Brake shoe clearance adjuster for rail engineering vehicles

Abstract

The present invention provides a brake shoe clearance adjuster for rail engineering vehicles, comprising a supporting mechanism and an adjusting mechanism; the supporting mechanism comprises a connecting rod with a through hole in the middle; the adjusting mechanism comprises a guide sleeve that passes through the through hole and is welded to the connecting rod, an adjusting screw that passes through the guide sleeve at one end, a sliding sleeve that is threaded with the adjusting screw and one end is arranged in the guide sleeve, an adjusting nut that is arranged outside the guide sleeve and connected to one end of the adjusting screw away from the sliding sleeve, and a connecting block that is arranged at the other end of the sliding sleeve. Compared with the related art, the brake shoe clearance adjuster for rail engineering vehicles provided by the present invention has the following beneficial effects: through the brake shoe clearance adjuster, the operator only needs to adjust the brake shoe clearance through the adjusting nut at one end of the bogie, and it is convenient to complete the work of replacing the brake shoe, which can greatly reduce the labor intensity of the operator and extend the practical life of the brake shoe.

Description

Technical Field

[0001] The invention relates to the field of basic brake devices for rail engineering vehicles, and in particular to a brake shoe clearance adjuster for rail engineering vehicles. Background Art

[0002] Brake adjuster is the abbreviation of brake shoe clearance adjuster, which is used to adjust the distance between the train brake shoe and the wheelset, and is an important component of train braking.

[0003] The basic brake of rail engineering vehicles is mainly based on the lever-based basic brake device, and it does not have the function of automatic adjustment of brake shoe clearance. During the braking process of rail engineering vehicles, as the brake shoe wears, the brake shoe clearance gradually increases, resulting in a continuous increase in the brake cylinder bellows stroke. In order to maintain reliable braking force, it is necessary to frequently check the brake cylinder bellows stroke. When the brake cylinder bellows stroke exceeds the specified value, it is necessary to manually adjust the bellows stroke; for four-axle rail engineering vehicles, four adjustment rods need to be manually adjusted each time, which takes about half an hour. For railway engineering vehicles with a large number of trains, users adjust the brake cylinder bellows stroke once, which is labor-intensive. In addition, the wear and consumption of brake shoes are too fast, which also poses safety hazards and operating costs.

[0004] Therefore, it is necessary to provide a new brake shoe clearance adjuster for track engineering vehicles to solve the above technical problems. Summary of the invention

[0005] The technical problem solved by the invention is to provide a brake shoe clearance adjuster for rail engineering vehicles which has a more compact structure and is more convenient to install, use and maintain.

[0006] In order to solve the above technical problems, the brake shoe clearance adjuster for rail engineering vehicles provided by the present invention includes: a supporting mechanism and an adjusting mechanism; the supporting mechanism includes a connecting rod with a through hole in the middle; the adjusting mechanism includes a guide sleeve passing through the through hole and welded to the connecting rod, an adjusting screw passing through the guide sleeve at one end, a sliding sleeve threaded with the adjusting screw and one end of which is arranged in the guide sleeve, an adjusting nut arranged outside the guide sleeve and connected to one end of the adjusting screw away from the sliding sleeve, and a connecting block arranged at the other end of the sliding sleeve.

[0007] Preferably, the connecting block comprises a mounting hole, the other end of the sliding sleeve is inserted into the mounting hole and the two are fixed by welding.

[0008] Preferably, the supporting mechanism also includes two sliding tubes arranged in parallel and at intervals at both ends of the connecting rod, a first pin shaft penetrating the connecting block and arranged parallel to the connecting rod, and two sliders arranged at both ends of the first pin shaft and penetrating the sliding tube; the connecting block is arranged between the two sliding tubes through the first pin shaft and the slider, and the connecting block can make horizontal reciprocating movements along the setting direction of the sliding tube.

[0009] Preferably, the two sliding tubes are fixed to both ends of the connecting rod by pins respectively.

[0010] Preferably, the adjusting nut and the adjusting screw are fixed by a threaded conical pin.

[0011] Preferably, the adjustment mechanism also includes a stop block and a spring. The stop block is installed on the outer edge surface of one end of the guide sleeve adjacent to the adjusting nut through a second pin shaft, and can move radially along the second pin shaft. The spring connects the outer edge surface of the guide sleeve opposite to the second pin shaft and the stop block, providing a reset and closing function for the stop block after opening, so as to lock the adjusting nut.

