Auxiliary fixing and wheel lifting device in track distortion test
By designing a rail twist testing device including rails, fixed components and lifting components, the problems of high cost and large error in the prior art are solved, and more accurate vehicle performance testing and reduced maintenance costs are achieved.
Patent Information
- Application Number
- CN202411484012.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-02-07
AI Technical Summary
In the existing track twist tests, the multi-functional test bench is expensive to build and has high maintenance costs. It is easy to introduce errors when installing and traction vehicles, resulting in deviations in test results and affecting the accurate grasp of vehicle performance.
An auxiliary fixing and wheel lifting device in track twist test is designed, including rails, fixing components and lifting components. The fixing assembly fixes the rails through strong magnetic blocks to ensure that the wheel does not deviate; the lifting assembly uses a scissor lifting frame and a load-bearing plate to achieve any height lifting of the wheel through a motor drive screw and slider.
Through precise fixing and lifting mechanisms, the device reduces errors during the test process, improves the accuracy of the test results, reduces the maintenance cost of the test bench, and adapts to vehicles with different wheelbases and fixed distances.
Smart Images
Figure CN119394804A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of auxiliary tooling for rail transit vehicles, in particular to an auxiliary fixing and wheel lifting device in a track distortion test. Background Art
[0002] The operating routes of rail transit vehicles are complex and changeable. The curve layout in the route reflects the distortion of the operating route, which directly affects the safe passing performance of the vehicle. Therefore, the routine tests before the vehicle leaves the factory include single-vehicle tests that simulate the curve operation of the vehicle, namely track distortion test and balance test. The wheel load increases and decreases by simulating the distortion of the car body and bogie on the twisted route. According to the simulation of track distortion test in European standard EN14363, it is necessary to lay actual line operation or simulate the extreme curves in the track line with a multi-functional lifting test bench to record the wheel lift amount, wheel force or load changes. Based on the complexity and diversity of the actual routes where different vehicles run, it is impractical to simulate the actual route operation test in the factory. Therefore, the track distortion test often relies mainly on the test bench.
[0003] Deficiencies of existing technology:
[0004] Currently, multifunctional test benches with automatic lifting functions are expensive and have extremely high maintenance costs. Most of them are made of wedges of special height and fixed on an eight-point weighing platform. The wheels of the tested vehicle are led to the top of the wedges by a tractor to lift the wheels, thereby achieving bogie twisting and body twisting. During the test, additional torque for vehicle roll is added. The installation and fixation of the wedges and the traction of the vehicle will cause great errors, which will ultimately cause great deviations in the test results and affect the accurate grasp of vehicle performance. Summary of the invention
[0005] The object of the present invention is to provide an auxiliary fixing and wheel lifting device in a track distortion test to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an auxiliary fixing and wheel lifting device in a track distortion test, comprising a rail, which is arranged in a first direction, a second direction and a third direction along the width direction, the extension direction and the height direction of the rail respectively; the rail is provided with a fixing component and a lifting component, and the fixing component comprises:
[0007] a fixing member, the fixing member being arranged on the rail in the second direction;
[0008] A transmission member is arranged on the fixing member.
[0009] Preferably, the fixing member comprises:
[0010] A fixing seat, the fixing seat is fixedly arranged on the rail in the second direction, a strong magnetic block is arranged on one side of the fixing seat and is attached to the side surface of the rail;
[0011] A fixed block is arranged on the fixed seat, and a strong magnetic block is arranged on the bottom of the fixed block to fit the rail.
[0012] Preferably, the transmission member comprises:
[0013] A lead screw, the lead screw is provided with forward and reverse bidirectional threads and is arranged on the fixed block;
[0014] Two sliders are respectively arranged on both sides of the lead screw, and the two sliders are provided with internal threads matching with the lead screw threads.
[0015] Preferably, the lifting assembly comprises:
[0016] A scissor-type lifting frame, wherein the scissor-type lifting frame is hingedly connected by a plurality of scissor-type connecting rods, one end of the bottom end of the scissor-type lifting frame is arranged on the two sliding blocks, and the other end of the bottom end of the scissor-type lifting frame is arranged on the fixed block;
[0017] A load-bearing plate is arranged on the scissor-type lifting frame.
[0018] Preferably, a motor and a motor-driven rack are provided at both ends of the lead screw, and the motor controls the rotation of the lead screw by controlling the motor-driven rack.
