Brake shoe stack adjuster testing device

Abstract

The utility model relates to a brake shoe stack adjuster testing device which comprises a rack, a support A and a support B are respectively arranged at the left position and the right position of the upper surface of the rack, the support A is fixed on a support lug, the support lug is fixed on the left side face of the rack, a brake shoe stack adjuster is arranged between the support A and the support B, a telescopic shaft at the right end of the brake shoe stack adjuster is arranged on the support B in a penetrating mode, and the telescopic shaft is fixed on the left side face of the rack. A positioning pull rod is fixed to the support A and connected with an unlocking switch, close to the left end, of the brake shoe stack adjuster. One end of the transmission lever is hinged to the left end of the brake shoe device, the middle of the transmission lever is hinged to the kidney-shaped hole A of the supporting lug through a rotating shaft, the other end of the transmission lever is hinged to the output end of an air cylinder, the tail of the air cylinder is hinged to a support C, and the support C is fixed to the rack. The brake shoe stack adjuster measuring device has the advantages of being simple in structure, low in cost and capable of measuring multiple parameters such as the extension amount, the retraction amount (or called contraction amount), the adjusting precision, the sensitivity, the tension value and the pressure value of a brake shoe stack adjuster.

Description

Technical Field

[0001] The utility model relates to the technical field of railway passenger car component performance test devices, in particular to a brake regulator test device. Background Art

[0002] When a train is running, tread braking is often used. During the braking process, the wear of the brake shoe will cause the gap between the brake shoe and the wheel to increase, causing the brake cylinder piston to become too long, thereby reducing the braking force of the vehicle and extending the braking distance.

[0003] If the train is not equipped with a brake adjuster, in order to ensure safety, the train inspection personnel are required to manually adjust the position of the round pin holes of the positioning rods of the vehicle's basic braking device to keep the brake cylinder piston stroke within the specified range.

[0004] If the train is equipped with a brake adjuster (or brake shoe clearance automatic adjuster), the following functions can be achieved: (1) When the brake shoe clearance changes, the brake adjuster can automatically adjust the piston stroke of the brake piston cylinder to remain within the specified range, keeping the clearance between the brake shoe and the wheel normal, and ensuring that the vehicle braking force does not decay; (2) The brake cylinder piston stroke of each vehicle in the train can be automatically kept close to the same, reducing the longitudinal dynamic effect of the train and reducing the impact of the train.

[0005] Since the China Railway Corporation promulgated TJ / CL335-2014 "Performance Test Method for Automatic Adjuster of Bidirectional Gap of Railway Freight Cars", various types of brake regulator test devices have appeared on the market, but their structures are relatively complex and the costs are relatively high.

[0006] To this end, our company designed a gate regulator experimental device to simplify the structure and reduce costs. Utility Model Content

[0007] The utility model aims to overcome the shortcomings of the prior art and provides a brake regulator testing device.

[0008] The purpose of the utility model is achieved through the following technical solutions: a brake regulator test device, comprising:

[0009] The frame is provided with a support A and a support B at the left and right positions of the upper surface of the frame, respectively. The support A is fixed on the support ear, and the support ear is fixed on the left side of the frame. A brake adjuster is provided between the support A and the support B, wherein a telescopic shaft at the right end of the brake adjuster is passed through the support B, and a positioning rod is fixed on the support A, and the positioning rod is connected to an unlocking switch near the left end of the brake adjuster;

[0010] Transmission lever, one end of the transmission lever is hinged to the left end of the brake adjuster, the middle part of the transmission lever is hinged to the waist-shaped hole A of the support ear through the rotating shaft, the other end of the transmission lever is hinged to the output end of the cylinder, the tail of the cylinder is hinged to the support C, and the support C is fixed to the frame;

[0011] When the output end of the cylinder extends out, the force is transmitted to the gate adjuster through the transmission lever, causing the gate adjuster to move a certain distance. When the gate adjuster moves, the unlocking switch is opened under the action of the positioning rod, and the telescopic shaft of the gate adjuster extends outward. The telescopic shaft moves on the support B to realize the measurement of the extension amount of the gate adjuster.

