Externally-hung car dumper car pressing compensation system

Abstract

The utility model relates to an externally-hung car dumper car pressing compensation system which comprises a hydraulic oil cylinder and a compensation device hung outside the hydraulic oil cylinder. A cylinder body of the hydraulic oil cylinder internally comprises a rod cavity in the upper portion and a rodless cavity in the lower portion. An oil port is formed in the upper portion of the rod cavity, an oil path block is installed at the oil port of the rod cavity in the hydraulic oil cylinder, and a compensation device is fixed to the outer side wall, adjacent to the oil path block, of the hydraulic oil cylinder through a connecting plate. A hinge joint is fixedly mounted on the manifold block, a stainless steel pipe is connected through the hinge joint, one end of the stainless steel pipe is connected to the hinge joint on the manifold block, and the other end of the stainless steel pipe is connected to a rodless cavity of the hydraulic oil cylinder through a pipe joint; the compensation device is externally hung, the compensation effect is achieved through the compensation device installed outside the hydraulic oil cylinder, the function of automatically releasing spring force is integrated, the double-piston and compressed air design is integrated in the hydraulic oil cylinder, and automatic compensation of the oil cylinder is not electrically controlled. According to the scheme, the reversing function, the speed adjusting function, the pressure maintaining function and the compensation function of the oil cylinder are achieved.

Description

Technical Field

[0001] The utility model relates to a car pressing system for a car dumper, in particular to an externally mounted car dumper pressing compensation system, and belongs to the field of bulk material unloading equipment for railway vehicles. Background Art

[0002] As an important component of the car tipper hydraulic system, the car pressure compensation system compresses the train car through the volume change in the hydraulic cylinder cavity, thus securing the car. Its stability is directly related to the unloading capacity of the entire car tipper system and the safety of the car.

[0003] The existing car pressing cylinder is mainly an ordinary hydraulic cylinder to achieve the clamping and fixing of the train car, and in order to release the spring during the flipping process, the hydraulic cylinder needs to be in a floating state without protection lock.

[0004] Disadvantages and supplements of existing technology:

[0005] While conventional hydraulic cylinders enable normal train car tipping, the hydraulic cylinders remain in a floating state. Without a protective lock, this could easily cause the train car to derail or even fall. This requires the coordination of a compensating cylinder to release the spring reaction force generated by the car's tilting. However, the compensating cylinder's piston rod often rusts, and excessive dust often causes the detection switch to malfunction, resulting in the entire car tipping system not functioning properly. This significantly impacts production efficiency and time. Utility Model Content

[0006] Aiming at the problems existing in the hydraulic system of the existing C-type tipper, a new external tipper pressing compensation system is designed. Its essence is a pressing cylinder that can realize the automatic compensation function. The compensation device is externally designed. The compensation effect is achieved by installing a compensation device on the outside of the hydraulic cylinder. The automatic release of spring force function is integrated. The hydraulic cylinder integrates a double piston and compressed air design, which can well solve the above problems.

[0007] After derrick hoists and puts in place, stamp fixedly derrick of derrick pin, make said post derrick hoists and puts in place, wherein said post derrick pins are located adjacent to the hydraulic cylinder to be fixedly secured to the bottom of the hydraulic cylinder.

[0008] Furthermore, the connecting plate is located on the top of the compensating device, with one end pressing on the top surface of the compensating device and the other end pressing on the end surface of the hydraulic cylinder body and being fastened by a locking bolt;

[0009] Furthermore, a fixing screw is provided on the oil block above the hinge joint, and the oil block is connected to the oil cavity port of the hydraulic cylinder rod through the fixing screw;

[0010] Furthermore, the number of the fixing screws is four.

[0011] Furthermore, the hinge joint and fixing screws are located on the front surface of the oil circuit block, and an oil return port and an oil inlet are opened on one side of the oil circuit block, and the oil return port and the oil inlet are arranged up and down; a pressure sensor is set on the other side of the oil circuit block;

[0012] Furthermore, a compensation oil pipe connection port is provided on the oil circuit block close to the location of the pressure sensor. One end of the compensation oil pipe is connected to the oil circuit block, and the other end is connected to the top of the compensation device through a pipe joint.

