Rail clamp for unloader, unloader including the rail clamp, and braking method

Abstract

The present invention discloses a rail clamp for a discharging truck, which includes a mounting frame for mounting and supporting components of a braking device, a hydraulic brake connected to the mounting frame for providing braking force, a braking hanger connected to the frame of the discharging truck, a braking clamp assembly, and a guide wheel for guiding the braking clamp assembly to always be in a working position. It also discloses a discharging truck including the rail clamp and a braking method using the rail clamp. The single-drive rail clamp for a discharging truck provided by the present invention uses a single hydraulic brake to transmit power through the cooperation of a double-headed screw, a brake seat, and a braking hanger to achieve braking. The structure is simple and reliable, and it can be used in a narrow space. It can not only ensure smooth parking of the discharging truck under no-load conditions, but also ensure timely and smooth parking of the discharging truck under loading conditions.

Description

Technical Field

[0001] The present invention relates to a rail clamp for a tripper, a tripper including the rail clamp, and a braking method using the rail clamp. Background Art

[0002] A tripper is a discharging device used in conjunction with a belt conveyor. It is widely used in industries such as metallurgy, coal, electricity, cement, and mines. When using a belt conveyor to transport materials to a storage bin, the tripper can move along a track parallel to the longitudinal center line of the belt conveyor and discharge the materials into multiple bins according to the process. With the increasing application of trippers, traditional rail clamps for trippers can only meet the requirement of parking the tripper under no-load conditions, but cannot meet the parking demand under full-load conditions. When the tripper is under full load, the driving force during normal operation is provided by an electric motor, keeping the tripper in a normal operating condition. When the system suddenly loses power, the inertial force generated by the tripper under the action of the material inertia needs to be balanced by the braking force of the braking device, and the entire tripper is in a stable braking condition. When braking during shutdown or sudden power failure, due to the lack of a reliable braking system, accidents such as collisions will occur, and the consequences are very serious. On the other hand, when the tripper is running, the space is narrow, and it cannot use double hydraulic brakes to drive like other braking systems. Therefore, it is desired to provide a braking device suitable for narrow spaces, with a simple and compact structure, which can not only ensure smooth parking of the tripper under no-load conditions but also ensure timely and smooth parking of the tripper under full-load conditions. Summary of the Invention

[0003] To effectively solve or at least alleviate at least one or more of the above problems and other problems existing in the prior art, the present invention provides the following technical solutions.

[0004] According to one aspect of the present invention, there is provided a rail clamp for a tripper, including a left second mounting frame for mounting and supporting components of a braking device, a hydraulic brake connected to the second mounting frame for providing driving force, a braking hanger connected to the tripper frame, a braking caliper assembly, and a guide wheel for guiding the braking caliper assembly to always be in a working position. Due to the design that one hydraulic brake is used to transmit power through the cooperation of a double-headed screw, a brake seat, and a braking hanger to achieve braking, the structure is simple and reliable, and it can be used in a narrow space, which can not only ensure smooth parking of the tripper under no-load conditions but also ensure timely and smooth parking of the tripper under full-load conditions.

[0005] Further, the first mounting frame is of an angle steel structure, connected to the wheel axle of the guide wheel on the side close to the rail, and connected to the braking caliper assembly on the side far from the rail. When the braking caliper assembly moves, the first mounting frame can move on the guide wheel axle;

[0006] The second mounting bracket is of angle steel structure, with one side close to the rail connected to the axle of the guide wheel and the other side away from the rail connected to the hydraulic brake. When the hydraulic brake operates, the second mounting bracket can move on the guide wheel axle.

[0007] Further, the hydraulic brake is provided with a brake disc, and the brake disc is provided with a right brake shoe. When the hydraulic brake operates, it can drive the right brake shoe to move. The hydraulic brake is also provided with a base, and there are through holes on the base for connecting double-headed studs. The base is connected to the brake caliper assembly. When the brake hydraulic operates, the base can drive the brake caliper assembly to move.

[0008] Further, the upper end of the brake hanger is mounted on the unloading vehicle frame, with a through hole in the middle and a threaded hole at the lower end.

[0009] Further, the brake caliper assembly includes a brake caliper seat, a brake caliper plate connected to the brake caliper seat, a double-headed stud adjusting screw, and a return spring arranged on the adjusting screw. The brake caliper seat is movably mounted on the brake hanger through the through hole. Under the action of an external force, the brake caliper seat can reciprocate left and right relative to the brake hanger within the through hole.

