Flat car for rail transit and brake device thereof

Abstract

The application discloses a flat car for rail transit and a brake device thereof, and belongs to the field of rail transit. The brake device comprises an operating rod, a brake mechanism, a locking clamp, a buckle, a locking clamp connecting piece, a locking clamp driving piece, a first reset mechanism and a second reset mechanism. The operating rod is connected with the brake mechanism through a first connecting rod, and the brake mechanism is arranged close to a wheel. The first end of the locking clamp connecting piece is connected with the locking clamp, and the second end of the locking clamp connecting piece is connected with the locking clamp driving piece. The locking clamp is provided with a notch, the notch can be locked in cooperation with the buckle or can be separated from the buckle. The buckle is arranged on a first support. When the notch is buckled with the buckle, the brake device is in a locked state. When the notch is not buckled with the buckle, the brake device is in an unlocked state. The flat car for rail transit and the brake device thereof can improve the safety of the flat car, guarantee the safety of the staff and improve the work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of braking device technology, and relates to a braking device, and more particularly to a flatbed car for rail transit and its braking device. Background Technology

[0002] The laying of optical fiber cables in rail transit sections involves a large amount of work, and the progress of this part of the construction affects the smooth opening of the entire rail transit project. In order to speed up the construction process and improve convenience, the use of flatbed trucks for laying optical fiber cables has become an indispensable construction tool. Through investigation of the existing flatbed trucks used in rail transit, it was found that the existing flatbed trucks lack braking devices and are all manually braked, posing safety hazards and failing to meet the new safety production regulations.

[0003] When the flatbed truck needs to stop while it is moving forward, the construction workers use manual braking and pull the flatbed truck to stop its movement.

[0004] The existing technology has the following defects: (1) Manual braking is easy to cause construction workers to fall and cause great safety hazards; (2) Manual braking has poor braking effect and long braking distance; (3) Manual braking requires high physical fitness of construction workers.

[0005] In view of this, there is an urgent need to design a new flatbed truck for rail transit construction in order to overcome at least some of the aforementioned defects of existing flatbed trucks. Summary of the Invention

[0006] This invention provides a flatbed car for rail transit and its braking device, which can improve the safety of the flatbed car operation, ensure the safety of the staff, and improve work efficiency.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the following technical solution is adopted:

[0008] A braking device for a flatbed car used in rail transit, the braking device comprising: an operating lever, a braking mechanism, a locking clip, a buckle, a locking clip connector, a locking clip drive, a first reset mechanism, and a second reset mechanism;

[0009] The operating lever is provided with a first rotating shaft, and the operating lever can be rotated through the first rotating shaft; the operating lever is connected to the braking mechanism through a first connecting rod, and the braking mechanism is located close to the wheel;

[0010] When the operating lever is in the first state, the braking mechanism is not in contact with the wheel; when the operating lever is in the second state, the braking mechanism is in contact with the wheel.

[0011] The first end of the locking card connector is connected to the locking card, and the second end of the locking card connector is connected to the locking card driver.

[0012] The locking clip has a notch, which can engage with the buckle for locking and can also disengage from the buckle; the buckle is mounted on a first bracket; when the notch engages with the buckle, the braking device is in a locked state; when the notch does not engage with the buckle, the braking device is in an unlocked state.

[0013] The first reset mechanism is connected to the braking mechanism, and when the braking device is in an unlocked state, the first reset mechanism can reset the braking mechanism;

[0014] The first end of the second reset mechanism is connected to a second bracket, and the second end of the second reset mechanism is connected to the locking clip.

[0015] In one embodiment of the present invention, the locking clip connector includes a second link and a manual operating mechanism, wherein the manual operating mechanism is rotatably disposed at the second end of the operating lever via a second rotating shaft; the first rotating shaft is disposed at the first end of the operating lever.

[0016] The second link and the second reset mechanism are respectively disposed on both sides of the locking member; when the manual operating mechanism is in the first posture, the locking member is pulled by the second link; when the manual operating mechanism is in the second posture, the locking member is reset by the reset force of the second reset mechanism.