[0013] Furthermore, a hydraulic valve unit is provided on the lower surface of the oil circuit block, and a superimposed throttle valve, a hydraulically controlled one-way valve and an electromagnetic reversing valve are installed in sequence from the lower surface of the oil circuit block downward, and the superimposed throttle valve, hydraulically controlled one-way valve and electromagnetic reversing valve are fixed by screws.

[0014] Furthermore, the compensation device adopts a semi-integrated structure, which is convenient for processing and installation. It includes: a bottomless cylindrical welded shell, a gland of matching size is clamped on the bottom of the welded shell, the outer edge of the gland is fixedly connected to the welded shell by a plurality of screws, a cavity is provided inside the welded shell, and the welded shell and the gland at the bottom form a plunger cavity, in which a movable plunger is provided; a spring element is also installed between the movable plunger and the inner wall of the welded shell; a through hole for inserting a pipe joint is opened in the center of the top of the welded shell;

[0015] Furthermore, the spring element is a disc spring;

[0016] Furthermore, the movable plunger includes a plunger head portion and a plunger rod portion; the plunger head portion has a diameter greater than that of the plunger rod portion, and an outer convex portion is formed at a transition position between the two, and the diameter of the outer convex portion is greater than that of the plunger head portion;

[0017] The plunger head and the outer protrusion of the movable plunger are completely in contact with the inner wall of the welded shell, and a cavity for accommodating the spring element is formed between the outer diameter of the plunger rod and the welded shell;

[0018] Furthermore, the inner end surface of the gland is provided with a groove, the inner diameter of the groove matches the outer diameter of the plunger rod; the depth of the groove is the compensation stroke distance of the compensation device;

[0019] Furthermore, the outer protrusion of the movable plunger forms a compensation stroke stop of the compensation device, the upper part of the disc spring abuts against the lower surface of the outer protrusion, and the lower part of the disc spring abuts against the inner end surface of the pressure cover.

[0020] Furthermore, a sealing groove is provided around the outer diameter of the plunger head portion of the movable plunger, and the sealing member is embedded in the sealing groove to form a seal with the welding shell.

[0021] The principle and operation process of the above-mentioned external dumper pressure compensation system:

[0022] When oil flows into the oil inlet, the hydraulic cylinder remains stationary; when the electromagnet YV2 of the electromagnetic reversing valve is energized, oil flows into the rodless oil chamber and the hydraulic cylinder extends; when YV1 is energized and YV2 is de-energized, oil flows into the rod oil chamber and the hydraulic cylinder retracts, realizing the hydraulic cylinder action;

[0023] The car pressing action is when YV1 is energized and the hydraulic cylinder presses down; it stops when it contacts the upper edge of the train car; at this time, the oil inlet continues to supply oil until the pressure sensor reaches the set value, YV1 is de-energized, the car pressing action stops, and the rod chamber of the hydraulic cylinder is pressurized through a hydraulically controlled one-way valve; when the tipping machine is performing a tipping operation, the material overturns, and the train car pillow spring gradually releases the spring force to gradually increase the pressure in the rod chamber of the hydraulic cylinder. When the pressure value exceeds the pre-tightening force of the spring element of the compensation device, the movable plunger moves downward for dynamic compensation until it reaches the compensation limit, completing the compensation function; when the tipping is completed, YV2 is energized, the hydraulic cylinder extends and resets, and the pressure on the upper part of the movable plunger is released and reset, completing a compensation action.

