Weight measuring mechanism integrally installed on railway wagon and railway wagon

Abstract

The invention discloses a weight measuring mechanism for integrated installation of a rail wagon and the rail wagon, and belongs to the technical field of weight measuring mechanisms for integrated installation of rail wagons, the weight measuring mechanism comprises a seat body and a suppression disc supporting seat, the seat body is of a plate-shaped structure, a plurality of air path channels and air path through holes are formed in the seat body, and the suppression disc supporting seat is arranged on the side wall of the seat body; the actuating rod is arranged on the center line of a sleeper beam of the bottom frame, the upper end of the actuating rod is connected with the contact end of the restraining disc through a length adjusting mechanism, and a ball mechanism is arranged at the lower end of the actuating rod and penetrates through the support to be in sliding connection or intermittent connection with the side frame. According to the weight measuring mechanism integrally installed on the railway wagon, the air path channel is arranged in a hidden mode through the integrated installation base, the air leakage risk is reduced, meanwhile, the weight measuring mechanism is fixed through the integrated installation base, the lifting change of the side frame relative to the bottom frame and the weight measuring mechanism is transmitted through the connecting rod and the actuating rod, and then the change of an air path and air flow is controlled through the weight measuring mechanism; and the braking air pressure is regulated according to the vehicle load.

Description

Technical Field

[0001] The present invention belongs to the technical field of the weighing mechanism for integrated installation of railway freight cars, and more specifically, relates to a weighing mechanism for integrated installation of railway freight cars and a railway freight car. Background Art

[0002] The working principle of the KZW-A type empty and loaded vehicle automatic braking adjustment device: When the vehicle brakes, the compressed air in the auxiliary air cylinder enters the brake cylinder and simultaneously enters the lower chamber of the sensing valve, pushing the piston of the sensing valve upward. The movement distance upward controls the action of the sandwich valve in the piston, and further controls the action of the pressure limiting valve. The distance that the contact head of the sensing valve moves upward controls the action of the sandwich valve in the piston of the sensing valve, controls the air pressure above the pressure reducing air cylinder and the pressure limiting valve template, and further controls the action of the piston of the pressure limiting valve. By the action of the piston, the action of the sandwich valve in the pressure limiting valve is maintained, and the inflation of the auxiliary air cylinder to the brake cylinder is controlled to ensure that the brake cylinder pressure is automatically adjusted according to the change of the vehicle weight.

[0003] During the braking process of railway freight cars, in order to meet the braking force requirements under different load weights, the contact head of the sensing valve installed on the car body interacts with the contact plate installed in the middle of the crossbeam of the bogie to obtain the load weight of the railway freight car, and further realizes the stepless adjustment of the braking force of empty and loaded vehicles. The relative displacement amount between the crossbeam and the contact head of the sensing valve directly determines the magnitude of the braking force applied by the system.

[0004] Therefore, crossbeam supports are respectively arranged above the inner sides of the two side frames on the bogie (since the distance between the side frame and the rail surface does not change with the change of the vehicle load weight, the side frame can be used as a test benchmark) for installing the crossbeam. Through the cooperation of the crossbeam contact plate and the contact head of the restraint disc installed on the car body underframe, the load weight of the railway freight car is obtained, and further the stepless adjustment of the braking force of empty and loaded vehicles is realized. After the vehicle is fully assembled, it is necessary to measure the gap between the crossbeam contact plate and the contact head of the restraint disc to ensure that this gap needs to meet h1mm (currently, according to the different stiffnesses of the bogie pillow springs installed on domestic vehicles, it is divided into two types: 6±1mm and 3±1mm). If it cannot be met, it needs to be readjusted. The stability and accuracy of the gap between the crossbeam contact plate and the contact head of the restraint disc are the key to ensuring that the empty and loaded vehicles have appropriate braking forces under different load states. When the gap is too small, the braking force will be too large during the train braking, which is likely to cause the brake shoes to lock with the wheels, and the relationship between the vehicle wheel and rail changes from a rolling relationship to a sliding relationship, thus scratching the wheel tread surface and the rail surface; when the gap is too large, the braking force is too small, resulting in an extended braking distance and inability to stop according to the specified braking distance, affecting the train operation safety.

[0005] Since the weighing mechanism of the empty and load automatic adjustment device for railway freight cars such as existing railway ballast and coal hopper cars is installed under the center sill near the bolster at one end of the underframe, the crossbeam is installed on the bogie under the weighing mechanism, and the rest are installed above the underframe, there are problems such as cracks and breakages in the crossbeam, which has become one of the main faults affecting the safe operation of freight trains recently. Moreover, there are also problems with the weighing mechanism and the crossbeam, such as narrow assembly and maintenance installation space, long adjustment operation time, low efficiency, high cost, and the braking performance of the vehicle will be affected when the adjustment is not in place. With the rapid development of railway freight cars in China and the improvement of the overall design and manufacturing level of vehicles, the existing crossbeam structure can no longer meet the requirements of high repair and manufacturing efficiency, convenient adjustment, low cost, easy disassembly and installation, and safe operation. Therefore, it is expected to develop a new weighing mechanism for the empty and load automatic adjustment device of railway freight cars installed on the underframe of the car body to replace the weighing device technology of the existing crossbeam. Summary of the Invention

[0006] The object of the present invention is to provide a weighing mechanism integrally installed on a railway freight car to solve the problem that the existing crossbeam structure can no longer meet the requirements of high repair and manufacturing efficiency, convenient adjustment, low cost, easy disassembly and installation, and safe operation in the prior art.

[0007] To achieve the above object, the present invention provides a weighing mechanism integrally installed on a railway freight car, including: An integrally installed seat, the integrally installed seat is arranged on the underframe, the integrally installed seat includes a seat body and a suppressor disc support seat, the seat body is a plate-like structure, and a plurality of air passage channels and air passage through holes are arranged inside, corresponding to the main valve, emergency valve, pressure limiting valve, reducing reservoir, accelerating release reservoir, auxiliary reservoir and main pipe respectively, and the suppressor disc support seat is arranged on the side wall of the seat body for vertically connecting the weighing mechanism; An actuating rod, the actuating rod is arranged on the center line of the bolster of the underframe, the upper end of the actuating rod is connected with the contact end of the suppressor disc through a length adjusting mechanism, and a ball mechanism is arranged at the lower end of the actuating rod; A bracket, the bracket is arranged on the center line of the bolster, and the ball mechanism passes through the bracket and is slidably connected or intermittently connected with the side frame; The length adjusting mechanism includes: A connecting rod, one end of the connecting rod is provided with an axial threaded hole, an axial oblong hole is arranged on the outer periphery of the threaded hole, a screw is arranged at the contact end of the suppressor disc, and a through hole matching with the oblong hole is arranged on the screw, and a first round pin is arranged in the oblong hole and the through hole; The other end of the connecting rod is provided with an inner round hole, and a plurality of first pin holes are arranged on the side wall of the inner round hole, and a second pin hole matching with the first pin hole is arranged at the upper end of the actuating rod.