[0017] In one embodiment of the present invention, the manual operating mechanism is L-shaped or 7-shaped; the manual operating mechanism includes a first rod and a second rod, the second end of the first rod is connected to the first end of the second rod, and the second rotating shaft is provided at the connection between the first rod and the second rod;

[0018] The second end of the second rod is provided with a first through hole, which is used to fix the first end of the second connecting rod; the locking clip is provided with a second through hole in the middle of one side, and the second end of the second connecting rod is fixed to the second through hole.

[0019] In one embodiment of the present invention, the braking mechanism has a semi-circular cross-section and the braking mechanism covers half of the wheel.

[0020] In one embodiment of the present invention, the first bracket and the second bracket are the same bracket.

[0021] In one embodiment of the present invention, the wheel axles of the flatbed truck are mounted on a third frame, and the third frame can be integrated with the first and second frames.

[0022] In one embodiment of the present invention, the first end of the braking mechanism is rotatably mounted on the flatbed vehicle, and the second end of the braking mechanism is connected to the first connecting rod and the first reset mechanism.

[0023] In one embodiment of the present invention, the first reset mechanism and the second reset mechanism are reset springs.

[0024] According to another aspect of the present invention, the following technical solution is adopted: a flatbed car for rail transit, the flatbed car including the above-mentioned braking device for the flatbed car for rail transit.

[0025] The beneficial effects of this invention are as follows: The flatbed car and its braking device for rail transit proposed in this invention effectively solve the problem caused by the lack of braking devices on flatbed cars in rail transit sections. This device is reliable, easy to manufacture and operate, and its relevant safety performance meets safety regulations, thus compensating for the safety management deficiencies associated with using flatbed cars. It can reduce the workload of workers, improve work efficiency, and reduce the number of workers required for projects, saving labor costs. Furthermore, this invention can improve the efficiency of cable laying in rail transit sections, ensure construction safety, and guarantee the progress of fiber optic cable laying in rail transit sections. With the rapid development of rail transit, this device has broad application prospects in the use of flatbed cars in rail transit sections. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a flatbed truck braking device for rail transit in one embodiment of the present invention. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] To further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, and not for limiting the scope of the claims of the present invention.

[0029] The description in this section pertains to only a few typical embodiments, and the present invention is not limited to the scope of the embodiments described. Substitution of identical or similar prior art methods with some technical features in the embodiments is also within the scope of the description and protection of this invention.

[0030] The term "connection" in the instruction manual includes both direct and indirect connections.

[0031] This invention discloses a braking device for a flatbed railcar. Figure 1 This is a schematic diagram of the braking device for a flatbed railcar in one embodiment of the present invention; please refer to [link / reference]. Figure 1The braking device includes: an operating lever 1, a braking mechanism 2, a locking clip 5, a buckle 4, a locking clip connector, a locking clip drive 6, a first reset mechanism 9, and a second reset mechanism 8; the first reset mechanism 9 and the second reset mechanism 8 can be reset springs.

[0032] The operating lever 1 is provided with a first rotating shaft 101, through which the operating lever 1 can rotate; the operating lever 1 is connected to the braking mechanism 2 via a first connecting rod 12, and the braking mechanism 2 is located near the wheels 3 of the flatbed truck. When the operating lever 1 is in a first state (e.g., when the operating lever 1 is pressed down and the braking device is unlocked), the braking mechanism 2 is not in contact with the wheels 3; when the operating lever 1 is in a second state (e.g., when the operating lever 1 is not pressed down, or when the braking device is locked), the braking mechanism 2 is in contact with the wheels 3.

[0033] The first end of the locking clip connector 7 is connected to the locking clip 5, and the second end of the locking clip connector is connected to the locking clip drive 6. The locking clip 5 has a notch 501, which can engage with the buckle 4 for locking and can also disengage from the buckle 4; the buckle 4 is disposed on a first bracket 10; when the notch 501 engages with the buckle 4, the braking device is in a locked state; when the notch 501 does not engage with the buckle 4, the braking device is in an unlocked state.

[0034] The first reset mechanism 9 is connected to the braking mechanism 2. When the braking device is in an unlocked state, the first reset mechanism 9 can reset the braking mechanism 2. The first end of the second reset mechanism 8 is connected to a second bracket (the second bracket and the first bracket can be the same bracket), and the second end of the second reset mechanism 8 is connected to the locking clip.

[0035] The axle of the wheel 3 of the flatbed can be set on a third frame 11, and the third frame 11 can be integrated with the first frame 10 and the second frame.