[0024] The beneficial effects of the external dumper pressure compensation system of the utility model are:

[0025] The compensation device is externally designed, and the compensation effect is achieved by installing a compensation device on the outside of the hydraulic cylinder. It integrates the automatic release of spring force function, and the hydraulic cylinder integrates a double piston and compressed air design. The cylinder automatic compensation has no electrical control; the hydraulic valve is integrated into the structural design of the hydraulic cylinder; this solution has the cylinder's reversing function, speed regulation function, pressure holding function, and compensation function; the compensation method is achieved through the mechanical movement of the disc spring; the compensation device structure adopts a semi-integrated structure, and is equipped with a compensation stroke stop, which mechanically forces the disc spring to be compressed after it is in place; and the cylinder is a fully enclosed design, resistant to pollution and harsh environment; it has a simple structure and is easy to maintain, effectively solving the defects and supplements of existing car pressing cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the structural diagram of the vehicle pressure compensation system of the external dumper of this utility model.

[0027] Figure 2 for Figure 1 side view.

[0028] Figure 3 for Figure 1 Stereoscopic image.

[0029] Figure 4 for Figure 1 Cross-sectional view of the compensation device.

[0030] Figure 5 This is the principle diagram of the vehicle pressure compensation system of the external dumper of this utility model.

[0031] In the figure, 1. hydraulic cylinder, 2. compensation device, 3. oil circuit block, 4. connecting plate, 5. hinge joint, 6. stainless steel pipe, 7. pipe joint, 8. fixing screw, 9. oil return port, 10. oil inlet, 11. pressure sensor, 12. compensation oil pipe, 13. pressure measuring joint, 14. superimposed throttle valve, 15. hydraulically controlled one-way valve, 16. solenoid reversing valve, 2.1. welded shell, 2.2. gland, 2.3. screw, 2.4. movable plunger, 2.5. spring element, 2.2.1. gland groove, 2.6. seal. DETAILED DESCRIPTION

[0032] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1-5 The shown external dumper car pressing compensation system includes: a hydraulic cylinder 1 and a compensation device 2 fixedly suspended on the outside of the hydraulic cylinder 1; the cylinder body of the hydraulic cylinder 1 includes an upper rod chamber and a lower rodless chamber; an oil port is provided at the upper part of the rod chamber, and an oil block 3 is installed at the oil port position of the rod chamber on the hydraulic cylinder 1, and the compensation device 2 is fixed to the outer wall of the cylinder body of the hydraulic cylinder 1 adjacent to the position of the oil block 3 through a connecting plate 4; a hinged head 5 is fixedly installed on the oil block 3, and a stainless steel pipe 6 is connected through the hinged head 5, one end of the stainless steel pipe 6 is connected to the hinged head 5 on the oil block 3, and the other end is connected to the rodless chamber of the hydraulic cylinder 1 through a pipe joint 7;

[0034] The connecting plate 4 is located on the top of the compensation device 2, with one end pressing on the top surface of the compensation device 2 and the other end pressing on the end surface of the hydraulic cylinder 1 and fastened by a locking bolt;

[0035] The oil block 3 is provided with a fixing screw 8 above the hinge joint 5, and the oil block 3 is connected to the rod oil cavity port of the hydraulic cylinder 1 through the fixing screw 8;

[0036] In this embodiment, the number of the fixing screws 8 is four.

[0037] The hinged joint 5 and the fixing screw 8 are both located on the front surface of the oil block 3. An oil return port 9 and an oil inlet 10 are provided on one side of the oil block 3. The oil return port 9 and the oil inlet 10 are arranged vertically. A pressure sensor 11 is provided on the other side of the oil block 3 to measure the pressure of the vehicle and control the action of the hydraulic cylinder.

[0038] A compensation oil pipe connection port is also provided on the oil circuit block 3 near the location of the pressure sensor 11. One end of the compensation oil pipe 12 is connected to the oil circuit block 3, and the other end is connected to the top of the compensation device 2 through a pipe joint 7. Pressure oil is provided to the compensation device 2 through the compensation oil pipe 12.

[0039] A pressure measuring joint 13 is also provided on the front surface of the oil passage block 3 .

