CN217505217U - Railway ballast loading and unloading test device - Google Patents
Railway ballast loading and unloading test device Download PDFInfo
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- CN217505217U CN217505217U CN202220598047.2U CN202220598047U CN217505217U CN 217505217 U CN217505217 U CN 217505217U CN 202220598047 U CN202220598047 U CN 202220598047U CN 217505217 U CN217505217 U CN 217505217U
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Abstract
The utility model discloses a railway ballast loading and unloading test device relates to railway hopper car test equipment field, include: the framework comprises a supporting platform and supporting legs; the hopper mechanism is connected with the supporting platform, the distance from the upper edge of the hopper mechanism to the ground is not more than 2m, and the bottom of the hopper mechanism is movably provided with a bottom door; the driving mechanism is arranged on one side of the funnel mechanism and is connected with the bottom door through a transmission mechanism, and the driving mechanism can drive the bottom door to realize the opening and closing of the bottom of the funnel mechanism; the control mechanism is connected with the driving mechanism; the funnel mechanism of the testing device is arranged on the supporting platform, so that the upper edge of the funnel mechanism is less than 2m from the ground, the transportation of stone ballasts is facilitated, the opening and closing of a bottom door are achieved through the control mechanism, the process of loading and unloading the stone ballasts by the hopper car is simulated, an easily-realized test verification platform is provided for the loading and unloading service function research of the stone ballast hopper car, the destructiveness of the vehicle is avoided, and the test cost is effectively controlled.
Description
Technical Field
The utility model belongs to railway hopper car test equipment field, more specifically relates to a railway ballast loading and unloading test device.
Background
At present, the railway ballast hopper car for domestic and foreign railways is mainly used for paving or supplementing ballasts on new and old railway lines, the ballast unloading system of the car mainly adopts a pneumatic mechanical transmission device, the quality of a ballast unloading function of the car determines the working efficiency of paving or supplementing ballasts of relevant departments of railways, the loading and unloading research on the railway ballast hopper car is generally carried out by utilizing the ballast hopper car returned to the factory for carrying out ballast loading and unloading and bottom door opening and closing tests, vehicles returned to the factory for maintenance have a certain maintenance period, the verification time of the ballast test cannot be fully met in many times, the height of the uppermost edge of the side wall of the existing hopper car is nearly 4 meters from the rail surface when the existing side wall of the hopper car is empty, the ballast loading and unloading tests need to be carried out on rails and factories with high cars, the test sites where the ballast loading and unloading are generally difficult to find when the tasks of the existing hopper car are frequent, the existing ballast car has high requirements on sites and the loading and unloading of the cars are inconvenient to transport, and the vehicle is more damaged after being recovered after some small reconstruction is carried out on the existing vehicle, and the recovery cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough that prior art exists, a railway stone tiny fragments of stone, coal, etc. loading and unloading test device is provided, this test device's funnel mechanism sets up on supporting platform, make going up of funnel mechanism along being less than 2m apart from ground level, the transportation of the stone tiny fragments of stone, coal, etc. of being convenient for comes the switching of bottom door through control mechanism, the process of simulation hopper car loading and unloading stone tiny fragments of stone, coal, etc. loading and unloading function research to stone tiny fragments of stone, coal, etc. provides the experimental verification platform of easily realizing, avoid the destructiveness to the vehicle, effective control test cost.
In order to achieve the above object, the utility model provides a railway ballast loading and unloading test device, include:
the framework comprises a supporting platform and supporting legs;
the hopper mechanism is connected with the supporting platform, the distance from the upper edge of the hopper mechanism to the ground is not more than 2m, and the bottom of the hopper mechanism is movably provided with a bottom door;
the driving mechanism is arranged on one side of the funnel mechanism and is connected with the bottom door through a transmission mechanism, and the driving mechanism can drive the bottom door to realize the opening and closing of the bottom of the funnel mechanism;
and the control mechanism is connected with the driving mechanism.
Optionally, the supporting platform comprises two longitudinal beams and two cross beams arranged between the two longitudinal beams, the two cross beams and the two longitudinal beams form a square-shaped structure, the lower end of the funnel mechanism penetrates through the square-shaped structure, and the upper end of the funnel mechanism is clamped on the two cross beams and the two longitudinal beams.