[0036] In one embodiment of the present invention, the locking clip connector includes a second link 7 and a manual operating mechanism 6. The manual operating mechanism 6 is rotatably disposed on the second end of the operating lever 1 via a second rotating shaft 601. The first end of the operating lever 1 is provided with the first rotating shaft 101.

[0037] The second link 7 and the second reset mechanism 8 are respectively disposed on both sides of the locking member 5; when the manual operating mechanism 6 is in the first posture, the locking member 5 is pulled by the second link 7; when the manual operating mechanism 6 is in the second posture, the locking member 5 is reset by the reset force of the second reset mechanism 8.

[0038] In one embodiment, the manual operating mechanism 6 is L-shaped or 7-shaped; the manual operating mechanism 6 includes a first rod and a second rod, the second end of the first rod is connected to the first end of the second rod, and a second rotating shaft 601 is provided at the connection between the first rod and the second rod. The second end of the second rod is provided with a first through hole, which is used to fix the first end of the second connecting rod 7; the locking clip 5 is provided with a second through hole in the middle of one side, and the second end of the second connecting rod 7 is fixed to the second through hole.

[0039] The braking mechanism 2 has a semi-circular cross-section and encloses half of the wheel 3. The first end 201 of the braking mechanism 2 is rotatably mounted on the flatbed vehicle, and the second end 202 of the braking mechanism is connected to the first connecting rod 12 and the first reset mechanism 8.

[0040] The present invention also discloses a flatbed car for rail transit, the flatbed car including the above-mentioned braking device for rail transit flatbed car.

[0041] When using the braking device of this invention, when the operator needs to brake, they can press down the operating lever and hold the operating mechanism, thereby making the braking mechanism contact the wheel and simultaneously locking the notch of the locking clip. If it is necessary to maintain the locked state of the braking device, the notch of the locking clip can be kept locked. When it is necessary to unlock the braking device, the operating mechanism can be held manually again. At this time, the notch of the locking clip disengages from the clip, and the braking mechanism is simultaneously lifted under the reset force of the first reset mechanism, and the braking device is in the unlocked state.

[0042] In one application scenario of the present invention, the manual disc brake device of the present invention mainly includes an operating lever, a brake pad, a limiter, and a return spring.

[0043] Based on the design drawings and material selection, 40*40*4mm square steel, rubber pads, and compression springs (10*20*200) were chosen as the main materials, and the overall component processing plan was broken down.

[0044] (1) The operating lever is the main component of the manual disc brake device. This component is the direct contact point for construction personnel. Therefore, the group members believe that only the following four conditions can be used as the selection scheme: practicality: small size, light weight, easy to use; safety: convenient operation, good safety; stability: the profile is not easily deformed, and the stability is good; economy: simple materials and low processing difficulty.

[0045] (2) As one of the key components of the manual disc brake device, the brake pad directly acts on the flatbed wheel and is crucial to the braking effect. Therefore, the group members believe that only if the following four conditions are met can it be selected as a solution: practicality: high coefficient of friction, durable and not easy to wear; safety: easy to install and will not damage the flatbed wheel; stability: firmly fixed and not easy to loosen; economy: simple materials and easy to process.

[0046] (3) As one of the key components of the manual disc brake device, the limiter can make the brake pads in close contact with the flatbed wheel, so that the flatbed can keep the brake. Therefore, the group members believe that only if the following four conditions are met can it be selected as a solution: practicality: simple function and high limit success rate; safety: easy to install and will not damage the flatbed wheel; stability: sturdy and durable and not easy to be damaged; economy: simple materials and low processing difficulty.

[0047] (4) The return spring is one of the key parts of the manual disc brake device. When braking is not required, the return spring can reset the operating lever and disengage the brake pad from the flatbed wheel, allowing the flatbed to drive normally. Therefore, the group members believe that only if the following four conditions are met can it be selected as a solution: practicality: strong elasticity, durability, and not easy to wear; safety: easy to install and will not damage the flatbed wheel; stability: firmly fixed and not easy to loosen; economy: simple materials and low cost.

[0048] According to the drawings, the operating lever, brake pad, limiter, and return spring were machined and assembled on the flatbed truck. Through multiple braking tests, the manual disc brake device was verified to be easy to operate, stable, and reliable.