[0040] A hydraulic valve unit is also installed on the lower surface of the oil block 3. This unit consists of a stacked throttle valve 14, a hydraulically controlled check valve 15, and a solenoid reversing valve 16, mounted in sequence from the lower surface downward. These stacked throttle valve 14, hydraulically controlled check valve 15, and solenoid reversing valve 16 are secured by screws. The hydraulically controlled check valve 15 maintains pressure in the hydraulic cylinder 1, while the solenoid reversing valve 16 controls the extension and contraction of the hydraulic cylinder 1 by energizing or de-energizing its electromagnet.

[0041] The compensation device 2 adopts a semi-integral structure, which is convenient for processing and installation. It comprises: a bottomless cylindrical welded shell 2.1, a gland 2.2 of matching dimensions being clamped to the bottom of the welded shell 2.1, and a plurality of screws 2.3 securing the outer edge of the gland 2.2 to the welded shell 2.1. A cavity is provided within the welded shell 2.1, and the welded shell 2.1 and the gland 2.2 at the bottom form a plunger cavity, in which a movable plunger 2.4 is disposed. A spring element 2.5 is also installed between the movable plunger 2.4 and the inner wall of the welded shell 2.1. A through hole is provided at the top center of the welded shell 2.1 for inserting a pipe connector 7. Pressurized oil is injected into the compensation device 2 through the through hole, and the pressure pushes the movable plunger 2.4 to move.

[0042] The spring element 2.5 is a disc spring, which has a relatively small structure and volume, saves space, and realizes the compactness of the compensation device;

[0043] The movable plunger 2.4 comprises a plunger head portion and a plunger rod portion; the plunger head portion has a larger diameter than the plunger rod portion and an outer convex portion is formed at the transition between the two portions, the outer convex portion having a larger diameter than the plunger head portion;

[0044] The plunger head and the outer protrusion of the movable plunger 2.4 are completely in contact with the inner wall of the welded housing, and a cavity for accommodating the spring element 2.5 is formed between the outer diameter of the plunger rod and the welded housing 2.1;

[0045] The inner end surface of the gland 2.2 is provided with a groove 2.2.1, the inner diameter of which matches the outer diameter of the plunger rod; the depth of the groove 2.2.1 is the compensation stroke distance of the compensation device 2;

[0046] The outer protrusion of the movable plunger 2.4 forms a compensation stroke stop of the compensation device 2, the upper part of the disc spring abuts against the lower surface of the outer protrusion, and the lower part of the disc spring abuts against the inner end surface of the pressure cover 2.2.

[0047] The outer diameter of the plunger head of the movable plunger 2.4 is also surrounded by a sealing groove, and the seal 2.6 is embedded in the sealing groove to form a seal with the welded shell 2.1 to prevent hydraulic oil from entering and ensure sealing.

[0048] In order to better ensure the sealing effect, two seals 2.6 are arranged in parallel on the upper and lower sides of the outer diameter of the plunger head of the movable plunger 2.4; and as other embodiments of this solution, the number of seals 2.6 can be increased or decreased according to actual needs.

[0049] The principle and operation process of the above-mentioned external dumper pressure compensation system:

[0050] When oil flows into the oil inlet 10, the hydraulic cylinder 1 remains stationary; when the electromagnet YV2 of the electromagnetic reversing valve 16 is energized, oil flows into the rodless oil chamber and the hydraulic cylinder 1 extends; when YV1 is energized and YV2 is de-energized, oil flows into the rod oil chamber and the hydraulic cylinder 1 retracts, realizing the action of the hydraulic cylinder 1;

[0051] The car pressing action is when YV1 is energized and the hydraulic cylinder 1 presses down; it stops when it touches the upper edge of the train car; at this time, the oil inlet 10 continues to supply oil until the pressure sensor 11 reaches the set value, YV1 is de-energized, the car pressing action stops, and the rod chamber of the hydraulic cylinder 1 is pressurized through the hydraulically controlled one-way valve 15; when the tipping machine performs the dumping operation, the material overturns, and the train car pillow spring gradually releases the spring force to gradually increase the pressure in the rod chamber of the hydraulic cylinder 1. When the pressure value exceeds the pre-tightening force of the spring element 2.5 of the compensation device 2, the movable plunger 2.4 moves downward for dynamic compensation until it reaches the compensation limit, completing the compensation function; when the dumping is completed, YV2 is energized, the hydraulic cylinder 1 extends and resets, and the upper pressure of the movable plunger 2.4 is released and reset, completing a compensation action.

