Rack rail trapped rail vehicle, driving unit and swing frame assembly

Abstract

The invention relates to a rack rail trapped rail vehicle, a driving unit and a swing frame assembly, and belongs to the technical field of rack rail trapped rail vehicles. The swing frame assembly runs on the rack rail and comprises a fixed seat and a swing frame pivoted with the fixed seat through a hinge shaft; two rollers in rolling contact with the top surface of the special-shaped rail on the corresponding side are arranged on one side of the swing frame at intervals, and two brake assemblies are arranged on the other side of the swing frame at intervals; each brake assembly comprises a first brake block, a second brake block and a double-acting oil cylinder, the double-acting oil cylinders drive the two brake blocks to be far away from or close to each other to achieve separation or abutting connection with the peripheral faces of the corresponding idler wheels and the lower surface of the special-shaped rail top plate, and braking and braking releasing are completed. The driving unit comprises a mounting frame and the swing frame assemblies arranged on the two sides of the bottom of the mounting frame. The rack rail clamping vehicle comprises a driving assembly, and the driving unit is installed on a driving frame of the driving assembly. According to the scheme, the swing frame swings in a self-adaptive mode to adapt to track fluctuation, a double-brake structure of the double brake blocks is combined, and the running stability and safety of the rack rail trapped rail vehicle are effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rack rail clamping vehicles, and specifically relates to a rack rail clamping vehicle, a drive unit and a swing frame assembly. Background Art

[0002] As a special equipment for long-distance transportation in coal mines, the rack rail car uses explosion-proof batteries or diesel engines as the power source, and realizes heavy-load transportation through the meshing transmission between the drive unit and the rack rail. Its body is equipped with a rail guide device, which can constrain the body to travel along the track. It has high anti-derailment safety in complex tunnel environments and is widely used in underground transportation operations of large equipment such as hydraulic supports.

[0003] The existing braking system of rack rail cars mainly includes two forms: one is the rotating shaft braking mechanism of the driving part (such as hydraulic motor, electric motor), which limits the torque of the driving shaft through the brake disc; the other is the disc friction brake implemented on the pin shaft wheel disc, which generates braking force by clamping the wheel disc through the caliper brake. The above braking methods all act on the rotating parts of the driving part itself.

[0004] In actual operation, especially when running on steeply inclined track sections, the existing braking system still has the risk of slipping and losing control. It is urgent to develop a safety braking device that is integrated with the drive unit and has an active track clamping function. Summary of the invention

[0005] The purpose of the present invention is to provide a swing frame assembly with a high-efficiency braking device to solve the problem of insufficient braking force of the rack rail vehicle in the prior art.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a swing frame assembly for a rack rail vehicle, running on a rack rail, the rack rail includes special-shaped rails arranged on its left and right sides, and the swing frame assembly includes:

[0007] A fixing seat, one end of which is fixedly connected to the body of the rack rail vehicle;

[0008] A swing frame, which is pivotally connected to the other end of the fixing seat via a hinge shaft;

[0009] A first roller and a second roller are arranged at intervals on one side of the swing frame along the length direction of the swing frame and are in rolling contact with the top surface of the special-shaped rail arranged on the corresponding side;

[0010] The first brake assembly and the second brake assembly are arranged at intervals on the other side of the swing frame along the length direction of the swing frame, and each of the brake assemblies includes:

[0011] a first brake pad and a second brake pad; and

[0012] A double-acting oil cylinder is connected to the first brake block and the second brake block at both ends respectively. The double-acting oil cylinder is configured such that when driving the first brake block and the second brake block to move away from each other, the first brake block is separated from the outer peripheral surface of the corresponding roller, and the second brake block is separated from the lower surface of the top plate of the corresponding special-shaped rail; when driving them to move closer to each other, the first brake block abuts against the outer peripheral surface of the corresponding roller, and the second brake block abuts against the lower surface of the top plate of the corresponding special-shaped rail.