[0008] Optionally, the suppression disc support seat includes: A support, the support is cylindrical, and two oil storage grooves are arranged at intervals on the inner wall. A communication groove is arranged between the two oil storage grooves, and seal ring installation grooves are respectively arranged at intervals on both sides of the two oil storage grooves; An oil cup, the oil cup is obliquely arranged on the outer periphery of the support and communicates with the oil storage groove; A left mounting plate and a right mounting plate, the left mounting plate and the right mounting plate are symmetrically arranged on both sides of the support, and the left mounting plate and the right mounting plate are respectively Z-shaped and used for connecting with the seat body.

[0009] Optionally, the weighing mechanism includes: A suppression disc, the suppression disc includes a smooth rod portion, one end of the smooth rod portion is provided with a disc portion, the other end of the smooth rod portion is provided with the screw rod, the screw rod is connected with the connecting rod, and a disc-shaped spacer is arranged between the disc portion and the suppression disc support seat; On one side wall of the seat body, a second bolt hole, an air passage hole and a first bolt hole are horizontally arranged. The second bolt hole is used for connecting with the suppression disc support seat, the air passage hole and the first bolt hole are used for installing a sensing valve, the contact rod of the sensing valve is arranged upward and is located directly below the disc portion, and a dust cover is arranged on the contact rod.

[0010] Optionally, a return spring is further included. A counterbore is arranged at the lower end of the support, the return spring is sleeved on the smooth rod portion of the suppression disc, and one end of the return spring is arranged in the counterbore, A spring seat is arranged at one end of the smooth rod portion of the suppression disc close to the screw rod, and the other end of the return spring is connected with the spring seat.

[0011] Optionally, the ball mechanism includes: A restoration spring seat, the restoration spring seat is arranged on the outer periphery of the acting rod; A positioning nut, one end of the positioning nut is connected with a ball through a tapered hole in a rolling manner, and the other end of the positioning nut is connected with the acting rod; A restoration spring, the restoration spring is sleeved on the acting rod and is located between the restoration spring seat and the bracket.

[0012] Optionally, the acting rod is provided with a first mounting hole for a third round pin, and the positioning nut is provided with a second mounting hole for a third round pin.

[0013] Optionally, there is a gap h between the ball mechanism and the side frame when the vehicle is empty.

[0014] Optionally, the bracket includes a guiding cylinder, an installation seat connected to the bolster is arranged on the outer periphery of the guiding cylinder, and a lubricating oil cup and a lubricating oil groove are arranged on the guiding cylinder.

[0015] Optionally, the suppression disc, the actuating rod and the connecting rod are coaxially arranged.

[0016] The present invention also provides a railway freight car, including the weighing mechanism integrally installed on the above-mentioned railway freight car.

[0017] The present invention provides a weighing mechanism integrally installed on a railway freight car, and its beneficial effects are as follows: The weighing mechanism integrally installed on the railway freight car hides and arranges the air circuit channel through the integral installation seat, reduces the air leakage risk, and at the same time fixes the weighing mechanism through the integral installation seat to provide support and fixation for the weighing mechanism. The lifting changes of the side frame relative to the underframe and the weighing mechanism are transmitted through the connecting rod and the actuating rod, and then the changes of the air circuit and the air flow are controlled through the weighing mechanism, and then the braking air pressure is adjusted according to the vehicle load.

[0018] Other features and advantages of the present invention will be described in detail in the following specific implementation part. Description of the Drawings

[0019] By describing the exemplary embodiments of the present invention in more detail in conjunction with the drawings, the above-mentioned and other objects, features and advantages of the present invention will become more obvious. Among them, in the exemplary embodiments of the present invention, the same reference numerals generally represent the same components.

[0020] Figure 1 The structural schematic diagram of the front view of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention is shown.

[0021] Figure 2 The structural schematic diagram of the right view of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention is shown.

[0022] Figure 3 The structural schematic diagram of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention when in the heavy vehicle release position is shown.

[0023] Figure 4 The structural schematic diagram of the base of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention is shown.

[0024] Figure 5 The structural schematic diagram of the left view of the base of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention is shown.

[0025] Figure 6Shows a schematic structural diagram of an integrated mounting base of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0026] Figure 7 Shows a schematic structural diagram of a suppression disk support seat of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0027] Figure 8 Shows a schematic right - view structural diagram of a suppression disk support seat of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0028] Figure 9 Shows a schematic top - view structural diagram of a suppression disk support seat of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0029] Figure 10 Shows a schematic structural diagram of a support of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0030] Figure 11 Shows a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention Figure 10 B - B cross - sectional view.

[0031] Figure 12 Shows a schematic top - view structural diagram of a support of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0032] Figure 13 Shows a schematic structural diagram of a connecting rod of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0033] Figure 14 Shows a schematic structural diagram of an actuating rod of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0034] Figure 15 Shows a schematic structural diagram of a bracket of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0035] Figure 16 Shows a schematic top - view structural diagram of a bracket of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0036] Figure 17 Shows a schematic structural diagram of a guide cylinder of a weighing mechanism integrally mounted on a railway freight car according to an embodiment of the present invention.

[0037] Figure 18Shows a C-C cross-sectional view of the guide cylinder of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention.

[0038] Figure 19 Shows a schematic structural view of the mounting seat of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention.

[0039] Figure 20 Shows a schematic structural view of the limit seat of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention.

[0040] Figure 21 Shows a schematic structural view of the restoring spring seat of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention.

[0041] Figure 22 Shows a schematic structural view of the positioning nut of a weighing mechanism integrally installed on a railway freight car according to an embodiment of the present invention.

[0042] Description of reference numerals: 1. Base; 2. Integrated mounting base; 3. Suppression disc support base; 4. Connecting rod; 5. Acting rod; 6. Bracket; 7. Limiting seat; 8. Restoration spring; 9. Restoration spring seat; 10. Positioning nut; 11. Steel ball; 1.1. Seat plate; 1.2. Mounting hole; 2.1. Seat body; 2.2. Second bolt hole; 2.3. First bolt hole; 2.4. Gas passage hole; 2.5. First screw mounting threaded hole; 3.1. Left mounting plate; 3.2. Support; 3.3. Right mounting plate; 3.2.1. Cylinder; 3.2.2. Sealing ring mounting groove; 3.2.3. Oil storage tank; 3.2.4. Counterbore; 3.2.5. Oil cup; 4.1. Rod body; 4.2. Connecting internal thread; 4.3. First round pin mounting oblong hole; 4.4. Inner round hole; 4.5. First pin hole; 5.1. Rod body; 5.2. Second pin hole; 5.3. External thread; 5.4. Third round pin first mounting hole; 5.5. Tapered hole; 6.1. Guide tube; 6.2. Mounting base; 6.1.1. Round steel; 6.1.2. Sealing ring; 6.1.3. Lubricating oil groove; 6.1.4. Return spring mounting counterbore; 6.1.5. Lubricating oil cup; 6.2.1. First steel plate; 6.2.2. Second screw mounting oblong hole; 6.2.3. Guide tube connecting hole; 7.1. Steel plate; 7.2. Guide tube limiting hole; 9.1. Disc; 9.2. Restoration spring mounting counterbore; 9.3. Central through hole; 10.1. Stud; 10.2. Third round pin second mounting hole; 10.3. Internal thread; 10.4. Tapered hole; 2b. Weighing mechanism; 2.1b. Suppression disc; 2.2b. Disc spacer; 2.3b. Dust cover; 2.6b. Sensing valve; 2.7b. Return spring; 2.8b. Spring seat; 11b. Underframe; 11.1b. Center beam; 11.2b. Pillow beam; 11.3b. Floor; 11.4b. Side beam; 14b. Bogie; 14.1b. Bolster; 14.2b. Wheelset; 14.3b. Side frame. Detailed implementation mode

