strain gauges are arranged on the elastomers, and a plurality of the strain gauges constitute the pressure monitoring component; at least one through hole connected to the cylindrical hole and used for the wire harness of the strain gauge to pass through is provided on the side elevation of the main body of the pressure monitoring device; when the annular protrusion is subjected to pressure, the downward deformation drives the cylindrical ring body and the elastomer to move downward, the elastomer produces elastic deformation, and the strain gauge detects the deformation signal and outputs the signal.

[0024] In some embodiments, the rubber shock absorbing device comprises:

[0025] The rubber body is a cylindrical ring, and multiple annular lining plates vulcanized into one body are evenly arranged inside the rubber body;

[0026] A top plate, arranged on the axial top surface of the rubber body, and the two are vulcanized into one, and the top plate is provided with a central threaded hole used in conjunction with the second fastening component;

[0027] A bottom plate is arranged on the axial bottom surface of the rubber body, and the two are vulcanized into one, and a central through hole is provided on the bottom plate;

[0028] A bottom sealing plate is arranged at the central through hole of the bottom plate, and the bottom sealing plate and the bottom plate are limited by a stopper structure and fixed by welding;

[0029] The pull ring structure is used to limit the maximum height of the rubber shock absorber after being pulled, and includes an upper connecting ring and a lower connecting ring; the upper connecting ring is a U-shaped structure as a whole, and its two top free ends are fixed on the central area of ​​the top plate; the lower connecting ring is an N-shaped structure as a whole, and its two bottom free ends are fixed on the central area of ​​the bottom sealing plate, and the lower connecting ring is buckled with the upper connecting ring through a vertically crossed ring.

[0030] In some embodiments, the outer peripheries of the top plate and the bottom plate both protrude rubber bodies, and a plurality of mounting through holes are respectively provided at the portions of the top plate and the bottom plate protruding from the rubber bodies; the first fastening component is a bolt, and the pressure monitoring device is provided with a plurality of threaded holes corresponding one-to-one to the plurality of mounting through holes on the top plate, and the bolts are passed through the mounting through holes and tightened in the threaded holes to fix the pressure monitoring device and the rubber shock absorbing device together; the axle is provided with threaded holes corresponding one-to-one to the plurality of mounting through holes on the bottom plate, and the bolts are passed through the mounting through holes and tightened in the threaded holes to fix the rubber shock absorbing device and the axle together.

[0031] In a second aspect, the present invention provides a chassis, comprising:

[0032] Front axle and rear axle for assembling wheels;

[0033] A vehicle body is arranged above the front axle and the rear axle, and the exterior surfaces of both sides of the vehicle body are each provided with a symmetrically arranged extension shaft in the middle area between the front and rear axles;

[0034] A balance beam damping system with a pressure monitoring function as described above is arranged on each side of the vehicle body for assembling the vehicle body with the front axle and the rear axle.

[0035] In some embodiments, the extending shaft on the vehicle body is inserted into a mounting seat with a cylindrical structure on the corresponding balance beam, and a bearing is installed in a tight fit between the facing circumferential surfaces of the mounting seat and the extending shaft, so that the balance beam can rotate around the extending shaft; the extending shaft is a stepped shaft, and a plurality of threaded holes are provided on the axial surface of the extending shaft, and a pad is tightly attached to the axial surface of the mounting seat, and the pad is fixed to the extending shaft by a plurality of bolts, and the balance beam is axially limited by the combined action of the step and the pad.

[0036] In some embodiments, the balance beam is a symmetrical structure, and there are two rubber shock absorbers, one of which is arranged between the front axle and one end of the balance beam, and the other is arranged between the rear axle and the other end of the balance beam; one pressure monitoring device is arranged between the two side ends of the balance beam and the corresponding rubber shock absorber, and the monitored pressure signals are output from both ends.

[0037] In some embodiments, the balance beam is a symmetrical structure, and there are two rubber shock absorbers, one of which is arranged between the front axle and one end of the balance beam, and the other is arranged between the rear axle and the other end of the balance beam; a pressure monitoring device is arranged between one end of the balance beam and the corresponding rubber shock absorber, and a pad with the same outer contour as the pressure monitoring device is arranged between the other end of the balance beam and the corresponding rubber shock absorber, and the monitored pressure signal is output from one end of the pressure monitoring device.

[0038] In a third aspect, the present invention provides a vehicle, including the above-mentioned balance beam shock absorption system with pressure monitoring function; or, including the above-mentioned chassis.