[0013] In a possible embodiment, the double-acting oil cylinder includes:

[0014] A cylinder block;

[0015] A first piston rod and a second piston rod, which are movably arranged in the cylinder block, with their inner ends respectively connected to a first piston and a second piston, and their outer ends respectively connected to the first brake block and the second brake block;

[0016] The first piston and the second piston define an oil inlet chamber in the cylinder block; and

[0017] A first elastic member and a second elastic member, which are respectively sleeved on the first piston rod and the second piston rod, and are configured to drive the two piston rods to move towards each other when the oil inlet chamber is depressurized.

[0018] In a possible embodiment, both the first elastic member and the second elastic member are provided as compression springs.

[0019] In a possible embodiment, both the first elastic member and the second elastic member are provided as disc spring assemblies.

[0020] In a possible embodiment, the first brake block includes a first base body and a first brake pad. The first base body includes a fixing portion and an arc surface portion connected to the fixing portion. The arc surface portion is arranged directly above the corresponding roller; the arc surface portion has an arc-shaped contact surface adapted to the outer peripheral surface of the corresponding roller, and the shape of the first brake pad is adapted to the arc-shaped contact surface and is fixed to the lower part of the arc surface portion through fasteners; the fixing portion is fixedly connected to the end of the first piston rod.

[0021] In a possible embodiment, the second brake block includes a second base body fixed to the end of the second piston rod. One end of the second base body facing the special-shaped rail is located below the top plate of the special-shaped rail. A second brake pad is fixedly arranged on the second base body, and the second brake pad is used to abut against the lower surface of the top plate of the corresponding special-shaped rail.

[0022] In a possible embodiment, a guide wheel is rotatably connected below the second base body, and the outer peripheral surface of the guide wheel is in rolling contact with the web of the corresponding special-shaped rail.

[0023] In a possible embodiment, a rail-clamping wheel is connected to the middle position of the bottom of the swing frame, and the rail-clamping wheel is located below the top plate of the corresponding special-shaped rail and is used for rolling contact with the lower surface of the top plate of the special-shaped rail.

[0024] The present invention also provides a driving unit, comprising a mounting frame and at least two of the above-mentioned swing frame assemblies, wherein the swing frame assemblies are symmetrically arranged on both sides of the bottom of the mounting frame.

[0025] The present invention also provides a rack rail vehicle, including a cab and a drive assembly, wherein the cab and the drive assembly are connected to each other via a connecting rod, and the drive assembly includes a drive frame, on which at least one circular cavity is provided, and the above-mentioned drive unit is installed in the circular cavity.

[0026] The beneficial effects of the present invention are as follows: by integrating the brake assembly on the swing frame assembly, the brake assembly can synchronously act on the roller and the track to achieve bidirectional constraint, wherein the first brake block directly abuts against the lower surface of the top plate of the special-shaped rail to form a track locking effect, eliminating the risk of relative slip between the wheel and the rail; the second brake block clamps the outer peripheral surface of the roller, forcing the wheel to stop and blocking the transfer of kinetic energy. The first and second brake blocks synchronously abut against the track and the roller, and adopt a fail-safe structure with fast response speed and good braking effect. The brake assembly adopts a longitudinal arrangement with a small installation space, adopts positive pressure braking, has a large braking force, and has a good braking effect. At the same time, the structure is compact, and when the rack rail car passes through the turnout, it will not interfere with the turnout.

[0027] By installing the swing frame assembly on both sides of the bottom of the drive unit swing frame, the drive unit has three levels of braking at the same time. The first level is the self-brake of the drive unit drive component, the second level is the disc brake for braking the wheel disc of the drive unit, and the third level is a braking device arranged on the swing frame assembly for braking the track and roller at the same time. The three levels of braking can ensure the safe operation of the rack rail vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a swing frame assembly provided in one embodiment of the present invention.

[0029] Figure 2 A front view of a swing frame assembly provided in one embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the three-dimensional structure of the swing frame assembly provided by an embodiment of the present invention from another angle.