[0043] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0044] As Figure 1-22 shown, a weighing mechanism for integrated installation of a railway freight car includes: Integrated mounting base 2, the integrated mounting base 2 is arranged on the underframe 11b, the integrated mounting base 2 includes a seat body 2.1 and a suppressor disc support base 3, the seat body 2.1 is a plate-like structure, and a plurality of air passage channels and air passage through holes are arranged inside, corresponding to the main valve, emergency valve, pressure limiting valve, pressure reducing cylinder, accelerating release cylinder, auxiliary air cylinder and main pipe respectively. The suppressor disc support base 3 is arranged on the side wall of the seat body 2.1 for vertically connecting the weighing mechanism 2b; Actuating rod 5, the actuating rod 5 is arranged on the center line of the bolster 11.2b of the underframe 11b. The upper end of the actuating rod 5 is connected to the contact end of the suppressor disc 2.1b through a length adjusting mechanism. The lower end of the actuating rod 5 is provided with a ball mechanism; Bracket 6, the bracket 6 is arranged on the center line of the bolster 11.2b. The ball mechanism passes through the bracket 6 and is slidably connected or intermittently connected to the side frame 14.3b; The length adjusting mechanism includes: Connecting rod 4, one end of the connecting rod 4 is provided with an axial threaded hole, and an axial oblong hole 4.3 is arranged on the outer periphery of the threaded hole. The contact end of the suppressor disc 2.1b is provided with a screw rod, and a through hole matching with the oblong hole 4.3 is arranged on the screw rod. The first round pin is arranged in the oblong hole 4.3 and the through hole; The other end of the connecting rod 4 is provided with an inner round hole 4.4, and a plurality of first pin holes 4.5 are arranged on the side wall of the inner round hole. The upper end of the actuating rod 5 is provided with a second pin hole 5.2 matching with the first pin holes 4.5.

[0045] Specifically, the air passage channels are arranged in a concealed manner through the integrated mounting base 2 to reduce the risk of air leakage. At the same time, the weighing mechanism 2b is fixed through the integrated mounting base 2 to provide support and fixation for the weighing mechanism 2b. The lifting change of the side frame 14.3b relative to the underframe 11b and the weighing mechanism 2b is transmitted through the connecting rod 4 and the actuating rod 5. Furthermore, the change of the air passage and air flow is controlled through the weighing mechanism 2b, and then the braking air pressure is adjusted according to the vehicle load.

[0046] At the same time, the connecting rod 4 and the actuating rod 5 can be adjusted in a spiral manner, so that the weighing mechanism 2b can adapt to the change of the wear compensation distance. The ball mechanism can reduce the frictional resistance, adapt to the use of the vehicle during cornering, and extend the service life.

[0047] Furthermore, when the vehicle is empty or has a low load, the roller mechanism may not contact the side frame 14.3b, reducing the amount of wear.

[0048] In this embodiment, the suppressor disc support base 3 includes: Support 3.2, the support 3.2 is cylindrical, and two oil storage grooves 3.2.3 are arranged at intervals on the inner wall. A communication groove is arranged between the two oil storage grooves 3.2.3. Sealing ring installation grooves 3.2.2 are arranged at intervals on both sides of the two oil storage grooves 3.2.3; The oil cup 3.2.5 is inclined and arranged on the outer periphery of the support 3.2, and is communicated with the oil storage tank 3.2.3; The left mounting plate 3.1 and the right mounting plate 3.3 are symmetrically arranged on both sides of the support 3.2. The left mounting plate 3.1 and the right mounting plate 3.3 are respectively in a Z shape and are used for connecting with the seat body 2.1.

[0049] Specifically, the weighing mechanism 2b is fixed by the suppression disk support seat 3 to ensure the stability of the weighing mechanism 2b relative to the seat body 2.1. Lubricating oil is supplemented to the oil storage tank 3.2.3 through the oil cup 3.2.5.

[0050] In this embodiment, the weighing mechanism 2b includes: The suppression disk 2.1b, the suppression disk 2.1b includes a smooth rod part. One end of the smooth rod part is provided with a disk part, the other end of the smooth rod part is provided with a screw rod, the screw rod is connected with the connecting rod 4, and a disk pad 2.2b is arranged between the disk part and the suppression disk support seat 3; On one side wall of the seat body 2.1, a second bolt hole 2.2, an air passage hole 2.4 and a first bolt hole 2.3 are horizontally arranged. The second bolt hole 2.2 is used for connecting with the suppression disk support seat 3, and the air passage hole 2.4 and the first bolt hole 2.3 are used for installing the sensing valve 2.6b. The touch rod of the sensing valve 2.6b is arranged upward and is located directly below the disk part. A dust-proof cover 2.3b is arranged on the touch rod.

[0051] Specifically, the weighing mechanism 2b can be directly improved and used on the basis of the existing technology. The transmission is extended through the connecting rod 4 and the acting rod 5, and positioning is carried out through the suppression disk support seat 3. The air nozzle is adaptively arranged on the integrated mounting seat 2 and the weighing mechanism 2b.

[0052] In this embodiment, a return spring 2.7b is further included. A counterbore 3.2.4 is arranged at the lower end of the support 3.2. The return spring 2.7b is sleeved on the smooth rod part of the suppression disk 2.1b, and one end of the return spring 2.7b is arranged in the counterbore 3.2.4. A spring seat 2.8b is arranged at the end of the smooth rod part of the suppression disk 2.1b close to the screw rod, and the other end of the return spring 2.7b is connected with the spring seat 2.8b.

[0053] Specifically, the return spring 2.7b provides a force to make the ball mechanism close to the side frame 14.3b.

[0054] In this embodiment, the ball mechanism includes: The restoration spring seat 9 is arranged on the outer periphery of the acting rod 5; The positioning nut 10, one end of the positioning nut 10 is in rolling connection with a ball 11 through a tapered hole 10.4, and the other end of the positioning nut 10 is connected with the acting rod 5; The restoring spring 8 is sleeved on the actuating rod 5 and is located between the restoring spring seat 9 and the bracket 6.

[0055] Specifically, the restoring spring 8 provides a force to move the ball mechanism closer to the side frame 14.3b.

[0056] In this embodiment, the actuating rod 5 is provided with a first mounting hole 5.4 for the third round pin, and the positioning nut 10 is provided with a second mounting hole 10.2 for the third round pin.