[0010] Further, there are also through holes on the brake caliper seat for connecting double-headed studs. The brake caliper plate is L-shaped, with a through hole at the upper end for connecting double-headed studs and a left brake shoe arranged on the lower end close to the rail side.

[0011] Further, the double-headed studs connect the brake caliper plate, the brake caliper seat, and the base on the hydraulic brake.

[0012] Further, a return spring is arranged on the adjusting screw. One end of the adjusting screw is connected to the brake caliper plate, and the other end is connected to the threaded hole at the lower end of the brake hanger. When the brake caliper plate moves left and right driven by the brake caliper seat, the return spring can deform.

[0013] Further, the guide wheel is located above the rail. One end of the guide wheel is mounted on the first mounting bracket, and the other end is mounted on the second mounting bracket.

[0014] Further, there are two guide wheels. There is a left brake shoe connected to the brake caliper plate and a right brake shoe connected to the brake disc of the hydraulic brake between the two guide wheels. The guide wheels can guide the left and right brake shoes.

[0015] In another aspect of the present invention, a unloading vehicle is provided, and the unloading vehicle includes the above-mentioned rail clamp.

[0016] Another aspect of the present invention provides a braking method using the rail clamp. When the unloading truck needs to stop running or an emergency braking situation occurs, the control system controls the hydraulic pump to release pressure so that the hydraulic oil of the hydraulic brake 3 flows back into the hydraulic system. At this time, the disc spring 35 in the hydraulic brake 3 returns from the compressed state. Due to the action of the elastic restoring force, it pushes the brake disc 33 and drives the right brake shoe 34 to approach the rail 7, and the right brake shoe 34 is in close contact with the rail 7; the disc spring 35 continues to recover, pushing the cylinder block 32 of the hydraulic brake 3 to move away from the brake disc 33, and at the same time the cylinder block 32 drives the base 36 of the hydraulic brake 3 to move; the base 36 drives the brake seat 51 to move through the stud 53, and the brake seat 51 drives the L-shaped brake caliper plate 52 to move closer to the rail 7 until the left brake shoe 56 is in close contact with the rail 7, completing the clamping action on both sides of the rail, and the unloading truck brakes and stops; when the unloading truck starts to run, the control system starts the hydraulic pump to inject the hydraulic oil of the hydraulic brake 3 from the oil injection hole 31 to push the piston 37 to move, driving the brake disc 33 equipped with the right brake shoe 34 away from the rail, and the disc spring 35 compresses and stores energy. At this time, the return spring 55 returns from the compressed state, and due to the action of the elastic restoring force, it drives the clamp plate 43 away from the rail, completing the brake release action, and the unloading truck runs normally.

[0017] Compared with the prior art, the present invention has the following characteristics:

[0018] Using a single hydraulic brake to provide braking force on the outside of the unloading truck saves installation space and is beneficial to the normal operation of the unloading truck in a narrow space; the cooperation of the brake caliper plate, stud, brake seat, and brake hanger can effectively transfer the clamping force generated by the hydraulic brake to the brake shoe, effectively preventing the material truck from crashing during full-load braking; at the same time, the structure is reasonable and compact, facilitating control.

[0019] In this technical solution, adopting a single-drive braking component with a brake seat as an important technical feature has novelty, creativity, and practicality in the technical field of unloading truck braking. The terms in this technical solution can be explained and understood using patent documents in this technical field.

[0020] Based on the following description and drawings, the above technical features and operations of the present invention will become more obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] From the following detailed description in conjunction with the drawings, the above and other objects, features, and advantages of the present invention will become more completely clear, wherein the same or similar elements are denoted by the same reference numerals.

[0022] Figure 1 It is the front view of the rail clamp of the unloading truck according to an embodiment of the present invention.

[0023] Figure 2It is the left view of the rail clamp of the unloading truck according to an embodiment of the present invention.

[0024] Figure 3 It is the top view of the rail clamp of the unloading truck according to an embodiment of the present invention.

[0025] Label description:

[0026] 1. First mounting bracket, 2. Second mounting bracket, 3. Hydraulic brake, 4. Brake hanging bracket, 5. Brake caliper assembly, 6. Guide wheel, 7. Rail.