[0012] Compared with the related art, the brake shoe clearance adjuster for rail engineering vehicles provided by the present invention has the following beneficial effects:

[0013] The present invention provides a brake shoe clearance adjuster for rail engineering vehicles, comprising a supporting mechanism and an adjusting mechanism; the supporting mechanism comprises a connecting rod with a through hole in the middle; the adjusting mechanism comprises a guide sleeve penetrating the through hole and welded to the connecting rod, an adjusting screw penetrating the guide sleeve at one end, a sliding sleeve screwed to the adjusting screw and arranged in the guide sleeve at one end, an adjusting nut arranged outside the guide sleeve and connected to one end of the adjusting screw away from the sliding sleeve, and a connecting block arranged at the other end of the sliding sleeve. Compared with the traditional brake shoe clearance adjustment method, the present invention is more convenient and simpler for operators to adjust the brake shoe clearance, can greatly reduce the labor intensity of operators, and is more convenient to install, use and maintain, thereby improving the efficiency of vehicle maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of an adjustment mechanism of a first embodiment of a brake shoe clearance adjuster for a rail engineering vehicle provided by the present invention;

[0015] Figure 2 A schematic structural diagram of a first embodiment of a brake shoe clearance adjuster for a rail engineering vehicle provided by the present invention;

[0016] Figure 3 A structural diagram of the use state of the brake shoe clearance adjuster for a rail engineering vehicle provided by the present invention;

[0017] Figure 4 A structural schematic diagram of a second embodiment of a brake shoe clearance adjuster for a rail engineering vehicle provided by the present invention;

[0018] Figure 5 A cross-sectional view of the heat dissipation mechanism structure of the second embodiment of the brake shoe clearance adjuster for rail engineering vehicles provided by the present invention;

[0019] Figure 6 A cross-sectional view of the brake shoe of Embodiment 2 of the brake shoe clearance adjuster for rail engineering vehicles provided by the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Embodiment 1

[0022] Please refer to Figure 1 and Figure 2 ,in, Figure 1 A schematic structural diagram of an adjustment mechanism of a preferred embodiment of a brake shoe clearance adjuster for a rail engineering vehicle provided by the present invention; Figure 2 The present invention is a schematic structural diagram of a preferred embodiment of a brake shoe clearance adjuster for a rail engineering vehicle provided by the present invention. The brake shoe clearance adjuster for a rail engineering vehicle provided by the present invention comprises a supporting mechanism and an adjusting mechanism.

[0023] The supporting mechanism includes a connecting rod 2 with a through hole in the middle, two sliding tubes 12 arranged in parallel and spaced apart at both ends of the connecting rod 2, a first pin shaft 13 penetrating the connecting block 11 and arranged parallel to the connecting rod 2, and two sliding blocks 14 arranged on the first pin shaft and penetrating the sliding tube 12; the connecting block 11 is arranged between the two sliding tubes 12 through the first pin shaft 13 and the sliding block 14.

[0024] The adjustment mechanism includes a guide sleeve 3 passing through the through hole and welded to the connecting rod 2, an adjusting screw 9 passing through the guide sleeve 3 at one end, a sliding sleeve 10 threadedly connected to the adjusting screw 9 and with one end arranged in the guide sleeve 3, an adjusting nut 7 arranged outside the guide sleeve 3 and connected to one end of the adjusting screw 9 away from the sliding sleeve 10, a connecting block 11 arranged at the other end of the sliding sleeve 10, a stop block 5 and a spring 8.

[0025] The connecting block 11 includes a mounting hole, and the other end of the sliding sleeve 10 is inserted into the mounting hole and the two are fixed by welding.

[0026] The connecting block 11 can perform horizontal reciprocating movement along the setting direction of the sliding tube 12 .

[0027] The stop block 5 is installed on the outer edge surface of one end of the guide sleeve 3 adjacent to the adjusting nut 7 through the second pin shaft 6, and can move radially along the second pin shaft 6. The spring 8 connects the outer edge surface of the guide sleeve 3 opposite to the second pin shaft 6 and the stop block 5, providing a reset closing function for the stop block 5 after opening, so as to lock the adjusting nut 7.

[0028] The two sliding pipes 12 are fixed to the two ends of the connecting rod 2 through pins 1 respectively.

[0029] The adjusting nut 7 and the adjusting screw 9 are fixed by a threaded conical pin 4 .

[0030] The working principle of the brake shoe clearance adjuster for rail engineering vehicles provided by the present invention is as follows: Figure 3 , which is a structural diagram of the brake shoe clearance adjuster for rail engineering vehicles provided by the present invention in use state. The brake shoe clearance adjuster can drive the adjusting screw 9 to rotate by rotating the adjusting nut 7, and the sliding sleeve 10 threadedly connected thereto drives the connecting block 11 to move forward and backward horizontally, and adjusts the distance L between the two brake shoe suspension rods in both directions at the same time, thereby achieving the purpose of adjusting the brake shoe clearance.

[0031] Embodiment 2

[0032] This embodiment is based on the first embodiment, and a cooling system is provided. Figures 4 to 6 , including a first liquid storage box body 15 and a second liquid storage box body 16 which are arranged inside the side of the sliding sleeve 10 away from the adjusting screw 9.

