An integrated testing device for static strength and force fatigue of locomotive seats

Abstract

This utility model relates to the field of adjustable bracket technology, specifically an integrated testing device for static strength and force fatigue of locomotive seats. The utility model includes two base plates, with an adjusting device on one side of each base plate. The adjusting device includes two columns, one end of which is fixedly connected to the base plate. A crossbeam is fixedly connected to the side of the two columns that are close to each other. A screw is rotatably connected inside each column, and an internally threaded block is threaded onto the arc surface of the screw. A force-applying beam turntable is fixedly connected to one side of the internally threaded block. A screw is threaded onto one end of the force-applying beam turntable. The arc surfaces of the two screws are slidably connected to the force-applying beam body, and a guide block is slidably connected to the outside of the force-applying beam body. This invention solves the problem that traditional integrated testing devices for static strength and force fatigue of locomotive seats cannot flexibly adjust the position of the force-applying unit, thus failing to meet the testing requirements of multiple components of the seat.

Description

Technical Field

[0001] This utility model relates to the field of adjustable bracket technology, and in particular to an integrated detection device for static strength and force fatigue of locomotive seats. Background Technology

[0002] The locomotive seat static strength and force fatigue integrated testing device is a professional equipment used to test the performance of locomotive seats (such as seats in rail transit vehicles such as trains, high-speed trains, and subways). It is mainly used to verify the safety, reliability, and durability of the seats under static loads and dynamic fatigue loads.

[0003] In existing technologies, the position of the force application unit in the integrated testing device for static strength and fatigue of locomotive seats cannot be flexibly adjusted, which makes it impossible to meet the testing requirements of multiple parts of the seat and to accurately verify the strength and fatigue performance of the seat in real-world scenarios, thus resulting in significant limitations in testing. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing integrated testing devices for static strength and force fatigue of locomotive seats, where the position of the force application unit cannot be flexibly adjusted, thus failing to meet the testing requirements of multiple components of the seat. Therefore, this invention proposes an integrated testing device for static strength and force fatigue of locomotive seats.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an integrated testing device for static strength and force fatigue of a locomotive seat, comprising two base plates, an adjustment device on one side of each base plate, the adjustment device comprising two columns, one end of each column being fixedly connected to the base plate, a crossbeam being fixedly connected to the side of the two columns that are close to each other, a screw being rotatably connected inside each column, an internal threaded block being threadedly connected to the arc surface of the screw, a force-applying beam turntable being fixedly connected to one side of the internal threaded block, a screw being threadedly connected to one end of the force-applying beam turntable, a force-applying beam body being slidably connected to the arc surfaces of the two screws, a guide block being slidably connected to the outside of the force-applying beam body, a first force-applying electric push rod being fixedly connected to one side of the guide block, a guide seat being slidably connected to the outside of the force-applying beam body, and a second force-applying electric push rod being fixedly connected to one side of the guide seat.

[0006] The effect achieved by the above components is that the rotation of the screw adjusts the position of the internal thread block, and the rotation of the force beam turntable adjusts the position of the screw, thereby adjusting the position of the force beam body.

[0007] Preferably, a support frame is fixedly connected to one side of the crossbeam, and a force-applying beam lifting motor is fixedly connected to one side of the support frame.

[0008] The effect achieved by the above components is that the lifting motor of the force beam is fixed on the support frame, and the support frame is fixed on the crossbeam.

[0009] Preferably, the output end of the force-applying beam lifting motor is fixedly connected to a double-layer synchronous pulley.

[0010] The effect achieved by the above components is that the starting output of the force beam lifting motor drives the double-layer synchronous wheel to rotate.

[0011] Preferably, the double-layer synchronous pulley is fitted with two synchronous belts.

[0012] The effect achieved by the above components is that the synchronous belt and the double-layer synchronous pulley are compatible.

[0013] Preferably, a single-layer synchronous pulley is fitted inside the synchronous belt, and the interior of the single-layer synchronous pulley is fixedly connected to the screw.

[0014] The effect achieved by the above components is that the synchronous belt drive drives the single-layer synchronous pulley to rotate, thereby causing the screw to rotate.

[0015] Preferably, a fixing device is provided on one side of the two columns that are close to each other. The fixing device includes a base, both sides of which are fixedly connected to the columns. Two T-shaped grooves are opened at one end of the base.

[0016] The aforementioned components achieve the following effect: T-shaped grooves are formed on the chassis, and the chassis is fixed to the column.

[0017] Preferably, an I-shaped plate is slidably connected inside the T-shaped groove.

[0018] The effect achieved by the above components is that the I-shaped plate moves and slides within the T-shaped groove.