[0012] As a preferred technical solution of the present application, a force sensor is fixed on the support C, and the tail of the cylinder is hinged on the force sensor; the output end of the brake regulator is connected to the travel push rod, and the travel push rod passes through the support B; an adjustment lock block that can be fixed and loosened is sleeved on the travel push rod;

[0013] When the adjustment lock block is fixed on the stroke push rod and the adjustment lock block is against the left side of the support B, if the telescopic shaft of the gate adjuster extends outward and the length of the cylinder remains unchanged, pressure is applied to the force sensor to achieve the pressure value measurement of the gate adjuster;

[0014] When the adjustment lock block is fixed on the stroke push rod and the adjustment lock block is against the right side of the support B, if the telescopic shaft of the gate adjuster retracts inward and the length of the cylinder remains unchanged, a pulling force is applied to the force sensor to measure the pulling force value of the gate adjuster.

[0015] As a preferred technical solution of the present application, the right end and the left end of the gate adjuster are supported by a support B and a transmission lever respectively; the gate adjuster tends to be horizontally arranged, the transmission lever tends to be vertically arranged, and the cylinder is horizontally arranged.

[0016] As a preferred technical solution of the present application, a sliding sleeve is fixed on the support B, and the output shaft of the brake regulator slides through the sliding sleeve.

[0017] As a preferred technical solution of the present application, the frame has a base plate, a support C is fixed on the base plate, a force sensor is fixed on the left side of the support C, and the left end of the force sensor is hinged to the cylinder; the cylinder is connected to the air source valve group.

[0018] As the preferred technical solution of the application, a horizontal positioning rod is fixed on the support A, and a waist-shaped hole B is provided on the unlocking switch. The unlocking switch is passed through the positioning rod through the waist-shaped hole B, and a positioning nut is screwed on the positioning rod. The positioning nut blocks the unlocking switch from the side; when the cylinder is actuated, the gate adjuster is displaced through the transmission lever, and the positioning nut and the unlocking switch generate a force, so that the unlocking switch opens the gate adjuster.

[0019] As a preferred technical solution of the present application, the positioning nut can adjust the position on the positioning rod.

[0020] The utility model has the following advantages:

[0021] The structure is simple and the cost is low. It only needs cylinder, transmission lever, positioning rod, travel push rod, force sensor and other parts. The price cost of these parts is very low, and the whole structure is very simple.

[0022] Through a low-cost simple structure, it is possible to measure multiple parameters of the gate adjuster, including extension, retraction (or contraction), adjustment accuracy, sensitivity, tension value, and pressure value (compared to the complex devices and complex measurement methods on the market, this solution has low cost and simple measurement). BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the principle of the utility model;

[0025] In the figure: 1-frame, 2-cylinder, 3-transmission lever, 4-positioning pull rod, 5-brake regulator, 6-air source valve group, 7-travel push rod, 8-adjustment lock block, 9-sliding sleeve, 11-force sensor. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0027] It should be noted that the directions or positional relationships indicated by "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0029] like Figure 1 and Figure 2 As shown, a brake regulator test device proposed in this embodiment includes a frame 1 and a transmission lever 3;

[0030] A support ear is fixed on the left side of the frame 1, a support A in a vertical direction is fixed on the upper surface of the support ear, and a support B is fixed on the right part of the upper surface of the frame 1;

[0031] A horizontally placed gate regulator 5 is provided between the support A and the support B;

[0032] When the gate adjuster 5 is installed, its right end is a telescopic shaft (or telescopic part), which is fixedly connected to the left end of the horizontally arranged travel push rod 7. The right end of the travel push rod 7 passes through the support B, and the push rod 7 can slide left and right on the support B.

[0033] The left end of the brake regulator 5 is hinged to the upper end of the transmission lever 3. The transmission lever 3 is bent and tends to be vertically arranged. The middle part of the transmission lever 3 has a rotating shaft, which is hingedly inserted into the horizontal waist-shaped hole A on the support ear. The lower end of the transmission lever 3 is hinged to the output end of the cylinder 2. The tail of the cylinder 2 is hinged to the support C, and the support C is fixed to the frame.