[0031] Figure 4 A schematic diagram of the three-dimensional structure of a brake assembly provided in one embodiment of the present invention.

[0032] Figure 5 A cross-sectional view of a double-acting cylinder provided in accordance with an embodiment of the present invention.

[0033] Figure 6 A three-dimensional structure diagram of a drive unit provided by an embodiment of the present invention.

[0034] Figure 7 A schematic diagram of two drive units provided by an embodiment of the present invention installed on a drive frame.

[0035] The text markings in the figure are as follows: 100, swing frame assembly; 110, fixed seat; 120, first braking assembly; 121, first braking block; 121a, arc surface part; 121b, fixing part; 121c, first brake block; 122, second braking block; 122a, second brake block; 122b, second base body; 123, double-acting oil cylinder; 123a, first elastic member; 123b, second elastic member; 123c, first piston rod; 123d, second piston rod; 123e, oil inlet cavity; 123f, first piston; 123g, second piston; 123h, cylinder block; 124, guide wheel; 130, second braking assembly; 140, roller assembly; 141, first roller; 142, second roller; 150, swing frame; 151, mounting plate; 160, rail clamping wheel; 170, hinge shaft; 200, tooth rail track; 210, rack; 220, special-shaped rail; 300, drive unit; 310, disc brake; 320, drive actuator; 330, pin shaft gear; 340, slider; 400, drive frame. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0037] As Figure 1 shown, this embodiment provides a swing frame assembly 100. The swing frame assembly 100 can be arranged on both sides of the bottom of the drive unit of the tooth rail trackless vehicle. The swing frame assembly 100 runs on the tooth rail track and can swing, so as to enable the tooth rail trackless vehicle to adapt to the changes in the track undulation.

[0038] Referring to Figures 1 - 3 , in some embodiments, the swing frame assembly 100 includes a fixed seat 110 and a swing frame 150. The upper end of the fixed seat 110 is fixed to the corresponding component of the tooth rail trackless vehicle by fasteners such as screws, and its lower end is provided with a hinge ear. A matching ear is correspondingly arranged in the middle of the swing frame 150. The hinge ear of the fixed seat 110 is pivotally connected to the matching ear through a hinge shaft 170. The swing frame 150 can swing around the axis of the hinge shaft 170, so as to adapt to the changes in the track undulation.

[0039] Referring to Figure 3 and Figure 6, a roller assembly 140 is provided on the swing frame 150. The roller assembly includes a first roller 141 and a second roller 142. Two roller mounting frames are arranged at intervals on one side in the length direction of the swing frame 150. The first roller 141 and the second roller 142 are respectively installed in the two roller mounting frames. The rolling surfaces of the rollers are used to rollingly contact the top surface of the special-shaped rail 220 on the corresponding side of the tooth-rail track 200. The special-shaped rail 220 is a special track and has a top plate extending outward.

[0040] Reference Figure 1 and Figure 2 , in some possible embodiments, a first braking assembly 120 and a second braking assembly 130 are further provided on the swing frame 150. The two braking assemblies are correspondingly arranged on the other side in the length direction of the swing frame 150 with the two rollers. Mounting frames for the braking assemblies are provided on the swing frame 150. The first braking assembly 120 and the second braking assembly 130 are fixedly installed in the corresponding mounting frames.

[0041] Reference Figure 1 , Figure 3 , Figure 4 and Figure 6 , in this embodiment, the first braking assembly 120 and the second braking assembly 130 have the same structure. Taking the first braking assembly 120 as an example, it includes a first brake block 121, a second brake block 122 and a double-acting oil cylinder 123. The first brake block 121 and the second brake block 122 are respectively connected to both ends of the double-acting oil cylinder 123. The double-acting oil cylinder 123 is used to drive the first brake block 121 and the second brake block 122 to move away from each other when the tooth-rail truck is in the working state, so as to separate the first brake block 121 from the outer peripheral surface of the first roller 141 and the second brake block 122 from the lower surface of the top plate of the special-shaped rail 220. In the failure state of the tooth-rail truck, that is, in the state of emergency safety braking or braking system failure, the double-acting oil cylinder 123 drives the first brake block 121 and the second brake block 122 to move closer to each other, so that the first brake block 121 abuts against the outer peripheral surface of the first roller 141 and the second brake block 122 abuts against the lower surface of the top plate of the special-shaped rail 220, realizing the braking of the rollers and the track. When the locomotive runs out of control, the two brake blocks are controlled by the double-acting oil cylinder 123 to brake the rail and the wheel at the same time, so as to quickly realize the braking of the locomotive and ensure the running safety. When the locomotive is working normally, the braking is released through the double-acting oil cylinder 123, so that the locomotive can pass normally.

