A launcher release force value detection device

Abstract

This invention discloses a device for detecting the release force of a launcher, comprising a loading mechanism, a lever mechanism, and a sensor. The lever mechanism is vertically fixed to the left end of the loading mechanism. The loading assembly includes a connecting plate, two guide rail supports, a turbine housing, and a lead screw. The lever mechanism includes a lever, a sensor tray, a lever shaft, and a force measuring head. The horizontal distance between the force measuring head and the lever shaft is the first force arm L1; the vertical distance between the lever shaft and the rolling pin is the second force arm L2; and the vertical distance from the lever shaft to the upper end of the lever is the third force arm L3. The first force arm L1 and the second force arm L2 are of equal length. This invention transforms the horizontal tension to be detected into a vertical pressure through the lever mechanism, effectively reducing the overall horizontal dimension of the detection mechanism. It provides a more convenient device for detecting the release force of the launcher release block.

Description

Technical Field

[0001] This invention belongs to the technical field of force value detection equipment, specifically a launcher release force value detection device. Background Technology

[0002] Currently, devices used to measure the instantaneous force of a release mechanism on a launcher typically employ a series tension / compression sensors connected in the direction of the force, which are then transmitted through a loading mechanism. When a component is subjected to force in that direction, the force transmission causes the sensor to register a change in tension or compression in the same direction. The force value is then read by the sensor at the instant the release mechanism on the launcher releases.

[0003] As can be seen from the above detection methods, the tension / compression sensor needs to be connected in series in the direction of force transmission, and the corresponding force detection device must be consistent with the direction of force application. Detection using a series sensor method results in a relatively long structure along the force direction for the force detection device, the tension / compression sensor, and the loading mechanism. However, due to the structural dimensions of the launcher, using existing force detection devices is difficult both in installation and testing. Summary of the Invention

[0004] In view of this, the present invention provides a launcher release force detection device that converts horizontal force into vertical force for detection, thereby reducing the horizontal structural dimensions required for the entire detection process.

[0005] The technical solution adopted in this invention is: a launcher release force detection device, including a loading mechanism and a sensor, characterized in that: it further includes a lever mechanism; the loading mechanism includes a connecting plate, two sets of guide rail brackets, a turbine box, and a lead screw; the connecting plate is horizontally arranged at the bottom, and the surface of the connecting plate is provided with a detection port that runs vertically through; the two sets of guide rail brackets are vertically fixed on both sides of the connecting plate; the guide rail brackets are provided with horizontal guide rails; the two guide rails are located in the same horizontal plane; the turbine box is fixed at the right end of the connecting plate, and the lead screw is connected to a worm gear in the turbine box, the lead screw is horizontally arranged in the horizontal plane between the connecting plate and the guide rails; the front end of the lead screw is provided with a connecting shaft, the connecting shaft is provided with a horizontal shaft hole, and the axis of the shaft hole is perpendicular to the axis of the lead screw;

[0006] The lever mechanism includes a lever, a sensor tray, a lever shaft, and a force measuring head. The lever mechanism is located at the left end of the connecting plate. A roller pin is located at the lower end of the lever, extending downwards from the detection port of the connecting plate. A horizontal rod is located on the right side of the upper end of the lever, with a vertically downward-pointing force measuring head at the right end of the horizontal rod. A longitudinal opening is located on the vertical rod of the lever, and the connecting shaft at the front end of the lead screw is inserted into the opening. The lever shaft passes horizontally through the shaft hole of the connecting shaft located in the opening and connects to the lever. The lever can rotate around the lever shaft. The sensor tray is horizontally positioned on the lever shaft above the lever shaft. Needle rollers are located on both sides of the sensor tray. The needle rollers are respectively inserted into the guide rails of the guide rail bracket to form a sliding fit. The sensor is fixed to the sensor tray with screws. The force measuring head is vertically inserted into the sensor.

[0007] The horizontal distance between the force measuring head and the lever shaft is the first force arm L1; the vertical distance between the lever shaft and the rolling pin is the second force arm L2; the vertical distance from the lever shaft to the upper end of the lever is the third force arm L3; the first force arm L1 and the second force arm L2 are of equal length.

[0008] Furthermore, the turbine housing is connected to a handwheel.

[0009] Furthermore, the sensor is externally connected to a force gauge.

[0010] Furthermore, the turbine housing is equipped with a force gauge bracket for placing the force gauge.

[0011] The beneficial effects of this invention are: by using a lever mechanism, the horizontal tensile force to be detected is converted into a vertical compressive force, effectively reducing the overall horizontal dimensions of the detection mechanism. This provides a more convenient device for detecting the release force value of the launcher release block. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a frontal schematic diagram of the present invention with a force gauge placed thereon;

[0014] Figure 3 This is a schematic diagram of the loading mechanism in this invention;

[0015] Figure 4 This is a schematic diagram of the lever mechanism in this invention;

[0016] Figure 5 This is a simplified structural diagram of the present invention;

[0017] Figure 6 This is a schematic diagram of the force analysis of the present invention.