[0027] Among them: 31. Oil injection hole, 32. Cylinder block, 33. Brake disc, 34. Right brake shoe, 35. Disc spring, 36. Base, 37. Piston 41. Through hole, 42. Threaded hole 51. Brake seat, 52. Brake caliper plate, 53. Stud, 54. Adjusting screw, 55. Return spring, 56. Left brake shoe. Detailed implementation mode

[0028] According to the examination guidelines, terms such as "having", "comprising", and "including" used in the present invention should be understood as not excluding the presence or addition of one or more other elements or combinations thereof.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following embodiments are commercially available. If there is no clear description of the processing conditions, please refer to the product manual purchased or follow the conventional methods in the art.

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Figure 1 It is a structural schematic diagram of the present invention. This embodiment will be specifically described in conjunction with the accompanying drawings.

[0034] According to one aspect of the present invention, a rail clamp for a discharging vehicle is provided, which includes a left second mounting bracket 1 and 2 for mounting and supporting components of a braking device, a hydraulic brake 3 connected to the second mounting bracket for providing drive, a braking hanger 4 connected to the frame of the discharging vehicle, a braking clamp assembly 5, and guide wheels 6 for guiding the braking clamp assembly to always be in a working position. Using a single hydraulic brake 3 to provide braking force outside the discharging vehicle saves installation space and is beneficial to the normal operation of the discharging vehicle in a narrow space; the cooperation of a brake caliper plate 52, a stud 53, a brake seat 51, and a braking hanger 4 can effectively transmit the rail clamping force generated by the hydraulic brake 3 to the left brake shoe 56 and the right brake shoe 34, effectively preventing the vehicle from crashing due to insufficient braking force when fully loaded; at the same time, the structure is reasonable and compact, facilitating control.

[0035] In this embodiment, the first mounting bracket 1 is of angle steel structure, connected to the axle of the guide wheel 6 on one side close to the rail 7 and connected to the braking clamp assembly 5 on the other side far from the rail 7. When the braking clamp assembly 5 acts, the first mounting bracket 1 can move on the guide wheel axle 6; the second mounting bracket 2 is of angle steel structure, connected to the hydraulic brake 3 on one side close to the rail 7 and connected to the axle of the guide wheel 6 on the other side far from the rail 7. When the hydraulic brake 3 acts, the second mounting bracket 2 can move on the guide wheel axle. Its technical purpose is that when the hydraulic brake 3 acts and drives the left brake shoe 56 and the right brake shoe 34 to move closer to or away from the rail 7, since the mounting brackets 1 and 2 are movably connected to the axle of the guide wheel 6 and can move on the axle, it will not hinder the movement of the left and right brake shoes, which is beneficial to completing the braking action.

[0036] In this embodiment, a brake disc 33 is provided on the hydraulic brake 3, and a right brake shoe 34 is provided on the brake disc 33. When the hydraulic brake 3 operates, it can drive the right brake shoe 34 to move. The hydraulic brake 3 is further provided with a base 36 having a through hole. The base 36 is connected to the brake caliper assembly 5. When the brake hydraulic 3 operates, it can drive the brake caliper assembly 5 to move. Its technical purpose is that when the hydraulic brake 3 operates, the disc spring 35 returns from the compressed state to the relaxed state, pushes the brake disc 33 and drives the right brake shoe 34 towards the rail 7. The right brake shoe 34 is in close contact with the rail 7. The disc spring 35 continues to relax, pushing the cylinder block 32 of the hydraulic brake 3 to move away from the brake disc 33. At the same time, the cylinder block 32 drives the base 36 of the hydraulic brake 3 to move. The base 36 is connected to the double-headed stud 53 of the brake caliper assembly 5. Therefore, when the base 36 moves, it can drive the brake caliper plate 52 to move through the double-headed stud 53 to achieve braking.

[0037] In this embodiment, the upper end of the brake hanger 4 is installed on the unloading vehicle frame, a through hole 41 is provided in the middle, and a threaded hole 42 is provided at the lower end. The cross-sectional shape and size of the through hole 41 of the brake hanger 4 are the same as those of the brake seat 51. The brake seat 51 can be installed in the through hole 41. The double-headed stud 53 passes through the brake seat. That is, the brake seat 51 is movably installed on the brake hanger 4 through the through hole 41. Under the action of an external force, the brake seat 51 can reciprocate left and right relative to the brake hanger 4 in the through hole 41. Its technical purpose is that when the above double-headed stud 53 moves driven by the hydraulic brake 3, the double-headed stud 53 can drive the brake seat 51 to move in the through hole 41 of the brake hanger 4 to achieve braking and releasing the brake of the unloading vehicle.