[0039] Based on the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0040] The present invention solves the problem that the built-in monitoring device of rubber shock absorption has a low measuring range and is not maintainable, optimizes the force of the monitoring device, and improves the convenience of disassembly and assembly of the shock absorption system.

[0041] First, the pressure monitoring device is arranged between the balance beam and the rubber shock absorber, is not limited by the internal space of the rubber shock absorber and can be maintained separately;

[0042] Second, compared with the solution in which the upper and lower sides of the pressure monitoring device are fixed separately, the solution adopted by the present invention is that the bottom surface of the pressure monitoring device is fixed to the rubber shock absorbing device, the spherical groove on the top surface cooperates with the spherical protrusion on the lower part of the balance beam, and the central fixing bolt penetrates from the top surface of the balance beam into the center of the pressure monitoring device and is screwed into the central threaded hole of the top plate of the rubber shock absorbing device to complete the fixation. This has the following advantages: the pressure monitoring devices that are fixed separately in the existing solution will directly transmit the pressure and tension from the balance beam, and the pressure monitoring device under alternating loads is easy to be damaged, while the pressure monitoring device in the solution of the present invention only bears pressure, and the force condition is optimized; the pressure monitoring device and the balance beam adopt spherical protrusions and spherical grooves to cooperate, and when the pressure monitoring device is unevenly loaded, the pressure monitoring device is allowed to rotate slightly according to the load direction, thereby reducing the deformation error of the elastic body and improving the accuracy;

[0043] Third, compared with the traditional rubber shock-absorbing extended positioning shaft end solution, the rubber shock-absorbing device designed in the present invention is positioned by a bushing and a center fixing bolt. There is no need to remove the balance beam during disassembly and assembly. The rubber shock-absorbing device and the pressure monitoring device can be disassembled and assembled by simply lifting the two ends of the balance beam, which greatly improves convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0045] In the attached picture:

[0046] Figure 1 It is a connection schematic diagram of the balance beam shock absorption system of the present invention;

[0047] Figure 2 It is an exploded view of the balance beam shock absorbing system of the present invention;

[0048] Figure 3 An exploded view of a balance beam of the balance beam shock absorbing system of the present invention;

[0049] Figure 4 A sectional view of one side end of a balance beam of the balance beam shock absorbing system of the present invention;

[0050] Figure 5 It is a schematic diagram of a lining plate of the balance beam shock absorbing system of the present invention;

[0051] Figure 6 It is a schematic diagram of a pressure monitoring device of a balance beam shock absorbing system according to the present invention;

[0052] Figure 7 It is an exploded view of the pressure monitoring device of the balance beam shock absorption system of the present invention;

[0053] Figure 8 A cross-sectional view of a rubber damping device of a balance beam damping system according to the present invention;

[0054] Fig. 9 An exploded view of the rubber shock absorbing device of the balance beam shock absorbing system of the present invention;

[0055] Fig.10 is a cross-sectional view of the balance beam shock absorbing system of the present invention;

[0056] Fig.11 An exploded view of the connection between the balance beam shock absorbing system of the present invention and the vehicle body and the axle;

[0057] Fig.12 It is a schematic diagram of the connection between the balance beam shock absorbing system of the present invention and the vehicle body and the axle;

[0058] Fig.13 This is another structural schematic diagram of the connection between the balance beam shock absorbing system of the present invention and the vehicle body and the axle.

[0059] Explanation of the reference numerals: 1. Balance beam; 1-1. Top plate; 1-2. Side plate; 1-3. Bottom plate; 1-4. Mounting seat; 1-5. Lining plate; 1-6. Support seat; 1-7. Oblique rib plate; 1-8. Angle rib; 1-9. Vertical plate; 2. Pressure monitoring device; 2-1. Pressure monitoring device body; 2-2. Closing plate; 3. Rubber shock-absorbing device; 3-1. Top plate; 3-2. Bottom plate; 3-3. Rubber body ; 3-4, annular lining; 3-5, bottom sealing plate; 3-6, lower connecting ring; 3-7, upper connecting ring; 4, bushing; 5, annular sealing gasket; 6, center fixing bolt; 7, gasket; 8, pad; 9, bolt; 101, balance beam shock absorption system; 102, bolt; 104, rear axle; 105, front axle; 106, vehicle body; 107, bearing; 108, pad; 109, bolt.