[0034] In addition, a horizontally arranged positioning rod 4 is fixed on the support A, and an unlocking switch is provided near the left end of the gate adjuster 5 (the unlocking switch is a component on the gate adjuster 5, which can control the extension and retraction of the telescopic shaft of the gate adjuster 5), and the unlocking switch is connected to the positioning rod 4;

[0035] During operation: when the output end of the cylinder 2 extends out, the force is transmitted to the gate adjuster 5 through the transmission lever 3, causing the gate adjuster 5 to be displaced to a certain extent. When the gate adjuster 5 is displaced, the unlocking switch is opened under the action of the positioning pull rod 4, and the telescopic shaft of the gate adjuster 5 extends outward. The telescopic shaft is displaced on the support B to realize the measurement of the extension amount of the gate adjuster 5.

[0036] See also Figure 1 In this embodiment, a force sensor 11 is fixed on the support C, and the tail of the cylinder 2 is hinged on the force sensor 11; and an adjustment lock block 8 that can be fixed and loosened is sleeved on the travel push rod 7;

[0037] During operation: when the adjustment lock block 8 is fixed on the stroke push rod 7 and the adjustment lock block 8 is against the left side of the support B, if the telescopic shaft of the gate regulator 5 extends outward at this time and the length of the cylinder 2 remains unchanged, pressure is applied to the force sensor 11 to measure the pressure value of the gate regulator 5; when the adjustment lock block 8 is fixed on the stroke push rod 7 and the adjustment lock block 8 is against the right side of the support B, if the telescopic shaft of the gate regulator 5 retracts inward at this time and the length of the cylinder 2 remains unchanged, tension is applied to the force sensor 11 to measure the tension value of the gate regulator 5.

[0038] See also Figure 1The right and left ends of the gate regulator 5 are supported by the support B and the transmission lever 3 respectively; the gate regulator 5 tends to be set horizontally, the transmission lever 3 tends to be set vertically, and the cylinder 2 is set horizontally. In addition, the frame 1 has a bottom plate, a support C is fixed on the bottom plate, a force sensor 11 is fixed on the left side of the support C, and the left end of the force sensor 11 is hinged to the cylinder 2; the cylinder 2 is connected to the air source valve group 6, and the extension and contraction of the cylinder 2 is controlled by the air source valve member 6.

[0039] See also Figure 1 A sliding sleeve 9 is fixed on the support B, and the output shaft of the brake regulator 5 slides through the sliding sleeve 9.

[0040] See also Figure 1 When the positioning rod 3 is connected to the unlocking switch: a horizontal positioning rod 4 is fixed on the support A, and a waist-shaped hole B is provided on the unlocking switch. The unlocking switch is passed through the positioning rod 4 through the waist-shaped hole B, and a positioning nut is screwed on the positioning rod 4. The positioning nut blocks the unlocking switch from the side; when the cylinder 2 is actuated, the gate adjuster 5 is displaced through the transmission lever 3, and the positioning nut and the unlocking switch generate a force, so that the unlocking switch opens the gate adjuster 5.

[0041] In this embodiment, the positioning nut can adjust the position on the positioning rod 4.

[0042] Specifically, see Figure 2 When the gate regulator test device is working:

[0043] (1) Measurement of brake regulator extension L1;

[0044] First, define a few parameters:

[0045] After the unlocking switch of the brake regulator 5 is hung on the positioning rod 4 through the waist-shaped hole B, it is screwed on the positioning rod 4 with a positioning nut, and the positioning nut is additionally on the right side of the unlocking switch. The value between the unlocking switch and the positioning nut is specified to be A1 value (set to be no greater than 65mm);

[0046] The adjusting lock block 8 is fixed on the travel push rod 7, and the adjusting lock block 8 is located on the left side of the support B with a spacing therebetween, which is specified as a Y value (Y1 before the cylinder 2 is actuated, and Y2 after the cylinder 2 is actuated and the telescopic shaft of the brake adjuster is extended);

[0047] The extension amount of the telescopic shaft (or telescopic part) of the gate adjuster 5 is specified to be L1. When the unlocking switch is triggered, the telescopic shaft can perform a telescopic action relative to the gate adjuster 5.