[0019] Preferably, the two sliders are controlled by the motor to run in opposite directions at both ends of the lead screw.
[0020] Preferably, the scissor-type lifting frame operates in the third direction.
[0021] Preferably, the first direction, the second direction and the third direction are perpendicular to each other.
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] 1. An auxiliary fixing and wheel lifting device in a track distortion test is provided with a fixing assembly, the fixing assembly includes a fixing part and a transmission part, the fixing part includes a fixing seat and a fixing block, the fixing seat is fixedly installed on the rail in the second direction, a strong magnetic block is installed on one side of the fixing seat and fits on the side of the rail, the strong magnetic block can limit the movement of the fixing seat in the first direction to avoid deviation, the fixing block is installed on the fixing seat, and the bottom of the fixing block is fitted on the rail by installing a strong magnetic block, the strong magnetic block prevents the fixing seat from deviating in the second direction, so that the wheel does not move, the transmission part includes a screw and two sliders, the screw is set as a forward and reverse bidirectional thread and is installed on the fixing block, the two sliders are respectively installed on both sides of the screw, and the overall assembly limits the wheel from deviating during the experiment and does not affect the test results.
[0024] 2. The auxiliary fixing and wheel lifting device in the track distortion test is provided with a lifting assembly, which includes a scissor-type lifting frame and a load-bearing plate. The scissor-type lifting frame is hinged by a plurality of scissor-type connecting rods. One end of the bottom end of the scissor-type lifting frame is connected to two sliders, and the other end of the bottom end of the scissor-type lifting frame is fixedly connected to a fixed block. The load-bearing plate is installed on the scissor-type lifting frame. The motor controls the lead screw to rotate and run, and the lead screw drives the two sliders to run in the second direction in the opposite direction. The two sliders run in the second direction, causing the scissor-type connecting rod to change its angle at the hinge point, so that the scissor-type lifting frame realizes movement in the third direction and drives the wheels on the load-bearing plate to run in the third direction, thereby realizing the lifting and lowering of the wheels of the bogie in track distortion. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0026] Figure 2 It is a schematic diagram of a fixing assembly of the present invention;
[0027] Figure 3 It is a partial structural schematic diagram of the present invention;
[0028] Figure 4 It is a schematic diagram of the lifting assembly of the present invention;
[0029] In the figure: 110, rail; x, first direction; y, second direction; z, third direction; 120, fixing member; 130, transmission member; 121, fixing seat; 122, strong magnetic block; 123, fixing block; 131, lead screw; 132, two sliders; 141, scissor-type lifting frame; 1411, scissor-type connecting rod; 142, bearing plate; 150, motor-driven rack; 160, wheel. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0031] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0032] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.
[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.
[0034] Example
[0035] See also Figure 1-4As shown, the present invention provides a technical solution for an auxiliary fixing and wheel lifting device in a track distortion test: comprising a rail 110, wherein a first direction x, a second direction y and a third direction z are respectively arranged along the width direction, the extension direction and the height direction of the rail 110, and the first direction x, the second direction y and the third direction z are perpendicular to each other; the rail 110 is provided with a fixing assembly and a lifting assembly, the fixing assembly comprises a fixing member 120 and a transmission member 130, the fixing member 120 is installed on the rail 110 in the second direction y, the transmission member 130 is installed on the fixing member 120, the fixing member 120 comprises a fixing seat 121 and a fixing block 123, the fixing seat 121 is fixedly installed on the rail 110 in the second direction y, a strong magnetic block 122 is installed on one side of the fixing seat 121 and is attached to the side of the rail 110, the strong magnetic block 122 can limit the movement of the fixing seat 121 in the first direction x to avoid deviation, The fixed block 123 is installed on the fixed seat 121, and the bottom of the fixed block 123 is installed with a strong magnetic block 122 to fit the rail 110. The strong magnetic block 122 prevents the fixed seat 121 from deviating in the second direction y, so that the wheel 160 does not move. The transmission member 130 includes a screw 131 and two sliders 132. The screw 131 is set to a forward and reverse bidirectional thread and is installed on the fixed block 123. The two sliders 132 are respectively installed on both sides of the screw 131. The two sliders 132 are provided with internal threads and match with the threads of the screw 131. A motor and a motor-driven rack 150 are installed at both ends of the screw 131. The motor controls the rotation of the screw 131 by controlling the operation of the motor-driven rack 150. The rotation of the screw 131 drives the two sliders 132 to run in the second direction y in the opposite direction at both ends of the screw 131, so that it can adapt to bogies with different wheelbases and vehicles with different fixed distances.