[0060] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0062] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] like Figure 1 , Figure 2 As shown, a balance beam shock absorption system with a pressure monitoring function comprises a balance beam 1, a rubber shock absorbing device 3, a pressure monitoring device 2 and a second fastening component; the rubber shock absorbing device 3 is arranged below one end of the balance beam 1; the pressure monitoring device 2 is arranged between the rubber shock absorbing device 3 and the balance beam 1, and the pressure monitoring device 2 and the rubber shock absorbing device 3 are fixed together in a detachable manner through a first fastening component; the second fastening component is used to fix the balance beam 1, the pressure monitoring device 2 and the rubber shock absorbing device 3 together in a detachable manner.

[0065] As can be seen from the above, the pressure monitoring device 2 is arranged between the balance beam 1 and the rubber shock absorbing device 3 in the present invention, so that it is not limited by the internal space of the rubber shock absorbing device and can be maintained separately.

[0066] In a further solution, a universal rotating device is provided between the mounting planes facing the pressure monitoring device 2 and the balance beam 1, so as to allow the pressure monitoring device 2 to slightly rotate according to the load direction when the pressure monitoring device 2 is unevenly loaded.

[0067] Preferred solution: a spherical protrusion is provided on the mounting surface of the balance beam 1, a spherical groove is provided on the mounting surface of the pressure monitoring device 2, and the size of the spherical protrusion is slightly larger than the size of the spherical groove, and a universal rotating device is formed by the cooperation of the spherical protrusion and the spherical groove.

[0068] Further solutions, such as Figure 2As shown, an annular sealing gasket 5 is also provided between the mounting planes facing the pressure monitoring device 2 and the balance beam 1, wrapping the universal rotating device in its inner hole. Specifically, the annular sealing gasket 5 is arranged on the outside of the annular protrusion of the pressure monitoring device 2 to prevent mud and sand from seeping into the gap between the outside of the protrusion of the pressure monitoring device 2 and the balance beam 1.

[0069] The specific structure of the above-mentioned balance beam is further described below.

[0070] like Figure 3 , Figure 5 As shown, the balance beam includes a balance beam body, a mounting seat 1-4 of a cylindrical structure and at least one lining plate 1-5; the balance beam body is welded together by a top plate 1-1, a bottom plate 1-3, a pair of side plates 1-2 opposite to each other and a pair of vertical plates 1-9 opposite to each other to form a box-type structure; wherein, the central area of ​​each of the two side plates 1-2 is provided with a coaxially arranged mounting hole; the mounting seat 1-4 of the cylindrical structure is passed through the mounting holes of the two side plates 1-2 and welded together therewith, and the mounting seat 1-4 is used to install the balance beam 1 on the vehicle body; the lining plate 1-5 is arranged on the bottom plate 1-3 of the balance beam 1 directly above the pressure monitoring device 2, the top surface of the lining plate 1-5 is a plane, which is used to fit with the lower surface of the bottom plate 1-3 and then welded together, and the central area of ​​the bottom surface of the lining plate 1-5 is set as a spherical protrusion of an annular structure.

[0071] Further solutions, such as Figure 3 , Figure 4 As shown, the balance beam body also includes a support seat 1-6 of a cylindrical structure, which is arranged at the end of the balance beam body, and the bottom annular surface of the support seat 1-6 is coaxial with the through hole opened on the bottom plate 1-3 and is welded to the upper surface of the bottom plate 1-3, and the top of the support seat 1-6 is inserted into the through hole opened on the top plate 1-1, and the top annular surface of the support seat 1-6 is flush with the upper surface of the top plate 1-1.

[0072] Further solutions, such as Figure 2 , Fig.10 As shown, a bushing 4 is inserted into the support seat 1-6, the through hole of the base plate 1-3, the central through hole of the lining plate 1-5 and the central hole of the pressure monitoring device 2; the second fastening component is a central fixing bolt 6 and a gasket 7, which are inserted into the gasket 7 and the bushing 4 and then tightened into the central threaded hole of the rubber shock absorber 3.

[0073] The preferred solution is Figure 1 , Figure 2 , Figure 3 As shown, an oblique rib plate 1-7 and an angle rib 1-8 are arranged on both sides of the connection between the vertical plate 1-9 and the side plate 1-2, and the bottom surface of the oblique rib plate 1-7 is flush with the side surface of the angle rib 1-8.