[0052] The key point of this solution is that the hydraulic cylinder realizes the buffering function through the structure of the external compensation device; the protection point is the structure that realizes the compensation function through the external compensation device, and the fully enclosed structure realizes pollution prevention and resistance to harsh environment, integrated appearance structural features, and structural principles.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0056] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0057] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

Claims

1. A car pressure compensation system for an external dumper, characterized in that: include: The camming mechanism is a very important part of the hydraulic cylinder and is a very important part of the hydraulic system. The camming mechanism is very important for the hydraulic cylinder to be easily installed on the camming surface. The camming mechanism is very important for the hydraulic cylinder to be easily installed on the camming surface.

2. The external dumper pressure compensation system according to claim 1, characterized in that: The oil passage block is provided with a fixing screw at a position above the hinge joint, and the oil passage block is connected to the oil port of the rod oil chamber of the hydraulic cylinder through the fixing screw.

3. The external dumper pressure compensation system according to claim 1, characterized in that: The hinge joint and fixing screws are both located on the front surface of the oil circuit block. An oil return port and an oil inlet are provided on one side of the oil circuit block, and the oil return port and the oil inlet are arranged up and down. A pressure sensor is provided on the other side of the oil circuit block.

4. The external dumper pressure compensation system according to claim 3 is characterized in that: A compensation oil pipe connection port is also provided on the oil circuit block near the location of the pressure sensor. One end of the compensation oil pipe is connected to the oil circuit block, and the other end is connected to the top of the compensation device through a pipe joint.

5. The external dumper pressure compensation system according to claim 1 is characterized in that: A hydraulic valve unit is also provided on the lower surface of the oil circuit block. A superimposed throttle valve, a hydraulically controlled one-way valve and an electromagnetic reversing valve are installed in sequence from the lower surface of the oil circuit block downward. The superimposed throttle valve, hydraulically controlled one-way valve and electromagnetic reversing valve are fixed by screws.

6. The vehicle pressure compensation system for an external dumper according to any one of claims 1 to 5, characterized in that: The compensation device adopts a semi-integrated structure, which includes: a bottomless cylindrical welded shell, a pressure cover with matching size is clamped on the bottom of the welded shell, the outer edge of the pressure cover is fixedly connected to the welded shell by a number of screws, a cavity is set inside the welded shell, the welded shell and the pressure cover at the bottom form a plunger cavity, and a movable plunger is set in the plunger cavity; a spring element is also installed between the movable plunger and the inner wall of the welded shell; a through hole for plugging in the pipe joint is opened in the center of the top of the welded shell.

7. The external dumper pressure compensation system according to claim 6, characterized in that: The spring element is a disc spring.

8. The vehicle crushing compensation system for an external dumper according to claim 6, characterized in that: The movable plunger includes a plunger head portion and a plunger rod portion; the plunger head portion has a diameter greater than that of the plunger rod portion and an outer convex portion is formed at a transition position between the two, the diameter of the outer convex portion being greater than that of the plunger head portion.

9. The vehicle crushing compensation system for an external dumper according to claim 8, characterized in that: The inner end surface of the gland is provided with a groove, the inner diameter of the groove matches the outer diameter of the plunger rod; the depth of the groove is the compensation stroke distance of the compensation device.

10. The vehicle crushing compensation system for an external dumper according to claim 8, characterized in that: The outer diameter of the plunger head portion of the movable plunger is also provided with a sealing groove, and the sealing member is embedded in the sealing groove to form a seal with the welding shell.

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