Optionally, the funnel mechanism comprises:
two side plates;
the two end plates are arranged between the two side plates, the top parts of the side plates and the top parts of the end plates are flush, and the two side plates and the two end plates surround a straight pipe area of the funnel mechanism;
the two inclined plates are arranged in an inverted splayed shape, the tops of the inclined plates are connected with the bottoms of the end plates, and the inclined plates and the two side plates surround a conical surface area of the funnel mechanism.
Optionally, the funnel mechanism still includes the guide plate, the guide plate with one the bottom of swash plate is connected, the both ends of end door respectively with the guide plate with another the swash plate is laminated mutually.
Optionally, one side of the side plates, which is close to each other, is connected with one side of the bottom door through a first transmission rod, and the cross section of the bottom door is in an arc shape protruding towards the guide plate.
Optionally, the transmission mechanism comprises:
the upper transmission shaft is arranged on the supporting platform and is hinged with an output shaft of the driving mechanism through a second transmission rod;
the lower transmission shaft is arranged below the supporting platform, one end of the lower transmission shaft is connected with the upper transmission shaft through a side pull rod, and the lower transmission shaft is hinged with one end of the bottom door through a third transmission rod.
Optionally, a ballast separating plate is arranged inside the funnel mechanism, and two ends of the ballast separating plate are connected with the two side plates.
Optionally, the control mechanism comprises:
the control valve is arranged on the supporting platform and is provided with an air inlet and two air outlets;
one end of each of the door opening pipeline and the door closing pipeline is connected with the two air outlets, and the other end of each of the door opening pipeline and the door closing pipeline is connected with a first air inlet and a second air inlet which are respectively arranged at two ends of the driving mechanism.
Optionally, the bottom of the support leg is provided with a pulley.
Optionally, the volume of the funnel mechanism is not less than 3m 3 。
The utility model provides a railway tiny fragments of stone, coal, etc. loading and unloading test device, its beneficial effect lies in:
1. the test device is light in overall weight, small in occupied space and convenient to transport, has low requirements on a test site, and only needs to harden and flatten the site;
2. the testing device provides a verification basis for the new technology application popularization and optimization improvement of the ballast unloading system of the ballast hopper car, and saves the operation time and the manufacturing cost for the transformation of the existing ballast hopper car;
3. the testing device can be manufactured by adopting the leftover materials of the railway hopper car on site, and has low manufacturing cost and easy maintenance;
4. the testing device has the function of loading and unloading the ballast on the ballast hopper car, can simulate the process of loading and unloading the ballast by the hopper car, and solves the problem that the ballast can be loaded and unloaded without the car due to the testing requirement;
5. the simulation test implemented on the test device provides a certain theoretical support for the function improvement and optimization improvement of the existing stone ballast hopper cars and the new generation stone ballast hopper cars.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic structural diagram of a railway ballast loading and unloading test device according to an embodiment of the present invention.
Fig. 2 shows a schematic structural diagram ii of a railway ballast loading and unloading test device according to an embodiment of the present invention.
Figure 3 shows a schematic cross-sectional view along a-a of figure 2 with the test apparatus in the closed position of the bottom door.
Fig. 4 outputs a schematic sectional view of fig. 2 along section a-a when the testing device is in a state where the bottom door is opened.
Description of reference numerals:
1. a support platform; 2. a hopper mechanism; 3. a bottom door; 4. a drive mechanism; 5. a side plate; 6. an end plate; 7. a sloping plate; 8. a baffle; 9. a first drive lever; 10. an upper transmission shaft; 11. a second transmission rod; 12. a lower transmission shaft; 13. a side pull rod; 14. a third transmission rod; 15. dividing the ballast plate; 16. a control valve; 17. opening a door of the pipeline; 18. a door closing pipeline; 19. and (7) supporting legs.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides a railway ballast loading and unloading test device, include:
the framework comprises a supporting platform and supporting legs;
the hopper mechanism is connected with the supporting platform, the distance from the upper edge of the hopper mechanism to the ground is not more than 2m, and the bottom of the hopper mechanism is movably provided with a bottom door;
the driving mechanism is arranged on one side of the funnel mechanism and is connected with the bottom door through a transmission mechanism, and the driving mechanism can drive the bottom door to realize the opening and closing of the bottom of the funnel mechanism;
and the control mechanism is connected with the driving mechanism.