[0074] Further solutions, such as leg 12, Fig.13 As shown, the side panel 1-2 is in the shape of an inverted triangle structure or an equilateral triangle structure, and the type of vehicle can be matched by selecting side panels 1-2 of different shapes; when the side panel 1-2 is in the equilateral triangle structure, the top panel 1-1 is a long flat plate structure, and the bottom panel 1-3 is composed of a V-shaped plate structure in the middle and short flat plate structures on both sides; when the side panel 1-2 is in the inverted triangle structure, the top panel 1-1 is composed of a V-shaped plate structure in the middle and short flat plate structures on both sides, and the bottom panel 1-3 is a long flat plate structure.

[0075] As can be seen from the above, the rubber shock absorbing device designed in the present invention is positioned by the bushing and the central fixing bolt. There is no need to remove the balance beam during disassembly and assembly. The rubber shock absorbing device and the pressure monitoring device can be disassembled and assembled by simply lifting the two ends of the balance beam, which greatly improves convenience.

[0076] The specific structure of the above-mentioned pressure monitoring device is further described below.

[0077] like Figure 6 , Figure 7 As shown, the pressure monitoring device 2 consists of a pressure monitoring device body 2-1, a sealing plate 2-2 and a pressure monitoring component; the pressure monitoring device body 2-1 is a symmetrical structure, and an annular protrusion is provided at the center of the top surface of the pressure monitoring device body 2-1, and the central area of ​​the annular protrusion is set as a spherical groove; the pressure monitoring device body 2-1 is provided with a cylindrical hole extending vertically upward from the center of the bottom surface and coaxially arranged with the center hole of the annular protrusion, and the cylindrical hole and the center hole of the annular protrusion constitute a central stepped hole of the pressure monitoring device body 2-1, and the sealing plate 2-2 is buckled at the bottom of the central stepped hole in a tight fit; the pressure monitoring component is fixed in the central stepped hole.

[0078] Further solutions, such as Figure 7 As shown, a cylindrical ring body coaxially arranged therewith extends vertically downward along the periphery of the center hole of the annular protrusion, a predetermined axial gap is left between the bottom surface of the cylindrical ring body and the sealing plate, and a predetermined radial gap is left between the outer circumferential surface of the cylindrical ring body and the inner circumferential surface of the cylindrical hole; in the predetermined radial gap, a plurality of elastomers are fixed uniformly and alternately along the entire circumference, strain gauges are arranged on the elastomers, and the plurality of strain gauges constitute a pressure monitoring component; at least one through hole connected to the cylindrical hole and used for the wire harness of the strain gauge to pass through is provided on the side elevation of the pressure monitoring device body 2-1; when the annular protrusion is subjected to pressure, the downward deformation drives the cylindrical ring body and the elastomer to move downward, the elastomer produces elastic deformation, and the strain gauge detects the deformation signal and outputs the signal.

[0079] As can be seen from the above, compared with the solution in which the upper and lower sides of the pressure monitoring device are fixed separately, the solution adopted by the present invention is that the bottom surface of the pressure monitoring device 2 is fixed to the rubber shock-absorbing device 3, the spherical groove on the top surface cooperates with the spherical protrusion on the lower part of the balance beam 1, and the central fixing bolt 6 penetrates from the top surface of the balance beam 1 into the center of the pressure monitoring device 2 and is screwed into the central threaded hole of the top plate of the rubber shock-absorbing device 3 to complete the fixation. This has the following advantages: the pressure monitoring devices that are fixed separately in the existing solution will directly transmit the pressure and tension from the balance beam, and the pressure monitoring device under alternating loads is easily damaged, while the pressure monitoring device 2 in the solution of the present invention only bears pressure, and the force condition is optimized; the pressure monitoring device 2 and the balance beam 1 adopt spherical protrusions and spherical grooves to cooperate, and when the pressure monitoring device 2 is unevenly loaded, the pressure monitoring device 2 is allowed to rotate slightly according to the load direction, thereby reducing the deformation error of the elastic body and improving the accuracy.

[0080] The specific structure of the rubber shock absorbing device is further described below.