[0038] In this embodiment, the brake caliper assembly 5 includes a brake seat 51, a brake caliper plate 52 connected to the brake seat 51, a double-headed stud 53, an adjusting screw 54, and a return spring 55 provided on the adjusting screw. The brake caliper plate 52 is L-shaped, with a through hole provided at the upper end and a left brake shoe 56 provided on the side close to the rail at the lower end. One end of the brake caliper plate 52 is connected to the brake seat 51 through the double-headed stud 53, and the other end is provided with a left brake shoe 56. Its technical purpose is that when the above brake seat 51 moves in the through hole 41 of the brake hanger 4, driven by the double-headed stud 53, the brake caliper plate 52 can move away from or close to the rail to achieve braking and releasing the brake of the unloading vehicle.

[0039] In this embodiment, the stud 53 passes through the through hole to connect the L-shaped brake caliper plate 52, the brake seat 51 and the base 36 on the hydraulic brake 3. Its technical purpose is: by connecting the brake caliper plate 52, the brake seat 51 and the base of the hydraulic brake 3 through the stud 53, the movement generated by the hydraulic brake 3 can be transmitted to the brake caliper plate 52 through the stud 53, and then the two-way closing brake can be realized by using the single-side drive method.

[0040] In this embodiment, a return spring 55 is arranged on the adjusting screw 54. One end of the adjusting screw 54 is connected to the L-shaped brake caliper plate 52, and the other end is connected to the threaded hole 42 at the lower end of the brake hanger 4. When the brake caliper plate 52 moves left and right driven by the brake seat 51, the return spring can be deformed. Its technical purpose is: when the brake release action occurs, the control system starts the hydraulic pump to inject the hydraulic oil of the hydraulic brake 3 from the oil injection hole 31 to push the piston 37 to move, driving the brake disc 33 with the right brake shoe 34 to leave the track 7, and the disc spring 35 compresses and stores energy. At this time, since the right brake shoe 34 leaves the track 7, the return spring 55 loses the external force and returns from the compressed state. Due to the action of the elastic restoring force, the left brake shoe 56 on the brake caliper plate 52 is driven to leave the track 7, completing the brake release action.

[0041] In this embodiment, the guide wheel 6 is arranged above the track 7. One end of the guide wheel 6 is installed on the first mounting bracket 1, and the other end is installed on the second mounting bracket 2. There are two guide wheels 6. Between the two guide wheels 6, there are a left brake shoe 56 connected to the brake caliper plate 52 and a right brake shoe 34 connected to the brake disc 33 of the hydraulic brake 3. The guide wheel 6 can play a guiding role for the left and right brake shoes. Its technical purpose is: it is beneficial to ensure that there is always a gap between the track 7 and the brake caliper assembly 4 and the hydraulic brake 3 under the normal working state of the unloading truck, so as to avoid the wear of the brake shoes and the track caused by the large bending error of the track.

[0042] In another aspect of the present invention, a discharging vehicle is provided, which includes the above-mentioned rail clamp. In still another aspect of the present invention, a braking method using the rail clamp is provided. When in use, when the discharging vehicle needs to stop running or an emergency braking situation occurs, the control system controls the hydraulic pump to release pressure so that the hydraulic oil in the hydraulic brake 3 flows back into the hydraulic system. At this time, the disc spring 35 in the hydraulic brake 3 returns from the compressed state. Due to the action of the elastic restoring force, it pushes the brake disc 33 and drives the right brake shoe 34 to move closer to the rail 7. The right brake shoe 34 is in close contact with the rail. The disc spring 35 continues to recover, and the elastic restoring force continues to push the cylinder block 32 of the hydraulic brake 3 to move away from the brake disc 33 in the reverse direction. At the same time, the cylinder block 32 drives the base 36 of the hydraulic brake 3 to move, the base 36 drives the brake seat 51 to move, and the brake seat 51 drives the L-shaped brake caliper plate 52 to move closer to the rail 7 until the left brake shoe 56 is in close contact with the rail 7, completing the clamping action on both sides of the rail 7 and meeting the requirements for the discharging vehicle to stop and hold its position. When the discharging vehicle starts to run, the control system starts the hydraulic pump to inject the hydraulic oil of the hydraulic brake 3 from the oil injection hole 31 to push the piston 37 to move, driving the brake disc 33 installed with the right brake shoe 34 to move away from the rail 7 to the right, and the disc spring 35 compresses and stores energy. At this time, since the right brake shoe 34 moves away from the rail 7, the return spring 55 loses the external force and returns from the compressed state, driving the brake caliper plate 52 to move away from the rail 7. At this time, the brake release action is completed, and the discharging vehicle is in normal operating conditions.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that modifications or equivalent replacements can still be made to the specific embodiments of the present invention. Any modification or equivalent replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