[0048] Then measure the extension amount: determine the A1 value and the Y1 value before measuring; then, after the cylinder 2 is inflated, its output end extends, so that the transmission lever 3 applies a rightward force to the gate adjuster 5, allowing the gate adjuster 5 to move to the right; when the gate adjuster 5 moves to the right by the distance of A1 value, the unlocking switch contacts the positioning nut, the unlocking switch is triggered and the gate adjuster 5 cannot continue to move to the right; when the unlocking switch is triggered, the telescopic shaft of the gate adjuster 5 extends, and the telescopic shaft drives the travel push rod 7 and the adjustment lock block 8 to move to the right. When fully extended, the distance between the adjustment lock block 8 and the left side of the support B is measured to be Y2; then the extension amount of the gate adjuster L1 = Y1-Y2-A1;

[0049] (2) Measurement of the brake regulator extension L2;

[0050] Also, specify a few parameters first:

[0051] Screw the positioning nut on the positioning rod 4, and then hang the unlocking switch of the brake regulator 5 on the positioning rod 4 through the waist-shaped hole. At this time, the positioning nut is located on the left side of the unlocking switch. The value between the unlocking switch and the positioning nut is specified to be A2 value (set to be no greater than 65mm);

[0052] The adjusting lock block 8 is fixed on the travel push rod 7, and the adjusting lock block 8 is located on the left side of the support B and there is a distance between the two, which is specified as the Y value (before the cylinder 2 is actuated, it is Y1, and after the cylinder 2 is actuated and the telescopic shaft of the brake adjuster is extended, it is Y2');

[0053] The amount of retraction of the telescopic shaft (or telescopic part) of the gate adjuster 5 is specified to be L2;

[0054] Then measure the retraction amount: before measuring, determine the A2 value and the Y1' value; then retract the cylinder 2 and its output end, so that the transmission lever 3 applies a left force to the gate adjuster 5, so that the gate adjuster 5 moves to the left; when the gate adjuster 5 moves toward the seat by a distance of A2 value, the unlocking switch contacts the positioning nut, the unlocking switch is triggered and the gate adjuster 5 cannot continue to move to the left; when the unlocking switch is triggered, the telescopic shaft of the gate adjuster 5 retracts, and the telescopic shaft drives the travel push rod 7 and the adjustment lock block 8 to move to the left. When fully extended, the distance between the adjustment lock block 8 and the left side of the support B is measured to be Y2'; then the extension amount of the gate adjuster L2 = Y1'-Y2'-A2;

[0055] (3) By adjusting and setting different A values ​​(i.e., A1 and A2 above) and the same Y value (i.e., Y1 and Y1' above), the extension amount and retraction amount of the gate regulator are detected after the cylinder is inflated and deflated, and the extension amount and retraction amount (i.e., L1 and L2 above) under different A values ​​(i.e., A1 and A2 above) are compared, the adjustment accuracy of the gate regulator can be measured;

[0056] (4) After setting the A value (i.e. A1 mentioned above), the Y value (i.e. Y1 mentioned above) is continuously reduced to measure the extension of the gate regulator. Then the A value (A1) is adjusted by 10 mm, and the Y value (Y1) is continuously reduced to measure the extension of the gate regulator in a new round. By comparing the two sets of data, the sensitivity of the gate regulator can be obtained.

[0057] (5) Measurement of tension and pressure values ​​of the brake regulator;

[0058] When the adjustment lock block 8 is fixed on the travel push rod 7 and the adjustment lock block 8 is against the left side of the support B, if the telescopic shaft of the gate adjuster 5 is extended outward and the length of the cylinder 2 remains unchanged, pressure is applied to the force sensor 11 to achieve the pressure value measurement of the gate adjuster 5;

[0059] When the adjustment lock block 8 is fixed on the travel push rod 7 and the adjustment lock block 8 is against the right side of the support B, if the telescopic axis of the gate adjuster 5 retracts inward and the length of the cylinder 2 remains unchanged, a pulling force is applied to the force sensor 11 to measure the pulling force value of the gate adjuster 5.