[0081] like Figure 8 , Fig. 9 , Fig.10 As shown, the rubber shock absorbing device comprises a rubber body 3-3 in the form of a cylindrical ring, a top plate 3-1, a bottom plate 3-2, a bottom sealing plate 3-5 and a pull ring structure; a plurality of annular lining plates 3-4 vulcanized as one with the rubber body 3-3 are evenly arranged on the top and bottom inside the rubber body 3-3; the top plate 3-1 is arranged on the axial top surface of the rubber body 3-3, and the two are vulcanized as one, and the top plate 3-1 is provided with a central threaded hole used in conjunction with a central fixing bolt 6; the bottom plate 3-2 is arranged on the axial bottom surface of the rubber body 3-3, and the two are vulcanized as one, and the bottom plate 3-2 is provided with a central through hole; the bottom sealing plate 3-5 is arranged on the bottom plate 3- 2, and the bottom sealing plate 3-5 and the bottom plate 3-2 are limited by a stop structure, and the two are fixed by welding; the pull ring structure is used to limit the maximum height of the rubber shock absorber 3 after being pulled, and includes an upper connecting ring 3-7 and a lower connecting ring 3-6. The upper connecting ring 3-7 is a U-shaped structure as a whole, and its two free ends at the top are fixed on the central area of ​​the top plate 3-1; the lower connecting ring 3-6 is an N-shaped structure as a whole, and its two free ends at the bottom are fixed on the central area of ​​the bottom sealing plate 3-5, and the lower connecting ring 3-6 is vertically crossed with the upper connecting ring 3-7 and buckled together.

[0082] Further solutions, such as Figure 1 , Figure 2As shown, the outer peripheries of the top plate 3-1 and the bottom plate 3-2 both protrude the rubber body 3-3, and a plurality of mounting through holes are respectively provided at the portions of the top plate 3-1 and the bottom plate 3-2 protruding from the rubber body 3-3; the first fastening component is a bolt 9, and the pressure monitoring device 2 is provided with a plurality of threaded holes corresponding to the plurality of mounting through holes on the top plate 3-1 one to one, and the bolt 9 is passed through the mounting through holes and tightened in the threaded holes to fix the pressure monitoring device 2 and the rubber shock absorbing device 3 together; the axle is provided with threaded holes corresponding to the plurality of mounting through holes on the bottom plate one to one, and the bolt 102 is passed through the mounting through holes and tightened in the threaded holes to fix the rubber shock absorbing device 3 and the axle together.

[0083] It should be noted that the bottom surface of the pressure monitoring device 2 and the top plate of the rubber shock-absorbing device 3 are both square, and the outer edges are aligned after being fitted together. A threaded hole is designed at each of the four corners of the pressure monitoring device 2. The bolt 9 is inserted into the mounting holes aligned at the four corners of the top plate 3-1 of the rubber shock-absorbing device 3 and then screwed into the threaded hole to complete the connection between the pressure monitoring device 2 and the rubber shock-absorbing device 3.

[0084] In a preferred solution, the four bolts 9 are all flange head bolts and a spacer 8 is arranged between the top plate 3-1 and the bolt head. The spacer 8 can increase the thickness of the clamping layer of the bolt 9 and optimize the force of the bolt 9.

[0085] In summary, the present invention provides a balance beam shock absorption system with pressure monitoring function, which solves the problem that the built-in monitoring device of rubber shock absorption has low range and is not maintainable, optimizes the force of the monitoring device, and improves the convenience of disassembly and assembly of the shock absorption system.

[0086] First, the pressure monitoring device is arranged between the balance beam and the rubber shock absorber, is not limited by the internal space of the rubber shock absorber and can be maintained separately;

[0087] Second, compared with the solution in which the upper and lower sides of the pressure monitoring device are fixed separately, the solution adopted by the present invention is that the bottom surface of the pressure monitoring device is fixed to the rubber shock absorbing device, the spherical groove on the top surface cooperates with the spherical protrusion on the lower part of the balance beam, and the central fixing bolt penetrates from the top surface of the balance beam into the center of the pressure monitoring device and is screwed into the central threaded hole of the top plate of the rubber shock absorbing device to complete the fixation. This has the following advantages: the pressure monitoring devices that are fixed separately in the existing solution will directly transmit the pressure and tension from the balance beam, and the pressure monitoring device under alternating loads is easy to be damaged, while the pressure monitoring device in the solution of the present invention only bears pressure, and the force condition is optimized; the pressure monitoring device and the balance beam adopt spherical protrusions and spherical grooves to cooperate, and when the pressure monitoring device is unevenly loaded, the pressure monitoring device is allowed to rotate slightly according to the load direction, thereby reducing the deformation error of the elastic body and improving the accuracy;

[0088] Third, compared with the traditional rubber shock-absorbing extended positioning shaft end solution, the rubber shock-absorbing device designed in the present invention is positioned by a bushing and a center fixing bolt. There is no need to remove the balance beam during disassembly and assembly. The rubber shock-absorbing device and the pressure monitoring device can be disassembled and assembled by simply lifting the two ends of the balance beam, which greatly improves convenience.