[0044] The present invention has the following characteristics:

[0045] 1. Since it is designed to use a single hydraulic brake 3 to provide braking force outside the discharging vehicle, it saves installation space and is beneficial to the normal operation of the discharging vehicle in a narrow space.

[0046] 2. Due to the design of the cooperation of the brake caliper plate 52, the stud 53, the brake seat 51, and the brake hanger 4, the clamping force generated by the hydraulic brake 3 can be effectively transmitted to the left brake shoe 56 and the right brake shoe 34, effectively preventing the crashing accident of the material vehicle due to insufficient braking force when fully loaded and braking.

[0047] 3. Since it is designed that the base 36 is connected to the stud 53 of the brake caliper assembly 5, when the base 36 moves, the brake caliper plate 2 can be driven to move through the stud 53 to achieve braking.

[0048] 4. Since it is designed that the mounting brackets 1 and 2 are movably connected to the axle of the guide wheel 6 and can move on the axle, it will not hinder the movement of the left and right brake shoes, which is beneficial to completing the braking action.

[0049] 5. Since it is designed that the stud 53 can drive the brake seat 51 to move in the through hole 41 of the brake hanger 4, it is beneficial for the brake caliper plate 52 to move away from or close to the track by the drive of the stud 53, thereby realizing the braking and releasing of the unloader.

[0050] 6. Since it is designed that the guide wheel 6 is provided, it is beneficial to ensure that there is always a gap between the track 7 and the brake caliper assembly 4 and the hydraulic brake 3 under the normal working condition of the unloader, so as to avoid the wear of the brake shoes and the track caused by the large bending error of the track.

[0051] 7. Due to the design of the technical features of the present invention, through the combined action of the technical features alone and with each other, tests show that the performance indicators of the present invention are at least 1.7 times that of the existing performance indicators, and it has good market value through evaluation.

[0052] There are also other technical features with a hydraulic brake that drives a brake disc to transmit force through a stud to achieve two-way brake shoe braking, which are all one of the embodiments of the present invention. And the technical features of the above-mentioned embodiments can be combined arbitrarily. To meet the requirements of the Patent Law, the Patent Implementing Regulations and the Examination Guidelines, the embodiments of all possible combinations of the single technical features in the above-mentioned embodiments will not be described one by one.

[0053] Therefore, in the technical field related to the braking technology of unloaders, all technical contents that include a hydraulic brake driving a brake disc to transmit force through a stud to achieve two-way brake shoe braking are within the protection scope of the present invention. The above-mentioned embodiments are only one implementation form of a rail clamp for an unloader provided by the present invention. This single-drive rail clamp structure can be extended to other braking devices. In short, other deformations according to the solution provided by the present invention, adding or reducing components or steps therein, or applying the present invention to other technical fields close to the present invention all belong to the protection scope of the present invention.