[0042] Reference Figure 4 and Figure 5, the double-acting oil cylinder includes a cylinder block 123h. Inside the cylinder block 123h, a first piston rod 123c and a second piston rod 123d are oppositely arranged. The two piston rods are movably arranged inside the cylinder block 123h. At the inner end of the first piston rod 123c, a first piston 123f is provided. At the inner end of the second piston rod 123d, a second piston 123g is provided. The area inside the cylinder block 123h between the two pistons defines an oil inlet chamber 123e, and the oil inlet chamber 123e is filled with oil and returns oil through an oil inlet. A first elastic member 123a is sleeved on the rod body of the first piston rod 123c inside the cylinder block 123h, and a second elastic member 123b is sleeved on the rod body of the second piston rod 123d inside the cylinder block 123h. When the oil inlet chamber 123e is depressurized, the first elastic member 123a and the second elastic member 123b automatically drive the first piston rod 123c and the second piston rod 123d to retract, so that the first brake block 121 abuts against the outer peripheral surface of the first roller 141, and at the same time the second brake block 122 abuts against the lower surface of the top plate of the special-shaped rail, thereby realizing braking. The double-acting oil cylinder is a fail-safe structure, that is, when the driving device fails, it can still realize braking, and the double-acting oil cylinder can also be depressurized by an emergency braking button.

[0043] In some possible embodiments, both the first elastic member 123a and the second elastic member 123b are set as compression springs, and can be selected as a disc spring assembly or a helical compression spring. In this embodiment, a disc spring assembly is adopted. When the oil inlet chamber 123e is filled with oil, the disc spring assembly is compressed, and the two piston rods extend to release the brake. When the oil inlet chamber 123e is depressurized and returns oil (emergency braking or failure state), the disc spring assembly pushes the two pistons closer to each other under the action of elastic force, thereby pushing the two brake blocks closer to each other to realize braking.

[0044] Refer to Figure 4 and Figure 5 , taking the first braking assembly 120 as an example, the first brake block 121 includes a first base body and a first brake pad 121c. Among them, the first base body includes a fixing part 121b and an arc surface part 121a connected to the fixing part 121b, and the arc surface part 121a is arranged directly above the first roller 141. The arc surface part 121a has an arc-shaped contact surface adapted to the outer peripheral surface of the first roller 141. The shape of the first brake pad 121c is adapted to the arc-shaped contact surface and is fixed below the arc surface part 121a through fasteners such as screws. The fixing part 121b is fixedly connected to the end of the first piston rod 123c.

[0045] Continue to refer to Figure 4 and Figure 5, in some embodiments, the second brake block 122 includes a second base body 122b and a second brake pad 122a. The second base body 122b is fixedly connected to the end of the second piston rod 123d. One end of the second base body 122b facing the special-shaped rail is located below the top plate of the corresponding side special-shaped rail. The second brake pad 122a is fixed on the second base body 122b and is located directly below the top plate of the corresponding special-shaped rail. The second brake pad 122a is used to abut against the lower surface of the top plate of the special-shaped rail.

[0046] Continue to refer to Figure 4 , in some embodiments, a guide wheel 124 is rotatably connected below the second base body 122b. The outer peripheral surface of the guide wheel 124 is in rolling contact with the web of the special-shaped rail.