[0057] Specifically, the actuating rod 5 and the positioning nut 10 are assembled with the third round pin through the cooperation of the first mounting hole 5.4 for the third round pin and the second mounting hole 10.2 for the third round pin.

[0058] In this embodiment, there is a gap h1 between the ball mechanism and the side frame 14.3b when the vehicle is empty.

[0059] Specifically, the empty vehicle gap connection reduces the wear of the ball mechanism.

[0060] In this embodiment, the bracket 6 includes a guide cylinder 6.1. An installation seat 6.2 for connecting with the bolster 11.2b is arranged on the outer periphery of the guide cylinder 6.1, and a lubricating oil cup and a lubricating oil groove are arranged on the guide cylinder 6.1.

[0061] Specifically, lubricating oil is replenished through the lubricating oil cup for lubrication.

[0062] In this embodiment, the suppression disc 2.1b, the actuating rod 5 and the connecting rod 4 are coaxially arranged.

[0063] Specifically, the coaxial arrangement ensures direct and stable force transmission.

[0064] The present invention also provides a railway freight car, including the weighing mechanism integrally installed on the above-mentioned railway freight car.

[0065] When the weighing mechanism integrally installed on a railway freight car in this embodiment is in use, taking the installation and use as an example: A weighing mechanism integrally installed on a railway freight car is arranged on the floor 11.3b at one end of the car body underframe 11b. This mechanism mainly consists of a base 1, an integral mounting seat 2, a suppression disc support seat 3, a connecting rod 4, an actuating rod 5, a bracket 6, a limit seat 7, a restoring spring 8, a restoring spring seat 9, a positioning nut 10, steel balls 11, a suppression disc 2.1b, a disc spacer 2.2b, a dust cover 2.3b, a sensing valve 2.6b, a return spring 2.7b, a spring seat 2.8b, sealing rings and fasteners, etc. To improve the interchangeability of parts and reduce the manufacturing and repair costs, the suppression disc 2.1b, the disc spacer 2.2b, the dust cover 2.3b, the sensing valve 2.6b, the return spring 2.7b, the spring seat 2.8b, the sealing rings and fasteners, etc. can still adopt the mature parts of the existing weighing mechanism.

[0066] Among them, the integrated mounting base 2 and the base 1 are connected by a number of first screws, first flat washers and first elastic washers; the sensing valve 2.7b and the integrated mounting base 2 are connected by two first bolts, first nuts and second elastic washers; the suppressor disc support base 3 and the integrated mounting base 2 are connected by four second bolts, second nuts and third elastic washers; the lower part of the suppressor disc 2.1b is threadedly connected to the upper part of the connecting rod 4 and then connected by a first round pin, a second flat washer and a first split pin; the upper part of the actuating rod 5 is inserted into the inner circular hole of the lower part of the connecting rod 4 and then connected by a second round pin, a third flat washer and a second split pin; the lower part of the bracket 6 is inserted into the floor process hole and then connected to the floor threaded hole by a second screw, a fourth flat washer and a fourth elastic washer; after the actuating rod 5 is inserted into the bracket 6, a return spring 8, a return spring seat 9, a steel ball 11 and a positioning nut 10 are assembled in sequence at its lower part, and then connected and positioned by a third round pin, a fifth flat washer and a third split pin.

[0067] The underframe 11b of the railway freight car body involved in the present invention is composed of a center sill 11.1b, a bolster 11.2b, a floor 11.3b, side sills 11.4b, etc. The bogie 14b installed on the railway freight car involved in the present invention is composed of a bolster 14.1b, side frames 14.3b and wheelsets 14.2, etc. A lower side bearing is provided at each end of the bolster. Upper side bearings are respectively provided at the positions of the bolster lower cover plates corresponding to the lower side bearings below the bolster. The upper side bearings and the lower side bearings adopt a constant contact mode.

[0068] In addition, process holes through which the brackets 6 pass and corresponding threaded holes required for installation are respectively provided corresponding to one end of the floor 11.3b at the center line of the bolster 11.2b that needs to be matched with the underframe 11b of the present invention, and a limiting seat 7 is welded between the two webs below the bolster directly below the process hole so that the center of the limiting seat is aligned with the center of the process hole; in addition, a process circular hole through which the accessories connected to the lower part of the actuating rod 5 pass is provided at the lower cover plate below the corresponding bolster.

[0069] The base 1 is of a U-shaped structure, and the number is at least two. A number of long circular holes along the vehicle transverse direction are correspondingly provided on its upper plane. The base opening faces downward along the vehicle length direction and is welded to the floor, and the integrated mounting base 2 is mainly connected and fixed through fasteners.

[0070] The integrated mounting seat 2 has a highly integrated structure. Its seat body 2.1 is a cuboid structure parallel to the length direction of the vehicle body. A number of air passage through-holes are provided inside it, and connection air ports and fastening mounting holes for accessories such as the main valve, emergency valve, pressure limiting valve, reducing pressure reservoir, accelerating release reservoir, auxiliary reservoir, and main pipe are correspondingly provided on the two large-plane sides. Through the setting of the integrated mounting seat with this highly integrated structure, the length of pipeline connection and pipeline leakage points can be reduced or avoided, the propagation time of compressed air in the braking system is shortened, the sensitivity of air braking is improved, the weight of the air braking device can be reduced, the leakage probability between braking accessories can be lowered, and the assembly efficiency of the air braking device can be increased, saving the manufacturing and repair costs of the vehicle. In addition, 4 second bolt holes 2.2 for mounting the suppression disc support seats need to be symmetrically provided on the large-plane side close to the outside of the seat body. Two air passage holes 2.4 connecting the sensing valve are provided directly below the above vertical symmetry center line, and 2 first bolt holes 2.3 for mounting the sensing valve are symmetrically arranged on the left and right between the two air passage holes connecting the sensing valve. A number of first screw mounting threaded holes 2.5 are arranged along the length direction at the bottom of the seat body. For the convenience of description, only a part of the structural schematic diagram of the integrated mounting seat of the present invention is shown.

[0071] The suppression disc support seat 3 is connected to the integrated mounting seat 2 through 4 second bolts, second nuts, and third elastic washers, mainly playing the roles of supporting, limiting, lubricating, and guiding the suppression disc 2.1b, and is composed of a support 3.2, a left mounting plate 3.1, and a right mounting plate 3.3. The left mounting plate 3.1 and the right mounting plate 3.3 are Z-shaped steel plate bending structures composed of two symmetric planes and one vertical plane. One end of the plane is welded to the support group, and two long round holes are provided on the other end plane, facilitating its connection with the integrated mounting seat 2 and horizontal adjustment; the support 3.2 is a cylindrical structure 3.2.1 with an inner hole processed from round steel. Axial and radial oil storage grooves 3.2.3 are provided in the middle of the inner hole. A sealing ring mounting groove 3.2.2 and a sealing ring are respectively provided at the end of the annular oil storage groove. An oil cup 3.2.5 communicating with the oil storage groove is provided above the outer side of the cylinder, and a spring mounting counterbore 3.2.4 for mounting the upper part of the positioning and reset spring 2.7b is provided at the lower part of the inner hole.