[0019] Preferably, a seat bracket is fixedly connected to one side of each of the two I-shaped plates.

[0020] The effect achieved by the above components is to fix the seat bracket to the I-beam plate.

[0021] Preferably, two U-shaped frames are fixedly connected to one side of the seat bracket, and seat fixing frames are fixedly connected to both ends of the two U-shaped frames.

[0022] The aforementioned components achieve the following effect: the seat fixing bracket is fixed on the U-shaped frame, and the U-shaped frame is fixed on the seat bracket.

[0023] In summary, the beneficial effects of this utility model are as follows:

[0024] In this invention, by means of an adjustment device, when the force application detection position needs to be adjusted, the force application beam lifting motor is started. Its output end drives the single-layer synchronous wheel and screw to rotate through the double-layer synchronous wheel and synchronous belt, causing the internal thread block to move along the screw axis, thereby moving the force application beam turntable and completing the movement of the force application beam body. When the force application direction needs to be adjusted, the screw is turned to release the limit, and the force application beam body is rotated to change the force application direction. Through the adjustment device, the problem of the inflexible adjustment of the force application unit position in traditional locomotive seat static strength and force fatigue integrated detection devices, which cannot meet the detection needs of multiple parts of the seat, is solved.

[0025] In this invention, by means of a fixing device, when the seat position needs to be adjusted, the seat feet are fixed to the seat fixing frame groove with bolts, the seat bracket is pushed, and the I-shaped plate slides in the T-shaped groove. The U-shaped frame moves synchronously, driving the overall displacement of the seat fixing frame to complete the position adjustment. By means of a fixing device, the problem of poor freedom adjustment function after the seat is fixed in traditional locomotive seat static strength and force fatigue integrated testing devices is solved, which leads to inconvenience in adjusting the test position and affects the testing efficiency and accuracy. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the adjustment structure of this utility model;

[0028] Figure 3 This is a partial cross-sectional view of the adjustment structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the fixing structure of this utility model;

[0030] Figure 5 This is a dynamic structural diagram of the three-dimensional structure of this utility model. Figure 1 ;

[0031] Figure 6 This is a dynamic structural diagram of the three-dimensional structure of this utility model. Figure 2 .

[0032] Legend: 1. Base plate; 2. Adjustment device; 201. Column; 202. Support frame; 203. Lifting motor of force-applying beam; 204. Double-layer synchronous pulley; 205. Synchronous belt; 206. Single-layer synchronous pulley; 207. Screw; 208. Internal threaded block; 209. Force-applying beam turntable; 210. Screw; 211. Force-applying beam body; 212. Guide block; 213. First force-applying electric push rod; 214. Guide seat; 215. Second force-applying electric push rod; 216. Crossbeam; 3. Fixing device; 31. Chassis; 32. T-slot; 33. I-shaped plate; 34. Seat bracket; 35. U-shaped frame; 36. Seat fixing frame. Detailed Implementation

[0033] Reference Figure 1 , Figure 5 and Figure 6 As shown, this utility model provides a technical solution: an integrated testing device for static strength and force fatigue of a locomotive seat, including two base plates 1, an adjustment device 2 on one side of the base plate 1, and a fixing device 3 on the side of the two columns 201 that are close to each other.

[0034] The specific settings and functions of the adjustment device 2 and the fixing device 3 will be described in detail below.

[0035] Reference Figure 2 and Figure 3As shown in this embodiment: the adjusting device 2 includes two columns 201. One end of the column 201 is fixedly connected to the base plate 1. A crossbeam 216 is fixedly connected to the side of the two columns 201 that are close to each other. A screw 207 is rotatably connected inside the column 201. An internal threaded block 208 is threadedly connected to the arc surface of the screw 207. A force-applying beam turntable 209 is fixedly connected to one side of the internal threaded block 208. A screw 210 is threadedly connected to one end of the force-applying beam turntable 209. A force-applying beam body 211 is slidably connected to the arc surface of the two screws 210. A guide block 212 is slidably connected to the outside of the force-applying beam body 211. A first force-applying electric push rod 213 is fixedly connected to one side of the guide block 212. A guide seat 214 is slidably connected to the outside of the force-applying beam body 211. A second force-applying electric push rod 215 is fixedly connected to one side of the guide seat 214. The rotation of screw 207 adjusts the position of internal thread block 208, which in turn adjusts the position of screw 210 via force-applying beam turntable 209, thus adjusting the position of force-applying beam body 211. A support frame 202 is fixedly connected to one side of crossbeam 216, and a force-applying beam lifting motor 203 is fixedly connected to one side of support frame 202. This achieves the effect of force-applying beam lifting motor 203 being fixed to support frame 202, and support frame 202 being fixed to crossbeam 216. A double-layer synchronous pulley 204 is fixedly connected to the output end of force-applying beam lifting motor 203. This achieves the effect of force-applying beam lifting motor 203 starting and driving the double-layer synchronous pulley 204 to rotate. Two synchronous belts 205 are sleeved on the outside of the double-layer synchronous pulley 204. This achieves the effect of synchronous belts 205 and double-layer synchronous pulleys 204 being compatible. A single-layer synchronous pulley 206 is sleeved inside the synchronous belt 205, and the inside of the single-layer synchronous pulley 206 is fixedly connected to screw 207. This achieves the effect of synchronous belt 205 driving single-layer synchronous pulley 206 to rotate, thus causing screw 207 to rotate.