[0047] Refer to Figure 3 , in some embodiments, a rail clamping wheel 160 is connected to the bottom of the swing frame 150. Specifically, a mounting plate 151 is provided at the bottom of the swing frame 150. The rail clamping wheel 160 is rotatably connected to the mounting plate 151 through a rotating shaft. The outer peripheral surface of the rail clamping wheel 160 can be in contact with the lower surface of the top plate of the special-shaped rail. The rail clamping of the rack rail vehicle is realized through the action of the rail clamping wheel 160 to prevent the locomotive from tipping over.

[0048] By utilizing the structure of the swing frame assembly 100 itself to form a double longitudinal positive pressure braking form of the roller, the first brake block, the track and the second brake block, the space can be effectively utilized, the lateral dimension can be reduced, and the overall space layout of the swing frame assembly 100 can be made more compact, so that the rack rail vehicle can smoothly pass through the turnout.

[0049] Refer to Figure 6 , in some embodiments, a drive unit 300 is further provided. The drive unit 300 includes a mounting frame, on which a pin shaft gear 330, a drive actuator 320, a disc brake 310, etc. are mounted. The drive actuator 320 can be selected as a hydraulic motor or an electric motor. A planetary speed reducer is arranged in the middle of the pin shaft gear 330. The drive actuator 320 drives the planetary speed reducer and then drives the pin shaft gear 330 to rotate. The pin shaft gear 330 then cooperates with the rack 210 on the rack rail 200 to realize running on the rack rail 200.

[0050] In some possible implementation manners, a swing frame assembly 100 of the above embodiment is respectively arranged on opposite sides at the bottom of the mounting frame. Through the swing frame assembly 100, the drive unit can adapt to the undulation change of the track, and at the same time has good safety. In addition, the locomotive will not interfere with the turnout when passing through the turnout.

[0051] In other embodiments, a rack rail vehicle is further provided. The rack rail vehicle includes a drive unit assembly and a cab. The structure of the drive unit assembly is as Figure 7As shown, the drive unit assembly includes a drive frame 400, on which two circular cavities are arranged, and the above-mentioned drive unit 300 is installed in the circular cavity, and the drive unit 300 is rotated in the circular cavity by the slider 340 and the slide groove in the circular cavity. A control box can be arranged on the drive frame 400. The drive unit assembly is connected to adjacent components through a connecting rod, and cargo transportation is achieved by connecting a flatbed car. The rack rail track car equipped with the drive unit 300 can pass through the turnout smoothly, and the drive unit 300 is equipped with a three-level braking system. The first level braking is the rotating shaft braking mechanism of the driving actuator (such as a hydraulic motor, an electric motor); the second level braking is a disc friction braking implemented by the disc brake 310 on the pin shaft wheel disc; the third level is the rail and wheel braking implemented by the swing frame assembly 100, which makes it have good safety, especially when running in an inclined lane, it can reduce the occurrence of the risk of uncontrolled flying cars.

[0052] When this embodiment is used, during the operation of the rack rail vehicle, the swing frame assembly 100 is fixed to both sides of the drive unit through the fixed seat 110. The swing frame 150 is connected to the first hinged portion of the fixed seat 110 through the hinge shaft, allowing the swing frame 150 to swing freely around the axis of the hinge shaft. When the track is undulating or uneven, the swing frame 150 adjusts its angle adaptively according to the track shape to ensure that the roller assembly 140 maintains rolling contact with the top surface of the long top plate of the profiled rail 220, thereby smoothly transmitting the vehicle load and avoiding the risk of derailment.

[0053] When braking is required, the brake assembly drives the first brake block and the second brake block to move closer to each other, thereby achieving braking of the track and the roller. When braking is required, hydraulic oil is injected into the oil inlet chamber of the double-acting oil cylinder to drive the first brake block and the second brake block to move away from each other, thereby releasing the braking of the track and the roller.