Claims

1. A rail clamp for a discharging vehicle, characterized in that: It includes a first mounting bracket (1), a second mounting bracket (2) for mounting components of a support braking device, a hydraulic brake (3) connected to the second mounting bracket (2) for providing drive, a braking hanger (4) connected to the unloading truck frame, a brake caliper assembly (5) and a guide wheel (6); One side of the first mounting bracket (1) is connected to the guide wheel (6), and the other side is connected to the brake caliper assembly (5); one side of the second mounting bracket (2) is connected to the guide wheel (6), and the other side is connected to the hydraulic brake; The hydraulic brake (3) is provided with a base (36) having a through hole, and the base (36) is connected to the brake caliper assembly (5). When the hydraulic brake (3) operates, the base (36) can drive the brake caliper assembly (5) to move; The upper end of the braking hanger (4) is mounted on the unloading truck frame, a through hole (41) is provided in the middle, and a threaded hole (42) is provided at the lower end; The brake caliper assembly (5) includes a brake shoe seat (51), a brake caliper plate (52) connected to the brake shoe seat (51), a stud (53), an adjusting screw (54) and a return spring (55) provided on the adjusting screw (54); the brake shoe seat (51) is movably mounted on the braking hanger (4) through the through hole (41). Under the action of an external force, the brake shoe seat (51) reciprocates left and right relative to the braking hanger (4) within the through hole (41); The brake shoe seat (51) is also provided with a through hole for connecting the stud (53); the brake caliper plate (52) is L-shaped, and a through hole is provided at the upper end for connecting the stud (53), and a left brake shoe (56) is provided at the lower end close to the rail side; the stud (53) passes through the through hole to connect the brake caliper plate (52), the brake shoe seat (51) and the base (36) on the hydraulic brake (3); one end of the adjusting screw (54) is connected to the L-shaped brake caliper plate (52), and the other end is connected to the threaded hole (42) at the lower end of the braking hanger (4); The hydraulic brake (3) is also provided with a brake disc (33), and a right brake shoe (34) is provided on the brake disc (33). When the hydraulic brake (3) operates, it can drive the right brake shoe (34) to move.

2. The rail clamp for a tripper according to claim 1, characterized in that: The first mounting bracket (1) is of angle steel structure. One side close to the rail is connected to the axle of the guide wheel (6), and the other side away from the rail is connected to the brake caliper assembly (5). When the brake caliper assembly (5) operates, the first mounting bracket (1) can move on the axle of the guide wheel (6); the second mounting bracket (2) is of angle steel structure. One side close to the rail is connected to the axle of the guide wheel (6), and the other side away from the rail is connected to the hydraulic brake (3). When the hydraulic brake (3) operates, the second mounting bracket (2) can move on the axle of the guide wheel (6).

3. The rail clamp for a tripper according to claim 2, characterized in that: When the brake caliper plate (43) moves left and right driven by the brake shoe seat (51), the return spring (55) can be deformed.

4. The rail clamp for a discharging vehicle according to claim 3, characterized in that: The guide wheel (6) is arranged above the track (7). One end of the guide wheel (6) is mounted on the first mounting bracket (1), and the other end is mounted on the second mounting bracket (2).

5. The rail clamp for a discharging truck according to claim 4, characterized in that: There are two guide wheels (6). Between the two guide wheels (6), there are a left brake shoe (56) connected to the brake caliper plate (52) and a right brake shoe (34) connected to the brake disc (33) of the hydraulic brake (3). The guide wheel (6) can guide the left and right brake shoes (56, 34).

6. A discharging vehicle, characterized in that: It includes the rail clamp described in claim 5.

7. A braking method for the rail clamp of a discharging vehicle, characterized in that: Adopt the unloading truck described in claim 6, and its braking steps are as follows: a) When the unloading truck needs to stop running or an emergency braking situation occurs, the control system controls the hydraulic pump to release pressure so that the hydraulic oil of the hydraulic brake (3) flows back into the hydraulic system. At this time, the disc spring (35) in the hydraulic brake (3) returns from the compressed state. Due to the action of the elastic restoring force, it pushes the brake disc (33) and drives the right brake shoe (34) to approach the track (7), and the right brake shoe (34) is in close contact with the track (7); b) The disc spring (35) continues to recover, pushing the cylinder block (32) of the hydraulic brake (3) to move away from the brake disc (33), and at the same time the cylinder block (32) drives the base (36) of the hydraulic brake (3) to move; c) The base (36) drives the brake shoe seat (51) to move through the stud (53), and the brake shoe seat (51) drives the L-shaped brake caliper plate (52) to move closer to the track (7) until the left brake shoe (56) is in close contact with the track (7), completing the braking action on both sides of the track, and the unloading truck brakes and stops; d) When the unloading truck starts to run, the control system starts the hydraulic pump to inject the hydraulic oil of the hydraulic brake (3) from the oil injection hole (31) to drive the piston (37) to move, driving the brake disc (33) equipped with the right brake shoe (34) away from the track, and the disc spring (35) compresses and stores energy. At this time, the return spring (55) returns from the compressed state. Due to the action of the elastic restoring force, it drives the brake caliper plate (52) away from the track, completing the brake release action, and the unloading truck runs normally.

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