[0036] Furthermore, the lifting assembly includes a scissor-type lifting frame 141 and a carrying plate 142. The scissor-type lifting frame 141 is hingedly formed by a plurality of scissor-type connecting rods 1411. One end of the bottom end of the scissor-type lifting frame 141 is connected to two sliders 132, and the other end of the bottom end of the scissor-type lifting frame 141 is fixedly connected to a fixed block 123. The carrying plate 142 is installed on the scissor-type lifting frame 141. The motor controls the lead screw 131 to rotate, and the lead screw 131 drives the two sliders 132 to reversely run in the second direction y. The two sliders 132 run in the second direction y, causing the scissor-type connecting rod 1411 to change its angle at the hinge point position, so that the scissor-type lifting frame 141 realizes movement in the third direction z, and drives the wheel 160 on the carrying plate 142 to run in the third direction y, thereby realizing the lifting and lowering of the wheel 160 at any height, that is, realizing the lifting and lowering of the bogie wheel 160 in the track distortion.
[0037] Furthermore, when conducting the track distortion test, the lifting amount is first confirmed; then the fixing assembly and the lifting assembly are placed and fixed on the rail 110, and based on the bogie wheelbase and the vehicle spacing, the rack 150 is driven by the motor to move, so as to realize the rotation of the screw 131, so that the two sliders 132 move towards or in the opposite direction, thereby adapting to the distance 160 between the bogie wheels of a carriage; then the vehicle is weighed and leveled until the left and right axle weight difference does not exceed 4%, which is a qualified state. By adjusting the height of the height valve stem, the air is transported to the air spring pipeline through the main air hose with the help of the air tightness test trolley. After the inflation is completed, the air spring isolation valve of the auxiliary brake device needs to be opened, and the air spring is inflated to the normal state, pushed onto the weighing platform, and after waiting for the data to stabilize, a photo is taken and the load data of each wheel is recorded as Q 01～8 and air spring pressure data; then close the main air duct valve, unlock the height adjustment rod or the horizontal rod, and fix the horizontal rod in a horizontal position to prevent the air spring from exhausting. During this process, pay attention to using a pressure gauge to measure the air pressure in the air spring and make it consistent with the air spring pressure recorded before unlocking, with an allowable deviation of ±0.1 bar; then control the fixed component and the lifting component on the weighing platform, and realize the scissor-type lifting frame 141 to lift and lower the corresponding wheel 160 to the test height through the movement of the two sliders 132. After the data is stable, record the wheel weight of each wheel 160 as Q n1～8 ; Finally, remove the air spring pressure test connector to complete the deflation of the air spring.
[0038] Furthermore, when disassembling the fixed component, by tilting the side of the fixed component without the strong magnetic block 122, a gap is created between the strong magnetic block 122 on the side of the fixing seat 121 and the bottom of the fixing block 123 and the rail 110, and the magnetic force is reduced, thereby achieving side rolling of the fixed component, thereby facilitating the disassembly of the entire device.