[0033] The first liquid storage tank body 15 includes a first micro pump 151 arranged therein, an L-shaped first liquid outlet pipe 152 connected to the first micro pump 151 and passing through the sleeve 10, a liquid spray port 153 connected to the first liquid outlet pipe 152 and arranged at the top of the brake shoe 17, and a first liquid inlet and exhaust port 154 arranged adjacent to the first liquid outlet pipe 152 and connected to the first liquid storage tank body 15.

[0034] The second liquid storage tank 16 includes a second micro pump 161 disposed therein, a second liquid outlet pipe 162 connected to the second micro pump 161 and passing through the sleeve 10 and connected to the bottom end of the brake shoe 17 , and a second liquid inlet and outlet port 163 disposed adjacent to the second liquid outlet pipe 162 and connected to the second liquid storage tank 16 .

[0035] The brake shoe support plate 18 includes two protrusions 181, and self-resetting switches are respectively embedded in the tops of the two protrusions 181. The two self-resetting switches are respectively electrically connected to the first micro pump 151 and the second micro pump 161, and control the opening and closing of the first micro pump 151 and the second micro pump 161. The first micro pump 151 and the second micro pump 161 are powered by a rail car power supply. The rail car power supply can pass through the top walls of the first liquid storage tank 15 and the second liquid storage tank 16, and be connected to the micro pumps, and then the self-resetting switches are connected in series through wires.

[0036] The brake shoe 17 is hollow inside and has a plurality of metal spheres 171 disposed therein. The inner cavity of the metal sphere 171 is connected to the second liquid outlet pipe 162 .

[0037] In this embodiment, the liquid stored in the first liquid storage box 15 is water, the first liquid outlet pipe 152 is a stainless steel pipe, the liquid stored in the second liquid storage box 16 is alcohol, and the second liquid outlet pipe 162 is a silicone tube.

[0038] When the rail engineering vehicle is braking, the brake shoe 17 is reversely pressed downward by the pressure of the wheel, and the two protrusions 181 of the brake shoe support plate 18 supporting the brake shoe 17 are subjected to the pressure from the brake shoe 17. At the same time, both self-resetting switches are pressed downward to turn on the first micro pump 151 and the second micro pump 161. The first micro pump 151 and the second micro pump 161 extract water and alcohol from the first liquid storage tank 15 and the second liquid storage tank 16 respectively, and the water is sprayed on the surface of the brake shoe 17 through the liquid spray port 153. The alcohol enters the interior of the brake shoe 17 through the second liquid outlet pipe 162, covers the surface of the metal sphere 171, and then flows back into the second liquid storage tank 16 to cool the brake shoe 17.

[0039] When the brake is stopped, the self-resetting switch is reset, and the first micro pump 151 and the second micro pump 161 are turned off and stop working.

[0040] The first liquid inlet and outlet port 154 and the second liquid inlet and outlet port 163 are used to replenish water and alcohol, and the second liquid inlet and outlet port 163 is also used for alcohol volatilization and heat dissipation. The metal sphere 171 can increase the surface area, increase the contact surface with alcohol, improve the cooling effect, and improve the strength of the brake shoe 17, thereby improving the practical life of the brake shoe 17.

[0041] Compared with the related art, the brake shoe clearance adjuster for rail engineering vehicles provided by the present invention has the following beneficial effects: through the brake shoe clearance adjuster, the operator can easily adjust the brake shoe clearance and facilitate the work of replacing the brake shoe by only adjusting the nut at one end of the bogie, which can greatly reduce the labor intensity of the operators and extend the practical life of the brake shoe.

[0042] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A brake shoe clearance adjuster for a rail engineering vehicle, characterized in that: include: The cam is an adjustable shaft, and the adjustable shaft is a plurality of adjustable springs, each of which is a plurality of adjustable springs having a plurality of adjustment members, each of which is a plurality of adjustment members. The plurality of adjustment members are each a plurality of adjustment members, each of which is a plurality of adjustment members. Two sliders passing through the sliding tube; the connecting block is arranged between the two sliding tubes through a first pin shaft and a slider, and the connecting block can make horizontal reciprocating movements along the setting direction of the sliding tube; the two sliding tubes are respectively fixed to the two ends of the connecting rod by pins; the adjusting nut and the adjusting screw are fixed by a threaded conical pin; the adjustment mechanism also includes a stop block and a spring, the stop block is installed on the outer edge surface of one end of the guide sleeve adjacent to the adjusting nut through a second pin shaft, and it can make radial movement along the second pin shaft, the spring connects the outer edge surface of the guide sleeve opposite to the second pin shaft and the stop block, and provides a reset and closing function of the stop block after opening, so as to lock the adjusting nut.

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