[0049] In summary, the flatbed car and its braking device for rail transit proposed in this invention effectively solve the problem caused by the lack of braking devices on flatbed cars in rail transit sections. This device is reliable, easy to manufacture and operate, and its relevant safety performance meets safety regulations, thus compensating for the safety management deficiencies associated with using flatbed cars. It can reduce worker workload, improve work efficiency, and simultaneously reduce the number of workers required for projects, saving labor costs. Furthermore, this invention can improve the efficiency of cable laying in rail transit sections, ensure construction safety, and guarantee the progress of fiber optic cable laying in rail transit sections. With the rapid development of rail transit, this device has broad application prospects in the use of flatbed cars in rail transit sections.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The description and application of the present invention herein are illustrative and not intended to limit the scope of the invention to the embodiments described above. Effects or advantages involved in the embodiments may not be apparent due to various factors, and the description of effects or advantages is not intended to limit the embodiments. Variations and modifications of the embodiments disclosed herein are possible, and various substitutions and equivalents of the components in the embodiments are well known to those skilled in the art. It should be apparent to those skilled in the art that the invention can be implemented in other forms, structures, arrangements, proportions, and with other components, materials, and parts without departing from the spirit or essential characteristics of the invention. Other variations and modifications can be made to the embodiments disclosed herein without departing from the scope and spirit of the invention.

Claims

1. A braking device for a flatbed railcar, characterized in that, The braking device includes: an operating lever, a braking mechanism, a locking clip, a buckle, a locking clip connector, a locking clip drive, a first reset mechanism, and a second reset mechanism; The operating lever is provided with a first rotating shaft, and the operating lever can be rotated through the first rotating shaft; the operating lever is connected to the braking mechanism through a first connecting rod, and the braking mechanism is located close to the wheel; When the operating lever is in the first state, the braking mechanism is not in contact with the wheel; when the operating lever is in the second state, the braking mechanism is in contact with the wheel. The first end of the locking card connector is connected to the locking card, and the second end of the locking card connector is connected to the locking card driver. The locking clip has a notch, which can engage with the buckle for locking or disengagement; the buckle is mounted on a first bracket; when the notch engages with the buckle, the braking device is in a locked state; when the notch does not engage with the buckle, the braking device is in an unlocked state. The first reset mechanism is connected to the braking mechanism, and when the braking device is in an unlocked state, the first reset mechanism can reset the braking mechanism; The first end of the second reset mechanism is connected to a second bracket, and the second end of the second reset mechanism is connected to the locking clip; The locking mechanism drive is rotatably mounted on the second end of the operating lever via a second rotating shaft; the first end of the operating lever is provided with the first rotating shaft; The locking card connector and the second reset mechanism are respectively disposed on both sides of the locking card; when the locking card drive is in the first position, the locking card is pulled by the locking card connector; when the locking card drive is in the second position, the locking card is reset by the reset force of the second reset mechanism. The locking mechanism drive is L-shaped or 7-shaped; the locking mechanism drive includes a first rod and a second rod, the second end of the first rod is connected to the first end of the second rod, and the second rotation shaft is provided at the connection between the first rod and the second rod. The second end of the second rod is provided with a first through hole, which is used to fix the first end of the locking clip connector; the middle part of one side of the locking clip is provided with a second through hole, and the second end of the locking clip connector is fixed to the second through hole.

2. The braking device for a flatbed railcar according to claim 1, characterized in that: The braking mechanism has a semi-circular cross-section and encloses half of the wheel.

3. The braking device for a flatbed railcar according to claim 1, characterized in that: The first bracket and the second bracket are the same bracket.

4. The braking device for a flatbed railcar according to claim 1, characterized in that: The wheels of the flatbed truck are mounted on a third frame, which is an integrated design with the first and second frames.

5. The braking device for a flatbed car used in rail transit according to claim 1, characterized in that: The first end of the braking mechanism is rotatably mounted on the flatbed vehicle, and the second end of the braking mechanism is connected to the first connecting rod and the first reset mechanism.

6. The braking device for a flatbed car in rail transit according to claim 1, characterized in that: The first reset mechanism and the second reset mechanism are reset springs.

7. A flatbed vehicle for rail transit, characterized in that: The flatbed vehicle includes the braking device for a rail transit flatbed vehicle as described in any one of claims 1 to 6.

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