Specifically, the funnel mechanism and the control mechanism are arranged on the framework of the testing device, the control mechanism controls the driving mechanism to operate, so that the transmission mechanism drives the bottom door to realize opening and closing movement, the ballast unloading process of the ballast hopper car is simulated, various test data are collected, and theoretical support is provided for development, optimization and improvement of a new generation of ballast hopper cars; supporting platform makes the last edge of funnel mechanism be not more than 2m apart from ground, can adopt ordinary forklift to load the tiny fragments of stone, coal, etc. like this, transport convenient and fast to can install additional on this test device and reform transform according to experimental demand, need not to destroy current hopper car, effective control test cost, this test device can satisfy the simulation check verification of new technologies such as tiny fragments of stone, coal, etc. hopper car unloads tiny fragments of stone, coal, etc. flow control, bottom door aperture.
Optionally, the support platform comprises two longitudinal beams and two cross beams arranged between the two longitudinal beams, the two cross beams and the two longitudinal beams form a square structure, the lower end of the funnel mechanism penetrates through the square structure, and the upper end of the funnel mechanism is clamped on the two cross beams and the two longitudinal beams.
The utility model discloses a ballast hopper car bottom door, including hopper mechanism, back door, the supporting platform has longeron and crossbeam to surround and form, hopper mechanism joint is on supporting platform, guarantee that stone tiny fragments can realize the analogue test of normally loading and unloading tiny fragments at hopper mechanism, this test device's bottom door size keeps unanimous with stone tiny fragments hopper car bottom door size like this, install additional on the device promptly and reform transform conveniently and easy to implement, the transformation scheme is through verifying that can directly promote on stone tiny fragments hopper car bottom door after ripe reliable, need not do the size transform, for the perfect transformation of present car saves operating time and transformation cost.
Optionally, the funnel mechanism comprises:
two side plates;
the two end plates are arranged between the two side plates, the top parts of the side plates and the top parts of the end plates are flush, and the two side plates and the two end plates surround a straight pipe area of the funnel mechanism;
the funnel mechanism comprises two inclined plates, wherein the two inclined plates are arranged in an inverted splayed shape, the tops of the inclined plates are connected with the bottoms of end plates, and the inclined plates and the two side plates form a conical surface area of the funnel mechanism in a surrounding mode.
Specifically, the funnel mechanism comprises a straight pipe area at the upper part and a conical area at the lower part, the upper part of the side plate and the end plate surround the straight pipe area, the upper part of the straight pipe area is flush, and the distance between the upper edge of the straight pipe area and the ground is controlled, so that a common forklift can finish the ballast loading process; the funnel mechanism is the same as the ballast loading hopper car in structure, so that the whole process of loading and unloading ballasts can be simulated through the test device, and more real test data can be obtained.
Optionally, the funnel mechanism further comprises a guide plate, the guide plate is connected with the bottom of one inclined plate, and two ends of the bottom door are respectively attached to the guide plate and the other inclined plate.
Specifically, a guide plate is arranged at the bottom of the conical surface area, the width of the guide plate is the same as that of one inclined plane, stone ballasts in the funnel mechanism are drained through the guide plate in a drainage mode, and in order to realize plugging of the stone ballasts by a bottom door and control of ballast discharge flow, the bottom door is attached to the other inclined plate and the guide plate; if the opening degree of the bottom door or the control of the ballast discharge flow is required to be simulated, the moving position of the bottom door is only required to be controlled by the driving mechanism, the operation is convenient, and the test cost is effectively controlled.
Optionally, the side plates close to each other are connected to one side of a bottom door through a first transmission rod, and the cross section of the bottom door is in the shape of an arc protruding towards the guide plate.