[0060] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A brake regulator test device, characterized in that: include: The frame (1) is provided with a support A and a support B at left and right positions of the upper surface of the frame (1), the support A is fixed on the support ear, and the support ear is fixed on the left side surface of the frame (1). A gate regulator (5) is provided between support A and support B. The support B is provided with a telescopic shaft at the right end of the gate adjuster (5), and the support A is fixed with a positioning rod (4), which is connected to an unlocking switch near the left end of the gate adjuster (5); A transmission lever (3), one end of which is hinged to the left end of the brake regulator (5), the middle of which is hinged to the waist-shaped hole A of the support ear via a rotating shaft, the other end of which is hinged to the output end of the cylinder (2), the tail of which is hinged to the support C, and the support C is fixed to the frame (1); When the output end of the cylinder (2) extends out, a force is transmitted to the gate regulator (5) through the transmission lever (3), causing the gate regulator (5) to be displaced to a certain extent. When the gate regulator (5) is displaced, the unlocking switch is opened under the action of the positioning pull rod (4), and the telescopic shaft of the gate regulator (5) extends outward. The telescopic shaft is displaced on the support B, thereby realizing the measurement of the extension amount of the gate regulator (5).

2. A brake regulator test device according to claim 1, characterized in that: A force sensor (11) is fixed on the support C, and the tail of the cylinder (2) is hinged on the force sensor (11); The output end of the brake regulator (5) is connected to a travel push rod (7), and the travel push rod (7) passes through a support B; an adjustment lock block (8) that can be fixed and loosened is sleeved on the travel push rod (7); When the adjustment lock block (8) is fixed on the travel push rod (7) and the adjustment lock block (8) is against the left side of the support B, if the telescopic shaft of the gate regulator (5) is extended outward and the length of the cylinder (2) remains unchanged, pressure is applied to the force sensor (11) to achieve pressure value measurement of the gate regulator (5); When the adjustment lock block (8) is fixed on the travel push rod (7) and the adjustment lock block (8) is against the right side of the support B, if the telescopic shaft of the gate adjuster (5) is retracted inward and the length of the cylinder (2) remains unchanged, a tensile force is applied to the force sensor (11), thereby realizing the measurement of the tensile force value of the gate adjuster (5).

3. A brake regulator test device according to claim 1 or 2, characterized in that: The right end and the left end of the gate adjuster (5) are supported by a support B and a transmission lever (3) respectively; The brake regulator (5) tends to be arranged horizontally, the transmission lever (3) tends to be arranged vertically, and the cylinder (2) tends to be arranged horizontally.

4. A brake regulator test device according to claim 1, characterized in that: A sliding sleeve (9) is fixed on the support B, and the output shaft of the brake regulator (5) slides through the sliding sleeve (9).

5. A brake regulator test device according to claim 4, characterized in that: The frame (1) has a bottom plate, a support C is fixed on the bottom plate, a force sensor (11) is fixed on the left side of the support C, and the left end of the force sensor (11) is hinged to the cylinder (2); The air cylinder (2) is connected to the air source valve group (6).

6. A brake regulator test device according to claim 1, characterized in that: A horizontal positioning rod (4) is fixed on the support A, a waist-shaped hole B is sleeved on the unlocking switch, the unlocking switch is passed through the positioning rod (4) through the waist-shaped hole B, a positioning nut is screwed on the positioning rod (4), and the positioning nut blocks the unlocking switch from the side; When the cylinder (2) is in motion, the gate regulator (5) is displaced via the transmission lever (3), and the positioning nut and the unlocking switch generate a force, so that the unlocking switch opens the gate regulator (5).

7. A brake regulator test device according to claim 6, characterized in that: The positioning nut can adjust its position on the positioning pull rod (4).

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