[0054] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0055] In this article, specific examples are used to illustrate the principles and implementation modes of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation mode of the present invention. It should be noted that due to the limitation of literal expression, and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, retouches or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A swing frame assembly for a rack rail car running on a rack rail track, the rack rail track including special-shaped rails provided on its left and right sides, characterized in that, The swing frame assembly includes: A fixed seat, one end of which is fixedly connected to the vehicle body of the toothed rail clamping truck; A swing frame, which is pivotally connected to the other end of the fixed seat through a hinge shaft; A first roller and a second roller, which are arranged at intervals along the length direction of the swing frame on one side of the swing frame, and are in rolling contact with the top surface of the special-shaped rail arranged on the corresponding side; A first braking assembly and a second braking assembly, which are arranged at intervals along the length direction of the swing frame on the other side of the swing frame. Each braking assembly includes: A first brake block and a second brake block; and A double-acting oil cylinder, the two ends of which are respectively connected to the first brake block and the second brake block. The double-acting oil cylinder is configured such that when driving the first brake block and the second brake block to move away from each other, the first brake block is separated from the outer peripheral surface of the corresponding roller, and the second brake block is separated from the lower surface of the top plate of the corresponding special-shaped rail; when driving them to move closer to each other, the first brake block abuts against the outer peripheral surface of the corresponding roller, and the second brake block abuts against the lower surface of the top plate of the corresponding special-shaped rail.

2. The swing frame assembly according to claim 1, wherein The double-acting oil cylinder includes: A cylinder body; A first piston rod and a second piston rod, which are movably arranged in the cylinder body, the inner ends of which are respectively connected with a first piston and a second piston, and the outer ends of which are respectively connected with the first brake block and the second brake block; The first piston and the second piston define an oil inlet chamber in the cylinder body; and A first elastic member and a second elastic member, which are respectively sleeved on the first piston rod and the second piston rod, and are configured to drive the two piston rods to move towards each other when the oil inlet chamber is depressurized.

3. The swing frame assembly according to claim 2, characterized in that, Both the first elastic member and the second elastic member are arranged as compression springs.

4. The swing frame assembly according to claim 3, wherein Both the first elastic member and the second elastic member are arranged as disc spring assemblies.

5. The pendulum frame assembly according to claim 2, characterized in that The first brake block includes a first base body and a first brake pad. The first base body includes a fixing portion and an arc surface portion connected to the fixing portion. The arc surface portion is arranged directly above the corresponding roller; the arc surface portion has an arc-shaped contact surface adapted to the outer peripheral surface of the corresponding roller. The shape of the first brake pad is adapted to the arc-shaped contact surface and is fixed to the lower part of the arc surface portion through a fastener; the fixing portion is fixedly connected to the end of the first piston rod.

6. The swing frame assembly according to claim 2, wherein, The second brake block includes a second base body fixed to the end of the second piston rod. One end of the second base body facing the special-shaped rail is located below the top plate of the special-shaped rail. A second brake pad is fixedly arranged on the second base body, and the second brake pad is used to abut against the lower surface of the top plate of the corresponding special-shaped rail.

7. The swing frame assembly according to claim 6, characterized in that, A guide wheel is rotatably connected below the second base body, and the outer peripheral surface of the guide wheel is in rolling contact with the web of the corresponding special-shaped rail.

8. The swing frame assembly according to claim 1, characterized in that, A clamping rail wheel is connected to the middle position at the bottom of the swing frame. The clamping rail wheel is located below the top plate of the corresponding special-shaped rail and is used to rollingly contact the lower surface of the top plate of the special-shaped rail.

9. A drive unit, characterized in that, It includes a mounting frame and at least two swing frame assemblies as described in any one of claims 1 to 8. The swing frame assemblies are symmetrically arranged on both sides of the bottom of the mounting frame.

10. A rack pinion rail-bound vehicle, characterized in that, It includes a cab and a drive assembly. The cab and the drive assembly are interconnected by a connecting rod. The drive assembly includes a drive frame, and at least one circular cavity is provided on the drive frame. The drive unit described in claim 9 is installed in the circular cavity.

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