[0072] The connecting rod 4 is a rod structure processed from round steel, mainly playing the role of connecting the suppression disc 2.1b and the actuating lever 5 and being able to adjust the distance between the two within a certain range. One end of the rod body is provided with a connecting internal thread 4.2 and a first round pin mounting long round hole 4.3 for connecting with the lower screw of the suppression disc and adjusting the distance. An inner round hole 4.4 is provided at the other end of the rod body, and a number of first pin holes 4.5 are arranged along its outer periphery for connecting with the actuating lever and adjusting the distance.

[0073] The rod body 5.1 of the actuating rod 5 is processed from round steel. Its main function is to sense and transmit the vertical displacement and acting force of the car body relative to the upper plane of the side frame of the bogie due to rigid contact when the vehicle is under different loads. The side frame maintains a constant height relative to the rail surface during different vehicle loads. The displacement and acting force are finally transmitted to the suppression disc 2.1b through the device of the present invention. To facilitate the connection with the connecting rod 4 and distance adjustment, several second pin holes 5.2 are provided on the periphery of one end cylinder of the rod body. An external thread 5.3 and a first mounting hole 5.4 of a third round pin with a radial long circular hole are provided on the outer periphery of the other end cylinder of the rod body. A tapered hole 5.5 is provided at the end to facilitate the positioning and installation of the steel ball 11.

[0074] The bracket 6 is composed of a guide cylinder 6.1 and a mounting seat 6.2. Its main functions are to guide the actuating rod 5, lubricate it, and provide a restoring force together with the spring. During assembly, the lower part of the bracket is successively inserted into the process hole corresponding to the passage of the bracket 6 provided on one end of the floor 11.3b at the center line of the bolster 11.2b and the guide cylinder limit hole 7.2 provided in the middle of the limit seat 7. Then, 4 second screws, fourth flat washers, and fourth elastic washers 29 are used to adjust and connect the long circular hole on its mounting seat 6.2 with the threaded hole on the floor.

[0075] The guide cylinder 6.1 is processed from round steel 6.1.1. A circular through hole is provided along its axis center. Radial and axial lubricating oil grooves 6.1.3 are provided in the middle. Sealing ring grooves and sealing rings 6.1.2 are respectively provided at both ends of the two radial lubricating oil grooves. An oil cup 6.1.5 communicating with the lubricating oil groove is provided above the outer side of the round steel. A reset spring mounting counterbore 6.1.4 for mounting the upper part of the restoring spring 8 is provided below its circular through hole.

[0076] The mounting seat 6.2 is a rectangular structure processed from the first steel plate 6.2.1. A guide cylinder connection hole 6.2.3 is provided at its center. Four second screw mounting long circular holes 6.2.2 for installation and adjustment are symmetrically provided at both ends of the hole.

[0077] The limit seat 7 is a rectangular structure processed from the second steel plate 7.1. A guide cylinder limit hole 7.2 is provided at its center. It is welded between the two webs below the bolster at the position directly below the process hole corresponding to the passage of the bracket 6 provided on one end of the floor 11.3b at the center line of the bolster 11.2b. Its main function is to indirectly laterally limit the rod body 5.1 of the actuating rod 5 by laterally limiting the guide cylinder, thereby improving the stiffness of the actuating rod.

[0078] The restoring spring seat 9 is processed into a disc 9.1 structure with a center through hole 9.3 in the middle through which the lower part of the actuating rod can pass. To facilitate the positioning of the restoring spring 8, a restoring spring mounting counterbore 9.2 is provided directly above the center through hole.

[0079] The positioning nut 10 is a polygonal stud 10.1 structure processed from a polygonal bar stock. An internal thread 10.3 is provided in the middle and upper part of its center. The diameter of this internal thread must be larger than the diameter of the steel ball 11. A tapered hole 10.4 is provided at the bottom of its center to facilitate the positioning and installation of the steel ball 11. To facilitate the adjustment, positioning, and anti-loosening of the vertical position of the positioning nut 10, a number of third round pin second mounting holes 10.2 are radially provided at the threaded section of the positioning nut, which is convenient for connecting the positioning nut and the lower part of the actuating rod by using a third round pin.

[0080] Finally, during assembly, after inserting the lower part of the rod body 5.1 of the actuating rod 5 into the guide cylinder 6.1 of the bracket 6, a restoring spring 8 and a restoring spring seat 9 are successively inserted into its lower part, and a steel ball 11 is loaded into the bottom tapered hole. The lower part of the actuating rod is locked by using the positioning nut 10. Then, the positioning nut is connected and positioned by using a third round pin, a fifth flat washer, and a third split pin.

[0081] The steel ball 11 is processed from a wear-resistant material. It is positioned and movably installed at the lower end of the actuating rod by using the tapered hole at the lower end of the actuating rod and the tapered hole below the positioning nut. To enable the steel ball to rotate flexibly, the distance between the positioning nut and the actuating rod can be adjusted so that there is a certain gap between the steel ball and the contact surface and the frictional resistance can be reduced by reducing the contact area.

[0082] When the vehicle is in an empty car state, after the actuating rod 5 is assembled, the distance from the lowest point of the steel ball 11 installed at its lower part to the upper plane of the side frame is the same as the distance between the existing car weighing mechanism and the touch plate provided in the middle of the cross beam, both being h1. When the vehicle is loaded with goods, the steel ball 11 provided at the lower part of the actuating rod can rotate or slide relative to the upper plane of the side frame 14.3b of the corresponding bogie, which can reduce the frictional resistance, improve the force on the actuating rod, and avoid deformation. Moreover, the actuating rod is directly above the center line of the upper plane of the side frame, so that the steel ball 11 always contacts the upper plane within a certain range at the center of the side frame when the vehicle loaded with goods runs on a straight or curved track, and can rotate and slide relative to the upper plane of the side frame and along the longitudinal and transverse directions of the side frame. For example, when a vehicle loaded with goods passes through a curve, the relative longitudinal and transverse moving frictional force and wear amount between the steel ball 11 and the upper plane of the side frame can be reduced.

[0083] This device has the functions of anti-loosening and anti-dropping, and has good self-safety.

[0084] Its installation sequence and usage functions are as follows: Pre-set process holes for the bracket 6 to pass through and corresponding threaded holes required for installation at one end of the floor 11.3b at the center line of the bolster 11.2b on the underframe 11b respectively, and weld the limit seats 7 in groups between the two webs under the bolster directly below the process holes so that the centers of the limit seats are aligned with the centers of the process holes; in addition, process round holes for the accessories connected to the lower part of the actuating lever 5 to pass through shall be provided at the lower cover plate under the corresponding bolster, and each component shall be processed or assembled as shown in the figure in advance.