[0018] In the diagram: 1. Loading mechanism, 101. Turbine box, 102. Guide rail bracket, 103. Lead screw, 104. Connecting shaft, 105. Guide rail, 106. Connecting plate, 107. Handwheel, 108. Force gauge bracket, 109. Shaft hole, 110. Detection port; 2. Lever assembly, 201. Lever, 202. Sensor tray, 203. Lever shaft, 204. Roller pin, 205. Needle roller shaft, 206. Force measuring head, 207. Opening; 3. Sensor, 4. Force gauge, 5. Release block. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1 As shown, a launcher release force detection device includes a loading mechanism 1, a lever mechanism 2, and a sensor 3.

[0021] like Figure 3 As shown, the loading mechanism includes a connecting plate 106, two sets of guide rail brackets 102, a turbine housing 101, a lead screw 103, and a handwheel 107. The connecting plate 106 is horizontally positioned for connecting an external launcher. A vertically extending detection port 110 is provided on the surface of the connecting plate 106 to provide a detection window for the lever mechanism 2. The guide rail bracket 102 is a plate-shaped component. Two sets of guide rail brackets 102 are vertically fixed to both sides of the connecting plate 106. Horizontal guide rails 105 are provided on the surface of the guide rail bracket 102. The two guide rails 105 are located in the same horizontal plane and are vertically parallel to the connecting plate 106. The turbine housing is fixed to the right end of the connecting plate 106. The lead screw 103 is horizontally positioned on the horizontal plane between the connecting plate 106 and the guide rails 105. The lead screw 103 is connected to a worm gear inside the turbine housing 101. The lead screw 103 has a connecting shaft 104 at its front end, and the connecting shaft 104 has a horizontal shaft hole 109, the axis of which is perpendicular to the axis of the lead screw 103. A handwheel 107 is connected to a worm gear box 101. Rotating the handwheel 107 causes the worm gear inside the worm gear box to move the lead screw 103 horizontally on the connecting plate 106. The worm gear box 101 has a force gauge 4 bracket 108 for holding the force gauge 4, such as... Figure 2 As shown.

[0022] Lever mechanism 2 is a crucial mechanism in this invention that enables the conversion of horizontal force into vertical force. Its specific structure is as follows:

[0023] like Figure 4As shown, lever mechanism 2 is located at the left end of connecting plate 106. Lever mechanism 2 includes lever 201, sensor tray 202, lever shaft 203, and force measuring head 206. Lever 201 includes a vertical section and a horizontal section, and lever 201 is inverted L-shaped. Lever shaft 203 and sensor tray 202 are located in the vertical section of lever 201. Force measuring head 206 is located in the horizontal section of lever 201.

[0024] A longitudinal opening 207 is provided on the vertical section of lever 201. The connecting shaft 104 at the front end of lead screw 103 is inserted into the opening 207. Lever shaft 203 passes horizontally through the shaft hole 109 of connecting shaft 104 located in the opening 207 and is connected to lever 201. Lever 201 can rotate around lever shaft 203. Sensor tray 202 is set on the rod above lever shaft 203. Needle rollers 205 are provided on both sides of sensor tray 202. The needle rollers 205 on both sides of sensor tray 202 are respectively inserted into the guide rails 105 of two sets of guide rail brackets 102 to form a sliding fit. The surface of sensor tray 202 is horizontal. Sensor 3 is fixed to sensor tray 202 by screws. A roller pin 204 is provided at the lower end of the vertical section of lever 201. The roller pin 204 is used to abut against the release block 5 on the right side of lever 201 to form a pair of reaction forces. It should be noted that the rolling pin 204 at the lower end of the lever 201 extends downward from the detection port 110 of the connecting plate 106, and is used to apply force to the release block 5 of the external launcher located on the right side of the rolling pin 204, such as... Figure 2 As shown.

[0025] The horizontal section of lever 201 is perpendicular to the right side of the upper end of the vertical section of lever 201, and a vertically downward force-measuring head 206 is provided at the right end of the horizontal section. The force-measuring head 206 is used to vertically insert into the connection hole of sensor 3.

[0026] It should be noted that lever 201 comprises three lever arms. The horizontal distance between the force measuring head 206 and the lever shaft 203 forms the first lever arm L1; the vertical segment of lever 201 is divided by the lever shaft 203. The vertical distance between the lever shaft 203 and the lower end rolling pin 204 forms the second lever arm L2. The vertical distance between the lever shaft 203 and the horizontal segment forms the third lever arm L3. The first lever arm L1 and the second lever arm L2 are of equal length.