[0036] Reference Figure 4 As shown in this embodiment: the fixing device 3 includes a chassis 31, both sides of which are fixedly connected to the column 201. Two T-shaped grooves 32 are formed at one end of the chassis 31. This achieves the effect that the T-shaped grooves 32 are formed on the chassis 31, and the chassis 31 is fixed to the column 201. I-shaped plates 33 are slidably connected inside the T-shaped grooves 32. This achieves the effect that the I-shaped plates 33 can slide within the T-shaped grooves 32. Seat brackets 34 are fixedly connected to one side of the two I-shaped plates 33. This achieves the effect that the seat brackets 34 are fixed to the I-shaped plates 33. Two U-shaped frames 35 are fixedly connected to one side of the seat brackets 34, and seat fixing frames 36 are fixedly connected to both ends of the two U-shaped frames 35. This achieves the effect that the seat fixing frames 36 are fixed to the U-shaped frames 35, and the U-shaped frames 35 are fixed to the seat brackets 34.

[0037] Working Principle: When adjusting the force detection position using the adjusting device 2, the operator first starts the force beam lifting motor 203. After the force beam lifting motor 203 starts running, its output drives the double-layer synchronous pulley 204 to rotate. The double-layer synchronous pulley 204 is driven by the synchronous belt 205, which in turn drives the single-layer synchronous pulley 206 to rotate. The rotation of the single-layer synchronous pulley 206 causes the screw 207 to rotate accordingly. The screw 207 and the internal threaded block 208 are connected by a threaded engagement. When the screw 207 rotates, the internal threaded block 208 moves along the axis of the screw 207. The internal threaded block 208 is connected to the force beam turntable 209. Therefore, the movement of the internal threaded block 208 will cause the position of the force beam turntable 209 to change. Since the screw 210 is threadedly assembled with the force beam turntable 209, it serves to limit the movement of the force beam body 211. Thus, the movement of the force beam turntable 209 can... The force-applying beam body 211 is moved, and the guide block 212 and guide seat 214 assembled with it also move accordingly, thereby realizing the position adjustment of the first force-applying electric push rod 213 and the second force-applying electric push rod 215. If it is necessary to further adjust the force direction, the screw 210 can be turned to release the limit on the force-applying beam body 211. At this time, the force-applying beam body 211 can rotate freely, thereby flexibly changing the orientation and position of the first force-applying electric push rod 213 and the second force-applying electric push rod 215. After adjusting to the required position, the screw 210 can be used to limit the force-applying beam body 211 again, which can meet different testing requirements. Through the adjustment device 2, the problem that the position of the force-applying unit in the traditional locomotive seat static strength and force fatigue integrated testing device cannot be flexibly adjusted, resulting in the inability to meet the testing requirements of multiple parts of the seat is solved.

[0038] With the fixing device 3, when the seat position needs to be adjusted, the operator first uses bolts to fix the seat feet in the groove of the seat fixing frame 36 to ensure that the seat and the seat fixing frame 36 are firmly connected. Then, the seat bracket 34 is pushed so that the I-shaped plate 33 slides in the T-shaped groove 32. At the same time, the U-shaped frame 35 will move synchronously, thereby driving the overall displacement of the seat fixing frame 36. With the fixing device 3, the problem of poor freedom adjustment function after the seat is fixed in the traditional locomotive seat static strength and force fatigue integrated testing device is solved, which leads to inconvenience in adjusting the test position and affects the testing efficiency and accuracy.

[0039] When testing a component of the seat, such as the backrest, the position of the force application unit is first adjusted using four degrees of freedom. The force application beam lifting motor 203 is activated to adjust the height of the force application beam body 211 as a degree of freedom adjustment. The first force application electric push rod 213 and the second force application electric push rod 215 are manually moved to adjust the horizontal position as a degree of freedom adjustment. The seat bracket 34 is pushed to adjust the front-to-back distance as a degree of freedom adjustment. The force application beam turntable 209 is rotated to adjust the force application direction as a degree of freedom adjustment. After adjusting to the required position, the first force application electric push rod 213 or the second force application electric push rod 215 is activated to apply the stress value to test the part of the seat to be tested.