[0085] During assembly, first weld the base 1 with the opening facing down along the vehicle length direction on the floor, and then use the first screw, the first flat washer and the first elastic washer to connect and fix the integrated mounting seat 2 on the base; Then align the connecting air ports and the mounting holes for fastening of the relevant connecting branch pipes and other fittings of the main valve, the emergency valve, the pressure limiting valve, the reducing reservoir, the accelerating release reservoir, the auxiliary reservoir and the main pipe with the corresponding holes of the integrated mounting seat respectively, and complete the assembly with fasteners and sealing rings; Then install two sealing rings into the upper and lower air path counterbores of the sensing valve 2.6b respectively, align the air port and the mounting hole of the sensing valve with the corresponding air port and mounting hole of the integrated mounting seat 2 respectively, and then use two first bolts, the first nuts and the second elastic washers for connection. Subsequently, insert the dust cover 2.3b into the head of the sensing valve. At this time, the assembly of the sensing valve is completed; Then align the holes for installing the suppression disc support seat 3 and the integrated mounting seat 2, and use the second bolts, the second nuts and the third elastic washers for connection and fastening; Then insert the disc spacer 2.2 from the screw of the suppression disc 2.1b to the root of its disc, and then pass the screw of the suppression disc downward into the inner hole of the support 3.2 of the suppression disc support seat 3. At this time, the disc spacer on the screw of the suppression disc contacts the lower plane of the suppression disc and the upper plane of the support 3.2. At this time, the distance between the lower plane of the suppression disc and the dust cover assembled on the upper part of the sensing valve is 6mm; Then insert the end of the rod body 5.1 with the tapered hole 5.5 of the actuating lever 5 into the round through hole of the guide cylinder 6.1 of the bracket 6, and insert the assembled bracket and the lower part of the actuating lever into the process hole for the bracket 6 to pass through at one end of the floor 11.3b at the center line of the bolster 11.2b and the guide cylinder limit hole 7.2 provided in the middle of the limit seat 7 in sequence. After adjusting the mounting hole on the mounting seat 6.2 to be aligned with the corresponding threaded hole on the floor, use the second screw, the fourth flat washer and the fourth elastic washer to adjust, connect and fasten the long round hole on the mounting seat 6.2 and the floor threaded hole. For the convenience of installation, the actuating lever 5 can also be inserted into the round through hole from below the guide cylinder 6.1 of the bracket 6 during installation.

[0086] Then, after successively sleeving the return spring 2.7b and the spring seat 2.8b onto the lower part of the suppression disc screw, connect the upper thread of the connecting rod 4 to the suppression disc screw. After adjusting to the appropriate position, use the first round pin, the second flat washer, and the first split pin for anti-loosening and positioning connection. Then, manually move the suppression disc upward so that the inner round hole at the lower part of the connecting rod 4 is inserted into the upper part of the actuating rod 5. After adjusting to the appropriate position, use the second round pin, the third flat washer, and the second split pin for anti-loosening and positioning connection. Then, after successively assembling the return spring 8, the return spring seat 9, the steel ball 11, and the positioning nut 10 at the lower part of the actuating rod 5, and after adjusting to the appropriate position, use the third round pin, the fifth flat washer, and the third split pin for anti-loosening and positioning connection.

[0087] Then, place the vehicle body with the assembly of the device of the present invention on the bogie, and adjust the gap between the lowest point of the steel ball 11 provided below the actuating rod 5 and the upper plane of the side frame of the bogie to be h1.

[0088] Finally, after adjusting each position to be appropriate, insert the split pin and split the open end of each split pin to 60°.

[0089] At this time, the assembly and adjustment of the device of the present invention on the vehicle have been completed.

[0090] The disassembly process of the device is opposite to its installation process.

[0091] Using the integrated installation structure of the device of the present invention, compared with the existing vehicle, it reduces the connecting pipelines, shortens the propagation time of compressed air, improves the sensitivity and braking performance of the air braking system. Since the number of air path connection points is small, the leakage probability corresponding to each connection point is also small, so the device has good sealing performance. Moreover, the device has the advantages of convenient repair, high efficiency, low cost, and good safety. It not only solves various problems existing in the cross beam of the existing vehicle, but also solves the safety problems caused by excessive or too small braking cylinder pressure due to excessive wear of the contact head of the existing weighing mechanism.

[0092] The device of the invention is installed on the floor of the chassis, eliminating the cross beam 1´ and the cross beam support structure of the existing car. During the maintenance operation, it is no longer necessary to perform welding operations and drill under the car to work, which solves the problems of inconvenient adjustment of the gap between the contact of the weighing mechanism installed on the existing railway hopper car and the touch plate on the middle part of the cross beam, long operation time, high production and maintenance costs, high labor intensity and low adjustment efficiency; it solves the problem of welding a certain thickness of adjustment pad on the touch plate on the middle part of the cross beam during the maintenance of the existing car to ensure that the adjustment amount of the contact itself is very small and cannot meet the adjustment requirements of the gap between the contact and the touch plate, but if the welding quality is not high, the life of the cross beam will be reduced or even scrapped, and the use of electric welding will also cause maintenance environmental pollution, long operation time, low efficiency and high cost; it solves the problem of existing railway hopper cars Such models have the problem of complicated adjustment process and low efficiency of adjusting pads between the two ends of the cross beam and the cross beam supports set on the inner sides of the two side frames; it solves the problem that the measurement of the vertical movement of the adjustment bolts on the two ends of the existing cross beam and the cross beam supports on the side frames requires the operator to carefully and repeatedly confirm the scale of the steel ruler, which is very inefficient. If the movement exceeds the limit, it will affect the braking performance and cause driving safety problems; it solves the problem that the vibration generated during the operation of existing railway freight cars and the alternating vibration stress easily lead to cracks and breakage of the cross beam, causing driving safety problems; it solves the problem that due to the small space under the frame, when assembling and repairing the weighing mechanism and the cross beam, the operator needs to go in and out of the ditch under the car many times or raise the car repeatedly, and sometimes the bogie needs to be repeatedly pushed out, resulting in low assembly and maintenance efficiency.

[0093] The mechanism of the invention adopts a connecting rod 4 to connect with the bottom of the suppression plate. The vertical close contact will not produce lateral movement and friction, replacing the existing contacts connected at the bottom of the suppression plate, so it will not cause the contact of the weighing mechanism to wear excessively. In addition, the steel ball 11 assembled at the bottom of the action rod 5 and the upper plane of the side frame have a gap when the vehicle is empty, and will not contact to generate friction. When the vehicle is loaded, although there is contact, a rolling friction contact method with very small friction is adopted, which avoids the occurrence of sliding friction wear excessively. It solves the problem that when the vehicle is loaded with cargo, the spring at the rocker is compressed, causing the contact of the weighing mechanism to be in close contact with the cross-beam contact plate. In particular, when the vehicle is running, the cross-beam continuously swings relative to the vehicle body with the bogie, causing the contact of the weighing mechanism and the cross-beam contact plate to move continuously in the horizontal direction, which will cause the contact excessive wear. It also solves the problem that the weighing mechanism has low maintenance efficiency and high cost because the contact wear of the weighing mechanism is greater than 3mm and must be replaced with a new one.