[0027] like Figure 5As shown, the detection principle of this invention is as follows: The loading mechanism 1 abuts against the release block 5 located on its right side via the rolling pin 204 at the lower end of the lever 201. Rotating the handwheel 107 causes the lead screw 103 to move horizontally to the right. Since the connecting shaft 104 at the front end of the lead screw 103 is connected to the lever 201 via the lever shaft 203, the lever shaft 203 pulls the entire lever mechanism 2 to move horizontally to the right under the action of the lead screw 103. Because the rolling pin 204 abuts against the release block 5, as the loading mechanism 1 continuously applies force, the pushing force on the release block 5 by the rolling pin 204 gradually increases. The required force value at the moment the release block 5 is pushed open is the force value to be detected. Furthermore, since the lever 201 is a rotating pair that can rotate around the lever shaft 203, a rotational force couple is formed. The force measuring head 206, which is connected to the sensor 3 at the upper end of the lever 201, applies a force to the sensor 3 to detect the force value.

[0028] like Figure 6 As shown, the mechanical analysis of this invention is as follows: Rotating the handwheel 107 causes the lead screw 103 to move horizontally to the right, generating an axial pulling force F1. At this time, the release block 5 is subjected to a force F2′. This F2′ is the magnitude of the force to be detected. Taking the lever 201 as the research object, the lever 201 is subjected to a force F2 relative to the release block 5. The lever 201 rotates around the lever axis 203, and the upper end of the lever 201 generates a force F3′ on the sensor 3 through the force measuring head 206. It can be seen that the lever 201 is mainly subjected to forces F2 and F3, and F3 can be decomposed into a vertical component F. 31 and horizontal component F 32 Furthermore, lever 201 generates a couple around lever axis 203. According to the equilibrium of the couple, F2 × L2 = F 31 ×L1+F 32 ×L3. Because the sensor tray 202 has needle rollers 205 on both sides, the needle rollers 205 roll in the guide rail 105, making the sensor 3 unrestrained in the horizontal direction, therefore F 32 It can be ignored. Therefore, we can obtain F2×L2=F 31 ×L1. Since L1=L2, we can obtain F2=F 31 F 31 The force exerted by sensor 3 on force measuring head 206 in the vertical direction is the reaction force. Therefore, the force value experienced by sensor 3 is the force F2′ to be detected. The magnitude of the force value experienced by sensor 3 can be read by an external force gauge 4. The force gauge 4 can be mounted on the force gauge 4 bracket 108 for easy reading.

[0029] As described above, the present invention, through the lever mechanism 2, transforms the horizontal tension to be detected into a vertical pressure, effectively reducing the overall horizontal dimension of the detection mechanism. This provides a more convenient device for detecting the release force value of the launcher release block 5.

Claims

1. A launcher release force value detection device, comprising a loading mechanism and a sensor, characterized in that: It further includes a lever mechanism; the loading mechanism includes a connecting plate, two pairs of guide rail brackets, a worm gear box and a lead screw; the connecting plate is horizontally arranged at the bottom, and a detection port penetrating up and down is provided on the plate surface of the connecting plate; the two pairs of guide rail brackets are vertically fixed on both sides of the connecting plate; horizontal guide rails are provided on the guide rail brackets; the two guide rails are located in the same horizontal plane; the worm gear box is fixed at the right end of the connecting plate, the lead screw is connected with the worm gear in the worm gear box, and the lead screw is horizontally arranged in the horizontal plane between the connecting plate and the guide rails; a connecting shaft is provided at the front end of the lead screw, the connecting shaft is provided with a horizontal shaft hole, and the axis of the shaft hole is perpendicular to the axis of the lead screw. The lever mechanism includes a lever, a sensor tray, a lever shaft and a force measuring head; the lever mechanism is arranged at the left end of the connecting plate; a rolling pin is provided at the lower end of the lever, and the rolling pin extends downward from the detection port of the connecting plate; a horizontal rod body is provided on the right side of the upper end of the lever, and a vertically downward force measuring head is provided at the right end of the horizontal rod body; a longitudinal opening is provided on the vertical rod body of the lever, and the connecting shaft at the front end of the lead screw is inserted into the opening; the lever shaft horizontally penetrates through the shaft hole of the connecting shaft located in the opening and is connected with the lever; the lever can rotate around the lever shaft; the sensor tray is horizontally arranged on the rod body of the lever above the lever shaft; rolling pin shafts are respectively provided on both sides of the sensor tray; the rolling pin shafts are respectively inserted into the guide rails of the guide rail brackets to form a sliding fit; the sensor is fixed on the sensor tray by screws; the force measuring head is vertically inserted into the sensor; the horizontal distance between the force measuring head and the lever shaft is the first force arm L1; the vertical distance between the lever shaft and the rolling pin is the second force arm L2; the vertical distance from the lever shaft to the upper end of the lever is the third force arm L3; the lengths of the first force arm L1 and the second force arm L2 are equal.

2. The release force value detection device for a launcher according to claim 1, wherein: The worm gear box is connected with a hand wheel.

3. The release force value detection device for a launcher according to claim 1, wherein: The sensor is externally connected with a dynamometer.

4. The release force value detection device for a launcher according to claim 1, characterized in that: A dynamometer bracket is provided on the worm gear box for placing the dynamometer.

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