[0040] The logic for adjusting degrees of freedom is as follows:

[0041] The first degree of freedom is the lifting of the force-applying beam body 211: Start the force-applying beam lifting motor 203, which drives the screw 207 to rotate through the double-layer synchronous wheel 204 and synchronous belt 205. The internal thread block 208 drives the force-applying beam body 211 to move up and down, adjusting the force application height to the position to be measured (such as backrest or seat cushion).

[0042] The second degree of freedom is the horizontal movement of the force-applying unit: manually push the guide block 212 and the guide seat 214 to adjust the first force-applying electric push rod 213 and the second force-applying electric push rod 215, thereby adjusting the horizontal force-applying position of the force-applying unit.

[0043] The third degree of freedom is the forward and backward movement of the seat: push the seat bracket 34 so that the I-shaped plate 33 slides in the T-shaped groove 32 of the chassis 31, thereby moving the seat forward and backward and adjusting the relative position of the tested component and the force application unit (such as moving the seat forward when testing the foot pedal). After it is in place, fix the seat bracket 34 with bolts.

[0044] The fourth degree of freedom is the rotation of the force-applying beam body 211: Tighten the screw 210 of the force-applying beam turntable 209, manually rotate the force-applying beam body 211, and change the direction of force application (for example, when the seat cushion is tested upward, the force-applying beam body 211 needs to be rotated 180 degrees and the U-shaped pull head needs to be replaced), and then fix it in place.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A static strength and force value fatigue integrated detection device for a locomotive seat, comprising two bottom plates (1), characterized in that: An adjustment device (2) is provided on one side of the base plate (1). The adjustment device (2) includes two columns (201). One end of each column (201) is fixedly connected to the base plate (1). A crossbeam (216) is fixedly connected to the side of the two columns (201) that are close to each other. A screw (207) is rotatably connected inside each column (201). An internal thread block (208) is threadedly connected to the arc surface of the screw (207). A force-applying beam turntable (209) is fixedly connected to one side of the internal thread block (208). One end of the force-applying beam turntable (209) is threaded with a screw (210), and the arc surfaces of the two screws (210) are slidably connected to the force-applying beam body (211). The outside of the force-applying beam body (211) is slidably connected to a guide block (212). A first force-applying electric push rod (213) is fixedly connected to one side of the guide block (212). A guide seat (214) is slidably connected to the outside of the force-applying beam body (211), and a second force-applying electric push rod (215) is fixedly connected to one side of the guide seat (214).

2. The static strength and force value fatigue integrated detection device for a locomotive seat according to claim 1, characterized in that: A support frame (202) is fixedly connected to one side of the crossbeam (216), and a force-applying beam lifting motor (203) is fixedly connected to one side of the support frame (202).

3. The static strength and force value fatigue integrated detection device for a locomotive seat according to claim 2, characterized in that: The output end of the force-applying beam lifting motor (203) is fixedly connected to a double-layer synchronous pulley (204).

4. The static strength and force value fatigue integrated detection device for a locomotive seat according to claim 3, characterized in that: The double-layer synchronous pulley (204) is fitted with two synchronous belts (205).

5. The static strength and force value fatigue integrated detection device for a locomotive seat according to claim 4, characterized in that: The synchronous belt (205) is fitted with a single-layer synchronous pulley (206), and the interior of the single-layer synchronous pulley (206) is fixedly connected to the screw (207).

6. The static strength and force value fatigue integrated detection device for a locomotive seat according to claim 1, characterized in that: A fixing device (3) is provided on one side of the two columns (201) that are close to each other. The fixing device (3) includes a base (31). Both sides of the base (31) are fixedly connected to the columns (201). Two T-shaped grooves (32) are opened at one end of the base (31).

7. The static strength and force value fatigue integrated detection device for a locomotive seat according to claim 6, characterized in that: The T-groove (32) is internally slidably connected to an I-shaped plate (33).

8. The static strength and force value fatigue integrated detection device for a locomotive seat according to claim 7, characterized in that: A seat bracket (34) is fixedly connected to one side of each of the two I-shaped plates (33).

9. The static strength and force value fatigue integrated detection device for a locomotive seat according to claim 8, characterized in that: Two U-shaped brackets (35) are fixedly connected to one side of the seat bracket (34), and seat fixing brackets (36) are fixedly connected to both ends of the two U-shaped brackets (35).

Images