[0094] Since all the parts and components of the present invention, such as the brake cylinder, auxiliary reservoir, 120 valve, reducing reservoir, pressure limiting valve, etc., are installed on the underframe floor of the railway freight car body, and in the present invention, the sensing valve and the suppression disc are directly installed on the integrated mounting base on the vehicle underframe floor and integrally installed with the connecting pipelines of the reducing reservoir, pressure limiting valve and brake cylinder, the weighing mechanism of the present invention cancels the branch pipelines connected to the connecting pipelines of the reducing reservoir, pressure limiting valve and brake cylinder, reduces the air propagation time in the pipelines, improves the sensitivity of the brake valve, shortens the action time of the brake cylinder, is easy to manufacture and detect, simplifies the manufacturing process, and is easy to ensure the assembly dimensions and quality; the weighing mechanism of the present invention is more convenient for connection operation on the vehicle. It solves the problems that the two branch pipes connecting the weighing mechanism installed under the center sill of the existing car body with the reducing reservoir, pressure limiting valve and brake cylinder installed above the underframe have too long branch pipes, too many bending places, and it is not easy to manufacture and detect the three-dimensional bends, increases the air propagation time in the pipelines, affects the sensitivity of the brake valve, prolongs the action time of the brake cylinder, has a complex manufacturing process, is not easy to ensure the dimensions and quality, is easy to get stuck during assembly, such as leakage will occur when forcefully assembling, and it is inconvenient to install due to the narrow space under the vehicle when connecting the branch pipe with the weighing mechanism.

[0095] The present invention uses the steel balls arranged at the lower part of the actuating rod to contact and transmit the acting force with the upper plane in the middle of the side frame to replace the crossbeam structure of the existing car, which solves the problems of the existing car's crossbeam having a long force arm, poor stiffness, large bending moment and unfavorable stress, and at the same time solves the problem that after the middle part of the crossbeam and its contact plate are deformed, the gap between the weighing mechanism contact head and the crossbeam contact plate does not meet the requirements, which affects the weighing effect and further affects the braking performance of the vehicle.

[0096] During the new manufacture and maintenance of the vehicle, since the present invention cancels the crossbeam structure arranged on the existing vehicle bogie, it will not affect the interchangeability of the bogie parts and components installed on the vehicle, improves the assembly, maintenance efficiency and quality of the bogie, can reduce the number of spare parts in stock, and improves the driving safety performance of the vehicle. The present invention solves the problems that the symmetrically added welded crossbeam brackets at the corresponding positions on the inner sides of the two side frames of the existing car bogie affect the interchangeability of the side frames during bogie maintenance, affect the maintenance efficiency and quality of the bogie, and at the same time also solves the problems of the existing crossbeam installed on the vehicle bogie having complex assembly and maintenance processes, difficult quality assurance, low efficiency, high cost and causing driving safety, etc.

[0097] Since the existing car has to weld crossbeam brackets at the corresponding positions on the inner sides of the two side frames of the bogie close to the weighing mechanism, which affects the interchangeability of the side frames of the bogie and reduces the assembly and maintenance efficiency and quality; while the mechanism of the present invention replaces the crossbeam structure of the existing car, and no accessories need to be welded on the side frames and other accessories of the bogie during assembly and maintenance, enabling the interchangeability of the side frames and other bogie accessories of each vehicle, and improving the assembly, maintenance efficiency and quality of the bogie.

[0098] The weighing mechanism mounting seat of the present invention adopts an integral integrated structure and is assembled above the floor of the underframe, with good processing and assembly technology, easy to ensure the assembly dimensions and quality, and good safety. It solves the problem that due to space limitations, the weighing mechanism of the existing vehicle is installed on two symmetrically arranged mounting seats above the cross beam and below the center beam of the underframe. When there are large errors in processing the bolt connection holes and assembling and welding with the center beam, it is easy to cause difficulty in aligning the weighing mechanism with the bolt connection holes on the mounting seat, and there are problems such as the need for repair and the easy loosening of bolts during vehicle operation, which may lead to the detachment of the weighing mechanism and affect the driving safety.

[0099] After assembly, the present invention shortens the distance between the weighing mechanism and the main braking accessories such as the 120 valve, cancels the branch pipe connecting the weighing mechanism and the accessories such as the 120 valve, shortens the air wave conduction time, can improve the braking sensitivity, and compared with the existing vehicle, the device reduces the number of connection points of each air circuit, correspondingly reduces the leakage probability of each connection point, so improves the sealing performance of the air braking system.

[0100] The air circuit holes of the sensing valve of the present invention are directly connected to the integrated mounting seat by two sealing rings and bolts, reducing the number of interfaces and fasteners, which can reduce the leakage probability and improve the assembly efficiency of the sensing valve; the present invention adopts a suppression disc support seat with a simple structure of group welding, which can reduce the environmental pollution during the processing process, improve the processing efficiency and reduce the cost, and solves the problems of large environmental pollution, low efficiency and high cost in casting and processing of the existing bracket.

[0101] The weighing mechanism of the railway freight car of the present invention has a large self-adjustment range, does not require electric welding operation during assembly adjustment, and is convenient to adjust. After the vehicle wheels are worn, there is enough adjustment amount to replace the existing adjustment pads, contacts and cross beam support pads and other structures that are not easy to adjust. And during the adjustment process, by adopting any one or a combination of the connection hole positions of the round pins at the lower part of the adjustment connecting rod and the thread length of the upper part of the connecting rod connected to the lower part of the suppression disc, the adjustment requirements can be met, avoiding the problem of welding defects when welding adjustment pads on the cross beam contact plate during the adjustment of the existing weighing mechanism, and solving the problems of large welding workload, difficult to ensure welding quality, high labor intensity and large environmental pollution when adding adjustment pads on the cross beam contact plate during the overhaul of the existing vehicle. At the same time, it also solves the problem that when the ground wire is not properly handled during the electric welding of the adjustment pad on the cross beam contact plate of the existing vehicle, pitting corrosion may occur to the bogie bearing due to the passing of current, which affects the driving safety.

[0102] When the vehicle of the present invention loads goods, the steel balls provided at the lower part of the action rod can roll relative to the upper plane of the side frame of the corresponding bogie, which can reduce the frictional resistance, improve the force-bearing of the action rod and avoid deformation. Moreover, the action rod is directly above the longitudinal center line of the upper plane of the side frame, so that the steel balls always contact the upper plane near the center of the side frame at this place whether the vehicle is running on a straight or curved track when loading goods, and can roll relative to the upper plane of the side frame at this place. This invention can adapt to the bow-shaped structure with a small section of plane provided at the longitudinal center of the upper surface of the railway freight car side frame and inclined structures at both ends, which can ensure that when the vehicle loading goods passes through a straight or curved track, the steel balls provided at the lower part of the action rod always act on the upper plane in the middle of the side frame and will not slide onto the inclined planes at both ends of the side frame, ensuring the accurate reference clearance between the pulley and the upper plane of the side frame and not affecting the occurrence of normal braking force.

[0103] The limit seat 7 of the present invention is assembled on the web plate below the bolster beam which is relatively close to the upper plane of the side frame. By restricting the movement or swing of the lower part of the cantilever of the support bracket 6, it is ensured that the action rod 5 passing through the center of the support bracket can move up and down flexibly.