Specifically, the first transmission rod is Y-shaped, one end of the first transmission rod is provided with a connecting end and is hinged with the inner sides of the side plates, the inner sides of the two side plates are respectively hinged with the first transmission rod, and the other end of the first transmission rod is provided with two connecting ends and is connected with the two ends of the bottom door close to the two side plates; under drive mechanism's drive like this, first drive rod is driven and is used the pin joint of its one end as the centre of a circle, carry out anticlockwise rotation and make bottom door and guide plate separately, thereby realize opening of funnel mechanism bottom, otherwise, when first drive rod is driven and is used the pin joint of its one end as the centre of a circle and carry out clockwise rotation, make the bottom door fall on the guide plate, the bottom door closes funnel mechanism bottom like this, at this moment the stone tiny fragments of stone fragments of.
Optionally, the transmission mechanism comprises:
the upper transmission shaft is arranged above the framework and is hinged with an output shaft of the driving mechanism through a second transmission rod;
the lower transmission shaft is arranged below the framework, one end of the lower transmission shaft is connected with the upper transmission shaft through a side pull rod, and the lower transmission shaft is hinged to one end of the bottom door through a third transmission rod.
The transmission mechanism comprises an upper transmission shaft and a lower transmission shaft, the upper transmission shaft and the lower transmission shaft are arranged along the length direction of the funnel mechanism and are respectively arranged in a straight tube area of the funnel mechanism and the side surface of a conical surface area of the funnel mechanism, the two transmission shafts are hinged and connected through a side pull rod, linkage is realized under the action of the driving mechanism, the rotation directions of the upper transmission shaft and the lower transmission shaft are opposite, the output end of the driving mechanism can only reciprocate horizontally, when the output end extends out, the second transmission rod drives the upper transmission shaft to rotate anticlockwise, so that the side pull rod is lifted upwards, the lower transmission shaft is driven to rotate clockwise, and a third transmission rod is arranged between the lower transmission shaft and one end, far away from the guide plate, of the bottom door, so that the bottom door can be driven to open the funnel mechanism when the driving mechanism extends out, and the ballast unloading process is completed; on the contrary, when the output end retracts, the second transmission rod enables the side pull rod to be lowered downwards, the lower transmission rod is driven to rotate anticlockwise, the bottom door moves towards the guide plate until the bottom door presses the guide plate, the closing of the funnel mechanism is achieved, the transmission mechanism is simple in arrangement, force transmission is stable, and the manufacturing cost of the testing device is reduced.
Optionally, a ballast separating plate is arranged inside the funnel mechanism, and two ends of the ballast separating plate are connected with the two side plates.
Specifically, a ballast distributing plate is arranged in the funnel mechanism to separate the ballasts, so that the ballast is prevented from being too much collected at the lower end of the funnel mechanism in the ballast unloading process to cause ballast unloading blockage of the funnel mechanism.
Optionally, the control mechanism comprises:
the control valve is arranged on the framework and is provided with an air inlet and two air outlets;
one end of the door opening pipeline and one end of the door closing pipeline are respectively connected with the two air outlets, and the other end of the door opening pipeline and the other end of the door closing pipeline are respectively connected with a first air inlet and a second air inlet which are respectively arranged at two ends of the driving mechanism.
Specifically, the driving mechanism can adopt a bidirectional cylinder, the air inlet is switched to be communicated with one of the two air outlets through the control valve, the ventilation of a door opening pipeline or a door closing pipeline is realized, the output end of the bidirectional cylinder stretches out or retracts, the bottom door is driven to be opened and closed, the ballast loading and unloading process of the ballast hopper car is simulated, the ventilation volume of the door opening pipeline and the door closing pipeline can be controlled through the control valve, and the control of the ballast unloading flow and the bottom door opening degree is met.
In one embodiment, the door opening pipeline and the door closing pipeline are made of steel pipes or rubber pipes, so that the ventilation of the bidirectional piston is ensured to realize the switching function of opening and closing the bottom door, and the manufacturing cost of the test device can be reduced.
Optionally, the bottom of the leg is provided with a pulley.
Specifically, the bottom of the supporting leg is provided with the pulley, so that the testing device can move flexibly, the testing field cannot be limited, and the testing process of loading and unloading ballasts can be realized only by hardening the smooth field.