[0089] like Fig.11 , Fig.12 , Fig.13 As shown, the present invention also provides a chassis, including a front axle 105, a rear axle 104, and a vehicle body 106; the front axle 105 and the rear axle 104 are used to assemble wheels; the vehicle body 106 is arranged above the front axle 105 and the rear axle 104, and the exterior surfaces on both sides of the vehicle body 106 are each provided with a symmetrically arranged extension shaft in the middle area between the front and rear axles 105 and 104; a balance beam shock absorbing system 101 with a pressure monitoring function as described above is arranged on both sides of the vehicle body 106, which is used to assemble the vehicle body 106 with the front axle 105 and the rear axle 104. The chassis equipped with the balance beam shock absorbing system 101 can reduce the vibration transmitted from the axle to the vehicle body 106 when the vehicle is running, and realize the functions of cargo weighing, bridge load tracking, etc. through the pressure monitoring device 2.

[0090] Further solutions, such as Fig.11 As shown, the extended shaft on the vehicle body 106 is inserted into the mounting seat 1-4 with a cylindrical structure on the corresponding balance beam 1, and a bearing 107 is installed in a tight fit between the mounting seat 1-4 and the facing circumferential surface of the extended shaft, so that the balance beam 1 can rotate around the extended shaft; the extended shaft is a stepped shaft, and a plurality of threaded holes are provided on the axial surface of the extended shaft. The pad 108 is tightly attached to the axial surface of the mounting seat 1-4, and the pad 108 is fixed to the extended shaft by a plurality of bolts 109. The balance beam 1 is axially limited by the combined action of the step and the pad 108; threaded holes corresponding to the plurality of mounting through holes on the bottom plate 3-2 of the rubber shock absorbing device 3 are provided on the front axle 105 and the rear axle 104. The bolts 102 pass through the mounting through holes and are tightened in the threaded holes to fix the rubber shock absorbing device 3 to the front axle 105 and the rear axle 104 together.

[0091] Further solution, embodiment 1: Fig.11 , Fig.12 , Fig.13 As shown, the balance beam 1 is a symmetrical structure, and there are two rubber shock absorbing devices 3, one of which is arranged between the front axle 105 and one end of the balance beam 1, and the other is arranged between the rear axle 104 and the other end of the balance beam 1; a pressure monitoring device 2 is arranged between the two side ends of the balance beam 1 and the corresponding rubber shock absorbing device 3, and the monitored pressure signals are output from both ends.

[0092] Embodiment 2: The balance beam 1 is of a symmetrical structure, and there are two rubber shock absorbing devices 3, wherein one rubber shock absorbing device 3 is arranged between the front axle 105 and one end of the balance beam 1, and the other rubber shock absorbing device 3 is arranged between the rear axle 104 and the other end of the balance beam 1; a pressure monitoring device 2 is arranged between one end of the balance beam 1 and the corresponding rubber shock absorbing device 3, and a pad having the same outer contour as the pressure monitoring device 2 is arranged between the other end of the balance beam and the corresponding rubber shock absorbing device 3, and the monitored pressure signal is output from one end of the pressure monitoring device 2.

[0093] The vehicle provided by the present invention is described below, and the vehicle described below and the chassis described above can be referenced to each other.

[0094] A vehicle provided by the present invention may include a chassis as described in any one of the above embodiments.

[0095] The beneficial effects achieved by the vehicle provided by the present invention are consistent with the beneficial effects achieved by the chassis provided by the present invention, and will not be described in detail here.

[0096] It should be noted that the above-mentioned vehicle may be a mining dump truck.

[0097] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0098] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0099] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A balance beam shock absorption system with pressure monitoring function, characterized in that: include: Balance beam; A rubber shock absorbing device is arranged below one end of the balance beam; A pressure monitoring device is arranged between the rubber shock absorbing device and the balance beam, and the pressure monitoring device and the rubber shock absorbing device are fixed together in a detachable manner by a first fastening component; The second fastening component is used to fix the balance beam, the pressure monitoring device and the rubber shock absorbing device together in a detachable manner.