[0104] The device of the present invention is simple in assembly, disassembly and adjustment, high in efficiency, good in safety, low in manufacturing and maintenance costs, and solves the problems of difficult under-vehicle adjustment, complex adjustment process, low efficiency, poor safety, high manufacturing and maintenance costs of the existing vehicle weighing mechanism.

[0105] The device of this invention is arranged on the floor of the underframe, which is convenient for manufacturing and maintenance, has sufficient strength and stiffness, high reliability, meets the requirements of anti-loosening, anti-dropping and protection, and does not affect the assembly and maintenance of other components.

[0106] This device has good force-bearing structure, high strength and large stiffness, and has the characteristics of long service life, light self-weight, convenient assembly and positioning, and good economy.

[0107] The disassembly and assembly tools of this invention device are easy to carry, meet the requirements of no large tools for operation in the wild, and are convenient for manufacturing, maintenance and inspection, and meet the requirements of high reliability and high safety.

[0108] The main accessories of this device are processed from high-strength and corrosion-resistant steel plates, which have certain strength and stiffness, high reliability, are convenient for batch manufacturing, and all the movable accessories of this device are made of materials with good corrosion resistance and wear resistance, have a high reuse rate during maintenance, can effectively reduce the procurement and transportation costs, are beneficial to improving the assembly quality, and save the manufacturing costs.

[0109] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A weighing mechanism integrated into a railway freight car, characterized in that: include: An integrated mounting seat (2), the integrated mounting seat (2) being arranged on a base frame (11b), the integrated mounting seat (2) comprising a seat body (2.1) and a suppression disk support seat (3), the seat body (2.1) being a plate-shaped structure, and having a plurality of air passages and air through holes arranged therein, corresponding to a main valve, an emergency valve, a pressure limiting valve, a pressure reducing air cylinder, an acceleration relief air cylinder, an auxiliary air cylinder and a main pipe respectively, the suppression disk support seat (3) being arranged on a side wall of the seat body (2.1) and being used for vertically connecting to a weight measuring mechanism (2b); an action rod (5), the action rod (5) being arranged on the center line of the bolster (11.2b) of the base frame (11b), the upper end of the action rod (5) being connected to the contact end of the suppression disk (2.1b) via a length adjustment mechanism, and the lower end of the action rod (5) being provided with a ball mechanism; A bracket (6), the bracket (6) being arranged on the center line of the bolster (11.2b), the ball bearing mechanism passing through the bracket (6) being slidably connected or intermittently connected to the side frame (14.3b); The length adjustment mechanism comprises: A connecting rod (4), one end of the connecting rod (4) being provided with an axial threaded hole, the outer periphery of the threaded hole being provided with an axial oblong hole (4.3), a contact end of the suppression disk (2.1b) being provided with a screw rod, the screw rod being provided with a through hole matching the oblong hole (4.3), and a first round pin being inserted into the oblong hole (4.3) and the through hole; The other end of the connecting rod is provided with an inner circular hole (4.4), the side wall of the inner circular hole is provided with a plurality of first pin holes (4.5), and the upper end of the action rod (5) is provided with a second pin hole (5.2) matching with the first pin hole (4.5).

2. The weighing mechanism integrated into a railway freight car according to claim 1, characterized in that: The suppression disk support seat (3) comprises: A support (3.2), the support (3.2) is cylindrical, and two oil storage grooves (3.2.3) are arranged at intervals on the inner wall, a connecting groove is arranged between the two oil storage grooves (3.2.3), and sealing ring installation grooves (3.2.2) are arranged at intervals on both sides of the two oil storage grooves (3.2.3); An oil cup (3.2.5), the oil cup (3.2.5) being arranged obliquely on the outer periphery of the support (3.2) and being connected to the oil storage tank (3.2.3); A left mounting plate (3.1) and a right mounting plate (3.3), wherein the left mounting plate (3.1) and the right mounting plate (3.3) are symmetrically arranged on both sides of the support (3.2), and the left mounting plate (3.1) and the right mounting plate (3.3) are respectively in a Z shape and are used to be connected to the seat body (2.1).

3. The weighing mechanism integrated with a railway freight car according to claim 2, characterized in that: The weighing mechanism (2b) comprises: A suppression disk (2.1b), the suppression disk (2.1b) comprising a smooth rod portion, a disk portion being provided at one end of the smooth rod portion, the screw being provided at the other end of the smooth rod portion, the screw being connected to the connecting rod (4), and a disc pad (2.2b) being provided between the disc portion and the suppression disk support seat (3); A second bolt hole (2.2), an air path hole (2.4) and a first bolt hole (2.3) are horizontally arranged on a side wall of the seat body (2.1); the second bolt hole (2.2) is used to connect with the suppression disk support seat (3); the air path hole (2.4) and the first bolt hole (2.2) are used to install a sensing valve (2.6b); a touch rod of the sensing valve (2.6b) is arranged upward and is located directly below the disk portion; a dust cover (2.3b) is arranged on the touch rod.

4. The weighing mechanism integrated with a railway freight car according to claim 3, characterized in that: It also includes a return spring (2.7b), the lower end of the support (3.2) is provided with a countersunk hole (3.2.4), the return spring (2.7b) is sleeved on the bare rod portion of the suppression disk (2.1b), and one end of the return spring (2.7b) is arranged in the countersunk hole (3.2.4); A spring seat (2.8b) is provided at one end of the smooth rod portion of the suppression disk (2.1b) close to the screw rod, and the other end of the return spring (2.7b) is connected to the spring seat (2.8b).

5. The weighing mechanism integrated with a railway freight car according to claim 1, characterized in that: The ball mechanism comprises: A return spring seat (9), the return spring seat (9) being arranged on the outer periphery of the action rod (5); A positioning nut (10), one end of which is rollingly connected to a ball (11) via a tapered hole (10.4), and the other end of which is connected to the actuating rod (5); A return spring (8), wherein the return spring (8) is sleeved on the action rod (5) and is located between the return spring seat (9) and the bracket (6).

6. The weighing mechanism integrated with a railway freight car according to claim 5, characterized in that: The action rod (5) is provided with a third round pin first mounting hole (5.4), and the positioning nut (10) is provided with a third round pin second mounting hole (10.2).

7. The weighing mechanism integrated into a railway freight car according to claim 1, characterized in that: When the vehicle is empty, a gap h1 is provided between the ball mechanism and the side frame (14.3b).

8. The weighing mechanism integrated into a railway freight car according to claim 1, characterized in that: The bracket (6) comprises a guide cylinder (6.1), the outer periphery of the guide cylinder (6.1) is provided with a mounting seat (6.2) connected to the bolster (11.2b), and the guide cylinder (6.1) is provided with a lubricating oil cup and a lubricating oil groove.

9. The weighing mechanism integrated into a railway freight car according to claim 1, characterized in that: The suppression disk (2.1b), the action rod (5) and the connecting rod (4) are coaxially arranged.

10. A railway freight car, characterized in that: It comprises a weighing mechanism integrated into a railway freight car according to any one of claims 1-9.

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