Optionally, the volume of the funnel mechanism is not less than 3m 3 。
Specifically, the volume of this funnel mechanism sets up to be not less than 3 cubes, just so can hold the railway about 5 tons with the stone tiny fragments of stone, coal powder, etc. flow more than enough bottom door switch 15 times during analogue test, reduced the forklift and loaded tiny fragments of stone, coal powder, etc. frequently, improved analogue test work efficiency.
Examples
As shown in fig. 1 to 4, the utility model provides a railway ballast loading and unloading test device, include:
a framework comprising a support platform 1 and legs 19;
the funnel mechanism 2 is connected with the supporting platform 1, the distance from the upper edge of the funnel mechanism 2 to the ground is not more than 2m, and the bottom of the funnel mechanism 2 is movably provided with a bottom door 3;
the driving mechanism 4 is arranged on one side of the funnel mechanism 2, the driving mechanism 4 is connected with the bottom door 3 through a transmission mechanism, and the driving mechanism 4 can drive the bottom door 3 to realize the opening and closing of the bottom of the funnel mechanism 2;
and a control mechanism connected to the drive mechanism 4.
In this embodiment, supporting platform 1 includes two longerons and sets up two crossbeams between two longerons, and two crossbeams and two longerons form a mouthful font structure, and the lower extreme of funnel mechanism 2 passes a mouthful font structure, and the upper end joint of funnel mechanism 2 is on two crossbeams and two longerons.
In the present embodiment, the hopper mechanism 2 includes:
two side plates 5;
the two end plates 6 are arranged between the two side plates 5, the top parts of the side plates 5 and the top parts of the end plates 6 are flush, and the two side plates 5 and the two end plates 6 surround a straight pipe area of the funnel mechanism;
two swash plates 7, two swash plates 7 are the setting of falling the splayed, and the top of swash plate 7 is connected with the bottom of end plate 6, and the conical surface district of funnel mechanism is enclosed into with two curb plates 5 to swash plate 7.
In this embodiment, the funnel mechanism 2 further comprises a guide plate 8, the guide plate 8 is connected with the bottom of one inclined plate 7, and two ends of the bottom door 3 are respectively attached to the guide plate 8 and the other inclined plate 7.
In this embodiment, the side plates 5 are connected to one side of the bottom door 3 through a first driving rod 9, and the cross section of the bottom door 3 is formed in an arc shape protruding toward the guide plate 8.
In this embodiment, the transmission mechanism includes:
the upper transmission shaft 10 is arranged on the supporting platform 1, and the upper transmission shaft 10 is hinged with an output shaft of the driving mechanism 4 through a second transmission rod 11;
the lower transmission shaft 12 is arranged below the supporting platform 1, one end of the lower transmission shaft 12 is connected with the upper transmission shaft 10 through a side pull rod 13, and the lower transmission shaft 12 is hinged with one end of the bottom door 3 through a third transmission rod 14.
In this embodiment, the funnel mechanism 2 is provided with a ballast separating plate 15 inside, and two ends of the ballast separating plate 15 are connected with the two side plates 5.
In this embodiment, the control mechanism includes:
the control valve 16 is arranged on the supporting platform, and the control valve 16 is provided with an air inlet and two air outlets;
one end of the door opening pipeline 17 and one end of the door closing pipeline 18 are respectively connected with the two air outlets, and the other end of the door opening pipeline 17 and the other end of the door closing pipeline 18 are respectively connected with a first air inlet and a second air inlet which are respectively arranged at two ends of the driving mechanism 4.
In this embodiment, the bottom of the leg 19 is provided with a pulley.