[0039] The working principle of the present invention is as follows:
[0040] When the auxiliary fixing and wheel lifting device in a track distortion test of the present embodiment is in use, the rail 110 is provided with a fixing assembly and a lifting assembly, the fixing assembly includes a fixing member 120 and a transmission member 130, the fixing member 120 is installed on the rail 110 in the second direction y, the transmission member 130 is installed on the fixing member 120, the fixing member 120 includes a fixing seat 121 and a fixing block 123, the fixing seat 121 is fixedly installed on the rail 110 in the second direction y, a strong magnetic block 122 is installed on one side of the fixing seat 121 and is attached to the side of the rail 110, and the strong magnetic block 122 can limit the fixing seat 121 in the second direction y. The wheel 160 moves in a direction x to avoid deviation. The fixed block 123 is installed on the fixed seat 121, and the bottom of the fixed block 123 is installed with a strong magnetic block 122 to fit the rail 110. The strong magnetic block 122 prevents the fixed seat 121 from deviating in the second direction y, so that the wheel 160 does not move. The transmission member 130 includes a screw 131 and two sliders 132. The screw 131 is set to a forward and reverse bidirectional thread and is installed on the fixed block 123. The two sliders 132 are respectively installed on both sides of the screw 131. The two sliders 132 are provided with internal threads and cooperate with the threads of the screw 131. Motors and motor-driven racks 150 are installed at both ends of 131. The motor controls the rotation of the lead screw 131 by controlling the operation of the motor-driven rack 150. The rotation of the lead screw 131 drives the two sliders 132 to run in the second direction y at both ends of the lead screw 131 in the opposite direction, so as to adapt to bogies with different wheelbases and vehicles with different fixed distances. The lifting assembly includes a scissor-type lifting frame 141 and a bearing plate 142. The scissor-type lifting frame 141 is articulated by a plurality of scissor-type connecting rods 1411. One end of the bottom end of the scissor-type lifting frame 141 is connected to the two sliders 132, and the other end of the bottom end of the scissor-type lifting frame 141 is connected to the two sliders 132. One end is fixedly connected to the fixing block 123, and the bearing plate 142 is installed on the scissor-type lifting frame 141. The motor controls the lead screw 131 to rotate, and the lead screw 131 drives the two sliders 132 to move in the second direction y in the opposite direction. The two sliders 132 move in the second direction y, causing the scissor-type connecting rod 1411 to change its angle at the hinge point, so that the scissor-type lifting frame 141 realizes movement in the third direction z, and drives the wheel 160 on the bearing plate 142 to move in the third direction y, realizing the lifting and lowering of the wheel 160 to any height, that is, realizing the lifting and lowering of the bogie wheel 160 in the track distortion.
[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. An auxiliary fixing and wheel lifting device in a track distortion test, comprising a rail (110), characterized in that: The width direction of the steel rail (110), the extension direction of the steel rail (110), and the height direction are respectively a first direction (x), a second direction (y), and a third direction (z); the steel rail (110) is provided with a fixing component and a lifting component, and the fixing component comprises: a fixing member (120), the fixing member (120) being arranged on the rail (110) in the second direction (y); A transmission member (130), wherein the transmission member (130) is arranged on the fixing member (120).
2. The auxiliary fixing and wheel lifting device in the track distortion test according to claim 1, characterized in that: The fixing member (120) comprises: A fixing seat (121), the fixing seat (121) being fixedly arranged on the steel rail (110) in the second direction (y), a strong magnetic block (122) being arranged on one side of the fixing seat (121) and being attached to the side surface of the steel rail (110); A fixing block (123), the fixing block (123) being arranged on the fixing seat (121), and the bottom of the fixing block (123) being arranged to fit the steel rail (110) by means of a strong magnetic block (122).
3. The auxiliary fixing and wheel lifting device in the track distortion test according to claim 2, characterized in that: The transmission member (130) comprises: A lead screw (131), the lead screw (131) being configured with forward and reverse bidirectional threads and being disposed on the fixed block (123); Two sliders (132), the two sliders (132) are respectively arranged on both sides of the lead screw (131), and the two sliders (132) are provided with internal threads that match the threads of the lead screw (131).
4. The auxiliary fixing and wheel lifting device in the track distortion test according to claim 3, characterized in that: The lifting assembly comprises: A scissor-type lifting frame (141), the scissor-type lifting frame (141) being hingedly connected by a plurality of scissor-type connecting rods (1411), one end of the bottom end of the scissor-type lifting frame (141) being arranged on the two sliding blocks (132), and the other end of the bottom end of the scissor-type lifting frame (141) being arranged on the fixed block (123); A load-bearing plate (142), the load-bearing plate (142) being arranged on the scissor-type lifting frame (141).
5. The auxiliary fixing and wheel lifting device in the track distortion test according to claim 3, characterized in that: A motor and a motor-driven rack (150) are provided at both ends of the lead screw (131), and the motor controls the rotation of the lead screw (131) by operating the motor-driven rack (150).
6. The auxiliary fixing and wheel lifting device in the track distortion test according to claim 5, characterized in that: The two sliders (132) are controlled by the motor to move in opposite directions in the second direction (y) at the two ends of the lead screw (131).
7. The auxiliary fixing and wheel lifting device in the track distortion test according to claim 4, characterized in that: The scissor-type lifting frame (141) moves in the third direction (z).
8. The auxiliary fixing and wheel lifting device in the track distortion test according to claim 1, characterized in that: The first direction (x), the second direction (y), and the third direction (z) are perpendicular to each other.