2. The balance beam shock absorption system with pressure monitoring function according to claim 1, characterized in that: A universal rotating device is provided between the mounting planes facing the pressure monitoring device and the balance beam, which allows the pressure monitoring device to rotate slightly according to the load direction when the pressure monitoring device is unevenly loaded.

3. The balance beam shock absorption system with pressure monitoring function according to claim 2, characterized in that: A spherical protrusion is provided on the mounting surface of the balance beam, and a spherical groove is provided on the mounting surface of the pressure monitoring device. The size of the spherical protrusion is slightly larger than the size of the spherical groove. The universal rotating device is formed by the cooperation of the spherical protrusion and the spherical groove.

4. The balance beam shock absorption system with pressure monitoring function according to claim 2, characterized in that: An annular sealing gasket is also provided between the mounting planes facing the pressure monitoring device and the balance beam, wrapping the universal rotating device in its inner hole.

5. The balance beam shock absorption system with pressure monitoring function according to claim 1, characterized in that: The balance beam comprises: The main body of the balance beam is a box-shaped structure formed by welding a top plate, a bottom plate, a pair of side plates facing each other and a pair of vertical plates facing each other; wherein a coaxially arranged mounting hole is respectively provided in the central area of ​​the two side plates; A mounting seat of a cylindrical structure, which is inserted into the mounting holes of the two side plates and welded thereto, and is used to mount the balance beam on the vehicle body; At least one lining plate is arranged on the bottom plate of the balance beam directly above the pressure monitoring device. The top surface of the lining plate is a plane for being welded to the lower surface of the bottom plate after being bonded thereto. The central area of ​​the bottom surface of the lining plate is a spherical protrusion of an annular structure.

6. The balance beam shock absorption system with pressure monitoring function according to claim 5, characterized in that: The balance beam body also includes: The support seat of the cylindrical structure is arranged at the end of the balance beam body. The bottom annular surface of the support seat is coaxial with the through hole opened on the bottom plate and is welded to the upper surface of the bottom plate. The top of the support seat is inserted into the through hole opened on the top plate, and the top annular surface of the support seat is flush with the upper surface of the top plate.

7. The balance beam shock absorption system with pressure monitoring function according to claim 6, characterized in that: A bushing is inserted into the support seat, the through hole of the base plate, the central through hole of the lining plate and the central hole of the pressure monitoring device; the second fastening component is a central fixing bolt, which is inserted into the bushing and tightened in the central threaded hole of the rubber shock absorbing device.

8. The balance beam shock absorption system with pressure monitoring function according to claim 5, characterized in that: The side panel is in an inverted triangle structure or an equilateral triangle structure, and the side panels of different shapes can be selected to match the type of vehicle; When the side panels are of an equilateral triangle structure, the top panel is of a long flat panel structure, and the bottom panel is composed of a V-shaped panel structure in the middle and short flat panel structures on both sides; When the side plate is an inverted triangle structure, the top plate is composed of a V-shaped plate structure in the middle and short flat plate structures on both sides, and the bottom plate is a long flat plate structure.

9. The balance beam shock absorption system with pressure monitoring function according to claim 1, characterized in that: The pressure monitoring device is composed of a pressure monitoring device body, a sealing plate and a pressure monitoring component; the pressure monitoring device body is a symmetrical structure, an annular protrusion is provided at the center of the top surface of the pressure monitoring device body, and the central area of ​​the annular protrusion is set as a spherical groove; The main body of the pressure monitoring device is provided with a cylindrical hole extending vertically upward from the center of the bottom surface and arranged coaxially with the center hole of the annular protrusion. The cylindrical hole and the center hole of the annular protrusion constitute a central stepped hole of the main body of the pressure monitoring device. The sealing plate is buckled on the bottom of the central stepped hole in a tight fit; the pressure monitoring component is fixed in the central stepped hole.

10. The balance beam shock absorption system with pressure monitoring function according to claim 9, characterized in that: A cylindrical ring body coaxially arranged with the central hole of the annular protrusion extends vertically downward along the periphery of the central hole, a predetermined axial gap is left between the bottom surface of the cylindrical ring body and the sealing plate, and a predetermined radial gap is left between the outer circumferential surface of the cylindrical ring body and the inner circumferential surface of the cylindrical hole; In the predetermined radial gap, a plurality of elastic bodies are fixed uniformly and alternately along the entire circumference, strain gauges are arranged on the elastic bodies, and the plurality of strain gauges constitute the pressure monitoring component; at least one through hole connected to the cylindrical hole and used for the wire harness of the strain gauge to pass through is provided on the side elevation of the pressure monitoring device body; When the annular protrusion is subjected to pressure, the downward deformation drives the cylindrical ring body and the elastic body to move downward, the elastic body produces elastic deformation, and the strain gauge monitors the deformation signal and outputs the signal.