In the present embodiment, the volume of the hopper means 2 is not less than 3m 3 。
In summary, in order to achieve sufficient air source pressure when the bottom door is opened, the test device can firstly charge compressed air into the air storage cylinder, an air outlet of the air storage cylinder is connected with an air inlet access port of the control mechanism, when the air pressure of the air storage cylinder reaches above 300KPa, the control valve 16 is pulled to a door opening position from a neutral position along the clockwise direction, at the moment, the air pressure of the air storage cylinder enters the bidirectional cylinder along the rear end of the bidirectional cylinder, and the output end of the bidirectional cylinder is pushed out to sequentially drive each component of the transmission mechanism to open the bottom door 3 for ballast discharging; when the bottom door 3 needs to be closed, the control valve 16 is pulled to a door closing position from the door opening position along the anticlockwise direction, then air pressure of the air storage cylinder is filled into the bidirectional cylinder along the front end of the bidirectional cylinder, the output end of the bidirectional cylinder is pushed to reset, all parts of the transmission system mechanism are driven to close the bottom door 3 in the pushing-back process, the action response of the whole opening and closing process of the bottom door 3 is rapid, and time and labor are saved.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and 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 (10)
1. The utility model provides a railway ballast loading and unloading test device which characterized in that includes:
the framework comprises a supporting platform and supporting legs;
the hopper mechanism is connected with the supporting platform, the distance from the upper edge of the hopper mechanism to the ground is not more than 2m, and the bottom of the hopper mechanism is movably provided with a bottom door;
the driving mechanism is arranged on one side of the hopper mechanism and is connected with the bottom door through a transmission mechanism, and the driving mechanism can drive the bottom door to realize the opening and closing of the bottom of the hopper mechanism;
and the control mechanism is connected with the driving mechanism.
2. The railway ballast loading and unloading test device of claim 1, wherein the support platform comprises two longitudinal beams and two cross beams arranged between the two longitudinal beams, the two cross beams and the two longitudinal beams form a square-shaped structure, the lower end of the funnel mechanism penetrates through the square-shaped structure, and the upper end of the funnel mechanism is clamped on the two cross beams and the two longitudinal beams.
3. The railway ballast handling test apparatus of claim 1, wherein the hopper mechanism comprises:
two side plates;
the two end plates are arranged between the two side plates, the top parts of the side plates and the top parts of the end plates are flush, and the two side plates and the two end plates surround a straight pipe area of the funnel mechanism;
the two inclined plates are arranged in an inverted splayed shape, the tops of the inclined plates are connected with the bottoms of the end plates, and the inclined plates and the two side plates surround a conical surface area of the funnel mechanism.
4. The railway ballast loading and unloading test device according to claim 3, wherein the funnel mechanism further comprises a guide plate, the guide plate is connected with the bottom of one of the inclined plates, and two ends of the bottom door are respectively attached to the guide plate and the other inclined plate.
5. The railway ballast loading and unloading test device according to claim 4, wherein one side of the side plates, which is close to each other, is connected with one side of the bottom door through a first transmission rod, and the cross section of the bottom door is in the shape of an arc protruding towards the guide plate.
6. The railway ballast handling test apparatus of claim 5, wherein the transmission mechanism comprises:
the upper transmission shaft is arranged on the supporting platform and is hinged with an output shaft of the driving mechanism through a second transmission rod;
the lower transmission shaft is arranged below the supporting platform, one end of the lower transmission shaft is connected with the upper transmission shaft through a side pull rod, and the lower transmission shaft is hinged with one end of the bottom door through a third transmission rod.
7. The railway ballast loading and unloading test device according to claim 3, wherein a ballast distributing plate is arranged inside the funnel mechanism, and two ends of the ballast distributing plate are connected with the two side plates.
8. The railway ballast handling test apparatus of claim 1, wherein the control mechanism comprises:
the control valve is arranged on the supporting platform and is provided with an air inlet and two air outlets;
one end of each of the door opening pipeline and the door closing pipeline is connected with the two gas outlets, and the other end of each of the door opening pipeline and the door closing pipeline is connected with the first gas inlet and the second gas inlet which are respectively arranged at the two ends of the driving mechanism.
9. The railway ballast loading and unloading test device of claim 1, wherein pulleys are arranged at the bottoms of the supporting legs.
10. The railway ballast loading and unloading test device of claim 1, wherein the volume of the hopper mechanism is not less than 3m 3 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220598047.2U CN217505217U (en) | 2022-03-18 | 2022-03-18 | Railway ballast loading and unloading test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220598047.2U CN217505217U (en) | 2022-03-18 | 2022-03-18 | Railway ballast loading and unloading test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217505217U true CN217505217U (en) | 2022-09-27 |
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ID=83348570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220598047.2U Active CN217505217U (en) | 2022-03-18 | 2022-03-18 | Railway ballast loading and unloading test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217505217U (en) |
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2022
- 2022-03-18 CN CN202220598047.2U patent/CN217505217U/en active Active
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