11. The balance beam shock absorption system with pressure monitoring function according to claim 1, characterized in that: The rubber shock absorbing device comprises: The rubber body is a cylindrical ring, and multiple annular lining plates vulcanized into one body are evenly arranged inside the rubber body; A top plate, arranged on the axial top surface of the rubber body, and the two are vulcanized into one, and the top plate is provided with a central threaded hole used in conjunction with the second fastening component; A bottom plate is arranged on the axial bottom surface of the rubber body, and the two are vulcanized into one, and a central through hole is provided on the bottom plate; A bottom sealing plate is arranged at the central through hole of the bottom plate, and the bottom sealing plate and the bottom plate are limited by a stopper structure and fixed by welding; The pull ring structure is used to limit the maximum height of the rubber shock absorber after being pulled, including: The upper connecting ring is a U-shaped structure as a whole, and the two free ends at the top are fixed to the central area of ​​the top plate; The lower connecting ring is an n-shaped structure as a whole, and the two free ends at the bottom are fixed on the central area of ​​the bottom sealing plate, and the lower connecting ring is buckled with the upper connecting ring at a vertical intersection.

12. The balance beam shock absorption system with pressure monitoring function according to claim 11, characterized in that: The outer peripheries of the top plate and the bottom plate are both protruded with rubber bodies, and a plurality of mounting through holes are respectively provided at the portions of the top plate and the bottom plate protruding from the rubber bodies; The first fastening component is a bolt, and the pressure monitoring device is provided with a plurality of threaded holes corresponding to the plurality of mounting through holes on the top plate. The bolts pass through the mounting through holes and are tightened in the threaded holes to fix the pressure monitoring device and the rubber shock absorbing device together; The vehicle axle is provided with threaded holes corresponding to a plurality of mounting through holes on the bottom plate one by one. Bolts pass through the mounting through holes and are screwed into the threaded holes to fix the rubber shock absorbing device and the vehicle axle together.

13. A chassis, characterized in that: include: Front axle and rear axle for assembling wheels; A vehicle body is arranged above the front axle and the rear axle, and the exterior surfaces of both sides of the vehicle body are each provided with a symmetrically arranged extension shaft in the middle area between the front and rear axles; A balance beam damping system with a pressure monitoring function as claimed in any one of claims 1 to 12 is arranged on both sides of the vehicle body, respectively, for assembling the vehicle body with the front axle and the rear axle.

14. A chassis according to claim 13, characterized in that: The extended shaft on the vehicle body is inserted into a mounting seat with a cylindrical structure on the corresponding balance beam, and a bearing is installed between the mounting seat and the facing peripheral surface of the extended shaft in a tight fit manner, so that the balance beam can rotate around the extended shaft; The extending shaft is a stepped shaft, and a plurality of threaded holes are arranged on the axial surface of the extending shaft. The pad is tightly attached to the axial surface of the mounting seat, and the pad is fixed to the extending shaft by a plurality of bolts. The balance beam is axially limited by the combined action of the step and the pad.

15. A chassis according to claim 13, characterized in that: The balance beam is a symmetrical structure, and the number of rubber shock absorbing devices is two, one of which is arranged between the front axle and one end of the balance beam, and the other is arranged between the rear axle and the other end of the balance beam; A pressure monitoring device is arranged between the two side ends of the balance beam and the corresponding rubber shock absorbing device, and the monitored pressure signal is output from both ends.

16. A chassis according to claim 13, characterized in that: The balance beam is a symmetrical structure, and the number of rubber shock absorbing devices is two, one of which is arranged between the front axle and one end of the balance beam, and the other is arranged between the rear axle and the other end of the balance beam; A pressure monitoring device is arranged between one end of the balance beam and the corresponding rubber shock-absorbing device, and a pad with the same outer contour as the pressure monitoring device is arranged between the other end of the balance beam and the corresponding rubber shock-absorbing device. The monitored pressure signal is output from one end of the assembled pressure monitoring device.

17. A vehicle, characterized in that: A balance beam shock absorption system with a pressure monitoring function comprising any one of claims 1 to 12; or, a chassis comprising any one of claims 13 to 16.

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